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Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Aerodynamically Optimal Regional Aircraft Concepts: Conventional and Blended Wing-Body Designs  

E-Print Network [OSTI]

Aerodynamically Optimal Regional Aircraft Concepts: Conventional and Blended Wing-Body Designs aircraft such as those that serve regional routes. We thus explore the optimal aerodynamic shape of both a blended wing-body and conventional tube-and-wing regional aircraft through high-fidelity aerodynamic shape

Zingg, David W.

2

Aircraft  

DOE Patents [OSTI]

This disclosure provides a solar rechargeable aircraft that is inexpensive to produce, is steerable, and can remain airborne almost indefinitely. The preferred aircraft is a span-loaded flying wing, having no fuselage or rudder. Travelling at relatively slow speeds, and having a two-hundred foot wingspan that mounts photovoltaic cells on most all of the wing`s top surface, the aircraft uses only differential thrust of its eight propellers to turn. Each of five sections of the wing has one or more engines and photovoltaic arrays, and produces its own lift independent of the other sections, to avoid loading them. Five two-sided photovoltaic arrays, in all, are mounted on the wing, and receive photovoltaic energy both incident on top of the wing, and which is incident also from below, through a bottom, transparent surface. The aircraft is capable of a top speed of about ninety miles per hour, which enables the aircraft to attain and can continuously maintain altitudes of up to sixty-five thousand feet. Regenerative fuel cells in the wing store excess electricity for use at night, such that the aircraft can sustain its elevation indefinitely. A main spar of the wing doubles as a pressure vessel that houses hydrogen and oxygen gases for use in the regenerative fuel cell. The aircraft has a wide variety of applications, which include weather monitoring and atmospheric testing, communications, surveillance, and other applications as well. 31 figs.

Hibbs, B.D.; Lissaman, P.B.S.; Morgan, W.R.; Radkey, R.L.

1998-09-22T23:59:59.000Z

3

Aircraft  

DOE Patents [OSTI]

This disclosure provides a solar rechargeable aircraft that is inexpensive to produce, is steerable, and can remain airborne almost indefinitely. The preferred aircraft is a span-loaded flying wing, having no fuselage or rudder. Travelling at relatively slow speeds, and having a two-hundred foot wingspan that mounts photovoltaic cells on most all of the wing's top surface, the aircraft uses only differential thrust of its eight propellers to turn. Each of five sections of the wing has one or more engines and photovoltaic arrays, and produces its own lift independent of the other sections, to avoid loading them. Five two-sided photovoltaic arrays, in all, are mounted on the wing, and receive photovoltaic energy both incident on top of the wing, and which is incident also from below, through a bottom, transparent surface. The aircraft is capable of a top speed of about ninety miles per hour, which enables the aircraft to attain and can continuously maintain altitudes of up to sixty-five thousand feet. Regenerative fuel cells in the wing store excess electricity for use at night, such that the aircraft can sustain its elevation indefinitely. A main spar of the wing doubles as a pressure vessel that houses hydrogen and oxygen gasses for use in the regenerative fuel cell. The aircraft has a wide variety of applications, which include weather monitoring and atmospheric testing, communications, surveillance, and other applications as well.

Hibbs, Bart D. (1732 N. Grand Oaks, Altadena, CA 91001); Lissaman, Peter B. S. (3276 Rubio Canyon Rd., Altadena, CA 91001); Morgan, Walter R. (3217 Amarillo Ave., Simi Valley, CA 93063); Radkey, Robert L. (70 Eddystone Ct., Redwood City, CA 94065)

1998-01-01T23:59:59.000Z

4

Impact of Liquefied Natural Gas usage and payload size on Hybrid Wing Body aircraft fuel efficiency  

E-Print Network [OSTI]

This work assessed Hybrid Wing Body (HWB) aircraft in the context of Liquefied Natural Gas (LNG) fuel usage and payload/range scalability at three scales: H1 (B737), H2 (B787) and H3 (B777). The aircraft were optimized for ...

Mody, Pritesh (Pritesh Chetan)

2010-01-01T23:59:59.000Z

5

Analog and digital dynamic simulations of a rigid body aircraft in straight and level flight  

E-Print Network [OSTI]

. , Texas A&M University Directed by: Dr. Balusu M. Rao A study of the dynamic response characteristics of an aircraft at low approach speeds was conducted using both a digital and an analog computer to simulate a DeHavilland "Beaver" DHC-2 in flight... to produce more sideslip and yawing motions than the rudder with analytical solutions. The problem areas of the STOL aircraft at low approach speeds as a result of a study of the DeHavilland "Beaver" were in lateral stability. The aircraft's response...

Stroman, Morris Michael

2012-06-07T23:59:59.000Z

6

Solar thermal aircraft  

DOE Patents [OSTI]

A solar thermal powered aircraft powered by heat energy from the sun. A heat engine, such as a Stirling engine, is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller. The heat engine has a thermal battery in thermal contact with it so that heat is supplied from the thermal battery. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

Bennett, Charles L. (Livermore, CA)

2007-09-18T23:59:59.000Z

7

Aircraft: Keeping Aircraft Quieter  

Science Journals Connector (OSTI)

... of Trade, is due to come into effect. Present day aircraft such as the Boeing 707 and the British VC-10 will be exempt from this restriction, the aim ... land in Britain unless they possess a valid noise certificate. The first model of the Boeing 747 jumbo jet will not be affected by the new regulations, as planning started ...

1970-04-04T23:59:59.000Z

8

Conceptual aircraft dynamics from inverse aircraft modeling  

E-Print Network [OSTI]

This thesis presents a method of construe' ting a nonlinear dynamics model of a theoretical aircraft from the nonlinear batch simulation of an existing aircrew This method provides control law designers with a method of fabricating nonlinear models...

Ziegler, Gregory E

1999-01-01T23:59:59.000Z

9

P-3 B Aircraft  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

features of this aircraft include numerous zenith, nadir and oblique ports to mount experiments. Most of the ports are contained within the pressurized cabin...

10

Automated fixture and robot-aided deburring for light aircraft components.  

E-Print Network [OSTI]

??Bristol Aerospace Limited (BAL), Winnipeg, manufactures a wide range of parts for the Boeing-777 aircraft. Most of these parts have cubic edges and cubic surfaces… (more)

Pandian, Jayasundaram

1998-01-01T23:59:59.000Z

11

ARM - Other Aircraft Campaigns  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

FacilityOther Aircraft Campaigns FacilityOther Aircraft Campaigns AAF Information Proposal Process Science (PDF) Baseline Instruments Campaign Instruments Instrumentation Workshop 2008 AAF Fact Sheet G-1 Fact Sheet Images Field Campaigns AAF Campaigns 2007 - UAV Campaigns 1993 - 2006, 2015 Other Aircraft Campaigns 1993 - 2010 AAF Contacts Rickey Petty DOE AAF Program Director Beat Schmid Technical Director Other Aircraft Campaigns In addition to AAF and UAV field campaigns, the ARM Climate Research Facility has hosted the following campaigns that included aircraft. Start Date Status Campaign Name Duration Lead Scientist Site 2010-05-01 Approved Deep Convective Clouds and Chemistry 2 months Christopher Cantrell SGP 2006-01-01 Past RAdiative Divergence using AMF, GERB and AMMA STations (RADAGAST) 1.0 years Anthony Slingo AMF

12

Rankline-Brayton engine powered solar thermal aircraft  

DOE Patents [OSTI]

A solar thermal powered aircraft powered by heat energy from the sun. A Rankine-Brayton hybrid cycle heat engine is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller or other mechanism for enabling sustained free flight. The Rankine-Brayton engine has a thermal battery, preferably containing a lithium-hydride and lithium mixture, operably connected to it so that heat is supplied from the thermal battery to a working fluid. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

Bennett, Charles L. (Livermore, CA)

2012-03-13T23:59:59.000Z

13

Rankine-Brayton engine powered solar thermal aircraft  

DOE Patents [OSTI]

A solar thermal powered aircraft powered by heat energy from the sun. A Rankine-Brayton hybrid cycle heat engine is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller or other mechanism for enabling sustained free flight. The Rankine-Brayton engine has a thermal battery, preferably containing a lithium-hydride and lithium mixture, operably connected to it so that heat is supplied from the thermal battery to a working fluid. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

Bennett, Charles L. (Livermore, CA)

2009-12-29T23:59:59.000Z

14

Deformable human body model development  

SciTech Connect (OSTI)

This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). A Deformable Human Body Model (DHBM) capable of simulating a wide variety of deformation interactions between man and his environment has been developed. The model was intended to have applications in automobile safety analysis, soldier survivability studies and assistive technology development for the disabled. To date, we have demonstrated the utility of the DHBM in automobile safety analysis and are currently engaged in discussions with the U.S. military involving two additional applications. More specifically, the DHBM has been incorporated into a Virtual Safety Lab (VSL) for automobile design under contract to General Motors Corporation. Furthermore, we have won $1.8M in funding from the U.S. Army Medical Research and Material Command for development of a noninvasive intracranial pressure measurement system. The proposed research makes use of the detailed head model that is a component of the DHBM; the project duration is three years. In addition, we have been contacted by the Air Force Armstrong Aerospace Medical Research Laboratory concerning possible use of the DHBM in analyzing the loads and injury potential to pilots upon ejection from military aircraft. Current discussions with Armstrong involve possible LANL participation in a comparison between DHBM and the Air Force Articulated Total Body (ATB) model that is the current military standard.

Wray, W.O.; Aida, T.

1998-11-01T23:59:59.000Z

15

ME 4171 Environmentally Conscious Design & Manufacturing (Bras) Assignment Aircraft Fuel Tank Production Pollution Prevention  

E-Print Network [OSTI]

ME 4171 ­ Environmentally Conscious Design & Manufacturing (Bras) Assignment ­ Aircraft Fuel Tank Production Pollution Prevention A local company manufactures a wide variety of fabric fuel tanks for use mainly in the aircraft industry. The main reasons for using fabric in the construction of these tanks

16

The military aircraft gas turbine  

Science Journals Connector (OSTI)

The development of the gas turbine for use in military aircraft is discussed. The advancing fields of component technology and engine testing are also outlined

R.M. Denning; R.J. Lane

1983-01-01T23:59:59.000Z

17

A study of the dynamics of an aircraft subjected to the airloads created by a pair of trailing vortices of a large aircraft  

E-Print Network [OSTI]

a trailing vortex system of a larger aircraft. This analysis, based on a lifting surface theory developed by Jones and Rao, neglects wing-body-tail interaction effects. The changes in the aerodynamic loads and moments on the De Havilland Beaver..., to the trailing vortex system. The response of the Beaver aircraft in longitudinal flight is predicted as it penetrates a trailing vortex system of known strength. The trailing vortex strength is chosen in such a way that the linear- ization assumption...

Ramirez, Amado

2012-06-07T23:59:59.000Z

18

Aircraft Cabin Environmental Quality Sensors  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Aircraft Cabin Environmental Quality Sensors Aircraft Cabin Environmental Quality Sensors Title Aircraft Cabin Environmental Quality Sensors Publication Type Report Year of Publication 2004 Authors Gundel, Lara A., Thomas W. Kirchstetter, Michael Spears, and Douglas P. Sullivan Keywords carbon monoxide, ozone Abstract Identification of aircraft cabin environmental quality concerns for which sensors may be useful The highest priority environmental indicators identified are ozone and cabin air pressure, followed by carbon monoxide and carbon dioxide with moderate priority, and then relative humidity, airborne particles, and organic contaminants, including engine oil byproducts and pesticides. This list is based on the Congressional requirements and recent scientific literature, starting with information from recent studies (NAS/NRC, ASHRAE/Battelle), and continuing by seeking input from a variety of stakeholders.

19

ARM - Field Campaign - Aircraft Carbon  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

govCampaignsAircraft Carbon govCampaignsAircraft Carbon Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Aircraft Carbon 2006.07.01 - 2008.09.30 Lead Scientist : Margaret Torn For data sets, see below. Description Airborne trace-gas measurements at ARM-SGP provided valuable data for addressing carbon-cycle questions highlighted by the US Climate Change Research Program and the North American Carbon Program. A set of carbon-cycle instruments and sample collection systems were added to an ARM-managed aircraft at ARM-SGP user facility. A separate (in-place) grant covered the cost of developing the instrument systems, analyzing the data, and ingesting all data to the ARM data archives. In the short-term (~1 y) we had two priorities. The first was to acquire

20

Hybrid powertrain for light aircraft  

Science Journals Connector (OSTI)

In this paper, we evaluate the possibility of employing a hybrid powertrain to propel a light aircraft. The work suggests that the incorporation of a hybrid powertrain has little effect on fuel consumption for a light aircraft operating in a condition of straight and level cruise. However, there is a potential decrease in fuel consumption when a light aircraft operates either in climb or when manoeuvring over a conventionally powered aircraft. This is due to three main factors, namely, the energy harvested during descent by a windmilling propeller, the engine being switched off during descent and the fact that the air/fuel mixture does not have to be enriched during climbing phases. Estimating the potential fuel savings is obviously mission dependent, however, an unshrouded propeller could harvest enough energy to provide 39% of the excess power required for climbing. This figure could be significantly increased by use of a shrouded propeller.

John Olsen; John R. Page

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Advanced numerical methods for analysis and design in aircraft aerodynamics  

Science Journals Connector (OSTI)

A review is presented of developments in recent years in computational methods for aerodynamic design and analysis. The discussion is mainly influenced by the industrial requirements and developments at Dornier. The need and use of computational aerodynamics in the design of aircraft and missile configurations is explored through several examples. These include synthesis-programs and predesign and evaluation work of aircraft and missile weapon systems, airfoil and high lift analysis and deign methodologies, three-dimensional transport- and fighter aircraft wing-body analysis methods for the complete speed range from subsonic to supersonic speed even including leading edge vortex flows, engine-inlet flows and interference problems. Besides the importance of advanced numerical schemes and fast large computers the cost-limiting factor of complex geometry handling and data pre- and post-processing is discussed. The use of these numerical methods has proved to substantially increase aircraft performance capabilities while reducing risk, flow time, and testing requirements and thus total costs. At the same time such methods are in use to analyse and improve current and future wind tunnel limitations like wall effects, flow angularity, and Reynolds number.

W. Schmidt

1986-01-01T23:59:59.000Z

22

Maintenance cost studies of present aircraft subsystems  

E-Print Network [OSTI]

This report describes two detailed studies of actual maintenance costs for present transport aircraft. The first part describes maintenance costs for jet transport aircraft broken down into subsystem costs according to an ...

Pearlman, Chaim Herman Shalom

1966-01-01T23:59:59.000Z

23

Aircraft System Identification Using Artificial Neural Networks  

E-Print Network [OSTI]

Aircraft System Identification Using Artificial Neural Networks Kenton Kirkpatrick , Jim May Jr Artificial Neural Network System Identification, has the advantages of being straightforward with low for aircraft using an artificial neural network (ANN). Artificial neural networks are useful for creating

Valasek, John

24

Development Cycle Time Simulation For Civil Aircraft  

Science Journals Connector (OSTI)

Cycle Time Reduction (CTR) will be one of the major factors affecting the future of the civil aerospace industry. This focus is the end reflection of the level of competition in the commercial large carrier aircraft industry. Aircraft manufacturer must ...

Spitz William; Golaszewski Richard; Berardino Frank; Johnson Jesse

2001-01-01T23:59:59.000Z

25

Global Mortality Attributable to Aircraft Cruise Emissions  

E-Print Network [OSTI]

Aircraft emissions impact human health though degradation of air quality. The majority of previous analyses of air quality impacts from aviation have considered only landing and takeoff emissions. We show that aircraft ...

Britter, Rex E.

26

Method and apparatus for monitoring aircraft components  

DOE Patents [OSTI]

Operability of aircraft mechanical components is monitored by analyzing the voltage output of an electrical generator of the aircraft. Alternative generators, for a turbine-driven rotor aircraft, include the gas producer turbine tachometer generator, the power turbine tachometer generator, and the aircraft systems power producing starter/generator. Changes in the peak amplitudes of the fundamental frequency and its harmonics are correlated to changes in condition of the mechanical components.

Dickens, Larry M. (Oak Ridge, TN); Haynes, Howard D. (Knoxville, TN); Ayers, Curtis W. (Clinton, TN)

1996-01-01T23:59:59.000Z

27

Method and apparatus for monitoring aircraft components  

DOE Patents [OSTI]

Operability of aircraft mechanical components is monitored by analyzing the voltage output of an electrical generator of the aircraft. Alternative generators, for a turbine-driven rotor aircraft, include the gas producer turbine tachometer generator, the power turbine tachometer generator, and the aircraft systems power producing starter/generator. Changes in the peak amplitudes of the fundamental frequency and its harmonics are correlated to changes in condition of the mechanical components. 14 figs.

Dickens, L.M.; Haynes, H.D.; Ayers, C.W.

1996-01-16T23:59:59.000Z

28

Directivity and spectral characteristics of aircraft noise during landing operations  

Science Journals Connector (OSTI)

Recordings of aircraft landing operations have been analyzed to obtain directivity and spectralcharacteristics of the noise emitted during these operations. The recordings were made with a widely spaced microphone array positioned near and parallel to the 19R runway at Washington?Dulles International Airport. In addition the landings were recorded with a video camera to obtain positional data of the aircraft. Given an aircraft’s position and velocity along the runway the signal at each microphone is corrected for retarded time spherical spreading and Doppler shift. The corrected signals are combined to establish a directivity pattern and third?octave analysis is performed to obtain spectralcharacteristics. The results of this analysis are intended to be used as input to airport noise modeling software such as the Integrated Noise Model (INM) which currently models landing noise using forward?thrust input data. The current analysis should provide more realistic directivity and spectra for the reverse?thrust condition. [Work supported by the Federal Aviation Administration and the Applied Research Laboratory Exploratory and Foundational Research Program.

2007-01-01T23:59:59.000Z

29

A Reference Software Architecture to Support Unmanned Aircraft Integration in the National Airspace System  

Science Journals Connector (OSTI)

This paper outlines an architecture that provides data and software services to enable a set of Unmanned Aircraft (UA) platforms to operate in a wide range of air domains which may include terminal, en route, oceanic and tactical. The architecture allows ... Keywords: Reference architecture, Sense and Avoid, Service Oriented Architecture, Testbed, Unmanned Air vehicle

Curtis W. Heisey; Adam G. Hendrickson; Barbara J. Chludzinski; Rodney E. Cole; Mark Ford; Larry Herbek; Magnus Ljungberg; Zakir Magdum; D. Marquis; Alexander Mezhirov; John L. Pennell; Ted A. Roe; Andrew J. Weinert

2013-01-01T23:59:59.000Z

30

A robust guidance system for aircraft approach and landing  

E-Print Network [OSTI]

Aircraft approach and landing are very demanding and risky operational phases compared to other routine flight phases. Statistics show that large percentages of aircraft accidents, especially general aviation (GA) aircraft, occur during these phases...

Yu, Ren-Jye

1999-01-01T23:59:59.000Z

31

Managing IT investment for aircraft sustainment  

E-Print Network [OSTI]

for managing investment in aircraft spares. Case study 1: the process reference model, referredManaging IT investment for aircraft sustainment Michael MacDonnell, Department of Management in terms of both annual revenue and the scale and complexity of its value chain. Operations practices (and

de Weck, Olivier L.

32

The multi-stop aircraft routing problem  

E-Print Network [OSTI]

We study the multi-stop aircraft routing problem, determining the sequence of stops and the number of passengers to carry in each segment route. The objective of the aircraft routing problem is to maximize the profit derived from the transportation...

Garci?a Castan?eda, Salvador

1995-01-01T23:59:59.000Z

33

Probing Emissions of Military Cargo Aircraft: Description of...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Emissions of Military Cargo Aircraft: Description of a Joint Field Measurement Strategic Environmental Research and Probing Emissions of Military Cargo Aircraft: Description of a...

34

Electrical Generation for More-Electric Aircraft using Solid...  

Broader source: Energy.gov (indexed) [DOE]

Electrical Generation for More-Electric Aircraft using Solid Oxide Fuel Cells Electrical Generation for More-Electric Aircraft using Solid Oxide Fuel Cells This study, completed by...

35

World Wide Chemistry  

Science Journals Connector (OSTI)

World Wide Chemistry ... Plutonium has been produced for the first time at Britain's Atomic Energy Research Establishment at Harwell. ... Indian Ore Reserves ...

G. ABRAHAMSON; RAFFAELE SANSONE

1949-04-11T23:59:59.000Z

36

INFOGRAPHIC: Wide Bandgap Semiconductors  

Office of Energy Efficiency and Renewable Energy (EERE)

Breakthrough material technology called wide bandgap (WBG) semiconductors can help reduce the amount of wasted heat, boost energy efficiency, improve reliability, reduce cost, and decrease system size in existing and future power electronics.

37

the World Wide Web  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

technical report has been made electronically available on the World Wide Web through a contribution from Walter L. Warnick In honor of Enrico Fermi Leader of the first nuclear...

38

Fuel Cell Council Working Group on Aircraft and Aircraft Ground Support Fuel Cell Applications  

Broader source: Energy.gov [DOE]

Presentation by Robert Wichert, US Fuel Cell Council, at the DOD-DOE Aircraft Petroleum Use Reduction Workshop, September 30, 2010, in Washington, DC.

39

ROUTEMAP model for predicting aircraft noise exposure along military training routes  

Science Journals Connector (OSTI)

A model and PC?based computer program has been prepared to calculate noise levels along low?altitude high?speed military training routes. The program is designed for use by environmental planning personnel who are familiar with MTR operations and with noise but are not necessarily expert. The program provides options for selecting general types of operations (visual or instrument navigation) aircraft types and speeds altitudes and nominal track centerlines. Up to 20 track/altitude/aircraft types may be defined within a 20?mi?wide corridor. Aircraft on each track have a Gaussian lateral distribution about the centerline. The program contains nominal standard deviations based on the type of operations or the user may specify a site?specific value. Aircraft noise emission levels are derived from the USAF NOISEFILE database. The program calculates L eq L dn and L dnmr where L dnmr is L dn with an adjustment to account for the onset rate of MTR aircraft noise. Program output is available in tabular form or in graphs suitable for inclusion in reports. [This work was sponsored by USAF AAMRL/BBE.

Michael J. Lucas; Kenneth J. Plotkin

1989-01-01T23:59:59.000Z

40

PNNL: Research Aircraft Facility (RAF) - FCSD  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Research Aircraft Facility (RAF) Research Aircraft Facility (RAF) It is in the mixed layer and free troposphere that most chemical reactions, gas-to-particle transformations, cloud processes, and transport of materials occur. The Pacific Northwest National Laboratory operates the U.S. Department of Energy (DOE) Research Aircraft Facility (RAF) performing airborne research in these areas to serve atmospheric scientists at DOE and other federal, state, and industrial entities. The RAF is dedicated to fulfilling important DOE and national goals in understanding atmospheric processes as they relate to the DOE's environmental missions and the global environment. Central to this facility are the PNNL Grumman Gulfstream 159 (G-1) aircraft, its flight crew, science and engineering technical staff,

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Titanium in fatigue critical military aircraft structure  

SciTech Connect (OSTI)

This paper discusses the effect of fatigue requirements on titanium structure in military aircraft applications, specifically, fighter aircraft. The discussion covers how fatigue affects the design and analysis of detail parts, and how manufacturing processes affect the fatigue performance of titanium structure. Criteria for designing fighter aircraft have evolved from simple strength calculations to extremely complex computer generated analyses involving strength, durability, damage tolerance and fatigue. Fatigue life prediction is an important part of these analyses and dramatically affects the design and weight of fighter aircraft. Manufacturing processes affect fatigue performance both in a positive and negative manner. Designers must allow for the effect of these processes on titanium structure and consider the efficiency and economy of adding processes that increase fatigue life.

Gillespie, F.

1999-07-01T23:59:59.000Z

42

Sandia National Laboratories: Unmanned Aircraft Test Flights...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of around 500 to 1500 feet above ground level. The aircraft can send and receive data up to 10 miles away to deliver high-quality video imagery using color and infrared...

43

A World-wide Stratospheric Aerosol Layer  

Science Journals Connector (OSTI)

...Massachusetts An aerosol layer has been identified by a stratospheric balloon and aircraft aerosol collection program. Measurements...Abstract. An aerosol layer has been identified by a stratospheric balloon and aircraft aerosol collection program. Meas-urements...

Christian E. Junge; Charles W. Chagnon; James E. Manson

1961-05-12T23:59:59.000Z

44

Body fat  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Body fat Body fat Name: Vincent Peri Status: N/A Age: N/A Location: N/A Country: N/A Date: N/A Question: What is fat? How does it accumulate in your body? Replies: Fat that is seen is a result of the multiplication and swelling of fat cells under the skin. The cells accumulate fat when times are good. In other words, when your caloric intake is greater than your caloric output, there is a tendency to accumulate fat. Fat is produced by using glucose ( a type of sugar) as the precursor molecule to create the building blocks for the creation of fat, a polymer known class known as lipid. Fat that is ingested must first be broken down before it is converted into fat in the body. Thus, it takes more energy to synthesize fat from fat than it does from simple carbohydrates. People who calorie count need to watch the amount of fat in foods because fat contains more calories per dry weight than protein or carbohydrates. Since fat does not include water and plants and vegetables are mostly water, a small amount of fat will have the same amount of calories as heaping portions of some vegetables. I hope I was clear. Oh yeah, there are many different kinds of lipids (including cholesterol) that are not the same as the the lipids that comprise the majority of fat deposits. This is only the tip of the ice berg and my description is purposely incomplete. Hope it helps.

45

On the safety of aircraft systems: A case study  

SciTech Connect (OSTI)

An airplane is a highly engineered system incorporating control- and feedback-loops which often, and realistically, are non-linear because the equations describing such feedback contain products of state variables, trigonometric or square-root functions, or other types of non-linear terms. The feedback provided by the pilot (crew) of the airplane also is typically non-linear because it has the same mathematical characteristics. An airplane is designed with systems to prevent and mitigate undesired events. If an undesired triggering event occurs, an accident may process in different ways depending on the effectiveness of such systems. In addition, the progression of some accidents requires that the operating crew take corrective action(s), which may modify the configuration of some systems. The safety assessment of an aircraft system typically is carried out using ARP (Aerospace Recommended Practice) 4761 (SAE, 1995) methods, such as Fault Tree Analysis (FTA) and Failure Mode and Effects Analysis (FMEA). Such methods may be called static because they model an aircraft system on its nominal configuration during a mission time, but they do not incorporate the action(s) taken by the operating crew, nor the dynamic behavior (non-linearities) of the system (airplane) as a function of time. Probabilistic Safety Assessment (PSA), also known as Probabilistic Risk Assessment (PRA), has been applied to highly engineered systems, such as aircraft and nuclear power plants. PSA encompasses a wide variety of methods, including event tree analysis (ETA), FTA, and common-cause analysis, among others. PSA should not be confused with ARP 4761`s proposed PSSA (Preliminary System Safety Assessment); as its name implies, PSSA is a preliminary assessment at the system level consisting of FTA and FMEA.

Martinez-Guridi, G.; Hall, R.E.; Fullwood, R.R.

1997-05-14T23:59:59.000Z

46

E-Print Network 3.0 - aircraft plume model Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Research in Military Aircraft Emissions Photo of a B-52 bomber taking off (above) and landing... ) Focus on high-payload aircraft Aircraft emissions play a significant...

47

A time history algorithm for aircraft noise  

Science Journals Connector (OSTI)

In the course of the development of a comprehensive computer airport noisemodel offering a choice of noise metrics (see previous paper) the ASDS metric (“Aircraft Sound Description System”) required the computation of the time noise levels from aircraft flyover exceed specified thresholds. A package of subroutines was developed that performs a noise level time history simulation by tracking aircraft position and orientation along a three?dimensional flight path using variable time steps depending on the rate of noise level change. The A?weighted noise levels at observer positions are calculated for each time step from two three?dimensional models: a three?component jet engine noise emission model (front fan rear fan jet) where each component varies with engine thrust at a different rate; and a propagation model describing the excess attenuation of A?weighted levels as a function of distance. Both models use aircraft specific empirical parameters determined from measured spectral data and calibrated by comparing calculated and measured maximum A?weighted flyover levels for a range of practical distances. The subroutine package is capable of calculating threshold exceedance times cumulative distributions of noise levels and the time?integrated energy equivalent noise level from an aircraft flyover. [Work supported by the U. S. Department of Transportation.

R. Rackl

1977-01-01T23:59:59.000Z

48

Joint Estimation of NDE Inspection Capability and Flaw-size Distribution for in-service Aircraft Inspections  

E-Print Network [OSTI]

1 Joint Estimation of NDE Inspection Capability and Flaw- size Distribution for in-service Aircraft, Dayton, OH 45469 Abstract: Nondestructive evaluation (NDE) is widely used in the aerospace industry of unknown existing cracks is more difficult. If NDE signal strength is recorded at all inspections

49

Aeroacoustics of perforated drag plates for quiet transport aircraft  

E-Print Network [OSTI]

Historically aircraft noise is one of the principal environmental issues for aviation. Within this context, the Silent Aircraft Initiative was launched with the objective to achieve a step-change in noise reduction compared ...

Sakaliyski, Kiril Dimitrov

2005-01-01T23:59:59.000Z

50

Nature's engineering : a blueprint for efficient aircraft design  

E-Print Network [OSTI]

The flight of birds inspired engineers like Leonard da Vinci and Wilbur and Orville Wright to design aircraft that mimic the behavior they observed. The success of the Wright brothers' first controllable aircraft ushered ...

Pineda, Elvine Philip B., II

2011-01-01T23:59:59.000Z

51

Maintenance cost studies of rotary wing commercial transport aircraft  

E-Print Network [OSTI]

Introduction: The vertical take-off and landing (VTOL) aircraft market has had substantial growth in the period of the last ten years when one considers the overall number of aircraft in use. The military fleet has continued ...

Ausrotas, Raymond A.

1974-01-01T23:59:59.000Z

52

DOD-DOE Aircraft Petroleum Use Reduction Workshop Agenda  

Broader source: Energy.gov [DOE]

Workshop agenda for the DOD-DOE Aircraft Petroleum Use Reduction Workshop, September 30, 2010, in Washington, DC.

53

Detection of aeroacoustic sound sources on aircraft and wind turbines  

E-Print Network [OSTI]

Detection of aeroacoustic sound sources on aircraft and wind turbines Stefan Oerlemans #12;Detection of aeroacoustic sound sources on aircraft and wind turbines S. Oerlemans Thesis University;DETECTION OF AEROACOUSTIC SOUND SOURCES ON AIRCRAFT AND WIND TURBINES PROEFSCHRIFT ter verkrijging van de

Twente, Universiteit

54

Visitors Far and Wide  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

4 4 Visitors Far and Wide From left: Minister Danilov-Daniljan, Evan Mills (Assistant Director, Center for Building Science), Victoria Mats (interpreter and Soviet energy analyst), and Len Grossman (PG&E Energy Center) tour the PG&E Energy Center in San Francisco. The Russian Minister of Ecology and Natural Resources, Victor I. Danilov-Daniljan, spent three days in California as the Center's guest. The Minister presented information on current Soviet energy and environmental dilemmas and participated in a day-long roundtable discussion with representatives of major utilities, manufacturers of energy-efficient technologies, energy regulators, nongovernmental organizations, and Center scientists. Julian Aizenberg, one of the former Soviet Union's (FSU) foremost lighting

55

Island Wide Management Corporation  

Office of Legacy Management (LM)

9 1986 9 1986 Island Wide Management Corporation 3000 Marcus Avenue Lake Success, New York 11042 Dear Sir or Madam: I am sending you this letter and the enclosed information as you have been identified by L. I. Trinin of Glick Construction Company as the representatives of the owners of the property that was formerly the site of the Sylvania-Corning Nuclear Corporation in Bayside, New York. The Department of Energy is evaluating the radiological condition of sites that were utilized under the Manhattan Engineer District and/or the Atomic Energy Commission in the early years of nuclear energy development to determine whether they need remedial action and whether the Department has authority to perform such action. As you may know, the former Sylvania-Corning Corporation Bayside site was identified as one such site.

56

Advanced Materials for Aircraft Engine Applications  

Science Journals Connector (OSTI)

...strength and long creep lives, as-HIP material...cycle fatigue (LCF) lives. LCF is a failure...landing for an aircraft turbine engine). A classic...ductility and fatigue life. Examination ofLCF-tested...the atomizer, and residual dirt from gas supply lines and...

DANIEL G. BACKMAN; JAMES C. WILLIAMS

1992-02-28T23:59:59.000Z

57

Aircraft Power Generators: Hybrid Modeling and  

E-Print Network [OSTI]

Aircraft Power Generators: Hybrid Modeling and Simulation for Fault Detection ASHRAF TANTAWY University Integrated drive generators (IDGs) are the main source of electrical power for a number, and a majority of the existing FDI techniques for the electrical subsystem (brushless generator) are based

Koutsoukos, Xenofon D.

58

Aircraft Integrity and Reliability Carlos Ferregut  

E-Print Network [OSTI]

@unm.edu Abstract. In his recent paper "Probability theory needs an infusion of fuzzy logic to enhance its ability to deal with real-world problems", L. A. Zadeh explains that probability theory needs an infusion of fuzzy of a real-world problem for which such an infusion is indeed successful: the problems of aircraft integrity

Kreinovich, Vladik

59

Bayesian Methods for Aircraft Structural Health  

E-Print Network [OSTI]

.1 Introduction Aircraft structures, whether metallic or composite, are subject to service damage which requires on the inspection results obtained. If damage is detected from an inspection, the decision whether to repair as well dynamically, and compared to a model of the structure such that damage can be located and a determination made

Henderson, Thomas C.

60

the World Wide Web  

Office of Scientific and Technical Information (OSTI)

technical report has been made technical report has been made electronically available on the World Wide Web through a contribution from Walter L. Warnick In honor of Enrico Fermi Leader of the first nuclear reactor, Nobel Prize winner, and visionary technologist Dr. Warnick is delighted to be the first sponsor for posting a Department of Energy technical report and making it broadly available Office of Scientific and Technical Information Office of Science U.S. Department of Energy September 2008 osti.gov U N I T E D S T A T E S A T O M I C E N E R G Y C O M M I S S I O N AECD-3269 EXPERIMENTAL PRODUCTION OF A DNERGENT CHAIN REACTION BY E. Fermi January 4, 1952 [TIS Issuance ate] [chicago University] - T e c h n i c a l I n f o r m a t i o n S e r v i c e , O a k Ridge, T e n n e s s e e r ABSTRACTS Description of the construction and operation of the chain

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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61

Wide-Bandgap Semiconductors  

SciTech Connect (OSTI)

With the increase in demand for more efficient, higher-power, and higher-temperature operation of power converters, design engineers face the challenge of increasing the efficiency and power density of converters [1, 2]. Development in power semiconductors is vital for achieving the design goals set by the industry. Silicon (Si) power devices have reached their theoretical limits in terms of higher-temperature and higher-power operation by virtue of the physical properties of the material. To overcome these limitations, research has focused on wide-bandgap materials such as silicon carbide (SiC), gallium nitride (GaN), and diamond because of their superior material advantages such as large bandgap, high thermal conductivity, and high critical breakdown field strength. Diamond is the ultimate material for power devices because of its greater than tenfold improvement in electrical properties compared with silicon; however, it is more suited for higher-voltage (grid level) higher-power applications based on the intrinsic properties of the material [3]. GaN and SiC power devices have similar performance improvements over Si power devices. GaN performs only slightly better than SiC. Both SiC and GaN have processing issues that need to be resolved before they can seriously challenge Si power devices; however, SiC is at a more technically advanced stage than GaN. SiC is considered to be the best transition material for future power devices before high-power diamond device technology matures. Since SiC power devices have lower losses than Si devices, SiC-based power converters are more efficient. With the high-temperature operation capability of SiC, thermal management requirements are reduced; therefore, a smaller heat sink would be sufficient. In addition, since SiC power devices can be switched at higher frequencies, smaller passive components are required in power converters. Smaller heat sinks and passive components result in higher-power-density power converters. With the advent of the use of SiC devices it is imperative that models of these be made available in commercial simulators. This enables power electronic designers to simulate their designs for various test conditions prior to fabrication. To build an accurate transistor-level model of a power electronic system such as an inverter, the first step is to characterize the semiconductor devices that are present in the system. Suitable test beds need to be built for each device to precisely test the devices and obtain relevant data that can be used for modeling. This includes careful characterization of the parasitic elements so as to emulate the test setup as closely as possible in simulations. This report is arranged as follows: Chapter 2--The testing and characterization of several diodes and power switches is presented. Chapter 3--A 55-kW hybrid inverter (Si insulated gate bipolar transistor--SiC Schottky diodes) device models and test results are presented. A detailed description of the various test setups followed by the parameter extraction, modeling, and simulation study of the inverter performance is presented. Chapter 4--A 7.5-kW all-SiC inverter (SiC junction field effect transistors (JFET)--SiC Schottky diodes) was built and tested. The models built in Saber were validated using the test data and the models were used in system applications in the Saber simulator. The simulation results and a comparison of the data from the prototype tests are discussed in this chapter. Chapter 5--The duration test results of devices utilized in buck converters undergoing reliability testing are presented.

Chinthavali, M.S.

2005-11-22T23:59:59.000Z

62

Using doppler radar images to estimate aircraft navigational heading error  

DOE Patents [OSTI]

A yaw angle error of a motion measurement system carried on an aircraft for navigation is estimated from Doppler radar images captured using the aircraft. At least two radar pulses aimed at respectively different physical locations in a targeted area are transmitted from a radar antenna carried on the aircraft. At least two Doppler radar images that respectively correspond to the at least two transmitted radar pulses are produced. These images are used to produce an estimate of the yaw angle error.

Doerry, Armin W. (Albuquerque, NM); Jordan, Jay D. (Albuquerque, NM); Kim, Theodore J. (Albuquerque, NM)

2012-07-03T23:59:59.000Z

63

Wireless Sensor Network for Aircraft Health Monitoring Honeywell Labs  

E-Print Network [OSTI]

Wireless Sensor Network for Aircraft Health Monitoring Haowei Bai Honeywell Labs 3660 Technology Drive Minneapolis, MN 55418 haowei.bai@honeywell.com Mohammed Atiquzzaman School of Computer Science

Minnesota, University of

64

Numerical simulations of a vertical tail of a commercial aircraft...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of a commercial aircraft with active flow control Authors: Rasquin, M., Martin, J., Jansen, K. A series of numerical simulations of a realistic vertical tail of a commercial...

65

Hanford whole body counting manual  

SciTech Connect (OSTI)

This document describes the Hanford Whole Body Counting Program as it is administered by Pacific Northwest Laboratory (PNL) in support of the US Department of Energy--Richland Operations Office (DOE-RL) and its Hanford contractors. Program services include providing in vivo measurements of internally deposited radioactivity in Hanford employees (or visitors). Specific chapters of this manual deal with the following subjects: program operational charter, authority, administration, and practices, including interpreting applicable DOE Orders, regulations, and guidance into criteria for in vivo measurement frequency, etc., for the plant-wide whole body counting services; state-of-the-art facilities and equipment used to provide the best in vivo measurement results possible for the approximately 11,000 measurements made annually; procedures for performing the various in vivo measurements at the Whole Body Counter (WBC) and related facilities including whole body counts; operation and maintenance of counting equipment, quality assurance provisions of the program, WBC data processing functions, statistical aspects of in vivo measurements, and whole body counting records and associated guidance documents. 16 refs., 48 figs., 22 tabs.

Palmer, H.E.; Rieksts, G.A.; Lynch, T.P.

1990-06-01T23:59:59.000Z

66

V/STOL aircraft and method  

DOE Patents [OSTI]

Aircraft apparatus and method capable of V/STOL (vertical, short takeoff and landing) in addition to conventional flight are disclosed. For V/STOL operation, induced lift is provided by blowing air over the upper surface of each wing through a duct installed near the leading edge. Intake air is supplied to the blowing fan through a duct installed near the trailing edge, thus providing suction as well as blowing. Two fans in series are required. The engine provides power not only to the propeller but also to a transmission which provides power to the pulleys driving the belt-driven fans. 10 figs.

Owens, P.R.

1997-11-18T23:59:59.000Z

67

Swarms of UAVs and fighter aircraft  

SciTech Connect (OSTI)

This paper describes a method of modeling swarms of UAVs and/or fighter aircraft using particle simulation concepts. Recent investigations into the use of genetic algorithms to design neural networks for the control of autonomous vehicles (i.e., robots) led to the examination of methods of simulating large collections of robots. This paper describes the successful implementation of a model of swarm dynamics using particle simulation concepts. Several examples of the complex behaviors achieved in a target/interceptor scenario are presented.

Trahan, M.W.; Wagner, J.S.; Stantz, K.M.; Gray, P.C.; Robinett, R.

1998-11-01T23:59:59.000Z

68

Radiant Energy Power Source for Jet Aircraft  

SciTech Connect (OSTI)

This report beings with a historical overview on the origin and early beginnings of Radiant Energy Power Source for Jet Aircraft. The report reviews the work done in Phase I (Grant DE-FG01-82CE-15144) and then gives a discussion of Phase II (Grant DE-FG01-86CE-15301). Included is a reasonably detailed discussion of photovoltaic cells and the research and development needed in this area. The report closes with a historical perspective and summary related to situations historically encountered on projects of this nature. 15 refs.

Doellner, O.L.

1992-02-01T23:59:59.000Z

69

Multidisciplinary optimization of aircraft design and takeoff operations for low noise  

E-Print Network [OSTI]

Aircraft planform design, takeoff operations, and airfoil design are examined as a complete system in order to quantify tradeoffs that can result in a quiet aircraft. An aircraft design model was developed to generate ...

Jones, Anya Rachel

2006-01-01T23:59:59.000Z

70

A Crew-Centered Flight Deck Design Philosophy for High-Speed Civil Transport (HSCT) Aircraft  

Science Journals Connector (OSTI)

Past flight deck design practices used within the U.S. commercial transport aircraft industry have been highly successful in producing safe and efficient aircraft. However, recent advances in automation have changed the way pilots operate aircraft, and ...

Palmer Michael T.; Rogers William H.; Press Hayes N.; Latorella Kara A.; Abbott Terence S.

1995-01-01T23:59:59.000Z

71

Wide area augmentation of the Global Positioning System  

SciTech Connect (OSTI)

The Wide Area Augmentation System (WAAS) is being deployed by the Federal Aviation Administration (FAA) to augment the Global Positioning System (GPS). The WAAS will aid GPS with the following three services. First, it will broadcast spread-spectrum ranging signals from communication satellites. The airborne WAAS receiver will add these new ranging signals to the GPS constellation of measurements. By so doing, the augmented position fix will be less sensitive to the failure of individual system components, thus improving time availability and continuity of service. Second, the WAAS will use a nationwide ground network to monitor the health of all satellites over the airspace and flag situations which threaten flight safety. This data will be modulated on to the WAAS ranging signals and broadcast to the users, thereby guaranteeing the integrity of the airborne position fix. Third, the WAAS will use the ground network to develop corrections for the errors which currently limit the accuracy of unaugmented GPS. This data will also be included on the WAAS broadcast and will improve position accuracy from approximately 100 m to 8 m. When complete, the augmented system will provide an accurate position fix from satellites to an unlimited number of aircraft across the nation. It will be the primary navigation system for aircraft in oceanic routes, enroute over domestic airspace, in crowded metropolitan airspaces, and on airport approach.

Enge, P.; Walter, T.; Pullen, S.; Kee, C.; Chao, Y.C.; Tsai, Y.J. [Stanford Univ., CA (United States). Dept. of Aeronautics and Astronautics] [Stanford Univ., CA (United States). Dept. of Aeronautics and Astronautics

1996-08-01T23:59:59.000Z

72

Advanced aircraft ignition CRADA final report  

SciTech Connect (OSTI)

Conventional commercial and military turbo-jet aircraft engines use capacitive discharge ignition systems to initiate fuel combustion. The fuel-rich conditions required to ensure engine re-ignition during flight yield less than optimal engine performance, which in turn reduces fuel economy and generates considerable pollution in the exhaust. Los Alamos investigated two approaches to advanced ignition: laser based and microwave based. The laser based approach is fuel ignition via laser-spark breakdown and via photo-dissociation of fuel hydrocarbons and oxygen. The microwave approach involves modeling, and if necessary redesigning, a combustor shape to form a low-Q microwave cavity, which will ensure microwave breakdown of the air/fuel mixture just ahead of the nozzle with or without a catalyst coating. This approach will also conduct radio-frequency (RF) heating of ceramic elements that have large loss tangents. Replacing conventional systems with either of these two new systems should yield combustion in leaner jet fuel/air mixtures. As a result, the aircraft would operate with (1) considerable less exhaust pollution, (2) lower engine maintenance, and (3) significantly higher fuel economy.

Early, J.W.

1997-03-01T23:59:59.000Z

73

Fault prediction in aircraft engines using Self-Organizing Maps  

E-Print Network [OSTI]

Fault prediction in aircraft engines using Self- Organizing Maps Marie Cottrell1 , Patrice Gaubert1. Aircraft engines are designed to be used during several tens of years. Their maintenance is a challenging and costly task, for obvious security reasons. The goal is to ensure a proper operation of the engines

Paris-Sud XI, Université de

74

Wind parameters extraction from aircraft trajectories C. Hurtera,  

E-Print Network [OSTI]

Wind parameters extraction from aircraft trajectories C. Hurtera, , R. Alligiera,b , D. Gianazzaa traffic controllers need to know the current wind magnitude and direction since they impact every flying vessel. The wind may accel- erate or slow down an aircraft, depending on its relative direction

Paris-Sud XI, Université de

75

Aerodynamic Shape Optimization for Aircraft Design Antony Jameson  

E-Print Network [OSTI]

Aerodynamic Shape Optimization for Aircraft Design Antony Jameson Department of Aeronautics September 6-10, 2004 c A. Jameson 2004 Stanford University, Stanford, CA 1/55 Aerodynamic Shape Optimization for Aircraft Design #12;#12; Aerodynamic Design Tradeoffs A good first estimate of performance is provided

Stanford University

76

E-Print Network 3.0 - aircraft structural design Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

-equipped aircraft. The paper begins with a brief review of a method for designing a scheduling system that assigns... , control- lers could get aircraft over a designated...

77

E-Print Network 3.0 - aircraft design Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

-equipped aircraft. The paper begins with a brief review of a method for designing a scheduling system that assigns... , control- lers could get aircraft over a designated...

78

E-Print Network 3.0 - aircraft conflict resolution Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

that it work with the current aircraft conflict resolution... and aircraft ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and...

79

E-Print Network 3.0 - aircraft engine research Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A Simulator for Modeling Aircraft Surface Operations at Airports Summary: A Simulator for Modeling Aircraft Surface Operations at Airports Zachary Wood Univ. of Calif... NASA...

80

E-Print Network 3.0 - aircraft ndi development Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

later, new-concept NDI sensors for commercial aircraft skin inspection. Our prototype robot... Automated NonDestructive Inspector of Aging Aircraft Ian Davis and M. W. Siegel ......

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

E-Print Network 3.0 - aircraft nondestructive inspection Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

later, new-concept NDI sensors for commercial aircraft skin inspection. Our prototype robot... , the Automated NonDestructive Inspector (ANDI), holds to the aircraft ... Source:...

82

E-Print Network 3.0 - annual international aircraft Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

. 12;INFLUENCES ON AVIATION EMISSIONS 183 pay for aircraft. Annual transaction prices of aircraft were... Annu. Rev. Energy Environ. 2001. 26:167-200 ... Source: Waitz,...

83

E-Print Network 3.0 - aircraft heat source Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Utilization 15 26th INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES AN OPTIMIZATION MODEL FOR REDUCING AIRCRAFT TAXI Summary: AIRCRAFT TAXI TIMES AT THE DALLAS FORT...

84

E-Print Network 3.0 - aircraft air pollution Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

air pollution Search Powered by Explorit Topic List Advanced Search Sample search results for: aircraft air pollution Page: << < 1 2 3 4 5 > >> 1 Research in Military Aircraft...

85

E-Print Network 3.0 - aircraft exhaust sulfur Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

gases FAA, 2005. Water in the aircraft exhaust at altitude may have a greenhouse effect... . Aircraft exhaust emissions are calculated for the ... Source: Ecole...

86

E-Print Network 3.0 - aircraft exhaust gases Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

gases FAA, 2005. Water in the aircraft exhaust at altitude may have a greenhouse effect... . Aircraft ... Source: Ecole Polytechnique, Centre de mathmatiques...

87

Improving aircraft composite inspections using optimized reference standards  

SciTech Connect (OSTI)

The rapidly increasing use of composites on commercial airplanes coupled with the potential for economic savings associated with their use in aircraft structures means that the demand for composite materials technology will continue to increase. Inspecting these composite structures is a critical element in assuring this continued airworthiness. The FAA`s Airworthiness Assurance NDI Validation Center, in conjunction with the Commercial Aircraft Composite Repair committee, is developing a set of composite reference standards to be used in NDT equipment calibration for accomplishment of damage assessment and post-repair inspection of all commercial aircraft composites. In this program, a series of NDI tests on a matrix of composite aircraft structures and prototype reference standards were completed in order to minimize the number of standards needed to carry out composite inspections on aircraft. Two tasks, related to composite laminates and non-metallic composite honeycomb configurations, were addressed.

Roach, D.; Dorrell, L. [Sandia National Labs., Albuquerque, NM (United States). FAA Airworthiness Assurance NDI Validation Center; Kollgaard, J. [Boeing Commercial Aircraft Co., Seattle, WA (United States); Dreher, T. [United Airlines (United States)

1998-10-01T23:59:59.000Z

88

ROSAT wide field camera mirrors  

Science Journals Connector (OSTI)

The ROSAT wide field camera (WFC) is an XUV telescope operating in the 12–250-eV energy band. The mirror system utilizes Wolter-Schwarzschild type I (WS I) grazing incidence optics...

Willingale, R

1988-01-01T23:59:59.000Z

89

Radioactive Waste Management Complex Wide Review | Department...  

Office of Environmental Management (EM)

Radioactive Waste Management Complex Wide Review Radioactive Waste Management Complex Wide Review The main goal of this complex-wide review was to obtain feedback from DOE sites...

90

IT body-talk  

Science Journals Connector (OSTI)

......unique physical or behavioural characteristic of the human body which may be...providing secure access to company intranets for remote staff needing access...unique physical or behavioural characteristic of the human body which may be......

Mark Lockie

2000-09-01T23:59:59.000Z

91

Chemical composition of exhaust from aircraft turbine engines  

SciTech Connect (OSTI)

This paper reports measurement of the chemical composition of exhaust from two aircraft tubing engines. The two engines are the F101, used on the B-1B aircraft, and the F110, used on the F-16C and F-16D aircraft. Samples were collected from each engine using a probe positioned just behind the exhaust nozzle. The measurements reported her were made at four power settings from idle to intermediate power. Exhaust composition measurements included carbon monoxide, carbon dioxide, nitrogen oxides, total hydrocarbons, and individual organic species. The principle focus of this paper is on the detailed organic species results.

Spicer, C.W.; Holdren, M.W.; Smith, D.L. (Battelle, Columbus, OH (US)); Hughes, D.P. (Tinker AFB, Oklahoma City, OK (US)); Smith, M.D. (Environics Div., Tyndall AFB, Panama City, FL (US))

1992-01-01T23:59:59.000Z

92

World Wide Web Information Servers  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

World Wide Web Information Servers World Wide Web Information Servers Lawrence Berkeley Laboratory recently announced a gopher and World Wide Web site. To get to the web site, telnet to www.lbl.gov, login: www. Access is provided to LBL's gopher, library catalog, and publication list. The Center is funding the implementation of a WWW network node for on-line access to publications, databases, and documents full of hypermedia links to other documents or information systems from the Energy & Environment Division. Full implementation is expected by May 1994, and will include access to a variety of information from all the research programs and centers. The technology transfer project calls for this newsletter to be published on WWW using the Mosaic interface under development at the National Center

93

E-Print Network 3.0 - aircraft gas turbines Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

turbines Search Powered by Explorit Topic List Advanced Search Sample search results for: aircraft gas turbines...

94

E-Print Network 3.0 - aircraft turbine engine Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

engine Search Powered by Explorit Topic List Advanced Search Sample search results for: aircraft turbine engine...

95

Wide field of view telescope  

DOE Patents [OSTI]

A wide field of view telescope having two concave and two convex reflective surfaces, each with an aspheric surface contour, has a flat focal plane array. Each of the primary, secondary, tertiary, and quaternary reflective surfaces are rotationally symmetric about the optical axis. The combination of the reflective surfaces results in a wide field of view in the range of approximately 3.8.degree. to approximately 6.5.degree.. The length of the telescope along the optical axis is approximately equal to or less than the diameter of the largest of the reflective surfaces.

Ackermann, Mark R. (Albuquerque, NM); McGraw, John T. (Placitas, NM); Zimmer, Peter C. (Albuquerque, NM)

2008-01-15T23:59:59.000Z

96

CHARBEL FARHAT Vivian Church Hoff Professor of Aircraft Structures  

E-Print Network [OSTI]

of Aeronautics and Astronautics Director, Army High Performance Computing Research Center Professor, Department-Driven Systems, Finite Element Approximation, Fluid-Structure Interaction, High Performance Computing, Implosion of Aircraft Structures, Stanford University 2007- Director, Army High Performance Computing Research Center

Farhat, Charbel

97

High-order computational fluid dynamics tools for aircraft design  

Science Journals Connector (OSTI)

...sustainable (green) aviation. In Recent advances in aircraft technology (ed...applications. In 47th AIAA Aerospace Sciences Meeting, AIAA 2009-176...mechanics. In Proc. 47th AIAA Aerospace Sciences Meeting and Exhibit. AIAA Paper...

2014-01-01T23:59:59.000Z

98

Using Heuristics to Solve the Dedicated Aircraft Recovery Problem ...  

E-Print Network [OSTI]

Nov 12, 2001 ... Aircraft can only be swapped if they are of the same type, except Boeing. 757 and 767 , which can be swapped. • Only cancel here-and-back ...

2001-11-12T23:59:59.000Z

99

Intelligent weather agent for aircraft severe weather avoidance  

E-Print Network [OSTI]

Severe weather conditions pose a large threat to the safety of aircraft, since they are responsible for a large percentage of aviation related accidents. With the advent of the free flight environment, the exigency for an autonomous severe weather...

Bokadia, Sangeeta

2012-06-07T23:59:59.000Z

100

Improving commonality implementation in the cockpits of commercial aircraft  

E-Print Network [OSTI]

Product development is a major source of competitive advantage in the commercial aircraft business. Judiciously implementing commonality across a range of products yields important benefits in this area. Thus, measuring ...

Bador, Damien (Damien Pierre Marcellin Dominique)

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

DOE - Office of Legacy Management -- Northrup Aircraft Co Inc...  

Office of Legacy Management (LM)

Year: 1987 CA.0-02-1 CA.0-02-2 Site Operations: Participated in projects involving nuclear energy for the propulsion of aircraft. CA.0-02-1 Site Disposition: Eliminated - No...

102

Review Lecture: The Technical Aspects of Supersonic Civil Transport Aircraft  

Science Journals Connector (OSTI)

...conventional subsonic civil aircraft. The physical, economic and ecological environments in which the supersonic transport must operate...experiment, of the practical parameters and features for such a vehicle. The Royal Society is collaborating with JSTOR to digitize...

1974-01-01T23:59:59.000Z

103

Aspects of Aging Aircraft: A TransAtlantic View  

Science Journals Connector (OSTI)

This paper will discuss from a regulatory viewpoint some of the key technical matters in the ageing aircraft issue. Attention is focused primarily on research topics of interest, for an overview of the CAA app...

John W. Bristow

1991-01-01T23:59:59.000Z

104

Techniques for Intravascular Foreign Body Retrieval  

SciTech Connect (OSTI)

As endovascular therapies increase in frequency, the incidence of lost or embolized foreign bodies is increasing. The presence of an intravascular foreign body (IFB) is well recognized to have the potential to cause serious complications. IFB can embolize and impact critical sites such as the heart, with subsequent significant morbidity or mortality. Intravascular foreign bodies most commonly result from embolized central line fragments, but they can originate from many sources, both iatrogenic and noniatrogenic. The percutaneous approach in removing an IFB is widely perceived as the best way to retrieve endovascular foreign bodies. This minimally invasive approach has a high success rate with a low associated morbidity, and it avoids the complications related to open surgical approaches. We examined the characteristics, causes, and incidence of endovascular embolizations and reviewed the various described techniques that have been used to facilitate subsequent explantation of such materials.

Woodhouse, Joe B.; Uberoi, Raman, E-mail: raman.uberoi@orh.nhs.uk [Oxford University Hospitals (United Kingdom)

2013-08-01T23:59:59.000Z

105

Fever and Body Temperature  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Fever and Body Temperature Fever and Body Temperature Name: Ying Location: N/A Country: N/A Date: N/A Question: Hi, I have a few questions that I want to ask you: Why does your body chose to raise its temperature when you have a fever? Replies: Most bacteria and viruses that live in your body grow best at body temperature. They don't grow very well when the temperature is raised. When there are bacteria in your body they give off chemicals that signal white blood cells to come to try to eat them and also affect an area in your brain called the hypothalamus. This part of the brain controls alot of the automatic functions in your body and is also the site of your body's "thermostat". When the chemicals from the bacteria circulate through the hypothalamus it sets the body's temperature higher. This is called a fever. Your body kind of tries to "sweat out" the bacteria and kill them with a higher temperature. Some scientists question whether trying to bring down a fever is the best thing to do. If it isn't too high, some believe we should just let it work

106

Leading the way in aircraft noise reduction Aircraft noise threatens the growth of the important UK aerospace manufacturing sector.  

E-Print Network [OSTI]

of Computational Aero-acoustics, Phil Joseph, Professor of acoustical engineering and turbo-machinery noise and Dr aircraft worth ÂŁ2.0 trillion; the UK will retain or expand its current 17 per cent share of this m

Sóbester, András

107

Wide Bandgap Extrinsic Photoconductive Switches  

SciTech Connect (OSTI)

Photoconductive semiconductor switches (PCSS) have been investigated since the late 1970s. Some devices have been developed that withstand tens of kilovolts and others that switch hundreds of amperes. However, no single device has been developed that can reliably withstand both high voltage and switch high current. Yet, photoconductive switches still hold the promise of reliable high voltage and high current operation with subnanosecond risetimes. Particularly since good quality, bulk, single crystal, wide bandgap semiconductor materials have recently become available. In this chapter we will review the basic operation of PCSS devices, status of PCSS devices and properties of the wide bandgap semiconductors 4H-SiC, 6H-SiC and 2H-GaN.

Sullivan, J S

2012-01-17T23:59:59.000Z

108

Sparsely correlated hidden Markov models with application to genome-wide location studies  

Science Journals Connector (OSTI)

......body) Heterochromatin (Heterochr); nuclear lamina (41-42) 80 171 1 100 873 1...ChIP enrichment in multiple ChIP-seq dataset simultaneously. Typically, genome-wide...in a multivariate form in genome-wide datasets owing to rapidly rising complexity. Furthermore......

Hyungwon Choi; Damian Fermin; Alexey I. Nesvizhskii; Debashis Ghosh; Zhaohui S. Qin

2013-03-01T23:59:59.000Z

109

Maintaining body temperature  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Maintaining body temperature Maintaining body temperature Name: Jeff Location: N/A Country: N/A Date: N/A Question: What keeps the human body at a constant temperature of 98.6? Replies: Maintaining body temperature is very complex. It also takes a lot of energy. About 80% of the energy from the food you eat goes to maintaining body temperature. Basically, the chemical reactions of metabolism of stored food, especially fats, generate heat as a by product. This heat warms the body. The brain reads temperature and controls to some extent the rate of this metabolism. There are also many other mechanisms triggered by the brain to keep the core of your body warm, even if the periphery (skin) is cold. Blood vessels to the fingers and toes constrict, so that the cold air doesn't cool the blood too much, so that cooled blood doesn't cool down the heart and brain when it returns. In severe cases, your body will sacrifice a finger or a toe to keep you from dying of cold core temperature (frostbite: it saves your life!). Also the brain can order a lot of muscles to contract rapidly. This generates a lot of heat quickly, a response called shivering. There's much more to this exciting field of research.

110

BODY COMPOSITION -ENERGY EXPENDITURE  

E-Print Network [OSTI]

BODY COMPOSITION - ENERGY EXPENDITURE Validation of dual, X-ray absorptiometry (DXA) for body for BW, BMC and FC were significantly correlated with scale BW (r== 0.999), chemical calcium (r=0.992) and chemical fat (r= 0.971).Regression analy- sis showed that BW was accurately mea- sured, but FC

Paris-Sud XI, Université de

111

Hanford Site Wide Programs - Hanford Site  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Decrease Font Size Hanford Site Wide Programs Hanford Safety Hanford Site Wide Programs Hanford Fire Department Health & Safety Exposition Hanford Traffic Safety Hanford...

112

Opportunities for Wide Bandgap Semiconductor Power Electronics...  

Energy Savers [EERE]

Opportunities for Wide Bandgap Semiconductor Power Electronics for Hydrogen and Fuel Cell Applications Opportunities for Wide Bandgap Semiconductor Power Electronics for Hydrogen...

113

OSTI News Transcripts, WorldWideScience Alliance Established (June 2008) |  

Office of Scientific and Technical Information (OSTI)

WorldWideScience Alliance Established (June 2008) WorldWideScience Alliance Established (June 2008) June 2008 WorldWideScience Alliance established Listen Now WorldWideScience Alliance Established Music intro WorldWideScience.org now has a permanent governing body ? the WorldWideScience Alliance. The Alliance was formally established June 12, as officials representing 38 countries gathered to sign the "founding document" in Seoul, Korea. These national and organizational commitments are important, as they will sustain and build upon WorldWideScience.org - which is the online gateway to science information issued from nations around the world. OSTI is Operating Agent for WorldWideScience.org. Dr. Walter Warnick, Director of OSTI, presided over the signing ceremony in Seoul. Here he is, speaking to the newly formed Alliance:

114

Subjective response to low?frequency aircraft noise  

Science Journals Connector (OSTI)

The standard metric currently in use by the U.S. government for community noise from aircraft is the day?night level (DNL) which is based on the A?weighting network. However residents of communities near airports have reported annoyance due to aircraft noise in greater proportion than what the DNL contour associated with their address predicts. Complaints of ‘‘distant rumbling’’ appear to be related to the low?frequency noise that aircraft produce for which the DNL metric does not fully account. This presentation discusses measurements made in October 2004 at two residences near runways at Washington?Dulles International Airport. Noise data are recorded both inside and outside the structures allowing for a measure of the events’ impact both inside and outside the structure as well as the filtering effect of the structure on the signal. Laboratory subjective evaluation studies of the recorded aircraft signatures are conducted. Objective metrics those that are designed for low?frequency noise and those that are not are calculated and correlated with subjective rankings of the signatures. This gauges the metrics’ effectiveness in predicting subjective perception of aircraft noise signatures. [Work supported by the Federal Aviation Administration and the Exploratory and Foundational Program of the Applied Research Laboratory Penn State University.

2005-01-01T23:59:59.000Z

115

Aircraft tracking by means of the Acoustical Doppler Effect  

Science Journals Connector (OSTI)

The present paper presents a passive acoustic method for aircraft tracking. The Acoustical Doppler Effect, characteristic of signals received by a mesh of spatially distributed microphones is the basis of the method. A one-dimensional version of the Ambiguity function permits the calculation of the frequency stretch factor that exists between the sound signals received by a pair of microphones. The expression for this frequency stretch is a function of the aircraft position and velocity which are estimated by a Genetic Algorithm. The method is suitable for all kinds of aircraft and requires only seven microphones plus the prior knowledge of only the aircraft position and velocity at a given time. Results are given for a simulation test of a 3D straight trajectory of the aircraft and for a sound-propagation model which considers geometrical spreading and atmospheric absorption of sound for a homogeneous medium. The influence of the atmospheric absorption is evaluated and the independence of the method with respect to microphone distribution is proven. The performance of the tracking method has also been evaluated in front of possible inaccuracy on the microphones synchronization.

Sara R. Martín; Meritxell Genescŕ; Jordi Romeu; Teresa Pŕmies

2013-01-01T23:59:59.000Z

116

Finite-difference modeling of commercial aircraft using TSAR  

SciTech Connect (OSTI)

Future aircraft may have systems controlled by fiber optic cables, to reduce susceptibility to electromagnetic interference. However, the digital systems associated with the fiber optic network could still experience upset due to powerful radio stations, radars, and other electromagnetic sources, with potentially serious consequences. We are modeling the electromagnetic behavior of commercial transport aircraft in support of the NASA Fly-by-Light/Power-by-Wire program, using the TSAR finite-difference time-domain code initially developed for the military. By comparing results obtained from TSAR with data taken on a Boeing 757 at the Air Force Phillips Lab., we hope to show that FDTD codes can serve as an important tool in the design and certification of U.S. commercial aircraft, helping American companies to produce safe, reliable air transportation.

Pennock, S.T.; Poggio, A.J.

1994-11-15T23:59:59.000Z

117

Technology: Beyond the body  

Science Journals Connector (OSTI)

... series of video debates on topics such as cognition-enhancing drugs, life-span extension and transhumanism— the idea that humans can transcend their bodies through technology. My favourite is ...

Ewen Callaway

2012-08-08T23:59:59.000Z

118

Body powered thermoelectric systems  

E-Print Network [OSTI]

Great interest exists for and progress has be made in the effective utilization of the human body as a possible power supply in hopes of powering such applications as sensors and continuously monitoring medical devices ...

Settaluri, Krishna Tej

2012-01-01T23:59:59.000Z

119

eGSE America: Electric Aircraft Cargo Conveyor Technical Specification  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

EACC Technical Specifications EACC Technical Specifications eGSE America: Electric Aircraft Cargo Conveyor (EACC) Technical Specifications Revision 00 August 2005 Prepared by Electric Transportation Applications eGSE America: EACC Technical Specifications 1.0 SCOPE: This document outlines the design and performance requirements for a battery- powered, self propelled belt conveyor for handling baggage and cargo at aircraft bulk cargo holds. The use of "shall" in this document indicates a mandatory requirement. The use of "should" indicates a recommendation or that which is advised but not required. 2.0 APPLICABLE DOCUMENTS: Portions of the following documents to the extent specified herein are a part of this Recommended Practice.

120

Fuel Cell Technologies Office: DOD-DOE Aircraft Petroleum Use Reduction  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DOD-DOE Aircraft DOD-DOE Aircraft Petroleum Use Reduction Workshop to someone by E-mail Share Fuel Cell Technologies Office: DOD-DOE Aircraft Petroleum Use Reduction Workshop on Facebook Tweet about Fuel Cell Technologies Office: DOD-DOE Aircraft Petroleum Use Reduction Workshop on Twitter Bookmark Fuel Cell Technologies Office: DOD-DOE Aircraft Petroleum Use Reduction Workshop on Google Bookmark Fuel Cell Technologies Office: DOD-DOE Aircraft Petroleum Use Reduction Workshop on Delicious Rank Fuel Cell Technologies Office: DOD-DOE Aircraft Petroleum Use Reduction Workshop on Digg Find More places to share Fuel Cell Technologies Office: DOD-DOE Aircraft Petroleum Use Reduction Workshop on AddThis.com... Publications Program Publications Technical Publications Educational Publications

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

An approach to predict operational performance of airline schedules using aircraft assignment key performance indicators  

E-Print Network [OSTI]

This thesis presents an approach for predicting operational performance of airlines on the basis of flight schedules and aircraft assignments. The methodology uses aggregate measures of properties of aircraft assignments, ...

Riedel, Robin

2006-01-01T23:59:59.000Z

122

Development of an aerodynamic/RCS framework for the preliminary design of a hypersonic aircraft  

E-Print Network [OSTI]

The design of hypersonic airbreathing aircraft pushes the envelope of current state-ofthe-art aerospace propulsion and materials technology. Therefore, these aircraft are highly integrated to produce adequate thrust, reduce ...

Dicara, Daniel L

2006-01-01T23:59:59.000Z

123

Biplane to monoplane: twenty years of technological development in British fighter aircraft, 1919-1939   

E-Print Network [OSTI]

In the summer of 1940 around five thousand aircraft clashed during several months for control of the skies over Britain. The fighter aircraft used by the German Luftwaffe and British Royal Air Force were, for the most ...

Kelly, Paul

2014-07-01T23:59:59.000Z

124

he U.S. Coast Guard expects all of its Sikorsky Aircraft MH-60T  

E-Print Network [OSTI]

to have an Aircraft Diagnostic Vibration Management System (ADVMS) installed by 2018. It chose Honeywell also save Vol. 59, No. 3 1 The U.S.Coast Guard selected Honeywell late last year to supply the Aircraft

Almor, Amit

125

16.885J / ESD.35J Aircraft Systems Engineering, Fall 2003  

E-Print Network [OSTI]

Subject addresses a holistic systems engineering approach for aircraft development. Focuses on the conceptual phase of product definition during which all aspects relevant to a new or derivative aircraft must be considered. ...

Hansman, Robert John

126

E-Print Network 3.0 - aircraft icing training Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: effects on aircraft performance. Although anti-icing devices such as de-icing boots and heating strips... help, ice accretions can still build up and affect the aircraft...

127

E-Print Network 3.0 - attack aircraft Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: effects on aircraft performance. Although anti-icing devices such as de-icing boots and heating strips... help, ice accretions can still build up and affect the aircraft...

128

E-Print Network 3.0 - aircraft deicing fluid Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: effects on aircraft performance. Although anti-icing devices such as de-icing boots and heating strips... help, ice accretions can still build up and affect the aircraft...

129

E-Print Network 3.0 - aircraft surveys Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: effects on aircraft performance. Although anti-icing devices such as de-icing boots and heating strips... help, ice accretions can still build up and affect the aircraft...

130

The impact of aircraft design reference mission on fuel efficiency in the air transportation system  

E-Print Network [OSTI]

Existing commercial aircraft are designed for high mission flexibility, which results in decreased fuel efficiency throughout the operational life of an aircraft. The objective of this research is to quantify the impact ...

Yutko, Brian M. (Brian Matthew)

2014-01-01T23:59:59.000Z

131

Capturing the Impact of Fuel Price on Jet Aircraft Operating Costs with Engineering and Econometric Models  

E-Print Network [OSTI]

Capturing the Impact of Fuel Price on Jet Aircraft OperatingCapturing the Impact of Fuel Price on Jet Aircraft Operatingare in part due to fuel price uncertainty. To address this

Smirti Ryerson, Megan; Hansen, Mark

2009-01-01T23:59:59.000Z

132

The design of electric motor car's body network based on CAN-bus distributed control  

Science Journals Connector (OSTI)

CAN-bus is a typical bus control technology, and is now widely applied in many areas. In view of the characteristics of the electric vehicle body, this paper puts forward a plan that applies CAN-bus technology to build electric vehicle body network. ... Keywords: CAN bus, distributed control, electric car and body network

Wang Jianfeng; Wang Dafang; Xiong Jie

2009-06-01T23:59:59.000Z

133

External vs. body temperature  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

External vs. body temperature External vs. body temperature Name: jacqui Location: N/A Country: N/A Date: N/A Question: If one's internal body temperature is approximately 98.6, WHY when the external temperature is 98.6 do we feel hot? Since both temperatures are "balanced", shouldn't we feel comfortable? I am assuming here that humidity levels are controlled, and play no factor in the external temperature. Replies: First of all, skin temperature is lower than 98.6F; 98.6F is internal body temperature, so air at 98.6F is hotter than skin. But more important, it is the nervous system, and the cells in your skin that your brain uses to detect temperature that determine whether you "feel" hot or not, not whether the air is hotter than your skin. These are set so that you feel hot when the air is actually colder than your skin. Why? They are probably set to make you feel hot whenever the air is warm enough so that your body has some trouble getting rid of the excess heat it produces through metabolism. This insures that you take some actions to help your body cool off. Like drinking cool water, or reducing exercise

134

E-Print Network 3.0 - aircraft missiles weapons Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Naval Research Summary: Program managers 467 Program managers Aircraft carriers Combat boots Combat ships Submarines Weapons... Axisymmetric Missile Configuration Hypersonic...

135

E-Print Network 3.0 - aircraft exhaust aerosol Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Nucleus Counter: Instrumental Characterization and Stratospheric Measurements Summary: atmospheric pollution sources like aircraft exhaust plumes. The COPAS instrument has been...

136

Feasibility Analysis of Aircraft Landing Scheduling for Non-Controlled Airports  

E-Print Network [OSTI]

Feasibility Analysis of Aircraft Landing Scheduling for Non-Controlled Airports AIAA-2004 airports Air traffic control automation system development Trajectory analysis Aircraft landing scheduling aircraft scheduling will become the key operational issue at non-controlled airports as the operation

Valasek, John

137

Method for Weight Control Engineering Management to Evaluate Single Engine Aircraft Weighing Activities  

E-Print Network [OSTI]

There is no greater task for a Weight Control Engineer than determining an aircraft’s weight and center of gravity (CG). Although the concept of balance or CG is easy to grasp, calculating or measuring it for complex objects, such as an aircraft...

Brown, Patrick M.

2007-05-18T23:59:59.000Z

138

Fuel-Burn Impact of Re-Designing Future Aircraft with Changes in Mission Specifications  

E-Print Network [OSTI]

., with permission. AIAA SciTech #12;SA Single aisle aircraft SFC Engine specific fuel consumption Sref Reference.S.A. Over the past few years, pressure to reduce the overall fuel consumption of the commer- cial aircraftFuel-Burn Impact of Re-Designing Future Aircraft with Changes in Mission Specifications Anil

Alonso, Juan J.

139

Stochastic Gust Analysis Techniques for Aircraft Conceptual Design  

E-Print Network [OSTI]

employs Lyapunov and matched filter theory methods to address the stochastic nature of the gust response loads are already being incorporated into commercial aircraft; future environ- mental prospects demand, Massachusetts Institute of Technology. §Professor, AIAA Fellow, Department of Aeronautics and Astronautics, St

Stanford University

140

Safe Set Protection and Restoration for Unimpaired and Impaired Aircraft  

E-Print Network [OSTI]

/s T engine thrust, lb e elevator position, deg m vehicle mass, slugs Iy principal moment of inertia Y within the safe set. When an aircraft is impaired, e.g., a jammed elevator or an engine loss, the safe@technosci.com. 1 of 9 American Institute of Aeronautics and Astronautics #12;(x) cost function associated with time

Kwatny, Harry G.

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Aircraft AC Generators: Hybrid System Modeling and Simulation  

E-Print Network [OSTI]

1 Aircraft AC Generators: Hybrid System Modeling and Simulation Ashraf Tantawy, Student Member--Integrated Drive Generators (IDGs) are the main source of electrical power for a number of critical systems is a difficult task. dq0 models have been developed for design and control of generators, but these models

Koutsoukos, Xenofon D.

142

High-order computational fluid dynamics tools for aircraft design  

Science Journals Connector (OSTI)

...future growth in aviation, reducing fuel burn, GHG emission and noise become imperative...aggressive goals in aircraft performance, fuel burn, GHG emission and noise, which is an...doi:10.1006/jcph.2000.6478 ) 45 Roe, PL . 1981 Approximate Riemann solvers...

2014-01-01T23:59:59.000Z

143

Aircraft Measurements of the Concentration and Flux of Agrochemicals  

Science Journals Connector (OSTI)

Aircraft Measurements of the Concentration and Flux of Agrochemicals ... The use of agrochemicals, such as insecticides and herbicides, is of great environmental concern. ... To quantify and model the volatilization and deposition of these agrochemicals, measurements of the exchange rates between the atmosphere and different surfaces are required. ...

T. Zhu; R. L. Desjardins; J. I. MacPherson; E. Pattey; G. St. Amour

1998-03-07T23:59:59.000Z

144

Selling body organs  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Selling body organs Selling body organs Name: Betty A Laliberte Location: N/A Country: N/A Date: N/A Question: If a tissue donor dies and some of his/her tissue is donated, should the family be given money or some other benefit? I am a freshman at York HS and am doing a bioethics project. Replies: An interesting question. In my opinion, a family should not receive payment for organ donation. That would introduce an economic element into the decision, which does not seem appropriate. One problem is: Who will pay? The recipient? What if he can't afford it? Who gets the organ? The highest bidder? I guess part of my problem with selling organs and tissues is religious in nature. To me, my life and my body were given freely to me and they are not mine to sell to someone else. They certainly do not belong to my family to profit from.

145

Wide Bandgap Semiconductors: Pursuing the Promise  

Broader source: Energy.gov [DOE]

Wide bandgap semiconductor materials are more efficient than their silicon-based counterparts; making it possible to reduce weight, volume, and life-cycle costs in a wide range of power applications.

146

Modeling of a Signal Processing System for Aircraft Air Data  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Modeling of a Signal Processing System for Aircraft Air Data Modeling of a Signal Processing System for Aircraft Air Data Instrumentation Speaker(s): Thomas John Rohloff Date: September 21, 1998 - 12:00pm Location: 90-3148 Seminar Host/Point of Contact: Joan M. Daisey The velocity, attitude and altitude of flight vehicles have typically been measured with booms that extend from the vehicle surface out into the flow field. However, this arrangement was found to be unacceptable for certain flight applications. Instrumentation was therefore developed by other researchers to measure the flight parameters using an array of pressure measurements located on the surface of the vehicle. The relationship between these pressure measurements and the air data is a complex non-linear function that is not easily described with simple aerodynamic

147

DOD-DOE Aircraft Petroleum Use Reduction Workshop Agenda  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DOD-DOE Workshop DOD-DOE Workshop Aircraft Petroleum Use Reduction: Can Fuel Cells be a Game Changer? U.S. Department of Energy, Washington, DC 4 th Floor Conference Room (4A-104) September 30, 2010 8:30 am to 5 pm Agenda 8:30 am Welcome, introductions and mtg logistics: Pete Devlin (DOE EERE FCTP) Overall Purpose * To begin discussing collaboration across DOD and DOE in keeping with the MOU * To motivate RD&D for APU applications and identify R&D challenges * To identify the next steps and potential collaboration Background Materials Provided * DOD-DOE MOU * NASA/UTC SOFC APU Feasibility Study for Long Range Commercial Aircraft 9:00 am DOE Perspective - Henry Kelly (US DOE Dep. Principal Asst. Sect. of Energy) 9:15 am MOU Overview - Richard Kidd (DOE EERE FEMP)

148

Enterprise-Wide Agreements | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Enterprise-Wide Enterprise-Wide Agreements Enterprise-Wide Agreements DOE's Office of the Chief Information Officer (OCIO) has designed the IT Acquisition: Enterprise-Wide Agreement (EWA) Program to develop and implement policies and procedures that support the identification, acquisition, oversight and compliance of enterprise licenses. EWAs are Department-wide acquisitions of widely used commercial software. The EWA Program has two core objectives to achieve the Program mission : Maximizing IT buying power and reducing total cost of ownership; Streamlining the IT total acquisition lifecycle. The EWA Program applies a centralized, cross-functional, strategic enterprise software solutions approach. The EWA Program leverages opportunities to create efficiencies and enhances the value of IT

149

Characterization of aircraft noise during thrust reverser engagement  

Science Journals Connector (OSTI)

Airport noise impact on communities has been an area of considerable study. However it has been determined that thrust reverser engagement is an area requiring further research. This paper presents findings on thrust reverser from a noise study done at Washington?Dulles International Airport (IAD) in October of 2004. Previous studies have found that high levels of acoustic energy in commercial aircraft during takeoff are contained below 300 Hz [Sharp Ben H. Guovich Yuri A. and Albee William W. ‘‘Status of Low?Frequency Aircraft Noise Research and Mitigation ’’ Wyle Report WR 01?21 San Francisco September 2001]. Preliminary analysis of thrust reverser signatures indicates similar findings. A categorization of aircraft noise during thrust reverser engagement is given and looks at factors that may affect the noise characteristics. Some of these factors include: plane type engine type and thrust ratings. In addition a brief analysis of frequency weightings of the Equivalent Sound Level (Leq) and Sound Exposure Level (SEL) metrics and their application to thrust reverser noise is discussed. [Work supported by the Federal Aviation Administration.

2005-01-01T23:59:59.000Z

150

Alteration And Geochemical Zoning In Bodie Bluff, Bodie Mining District,  

Open Energy Info (EERE)

Alteration And Geochemical Zoning In Bodie Bluff, Bodie Mining District, Alteration And Geochemical Zoning In Bodie Bluff, Bodie Mining District, Eastern California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Alteration And Geochemical Zoning In Bodie Bluff, Bodie Mining District, Eastern California Details Activities (0) Areas (0) Regions (0) Abstract: Banded, epithermal quartz-adularia veins have produced about 1.5 million ounces of gold and 7 million ounces of silver from the Bodie mining district, eastern California. The veins cut dacitic lava flows, pyroclastic rocks and intrusions. Sinter boulders occur in a graben structure at the top of Bodie Bluff and fragments of sinter and mineralized quartz veins occur in hydrothermal breccias nearby. Explosive venting evidently was part of the evolution of the ore-forming geothermal systems which, at one time,

151

DFAS Wide-Area Workflow Issues  

Broader source: Energy.gov [DOE]

Presentation covers the DFAS wide-area workflow issues and is given at the Spring 2011 Federal Utility Partnership Working Group (FUPWG) meeting.

152

A LINGUISITICAL ANALYSIS OF WORLD WIDE WEB QUERIES Bernard J. Jansen  

E-Print Network [OSTI]

A LINGUISITICAL ANALYSIS OF WORLD WIDE WEB QUERIES Bernard J. Jansen Computer Science Program@exmail.usma.edu Please Cite: Jansen, B. J., Spink, A., & Pfaff, A. 2000. Linguistic Aspects of Web Queries. American. There is also a growing body of literature focusing on IR in the context of the Web (Croft, 1995; Jansen, Spink

Jansen, James

153

Photoacoustic tomography of foreign bodies in soft biological tissue  

E-Print Network [OSTI]

body despite using low doses of radiation. Most importantly, x-ray contrast is not appropriate tissues. To achieve deep penetration, we use near-infrared light ranging from 750 to 800 nm and a 5-MHz and high cost. US imaging is widely used in clinics because of its real-time display, zero ionizing

Wang, Lihong

154

Experimental flight test vibration measurements and nondestructive inspection on a USCG HC-130H aircraft  

SciTech Connect (OSTI)

This paper presents results of experimental flight test vibration measurements and structural inspections performed by the Federal Aviation Administration`s Airworthiness Assurance NDI Validation Center (AANC) at Sandia National Laboratories and the US Coast Guard Aircraft Repair and Supply Center (ARSC). Structural and aerodynamic changes induced by mounting a Forward Looking Infrared (FLIR) system on a USCG HC-130H aircraft are described. The FLIR adversely affected the air flow characteristics and structural vibration on the external skin of the aircraft`s right main wheel well fairing. Upon initial discovery of skin cracking and visual observation of skin vibration in flight by the FLIR, a baseline flight without the FLIR was conducted and compared to other measurements with the FLIR installed. Nondestructive inspection procedures were developed to detect cracks in the skin and supporting structural elements and document the initial structural condition of the aircraft. Inspection results and flight test vibration data revealed that the FLIR created higher than expected flight loading and was the possible source of the skin cracking. The Coast Guard performed significant structural repair and enhancement on this aircraft, and additional in-flight vibration measurements were collected on the strengthened area both with and without the FLIR installed. After three months of further operational FLIR usage, the new aircraft skin with the enhanced structural modification was reinspected and found to be free of flaws. Additional US Coast Guard HC-130H aircraft are now being similarly modified to accommodate this FLIR system. Measurements of in-flight vibration levels with and without the FLIR installed, and both before and after the structural enhancement and repair were conducted on the skin and supporting structure in the aircraft`s right main wheel fairing. Inspection results and techniques developed to verify the aircraft`s structural integrity are discussed.

Moore, D.G.; Jones, C.R. [Sandia National Labs., Albuquerque, NM (United States). FAA Airworthiness Assurance NDI Validation Center; Mihelic, J.E.; Barnes, J.D. [Coast Guard Aircraft Repair and Supply Center, Elizabeth City, NC (United States)

1998-08-01T23:59:59.000Z

155

Evaluation of Body Sensor Network Platforms: A Design Space and Benchmarking Analysis  

E-Print Network [OSTI]

and human motion analysis [17]. As Body Sensor Networks (BSNs) move from the research stage towards a widely such as SPSW (Samples Processed per Second per Watt) and EPC (Ex- pected Power Consumption). To measure

Poovendran, Radha

156

E-Print Network 3.0 - assist aircraft power Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

analyze the performance of earlier generation... feedback testing, closes each aircraft's control loop inside of the aFAST scheduling algorithm. Validation... of trajectory...

157

E-Print Network 3.0 - aircraft by size Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the size of the bank of aircraft does not significantly impact the effectiveness of the scheduling... by allowing airlines to have greater control over their ... Source: NASA -...

158

E-Print Network 3.0 - aircraft by motive power Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

analyze the performance of earlier generation... feedback testing, closes each aircraft's control loop inside of the aFAST scheduling algorithm. Validation... of trajectory...

159

E-Print Network 3.0 - aircraft maintenance planning Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(CAP) research and development program, NASA... by allowing airlines to have greater control over their individual arrival banks of aircraft. NASA... . This paper introduces a...

160

E-Print Network 3.0 - aircraft transportation system Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

from approximately 5 to 20 aircraft. Condition one consisted solely of this ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and...

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

E-Print Network 3.0 - aircraft overflight study Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

23 EXPANDING THE USE OF TIME-BASED METERING: MULTI-CENTER TRAFFIC MANAGEMENT ADVISOR Summary: the Center, or for aircraft simply overflying the Center. Moreover,...

162

E-Print Network 3.0 - aircraft maintenance equipment Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

stream of aircraft Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 35 Disruption Management in the Airline Industry...

163

E-Print Network 3.0 - aircraft turbine disk Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2 Intelligent Andrej Horvat, David Hartwanger Summary: principles as an aircraft Wind turbines fall into two main categories, those that depend upon aerodynamic... flow turbines...

164

E-Print Network 3.0 - aircraft carriers proposed Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Date: April 8, 2008 POC: Dave Lopez, MA-30 Summary: Designated Cat 1 Carrier 159 Bonneville Power Administration Aircraft Services United States DOE... Member Airline 288...

165

E-Print Network 3.0 - aircraft gates Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

9 Airspace Management Decision Tool Validating the Behavior and Structure of Software Design Summary: or to take off). 4. The airport owns two taxiways. An aircraft may...

166

DETERMINING EMPLOYEE EXPOSURE TO ETHYLENE GLYCOL WHILE PERFORMING MAINTENANCE ON AN AIRCRAFT DEICING FLUID COLLECTION SYSTEM.  

E-Print Network [OSTI]

??Air monitoring was performed on an aircraft deicing fluid collection system at the Cincinnati/Northern Kentucky International Airport (CNKIA). The goal of the study was to… (more)

CHAPMAN, DONALD RIVERS

2007-01-01T23:59:59.000Z

167

E-Print Network 3.0 - aircraft emissions simulation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Institute of Technology (MIT) Collection: Engineering 49 Inverting for emissions of carbon monoxide from Asia using aircraft observations over the western Pacific Summary:...

168

E-Print Network 3.0 - aircraft carrier program Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of aircraft. NASA Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 4 AIAA 2008-7835 Selection of a Carrier...

169

E-Print Network 3.0 - aging aircraft ndi Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

) to detect and classify flaws in aging aircraft. Our underlying concept is to use mobile robots, automated... characteristic of all these problems is illustrated explicitly...

170

E-Print Network 3.0 - aircraft system uas Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

energy Summary: Ltd. All rights reserved. 1. Introduction The development of new energy systems for aircraft... heat exchanger effectiveness group, Eq. (17) ations that would...

171

E-Print Network 3.0 - aircraft composite inspections Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

The First Joint DoDFAANASA Conference on Aging Aircraft 1997 July 8-10 Ogden UT Remote and Automated Inspection: Status and Prospects Summary: automated) inspection of...

172

E-Print Network 3.0 - aircraft vortex spacing Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Energy Storage, Conversion and Utilization 17 Proceedings of FEDSM 98 1998 ASME Fluids Engineering Division Summer Meeting Summary: relevance to the problem of aircraft...

173

E-Print Network 3.0 - aircraft wake vortex Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

University Collection: Chemistry ; Engineering 29 Proceedings of FEDSM 98 1998 ASME Fluids Engineering Division Summer Meeting Summary: relevance to the problem of aircraft...

174

Development of flight instrumentation and analysis of an aircraft's lateral response to a discrete two-dimensional vertical gust  

E-Print Network [OSTI]

of the requirement for the degree of MASTER OF SCI~?E May 1973 Major Subject, : Aerospace Engineering D~PK~3lT OF FLIGHT INSTRUMENTATION AND ANALYSIS OF AN AIRCRAFT~S LAIL RESPONSE TO A DISCR TE TN'OWINENSIONAL V&TICAL GUST A Thesis RUSSsLL LANE MASK... DeHavilland DHC 2 'Beaver' STOL aircraft. This is a single engined, high-wing aircraft of all metal construction, Fig. 1. Table 1 pro- vides some quantitative data relating to this aircraft. With the emphasis of this paper directed to the aircraft...

Mask, Russell Lane

1973-01-01T23:59:59.000Z

175

Taxiway Aircraft Traffic Scheduling: A Model and Solution Algorithms  

E-Print Network [OSTI]

can be applied to taxi planning problems. B. Taxi Planning Problem There exist differences between the TPP a nd VRP problems. For the TPP problem, the aircraft does not need to deliver goods to each node it visits. The TPP can be classified... set to be 200 meters. 26, 28, 30 The minimum separation distance can also be replaced by a minimum separation time, 29 in which case the speed does not need to be used any more. Another way 28, 31 is to replace the minimum separation constraint...

Tian, Chunyu

2012-10-19T23:59:59.000Z

176

Property Rights, Progress, and the Aircraft Patent Agreement  

E-Print Network [OSTI]

. COOPERATIVE MODIFICATION OF PATENT RIGHTS Assuming that the monopoly explanation is unsatisfactory, the aircraft patent agreement poses three puzzles: 1. Why would a group of manufacturers, some of whom own patents and some of whom may not, agree to share... Naturally, a firm for which inequality (2) does not hold because the royalties it can command are large can be induced to join with a side payment. This probably explains the payments to the Wright and Curtiss patents. However, if members of the agreement...

Bittlingmayer, George

1988-04-01T23:59:59.000Z

177

Aircraft Integration and Flight Testing of 4STAR  

SciTech Connect (OSTI)

Under funding from the U.S. Dept. of Energy, in conjunction with a funded NASA 2008 ROSES proposal, with internal support from Battelle Pacific Northwest Division (PNWD), and in collaboration with NASA Ames Research Center, we successfully integrated the Spectrometer for Sky-Scanning, Sun-Tracking Atmospheric Research (4STAR-Air) instrument for flight operation aboard Battelle’s G-1 aircraft and conducted a series of airborne and ground-based intensive measurement campaigns (hereafter referred to as “intensives”) for the purpose of maturing the initial 4STAR-Ground prototype to a flight-ready science-ready configuration.

Flynn, CJ; Kassianov, E; Russell, P; Redemann, J; Dunagan, S; Holben, B

2012-10-12T23:59:59.000Z

178

Development of an aerostatic pocket damper for aircraft engines  

E-Print Network [OSTI]

119 133 VITA 136 LIST OF FIGURES Page Fig. 1 Fig, 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 9 Fig. 10 Fig. 11 Fig. 12 Fig. 13 Fig. 14 Fig. 15 Fig. 16 Fig. 17 Fig. 18 Fig. 19 Fig. 20 Fig. 21 Fig. 22 Fig. 23 Fig. 24... 1 Table 2 Table 3 Table 4 Measured Support Stiffnesses Transfer Constants Final Rotor Unbalance Example Stiffness and Damping Coefficients 40 56 68 130 INTRODUCTION In the aircraft turbine engine field there is a constant effort...

Cardon, Bradley Paul

2012-06-07T23:59:59.000Z

179

Agency-Wide Screening | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Agency-Wide Screening Agency-Wide Screening Agency-Wide Screening October 16, 2013 - 4:36pm Addthis Federal agencies face energy-related requirements on new construction projects and major renovations. These Federal requirements range from reductions in fossil-fuel use to specifying the use of certain renewable energy technologies. As some agencies have already found out, not all sites or construction projects are created equal. Because many of the requirements are agency-wide, an effective and efficient way to meet these requirements is to consider and identify appropriate locations for these technologies across all agency land and building assets. FEMP can help Federal agencies conduct a renewable energy screening at all of its sites, or just at all of its upcoming construction project

180

West Wide Programmatic Environmental Impact Statement Record...  

Open Energy Info (EERE)

LibraryAdd to library Legal Document- OtherOther: West Wide Programmatic Environmental Impact Statement Record of Decision (BLM)Legal Published NA Year Signed or Took Effect...

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Energy Efficient Transmission Strategies for Body Sensor Networks with Energy Harvesting  

E-Print Network [OSTI]

Energy Efficient Transmission Strategies for Body Sensor Networks with Energy Harvesting Alireza for Body Sensor Networks (BSNs) with energy harvesting capabilities. It is assumed that two transmission tracking [4]. One major hurdle for the wide adoption of the BSN technology is the energy supply [11

Sikdar, Biplab

182

Can electricity from the human body replace batteries? by Anne-Marie Bullock for BBC News  

E-Print Network [OSTI]

Harnessing energy from the human body may only generate small amounts of electricity but scientists believeCan electricity from the human body replace batteries? by Anne-Marie Bullock for BBC News it has a wide range of potentially life-changing applications. Imagine clothes made with materials

South Bohemia, University of

183

Energy Efficient Transmission Strategies for Body Sensor Networks with Energy Harvesting  

E-Print Network [OSTI]

1 Energy Efficient Transmission Strategies for Body Sensor Networks with Energy Harvesting Alireza of developing energy efficient transmission strategies for Body Sensor Networks (BSNs) with energy harvesting [1]. A major hurdle for the wide adoption of BSN technology is the energy supply [2]. Current battery

Sikdar, Biplab

184

INFORMATION: Audit Report on The Office of Secure Transportation DC-9 Aircraft Refurbishment  

SciTech Connect (OSTI)

The National Nuclear Security Administration's (NNSA) Office of Secure Transportation (OST) maintains a fleet of seven aircraft to transport sensitive items, equipment and security personnel. Based on increasing requirements for transporting components and security personnel, OST decided to add a heavy transport aircraft to meet the Department's weapons surety and emergency response missions. In 2004, as a replacement following the sale of a portion of its fleet, OST acquired a DC-9 cargo aircraft that had been excessed by the U.S. military. Prior to integrating the DC-9 into its fleet, NNSA ordered a refurbishment of the aircraft. This refurbishment project was to permit the aircraft to be certified to civil air standards so that it could transport passengers for site visits, training and other travel. The NNSA Service Center (Service Center) awarded a contract for the refurbishment of the aircraft in December 2004. In recent years, the Office of Inspector General has addressed a number of issues relating to the Department's aircraft management activities and services. As part of our ongoing review process and because of the national security importance of its fleet of aircraft, we conducted this review to determine whether OST had an effective and efficient aviation management program.

None

2009-05-01T23:59:59.000Z

185

Evaluation of transient agility metrics through unmanned simulation of the X-31 post-stall aircraft  

E-Print Network [OSTI]

Development of post-stall capable aircraft has enhanced the research of agility, the ability of an aircraft to quickly and precisely change from its present state to a desired new state, and its measurement. Controlled high angle of attack (AOA...

Fischer, Shiloh Douglas

1996-01-01T23:59:59.000Z

186

Lyapunov-Based Exponential Tracking Control of a Hypersonic Aircraft with Aerothermoelastic Effects  

E-Print Network [OSTI]

Lyapunov-Based Exponential Tracking Control of a Hypersonic Aircraft with Aerothermoelastic Effects, Florida 32611-6250 DOI: 10.2514/1.46785 Hypersonic flight conditions produce temperature variations of bounded nonvanishing disturbances. Simulation results for a hypersonic aircraft are provided

Dixon, Warren

187

Fiber-optic communication links suitable for on-board use in modern aircraft  

E-Print Network [OSTI]

electromagnetic interference, which can affect the operational performance of these RF systems installed in aircraft. In most cases, due to bundled RF cables, electromagnetic interference in aircraft may interfere to increased susceptibility to electromagnetic interference (EMI)[8-9]. Considering other alternatives

Atiquzzaman, Mohammed

188

Design and Optimization of Future Aircraft for Assessing the Fuel Burn Trends of Commercial  

E-Print Network [OSTI]

aircraft R1 Maximum payload at maximum range SFC Engine specific fuel consumption Sref Reference area STADesign and Optimization of Future Aircraft for Assessing the Fuel Burn Trends of Commercial Francisco, CA 94104, U.S.A. Accurately predicting the fuel burn performance and CO2 emissions of future

Alonso, Juan J.

189

Adjoint-based method for supersonic aircraft design using equivalent area distributions  

E-Print Network [OSTI]

Adjoint-based method for supersonic aircraft design using equivalent area distributions Francisco for the design of supersonic aircraft that must match a target equivalent area distribution at constant lift of an adjoint solver for the equivalent area distribution, and the shape design process of a trijet supersonic

Alonso, Juan J.

190

Merging and Spacing of Heterogeneous Aircraft in Support of NextGen  

E-Print Network [OSTI]

large-scale tests of systems developed based on Automatic Dependent Surveillance-Broadcast (ADS-B) information. ADS-B, a crucial component of NextGen, relays highly accurate traffic information between and displays a recommended aircraft speed such that a safe distance is maintained with the leading aircraft

Egerstedt, Magnus

191

Reduction of Computational Complexity for Guidance of Unmanned Aircraft Through Strong Wind Fields  

E-Print Network [OSTI]

of three-dimensional wind data derived from radar measurements, it becomes extremely computationallyReduction of Computational Complexity for Guidance of Unmanned Aircraft Through Strong Wind Fields online guidance for unmanned aircraft in strong wind fields, a method for decomposing grid-based wind

Frew, Eric W.

192

Preliminary assessment of the impact of commercial aircraft on local air quality in the U.S.  

E-Print Network [OSTI]

This thesis examines the impact of aircraft emissions on local air quality by performing two analyses: an assessment of U.S. commercial aircraft contribution to county budgets of primary pollutants in nonattainment areas, ...

Ratliff, Gayle L. (Gayle Lois)

2007-01-01T23:59:59.000Z

193

A new research aircraft for the documentation of the impacts of pollution  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A new research aircraft for the documentation of the impacts of pollution A new research aircraft for the documentation of the impacts of pollution aerosols on clouds and precipitation Axisa, Duncan SOAR Collins, Don Texas A&M University Rosenfeld, Daniel Woodley, William Category: Radiation The importance of aircraft in situ measurements is well demonstrated by the progress that these data helped to achieve over the last two decades. Advances were quite spectacular over this period both in aircraft capabilities and in the instrumentation carried by them. Through the years new aircraft probe designs have evolved. These improvements provide an extended and overlapping size range of cloud particles and accumulation mode aerosol measurements. Improved electronics provide better resolution, particle sizing and accurate particle concentrations. Seeding Operations &

194

Atmospheric CO2 Concentrations from Aircraft for 1972-1981, CSIRO  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Trace Gases » CO2 » Concentrations from Aircraft for Atmospheric Trace Gases » CO2 » Concentrations from Aircraft for 1972-1981 Atmospheric CO2 Concentrations from Aircraft for 1972-1981, CSIRO Monitoring Program DOI: 10.3334/CDIAC/atg.ndp007 data Data (NDP-007) PDF PDF Investigators D. J. Beardsmore and G. I. Pearman Methods From 1972 through 1981, air samples were collected in glass flasks from aircraft at a variety of latitudes and altitudes over Australia, New Zealand, and Antarctica. The samples were analyzed for CO2 concentrations with nondispersive infrared gas analysis. The resulting data contain the sampling dates, type of aircraft, flight number, flask identification number, sampling time, geographic sector, distance in kilometers from the listed distance measuring equipment (DME) station, station number of the

195

Software Design 2 (Arduino Nano) BodyBody--RemotesRemotes  

E-Print Network [OSTI]

Software Design 2 (Arduino Nano) BodyBody--RemotesRemotes Gesture Based Appliance Control System the room Large wireless range, e.g. 100 m range with 1mW XBees Safely separate the Arduino from input ways to lower cost further Switch to Arduino Mini Light Develop our own wireless modules Jacob

Spletzer, John R.

196

Draft Site-Wide Environmental Impact Statement  

Broader source: Energy.gov (indexed) [DOE]

Site-Wide Environmental Impact Statement Site-Wide Environmental Impact Statement for the Y-12 National Security Complex October 2009 U.S. Department of Energy National Nuclear Security Administration Y-12 Site Office DOE/EIS-0387 COVER SHEET RESPONSIBLE AGENCY: United States (U.S.) Department of Energy (DOE), National Nuclear Security Administration (NNSA) TITLE: Draft Site-wide Environmental Impact Statement for the Y-12 National Security Complex (DOE/EIS-0387) (Draft Y-12 SWEIS) CONTACT: For further information on this SWEIS, For general information on the DOE contact: National Environmental Policy Act (NEPA) process, contact: Pam Gorman Carol Borgstrom, Director Y-12 SWEIS Document Manager Office of NEPA Policy and Compliance, GC-20 Y-12 Site Office U.S. Department of Energy

197

Absorption of solar radiation by the atmosphere as determined using satellite, aircraft, and surface data during the  

E-Print Network [OSTI]

Absorption of solar radiation by the atmosphere as determined using satellite, aircraft overcast conditions the aircraft measurements yield an absorptance of 0.32 0.03 for the layer between the aircraft (0.5­13 km), while the GOES 8 albedo versus surface transmittance analysis gives an absorptance

Dong, Xiquan

198

Wide field imaging of distant clusters  

E-Print Network [OSTI]

Wide field imaging is key to understanding the build-up of distant clusters and their galaxy population. By focusing on the so far unexplored outskirts of clusters, where infalling galaxies first hit the cluster potential and the hot intracluster medium, we can help separate cosmological field galaxy evolution from that driven by environment. I present a selection of recent advancements in this area, with particular emphasis on Hubble Space Telescope wide field imaging, for its superior capability to deliver galaxy morphologies and precise shear maps of distant clusters.

T. Treu

2004-08-05T23:59:59.000Z

199

Taylor Vortices in Wide Spherical Shells  

Science Journals Connector (OSTI)

It was believed that no Taylor vortices would exist in wide spherical shells with an aspect ratio of ?>0.24. In contrast, we have experimentally generated Taylor vortices in a relatively wide spherical shell with ?=0.33 using some special initial conditions. It is found that the Taylor vortices remain very stable in a range of the Reynolds number 467

M. Liu, C. Blohm, C. Egbers, P. Wulf, and H. J. Rath

1996-07-08T23:59:59.000Z

200

Orc Notation Structured Wide-Area Programming  

E-Print Network [OSTI]

Orc Notation Structured Wide-Area Programming Jayadev Misra Department of Computer Science University of Texas at Austin http://orc.csres.utexas.edu April 12, 2010 Rennes, France #12;Orc Notation hierarchical structure. #12;Orc Notation Orc · Goal: Internet scripting language. · Next: Component integration

Misra, Jayadev

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Structured Wide-Area Programming: Orc Calculus  

E-Print Network [OSTI]

Structured Wide-Area Programming: Orc Calculus Jayadev Misra Department of Computer Science University of Texas at Austin http://orc.csres.utexas.edu #12;Concurrency · ubiquitous. · difficult interactions. · Support hierarchical structure. #12;Orc · Initial Goal: Internet scripting language. · Next

Misra, Jayadev

202

Utilization of the world wide web  

Science Journals Connector (OSTI)

Two aspects of utilization of the World Wide Web are examined: (i) the communication of technical data through web cites that provide repositories of atomic and molecular data accessible through searchable databases; and (ii) the communication about issues of mutual concern among data producers data compilers and evaluators and data users.

Peter Mohr; Gary Mallard; Uri Ralchenko; David Schultz

1998-01-01T23:59:59.000Z

203

Product Design in Enterprise Wide Optimization  

E-Print Network [OSTI]

Product Design in Enterprise Wide Optimization Paul Arch, Michel Berghmans, Hany Farag NOVA · Simulation tools ­ Polymers/Plus ­ process modeling ­ Predici ­ reactor modeling ­ Gap analysis of commercial + M Dn + P1 Termination by combination Pn + Pm Dn+m Reactor model modified to resemble additional

Grossmann, Ignacio E.

204

Conceptual design of an aircraft automated coating removal system  

SciTech Connect (OSTI)

Paint stripping of the U.S. Air Force`s large transport aircrafts is currently a labor-intensive, manual process. Significant reductions in costs, personnel and turnaround time can be accomplished by the judicious use of automation in some process tasks. This paper presents the conceptual design of a coating removal systems for the tail surfaces of the C-5 plane. Emphasis is placed on the technology selection to optimize human-automation synergy with respect to overall costs, throughput, quality, safety, and reliability. Trade- offs between field-proven vs. research-requiring technologies, and between expected gain vs. cost and complexity, have led to a conceptual design which is semi-autonomous (relying on the human for task specification and disturbance handling) yet incorporates sensor- based automation (for sweep path generation and tracking, surface following, stripping quality control and tape/breach handling).

Baker, J.E.; Draper, J.V.; Pin, F.G.; Primm, A.H.; Shekhar, S.

1996-05-01T23:59:59.000Z

205

Health Monitoring for the Electrical Network of More Electric Aircraft  

Science Journals Connector (OSTI)

In this paper a health monitoring problem for the electrical network of more electric aircraft is addressed. To undertake the health monitoring task the multi?model detection technique is applied. Multi?model based approach associates to each health status a corresponding linear time invariant model which is derived by adjusting appropriately the non?faulty system model to a particular fault situation. The original health monitoring problem can be therefore formulated as a model detection problem. Besides the introduction of the theoretical preliminary of multi?model based approach the computer?aided design process right?sized modelling and realtime simulation based validation for residual generator with Dymola and Matlab are also discussed. Health monitoring for an input filter of an DC motor drive serves as an application case to illustrate the proposed scheme. The designed residual generators are validated on the original nonlinear system with time?domain simulation.

Yang Ji; Johann Bals

2010-01-01T23:59:59.000Z

206

A New Design Concept for 2-Stroke Aircraft Diesel Engines  

Science Journals Connector (OSTI)

Abstract High power density, low weight, compact dimensions, high efficiency as well as reliability are the key factors in designing and dimensioning piston engines for General Aviation and Unmanned Aerial Vehicle (UAV) power plants. Despite of new available technologies, conventional solutions are still struggling to fulfill simultaneously all those requirements. The paper explores the application of a new design of 2-Stroke externally scavenged engines to aircraft. The new concept basically consists in the use of a patented rotary valve for controlling the flow through a set of inlet ports, enabling supercharging and the achievement of extremely high power densities compared to conventional solutions. The scavenging is realized by using an external pump, made up of a further cylinder, whose piston is connected to the same crankshaft. The piston pump allows the crankcase to be used as a conventional oil sump, and greatly improves the crankshaft balance. No poppet valves or camshafts need to be installed, since the flow is driven by piston-controlled ports and by two sets of reed valves. The engine can adopt two types of combustion system: Gasoline Direct Injection (GDI) for SI operations, and Direct Injection Common Rail for Diesel cycle. The paper is focused on the last version, since it can run on standard aircraft fuel. The Diesel engine has three cylinders and three piston pumps, for a total displacement of 1.5 liter The engine is turbocharged and inter-cooled, in order to reach a power target, at sea level, of 150 kW@4000 rpm. Another fundamental target is the minimum power of 100 kW, at the altitude of 20,000 feet.The paper reviews the design of the engine and presents the numerical prediction of the key performance parameters.

Giuseppe Cantore; Enrico Mattarelli; Carlo Alberto Rinaldini

2014-01-01T23:59:59.000Z

207

N-Body Simulations on GPUs  

E-Print Network [OSTI]

Commercial graphics processors (GPUs) have high compute capacity at very low cost, which makes them attractive for general purpose scientific computing. In this paper we show how graphics processors can be used for N-body simulations to obtain improvements in performance over current generation CPUs. We have developed a highly optimized algorithm for performing the O(N^2) force calculations that constitute the major part of stellar and molecular dynamics simulations. In some of the calculations, we achieve sustained performance of nearly 100 GFlops on an ATI X1900XTX. The performance on GPUs is comparable to specialized processors such as GRAPE-6A and MDGRAPE-3, but at a fraction of the cost. Furthermore, the wide availability of GPUs has significant implications for cluster computing and distributed computing efforts like Folding@Home.

Elsen, Erich; Houston, Mike; Pande, Vijay; Hanrahan, Pat; Darve, Eric

2007-01-01T23:59:59.000Z

208

Proximal bodies in hypersonic flow  

SciTech Connect (OSTI)

Hypersonic flows involving two or more bodies travelling in close proximity to one another are encountered in several important situations, both natural and man-made. The present work seeks to investigate one aspect of the resulting flow problem by exploring the forces experienced by a secondary body when it is within the domain of influence of a primary body travelling at hypersonic speeds. An analytical methodology based on the blast wave analogy is developed and used to predict the secondary force coefficients for simple geometries in both two and three dimensions. When the secondary body is entirely inside the primary shocked region, the nature of the lateral force coefficient is found to depend strongly on the relative size of the two bodies. For two spheres, the methodology predicts that the secondary body will experience an exclusively attractive lateral force if the secondary diameter is larger than one-sixth the primary diameter. The analytical results are compared with those from numerical simulations and reasonable agreement is observed if an appropriate normalization for the lateral displacement is used. Results from a series of experiments in the T5 hypervelocity shock tunnel are also presented and compared with perfect-gas numerical simulations, with good agreement. A new force-measurement technique for short-duration hypersonic facilities, enabling the experimental simulation of the proximal bodies problem, is described. This technique provides two independent means of measurement, and the agreement observed between the two gives a further degree of confidence in the results obtained.

Deiterding, Ralf [ORNL; Laurence, Stuart J [California Institute of Technology, Pasadena; Hornung, Hans G [California Institute of Technology, Pasadena

2007-01-01T23:59:59.000Z

209

Bodies of information : reinventing bodies and practice in medical education  

E-Print Network [OSTI]

This dissertation recounts the development of graphic models of human bodies and virtual reality simulators for teaching anatomy and surgery to medical students, residents, and physicians. It considers how researchers from ...

Prentice, Rachel

2004-01-01T23:59:59.000Z

210

Crack detection on HC-130H aircraft using low frequency eddy current  

SciTech Connect (OSTI)

An eddy current inspection method was developed at the Federal Aviation Administration`s Airworthiness Assurance NDI Validation Center (AANC) to easily and rapidly detect subsurface fatigue cracks in the wheel well fairing on the US Coast Guard (USCG) HC-130H aircraft caused by fatigue. The inspection procedure locates cracks as small as 10.2 millimeters in length at 2.54 mm below the skin surface at raised fastener sites. The test procedure developed baseline three USCG aircraft. Inspection results on the three aircraft reveals good correlation with results made during subsequent structural disassembly.

Moore, D.G. [Sandia National Labs., Albuquerque, NM (United States); Mihelic, J.E.; Barnes, J.D. [Coast Guard, Elizabeth City, NC (United States). Aircraft Repair and Supply Center

1998-02-01T23:59:59.000Z

211

DFAS Wide-Area Workflow Issues  

Broader source: Energy.gov (indexed) [DOE]

DFAS Wide-Area Workflow DFAS Wide-Area Workflow Issues Mark Shvartzman Sr. Project Manager, CEM, CEA Southern California Edison Presented at the Spring FUPWG Meeting April 20, 2011 What We Are Going to Discuss * Review Delivery Order or Task Order for accounting lines information. * Contact Contracting Officer or Contracting specialist and request Pay DoDAAC and Ext. information * Create Payment Log by ACRN * Start creating Invoice How the WAWF works and how to navigate through: 2 CONTRACT N68711-03-G-4019 DO#0028 Pay Records Bill by CLIN Award $ by CLIN Billed To Date Invoice number Pay Total Balance by CLIN 7500009733 $330,899.11 CLIN 0001AA 674,220.00 674,220.00 7500009733 7500012596 674,220.00 0.00 7500012596 $641,344.69 CLIN 0001AB 325,780.00 298023.8 27,756.20 7500012596 7500015079 325,780.00

212

Structural Diagnostics of CFRP Composite Aircraft Components by Ultrasonic Guided Waves and Built-In Piezoelectric Transducers  

SciTech Connect (OSTI)

To monitor in-flight damage and reduce life-cycle costs associated with CFRP composite aircraft, an autonomous built-in structural health monitoring (SHM) system is preferred over conventional maintenance routines and schedules. This thesis investigates the use of ultrasonic guided waves and piezoelectric transducers for the identification and localization of damage/defects occurring within critical components of CFRP composite aircraft wings, mainly the wing skin-to-spar joints. The guided wave approach for structural diagnostics was demonstrated by the dual application of active and passive monitoring techniques. For active interrogation, the guided wave propagation problem was initially studied numerically by a semi-analytical finite element method, which accounts for viscoelastic damping, in order to identify ideal mode-frequency combinations sensitive to damage occurring within CFRP bonded joints. Active guided wave tests across three representative wing skin-to-spar joints at ambient temperature were then conducted using attached Macro Fiber Composite (MFC) transducers. Results from these experiments demonstrate the importance of intelligent feature extraction for improving the sensitivity to damage. To address the widely neglected effects of temperature on guided wave base damage identification, analytical and experimental analyses were performed to characterize the influence of temperature on guided wave signal features. In addition, statistically-robust detection of simulated damage in a CFRP bonded joint was successfully achieved under changing temperature conditions through a dimensionally-low, multivariate statistical outlier analysis. The response of piezoceramic patches and MFC transducers to ultrasonic Rayleigh and Lamb wave fields was analytically derived and experimentally validated. This theory is useful for designing sensors which possess optimal sensitivity toward a given mode-frequency combination or for predicting the frequency dependent directivity patterns in a transducer's response. Based upon this theory, a novel approach was developed for passive damage and impact location in anisotropic or geometrically complex systems. The detection and location of simulated ''active'' damage or impacts was experimentally demonstrated on a scaled CFRP honeycomb sandwich wing skin using this technique.

Howard M. Matt

2007-02-15T23:59:59.000Z

213

Fuel Cell Technologies Office: DOD-DOE Aircraft Petroleum Use Reduction  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DOD-DOE Aircraft Petroleum Use Reduction Workshop DOD-DOE Aircraft Petroleum Use Reduction Workshop The U.S. Department of Energy's (DOE) Fuel Cell Technologies Office and the U.S. Department of Defense (DOD) held a workshop on September 30, 2010, in Washington, DC, to discuss the potential for fuel cells to reduce aircraft petroleum use. Workshop objectives were to discuss collaboration across DOD and DOE in keeping with the DOD-DOE Memorandum of Understanding (MOU), to motivate RD&D for auxiliary power unit (APU) applications and identify R&D challenges, and to identify next steps and potential collaboration opportunities. Workshop Agenda Aircraft Petroleum Use Reduction Workshop Agenda Workshop Proceedings Report of the DOD-DOE Workshop on Fuel Cells in Aviation: Workshop Summary and Action Plan

214

Cost-benefit analysis of aircraft design for environment using a fleet perspective and real options  

E-Print Network [OSTI]

Traditional multidisciplinary design optimization (MDO) approaches do not examine the costs associated with damage due to environmental factors and are usually implemented to examine one aircraft. The Environmental Design ...

Hynes, Christopher Dennis

2005-01-01T23:59:59.000Z

215

Design of aircraft noise abatement approach procedures for near-term implementation  

E-Print Network [OSTI]

Advanced aircraft noise abatement approach procedures -- characterized by decelerating, continuous descent approaches using idle thrust, and enabled by flight guidance technologies such as GPS and FMS -- have been shown ...

Ho, Nhut Tan, 1974-

2005-01-01T23:59:59.000Z

216

Experimental study of rotordynamic coefficients of squeeze film dampers of an aircraft gas turbine engine  

E-Print Network [OSTI]

The rotordynamic coefficients of squeeze film dampers of an aircraft gas turbine engine were investigated experimentally. Rotordynamic model(XLROTOR) for Gas Generator and Power Turbine were constructed. The XLROTOR response plots with changing...

Na, Uhn Joo

2012-06-07T23:59:59.000Z

217

Pilot study: PAH fingerprints of aircraft exhaust in comparison with diesel engine exhaust  

Science Journals Connector (OSTI)

...In the course of a preliminary investigation the PAH fingerprints from diesel engines were compared with those from aircraft ... do not vary significantly. However, in turbine exhaust gas p-quaterphenyl was fo...

J. Krahl; H. Seidel; H.-E. Jeberien…

1998-03-01T23:59:59.000Z

218

Strategy for reducing the length and variability of aircraft lead time  

E-Print Network [OSTI]

Helicopter manufacturers typically build each aircraft to order, and the lead time for make or buy parts and assemblies can be several months or more. The manufacturers generally have a backlog of orders at any given time, ...

Bielat, Brendon (Brendon Michael)

2010-01-01T23:59:59.000Z

219

Design of multifunctional paired robots engaged across a thin plate for aircraft manufacturing and maintenance  

E-Print Network [OSTI]

The aircraft industry lacks an automated system for wing box manufacturing and maintenance. Currently workers assemble and inspect thousands of fasteners in the wing structure by hand. This manufacturing process consumes ...

Karasic, Geoffrey Ian

2011-01-01T23:59:59.000Z

220

The evolution of U.S. commercial domestic aircraft operations from 1991 to 2010  

E-Print Network [OSTI]

The main objective of this thesis is to explore the evolution of U.S. commercial domestic aircraft operations from 1991 to 2010 and describe the implications for future U.S. commercial domestic fleets. Using data collected ...

Wulz, Alexander Andrew

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

E-Print Network 3.0 - aircraft composite materials Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Flares Summary: are burn-in-place type flares containing a combination of AgI and CaCl2 material. The Cessna 340 aircraft... with time. 7 12;Figure 5: Composite Reflectivity...

222

E-Print Network 3.0 - aircraft by ownership Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

TOOL FOR EN ROUTE CONTROLLERS1 Heinz Erzberger2 Summary: ownership of them, the maximum number on the List for any sector will seldom exceed 2-3 aircraft in a 20... the...

223

E-Print Network 3.0 - aircraft refueling Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

61 Proceedings of the 2005 Winter Simulation Conference M. E. Kuhl, N. M. Steiger, F. B. Armstrong, and J. A. Joines, eds. Summary: aircraft has its own range before needing to...

224

Development and Implementation of a Statistical Risk Assessment Method for New Aircraft Performance at XYZ Corporation  

E-Print Network [OSTI]

At XYZ Corporation (XYZ), the standard method of creating aircraft performance guarantees does not incorporate engineering risk or uncertainty. Since performance guarantees are a contractual agreement to the customer, the customer is not obligated...

Schroeder, Christopher R.

2009-12-18T23:59:59.000Z

225

THEORETICAL MODELING AND COMPUTATIONAL SIMULATION OF ROBUST CONTROL FOR MARS AIRCRAFT  

E-Print Network [OSTI]

The focus of this dissertation is the development of control system design algorithms for autonomous operation of an aircraft in the Martian atmosphere. This research will show theoretical modeling and computational simulation of robust control...

Oh, Seyool

2014-05-31T23:59:59.000Z

226

Development and assessment of a soot emissions model for aircraft gas turbine engines  

E-Print Network [OSTI]

Assessing candidate policies designed to address the impact of aviation on the environment requires a simplified method to estimate pollutant emissions for current and future aircraft gas turbine engines under different ...

Martini, Bastien

2008-01-01T23:59:59.000Z

227

Application of the calculus of variations in determining optimum flight profiles for commercial short haul aircraft  

E-Print Network [OSTI]

The method of steepest descent of the calculus of variations is used to determine the optimal flight profile of a hypothetical tilt wing aircraft travelling a distance of 50 miles. Direct operating cost, (as derived from ...

Gallant, Robert Alfred

1966-01-01T23:59:59.000Z

228

E-Print Network 3.0 - aircraft shield test reactor Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

shield test reactor Search Powered by Explorit Topic List Advanced Search Sample search results for: aircraft shield test reactor Page: << < 1 2 3 4 5 > >> 1 A' Brief. History of...

229

A solution to the inherent list on Nimitz class aircraft carriers  

E-Print Network [OSTI]

Nimitz class aircraft carriers possess an inherent list to starboard that their list control systems (LCS) are typically unable to correct while under Combat Load Conditions. As a result, it has become necessary to use ...

Wolfson, Dianna

2004-01-01T23:59:59.000Z

230

Determining appropriate levels of robotic automation in commercial aircraft nacelle assembly  

E-Print Network [OSTI]

This thesis examines the application of reconfigurable industrial robotics in the assembly of the engine nacelle inlet for a commercial aircraft. In addition to addressing the achievable level of automation, this thesis ...

Durham, Bryce J. (Bryce James)

2014-01-01T23:59:59.000Z

231

Thermoelectric Energy Harvesting Using Phase Change Materials (PCMs) in High Temperature Environments in Aircraft  

Science Journals Connector (OSTI)

Wireless, energy-autonomous structural health-monitoring systems in aircraft have the potential of reducing total maintenance costs. Thermoelectric energy harvesting, which seems the best choice for creating t...

A. Elefsiniotis; Th. Becker; U. Schmid

2014-06-01T23:59:59.000Z

232

E-Print Network 3.0 - aircraft composite doublers Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

will be the ER-2, a civilian version of the Air Force's U2-s recon- naissance aircraft Source: Goddard Space Flight Center, NASA - Climate and Radiation Branch Collection:...

233

A method of evaluating the performance deterioration of aircraft gas-turbines  

E-Print Network [OSTI]

A METHOD OF EVALUATING THE PERFORMANCE DETERIORATION OF AIRCRAFT GAS-TURBINES A Thesis by V. SUBRAMANIAN Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... May 1978 Major Subject: Mechanical Engineering A METHOD OF EVALUATING THE PERFORMANCE DETERIORATION OF AIRCRAFT GAS-TURBINES A Thesis by V. SUBRAMANIAN Approved as to style and content by: Charrman o Commztt (Head o D pa ment Sg D~ Member...

Subramanian, V

2012-06-07T23:59:59.000Z

234

Effects of approach angle on the handling characteristics of light aircraft  

E-Print Network [OSTI]

with larger engines, Smproved airframe construction, and advanced geometry with high-1Sft wings compatible with short takc-off and landing (STOL) op- erations. The latter aspect of light aircraft utili ation has brouPht attention to the difficulties... characteristics are included in table 2 on page 26. This airplane is a typical low wing, medium performanci, single engine airplane and is characteristic of a general aviation aircraft (Beechcraft Bonanza) except for cabin configuration. Instrumenta- tion...

Burke, James Allen

1971-01-01T23:59:59.000Z

235

Control authority of unconventional control surface deflections on a fighter aircraft  

E-Print Network [OSTI]

OF SCIENCE May 1985 Major Subject: Aerospace Engineering CONTROL AUTHORITY OF UNCONVENTIONAL CONTROL SURFACE DEFLECTIONS ON A FIGHTER AIRCRAFT A Thesis by LLOYD JOE STOUT Approved as to style and content by: Donald T. Ward (Chairman of Committee...CONTROL AUTHORITY OF UNCONVENTIONAL CONTROL SURFACE DEFLECTIONS ON A FIGHTER AIRCRAFT A Thesis LLOYD JOE STOUT Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER...

Stout, Lloyd Joe

1985-01-01T23:59:59.000Z

236

A network approach for identifying minimum-cost aircraft routing and fuel-allocating decisions  

E-Print Network [OSTI]

for the degree of MASTER OF SCIENCE December 1988 Major Subject: Industrial Engineering A NETWORK APPROACH FOR IDENTIFYING MINIMUM-COST AIRCRAFT ROUTING AJVD FUEL-ALLOCATING DECISIONS A Thesis by NADER MAHMOUD KABBAVI Approved as to style and content by...A NETWORK APPROACH FOR IDENTIFYING MINIMUM-COST AIRCRAFT ROUTING AND FUEL-ALLOCATING DECISIONS A Thesis by NADER MAHMOUD KABBANI Submitted to the OIIice of Graduate Studies of Texas AkM University in partial fulfillment of the requirement...

Kabbani, Nader Mahmoud

1988-01-01T23:59:59.000Z

237

Aircraft Emissions Deposited in the Stratosphere and Within the Arctic Polar Vortex. Final report  

SciTech Connect (OSTI)

This report describes an analysis of the quantity of emissions (water vapor, NO(x)) projected to be deposited directly within the Arctic polar vortex by projected fleets of Mach 2.4 high speed civil transports (HSCT`s). It also evaluates the amount of emissions from subsonic aircraft which are emitted into the lower stratosphere using aircraft emission inventories developed earlier for May 1990 as representative of the annual average.

Baughcum, S.L.

1996-04-01T23:59:59.000Z

238

Wide Bandgap Semiconductors for Clean Energy Workshop  

Broader source: Energy.gov [DOE]

A workshop on Wide Bandgap (WBG) Semiconductors for Clean Energy (held July 25, 2012, in Chicago, Illinois) brought together stakeholders from industry and academia to discuss the technical status of WBG semiconductors. The workshop also explored emerging WBG market applications in clean energy and barriers to the development and widespread commercial use of WBG semiconductors. Improving the quality and reliability of WBG semiconductors—and reducing their manufacturing costs—could accelerate their use in automotive, power electronics, solid-state lighting, and other clean energy applications.

239

Discontinuous Buckling of Wide Beams and Metabeams  

E-Print Network [OSTI]

We uncover how nonlinearities dramatically influence the buckling of elastic beams by means of experiments, simulations and theory. We show that sufficiently wide, ordinary elastic beams exhibit discontinuous buckling, an unstable form of buckling where the post-buckling stiffness is negative. We develop a 1D model that matches our data and identify nonlinearity as the main cause for negative stiffness. Finally, we create nonlinear metamaterials that allow us to rationally design the (negative) post-buckling stiffness of metabeams, independently of beam thickness, and demonstrate discontinuous buckling for metabeams as slender as 1% numerically and 5% experimentally.

Corentin Coulais; Johannes T. B. Overvelde; Luuk A. Lubbers; Katia Bertoldi; Martin van Hecke

2014-10-22T23:59:59.000Z

240

Data development technical support document for the aircraft crash risk analysis methodology (ACRAM) standard  

SciTech Connect (OSTI)

The Aircraft Crash Risk Analysis Methodology (ACRAM) Panel has been formed by the US Department of Energy Office of Defense Programs (DOE/DP) for the purpose of developing a standard methodology for determining the risk from aircraft crashes onto DOE ground facilities. In order to accomplish this goal, the ACRAM panel has been divided into four teams, the data development team, the model evaluation team, the structural analysis team, and the consequence team. Each team, consisting of at least one member of the ACRAM plus additional DOE and DOE contractor personnel, specializes in the development of the methodology assigned to that team. This report documents the work performed by the data development team and provides the technical basis for the data used by the ACRAM Standard for determining the aircraft crash frequency. This report should be used to provide the generic data needed to calculate the aircraft crash frequency into the facility under consideration as part of the process for determining the aircraft crash risk to ground facilities as given by the DOE Standard Aircraft Crash Risk Assessment Methodology (ACRAM). Some broad guidance is presented on how to obtain the needed site-specific and facility specific data but this data is not provided by this document.

Kimura, C.Y.; Glaser, R.E.; Mensing, R.W.; Lin, T.; Haley, T.A.; Barto, A.B.; Stutzke, M.A.

1996-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

EA-1422: Final Site-wide Environmental Assessment | Department...  

Broader source: Energy.gov (indexed) [DOE]

2: Final Site-wide Environmental Assessment EA-1422: Final Site-wide Environmental Assessment Sandia National Laboratories Sandia National Laboratories (SNL) is one of three...

242

Wide Bandgap Semiconductors for Clean Energy Workshop Agenda  

Energy Savers [EERE]

Wide Bandgap Semiconductors for Clean Energy Workshop Wednesday, July 25, 2012 Hilton Rosemont O'Hare, Chicago, IL Introduction Wide bandgap (WBG) semiconductors operate at...

243

Webinar: Opportunities for Wide Bandgap Semiconductor Power Electronic...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Opportunities for Wide Bandgap Semiconductor Power Electronics for Hydrogen and Fuel Cell Applications Webinar: Opportunities for Wide Bandgap Semiconductor Power Electronics for...

244

Webinar: Opportunities for Wide Bandgap Semiconductor Power Electronic...  

Broader source: Energy.gov (indexed) [DOE]

Webinar: Opportunities for Wide Bandgap Semiconductor Power Electronics for Hydrogen and Fuel Cell Applications Webinar: Opportunities for Wide Bandgap Semiconductor Power...

245

Commonwealth Aluminum: Manufacturer Conducts Plant-Wide Energy...  

Broader source: Energy.gov (indexed) [DOE]

Commonwealth Aluminum: Manufacturer Conducts Plant-Wide Energy Assessments at Two Aluminum Sheet Production Operations Commonwealth Aluminum: Manufacturer Conducts Plant-Wide...

246

EIS-0309: Final Site-Wide Environmental Impact Statement | Department...  

Energy Savers [EERE]

Final Site-Wide Environmental Impact Statement EIS-0309: Final Site-Wide Environmental Impact Statement The Department of Energy (DOE) limits electronic access to certain NEPA...

247

DOE Issues Final Site-Wide Environmental Impact Statement for...  

Broader source: Energy.gov (indexed) [DOE]

Issues Final Site-Wide Environmental Impact Statement for the Nevada National Security Site DOE Issues Final Site-Wide Environmental Impact Statement for the Nevada National...

248

EIS-0309: Draft Site-Wide Environmental Impact Statement | Department...  

Office of Environmental Management (EM)

Draft Site-Wide Environmental Impact Statement EIS-0309: Draft Site-Wide Environmental Impact Statement The Department of Energy (DOE) limits electronic access to certain NEPA...

249

EIS-0281: Final Site-Wide Environmental Impact Statement | Department...  

Broader source: Energy.gov (indexed) [DOE]

Final Site-Wide Environmental Impact Statement EIS-0281: Final Site-Wide Environmental Impact Statement Sandia National LaboratoriesNew Mexico DOE proposes to continue operating...

250

Fuel dispersal modeling for aircraft-runway impact scenarios  

SciTech Connect (OSTI)

A fuel dispersal model for C-141 transport accidents was developed for the Defense Nuclear Agency`s Fuel Fire Technology Base Program to support Weapon System Safety Assessments. The spectrum of accidents resulting from aircraft impact on a runway was divided into three fuel dispersal regimes: low, intermediate, and high-velocity impact. Sufficient data existed in the accident, crash test, and fuel-filled bomb literature to support development of a qualitative framework for dispersal models, but not quantitative models for all regimes. Therefore, a test series at intermediate scale was conducted to generate data on which to base the model for the high-velocity regime. Tests were conducted over an impact velocity range from 12 m/s to 91 m/s and angles of impact from 22.5{degrees} to 67.5{degrees}. Dependent variables were area covered by dispersed fuel, amount of mass in that area, and location of the area relative to the impact line. Test results showed that no liquid pooling occurred for impact velocities greater than 61 m/s, independent of the angle of impact. Some pooling did occur at lower velocities, but in no test was the liquid-layer thickness greater than 5.25 mm.

Tieszen, S.R.

1995-11-01T23:59:59.000Z

251

Wide band stepped frequency ground penetrating radar  

DOE Patents [OSTI]

A wide band ground penetrating radar system (10) embodying a method wherein a series of radio frequency signals (60) is produced by a single radio frequency source (16) and provided to a transmit antenna (26) for transmission to a target (54) and reflection therefrom to a receive antenna (28). A phase modulator (18) modulates those portion of the radio frequency signals (62) to be transmitted and the reflected modulated signal (62) is combined in a mixer (34) with the original radio frequency signal (60) to produce a resultant signal (53) which is demodulated to produce a series of direct current voltage signals (66) the envelope of which forms a cosine wave shaped plot (68) which is processed by a Fast Fourier Transform unit 44 into frequency domain data (70) wherein the position of a preponderant frequency is indicative of distance to the target (54) and magnitude is indicative of the signature of the target (54).

Bashforth, Michael B. (Buellton, CA); Gardner, Duane (Santa Maria, CA); Patrick, Douglas (Santa Maria, CA); Lewallen, Tricia A. (Ventura, CA); Nammath, Sharyn R. (Santa Barbara, CA); Painter, Kelly D. (Goleta, CA); Vadnais, Kenneth G. (Alexandria, VA)

1996-01-01T23:59:59.000Z

252

Plant Wide Assessment for SIFCO Industries, Inc.  

SciTech Connect (OSTI)

Sifco Industries carreid out a plant wide energy assessment under a collaborative program with the U.S. Department of Energy during October 2004 to September 2005. During the year, personnel from EIS, E3M, DPS, BuyCastings.Com, and Sifco plant facilities and maintenance personnel, as a team collected energy use, construction, process, equipment and operational information about the plant. Based on this information, the team identified 13 energy savings opportunities. Near term savings opportunities have a total potential savings of about $1,329,000 per year and a combined simple payback of about 11 months. Implementation of these recommendations would reduce CO2 emissions by about 16,000,000 pounds per year, which would reduce overall plant CO2 emissions by about 45%. These totals do not include another $830,000 per year in potential savings with an estimated 9-month payback, from converting the forging hammers from steam to compressed air.

Kelly Kissock, Arvind Thekdi et. al.

2005-07-06T23:59:59.000Z

253

Imaging spectrometer wide field catadioptric design  

DOE Patents [OSTI]

A wide field catadioptric imaging spectrometer with an immersive diffraction grating that compensates optical distortions. The catadioptric design has zero Petzval field curvature. The imaging spectrometer comprises an entrance slit for transmitting light, a system with a catadioptric lens and a dioptric lens for receiving the light and directing the light, an immersion grating, and a detector array. The entrance slit, the system for receiving the light, the immersion grating, and the detector array are positioned wherein the entrance slit transmits light to the system for receiving the light and the system for receiving the light directs the light to the immersion grating and the immersion grating receives the light and directs the light through the system for receiving the light to the detector array.

Chrisp; Michael P. (Danville, CA)

2008-08-19T23:59:59.000Z

254

Aircraft de-icer: Recycling can cut carbon emissions in half  

SciTech Connect (OSTI)

Flight-safety regulations in most countries require aircraft to be ice-free upon takeoff. In icy weather, this means that the aircraft usually must be de-iced (existing ice is removed) and sometimes anti-iced (to protect against ice-reformation). For both processes, aircraft typically are sprayed with an 'antifreeze' solution, consisting mainly of glycol diluted with water. This de/anti-icing creates an impact on the environment, of which environmental regulators have grown increasingly conscious. The US Environmental Protection Agency (EPA), for example, recently introduced stricter rules that require airports above minimum size to collect de-icing effluents and send them to wastewater treatment. De-icer collection and treatment is already done at most major airports, but a few have gone one step further: rather than putting the effluent to wastewater, they recycle it. This study examines the carbon savings that can be achieved by recycling de-icer. There are two key findings. One, recycling, as opposed to not recycling, cuts the footprint of aircraft de-icing by 40-50% - and even more, in regions where electricity-generation is cleaner. Two, recycling petrochemical-based de-icer generates a 15-30% lower footprint than using 'bio' de-icer without recycling. - Highlights: Black-Right-Pointing-Pointer Carbon footprint of aircraft de-icing can be measured. Black-Right-Pointing-Pointer Recycling aircraft de-icer cuts the footprint of aircraft de-icing by 40-50%. Black-Right-Pointing-Pointer Recycling 'fossil' de-icer is lower carbon than not recycling 'bio' de-icer.

Johnson, Eric P., E-mail: ejohnson@ecosite.co.uk

2012-01-15T23:59:59.000Z

255

Meissner's Mysterious Bodies Bernd Kawohl & Christof Weber  

E-Print Network [OSTI]

by plaster. Figure 1 appears to be the earliest drawing showing a nontrivial three-dimensional body of "the" Meissner body. The earliest printed photograph of a plaster Meissner body, the one de- scribed") in the Palais de la D´ecouverte in Paris (see #12;3 Figure 2: Plaster Model of Meissner body MV Figure 8

Kawohl, Bernd

256

A human body analysis system  

Science Journals Connector (OSTI)

This paper describes a system for human body analysis (segmentation, tracking, face/hands localisation, posture recognition) from a single view that is fast and completely automatic. The system first extracts low-level data and uses part of the data ...

Vincent Girondel; Laurent Bonnaud; Alice Caplier

2006-01-01T23:59:59.000Z

257

body  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

9 9 JULY 1997 Control of Nitrogen Oxide Emissions: Selective Catalytic Reduction (SCR) TOPICAL REPORT NUMBER 9 A report on a project conducted jointly under a cooperative agreement between: The U.S. Department of Energy and Southern Company Services, Inc. JULY 1997 Control of Nitrogen Oxide Emissions: Selective Catalytic Reduction (SCR) Cover image: Photo of SCR Project at Plant Crist. Preparation and printing of this document conforms to the general funding provisions of a cooperative agreement between Southern Company Services and the U.S. Department of Energy. The funding contribution of the industrial participant permitted inclusion of multicolored artwork and photographs at no additional expense to the U.S. Government. Control of Nitrogen Oxide Emissions: Selective Catalytic Reduction (SCR)

258

Thermal Cyclic Creep and Long-Term Strength of the Material of Aircraft Gas Turbine Blades after Operation  

Science Journals Connector (OSTI)

The remaining thermal cyclic creep and long-term strength life of the material of aircraft gas turbine blades after operation has been determined experimentally....

B. S. Karpinos; V. V. Samuleev; B. A. Lyashenko; E. V. Lais’ke…

2013-09-01T23:59:59.000Z

259

Essential Body of Knowledge (EBK) October 2011  

Broader source: Energy.gov (indexed) [DOE]

Essential Body of Knowledge (EBK) Essential Body of Knowledge (EBK) October 2011 1 U.S. DEPARTMENT OF ENERGY Essential Body of Knowledge (EBK) A Competency and Functional Framework For Cyber Security Workforce Development Office of the Chief Information Officer Office of the Associate CIO for Cyber Security October 2011 DOE Essential Body of Knowledge (EBK) October 2011 2 Table of Contents Executive Summary ...............................................................................................................4 DOE Essential Body of Knowledge (EBK) .........................................................................5 1.1 Data Security ..............................................................................................................6

260

Comparison of methodologies estimating emissions of aircraft pollutants, environmental impact assessment around airports  

SciTech Connect (OSTI)

Air transportation growth has increased continuously over the years. The rise in air transport activity has been accompanied by an increase in the amount of energy used to provide air transportation services. It is also assumed to increase environmental impacts, in particular pollutant emissions. Traditionally, the environmental impacts of atmospheric emissions from aircraft have been addressed in two separate ways; aircraft pollutant emissions occurring during the landing and take-off (LTO) phase (local pollutant emissions) which is the focus of this study, and the non-LTO phase (global/regional pollutant emissions). Aircraft pollutant emissions are an important source of pollution and directly or indirectly harmfully affect human health, ecosystems and cultural heritage. There are many methods to asses pollutant emissions used by various countries. However, using different and separate methodology will cause a variation in results, some lack of information and the use of certain methods will require justification and reliability that must be demonstrated and proven. In relation to this issue, this paper presents identification, comparison and reviews of some of the methodologies of aircraft pollutant assessment from the past, present and future expectations of some studies and projects focusing on emissions factors, fuel consumption, and uncertainty. This paper also provides reliable information on the impacts of aircraft pollutant emissions in short term and long term predictions.

Kurniawan, Jermanto S., E-mail: Jermanto.kurniawan@inrets.fr; Khardi, S., E-mail: Salah.khardi@inrets.f

2011-04-15T23:59:59.000Z

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Wide Area Security Region Final Report  

SciTech Connect (OSTI)

This report develops innovative and efficient methodologies and practical procedures to determine the wide-area security region of a power system, which take into consideration all types of system constraints including thermal, voltage, voltage stability, transient and potentially oscillatory stability limits in the system. The approach expands the idea of transmission system nomograms to a multidimensional case, involving multiple system limits and parameters such as transmission path constraints, zonal generation or load, etc., considered concurrently. The security region boundary is represented using its piecewise approximation with the help of linear inequalities (so called hyperplanes) in a multi-dimensional space, consisting of system parameters that are critical for security analyses. The goal of this approximation is to find a minimum set of hyperplanes that describe the boundary with a given accuracy. Methodologies are also developed to use the security hyperplanes, pre-calculated offline, to determine system security margins in real-time system operations, to identify weak elements in the system, and to calculate key contributing factors and sensitivities to determine the best system controls in real time and to assist in developing remedial actions and transmission system enhancements offline . A prototype program that automates the simulation procedures used to build the set of security hyperplanes has also been developed. The program makes it convenient to update the set of security hyperplanes necessitated by changes in system configurations. A prototype operational tool that uses the security hyperplanes to assess security margins and to calculate optimal control directions in real time has been built to demonstrate the project success. Numerical simulations have been conducted using the full-size Western Electricity Coordinating Council (WECC) system model, and they clearly demonstrated the feasibility and the effectiveness of the developed technology. Recommendations for the future work have also been formulated.

Makarov, Yuri V.; Lu, Shuai; Guo, Xinxin; Gronquist, James; Du, Pengwei; Nguyen, Tony B.; Burns, J. W.

2010-03-31T23:59:59.000Z

262

Note PC catalogue (Machine body)  

E-Print Network [OSTI]

Specifications Image Brand Model 009 lenovo X61s Core2Duo L7500 1.60GHz 4GB 160GB 12.1inch 1.42Kg Windows Remarks Specifications Image Brand Model 018 Panasonic CF-F8EWMCAC Core2Duo P9300 2.26GHz 2GB 250GB 14 (Machine body) Accessory LAN Wireless LAN PC PC Code Remarks Specifications Image Brand Model 027

Katsumoto, Shingo

263

Aerodyne Develops an Aircraft-Deployable Precision Aerosol Analyzer | U.S.  

Office of Science (SC) Website

Aerodyne Develops an Aircraft-Deployable Precision Aerosol Aerodyne Develops an Aircraft-Deployable Precision Aerosol Analyzer Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR) SBIR/STTR Home About Funding Opportunity Announcements (FOAs) Applicant and Awardee Resources Commercialization Assistance Other Resources Awards SBIR/STTR Highlights Reporting Fraud Contact Information Small Business Innovation Research and Small Business Technology Transfer U.S. Department of Energy SC-29/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-5707 F: (301) 903-5488 E: sbir-sttr@science.doe.gov More Information » January 2013 Aerodyne Develops an Aircraft-Deployable Precision Aerosol Analyzer Aerodyne Research Inc. develops an aerosol mass spectrometer (AMS) that fills a critical need for size-resolved, quantitative chemical composition

264

Electrical Generation for More-Electric Aircraft using Solid Oxide Fuel Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

XXXXX XXXXX Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Electrical Generation for More-Electric Aircraft using Solid Oxide Fuel Cells GA Whyatt LA Chick April 2012 PNNL-XXXXX Electrical Generation for More- Electric Aircraft using Solid Oxide Fuel Cells GA Whyatt LA Chick April 2012 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Pacific Northwest National Laboratory Richland, Washington 99352 iii Summary This report examines the potential for Solid-Oxide Fuel Cells (SOFC) to provide electrical generation on-board commercial aircraft. Unlike a turbine-based auxiliary power unit (APU) a solid oxide fuel cell power unit (SOFCPU) would be more efficient than using the main engine generators to generate

265

Aircraft Observations of Convective Systems in the Indian Ocean [EVS Event]  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Aircraft Observations of Convective Systems in the Indian Ocean Aircraft Observations of Convective Systems in the Indian Ocean August 23, 2013 Speaker: Bradley Nicholas Guy National Research Council Postdoctoral Fellow NOAA National Severe Storms Laboratory Date: Friday, August 23, 2013 Time: 11:00 a.m. Location: Argonne National Laboratory TCS Building 240 Room 4301 In the DYNAMO (Dynamics of the Madden-Julian Oscillation) field experiment, a large number of measurement platforms were deployed to study environmental and convective cloud system characteristics of the Madden-Julian Oscillation (MJO) initiation region in the Indian Ocean. A mobile platform, the NOAA P-3 instrumented aircraft, sampled intense convective cloud systems, along with the surrounding environment. This presentation will explore the characteristics of mesoscale convective

266

Modeling and analysis of aircraft non-linear components for harmonics analysis  

SciTech Connect (OSTI)

Modern commercial aircraft Electric Power Systems (EPS) include many nonlinear components which produce harmonics. The addition of all the current harmonics could result in a power system with unacceptable levels of voltage distortion. It is important to be able to predict the levels of voltage distortion at early program stages to correct any potential problems and avoid costly redesigns. In this paper the nature and sources of harmonic producing equipment are described. These sources of harmonics and their effect on aircraft power system operation are described. Models for various aircraft non-linear components are developed in this paper. These component models are used in a model of the Boeing 777 EPS which is used to calculate voltage harmonics for various airplane configurations and flight conditions. A description of this model and the models used for various components are given. Tests performed to validate these models are described. Comparison of experimental results with analytical model predictions are given.

Karimi, K.J. [Boeing Computer Services, Seattle, WA (United States); Voss, J. [Boeing Commercial Airplane Group, Seattle, WA (United States)

1995-12-31T23:59:59.000Z

267

An evaluation of total body electrical conductivity to estimate body composition of largemouth bass  

E-Print Network [OSTI]

Information about body composition of fish is important for the assessment and management of fish stocks. Measurement of total body electrical conductivity (TOBEC) recently has been used to estimate the body composition of several fish species in a...

Barziza, Daniel Eugene

2012-06-07T23:59:59.000Z

268

Titanium is hot, but can it stand the heat. [For jet turbines and hypersonic aircraft  

SciTech Connect (OSTI)

Titanium aluminides, a new class of intermetallics with ceramic-like properties, that could change the shape of future jet turbines and hypersonic aircraft, are described. These intermetallics are alloyed from two lightweight metals, as opposed to superalloys, the current compressor leaders, which are primarily nickel, cobalt, or iron. Thus, aluminides show immediate promise of much lower mass than superalloys. Metallurgists can alloy and thermochemically process Ti3Al, the most fully developed of the aluminides, to achieve 3-5 percent room-temperature ductility. Consideration is given to other titanium alloys that show promise for application in an engine or on the skin of a hypersonic aircraft.

Brown, A.S.

1991-06-01T23:59:59.000Z

269

Parallel calculation of sensitivity derivatives for aircraft design using automatic differentiation  

SciTech Connect (OSTI)

Realistic multidisciplinary design optimization (MDO) of advanced aircraft using state-of-the-art computers is an extremely challenging problem from both the physical modelling and computer science points of view. In order to produce an efficient aircraft design, many trade-offs must be made among the various physical design variables. Similarly, in order to produce an efficient design scheme, many trade-offs must be made among the various MDO implementation options. In this paper, we examine the effects of vectorization and coarse-grained parallelization on the SD calculation using a representative example taken from a transonic transport design problem.

Bischof, C.H.; Knauff, T.L. Jr. [Argonne National Lab., IL (United States); Green, L.L.; Haigler, K.J. [National Aeronautics and Space Administration, Hampton, VA (United States). Langley Research Center

1994-01-01T23:59:59.000Z

270

Garbage Collecting the World Wide Web Stephen M. Watt  

E-Print Network [OSTI]

Garbage Collecting the World Wide Web Stephen M. Watt Western University London, Ontario, Canada N6A 5B7 Stephen.Watt@uwo.ca Abstract The World Wide Web has grown over the past decade and a half from

Watt, Stephen M.

271

ECONOMIC IMPACTS OF A WIDE AREA RELEASE OF ANTHRAX  

E-Print Network [OSTI]

ECONOMIC IMPACTS OF A WIDE AREA RELEASE OF ANTHRAX May 2009 Prepared Regional Technology Center for Homeland Security Economic Impacts of a Wide Area Release of Anthrax KS .................................................................................................................................................. 1 Categories of Economic Impacts

272

Advanced applications in wide-area impedance sensing  

E-Print Network [OSTI]

In this thesis a wide-area impedance sensor used in hyperspectral imaging for a wide variety of applications is presented. Building on previous work, this sensor is decoupled from fluorescent lamps and thus is used to ...

George, Elizabeth C. (Elizabeth Christine)

2014-01-01T23:59:59.000Z

273

EA-1968: Final Site-Wide Environmental Assessment  

Broader source: Energy.gov [DOE]

National Renewable Energy Laboratory (NREL) South Table Mountain (STM) Campus Site-Wide Environmental Assessment, Golden, Colorado

274

EA-1914: Final Site-Wide Environmental Assessment  

Broader source: Energy.gov [DOE]

National Renewable Energy Laboratory (NREL) National Wind Technology Center (NWTC) Site-Wide Environmental Assessment, Golden, Colorado

275

Three-body decay of (6)Be  

E-Print Network [OSTI]

Three-body correlations for the ground-state decay of the lightest two-proton emitter (6)Be are studied both theoretically and experimentally. Theoretical studies are performed in a three-body hyperspherical-harmonics cluster model...

Grigorenko, L. V.; Wiser, T. D.; Mercurio, K.; Charity, R. J.; Shane, R.; Sobotka, L. G.; Elson, J. M.; Wuosmaa, A. H.; Banu, A.; McCleskey, M.; Trache, L.; Tribble, Robert E.; Zhukov, M. V.

2009-01-01T23:59:59.000Z

276

Body copy Arial 11pt black University of Birmingham opportunities for SMEs  

E-Print Network [OSTI]

Body copy ­ Arial 11pt black University of Birmingham opportunities for SMEs The University that of the individual employees; with the overall aim of improving long term profitability. Our services to SMEs internships and placements Student schemes cover a wide range of disciplines - technology, processing, finance

Birmingham, University of

277

Hierarchical Segmentation of Surfaces Embedded in for Auto-Body Painting  

E-Print Network [OSTI]

. INTRODUCTION AND PRIOR WORK Robots are widely used for spray-painting in the automotive industry. OwingHierarchical Segmentation of Surfaces Embedded in R3 for Auto-Body Painting Prasad N. Atkar Aaron components. Index Terms-- segmentation, automation, coverage, trajectory planning, spray painting. I

Choset, Howie

278

Defining a Stream Restoration Body of Knowledge as a Basis for National Certification  

E-Print Network [OSTI]

to improving ecosystem function and enhancing aquatic biodiversity (Wohl et al. 2005). Despite the abundanceForum Defining a Stream Restoration Body of Knowledge as a Basis for National Certification Sue L-7900.0000814 Introduction The practice of stream restoration has become widely accepted as an essential component

Curran, Joanna C.

279

Become an SEP Verification Body  

Broader source: Energy.gov [DOE]

Superior Energy Performance® (SEP™) establishes a high standard in energy management and performance, and SEP certification validates your commitment to energy efficiency by verifying your achieved energy performance improvement using an ANSI-ANAB Accredited Verification body. This third-party verification provides independent confirmation of energy performance achievements and commitment to managing energy use. Currently, SEP is the only national certification program offering this level of rigor and credibility to industrial facilities through accredited third-party verification of sustained energy performance improvements.

280

Abstract--In this paper, we investigate the potential of a self-powered gliding aircraft to remain aloft indefinitely. We focus  

E-Print Network [OSTI]

, 18015, USA. motive power for the aircraft is provided via solar energy generated in-flight. However flight, as well as trajectory strategies for solar power generation. Both the aircraft design and power generation problems are cast as non-linear optimization problems where the aircraft equations of motion

Spletzer, John R.

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Benefits of Site-wide NEPA Review | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Benefits of Site-wide NEPA Review Benefits of Site-wide NEPA Review Benefits of Site-wide NEPA Review The purpose of this guidance memorandum is to describe potential benefits of conducting a site-wide NEPA review (environmental impact statement or environmental assessment). I believe that this information will help program and field offices prepare their annual NEPA planning summaries and their overall NEPA compliance strategies. Site-wide reviews can aid the Department of Energy (DOE) in meeting its goals to streamline the NEPA process, to make that process more useful to decision makers and the public, and to reduce the time and cost required to prepare NEPA documents Benefits of Site-wide NEPA Review More Documents & Publications Benefits of Site-wide NEPA National Environmental Policy Act Review (1994)

282

Interconnection-Wide Transmission Planning Initiative: Topic A,  

Broader source: Energy.gov (indexed) [DOE]

Interconnection-Wide Transmission Planning Initiative: Topic A, Interconnection-Wide Transmission Planning Initiative: Topic A, Interconnection-Level Analysis and Planning Interconnection-Wide Transmission Planning Initiative: Topic A, Interconnection-Level Analysis and Planning A description of the requirements for Topic A for all Interconnections under the Interconnection-Wide Transmission Planning Initiative, part of the American Recovery and Reinvestment Act. Interconnection-Wide Transmission Planning Initiative: Topic A, Interconnection-Level Analysis and Planning More Documents & Publications Microsoft Word - yDE-FOA-0000068.rtf Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation Among States in the Eastern Interconnection on Electric Resource Planning and Priorities Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation

283

A Low-Cost System for Measuring Horizontal Winds from Single-Engine Aircraft  

Science Journals Connector (OSTI)

The implementation and accuracy of a low-rate (~1 Hz) horizontal wind measurement system is described for a fixed-wing aircraft without modification to the airframe. The system is based on a global positioning system (GPS) compass that provides ...

Stephen A. Conley; Ian C. Faloona; Donald H. Lenschow; Anna Karion; Colm Sweeney

2014-06-01T23:59:59.000Z

284

Robust control of transition maneuvers for a class of V/STOL aircraft  

Science Journals Connector (OSTI)

This work focuses on the control law design for a class of aerial systems able to perform transition maneuvers from hover to level flight configurations. An analysis of the aircraft dynamics and of the flight envelope of the vehicle, encompassing both ... Keywords: Path following, Robust control, Transition maneuver, Unmanned Aerial Vehicles

Roberto Naldi; Lorenzo Marconi

2013-06-01T23:59:59.000Z

285

Proceedings of the 2007 Aging Aircraft Conference Integration of Technology Roadmapping Information and Business Case  

E-Print Network [OSTI]

Proceedings of the 2007 Aging Aircraft Conference Integration of Technology Roadmapping Information with technology insertion roadmaps. This report describes the development of an information model that details technology roadmapping information for use within obsolescence-driven design refresh planning, and also

Sandborn, Peter

286

Interface design for an aircraft thrust and braking indicator/advisor  

Science Journals Connector (OSTI)

Recent advances in the development of aircraft landing and takeoff performance monitoring systems (Pinder, 2003) have shown the feasibility of a cockpit instrument that could aid significantly in the decision making process during the most critical phases ... Keywords: auditory interfaces, aviation, bimodal user interfaces, cockpit user interfaces

S. D. Pinder; D. N. Bristow; T. C. Davies

2006-11-01T23:59:59.000Z

287

A UAV motor denoising technique to improve localization of surrounding noisy aircrafts: proof of  

E-Print Network [OSTI]

A UAV motor denoising technique to improve localization of surrounding noisy aircrafts: proof of the Acoustics 2012 Nantes Conference 23-27 April 2012, Nantes, France 2937 #12;Unmanned Aerial Vehicles (UAVs of monitoring and surveillance applications. A major problem when operating with swarm of UAVs is the risk

Paris-Sud XI, Université de

288

Biomass burning emission inventory with daily resolution: Application to aircraft observations of Asian outflow  

E-Print Network [OSTI]

Biomass burning emission inventory with daily resolution: Application to aircraft observations for biomass burning using AVHRR satellite observations of fire activity corrected for data gaps and scan angle biomass burning in SE Asia was a major contributor to the outflow of Asian pollution observed in TRACE

Palmer, Paul

289

Ionospheric Threat Parameterization for Local Area Global-Positioning-System-Based Aircraft Landing Systems  

E-Print Network [OSTI]

Ionospheric Threat Parameterization for Local Area Global-Positioning-System-Based Aircraft Landing of user separation. The method of data analysis that produced these results is described, and a threat space that parameterizes these possible threats to user integrity is defined. Certain configurations

Stanford University

290

Aircraft Microphysical Documentation from Cloud Base to Anvils of Hailstorm Feeder Clouds in Argentina  

E-Print Network [OSTI]

Aircraft Microphysical Documentation from Cloud Base to Anvils of Hailstorm Feeder Clouds Documentation during January and February 2000 of the structure of severe convective storms in Men- dozaI) rockets, guided by tracking radar, to seed the high-reflectivity cores of in- cipient hailstorms (Makitov

Daniel, Rosenfeld

291

Aircraft Integrity and Reliability Carlos Ferregut 1 , Roberto A. Osegueda 1 , Yohans Mendoza 1 ,  

E-Print Network [OSTI]

@unm.edu Abstract. In his recent paper ``Probability theory needs an infusion of fuzzy logic to enhance its ability to deal with real­world problems'', L. A. Zadeh explains that probability theory needs an infusion of a real­world problem for which such an infusion is indeed successful: the problems of aircraft integrity

Kreinovich, Vladik

292

Application of dynamic programming approach to aircraft take-off in a windshear  

E-Print Network [OSTI]

speed relative to wind aircraft speed relative to ground relative path inclination angle of attack liftdrag;thrust; (1) (2) #12;Forces Thrust: Drag: Lift: 10 #12;Wind (microburst) 11 #12;Microburst: Model 1 in the presence of wind disturbances, Izv. Ross. Akad. Nauk, Tekhn. Kibernet., no. 1, 68-76, 1993 (in Russian

Turova, Varvara

293

Knowledge-based support in Non-Destructive Testing for health monitoring of aircraft structures  

Science Journals Connector (OSTI)

Maintenance manuals include general methods and procedures for industrial maintenance and they contain information about principles of maintenance methods. Particularly, Non-Destructive Testing (NDT) methods are important for the detection of aeronautical ... Keywords: Aircraft industry, Conceptual graphs, Experienced knowledge, Formal visual reasoning, Maintenance procedure, Non-Destructive Testing

Bernard Kamsu-Foguem

2012-10-01T23:59:59.000Z

294

Proceedings of ICONS 2002. International Conference on Sonar Sensors and Systems. SOUND FROM A LIGHT AIRCRAFT  

E-Print Network [OSTI]

in all three media. A technique has been developed for measuring the low-frequency sound speed A LIGHT AIRCRAFT FOR UNDERWATER ACOUSTICS APPLICATIONS Michael J. Buckingham, Eric M. Giddens, Fernando the coast, north of La Jolla, southern California, USA, in which a single-engine, propeller-driven light

Buckingham, Michael

295

Full-Scale Structural and NDI Validation Tests of Bonded Composite Doublers for Commercial Aircraft Applications  

SciTech Connect (OSTI)

Composite doublers, or repair patches, provide an innovative repair technique which can enhance the way aircraft are maintained. Instead of riveting multiple steel or aluminum plates to facilitate an aircraft repair, it is possible to bond a single Boron-Epoxy composite doubler to the damaged structure. Most of the concerns surrounding composite doubler technology pertain to long-term survivability, especially in the presence of non-optimum installations, and the validation of appropriate inspection procedures. This report focuses on a series of full-scale structural and nondestructive inspection (NDI) tests that were conducted to investigate the performance of Boron-Epoxy composite doublers. Full-scale tests were conducted on fuselage panels cut from retired aircraft. These full-scale tests studied stress reductions, crack mitigation, and load transfer capabilities of composite doublers using simulated flight conditions of cabin pressure and axial stress. Also, structures which modeled key aspects of aircraft structure repairs were subjected to extreme tension, shear and bending loads to examine the composite laminate's resistance to disbond and delamination flaws. Several of the structures were loaded to failure in order to determine doubler design margins. Nondestructive inspections were conducted throughout the test series in order to validate appropriate techniques on actual aircraft structure. The test results showed that a properly designed and installed composite doubler is able to enhance fatigue life, transfer load away from damaged structure, and avoid the introduction of new stress risers (i.e. eliminate global reduction in the fatigue life of the structure). Comparisons with test data obtained prior to the doubler installation revealed that stresses in the parent material can be reduced 30%--60% through the use of the composite doubler. Tests to failure demonstrated that the bondline is able to transfer plastic strains into the doubler and that the parent aluminum skin must experience significant yield strains before any damage to the doubler will occur.

Roach, D.; Walkington, P.

1999-02-01T23:59:59.000Z

296

Many-body wave scattering by small bodies and applications II  

E-Print Network [OSTI]

The many-body wave scattering problem is studied in the case where the bodies are small, $ka \\ll 1$, where $a$ is the characteristic size of a body. The limiting case when $a \\to 0$ and the total number of the small bodies is $M = O (a^{2-\\kappa})$ is studied, $\\kappa\\in (0,1)$ is a parameter, the distance $d$ between neighboring bodies is $d=O(a^{(2-\\kappa)/3}$.

A. G. Ramm; A. Rona

2009-10-29T23:59:59.000Z

297

Comparison of measured Concorde supersonic transport aircraft noise levels to regulatory levels and health and welfare criteria  

Science Journals Connector (OSTI)

A considerable quantity of measured noise level data has been collected for approach and take?off operations of the Anglo?French Concorde Supersonic Transport (SST) aircraft. The largest body of SST noise data has been obtained by the FAA at Dulles International Airport in Virginia and is generally in the form of maximum A?weighted noise level and Effective Perceived Noise Level. However during test flight operations at various airports in the U. S. (in Alaska California Texas and other states) noise data in the form of various noise rating scales including maximum A?weighted and C?weighted level single event noise exposure level (SENEL) perceived noise level (PNL) effective perceived noise level (EPNL) and others have been obtained. There is a requirement to compare the corresponding values of the various noise rating scales to determine ff there are consistent relationships (differences) between them so the noise levels in terms of one rating scale can be predicted from noise levels in the form of another rating scale. This is particularly important since most of the SST data collected is in terms of PNL or EPNL and the proposal in Congressman Glen Anderson's bill (HR 8729) to standardize all noise data to the average day?night level (L dn) will require converting to the SENEL scale. Therefore the available SST data were evaluated and summarized to provide a comparison to the FAA FAR 36 noise limits and to establish conversion factors for transferring from one noise rating scale to another.

S. R. Lane

1978-01-01T23:59:59.000Z

298

Media Advisory: Site-wide Safety Standards | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Media Advisory: Site-wide Safety Standards Media Advisory: Site-wide Safety Standards Media Advisory: Site-wide Safety Standards August 1, 2012 - 12:00pm Addthis Media Contacts Michael Turner, MSA michael_j_turner@rl.gov 509-376-2872 What: Department of Energy to announce two additions to the Hanford Site-wide Safety Standards - a set of 14 areas where Hanford contractors have collaborated to establish one uniform standard to guide safe operations. The latest additions to the Site-wide Safety Standards are Fall Protection and Electrical Safety. DOE Hanford management will explain the significance of the Site-wide Safety Standards, their use and application at the Hanford Site, the benefits to workers and the example Hanford is setting for excellence in safety. Media will then be offered a demonstration of Fall Protection training, along with other training programs at the DOE's Volpentest HAMMER Training Center, operated by Mission Support Alliance.

299

Executive Order 13583, Establishing a Coordinated Government-Wide  

Broader source: Energy.gov (indexed) [DOE]

Executive Order 13583, Establishing a Coordinated Government-Wide Executive Order 13583, Establishing a Coordinated Government-Wide Initiative to Promote Diversity and Inclusion in the Federal Workforce Executive Order 13583, Establishing a Coordinated Government-Wide Initiative to Promote Diversity and Inclusion in the Federal Workforce August 18, 2011 - 11:15am Addthis Executive Order 13583 Established a "coordinated government-wide initiative to promote diversity and inclusion in the federal workforce". Wherever possible, the Federal Government must also seek to consolidate compliance efforts established through related or overlapping statutory mandates, directions from Executive Orders, and regulatory requirements. Addthis Related Articles A Government-Wide Approach to a Diverse Workforce Executive Order 13583, Establishing a Coordinated Government-Wide Initiative to Promote Diversity and Inclusion in the Federal Workforce

300

Definition: Wide Area Monitoring, Visualization, & Control | Open Energy  

Open Energy Info (EERE)

Wide Area Monitoring, Visualization, & Control Wide Area Monitoring, Visualization, & Control Jump to: navigation, search Dictionary.png Wide Area Monitoring, Visualization, & Control Wide area monitoring and visualization requires time synchronized sensors, communications, and information processing that make it possible for the condition of the bulk power system to be observed and understood in real-time so that protective, preventative, or corrective action can be taken.[1] Related Terms Wide area, bes emergency, sustainability, smart grid References ↑ SmartGrid.gov 'Description of Functions' An inl LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ine Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Wide_Area_Monitoring,_Visualization,_%26_Control&oldid=502579

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

EA-1583: Final Site-wide Environmental Assessment | Department...  

Broader source: Energy.gov (indexed) [DOE]

Assessment EA-1583: Final Site-wide Environmental Assessment RMOTCNaval Petroleum Reserve No. 3 (October 2008) SUMMARY: The U.S. Departmem of Energy (DOE) is...

302

EA-1956: Site-Wide Environmental Assessment for the Divestiture...  

Energy Savers [EERE]

Assessment for the Divestiture of Rocky Mountain Oilfield Testing Center and Naval Petroleum Reserve No. 3, Natrona County, Wyoming EA-1956: Site-Wide Environmental Assessment...

303

Table 4-3 Site Wide Environmental Management Matrix  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Table 4-3. Site-Wide Environmental Management Matrix National Renewable Energy Laboratory's South Table Mountain Complex FINAL POTENTIAL ISSUES PROGRAM OF IMPROVEMENTS Off- Site...

304

EIS-0238: Draft Site-Wide Environmental Impact Statement  

Broader source: Energy.gov [DOE]

Draft Site-Wide Environmental Impact Statement on the Continued Operation of the Los Alamos National Laboratory, Los Alamos, New Mexico

305

EA-1956: Draft Site-Wide Environmental Assessment  

Broader source: Energy.gov [DOE]

Site-Wide Environmental Assessment for the Divestiture of Rocky Mountain Oilfield Testing Center and Naval Petroleum Reserve No. 3, Natrona County, Wyoming

306

EIS-0426: Site-Wide Environmental Impact Statement for Continued...  

Office of Environmental Management (EM)

Site-Wide Environmental Impact Statement for Continued Operation of the Department of Energy National Nuclear Security Administration Nevada National Security Site and Off-Site...

307

Introduction Terrestrial animals that differ widely in mass, morphology  

E-Print Network [OSTI]

resemble relatively simple `spring-loaded inverted pendulum' (SLIP) systems (Cavagna et al., 1977; Farley such as greyhounds (Usherwood and Wilson, 2005). By artificially increasing yaw inertia, body shape was shown

Jindrich, Devin L.

308

Indexing The World Wide Web: The Journey So Far  

E-Print Network [OSTI]

Indexing The World Wide Web: The Journey So Far Abhishek Das Google Inc., USA Ankit Jain Google Inc., USA ABSTRACT In this chapter, we describe the key indexing components of today's web search engines. As the World Wide Web has grown, the systems and methods for indexing have changed significantly. We present

Pregibon, Daryl

309

How Big Is the World Wide Web? Adrian Dobra  

E-Print Network [OSTI]

How Big Is the World Wide Web? Adrian Dobra Department of Statistics Carnegie Mellon University of sound proce­ dures for assessing the size of the World Wide Web. The problem is compounded by the fact that sampling directly from the Web is not possible. Several groups of re­ searchers have found sampling schemes

310

Genome-wide polymorphisms show unexpected targets of natural selection  

Science Journals Connector (OSTI)

...in response to pathogen load and diversity. 4. Discussion...examined genome-wide data on genetic polymorphisms...approaches that yield genetic data at many loci across the...16] and the analytical power of combining these data with genome-wide gene...

2012-01-01T23:59:59.000Z

311

Wide Area Ocean Networks: Architecture and System Design Considerations  

E-Print Network [OSTI]

static with power tether: these will either reside on the sea-bed or float on the ocean surface (surfaceWide Area Ocean Networks: Architecture and System Design Considerations Sumit Roy University 98105-6698 {payman,rouseff,warren}@apl.washington.edu ABSTRACT Wide area ocean networks for monitoring

Arabshahi, Payman

312

Nanomedicine and Body Modification: Critical Perspectives  

Science Journals Connector (OSTI)

This chapter examines nanomedicine in relation to body modification, in particular ... is cosmetic surgery. It asks what possibilities nanomedicine might offer patients seeking cosmetic enhancement, and...nanomedicine

Melanie Latham

2014-01-01T23:59:59.000Z

313

Male body image: critical measurement issues  

E-Print Network [OSTI]

12 16 RESULTS. . . 18 Companng the SM and the BIA m the Assessment of Body Image. How Accurate Were Males and Females m Gauging Their Musculanty and Body Fatness' ?. . . How Accurate Were Males and Females m Gauging What the Opposite Sex Found...-wise Compansons for Quesuon Main Effects wtth BF%. Male and Female. 49 9 Comparmg Effect Sizes (Current vs. Ideal) Body Image Assessment (BIA) vs Somatomorphic Matnx (SM) 50 10 Factor Structure of the Affective Body Satisfaction (ABS). 51 11 Comparing Explamed...

Brown, Joshua Daniel

2002-01-01T23:59:59.000Z

314

Method of producing .beta.-spodumene bodies  

DOE Patents [OSTI]

Beta-spodumene bodies and method of preparing the bodies that involves providing a uniform plastic batch of inorganic raw materials, organic binder, and vehicle, wherein the inorganic raw materials are composed of, in percent by weight, about 75% to 95% minerals, and about 5% to 25% glass. The batch is formed into a green body that is fired to produce a body composed substantially of beta-spodumene, and having a thermal expansion coefficient of <10.times.10.sup.-7 /.degree.C.(0-800.degree. C.), and a strength of .gtoreq.4 Ksi.

Chyung, Kenneth (Painted Post, NY); Day, J. Paul (Big Flats, NY); Holleran, Louis M. (Big Flats, NY); Olszewski, Anthony R. (Bath, NY)

1999-01-01T23:59:59.000Z

315

ATHENA, the Desktop Human "Body"  

ScienceCinema (OSTI)

Creating surrogate human organs, coupled with insights from highly sensitive mass spectrometry technologies, a new project is on the brink of revolutionizing the way we screen new drugs and toxic agents. ATHENA, the Advanced Tissue-engineered Human Ectypal Network Analyzer project team, is developing four human organ constructs - liver, heart, lung and kidney - that are based on a significantly miniaturized platform. Each organ component will be about the size of a smartphone screen, and the whole ATHENA "body" of interconnected organs would fit neatly on a desk. "By developing this 'homo minutus,' we are stepping beyond the need for animal or Petri dish testing: There are huge benefits in developing drug and toxicity analysis systems that can mimic the response of actual human organs," said Rashi Iyer, a senior scientist at Los Alamos National Laboratory, the lead laboratory on the five-year, $19 million multi-institutional effort. The project is supported by the Defense Threat Reduction Agency (DTRA). Some 40 percent of pharmaceuticals fail their clinical trials, Iyer noted, and there are thousands of chemicals whose effects on humans are simply unknown. Providing a realistic, cost-effective and rapid screening system such as ATHENA with high-throughput capabilities could provide major benefits to the medical field, screening more accurately and offering a greater chance of clinical trial success.

Iyer, Rashi; Harris, Jennifer

2015-01-05T23:59:59.000Z

316

ATHENA, the Desktop Human "Body"  

SciTech Connect (OSTI)

Creating surrogate human organs, coupled with insights from highly sensitive mass spectrometry technologies, a new project is on the brink of revolutionizing the way we screen new drugs and toxic agents. ATHENA, the Advanced Tissue-engineered Human Ectypal Network Analyzer project team, is developing four human organ constructs - liver, heart, lung and kidney - that are based on a significantly miniaturized platform. Each organ component will be about the size of a smartphone screen, and the whole ATHENA "body" of interconnected organs would fit neatly on a desk. "By developing this 'homo minutus,' we are stepping beyond the need for animal or Petri dish testing: There are huge benefits in developing drug and toxicity analysis systems that can mimic the response of actual human organs," said Rashi Iyer, a senior scientist at Los Alamos National Laboratory, the lead laboratory on the five-year, $19 million multi-institutional effort. The project is supported by the Defense Threat Reduction Agency (DTRA). Some 40 percent of pharmaceuticals fail their clinical trials, Iyer noted, and there are thousands of chemicals whose effects on humans are simply unknown. Providing a realistic, cost-effective and rapid screening system such as ATHENA with high-throughput capabilities could provide major benefits to the medical field, screening more accurately and offering a greater chance of clinical trial success.

Iyer, Rashi; Harris, Jennifer

2014-09-29T23:59:59.000Z

317

Wide Bandgap Semiconductors: Essential to Our Technology Future |  

Broader source: Energy.gov (indexed) [DOE]

Wide Bandgap Semiconductors: Essential to Our Technology Future Wide Bandgap Semiconductors: Essential to Our Technology Future Wide Bandgap Semiconductors: Essential to Our Technology Future January 15, 2014 - 8:00am Addthis Learn how wide bandgap semiconductors could impact clean energy technology and our daily lives. | Video by Sarah Gerrity and Matty Greene, Energy Department. Dr. Ernest Moniz Dr. Ernest Moniz Secretary of Energy What are the key facts? North Carolina State University will lead the Energy Department's new manufacturing innovation institute for the next generation of power electronics, focusing on wide bandgap (WBG) semiconductors. Building America's leadership in WBG semiconductor manufacturing while driving down the cost of the technology could lead to more affordable products for businesses and consumers, billions of dollars in energy

318

Interconnection-Wide Transmission Planning Initiative: Topic A,  

Broader source: Energy.gov (indexed) [DOE]

A, A, Interconnection-Level Analysis and Planning Interconnection-Wide Transmission Planning Initiative: Topic A, Interconnection-Level Analysis and Planning A description of the requirements for Topic A for all Interconnections under the Interconnection-Wide Transmission Planning Initiative, part of the American Recovery and Reinvestment Act. Interconnection-Wide Transmission Planning Initiative: Topic A, Interconnection-Level Analysis and Planning More Documents & Publications Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation Among States in the Eastern Interconnection on Electric Resource Planning and Priorities Microsoft Word - yDE-FOA-0000068.rtf Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation Among States in the Western Interconnection on Electric Resource Planning

319

Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation  

Broader source: Energy.gov (indexed) [DOE]

Interconnection-Wide Transmission Planning Initiative: Topic B, Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation Among States in the Eastern Interconnection on Electric Resource Planning and Priorities Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation Among States in the Eastern Interconnection on Electric Resource Planning and Priorities A description of the requirements for Topic B for the Eastern Interconnection under the Interconnection-Wide Transmission Planning Initiative, part of the American Recovery and Reinvestment Act. The fundamental purpose of the awards under Topic B is to facilitate dialogue and collaboration among the states in the respective interconnections (or among state agencies, in the Texas Interconnection). Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation

320

Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation  

Broader source: Energy.gov (indexed) [DOE]

Interconnection-Wide Transmission Planning Initiative: Topic B, Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation Among States in the Eastern Interconnection on Electric Resource Planning and Priorities Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation Among States in the Eastern Interconnection on Electric Resource Planning and Priorities A description of the requirements for Topic B for the Eastern Interconnection under the Interconnection-Wide Transmission Planning Initiative, part of the American Recovery and Reinvestment Act. The fundamental purpose of the awards under Topic B is to facilitate dialogue and collaboration among the states in the respective interconnections (or among state agencies, in the Texas Interconnection). Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

An Observing System Simulation Experiment for the Unmanned Aircraft System Data Impact on Tropical Cyclone Track Forecasts  

Science Journals Connector (OSTI)

High-altitude, long-endurance unmanned aircraft systems (HALE UAS) are capable of extended flights for atmospheric sampling. A case study was conducted to evaluate the potential impact of dropwindsonde observations from HALE UAS on tropical ...

N. C. Privé; Yuanfu Xie; Steven Koch; Robert Atlas; Sharanya J. Majumdar; Ross N. Hoffman

2014-11-01T23:59:59.000Z

322

The Management of Political Risk in the Overseas Mergers and Acquisitions of General Aviation Aircraft Company Limited of China  

Science Journals Connector (OSTI)

In this paper, at the background of the General Aviation Aircraft Co., Ltd. of China (GAAC) mergers successfully the Cirrus Corporation of American (CCA), by analyzing political risks which existing in the overse...

Xi-yu Han; Wei-li Xia

2013-01-01T23:59:59.000Z

323

A flight test system for the determination of the stability and control derivatives of a general aviation aircraft  

E-Print Network [OSTI]

and flight modes. Maneuvers were performed that would yield the most useful data for determining stability and control derivatives. Flight tests were performed for various airspeeds, altitudes, and aircraft configurations. Takeoff, landing, cruise and engine...

Oehl, David Christopher

1995-01-01T23:59:59.000Z

324

Online measurements of the emissions of intermediate-volatility and semi-volatile organic compounds from aircraft  

E-Print Network [OSTI]

A detailed understanding of the climate and air quality impacts of aviation requires measurements of the emissions of intermediate-volatility and semi-volatile organic compounds (I/SVOCs) from aircraft. Currently both the ...

Herndon, S. C.

325

Nitric oxide emissions from the high-temperature viscous boundary layers of hypersonic aircraft within the stratosphere  

SciTech Connect (OSTI)

The authors study the nitric oxide emission characteristics of supersonic aircraft resulting from heating of viscous boundary layers along the skin of the aircraft. Previous study has concentrated on nitric oxide emissions coming from combustion products from the scramjet engines. This work shows that above mach 8, emissions from viscous heating become a significant factor in total emission of nitric oxide. Above mach 16 it becomes the dominant source of emission.

Brooks, S.B.; Lewis, M.J.; Dickerson, R.R. [Univ. of Maryland, College Park, MD (United States)

1993-09-20T23:59:59.000Z

326

An experimental investigation of a simple model simulation of a complex non-uniform beam (aircraft) vibration  

E-Print Network [OSTI]

AN EXPERIMENTAL INVESTIGATION OF A SIMPLE MODEL SIMULATION OF A COMPLEX NON-UNIFORM BEAM (AIRCRAFT) VIBRATION A Thesis By WILLIAM DAVID HARDIN Submitted to the Graduate College of the Texas A%M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 1966 Major Subject: Mechanical Engineering AN EXPERIMENTAL INVESTIGATION OF A SIMPLE MODEL SIMULATION OF A COMPLEX NON-UNIFORM BEAM (AIRCRAFT) VIBRATION A Thesis By WILLIAM DAVID HARDIN Approved...

Hardin, William David

2012-06-07T23:59:59.000Z

327

On the problem of large perturbation flow created by near-hovering flight of aircraft  

E-Print Network [OSTI]

ON THE PROBLEM OF LARGE PERTURBATION FLOW CREATED BY NEAR-HOVERING FLIGHT OF AIRCRAFT A Thesis WILLIAM HENRY RUDDEROW Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in Partial Fulfillment... of the Requirements for the Degree of MASTER OF SCIENCE January, 1960 Department of Aeronautical Engineering Major Subject: Aeronautical Engineering ACKNOWLEDGEMERTS I wish to take this opportunity to express my appreciation to Professor Albert Gail for his...

Rudderow, William Henry

1960-01-01T23:59:59.000Z

328

Aircraft Measurements and Numerical Simulations of Gravity Waves in the Extratropical  

E-Print Network [OSTI]

of RF-02 in START08 1.67km WRF simulations at 1800 UTC 04/22/2008 (1600 MDT 04/21/2008) Grey Shaded Area: 9km Wind Speed (m/s) Blue/Red Contour: 12.5km Divergence (pos/neg) Divergence at Flight Height Black Contour: 9km Pressure Vector: 9km Wind Field (m/s) O A B C #12;Spectral Analysis of Aircraft Measurements

Thompson, Anne

329

Development and validation of nondestructive inspection techniques for composite doubler repairs on commercial aircraft  

SciTech Connect (OSTI)

Composite doublers, or repair patches, provide an innovative repair technique which can enhance the way aircraft are maintained. Instead of riveting multiple steel or aluminum plates to facilitate an aircraft repair, it is possible to bond a single boron-epoxy composite doubler to the damaged structure. In order for the use of composite doublers to achieve widespread use in the civil aviation industry, it is imperative that methods be developed which can quickly and reliably assess the integrity of the doubler. In this study, a specific composite application was chosen on an L-1011 aircraft in order to focus the tasks on application and operation issues. Primary among inspection requirements for these doublers is the identification of disbonds, between the composite laminate and aluminum parent material, and delaminations in the composite laminate. Surveillance of cracks or corrosion in the parent aluminum material beneath the doubler is also a concern. No single nondestructive inspection (NDI) method can inspect for every flaw type, therefore it is important to be aware of available NDI techniques and to properly address their capabilities and limitations. A series of NDI tests were conducted on laboratory test structures and on full-scale aircraft fuselage sections. Specific challenges, unique to bonded composite doubler applications, were highlighted. An array of conventional and advanced NDI techniques were evaluated. Flaw detection sensitivity studies were conducted on applicable eddy current, ultrasonic, X-ray and thermography based devices. The application of these NDI techniques to composite doublers and the results from test specimens, which were loaded to provide a changing flaw profile, are presented in this report. It was found that a team of these techniques can identify flaws in composite doubler installations well before they reach critical size.

Roach, D.; Walkington, P.

1998-05-01T23:59:59.000Z

330

Ozone levels in passenger cabins of commercial aircraft on North American  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ozone levels in passenger cabins of commercial aircraft on North American Ozone levels in passenger cabins of commercial aircraft on North American and transoceanic routes Title Ozone levels in passenger cabins of commercial aircraft on North American and transoceanic routes Publication Type Journal Article Year of Publication 2008 Authors Bhangar, Seema, Shannon Cowlin, Brett C. Singer, Richard G. Sextro, and William W. Nazaroff Journal Environmental Science and Technology Volume 42 Issue 11 Pagination 3938-43 Abstract Ozone levels in airplane cabins, and factors that influence them, were studied on northern hemisphere commercial passenger flights on domestic U.S., transatlantic, and transpacific routes. Real-time data from 76 flights were collected in 2006-2007 with a battery-powered UV photometric monitor. Sample mean ozone level, peak-hour ozone level, and flight-integrated ozone exposures were highly variable across domestic segments (N = 68), with ranges of 100 ppbv) ozone levels on domestic flights were associated with winter-spring storms that are linked to enhanced exchange between the lower stratosphere and the upper troposphere.

331

Effects of simulated jet aircraft noise on heart rate and behavior of desert ungulates  

SciTech Connect (OSTI)

Many landscapes underlying military designated air spaces have been established as national parks, wildlife refuges, or wilderness areas. The juxtaposition of public, wilderness, and military uses has led to questions of compatibility between aircraft and wildlife. We evaluated the effects of simulated low-altitude jet aircraft noise on the behavior and heart rate of captive desert mule deer (n = 6) and mountain sheep (n - 5). We measured heart rate and behavior related to the number of simulated overflights (n = 112 overflights/season) during 3 seasons. The heart rates of ungulates increased related to dB levels during simulated overflights (P {le} 0.05), but they returned to pre-disturbance levels in 60-180 seconds. Animal behavior also changed during overflights but returned to pre-disturbance condition in {le}252 seconds (P {le} 0.005). All animal responses decreased with increased exposure suggesting that they habituated to simulated sound levels of low-altitude aircraft. 43 refs., 5 tabs.

Weisenberger, M.E.; Krausman, P.R.; Wallace, M.C. [Univ. Arizona, Tucson, AZ (United States)] [and others

1996-01-01T23:59:59.000Z

332

Corrosion on aircrafts in marine-tropical environments: A technical analysis  

SciTech Connect (OSTI)

Previous research revealed the aggressiveness of the marine-tropical environment on airframes. Such structures, improperly coated with protective treatments, were easily deteriorated by corrosion in these environments in just a matter of weeks. In addition, the amount of existing salt deposition and lack of anticorrosion maintenance programs adapted to these conditions contributed to the progressive deterioration of the aircraft. Notwithstanding the fact that the corrosive phenomenon is in many cases well understood by the operators, annual costs because of corrosion were still high. Several studies reveal the aeronautic aluminum alloys susceptible to pitting corrosion, exfoliation corrosion, stress-corrosion cracking, intergranular corrosion, and hydrogen embrittlement in a marine-tropical environment. The most affected areas found in the aircrafts were internal and external wing structures, followed by fuselage bilge areas and flight control surfaces. Results of studies made on aeronautical aluminum alloys 2024-T3, 7075-T6, 7020, and 8090 in atmospheres containing ions Cl{sup {minus}}, SO{sub 3}, and polluting dust have established external parameters that influence corrosion, including environmental contamination, temperature, and electrode potential. Internal parameters include alloy composition, thermal treatment, and surface coatings. Correlation of electrochemical tests, and microstructural and atmospheric tests allow a better understanding of the corrosive phenomenon in airframes, establishing criteria for material selection and preventive maintenance programs to guarantee the safe operation of the aircraft.

Alvarez, A. [Univ. of Idaho, Moscow, ID (United States). Inst. for Materials and Advanced Processes

1997-05-01T23:59:59.000Z

333

Design, fabrication and testing of a liquid hydrogen fuel tank for a long duration aircraft  

Science Journals Connector (OSTI)

Liquid hydrogen has distinct advantages as an aircraft fuel. These include a specific heat of combustion 2.8 times greater than gasoline or jet fuel and zero carbon emissions. It can be utilized by fuel cells turbine engines and internal combustion engines. The high heat of combustion is particularly important in the design of long endurance aircraft with liquid hydrogen enabling cruise endurance of several days. However the mass advantage of the liquid hydrogen fuel will result in a mass advantage for the fuel system only if the liquid hydrogen tank and insulation mass is a small fraction of the hydrogen mass. The challenge is producing a tank that meets the mass requirement while insulating the cryogenic liquid hydrogen well enough to prevent excessive heat leak and boil off. In this paper we report on the design fabrication and testing of a liquid hydrogen fuel tank for a prototype high altitude long endurance (HALE) demonstration aircraft. Design options on tank geometry tank wall material and insulation systems are discussed. The final design is an aluminum sphere insulated with spray on foam insulation (SOFI). Several steps and organizations were involved in the tank fabrication and test. The tank was cold shocked helium leak checked and proof pressure tested. The overall thermal performance was verified with a boil off test using liquid hydrogen.

Gary L. Mills; Brian Buchholtz; Al Olsen

2012-01-01T23:59:59.000Z

334

PML nuclear bodies: dynamic sensors of DNA  

E-Print Network [OSTI]

-a (RAR-a).(8­10) Nuclear domains containing PML are disrupted or dispersed in the lymphocytes of APLPML nuclear bodies: dynamic sensors of DNA damage and cellular stress Graham Dellaire and David P. Bazett-Jones* Summary Promyelocytic leukaemia nuclear bodies (PML NBs) are generally present in all

Dellaire, Graham

335

EA-1422: Sandia National Laboratories Site-Wide Environmental  

Broader source: Energy.gov (indexed) [DOE]

422: Sandia National Laboratories Site-Wide Environmental 422: Sandia National Laboratories Site-Wide Environmental Assessment/California EA-1422: Sandia National Laboratories Site-Wide Environmental Assessment/California SUMMARY Sandia National Laboratories (SNL) is one of three national laboratories that support the DOE's statutory responsibilities for nuclear weapons research and design, development of energy technologies, and basic scientific research. SNL is composed of four geographically separated facilities: Albuquerque, New Mexico (SNL/NM); Tonopah, Nevada; Kauai, Hawaii; and Livermore, California (SNL/CA). This SWEA focuses on SNL/CA. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD September 3, 2012 EA-1422-SA-01: Supplement Analysis Final Site-Wide Environmental Assessment for Sandia National

336

DOE-Wide NEPA Contracting | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

DOE-Wide NEPA Contracting DOE-Wide NEPA Contracting DOE-Wide NEPA Contracting DOE has seven indefinite delivery/indefinite quantity (task order) contracts for use by DOE Program and Field Offices nationwide, including the National Nuclear Security Agency (NNSA) and the Federal Energy Regulatory Commission.These contracts are for NEPA support services in preparing EISs and EAs, environmental reports and other documentation required by the Nuclear Regulatory Commission in its review of license applications, and other related environmental documents, such as floodplain and wetland assessments. The links above provide useful information to potential users of the DOE-wide NEPA contracts primarily DOE NEPA Compliance Officers, NEPA Document Managers, and Contracting Officers. The documents are public

337

Proposed Energy Transport Corridors: West-wide energy corridor programmatic  

Broader source: Energy.gov (indexed) [DOE]

Energy Transport Corridors: West-wide energy corridor Energy Transport Corridors: West-wide energy corridor programmatic EIS, Draft Corridors - September 2007. Proposed Energy Transport Corridors: West-wide energy corridor programmatic EIS, Draft Corridors - September 2007. Map of the area covered by a programmatic environmental impact statement (PEIS), "Designation of Energy Corridors on Federal Land in the 11 Western States" (DOE/EIS-0386) to address the environmental impacts from the proposed action and the range of reasonable alternatives. The proposed action calls for designating more than 6,000 miles of energy transport corridors across the West. Proposed Energy Transport Corridors: West-wide energy corridor programmatic EIS, Draft Corridors - September 2007. More Documents & Publications

338

Federal Register Notice: National Nuclear Security Administration Site-Wide  

Broader source: Energy.gov (indexed) [DOE]

Register Notice: National Nuclear Security Administration Register Notice: National Nuclear Security Administration Site-Wide Environmental Impact Statement for Sandia National Laboratories, New Mexico (SNL/NM) Federal Register Notice: National Nuclear Security Administration Site-Wide Environmental Impact Statement for Sandia National Laboratories, New Mexico (SNL/NM) Federal Register / Vol. 76, No. 156 / Friday, August 12, 2011 / Notices. National Nuclear Security Administration Site-Wide Environmental Impact Statement for Sandia National Laboratories, New Mexico (SNL/NM). NNSA.SWEIS_.SNL_.NM_.pdf More Documents & Publications EIS-0466: Re-opening of Public Scoping Period and Announcement of Additional Public Scoping Meetings EIS-0466: Notice of Intent to Prepare an Environmental Impact Statement EIS-0281: Notice of Intent to Prepare a Site-Wide Environmental Impact

339

Automatic record extraction for the World Wide Web  

E-Print Network [OSTI]

As the amount of information on the World Wide Web grows, there is an increasing demand for software that can automatically process and extract information from web pages. Despite the fact that the underlying data on most ...

Shen, Yuan Kui

2006-01-01T23:59:59.000Z

340

Final Site-Wide Environmental Assessment of NREL's South Table...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

SITE-WIDE EA Department of Energy Golden Field Office 1617 Cole Boulevard Golden, Colorado 80401-3393 March5, 2003 DearStakeholder: SUBJECT: NOTICE OF AV AILABILITY OF DRAFT...

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

DOE/OIT Plant-Wide Energy Assessment Experience Summary  

E-Print Network [OSTI]

The Department of Energy (DOE) Office of Industrial Technologies (OIT) is sponsoring cost-shared, plant-wide energy assessments of industrial facilities through its BestPractices Program. The purpose of these assessments is to examine plant utility...

Olszewski, M.; Leach, R.; McElhaney, K.

342

Department-wide Quick Reaction Work Order System  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To describe the new Department Wide Quick Reaction Work Order System, to establish the criteria and procedures for its use, and to identify responsibilities for managing and operating the system.

1981-03-12T23:59:59.000Z

343

EA-1968: Draft Site-Wide Environmental Assessment  

Broader source: Energy.gov [DOE]

Site-Wide Environmental Assessment of the U.S. Department of Energy’s South Table Mountain (STM) Campus at the National Renewable Energy Laboratory (NREL), Golden, Colorado

344

Percutaneous Retrieval of Chronic Intravascular Foreign Bodies  

SciTech Connect (OSTI)

To evaluate the feasibility of intravascular retrieval of chronic foreign bodies, we retrospectively reviewed an 8 year experience (1993-2001) of percutaneous retrieval of chronically retained intravascular foreign bodies (n = 6). In 6 of 6 cases (4 catheter fragments, 2 guidewires), 5-90 days elapsed before retrieval via the femoral or internal jugular vein. Under fluoroscopy, we determined the foreign body's course, position and size. A guidewire was advanced through a multipurpose catheter to the foreign body. The multipurpose catheter was replaced with a gooseneck snare catheter and the snare advanced to grasp and remove the foreign body. Percutaneous retrieval was successful in all 6 cases. One patient experienced mild hemoptysis, which resolved within 24 hr of observation. No patient experienced long-term sequelae. Given the potential life-threatening complications from intravascular foreign bodies and the low complication rate from percutaneous retrieval, we recommend extraction of the foreign body even if it is asymptomatic in the chronic setting (> 24 hr)

Savage, Clare [University of Texas Medical Branch, Galveston, Texas, Department of Surgery (United States); Ozkan, Orhan S.; Walser, Eric M. [University of Texas Medical Branch, Galveston, Texas, Department of Radiology (United States); Wang Dongfang; Zwischenberger, Joseph B. [University of Texas Medical Branch, Galveston, Texas, Department of Surgery (United States)], E-mail: jzwische@utmb.edu

2003-09-15T23:59:59.000Z

345

The annual probability of an aircraft crash on the US Department of Energy reservation in Oak Ridge, Tennessee  

SciTech Connect (OSTI)

Aircraft hazards were evaluated to determine the total annual probability of an aircraft crash occurring at any structure located on the US Department of Energy (DOE) reservation in Oak Ridge, Tennessee. This report documents the use of an accepted methodology for calculating the probability of an aircraft crash as applied to the three Oak Ridge plant sites including the adjoining facilities. Based on the data contained herein, the evaluation concluded that the probability of an aircraft crash occurrence at a single facility is generally considered ``not credible`` as defined in DOE/OR-901. Additionally, reevaluation of probabilities would be necessary if significant changes were made to local air traffic. The probability of an aircraft crash could increase as a result of the opening of any new airport or heliport in the vicinity; a greater volume of air traffic from McGhee Tyson airport in Knoxville, should the airport status change from feeder airport to hub airport; the rerouting of commercial and/or military flights at the McGhee Tyson airport; and finally, a change in direction or the addition of a federal airway. At one time, DOE planned to establish a zone of prohibited airspace over the Y-12 plant; if the plans are enacted in the future, the probability of an aircraft crash at the Y-12 plant could decrease. Pilots since have been voluntarily requested not to fly below 3000 feet over the Y-12 plant. Also, the Federal Aviation Administration plans to reroute air traffic in the spring of 1993 on federal airway V16. However, the section of V16 which traverses the three plant sites and five adjoining facilities will not be altered. If this plan is implemented, the air traffic over the Oak Ridge facilities would not be affected significantly, and the probability of an aircraft crash as determined herein would be unchanged.

Seigler, R.S.; Luttrell, L.J.

1992-11-01T23:59:59.000Z

346

Electromagnetic wave scattering by small bodies  

E-Print Network [OSTI]

A reduction of the Maxwell's system to a Fredholm second-kind integral equation with weakly singular kernel is given for electromagnetic (EM) wave scattering by one and many small bodies. This equation is solved asymptotically as the characteristic size of the bodies tends to zero. The technique developed is used for solving the many-body EM wave scattering problem by rigorously reducing it to solving linear algebraic systems, completely bypassing the usage of integral equations. An equation is derived for the effective field in the medium, in which many small particles are embedded. A method for creating a desired refraction coefficient is outlined.

A. G. Ramm

2008-04-21T23:59:59.000Z

347

Impact of aircraft emissions on air quality in the vicinity of airports. Volume II. An updated model assessment of aircraft generated air pollution at LAX, JFK, and ORD. Final report Jan 1978-Jul 1980  

SciTech Connect (OSTI)

This report documents the results of the Federal Aviation Administration (FAA)/Environmental Protection Agency (EPA) air quality study which has been conducted to assess the impact of aircraft emissions of carbon monoxide (CO), hydrocarbons (HC), and oxides of nitrogen (NOx) in the vicinity of airports. This assessment includes the results of recent modeling and monitoring efforts at Washington National (DCA), Los Angeles International (LAX), Dulles International (IAD), and Lakeland, Florida airports and an updated modeling of aircraft generated pollution at LAX, John F. Kennedy (JFK) and Chicago O'Hare (ORD) airports. The Airport Vicinity Air Pollution (AVAP) model which was designed for use at civil airports was used in this assessment. In addition the results of the application of the military version of the AVAP model the Air Quality Assessment Model (AQAM), are summarized. Both the results of the pollution monitoring analyses in Volume I and the modeling studies in Volume II suggest that: maximum hourly average CO concentrations from aircraft are unlikely to exceed 5 parts per million (ppm) in areas of public exposure and are thus small in comparison to the National Ambient Air Quality Standard of 35 ppm; maximum hourly HC concentrations from aircraft can exceed 0.25 ppm over an area several times the size of the airport; and annual average NO2 concentrations from aircraft are estimated to contribute only 10 to 20 percent of the NAAQS limit level.

Yamartino, R.J.; Smith, D.G.; Bremer, S.A.; Heinold, D.; Lamich, D.

1980-07-01T23:59:59.000Z

348

Surface elements and landing strategies for small bodies missions – Philae and beyond  

Science Journals Connector (OSTI)

The investigation of small bodies, comets and asteroids, can contribute substantially to our understanding of the formation and history of the Solar System. In-situ observations by Landers play a prominent role in this field. The Rosetta Lander – Philae – is currently on its way to comet 67P/Churyumov–Gerasimenko. It will land in November 2014 and perform numerous experiments with a suite of 10 scientific instruments. Philae has been designed to cope with a wide range of possible comet properties. The considerations taken during its development are relevant for future Lander missions to small bodies in the Solar System. In addition the paper provides a review of alternative concepts, studied or developed for various missions like Phobos, Hayabusa/Minerva or Géocroiseur/Leonard. Various missions to small bodies in the Solar System, including Landers, are currently studied (e.g., Marco Polo). The paper will address the mission options and compare applicable technologies with the solutions chosen for Philae.

Stephan Ulamec; Jens Biele

2009-01-01T23:59:59.000Z

349

Data-driven human body morphing  

E-Print Network [OSTI]

This thesis presents an efficient and biologically informed 3D human body morphing technique through data-driven alteration of standardized 3D models. The anthropometric data is derived from a large empirical database and processed using principal...

Zhang, Xiao

2005-11-01T23:59:59.000Z

350

Interferometric Probes of Many-Body Localization  

E-Print Network [OSTI]

We propose a method for detecting many-body localization (MBL) in disordered spin systems. The method involves pulsed coherent spin manipulations that probe the dephasing of a given spin due to its entanglement with a set ...

Knap, M.

351

Progressive transitions using body part motion graphs  

Science Journals Connector (OSTI)

In this work we describe a preliminary method for progressive transitions in human locomotions. To achieve this, motion graphs have been used to synthesize body part transitions and every part has been synchronized with the other parts using time scaling. ...

Adso Fernández-Baena; David Miralles

2011-12-01T23:59:59.000Z

352

Interconnection-Wide Transmission Planning Initiative: Topic B, State  

Broader source: Energy.gov (indexed) [DOE]

State Agency Input Regarding Electric Resource and Transmission Planning in State Agency Input Regarding Electric Resource and Transmission Planning in the Texas Interconnection Interconnection-Wide Transmission Planning Initiative: Topic B, State Agency Input Regarding Electric Resource and Transmission Planning in the Texas Interconnection A description of the requirements for Topic B for the Texas Interconnect under the Interconnection-Wide Transmission Planning Initiative, part of the American Recovery and Reinvestment Act. The fundamental purpose of the awards under Topic B is to facilitate dialogue and collaboration among the states in the respective interconnections (or among state agencies, in the Texas Interconnection). Interconnection-Wide Transmission Planning Initiative: Topic B, State Agency Input Regarding Electric Resource and Transmission Planning in the

353

Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation  

Broader source: Energy.gov (indexed) [DOE]

Cooperation Among States in the Western Interconnection on Electric Cooperation Among States in the Western Interconnection on Electric Resource Planning and Priorities Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation Among States in the Western Interconnection on Electric Resource Planning and Priorities A description of the requirements for Topic B for the Western Interconnection under the Interconnection-Wide Transmission Planning Initiative, part of the American Recovery and Reinvestment Act. The fundamental purpose of the awards under Topic B is to facilitate dialogue and collaboration among the states in the respective interconnections (or among state agencies, in the Texas Interconnection). Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation Among States in the Western Interconnection on Electric Resource Planning

354

Wisconsin Tribe Performing State-Wide Audits on 'Energy Wasters' |  

Broader source: Energy.gov (indexed) [DOE]

Wisconsin Tribe Performing State-Wide Audits on 'Energy Wasters' Wisconsin Tribe Performing State-Wide Audits on 'Energy Wasters' Wisconsin Tribe Performing State-Wide Audits on 'Energy Wasters' August 24, 2010 - 11:00am Addthis Ho-Chunk Nation is conducting audits throughout Wisconsin to find energy wasters such as decrepit HVAC units. | File photo Ho-Chunk Nation is conducting audits throughout Wisconsin to find energy wasters such as decrepit HVAC units. | File photo Stephen Graff Former Writer & editor for Energy Empowers, EERE What are the key facts? Ho-Chunk Nation received a $392,200 block grant under Recovery Act for energy audits. 30 tribal buildings will be audited across Nation's lands and audit recommendations could save tribes up to 30 percent on energy bills. Drive through Wisconsin, and you're bound to catch a glimpse of one of the

355

E-Print Network 3.0 - aircraft seat cushion Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

was further used to develop design guidelines for a composite... cushion using the principle of quasi-uniform bodyseat contact force distribution. In terms of evenly... -Body...

356

An experimental investigation of a tilt rotor aircraft wake in ground effect  

E-Print Network [OSTI]

: Sktlld dS t' 1, "~Et 18, 6 (1975), pp. 51-673. Hunt, J. C. R. , Poulton, E. C. , and Mumford, J. C. , "The Effects of Wldppl:Sd't*l Bd tldt lt*p*' t, "~Bi1di Environment, 11 (1976), pp. 15-28. 50 VITA gichael Louis Frey III was born January 4, 1957...EXPERIMENTAL INVESTIGATION OF A TILT ROTOR AIRCRAFT WAKE IN GROUND EFFECT A Thesis by MICHAEL LOUIS FREY III Submi. tted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER...

Frey, Michael Louis

1982-01-01T23:59:59.000Z

357

Using a Collaborative Approach to Interconnection-Wide Transmission Analyses  

Broader source: Energy.gov (indexed) [DOE]

Interconnection-Wide Planning in Interconnection-Wide Planning in the Eastern Interconnection EIPC Update for the DOE Electricity Advisory Committee October 20, 2011 David A. Whiteley Presentation Topics * Update on process and structure * Study results so far * Value unlocked * What's next 2 Update on Process and Structure * EIPC - 26 EI Planning Authorities (Planning Coordinators) * Integrate and analyze approved regional plans * Develop interregional expansion scenarios to be studied * Develop interregional transmission expansion options * Consistent with Orders 890 and 1000 * Self-funded * Primary activity is DOE funded interconnection studies project - 2 phases 3 Who are the PAs? * Alcoa Power Generating * American Transmission Co. * Duke Energy Carolinas * Electric Energy Inc. * Entergy *

358

Interconnection-Wide Transmission Planning Initiative - Meeting Calendars |  

Broader source: Energy.gov (indexed) [DOE]

Technology Development » Transmission Planning » Technology Development » Transmission Planning » Recovery Act Interconnection Transmission Planning » Interconnection-Wide Transmission Planning Initiative - Meeting Calendars Interconnection-Wide Transmission Planning Initiative - Meeting Calendars Click on the links below to access each awardee's meeting and events calendar. Eastern Interconnection Topic A Awardee: Eastern Interconnection Planning Collaborative Topic B Awardee: Eastern Interconnection States' Planning Council Western Interconnection Topic A Awardee: Western Electricity Coordinating Council Topic B Awardee: Western Governors' Association Texas Interconnection Topic A and B Awardee: Electric Reliability Council of Texas Electricity Advisory Committee Technology Development Transmission Planning

359

Variability in the Measurement of Hospital-wide Mortality Rates  

Science Journals Connector (OSTI)

...the substantially different results we observed among methods may reflect flaws in the fundamental hypothesis that hospital-wide mortality is a valid metric for the quality of hospital care. Our study also does not rule out the possibility that the estimation of hospital-wide mortality rates on the... This study showed that four commonly used methods to calculate hospitals' risk-adjusted rates of death produced different results. The same hospitals were classified as having higher-than-expected mortality by one method and lower-than-expected mortality by other methods.

Shahian D.M.Wolf R.E.Iezzoni L.I.Kirle L.Normand S.-L.T.

2010-12-23T23:59:59.000Z

360

Mechanism of nonlinear biodynamic response of the human body exposed to whole-body vibration.  

E-Print Network [OSTI]

??When the human body is exposed to mechanical vibration, the resonance frequencies of the frequency response functions, such as apparent mass and transmissibility, decrease with… (more)

Huang, Ya

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Structured Wide-Area Programming: Orc Programming Examples  

E-Print Network [OSTI]

Structured Wide-Area Programming: Orc Programming Examples Jayadev Misra Department of Computer Science University of Texas at Austin http://orc.csres.utexas.edu #12;Some Algorithms · Enumeration;Corresponding Orc program val (x, y) = (Ref(0), Ref(0)) def f1() = Ift(x?

Misra, Jayadev

362

Structured Wide-Area Programming: Orc Programming Language  

E-Print Network [OSTI]

Structured Wide-Area Programming: Orc Programming Language Jayadev Misra Department of Computer Science University of Texas at Austin http://orc.csres.utexas.edu #12;Orc Language · Data Types: Number, List, Record · Pattern Matching; Clausal Definition · Function Closure · Comingling functional and Orc

Misra, Jayadev

363

Overview Orc Notation Examples Structured Wide-Area Programming  

E-Print Network [OSTI]

Overview Orc Notation Examples Structured Wide-Area Programming William Cook, Jayadev Misra, David Kitchin, Adrian Quark Department of Computer Science University of Texas at Austin http://orc.csres.utexas.edu #12;Overview Orc Notation Examples Outline Overview Orc Notation Examples #12;Overview Orc Notation

Misra, Jayadev

364

Electronic materials with a wide band gap: recent developments  

Science Journals Connector (OSTI)

Usually, semiconductors with a band gap Eg 3 eV or larger are called wide band gap materials. Their optical emission can span the whole of the visible spectrum, enabling the development of devices for solid-state lighting. In addition, a large Eg results in a high electrical breakthrough field, which is interesting for high-power electronics.

Klimm, D.

2014-08-29T23:59:59.000Z

365

Instructions on Wide Format Printing Document Setup for Designing Posters  

E-Print Network [OSTI]

Instructions on Wide Format Printing Document Setup for Designing Posters Microsoft Word: (The--give it the project or poster name 2. Open Word 3. On Main Menu, choose "Page Layout" tab 4. In the "Page Setup 10. Start designing your poster 11. When your poster is complete, "Save" it as a Word Document

Bogaerts, Steven

366

System-Wide Emissions Implications of Increased Wind Power Penetration  

E-Print Network [OSTI]

and ramifications of wind power providing 20% of U.S. electricity by 2030.1 Wind energy is advantageous becauseSystem-Wide Emissions Implications of Increased Wind Power Penetration Lauren Valentino,, Viviana of incorporating wind energy into the electric power system. We present a detailed emissions analysis based

Kemner, Ken

367

Wide Bandgap Semiconductors for Power Electronics, Optoelectronics, and Advanced Communications  

E-Print Network [OSTI]

Wide Bandgap Semiconductors for Power Electronics, Optoelectronics, and Advanced Communications with material composition over a range of 0.7 to 5 eV. This factor allows them to be used for optoelectronic. Improvement in growth quality and doping of GaN is needed to improve the performance of optoelectronics

Li, Mo

368

SWARMS: A Sensornet Wide Area Remote Management System  

E-Print Network [OSTI]

Beach, Richard Han Department of Computer Science, University of Colorado, Boulder {charles.gruenwald, anders.hustvedt, aaron.beach, richard.han}@colorado.edu Abstract--Our experiences deploying a wide area wireless sensor network (WSN) in the wildfires of Idaho motivate the need for a software middleware system

Han, Richard Y.

369

Photocell utilizing a wide-bandgap semiconductor material  

DOE Patents [OSTI]

A photocell comprises a p-i-n amorphous silicon structure having a wide bandgap layer adjacent to either the p-type or n-type layer. This structure reduces the absorption of light entering the photocell and the back-diffusion of minority carriers.

Carlson, David E. (Yardley, PA); Williams, Brown F. (Princeton, NJ)

1984-06-05T23:59:59.000Z

370

Aircraft Design  

Science Journals Connector (OSTI)

... his subject is more applied than academic, making it appear to be a designer's handbook rather than a student's text-book. Even then “he falls between two stools ... falls between two stools”, giving neither enough facts and figures for the one, nor fundamental proofs for the other. Nevertheless the subject matter, so far as it goes, ...

1940-03-09T23:59:59.000Z

371

Aircraft icing  

Science Journals Connector (OSTI)

...accretion calculations for a sphere, a swept MS(1)-317 wing, a swept NACA 0012 wing tip, an axisymmetric inlet and a Boeing 737-300 inlet. In 33rd Aerospace Sciences Meeting and Exhibit, Reno, NV, USA, 9{12 January, AIAA paper 95-0755...

2000-01-01T23:59:59.000Z

372

British Aircraft  

Science Journals Connector (OSTI)

... Trident will be more expensive to fly than the alternatives, one of which is the Boeing 727-200.

1967-12-30T23:59:59.000Z

373

Aircraft Production  

Science Journals Connector (OSTI)

... the new ‘Catalina B.P.Y.’ flying boat, the Curtiss ‘Tomahawk’, the Boeing‘Flying Fortress and entirely Canadian built ‘Hurricane’ are now being received in quantities, ...

1941-05-03T23:59:59.000Z

374

Aircraft evolution  

Science Journals Connector (OSTI)

... is comparable with the chance that a tornado sweeping through a junkyard might assemble a Boeing 747 from the materials therein". The simile is glib, meretricious and deceptive. No ... from debris.

THOMAS H. JUKES

1982-02-18T23:59:59.000Z

375

Media Messages and Womens' Body Perceptions in Egypt.  

E-Print Network [OSTI]

??This study explores the association between media exposure and women’s body perceptions in Egypt. The thin ideal perpetuated through the media, eating disorders and body… (more)

Ragab, Shaima

2007-01-01T23:59:59.000Z

376

Medical Sequencing at the extremes of Human Body Mass  

E-Print Network [OSTI]

Medical Sequencing at the Extremes of Human Body Mass Nadavcandidate genes and the extremes of human body mass.especially in the population extremes of a given phenotype

2006-01-01T23:59:59.000Z

377

Numerical modeling of air?to?sea transmission of light aircraft noise  

Science Journals Connector (OSTI)

Recent experiments at SIO have shown that the acoustic signature of a light aircraft can be detected by sensors in the water column as well as buried in the underlying sediment and a method for extracting the sound speed and attenuation from this Doppler shifted signal has been proposed. To test the accuracy of this geoacoustic inversion technique a numerical model of the air?water?sediment acoustic propagation including the effects of a high?speed airborne source has been developed based on the spectral method. Simulated acoustic data have been generated representing an aircraft flying over a microphone in the atmosphere a vertical line array in the ocean and a hydrophone buried 1?m deep in the sediment. The results of the geoacoustic inversion for sound speed and attenuation are compared to the known input parameter values of the model giving a sense of the relative errors that may be expected when applying the technique to experimental data. [Work supported by ONR.

2003-01-01T23:59:59.000Z

378

An evaluation of forecasting methods for aircraft non-routine maintenance material demand  

Science Journals Connector (OSTI)

Aircraft maintenance can be divided into routine and non-routine activities. Material demand associated with non-routine maintenance is typically intermittent or lumpy: it has a large variance in frequency and quantity. Consequently, this type of demand is hard to predict. This paper introduces a method to collect time series datasets for aircraft non-routine maintenance material demand. Non-routine material consumption is linked to scheduled maintenance tasks to gain insight in demand patterns. A structural part selection of the Boeing 737NG fleet of an aviation partner has been sampled to generate various test cases. Subsequently, various forecasting methods are applied to these test cases and evaluated using various accuracy metrics. For the small time series datasets associated with non-routine maintenance, exponentially weighted moving average (EMA) outperformed smoothing methods such as Croston's method (CR) and the Syntetos-Boylan approximation (SBA). To validate the practical applicability of EMA for non-routine maintenance material demand, the method has been applied and verified in the prediction of actual demand for a separate maintenance C-check.

Maarten Zorgdrager; Wim J.C. Verhagen; Richard Curran

2014-01-01T23:59:59.000Z

379

Metric assessment of subjective annoyance due to low frequency aircraft noise  

Science Journals Connector (OSTI)

A low frequency noise study was conducted at the Pennsylvania State University to investigate human response to the low frequency content of aviation noise. Metric assessment included level based and loudness metrics including time?varying loudness. Current predictive noise models and metrics may underestimate the impact of low?frequency noise produced by aviation noise. Assessing the role of low frequency noise on human response will facilitate understanding how this type of noise can impact communities. Indoor recordings of aircraft arrivals and departures at Washington Dulles International Airport made in 2004 were used to assess subjective noise annoyance. These recordings and low?frequency variants of these recordings were reproduced for subjects through the Gulfstream Supersonic Acoustic Signature Simulator II (SASS II); the signatures were then rated for annoyance. Subjective judgments were statistically analyzed and compared against objective metrics that were calculated for each signature. Results are shown that all things being equal higher levels of low?frequency content in aircraft noise can result in increased annoyance in subjects. The C?weighted sound exposure level was found to correlate well with the subjective annoyance response.

Kathleen Hodgdon; Matthew L. Nickerson; Anthony A. Atchley; Thomas Gabrielson

2008-01-01T23:59:59.000Z

380

High-speed rail with emerging automobiles and aircraft can reduce environmental impacts in California's future  

Science Journals Connector (OSTI)

Sustainable mobility policy for long-distance transportation services should consider emerging automobiles and aircraft as well as infrastructure and supply chain life-cycle effects in the assessment of new high-speed rail systems. Using the California corridor, future automobiles, high-speed rail and aircraft long-distance travel are evaluated, considering emerging fuel-efficient vehicles, new train designs and the possibility that the region will meet renewable electricity goals. An attributional per passenger-kilometer-traveled life-cycle inventory is first developed including vehicle, infrastructure and energy production components. A consequential life-cycle impact assessment is then established to evaluate existing infrastructure expansion against the construction of a new high-speed rail system. The results show that when using the life-cycle assessment framework, greenhouse gas footprints increase significantly and human health and environmental damage potentials may be dominated by indirect and supply chain components. The environmental payback is most sensitive to the number of automobile trips shifted to high-speed rail, and for greenhouse gases is likely to occur in 20–30 years. A high-speed rail system that is deployed with state-of-the-art trains, electricity that has met renewable goals, and in a configuration that endorses high ridership will provide significant environmental benefits over existing modes. Opportunities exist for reducing the long-distance transportation footprint by incentivizing large automobile trip shifts, meeting clean electricity goals and reducing material production effects.

Mikhail Chester; Arpad Horvath

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Estimating Hurricane Wind Structure in the Absence of Aircraft Reconnaissance JAMES P. KOSSIN,* JOHN A. KNAFF, HOWARD I. BERGER,* DERRICK C. HERNDON,*  

E-Print Network [OSTI]

estimates the entire two-dimensional surface wind field inside a storm-centered disk with a radius of 182 km- sondes (Hock and Franklin 1999) released from Gulf- stream-IV jet aircraft that routinely fly aircraft flying in the northwest Pacific basin (Wu et al. 2005). For reasons of safety, these small high

Kossin, James P.

382

Joining of porous silicon carbide bodies  

DOE Patents [OSTI]

A method of joining two porous bodies of silicon carbide is disclosed. It entails utilizing an aqueous slip of a similar silicon carbide as was used to form the porous bodies, including the sintering aids, and a binder to initially join the porous bodies together. Then the composite structure is subjected to cold isostatic pressing to form a joint having good handling strength. Then the composite structure is subjected to pressureless sintering to form the final strong bond. Optionally, after the sintering the structure is subjected to hot isostatic pressing to further improve the joint and densify the structure. The result is a composite structure in which the joint is almost indistinguishable from the silicon carbide pieces which it joins.

Bates, Carl H. (Worcester, MA); Couhig, John T. (Worcester, MA); Pelletier, Paul J. (Thompson, CT)

1990-05-01T23:59:59.000Z

383

MATERNAL BODY COMPOSITION LATE IN PREGNANCY AND INFANT BODY COMPOSITION AT BIRTH  

E-Print Network [OSTI]

late in pregnancy and neonatal body composition at birth. The secondary aim of this study was to investigate the association between maternal trimester-specific GWG and neonatal body composition at birth. Methods: Healthy pregnant women with a pre-pregnancy...

Li, Shengqi

2013-12-31T23:59:59.000Z

384

Many-body interactions and nuclear structure  

E-Print Network [OSTI]

This article presents several challenges to nuclear many-body theory and our understanding of the stability of nuclear matte r. In order to achieve this, we present five different cases, starting with an idealized toy model. These cases expose problems that need to be understood in order to match recent advances in nuclear theory with current experimental programs in low-energy nuclear physics. In particular, we focus on our current understanding, or lack thereof, of many-body forces, and how they evolve as functions of the number of particles . We provide examples of discrepancies between theory and experiment and outline some selected perspectives for future research directions.

M. Hjorth-Jensen; D. J. Dean; G. Hagen; S. Kvaal

2010-03-07T23:59:59.000Z

385

Two wide-angle imaging neutral-atom spectrometers (TWINS)  

SciTech Connect (OSTI)

Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) is a revolutionary new mission designed to stereoscopically image the magnetosphere in charge exchange neutral atoms for the first time. The authors propose to fly two identical TWINS instruments as a mission of opportunity on two widely-spaced high-altitude, high-inclination US Government spacecraft. Because the spacecraft are funded independently, TWINS can provide a vast quantity of high priority science observations (as identified in an ongoing new missions concept study and the Sun-Earth Connections Roadmap) at a small fraction of the cost of a dedicated mission. Because stereo observations of the near-Earth space environs will provide a particularly graphic means for visualizing the magnetosphere in action, and because of the dedication and commitment of the investigator team to the principles of carrying space science to the broader audience, TWINS will also be an outstanding tool for public education and outreach.

McComas, D.J. [Los Alamos National Lab., NM (United States)] [Los Alamos National Lab., NM (United States); Blake, B. [Aerospace Corp., CA (United States)] [Aerospace Corp., CA (United States); Burch, J. [Southwest Research Inst., San Antonio, TX (United States)] [and others] [Southwest Research Inst., San Antonio, TX (United States); and others

1998-11-01T23:59:59.000Z

386

Implementing wide baseline matching algorithms on a graphics processing unit.  

SciTech Connect (OSTI)

Wide baseline matching is the state of the art for object recognition and image registration problems in computer vision. Though effective, the computational expense of these algorithms limits their application to many real-world problems. The performance of wide baseline matching algorithms may be improved by using a graphical processing unit as a fast multithreaded co-processor. In this paper, we present an implementation of the difference of Gaussian feature extractor, based on the CUDA system of GPU programming developed by NVIDIA, and implemented on their hardware. For a 2000x2000 pixel image, the GPU-based method executes nearly thirteen times faster than a comparable CPU-based method, with no significant loss of accuracy.

Rothganger, Fredrick H.; Larson, Kurt W.; Gonzales, Antonio Ignacio; Myers, Daniel S.

2007-10-01T23:59:59.000Z

387

Two wide-angle imaging neutral-atom spectrometers  

SciTech Connect (OSTI)

The Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) mission provides a new capability for stereoscopically imaging the magnetosphere. By imaging the charge exchange neutral atoms over a broad energy range (1 < E , {approximately} 100 keV) using two identical instruments on two widely-spaced high-altitude, high-inclination spacecraft, TWINS will enable the 3-dimensional visualization and the resolution of large scale structures and dynamics within the magnetosphere for the first time. These observations will provide a leap ahead in the understanding of the global aspects of the terrestrial magnetosphere and directly address a number of critical issues in the ``Sun-Earth Connections`` science theme of the NASA Office of Space Science.

McComas, D.J.

1997-12-31T23:59:59.000Z

388

A New Wide Range Equation of State for Helium-4  

E-Print Network [OSTI]

A NEW WIDE RANGE EQUATION OF STATE FOR HELIUM-4 A Dissertation by DIEGO ORLANDO ORTIZ VEGA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR... Copyright 2013Diego Orlando Ortiz Vega ii ABSTRACT A multiparametric and fundamental equation of state is presented for the fluid thermodynamic properties of helium. The equation is valid for temperatures from the ?- line (~2.17 K) to 1500 K...

Ortiz Vega, Diego O

2013-08-01T23:59:59.000Z

389

Plant-Wide Energy Conservation Program Yields Impressive Results  

E-Print Network [OSTI]

"PLANT-WIDE ENERGY CONSERVATION PROGRAM YIELDS IMPRESSIVE RESULTS" Robert P. Adlkes Alan J. Zupko, P.E. Joseph W. Adams Teledyne Continental Motors Roy F. Weston, Inc. Bettcher Manufacturing Corp. Muskegon, Michigan West Chester, Pennsylvania... distribution/condensate return systems during the summer months since 1977 and have saved approximately 70,000 MBtu (1) annually. In September 1977, IPD retained Roy F. Weston, Inc. of West Chester, Pennsylvania to provide an in-depth survey of energy...

Adlkes, R. P.; Zupko, A. J.; Adams, J. W.

1980-01-01T23:59:59.000Z

390

Horizontal film balance having wide range and high sensitivity  

DOE Patents [OSTI]

A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed.

Abraham, B.M.; Miyano, K.; Ketterson, J.B.

1981-03-05T23:59:59.000Z

391

Horizontal film balance having wide range and high sensitivity  

DOE Patents [OSTI]

A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed. 5 figs.

Abraham, B.M.; Miyano, K.; Ketterson, J.B.

1983-11-08T23:59:59.000Z

392

Horizontal film balance having wide range and high sensitivity  

DOE Patents [OSTI]

A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed.

Abraham, Bernard M. (Oak Park, IL); Miyano, Kenjiro (Downers Grove, IL); Ketterson, John B. (Evanston, IL)

1983-01-01T23:59:59.000Z

393

Wide swath imaging spectrometer utilizing a multi-modular design  

DOE Patents [OSTI]

A wide swath imaging spectrometer utilizing an array of individual spectrometer modules in the telescope focal plane to provide an extended field of view. The spectrometer modules with their individual detectors are arranged so that their slits overlap with motion on the scene providing contiguous spatial coverage. The number of modules can be varied to take full advantage of the field of view available from the telescope.

Chrisp, Michael P. (Danville, CA)

2010-10-05T23:59:59.000Z

394

Air-Conditioning Systems Simulate World-Wide Climates  

Science Journals Connector (OSTI)

Air-Conditioning Systems Simulate World-Wide Climates ... WEATHER conditions equivalent to those in any part of the world can be simulated in a four-compartment test box set up at State College, Penna., by the U. S. Department of Agriculture's Regional Pasture Research Laboratory in its work to develop better pastures. ... Three heavily insulated doors permit access to each compartment; an inner door keeps conditioned air in the box from rushing out when the main door is opened. ...

1941-10-25T23:59:59.000Z

395

Economic Impacts of a Wide Area Release of Anthrax  

SciTech Connect (OSTI)

This analysis explores economic impacts that might result from a wide-area release of anthrax. The intent is not to provide a quantitative analysis of such a disaster, but to: 1. Define the general categories of economic impacts that the region should be concerned about; and, 2. Explore what types of private sector businesses or industries, if any, may have the greatest impact on speeding the economic recovery of the region.

Judd, Kathleen S.; Olson, Jarrod; Stein, Steven L.; Lesperance, Ann M.

2009-05-29T23:59:59.000Z

396

Supplement Analysis of the 2005 Site-Wide EIS  

Broader source: Energy.gov (indexed) [DOE]

U.S. Department of Energy U.S. Department of Energy National Nuclear Security Administration Livermore Site Office Livermore, California SUPPLEMENT ANALYSIS of the 2005 Final Site-wide Environmental Impact Statement For Continued Operation of Lawrence Livermore National Laboratory Volume I: Main Report AUGUST 2011 DOE/EIS-0348-SA-03 i CONTENTS NOTATION.............................................................................................................................. v SUMMARY...........................................................................................................................S-1 1.0 INTRODUCTION ......................................................................................................... 1-1 1.1 Purpose and Need............................................................................................

397

Overcoming mixed waste management obstacles - A company wide approach  

SciTech Connect (OSTI)

The dual regulation of mixed waste by the Nuclear Regulatory Commission and the Environmental Protection Agency has significantly complicated the treatment, storage and disposal of this waste. Because of the limited treatment and disposal options available, facilities generating mixed waste are also being forced to acquire storage permits to meet requirements associated with the Resource Conservation and Recovery Act. Due to the burdens imposed by the regulatory climate, Entergy Operations has undertaken a proactive approach to managing its mixed waste. Their approach is company wide and simplistic in nature. Utilizing the peer groups to develop strategies and a company wide procedure for guidance on mixed waste activities, they have focused on areas where they have the most control and can achieve the greatest benefits from their efforts. A key aspect of the program includes training and employee awareness regarding mixed waste minimization practices. In addition, Entergy Operations is optimizing the implementation of regulatory provisions that facilitate more flexible management practices for mixed waste. This presentation focuses on the team approach to developing mixed waste managements programs and the utilization of innovative thinking and planning to minimize the regulatory burdens. It will also describe management practices and philosophies that have provided more flexibility in implementing a safe and effective company wide mixed waste management program.

Buckley, R.N. [Entergy Operations, Inc., Jackson, MS (United States)

1996-10-01T23:59:59.000Z

398

COLLISIONAL EVOLUTION OF ULTRA-WIDE TRANS-NEPTUNIAN BINARIES  

SciTech Connect (OSTI)

The widely separated, near-equal mass binaries hosted by the cold classical Kuiper Belt are delicately bound and subject to disruption by many perturbing processes. We use analytical arguments and numerical simulations to determine their collisional lifetimes given various impactor size distributions and include the effects of mass loss and multiple impacts over the lifetime of each system. These collisional lifetimes constrain the population of small (R {approx}> 1 km) objects currently residing in the Kuiper Belt and confirm that the size distribution slope at small size cannot be excessively steep-likely q {approx}< 3.5. We track mutual semimajor axis, inclination, and eccentricity evolution through our simulations and show that it is unlikely that the wide binary population represents an evolved tail of the primordially tight binary population. We find that if the wide binaries are a collisionally eroded population, their primordial mutual orbit planes must have preferred to lie in the plane of the solar system. Finally, we find that current limits on the size distribution at small radii remain high enough that the prospect of detecting dust-producing collisions in real time in the Kuiper Belt with future optical surveys is feasible.

Parker, Alex H. [Department of Astronomy, University of Victoria, Victoria BC (Canada); Kavelaars, J. J., E-mail: alexhp@uvic.ca [Herzberg Institute of Astrophysics, National Research Council of Canada, Saanich BC (Canada)

2012-01-10T23:59:59.000Z

399

Soft Body Locomotion Georgia Institute of Technology  

E-Print Network [OSTI]

point of contact should remain static, slide, or lift away from the floor. Our system can automatically a variety of intuitive controls such as moving a point on the character, specify- ing the center of mass@cc.gatech.edu e-mail: karenliu@cc.gatech.edu Figure 1: Four alphabetic soft body characters perform different

Turk, Greg

400

Sample return missions to minor bodies  

Science Journals Connector (OSTI)

......Minor bodies such as comets and asteroids are thought...planets, is that if a landing is necessary to collect...for example. However, landing on and manoeuvring around...The difficulties with landing and sample collection...return missions to a comet (the NASA Stardust mission......

Mark Burchell; Mark Price; Penelope Wozniakiewicz; John Bridges; Anton Kearsley; Monica Grady; Simon Green; Natalie Starkey; Paula Lindgren; Takaaki Noguchi

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

OPTIMAL INSULATION DISTRIBUTION OVER A CONDUCTING BODY  

Science Journals Connector (OSTI)

......research-article Articles OPTIMAL INSULATION DISTRIBUTION OVER A CONDUCTING BODY...conducted. Over the rest a given amount of insulation is assumed to be spread. Its pointwise...surroundings. Observe that thickening of the insulation at one point involves thinning elsewhere......

MICHAEL BETWICH

1983-02-01T23:59:59.000Z

402

Additional Verification Bodies Now Available for SEP  

Broader source: Energy.gov [DOE]

Superior Energy Performance (SEP) recognizes industrial facilities that demonstrate energy management excellence and sustained energy savings. Third-party verification using an ANSI-ANAB Accredited Verification Body offers robust, independent confirmation of a facility's conformance to ISO 50001 and improved energy performance—providing accurate energy numbers that energy managers can present with confidence to management and other stakeholders.

403

Light Bodies: Exploring Interactions with Responsive Lights  

E-Print Network [OSTI]

reinterpretation of street lighting. Before fixed infrastructure illuminated cities at night, people carried Urban street lighting today is a networked, fixed infrastructure that relies on the electrical grid. WeLight Bodies: Exploring Interactions with Responsive Lights Susanne Seitinger MIT Media Laboratory

Hunt, Galen

404

Magnetism of Celestial Bodies and Gravitation  

Science Journals Connector (OSTI)

... same conclusion is valid if the field of force inside the body is given by Schwarzschild‘s line element for a spherical incompressible fluid. This can be easily checked by ... between these volumes, the supplementary energy obtained in this way is not negligible. In Schwarzschild‘s case, with a as the Euclidean radius of the sphere, we get7: ...

J. MARIANI

1948-10-16T23:59:59.000Z

405

Three-body forces and the trinucleons  

SciTech Connect (OSTI)

Three-body forces are discussed in the context of classical, atomic, solid-state and nuclear physics. The basic theoretical ingredients used in the construction of such forces are reviewed. Experimental evidence for three-nucleon forces and an overview of the three-nucleon bound states are presented. 53 refs., 9 figs.

Friar, J.L.

1987-01-01T23:59:59.000Z

406

The Lost Soul of the Body Politic  

E-Print Network [OSTI]

conception of the state changed from one of a natural organic unity of diverse corporate members to a consent-based compact among atomized individuals. This change can be traced in the Body Politic metaphor of four authors: John of Salisbury, Christine de...

Chupp, Jesse

2012-07-16T23:59:59.000Z

407

PC(Note PC catalogue) (Machine body)  

E-Print Network [OSTI]

Specifications PC PC Code Image Brand Model PC Kingsoft Office Plus () ESET SMART () Kingsoft Office Microsoft Wireless LAN Remarks Specifications PC PC Code Image Brand Model K012 Fujitsu LOOK FMVLR7YN24 Core2DUO Weight (Machine body) Accessory LAN Wireless LAN Remarks Specifications PC PC Code Image Brand

Katsumoto, Shingo

408

International Pacific Air and Space Technology Conference and Aircraft Symposium, 29th, Gifu, Japan, Oct. 7-11, 1991, Proceedings  

SciTech Connect (OSTI)

Various papers on air and space technology are presented. Individual topics addressed include: media selection analysis: implications for training design, high-speed challenge for rotary wing aircraft, high-speed VSTOL answer to congestion, next generation in computational aerodynamics, acrobatic airship 'Acrostat', ducted fan VTOL for working platform, Arianespace launch of Lightsats, small particle acceleration by minirailgun, free-wake analyses of a hovering rotor using panel method, update of the X-29 high-angle-of-attack program, economic approach to accurate wing design, flow field around thick delta wing with rounded leading edge, aerostructural integrated design of forward-swept wing, static characteristics of a two-phase fluid drop system, simplfied-model approach to group combustion of fuel spray, avionics flight systems for the 21st century. Also discussed are: Aircraft Command in Emergency Situations, spectrogram diagnosis of aircraft disasters, shock interaction induced by two hemisphere-cylinders, impact response of composite UHB propeller blades, high-altitude lighter-than-air powered platform, integrated wiring system, auxiliary power units for current and future aircraft, Space Shuttle Orbiter Auxiliary Power Unit status, numerical analysis of RCS jet in hypersonic flights, energy requirements for the space frontier, electrical system options for space exploration, aerospace plane hydrogen scramjet boosting, manual control of vehicles with time-varying dynamics, design of strongly stabilizing controller, development of the Liquid Apogee Propulsion System for ETS-VI.

Not Available

1991-01-01T23:59:59.000Z

409

Method for the assessment of airborne off-target pesticide spray concentrations due to aircraft wing-tip vortex  

E-Print Network [OSTI]

that spherical spray droplets are transported by a two dimensional parametric representation of a spray-engulfing aircraft wing-tip vortex pair. Two distinctive flow regions were considered for the spray-vortex dynamics. The first occurs in the vicinity...

Oliva, Sergio Eduardo

2012-06-07T23:59:59.000Z

410

Counter-rotating vortex patches in shear: a model of the effect of wind shear on aircraft trailing vortices  

Science Journals Connector (OSTI)

...significantly a following passenger-containing aircraft and cause an accident. For example, the vortex wake of a Boeing 747 can rotate a Boeing 737 through 45 . This problem is called the trailing-vortex hazard, and since the trailing vortices can...

2002-01-01T23:59:59.000Z

411

Capturing the impact of fuel price on jet aircraft operating costs with Leontief technology and econometric models  

Science Journals Connector (OSTI)

Investigation of the airline response to a fuel price increase is in effect an investigation of the role of variable interactions in aircraft cost models. We examine the impact of fuel price on aircraft costs and airline operational strategies by developing two classes of operating cost models for jet aircraft and comparing the results. The translog operating cost model is a flexible functional form that provides a detailed representation of the empirical relationship between fuel cost and operating cost, allowing for substitution, scale, aircraft age, and variable interactions to be captured. The simpler Leontief model assumes that inputs of a cost model must be used in fixed proportions regardless of their prices. While it does not capture variable interactions, the Leontief model is more transparent, requires fewer inputs, and allows the contribution of a single factor, such as fuel price, to operating cost to be more easily isolated. An analysis of the translog operating cost model reveals that as fuel price increases, airlines will take steps to use fuel more efficiently by leveraging other inputs; a comparison of the translog and the Leontief technology models, however, show that the potential for this supplier input substitution for fuel is rather modest. By building the two operating cost models and comparing their predictions, we illustrate a method to determine the prediction potential of a Leontief technology model and assess the importance of input substitution at the vehicle level.

Megan Smirti Ryerson; Mark Hansen

2013-01-01T23:59:59.000Z

412

Application of dynamic programming approach to aircraft take-off in a N. D. Botkin and V. L. Turova  

E-Print Network [OSTI]

-off, because quick changes of the wind velocity occur at relatively low altitudes. In this paper, a simplified relative velocity V, the relative path inclination , the horizontal distance x, and the altitude h: m V components of the wind velocity, g is the acceleration of gravity, m the aircraft mass, the thrust

Turova, Varvara

413

Complementarity problems for electro-neutral charged bodies  

E-Print Network [OSTI]

Solutions to the complementarity problem constructed in [1], generally, possess non-zero total charge. In natural sciences, bodies possessing non-zero total charge (ions and similar object) are considered as specific objects. Bodies possessing zero total charge (electro-neutral bodies) are considered as general case objects. This paper presents a solution to the complementarity problem for electro-neutral bodies. The solution is constructed under the condition that the volumes of the bodies are small.

A. A. Kolpakov; A. G. Kolpakov

2012-07-21T23:59:59.000Z

414

DOE-STD-3014-96; DOE Standard Accident Analysis For Aircraft Crash Into Hazardous Facilities  

Broader source: Energy.gov (indexed) [DOE]

DOE STANDARD DOE STANDARD October 1 996 Reaffirmation May 2006 ACCIDENT CRASH INTO ANALYSIS HAZARDOUS FACILITIES U.S. Department of Energy Washington, DC 20585 AREA SAFT DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. FOR AIRCRAFT This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (423) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650. Order No. DE97000162 DOE-STD-3014-96 iii TABLE OF CONTENTS PARAGRAPH PAGE FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

415

Wide-band heterodyne receiver development for effluent measurements  

SciTech Connect (OSTI)

Oak Ridge National Laboratory (ORNL) has been developing advanced infrared heterodyne receivers for plasma diagnostics in fusion reactors for over 20 years. Passive heterodyne radiometry in the LWIR region of the spectrum has historically been restricted by HgCdTe (MCT) detector technology to receiver bandwidths of only 2 GHz. Given typical atmospheric line widths of approximately 3 GHz, a CO{sub 2} (or isotope) laser local oscillator with an average line spacing of 50 GHz, and an MCT detector, only chemical species whose absorptions fall directly on top of laser lines can be measured. Thus, with traditional narrow-band heterodyne radiometry, much of the LWIR spectrum is missed and the less complex direct detection DIAL has been the preferred technique in remote sensing applications. Wide-band heterodyne receivers offer significant improvements in remote measurement capability. Progress at the Institute for Microstructural Sciences (IMS) at National Research Council of Canada and at ORNL in wide-band quantum-well infrared photodetectors (QIPs) and receivers is significantly enhancing the bandwidth capabilities of heterodyne radiometers. ORNL recently made measurements in the lab using QWIPs developed at IMS that demonstrate heterodyne quantum efficiencies of 5% with a heterodyne bandwidth of 7 GHz. The path forward indicates that > 10% heterodyne quantum efficiencies and 30-GHz bandwidths are achievable with current QWIP technology. With a chopped, 30-GHz passive heterodyne receiver, a much larger portion of the LWIR spectrum can now be covered. One potential advantage of wide-band heterodyne receivers for effluent measurements is to dramatically reduce the number of laser lines needed to characterize and distinguish multiple chemical species of interest. In the following paper, the authors discuss this and other implications of these new technologies to the characterization of effluents using both passive heterodyne radiometry and thermo-luminescence.

Hutchinson, D.P.; Richards, R.K.; Simpson, M.L.; Bennett, C.A. [Oak Ridge National Lab., TN (United States); Liu, H.C.; Buchanan, M. [National Research Council of Canada (Canada)

1998-05-01T23:59:59.000Z

416

Development of Autonomous Magnetometer Rotorcraft For Wide Area Assessment  

SciTech Connect (OSTI)

Large areas across the United States and internationally are potentially contaminated with unexploded ordinance (UXO), with some ranges encompassing tens to hundreds of thousands of acres. Technologies are needed which will allow for cost effective wide area scanning with (1) near 100% coverage and (2) near 100% detection of subsurface ordnance or features indicative of subsurface ordnance. The current approach to wide area assessment is a multi-level one, in which medium - altitude fixed wing optical imaging is used for an initial site assessment. This assessment is followed with low altitude manned helicopter based magnetometry. Subsequent to this wide area assessment targeted surface investigations are performed using either towed geophysical sensor arrays or man portable sensors. In order to be an effective tool for small UXO detection, the sensing altitude for magnetic site investigations needs to be on the order of 1 to 3 meters. These altitude requirements mean that manned helicopter surveys will generally only be feasible in large, open and relatively flat terrains. While such surveys are effective in mapping large areas relatively fast there are substantial mobilization/demobilization, staffing and equipment costs associated with these surveys, resulting in costs of approximately $100-$150/acre. In addition, due to the low altitude there are substantial risks to pilots and equipment. Surface towed arrays provide highresolution maps but have other limitations, e.g. in their ability to navigate rough terrain effectively. Thus there is a need for other systems, which can be used for effective data collection. An Unmanned Aerial Vehicle (UAV) magnetometer platform is an obvious alternative. The motivation behind such a system is that it reduces risk to operators, is lower in initial and Operational and Maintenance (O&M) costs (and can thus potentially be applied to smaller sites) and has the potential of being more effective in terms of detection and possibly characterization (through the use of dynamic acquisition, i.e. survey mission in-flight reprioritization).

Mark D. McKay; Matthew O. Anderson

2011-08-01T23:59:59.000Z

417

Wide band cryogenic ultra-high vacuum microwave absorber  

DOE Patents [OSTI]

An absorber wave guide assembly for absorbing higher order modes of microwave energy under cryogenic ultra-high vacuum conditions, that absorbs wide-band multi-mode energy. The absorber is of a special triangular shape, made from flat tiles of silicon carbide and aluminum nitride. The leading sharp end of the absorber is located in a corner of the wave guide and tapers to a larger cross-sectional area whose center is located approximately in the center of the wave guide. The absorber is relatively short, being of less height than the maximum width of the wave guide.

Campisi, Isidoro E. (Newport News, VA)

1992-01-01T23:59:59.000Z

418

Widely tunable femtosecond solitonic radiation in photonic crystal fiber cladding  

SciTech Connect (OSTI)

We report on a means to generate tunable ultrashort optical pulses. We demonstrate that dispersive waves generated by solitons within the small-core features of a photonic crystal fiber cladding can be used to obtain femtosecond pulses tunable over an octave-wide spectral range. The generation process is highly efficient and occurs at the relatively low laser powers available from a simple Ti:sapphire laser oscillator. The described phenomenon is general and will play an important role in other systems where solitons are known to exist.

Peng Jiahui; Sokolov, Alexei V. [Department of Physics and Institute for Quantum Studies, Texas A and M University, College Station, Texas 77843 (United States); Benabid, F.; Light, P. S.; Couny, F. [Department of Physics, University of Bath, Bath, BA2 7AY (United Kingdom); Biancalana, F. [School of Physics and Astronomy, Cardiff University, CF24 3 AA Cardiff (United Kingdom); Roberts, P. J. [DTU Fotonik, Danish Technical University, Lyngby, DK-2800 (Denmark)

2010-03-15T23:59:59.000Z

419

Oppenheimer Gives Plan for World-Wide Atomic Research  

Science Journals Connector (OSTI)

Oppenheimer Gives Plan for World-Wide Atomic Research ... A PLAN for research and development of atomic energy depending upon close international cooperation and "complete and absolute openness" presented by J. Robert Oppenheimer to the United Nations Atomic Energy Commission has been made public. ... In an effort to list the problems occurring in the field with relation to their urgency, importance, and difficulty, Dr. Oppenheimer enumerated six areas of development, attempting to indicate those which were likely to lead to benefits in the future. ...

1947-06-23T23:59:59.000Z

420

Wide band cryogenic ultra-high vacuum microwave absorber  

DOE Patents [OSTI]

An absorber waveguide assembly for absorbing higher order modes of microwave energy under cryogenic ultra-high vacuum conditions, that absorbs wide-band multi-mode energy. The absorber is of a special triangular shape, made from flat tiles of silicon carbide and aluminum nitride. The leading sharp end of the absorber is located in a corner of the waveguide and tapers to a larger cross-sectional area whose center is located approximately in the center of the wave guide. The absorber is relatively short, being of less height than the maximum width of the waveguide. 11 figs.

Campisi, I.E.

1992-05-12T23:59:59.000Z

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Effect of bulk viscosity in low density, hypersonic blunt body flows  

SciTech Connect (OSTI)

A computational fluids dynamics scheme is presented to solve the unsteady Thin-Layer Navier-Stokes (TLNS) equations over a blunt body at high altitude, high Mach number atmospheric reentry flow conditions. This continuum approach is directed to low density hypersonic flows by accounting for non-zero bulk viscosity effects in near frozen flow conditions. The TLNS equations are solved over an axisymmetric body at zero incidence relative to the free stream. The time dependent axisymmetric governing equations are transformed into a computational plane, then cast into weak conservative form and solved using a first-order fully implicit scheme in time with second-order flux vector splitting for spatial derivatives. The physical domain is defined over representative sphere and sphere/cone geometries using a body-fitted clustered algebraic grid within a fixed domain (i.e., shock capturing). At the present time, nonequilibrium thermo-chemistry effects are not modeled. Catalytic wall, ionization and radiation effects are also excluded from the current analysis. However, the significant difference from previous studies is the inclusion of the capability to model non-zero bulk viscosity effects. The importance of bulk viscosity is reviewed and blunt body flow field solutions are presented to illustrate the potential contribution of this phenomena at high altitude hypersonic conditions. The current technique is compared with experimental data and other approximate continuum solutions. A variety of test cases are also presented for a wide range of free stream Mach conditions. 18 refs., 42 figs.

Rutledge, W.H. (Sandia National Labs., Albuquerque, NM (USA)); Hoffmann, K.A. (Texas Univ., Austin, TX (USA))

1991-01-01T23:59:59.000Z

422

Pindzola FourBody NISE Computation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Pindzola FourBody NISE Computation Pindzola FourBody NISE Computation NISE Allows Massively Parallel Calculation of Complete Photofragmentation of the Li Atom PindzolaLiFragmentation.gif NISE grant has allowed massively parallel calculations for the complete photofragmentation of the Li atom. Results for energy and angle differential cross sections at a photon energy of 300 eV are in direct support of planned reaction microscope experiments using the free electron laser at DESY in Hamburg, Germany. The work used NERSC's CRAY XE6 supercomputer, which was found to run the codes twice as fast as the CRAY XT5. Work done by James Colgan (LANL) and M.S. Pindzola (Auburn University) Publication (may require a subscription): "Angular Distributions for the Complete Photofragmentation of the Li Atom," Phys. Rev. Lett. 108, 053001

423

Two-body problem in graphene  

Science Journals Connector (OSTI)

We study the problem of two Dirac particles interacting through nonrelativistic potentials and confined to a two-dimensional sheet, which is the relevant case for graphene layers. The two-body problem cannot be mapped into that of a single particle, due to the nontrivial coupling between the center-of-mass and the relative coordinates, even in the presence of central potentials. We focus on the case of zero total momentum, which is equivalent to that of a single particle in a Sutherland lattice. We show that zero-energy states induce features such as discontinuities in the relative wave function, for particles interacting through a step potential, and a concentration of relative density near the classical turning point, if particles interact via a Coulomb potential. In the latter case we also find that the two-body system becomes unstable above a critical coupling. These phenomena may have bearing on the nature of strong-coupling phases in graphene.

J. Sabio; F. Sols; F. Guinea

2010-01-27T23:59:59.000Z

424

Variational Methods and the Nuclear Many-Body Problem  

Science Journals Connector (OSTI)

The general form of the energy of the ground state of a many-fermion system is shown to be exactly of the form proposed by Brueckner and Bethe, without approximation. In a variational treatment, if the trial wave function is picked containing only pair correlations, together with all possible unlinked pairs, it is described by a two-body excitation matrix ?m1m2|A|p1p2?. Variation of this matrix in the Ritz-Rayleigh principle yields a set of integral equations of the scattering type for the matrix A. Hole-state energies are given self-consistently in terms of the matrix A, but particle-state energies are Hartree-Fock energies. This may be corrected for by widely enlarging the class of terms admitted into the wave function. If the approximation is then made of omitting a class of terms, defined as cross-linked clusters in ??|H|??, the particle-state energies are easily renormalized. Variation then leads to an infinite hierarchy of integral equations.

R. Brout

1958-09-01T23:59:59.000Z

425

Communication: Random phase approximation renormalized many-body perturbation theory  

SciTech Connect (OSTI)

We derive a renormalized many-body perturbation theory (MBPT) starting from the random phase approximation (RPA). This RPA-renormalized perturbation theory extends the scope of single-reference MBPT methods to small-gap systems without significantly increasing the computational cost. The leading correction to RPA, termed the approximate exchange kernel (AXK), substantially improves upon RPA atomization energies and ionization potentials without affecting other properties such as barrier heights where RPA is already accurate. Thus, AXK is more balanced than second-order screened exchange [A. Grüneis et al., J. Chem. Phys. 131, 154115 (2009)], which tends to overcorrect RPA for systems with stronger static correlation. Similarly, AXK avoids the divergence of second-order Mřller-Plesset (MP2) theory for small gap systems and delivers a much more consistent performance than MP2 across the periodic table at comparable cost. RPA+AXK thus is an accurate, non-empirical, and robust tool to assess and improve semi-local density functional theory for a wide range of systems previously inaccessible to first-principles electronic structure calculations.

Bates, Jefferson E.; Furche, Filipp, E-mail: filipp.furche@uci.edu [Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025 (United States)] [Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025 (United States)

2013-11-07T23:59:59.000Z

426

Constraints on flow regimes in wide-aperture fractures  

SciTech Connect (OSTI)

In recent years, significant advances have been made in our understanding of the complex flow processes in individual fractures, aided by flow visualization experiments and conceptual modeling efforts. These advances have led to the recognition of several flow regimes in individual fractures subjected to different initial and boundary conditions. Of these, the most important regimes are film flow, rivulet flow, and sliding of droplets. The existence of such significantly dissimilar flow regimes has been a major hindrance in the development of self-consistent conceptual models of flow for single fractures that encompass all the flow regimes. The objective of this study is to delineate the existence of the different flow regimes in individual fractures. For steady-state flow conditions, we developed physical constraints on the different flow regimes that satisfy minimum energy configurations, which enabled us to segregate the wide range of fracture transmissivity (volumetric flow rate per fracture width) into several flow regimes. These are, in increasing order of flow rate, flow of adsorbed films, flow of sliding drops, rivulet flow, stable film flow, and unstable (turbulent) film flow. The scope of this study is limited to wide-aperture fractures with the flow on the opposing sides of fracture being independent.

Ghezzehei, Teamrat A.

2004-02-28T23:59:59.000Z

427

Geological problems in radioactive waste isolation - A world wide review  

SciTech Connect (OSTI)

The problem of isolating radioactive wastes from the biosphere presents specialists in the earth sciences with some of the most complicated problems they have ever encountered. This is especially true for high-level waste (HLW), which must be isolated in the underground and away from the biosphere for thousands of years. The most widely accepted method of doing this is to seal the radioactive materials in metal canisters that are enclosed by a protective sheath and placed underground in a repository that has been carefully constructed in an appropriate rock formation. Much new technology is being developed to solve the problems that have been raised, and there is a continuing need to publish the results of new developments for the benefit of all concerned. Table 1 presents a summary of the various formations under investigation according to the reports submitted for this world wide review. It can be seen that in those countries that are searching for repository sites, granitic and metamorphic rocks are the prevalent rock type under investigation. Six countries have developed underground research facilities that are currently in use. All of these investigations are in saturated systems below the water table, except the United States project, which is in the unsaturated zone of a fractured tuff.

Witherspoon, P.A. [Lawrence Berkeley Lab., CA (United States)

1991-06-01T23:59:59.000Z

428

Optical pumping into many-body entanglement  

E-Print Network [OSTI]

We propose a scheme of optical pumping by which a system of atoms coupled to harmonic oscillators is driven to an entangled steady state through the atomic spontaneous emission. It is shown that the optical pumping can be tailored so that the many-body atomic state asymptotically reaches an arbitrary stabilizer state regardless of the initial state. The proposed scheme can be suited to various physical systems. In particular, the ion-trap realization is well within current technology.

Jaeyoon Cho; Sougato Bose; M. S. Kim

2011-01-16T23:59:59.000Z

429

POSSIBLE SIGNS OF WATER AND DIFFERENTIATION IN A ROCKY EXOPLANETARY BODY  

SciTech Connect (OSTI)

Spitzer observations reveal the presence of warm debris from a tidally destroyed rocky and possibly icy planetary body orbiting the white dwarf GD 61. Ultraviolet and optical spectroscopy of the metal-contaminated stellar photosphere reveal traces of hydrogen, oxygen, magnesium, silicon, iron, and calcium. The nominal ratios of these elements indicate an excess of oxygen relative to that expected from rock-forming metal oxides, and thus it is possible that water was accreted together with the terrestrial-like debris. Iron is found to be deficient relative to magnesium and silicon, suggesting the material may have originated as the outer layers of a differentiated parent body, as is widely accepted for the Moon.

Farihi, J. [Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH (United Kingdom); Brinkworth, C. S.; Girven, J.; Hoard, D. W. [Spitzer Science Center, California Institute of Technology, MS 220-6, Pasadena, CA 91125 (United States); Gaensicke, B. T.; Marsh, T. R. [Department of Physics, University of Warwick, Coventry CV5 7L (United Kingdom); Klein, B. [Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States); Koester, D., E-mail: jf123@star.le.ac.uk [Institut fuer Theoretische Physik und Astrophysik, University of Kiel, 24098 Kiel (Germany)

2011-02-10T23:59:59.000Z

430

The general relativistic two body problem  

E-Print Network [OSTI]

The two-body problem in General Relativity has been the subject of many analytical investigations. After reviewing some of the methods used to tackle this problem (and, more generally, the N-body problem), we focus on a new, recently introduced approach to the motion and radiation of (comparable mass) binary systems: the Effective One Body (EOB) formalism. We review the basic elements of this formalism, and discuss some of its recent developments. Several recent comparisons between EOB predictions and Numerical Relativity (NR) simulations have shown the aptitude of the EOB formalism to provide accurate descriptions of the dynamics and radiation of various binary systems (comprising black holes or neutron stars) in regimes that are inaccessible to other analytical approaches (such as the last orbits and the merger of comparable mass black holes). In synergy with NR simulations, post-Newtonian (PN) theory and Gravitational Self-Force (GSF) computations, the EOB formalism is likely to provide an efficient way of computing the very many accurate template waveforms that are needed for Gravitational Wave (GW) data analysis purposes.

Thibault Damour

2013-12-12T23:59:59.000Z

431

Using the World Wide Web at the Lab  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

at the Lab at the Lab Browser information Web browser installation at the Lab Berkeley Lab (LBNL) policy about publishing Web pages Publishing web pages at Berkeley Lab (LBNL) Return to Top Return to Top Web Publishing, Publishing Tools, etc. w3.org: Many HTML converters (tools that create HTML from other formats) TableMaker (web interface to making Netscape-style tables) Colors in webpages CGIs, forms FrameShop (web interface to making frames for Netscape, etc.) The LaTeX2HTML package RosettaMan(reverse compile man pages from formatted form to a number of source formats, including HTML) wget: GNU web mirroring package web "mirroring" via DNS Yahoo's HTML Validators, checkers page HTML Standards, Documentation, the World Wide Web project Graphics Files Icons Imagemaps

432

Wide-Field Astronomical Surveys in the Next Decade  

SciTech Connect (OSTI)

Wide-angle surveys have been an engine for new discoveries throughout the modern history of astronomy, and have been among the most highly cited and scientifically productive observing facilities in recent years. This trend is likely to continue over the next decade, as many of the most important questions in astrophysics are best tackled with massive surveys, often in synergy with each other and in tandem with the more traditional observatories. We argue that these surveys are most productive and have the greatest impact when the data from the surveys are made public in a timely manner. The rise of the 'survey astronomer' is a substantial change in the demographics of our field; one of the most important challenges of the next decade is to find ways to recognize the intellectual contributions of those who work on the infrastructure of surveys (hardware, software, survey planning and operations, and databases/data distribution), and to make career paths to allow them to thrive.

Strauss, Michael A.; /Princeton U.; Tyson, J.Anthony; /UC, Davis; Anderson, Scott F.; /Washington U., Seattle, Astron. Dept.; Axelrod, T.S.; /LSST Corp.; Becker, Andrew C.; /Washington U., Seattle, Astron. Dept.; Bickerton, Steven J.; /Princeton U.; Blanton, Michael R.; /New York U.; Burke, David L.; /SLAC; Condon, J.J.; /NRAO, Socorro; Connolly, A.J.

2009-03-01T23:59:59.000Z

433

Wide-Field Astronomical Surveys in the Next Decade  

SciTech Connect (OSTI)

Wide-angle surveys have been an engine for new discoveries throughout the modern history of astronomy, and have been among the most highly cited and scientifically productive observing facilities in recent years. This trend is likely to continue over the next decade, as many of the most important questions in astrophysics are best tackled with massive surveys, often in synergy with each other and in tandem with the more traditional observatories. We argue that these surveys are most productive and have the greatest impact when the data from the surveys are made public in a timely manner. The rise of the 'survey astronomer' is a substantial change in the demographics of our field; one of the most important challenges of the next decade is to find ways to recognize the intellectual contributions of those who work on the infrastructure of surveys (hardware, software, survey planning and operations, and databases/data distribution), and to make career paths to allow them to thrive.

Strauss, Michael A.; /Princeton U.; Tyson, J.Anthony; /UC, Davis; Anderson, Scott F.; /Washington U., Seattle, Astron. Dept.; Axelrod, T.S.; /LSST Corp.; Becker, Andrew C.; /Washington U., Seattle, Astron. Dept.; Bickerton, Steven J.; /Princeton U.; Blanton, Michael R.; /New York U.; Burke, David L.; /SLAC; Condon, J.J.; /NRAO, Socorro; Connolly, A.J.; /Washington U., Seattle, Astron. Dept.; Cooray, Asantha R.; /UC, Irvine; Covey, Kevin R.; /Harvard U.; Csabai, Istvan; /Eotvos U.; Ferguson, Henry C.; /Baltimore, Space Telescope Sci.; Ivezic, Zeljko; /Washington U., Seattle, Astron. Dept.; Kantor, Jeffrey; /LSST Corp.; Kent, Stephen M.; /Fermilab; Knapp, G.R.; /Princeton U.; Myers, Steven T.; /NRAO, Socorro; Neilsen, Eric H., Jr.; /Fermilab; Nichol, Robert C.; /Portsmouth U., ICG /Harish-Chandra Res. Inst. /Caltech, IPAC /Potsdam, Max Planck Inst. /Harvard U. /Hawaii U. /UC, Berkeley, Astron. Dept. /Baltimore, Space Telescope Sci. /NOAO, Tucson /Carnegie Mellon U. /Chicago U., Astron. Astrophys. Ctr.

2011-11-14T23:59:59.000Z

434

Wide-band coherent receiver development for enhanced surveillance  

SciTech Connect (OSTI)

Oak Ridge National Laboratory (ORNL) has been developing advanced coherent IR heterodyne receivers for plasma diagnostics in fusion reactors for over 20 years. Recent progress in wide band IR detectors and high speed electronics has significantly enhanced the measurement capabilities of coherent receivers. In addition, developments in new HgCdTe and quantum well IR photodetector (QWIP) focal plane arrays are providing the possibility of both active and passive coherent imaging. In this paper the authors discuss the implications of these new enabling technologies to the IR remote sensing community for enhanced surveillance. Coherent receivers, as opposed to direct or thermal detection, provide multiple dimensions of information about a scene or target in a single detector system. Combinations of range, velocity, temperature, and chemical species information are all available from a coherent heterodyne receiver. They present laboratory data showing measured noise equivalent power (NEP) of new QWIP detectors with heterodyne bandwidths greater than 7 GHz. For absorption measurements, a wide band coherent receiver provides the capability of looking between CO{sub 2} lines at off-resonance peaks and thus the measurement of lines normally inaccessible with conventional heterodyne or direct detection systems. Also described are differential absorption lidar (DIAL) and Doppler laboratory measurements using an 8 x 8 HgCdTe focal plane array demonstrating the snapshot capability of coherent receiver detector arrays for enhanced chemical plume and moving hardbody capture. Finally they discuss a variety of coherent receiver configurations that can suppress (or enhance) sensitivity of present active remote sensing systems to speckle, glint, and other measurement anomalies.

Simpson, M.L.; Richards, R.K.; Hutchinson, D.P.

1998-03-01T23:59:59.000Z

435

Relative Short-Range Forecast Impact from Aircraft, Profiler, Radiosonde, VAD, GPS-PW, METAR, and Mesonet Observations via the RUC Hourly Assimilation Cycle  

Science Journals Connector (OSTI)

An assessment is presented on the relative forecast impact on the performance of a numerical weather prediction model from eight different observation data types: aircraft, profiler, radiosonde, velocity azimuth display (VAD), GPS-derived ...

Stanley G. Benjamin; Brian D. Jamison; William R. Moninger; Susan R. Sahm; Barry E. Schwartz; Thomas W. Schlatter

2010-04-01T23:59:59.000Z

436

Commercial Aircraft Corporation of China (Comac) attempts to break the Airbus-Boeing duopoly, will it succeed? : an industry analysis framework applied  

E-Print Network [OSTI]

Using an industry analysis framework, this thesis analyzes whether the recently established Commercial Aircraft Corporation of China (Comac) is likely to break the Boeing-Airbus duopoly in the industry of large commercial ...

Fuentes, Jose L., S.M. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

437

Design and control of a semi-passive, heavy-duty paired mobile robot system with application to aircraft wing assembly  

E-Print Network [OSTI]

We describe the development of a robotic system capable of performing a class of manufacturing operations. An example of such an operation is commonly found in aircraft assembly - this demonstrates the immediate applicability ...

Menon, Manas Chandran

2010-01-01T23:59:59.000Z

438

The Many-Body Perturbation Theory of Brueckner and Goldstone  

Science Journals Connector (OSTI)

After a historical introduction to the many-body problem the landmark papers on the many-body perturbation theory by Brueckner (1955) and by Goldstone (1957) ... the present knowledge of many fermion systems. Brueckner

Werner Kutzelnigg

1992-01-01T23:59:59.000Z

439

Assessment of a body force representation for compressor stability estimation  

E-Print Network [OSTI]

This thesis presents a methodology for the integration of blade row body forces, derived from axisymmetric and three- dimensional flow fields, for use in the stability analysis of axial compressors. The body force database ...

Patel, Amish A. (Amish Ashok)

2009-01-01T23:59:59.000Z

440

A model of overall regulation of body fluids  

Science Journals Connector (OSTI)

A large-scale model of body fluid regulation was presented for the purpose of studying problems concerning body fluid disturbances and fluid therapy. This model, containing subsystems of circulation, respirati...

Noriaki Ikeda; Fumiaki Marumo; Masuo Shirataka…

1979-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Whole body vibration alters proprioception in the trunk  

E-Print Network [OSTI]

Occupational whole body vibration has long been associated with low back injuries. However, the mechanism of these injuries is not well understood. In this paper, the effect of whole body vibration on proprioception and dynamic stability...

Li, Lu; Lamis, Farhana; Wilson, Sara E.

2008-01-01T23:59:59.000Z

442

AP1000{sup R} design robustness against extreme external events - Seismic, flooding, and aircraft crash  

SciTech Connect (OSTI)

Both the International Atomic Energy Agency (IAEA) and the U.S. Nuclear Regulatory Commission (NRC) require existing and new nuclear power plants to conduct plant assessments to demonstrate the unit's ability to withstand external hazards. The events that occurred at the Fukushima-Dai-ichi nuclear power station demonstrated the importance of designing a nuclear power plant with the ability to protect the plant against extreme external hazards. The innovative design of the AP1000{sup R} nuclear power plant provides unparalleled protection against catastrophic external events which can lead to extensive infrastructure damage and place the plant in an extended abnormal situation. The AP1000 plant is an 1100-MWe pressurized water reactor with passive safety features and extensive plant simplifications that enhance construction, operation, maintenance and safety. The plant's compact safety related footprint and protection provided by its robust nuclear island structures prevent significant damage to systems, structures, and components required to safely shutdown the plant and maintain core and spent fuel pool cooling and containment integrity following extreme external events. The AP1000 nuclear power plant has been extensively analyzed and reviewed to demonstrate that it's nuclear island design and plant layout provide protection against both design basis and extreme beyond design basis external hazards such as extreme seismic events, external flooding that exceeds the maximum probable flood limit, and malicious aircraft impact. The AP1000 nuclear power plant uses fail safe passive features to mitigate design basis accidents. The passive safety systems are designed to function without safety-grade support systems (such as AC power, component cooling water, service water, compressed air or HVAC). The plant has been designed to protect systems, structures, and components critical to placing the reactor in a safe shutdown condition within the steel containment vessel which is further surrounded by a substantial 'steel concrete' composite shield building. The containment vessel is not affected by external flooding, and the shield building design provides hazard protection beyond that provided by a comparable reinforced concrete structure. The intent of this paper is to demonstrate the robustness of the AP1000 design against extreme events. The paper will focus on the plants ability to withstand extreme external events such as beyond design basis flooding, seismic events, and malicious aircraft impact. The paper will highlight the robustness of the AP1000 nuclear island design including the protection provided by the unique AP1000 composite shield building. (authors)

Pfister, A.; Goossen, C.; Coogler, K.; Gorgemans, J. [Westinghouse Electric Company LLC, 1000 Westinghouse Drive, Cranberry Township, PA 16066 (United States)

2012-07-01T23:59:59.000Z

443

Seniority in quantum many-body systems  

SciTech Connect (OSTI)

The use of the seniority quantum number in many-body systems is reviewed. A brief summary is given of its introduction by Racah in the context of atomic spectroscopy. Several extensions of Racah's original idea are discussed: seniority for identical nucleons in a single-j shell, its extension to the case of many, non-degenerate j shells and to systems with neutrons and protons. To illustrate its usefulness to this day, a recent application of seniority is presented in Bose-Einstein condensates of atoms with spin.

Van Isacker, P. [Grand Accelerateur National d'Ions Lourds, CEA/DSM-CNRS/IN2P3 BP 55027, F-14076 Caen Cedex 5 (France)

2010-12-23T23:59:59.000Z

444

A priori estimates for relativistic liquid bodies  

E-Print Network [OSTI]

We demonstrate that a sufficiently smooth solution of the relativistic Euler equations that represents a dynamical compact liquid body, when expressed in Lagrangian coordinates, determines a solution to a system of non-linear wave equations with acoustic boundary conditions. Using this wave formulation, we prove that these solutions satisfy energy estimates without loss of derivatives. Importantly, our wave formulation does not require the liquid to be irrotational, and the energy estimates do not rely on divergence and curl type estimates employed in previous works.

Oliynyk, Todd A

2015-01-01T23:59:59.000Z

445

Development of autonomous magnetometer rotorcraft for wide area assessment  

SciTech Connect (OSTI)

Large areas across the United States are potentially contaminated with UXO, with some ranges encompassing tens to hundreds of thousands of acres. Technologies are needed which will allow for cost effective wide area scanning with 1) near 100 % coverage and 2) near 100 % detection of subsurface ordnance or features indicative of subsurface ordnance. The current approach to wide area assessment is a multi-level one, in which medium - altitude fixed wing optical imaging is used for an initial site assessment. This assessment is followed with low altitude manned helicopter based magnetometry. Subsequent to this wide area assessment targeted surface investigations are performed using either towed geophysical sensor arrays or man portable sensors. In order to be an effective tool for small UXO detection, the sensing altitude for magnetic site investigations needs to be on the order of 1 – 3 meters. These altitude requirements mean that manned helicopter surveys will generally only be feasible in large, open and relatively flat terrains. While such surveys are effective in mapping large areas relatively fast there are substantial mobilization/demobilization, staffing and equipment costs associated with these surveys (resulting in costs of approximately $100-$150/acre). In addition, due to the low altitude there are substantial risks to pilots and equipment. Surface towed arrays provide high resolution maps but have other limitations, e.g. in their ability to navigate rough terrain effectively. There is thus a need for other systems which can be used for effective data collection. An UAV (Unmanned Aerial Vehicle) magnetometer platform is an obvious alternative. The motivation behind such a system is that it reduces risk to operators, is lower in initial and Operational and Maintenance (O&M) costs (and can thus potentially be applied to smaller sites) and has the potential of being more effective in terms of detection and possibly characterization (through the use of dynamic acquisition, i.e. survey mission inflight reprioritization). We describe and report on a one year effort with as primary goal to provide a recommendation to SERDP for a path forward in the implementation of one or more autonomous unmanned magnetometer rotorcraft platforms. This recommendation (which is provided in chapter 6) is based on the following three elements a) An assessment on the applicability of autonomous rotorcraft magnetometer systems to the current DoD site inventory, and an initial assessment of which type(s) of autonomous unmanned magnetometer rotorcraft platforms (in terms of performance characteristics such as payload, altitude, obstacle avoidance, production rate and flight time) would be most relevant to this inventory (chapter 3); b) An evaluation of the feasibility of assembling such platforms from commercial components (unmanned rotorcraft, control systems and sensors – both magnetometer sensors and supporting sensors). This evaluation included several highly successful field tests (chapter 4 and 5); c) A recommendation of the path forward, which includes a detailed outline of the efforts required in the design, assembly and testing of different modular platforms (chapter 6)

Roelof Versteeg; Matt Anderson; Les Beard; Eric Corban; Darryl Curley; Jeff Gamey; Ross Johnson; Dwight Junkin; Mark McKay; Jared Salzmann; Mikhail Tchernychev; Suraj Unnikrishnan; Scott Vinson

2010-04-01T23:59:59.000Z

446

Sampling device with a capped body and detachable handle  

DOE Patents [OSTI]

The apparatus is a sampling device having a pad for sample collection, a body which supports the pad, a detachable handle connected to the body and a cap which encloses and retains the pad and body to protect the integrity of the sample.

Jezek, Gerd-Rainer (Orchard Park, NY)

2000-01-01T23:59:59.000Z

447

Synchronized Video: An Interface for Harmonizing Video with Body Movements  

E-Print Network [OSTI]

Synchronized Video: An Interface for Harmonizing Video with Body Movements Yoshihiro Watanabe@ipc.i.u-tokyo.ac.jp ABSTRACT We propose a new media reproduction technology called Syn- chronized Video that supports the learning of new body move- ments. The proposed technology plays video in synchroniza- tion with human body

Yamamoto, Hirosuke

448

The Dynamics of Brain-Body-Environment Systems  

E-Print Network [OSTI]

The Dynamics of Brain-Body-Environment Systems in Behavior and Cognition An NSF IGERT Training Program Environment BodyAgent Agent Graduate Traineeships Available in Research Themes * Brain Dynamics the dynamical interaction of brains with bodies, agents with their environments, and agents with other agents

Menczer, Filippo

449

Body Mass Index and Risk of Leukemia in Older Women  

Science Journals Connector (OSTI)

...Short Communications Body Mass Index and Risk of Leukemia in Older...fact. Overweight [body mass index (BMI) 25.0-29.9 kg...or if they had a body mass index (BMI; calculated using baseline...as the time elapsed from the completion of the 1986 questionnaire to...

Julie A. Ross; Emily Parker; Cindy K. Blair; James R. Cerhan; and Aaron R. Folsom

2004-11-01T23:59:59.000Z

450

Assessment of the fire resistance of a nuclear power plant subjected to a large commercial aircraft crash  

Science Journals Connector (OSTI)

The safety assessment of infrastructures, such as a nuclear power plant, for the crash of a large commercial aircraft has been performed worldwide after the terrorism that occurred in the U.S. on September 11, 2001. The assessment, however, has mainly focused on the techniques of impact analysis. In this study, a systematic procedure to assess the fire resistance of containment and auxiliary buildings subjected to such an aircraft crash is proposed. The intensity, duration and distribution of the fire are determined based on aircraft crash analyses and characteristics of jet fuel. A three-dimensional detailed finite element model of the containment and auxiliary buildings is established and used for heat transfer and thermal stress analyses, taking into account the material properties at an elevated temperature. Section forces can then be obtained that are based on a nonlinear stress–strain relationship. The fire resistance of the structure is assessed by comparing the fire-induced section forces with the section resistance which is evaluated using the load–moment strength interaction diagram. The study addresses the problem whereby the conventional assessment that only considers the flexural behaviour is less accurate. The assessment results support the general conclusion that the nuclear power plant structures can maintain structural integrity against external fire due to their relatively thick sections. The proposed procedure can be extensively applied to evaluate the fire endurance time of any type of structure subjected to an arbitrary fire.

Se-Jin Jeon; Byeong-Moo Jin; Young-Jin Kim

2012-01-01T23:59:59.000Z

451

Body monitoring and imaging apparatus and method  

DOE Patents [OSTI]

A non-acoustic pulse-echo radar monitor is employed in the repetitive mode, whereby a large number of reflected pulses are averaged to produce a voltage that modulates an audio oscillator to produce a tone that corresponds to the heart motion. The antenna used in this monitor generally comprises two flat copper foils, thus permitting the antenna to be housed in a substantially flat housing. The monitor converts the detected voltage to an audible signal with both amplitude modulation and Doppler effect. It further uses a dual time constant to reduce the effect of gross sensor-to-surface movement. The monitor detects the movement of one or more internal body parts, such as the heart, lungs, arteries, and vocal chords, and includes a pulse generator for simultaneously inputting a sequence of pulses to a transmit path and a grating path. The pulses transmitted along the transmit path drive Oh impulse, generator and provide corresponding transmit pulses that are applied to a transmit antenna. The gating path includes a range delay generator which generates timed gating pulses. The timed gating pulses cause the receive path to selectively conduct pulses reflected from the body parts and received by a receive antenna. The monitor output potential can be separated into a cardiac output indicative of the physical movement of the heart, and a pulmonary output indicative of the physical movement of the lung. The impulse generator in the transmit path can be replaced with a pulsed RF generator.

McEwan, Thomas E. (Livermore, CA)

1998-01-01T23:59:59.000Z

452

Body monitoring and imaging apparatus and method  

DOE Patents [OSTI]

A non-acoustic pulse-echo radar monitor is employed in the repetitive mode, whereby a large number of reflected pulses are averaged to produce a voltage that modulates an audio oscillator to produce a tone that corresponds to the heart motion. The antenna used in this monitor generally comprises two flat copper foils, thus permitting the antenna to be housed in a substantially flat housing. The monitor converts the detected voltage to an audible signal with both amplitude modulation and Doppler effect. It further uses a dual time constant to reduce the effect of gross sensor-to-surface movement. The monitor detects the movement of one or more internal body parts, such as the heart, lungs, arteries, and vocal chords, and includes a pulse generator for simultaneously inputting a sequence of pulses to a transmit path and a grating path. The pulses transmitted along the transmit path drive Oh impulse, generator and provide corresponding transmit pulses that are applied to a transmit antenna. The gating path includes a range delay generator which generates timed gating pulses. The timed gating pulses cause the receive path to selectively conduct pulses reflected from the body parts and received by a receive antenna. The monitor output potential can be separated into a cardiac output indicative of the physical movement of the heart, and a pulmonary output indicative of the physical movement of the lung. The impulse generator in the transmit path can be replaced with a pulsed RF generator. 13 figs.

McEwan, T.E.

1998-06-16T23:59:59.000Z

453

Body monitoring and imaging apparatus and method  

DOE Patents [OSTI]

A non-acoustic pulse-echo radar monitor is employed in the repetitive mode, whereby a large number of reflected pulses are averaged to produce a voltage that modulates an audio oscillator to produce a tone that corresponds to the heart motion. The antenna used in this monitor generally comprises two flat copper foils, thus permitting the antenna to be housed in a substantially flat housing. The monitor converts the detected voltage to an audible signal with both amplitude modulation and Doppler effect. It further uses a dual time constant to reduce the effect of gross sensor-to-surface movement. The monitor detects the movement of one or more internal body parts, such as the heart, lungs, arteries, and vocal chords, and includes a pulse generator for simultaneously inputting a sequence of pulses to a transmit path and a gating path. The pulses transmitted along the transmit path drive an impulse generator and provide corresponding transmit pulses that are applied to a transmit antenna. The gating path includes a range delay generator which generates timed gating pulses. The timed gating pulses cause the receive path to selectively conduct pulses reflected from the body parts and received by a receive antenna. The monitor output potential can be separated into a cardiac output indicative of the physical movement of the heart, and a pulmonary output indicative of the physical movement of the lung. 12 figs.

McEwan, T.E.

1996-11-12T23:59:59.000Z

454

Body monitoring and imaging apparatus and method  

DOE Patents [OSTI]

A non-acoustic pulse-echo radar monitor is employed in the repetitive mode, whereby a large number of reflected pulses are averaged to produce a voltage that modulates an audio oscillator to produce a tone that corresponds to the heart motion. The antenna used in this monitor generally comprises two flat copper foils, thus permitting the antenna to be housed in a substantially flat housing. The monitor converts the detected voltage to an audible signal with both amplitude modulation and Doppler effect. It further uses a dual time constant to reduce the effect of gross sensor-to-surface movement. The monitor detects the movement of one or more internal body parts, such as the heart, lungs, arteries, and vocal chords, and includes a pulse generator for simultaneously inputting a sequence of pulses to a transmit path and a gating path. The pulses transmitted along the transmit path drive an impulse generator and provide corresponding transmit pulses that are applied to a transmit antenna. The gating path includes a range delay generator which generates timed gating pulses. The timed gating pulses cause the receive path to selectively conduct pulses reflected from the body parts and received by a receive antenna. The monitor output potential can be separated into a cardiac output indicative of the physical movement of the heart, and a pulmonary output indicative of the physical movement of the lung.

McEwan, Thomas E. (Livermore, CA)

1996-01-01T23:59:59.000Z

455

Vibrations in brass instrument bodies: A review.  

Science Journals Connector (OSTI)

The bodies of brass instruments vibrate when played as evident to any player. These vibrations are driven mechanically at the player’s lips and by coupling with the internal acoustic field throughout the instrument. The coupling can equally well allow energy flow in the opposite direction from the body to the player’s lips and to the internal acoustic field. The vibrating shell can also radiate directly into the room. Studies involving human or machine players suggest that the effect of the wall vibrations on the acoustic spectral components is of the order of a few decibels. However for the most part the direct radiation of the wall vibrations is approximately 20 dB below the level of the radiated internal acoustic field. The wall vibrations have a slightly different time envelope though and also have a formant?like region around a few kilohertz. Some of the pieces of this complex puzzle that need further investigation include the interaction between player and instrument the effect of sound level on the coupling the perceptibility of the radiated vibrations by auditors and the variations within the brass family.

Peter L. Hoekje

2010-01-01T23:59:59.000Z

456

Non-equilibrium many body dynamics  

SciTech Connect (OSTI)

This Riken BNL Research Center Symposium on Non-Equilibrium Many Body Physics was held on September 23-25, 1997 as part of the official opening ceremony of the Center at Brookhaven National Lab. A major objective of theoretical work at the center is to elaborate on the full spectrum of strong interaction physics based on QCD, including the physics of confinement and chiral symmetry breaking, the parton structure of hadrons and nuclei, and the phenomenology of ultra-relativistic nuclear collisions related to the up-coming experiments at RHIC. The opportunities and challenges of nuclear and particle physics in this area naturally involve aspects of the many body problem common to many other fields. The aim of this symposium was to find common theoretical threads in the area of non-equilibrium physics and modern transport theories. The program consisted of invited talks on a variety topics from the fields of atomic, condensed matter, plasma, astrophysics, cosmology, and chemistry, in addition to nuclear and particle physics. Separate abstracts have been indexed into the database for contributions to this workshop.

Creutz, M.; Gyulassy, M.

1997-09-22T23:59:59.000Z

457

Four-body correlations in nuclei  

E-Print Network [OSTI]

Low-energy spectra of 4$n$ nuclei are described with high accuracy in terms of four-body correlated structures ("quartets"). The states of all $N\\geq Z$ nuclei belonging to the $A=24$ isobaric chain are represented as a superposition of two-quartet states, with quartets being characterized by isospin $T$ and angular momentum $J$. These quartets are assumed to be those describing the lowest states in $^{20}$Ne ($T_z$=0), $^{20}$F ($T_z$=1) and $^{20}$O ($T_z$=2). We find that the spectrum of the self-conjugate nucleus $^{24}$Mg can be well reproduced in terms of $T$=0 quartets only and that, among these, the $J$=0 quartet plays by far the leading role in the structure of the ground state. The same conclusion is drawn in the case of the three-quartet $N=Z$ nucleus $^{28}$Si. As an application of the quartet formalism to nuclei not confined to the $sd$ shell, we provide a description of the low-lying spectrum of the proton-rich $^{92}$Pd. The results achieved indicate that, in 4$n$ nuclei, four-body degrees of f...

Sambataro, M

2015-01-01T23:59:59.000Z

458

Social survey of the annoyance of low?frequency aircraft ground noise  

Science Journals Connector (OSTI)

Concerns about the appropriateness of representing low?frequency aircraft ground and near?ground noise in A?weighted units and about the adequacy of standard interpretive criteria for assessing community response to low?frequency noises are becoming more common at large civil airports. Residents of a neighborhood adjacent to a busy runway were interviewed to determine the annoyance of runway sideline noise at frequencies below 100 Hz and of its audible manifestations inside homes. Extensive measurements were made to estimate low?frequency noise contours in the interviewing area and street addresses of respondents were geo?coded to permit assignment of low?frequency noise levels to each household. Residents who were highly annoyed by low?frequency sideline noise were concentrated in areas with maximum sound levels summed in one?third octave bands between 25 and 80 Hz (inclusive) that were in excess of 75–80 dB. These levels are consistent with Hubbard’s (1980) estimates of low?frequency airborne sound levels capable of inducing secondary emissions in light architectural elements of residences.

S. Fidell; L. Silvati; S. Lind; K. Pearsons

1999-01-01T23:59:59.000Z

459

Fuel dispersal in high-speed aircraft/soil impact scenarios  

SciTech Connect (OSTI)

The objective of this study is to determine how the jet fuel contained in aircraft wing tanks disperses on impact with a soft terrain, i.e., soils, at high impact velocities. The approach used in this study is to combine experimental and numerical methods. Tests were conducted with an approximately 1/42 linear-scale mass-model of a 1/4 span section of a C-141 wing impacting a sand/clay mixture. The test results showed that within the uncertainty of the data, the percentage of incident liquid mass remaining in the crater is the same as that qualitatively described in earlier napalm bomb development studies. Namely, the percentage of fuel in the crater ranges from near zero for grazing impacts to 25%--50% for high angles of impact. To support a weapons system safety assessment (WSSA), the data from the current study have been reduced to correlations. The numerical model used in the current study is a unique coupling of a Smooth Particle Hydrodynamics (SPH) method with the transient dynamics finite element code PRONTO. Qualitatively, the splash, erosion, and soil compression phenomena are all numerically predicted. Quantitatively, the numerical method predicted a smaller crater cross section than was observed in the tests.

Tieszen, S.R.; Attaway, S.W. [Sandia National Labs., Albuquerque, NM (United States). Engineering Sciences Center

1996-01-01T23:59:59.000Z

460

Love wave surface acoustic wave sensor for ice detection on aircraft  

Science Journals Connector (OSTI)

This paper presents the design fabrication experimental results and theoretical validation of a Love wave surface acoustic wave sensor for detecting the phase change from liquid water to solid ice. The sensing of this phase transition is due to the shear horizontal nature of Love waves which couple to a solid (ice) but not to a liquid (water). An SiO2 film of thickness 3.2 ?m deposited on an ST cut quartz wafer via plasma?enhanced chemical?vapor deposition acts as the guiding layer for Love waves. Testing is carried out with the water or ice placed directly in the propagation path of Love waves. An oscillation frequency shift of 2 MHz is observed when water on the sensor is frozen and melted cyclically. The contribution to the frequency shift is explained in terms of the acousto?electric effect (high permittivity and conductivity of water relative to ice) mass loading and elastic film formation (solid ice). An arrangement for wireless interrogation of the sensor is proposed which is particularly attractive for aircraft and rotorcraft applications obviating the need for complex wiring and local power sources. t

Vasundara V. Varadan; Sunil Gangadharan; Vijay K. Varadan

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Dual-band infrared imaging for quantitative corrosion detection in aging aircraft  

SciTech Connect (OSTI)

Aircraft skin thickness-loss from corrosion has been measured using dual-band infrared (DBIR) imaging on a flash-heated Boeing 737 fuselage structure. The authors mapped surface temperature differences of 0.2 to 0.6 C for 5 to 14 % thickness losses within corroded lap splices at 0.4 seconds after the heat flash. The procedure mapped surface temperature differences at sites without surface-emissivity clutter (from dirt, dents, tape, markings, ink, sealants, uneven paint, paint stripper, exposed metal and roughness variations). They established the correlation of percent thickness loss with surface temperature rise using a partially corroded F-18 wing box and several aluminum panels which had thickness losses from milled flat-bottom holes. The authors mapped the lap splice composite thermal inertia, (k{rho}c){sup 1/2}, which characterized shallow skin defects within the lap splice at early times (<0.3 s) and deeper skin defects within the lap splice at late times (>0.4 s). Corrosion invaded the inside of the Boeing 737 lap splice, beneath the galley and the latrine, where they observed ``pillowing`` from volume build-up of corrosion by-products.

Del Grande, N.K. [Lawrence Livermore National Lab., CA (United States)

1993-12-31T23:59:59.000Z

462

Dual-band infrared imaging for quantitative corrosion detection in aging aircraft  

SciTech Connect (OSTI)

Aircraft skin thickness-loss from corrosion has been measured using dual-band infrared (DBIR) imaging on a flash-heated Boeing 737 fuselage structure. We mapped surface temperature differences of 0.2 to 0.6 {degrees}C for 5 to 14% thickness losses within corroded lap splices at 0.4 seconds after the heat flash. Our procedure mapped surface temperature differences at sites without surface-emissivity clutter (from dirt, dents, tape, markings, ink, sealants, uneven paint, paint stripper, exposed metal and roughness variations). We established the correlation of percent thickness loss with surface temperature rise using a partially corroded F-18 wing box and several aluminum panels which had thickness losses from milled flat-bottom holes. We mapped the lap splice composite thermal inertia, (kpc){sup {1/2}}, which characterized shallow skin defects within the lap splice at early times (<0.3 s) and deeper skin defects within the lap splice at late times (>0.4 s). Corrosion invaded the inside of the Boeing 737 lap splice, beneath the galley and the latrine, where we observed ``pillowing`` from volume build-up of corrosion by-products.

Del Grande, N.K.

1993-11-01T23:59:59.000Z

463

Wide-band neutrino beams at 1000 GeV  

SciTech Connect (OSTI)

In a previous publication, S. Mori discussed various broad-band neutrino and antineutrino beams using 1000 GeV protons on target. A new beam (SST) has been designed which provides the same neutrino flux as the quadrupole triplet (QT) while suppressing the wrong sign flux by a factor of 18. It also provides more than twice as much high energy antineutrino flux than the sign-selected bare target (SSBT) and in addition, has better neutrino suppression. While it is possible to increase the flux obtained from the single horn system over that previously described, the conclusion which states any horn focussing system seems to be of marginal use for Tevatron neutrino physics, is unchanged. Neutrino and antineutrino event rates and wrong sign backgrounds were computed using NUADA for a 100 metric ton detector of radius 1.5 meters. Due to radiation considerations and the existing transformer location, the horn beam is placed in its usual position inside the Target Tube. All other beams are placed in Fronthall. Thus, for the wide-band Fronthall trains a decay distance of 520 meters is used, versus 400 meters for the horn train. (WHK)

Malensek, A.; Stutte, L.

1983-04-11T23:59:59.000Z

464

Wide-range plutonium isotopic analysis with CDTE detector  

SciTech Connect (OSTI)

Nondestructive analysis (NDA) techniques applied to bulk nuclear materials (NM) are important for nuclear safeguards and material control because of timeliness, cost-effectiveness and containment integrity. The common NDA techniques, calorimetry and neutron coincidence counting, require knowledge of the isotopic composition of the material quantitative interpretation of these measurements. Gamma-ray spectroscopy with high-resolution detectors is a well-developed NDA technique for isotopics. The use of intrinsic germanium detectors cooled to cryogenic temperatures for isotopic measurements is sometimes difficult or even impossible because of severe access limitations with the sensitive, heavy detectors. Highly portable isotopics measurements are needed for in-situ verification of bulk NM quantities or, in many cases, for measurements of holdup quantities. This paper summarizes the gamma-ray measurements with a new, portable CdTe detector. It also presents the detailed results of the wide-range isotopic analysis of plutonium with FRAM v4, the first results of this kind for a non-cryogenic detector.

Vo, Duc T.; Russo, P. A. (Phyllis A.)

2001-01-01T23:59:59.000Z

465

Chapter 17 - Expenditure Incidence and Economy-Wide Incidence Studies  

Science Journals Connector (OSTI)

Abstract Chapter 17 has two distinct sets of topics. The first part offers an analysis of expenditure incidence that covers the incidence of transfer payments, decreasing cost services, and nonexclusive goods. The second part discusses economy-wide incidence studies. Highlighted are the Pechman and Okner sources and uses approach to tax incidence, computable general equilibrium models (briefly), the Auerbach and Kotlikoff analysis of tax incidence in a dynamic setting using an OLG model, and the Fullerton and Rodgers model of lifetime tax incidence. The Appendix to Chapter 17 on tax reform considers four broad-based tax reform proposals that are common in the economics literature, bringing together some theoretical results from previous chapters and then turning to other issues that are not discussed elsewhere in the text. These include whether income from capital should be taxed, Michael Kremer's call for aged-based marginal tax rates, and the general problem of commitment or time-inconsistency in second-best analysis with imperfect information.

Richard W. Tresch

2015-01-01T23:59:59.000Z

466

DOE Essential Body of Knowledge | Department of Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Essential Body of Knowledge Essential Body of Knowledge DOE Essential Body of Knowledge DOE Essential Body of Knowledge & Core Competency Training The Office of the Chief Information Officer (OCIO) utilized DOE cybersecurity policy, best practices and lessons learned, and comprehensive internal needs assessments to identify fundamental cybersecurity functional roles and associated responsibilities to and define the essential body of knowledge (EBK) needed to support cybersecurity responsibilities and activities within the Department. Components of the EBK are assigned to each functional role, and customized curriculum is determined for each key role via core competency worksheets. The OCIO has determined the following roles to be key functional cyber roles within the Department:

467

Tamper-indicating device having a glass body  

DOE Patents [OSTI]

A tamper-indicating device is described. The device has a first glass body member and a second glass body member that are attached to each other through a hasp. The glass body members of the device can be tempered. The body members can be configured with hollow volumes into which powders, microparticles, liquids, gels, or combinations thereof are sealed. The choice, the amount, and the location of these materials can produce a visible, band pattern to provide each body member with a unique fingerprint identifier, which makes it extremely difficult to repair or replace once it is damaged in order to avoid tamper detection.

Johnston, Roger G. (Los Alamos, NM); Garcia, Anthony R. E. (Espanola, NM)

2003-04-29T23:59:59.000Z

468

Complementarity problems for two pairs of charged bodies  

E-Print Network [OSTI]

We consider an interaction of charged bodies under the following simplified conditions: the distribution of charge over each body is stable; the interaction of bodies is governed by electrical forces only. Physically, these assumptions can be treated as the following decomposition of charges: the structure of each body is assumed to be stable due to inner forces (say, quantum forces [1]), which do not influence the interaction of the bodies; the bodies interact due to the classical electrical forces [2] only. In this model, the role of inner forces is to create a specific stable distribution of the charge over a body. We assume that the charge distribution over a body can be described by the density of the charge. In our model, the distribution of the charge is the property of a body and does not change in the process of the bodies' interaction. For the simplicity we assume that the bodies are similar in the sense of geometry, say, occupy domain $Q$ and have a preferable direction of interaction denoted by $Ox_3$.

A. A. Kolpakov; A. G. Kolpakov

2012-07-05T23:59:59.000Z

469

Metal multilayer mirrors for EUV wide field telescopes  

SciTech Connect (OSTI)

Metal multilayer mirrors have been designed for the ALEXIS satellite, which is to carry six wide field telescopes to perform an all-sky survey in three or four narrow wavelength bands in the EUV. Comprised of alternating layers of molybdenum and silicon, the mirrors are optimized to provide maximum reflectivity at angles from 11.5 to 17/degree/ off normal incidence and at wavelengths of 133, 171, or 186A. Simultaneously, the mirrors use a ''wavetrap'' described below to suppress reflectivity at 304A, where the extremely strong geocoronal line of He II causes severe background problems. Low reflectivity at 304A is achieved by superposing two layer pairs that provide destructive interference with an effective 2d spacing of 152A. The Mo layers in this wavetrap must be very thin, about 10A each, in order to allow the shorter wavelengths desired for peak reflectivity to penetrate without significant attenuation. Because refraction changes the effective angle of passage through the wavetrap, a joint optimization between layer thicknesses in the deep layers and the wavetrap layers must be performed for each target peak wavelength. For the 186A mirror, the optimum design from substrate upward is 40 layer pairs, each 74A Si and 31A Mo, followed by 2 layer pairs, each 55A Si and 10A Mo. Calculations predict this design will have a peak reflectivity at 186A of 35 percent and a 304A reflectivity less than 10/sup /minus/5/, if available optical constants are correct and the multilayer can be fabricated without difficulty. We will present details of the calculations and laboratory measurements of the reflectivity performance attained with prototype mirrors. 6 refs., 2 figs.

Smith, B.W.; Bloch, J.J.; Roussel-Dupre,D.

1989-01-01T23:59:59.000Z

470

Data warehousing, metadata, and the World Wide Web  

SciTech Connect (OSTI)

The connection between data warehousing and the metadata. used to catalog and locate warehouse data is obvious, but what is the connection between data warehousing, metadata, and the World Wide Web (WWW)? Specifically, the WWW can be used to allow users to search metadata (data about the data) and retrieve data from a warehouse database. In addition, the Internet/Intranet can be used to manage the metadata in archive databases and to streamline the database administration functions of a large archive center. The Oak Ridge National Laboratory`s (ORNL`s) Distributed Active Archive Center (DAAC) is a data archive and distribution center for the National Air and Space Administration`s (NASA`s) Earth Observing System Data and Information System (EOSDIS); the ORNL DAAC provides access to tabular and imagery datasets used in ecological and environmental research. To support this effort, we have taken advantage of the rather unique and user-friendly features of the WWW to (1) allow users to search for and download the data we archive and (2) provide DAAC developers with effective metadata and data management tools. In particular, the ORNL DAAC has developed the Biogeochemical Information Ordering Management Environment (BIOME), a WWW search-and-order system, as well as a WWW-based database administrator`s (DBA`s) tool suite designed to assist the site`s DBA in the management of archive metadata and databases and several other DBA functions that are essential to site management. This paper is a case study of how the ORNL DAAC uses the WWW to both manage data and allow access to its data warehouse.

Yow, T.G.; Smith, A.W.; Daugherty, P.F. [and others

1997-04-16T23:59:59.000Z

471

Drill-bit with full offset cutter bodies  

SciTech Connect (OSTI)

A rotary drag drill bit is seen wherein cutter bodies are rotatively connected to a main body structure at a fully offset position. The fully offset position is defined by a rotational axis of each cutter body, a longitudinal axis of the drill bit and end support points or positions of the cutter bodies. The rotational axes of the cutter bodies are perpendicular to the longitudinal axis of the drill bit. The end supports of the cutter body are each equal distance from any point on the longitudinal axis of the drill bit. The cutter bodies of essentially ellipsoidal configuration, being slightly thicker at a mid-portion thereof. Cutting elements are connected to flutes projecting above an outer surface of each cutter body. In a primary rotational direction of the drill string and drill bit, the rows abrade the bottom and side walls of a well bore as the cutter body attacks the earth formation as the drill bit is rotated. The impingement of the cutting elements of the cutter body on the earth formation imparts a secondary rotation to the cutter bodies, which secondary rotation is induced by the primary rotation. The secondary rotation allows the rows of cutting elements to engage the side wall of the bore and gauge the hole as well as abrading away material from the bottom of the well bore. A roller bearing assembly is provided for the cutter body to permit the secondary rotation, while a thrust bearing assembly assists the primary abrasive action imparted by the primary rotational movement of the rotary drill bit. A lubrication system is included in the main body structure of the drill bit wherein both the roller bearing assembly and thrust bearing assembly are lubricated.

Frear, L.

1985-11-12T23:59:59.000Z

472

Regenerative fuel cells for High Altitude Long Endurance Solar Powered Aircraft  

SciTech Connect (OSTI)

High Altitude Long Endurance (HALE) unmanned missions appear to be feasible using a lightweight, high efficiency, span-loaded, Solar Powered Aircraft (SPA) which includes a Regenerative Fuel Cell (RFC) system and novel tankage for energy storage. An existing flightworthy electric powered flying wing design was modified to incorporate present and near-term technologies in energy storage, power electronics, aerodynamics, and guidance and control in order to design philosophy was to work with vendors to identify affordable near-term technological opportunities that could be applied to existing designs in order to reduce weight, increase reliability, and maintain adequate efficiency of components for delivery within 18 months. The energy storage subsystem for a HALE SPA is a key driver for the entire vehicle because it can represent up to half of the vehicle weight and most missions of interest require the specific energy to be considerably higher than 200 W-hr/kg for many cycles. This stringent specific energy requirement precludes the use of rechargeable batteries or flywheels and suggests examination of various RFC designs. An RFC system using lightweight tankage, a single fuel cell (FC) stack, and a single electrolyzer (EC) stack separated by the length of a spar segment (up to 39 ft), has specific energy of {approximately}300 W-hr/kg with 45% efficiency, which is adequate for HALE SPA requirements. However, this design has complexity and weight penalties associated with thermal management, electrical wiring, plumbing, and structural weight. A more elegant solution is to use unitized RFC stacks (reversible stacks that act as both FCs and ECs) because these systems have superior specific energy, scale to smaller systems more favorably, and have intrinsically simpler thermal management.

Mitlitsky, F.; Colella, N.J.; Myers, B. [Lawrence Livermore National Lab., CA (United States); Anderson, C.J. [Aero Vironment, Inc., Monrovia, CA (United States)

1993-06-02T23:59:59.000Z

473

Damage tolerance assessment of bonded composite doubler repairs for commercial aircraft applications  

SciTech Connect (OSTI)

The Federal Aviation Administration has sponsored a project at its Airworthiness Assurance NDI Validation Center (AANC) to validate the use of bonded composite doublers on commercial aircraft. A specific application was chosen in order to provide a proof-of-concept driving force behind this test and analysis project. However, the data stemming from this study serves as a comprehensive evaluation of bonded composite doublers for general use. The associated documentation package provides guidance regarding the design, analysis, installation, damage tolerance, and nondestructive inspection of these doublers. This report describes a series of fatigue and strength tests which were conducted to study the damage tolerance of Boron-Epoxy composite doublers. Tension-tension fatigue and ultimate strength tests attempted to grow engineered flaws in coupons with composite doublers bonded to aluminum skin. An array of design parameters, including various flaw scenarios, the effects of surface impact, and other off-design conditions, were studied. The structural tests were used to: (1) assess the potential for interply delaminations and disbonds between the aluminum and the laminate, and (2) determine the load transfer and crack mitigation capabilities of composite doublers in the presence of severe defects. A series of specimens were subjected to ultimate tension tests in order to determine strength values and failure modes. It was demonstrated that even in the presence of extensive damage in the original structure (cracks, material loss) and in spite of non-optimum installations (adhesive disbonds), the composite doubler allowed the structure to survive more than 144,000 cycles of fatigue loading. Installation flaws in the composite laminate did not propagate over 216,000 fatigue cycles. Furthermore, the added impediments of impact--severe enough to deform the parent aluminum skin--and hot-wet exposure did not effect the doubler`s performance. Since the tests were conducting using extreme combinations of flaw scenarios (sizes and collocation) and excessive fatigue load spectrums, the performance parameters were arrived at in a conservative manner.

Roach, D.

1998-08-01T23:59:59.000Z

474

Policy Flash 2014-18 Complex-Wide Strategic Sourcing | Department...  

Broader source: Energy.gov (indexed) [DOE]

Policy Flash 2014-18 Complex-Wide Strategic Sourcing Policy Flash 2014-18 Complex-Wide Strategic Sourcing Questions concerning this policy flash should be directed to Scott Clemons...

475

New York State-wide Alternative Fuel Vehicle Program for Vehicles...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

New York State-wide Alternative Fuel Vehicle Program for Vehicles and Fueling Stations New York State-wide Alternative Fuel Vehicle Program for Vehicles and Fueling Stations 2010...

476

EIS-0387: DOE Notice of Availability of the Draft Site-Wide Environmen...  

Office of Environmental Management (EM)

DOE Notice of Availability of the Draft Site-Wide Environmental Impact Statement EIS-0387: DOE Notice of Availability of the Draft Site-Wide Environmental Impact Statement Y-12...

477

EAC Recommendations for DOE Action Regarding Interconnection-Wide Planning- June 6, 2013  

Broader source: Energy.gov [DOE]

EAC Recommendations for DOE Action Regarding Interconnection-Wide Planning, approved at the June 5-6, 2013 EAC Meeting.

478

How Large Is the World Wide Web? Adrian Dobra Stephen E. Fienberg  

E-Print Network [OSTI]

How Large Is the World Wide Web? Adrian Dobra Stephen E. Fienberg National Institute of Department of the World Wide Web is extremely difficult because sampling directly from the Web is not possible. Several of the World Wide Web. Keywords Contingency tables; Markov chain Monte Carlo methods; Multiple­recapture models

Fienberg, Stephen E.

479

World Wide Wood Network, Ltd. 2001-2002 Forest Products e-Commerce  

E-Print Network [OSTI]

World Wide Wood Network, Ltd. © 2001-2002 Forest Products e-Commerce An Oxymoron or Wave of the Future Presented by: Thomas J. Westbrook, JD President & CEO World Wide Wood Network, Ltd. http Collapsing time and space Communication World Wide Wood Network, Ltd. © 2001-2002 The Promise of the Internet

480

Heat engine driven by three-body photon tunneling  

E-Print Network [OSTI]

Near-field heat engines are devices that convert the evanescent thermal field supported by a primary source into usable mechanical energy. By analyzing the thermodynamic performance of three-body near-field heat engines, we demonstrate that the power they supply can be substantially larger than that of two-body systems, showing so their strong potential for energy harvesting. Theoretical limits for energy and entropy fluxes in three-body systems are discussed and compared with their corresponding two-body counterparts. Such considerations confirm that the thermodynamic availability in energy-conversion processes driven by three-body photon tunneling can exceed the thermodynamic availability in two-body systems.

Latella, Ivan; Rubi, J Miguel; Biehs, Svend-Age; Ben-Abdallah, Philippe

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "wide body aircraft" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Overspinning a Black Hole with a Test Body  

Science Journals Connector (OSTI)

It has long been known that a maximally spinning black hole cannot be overspun by tossing in a test body. Here we show that if instead the black hole starts out with below maximal spin, then indeed overspinning can be achieved. We find that requirements on the size and internal structure of the test body can be met if the body carries in orbital but not spin angular momentum. Our analysis neglects radiative and self-force effects, which may prevent the overspinning.

Ted Jacobson and Thomas P. Sotiriou

2009-09-28T23:59:59.000Z

482

Potential and prospective implementation of carbon nanotubes on next generation aircraft and space vehicles: A review of current and expected applications in aerospace sciences  

Science Journals Connector (OSTI)

Abstract Carbon nanotubes have instigated the interest of many different scientific fields since their authenticated introduction, more than two decades ago. Particularly in aerospace applications, the potential implementations of these advanced materials have been predicted to have a large impact on future aircraft and space vehicles, mainly due to their distinct features, which include superior mechanical, thermal and electrical properties. This article provides the very first consolidated review of the imminent prospects of utilizing carbon nanotubes and nanoparticles in aerospace sciences, based on their recent implementations and predicted future applications. Explicitly, expected carbon nanotube employment in aeronautics and astronautics are identified for commercial aircraft, military aircraft, rotorcraft, unmanned aerial vehicles, satellites, and space launch vehicles. Attention is devoted to future utilization of carbon nanotubes, which may comprise hydrogen storage encapsulation, composite material implementation, lightning protection for aircraft, aircraft icing mitigation, reduced weight of airframes/satellites, and alleviation of challenges related to future space launch. This study further sheds light onto recent actualized implementations of carbon nanotubes in aerospace applications, as well as current and prospective challenges related to their usage in aerospace sciences, encompassing health and safety hazards, large scale manufacturing, achievement of optimum properties, recycling, and environmental impacts.

Omid Gohardani; Maialen Chapartegui Elola; Cristina Elizetxea

2014-01-01T23:59:59.000Z

483

Investigating the influence of media on male body image: in search of a potential moderator  

E-Print Network [OSTI]

of all three of the body image assessment measures (Body Image Assessment, BIA; Body Morph Assessment, BMA; and Somatomorphic Matrix, SM) in measuring various aspects of male body image. The BIA and BMA were mainly sensitive to measuring "thinness...

Mignogna, Joseph

2013-02-22T23:59:59.000Z

484

Control of underactuated fluid-body systems with real-time particle image velocimetry  

E-Print Network [OSTI]

Controlling the interaction of a robot with a fluid, particularly when the desired behavior is intimately related to the dynamics of the fluid, is a difficult and important problem. High-performance aircraft cannot ignore ...

Roberts, John W., Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

485

Small Body Landings Using Autonomous Onboard Optical Navigation  

Science Journals Connector (OSTI)

Spacecraft landings on small bodies (asteroids and comets) present special challenges from a navigation perspective ... , with the resultant accuracy requirement to target landing areas fairly tight. Because the ...

Shyam Bhaskaran; Sumita Nandi…

2011-07-01T23:59:59.000Z

486

TRAINING THE STAFF OF THE REGULATORY BODY FOR NUCLEAR FACILITIES:  

E-Print Network [OSTI]

Training the staff of the regulatory body for nuclear facilities: A competency framework November 2001The originating Section of this publication in the IAEA was:

Wagramer Strasse; A Competency Framework

487

Degradation of pure magnesium alloys in simulated body fluid.  

E-Print Network [OSTI]

??Biodegradable bone implants have the ability to be resorbed and removed from the human body after the healing process. Polymers and ceramics are common biodegradable… (more)

Hodaeian, Hamidreza

2013-01-01T23:59:59.000Z

488

Essential Body of Knowledge (EBK) | Department of Energy  

Office of Environmental Management (EM)

Essential Body of Knowledge (EBK) DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY EBK: CORE COMPETENCY TRAINING REQUIREMENTS: CA...

489

Levy flights in the three-body problem  

E-Print Network [OSTI]

Notwithstanding a three-centennial progress in studies of the three-body problem, disruption of a three-body gravitational system still remains an enigmatic dynamical process. We consider statistics of the disruption and Lyapunov times in a general hierarchical three-body problem. We show that at the edge of disruption the orbital periods of the escaping body exhibit L\\'evy flights. Due to them, the survival probability is heavy-tailed with the power-law index equal to -2/3, while the relation between the Lyapunov and disruption times is quasilinear.

Shevchenko, Ivan I

2009-01-01T23:59:59.000Z

490

Hanford's Robust Safety Culture Gains One More Site-Wide Safety Standard  

Broader source: Energy.gov (indexed) [DOE]

Robust Safety Culture Gains One More Site-Wide Safety Robust Safety Culture Gains One More Site-Wide Safety Standard Hanford's Robust Safety Culture Gains One More Site-Wide Safety Standard August 2, 2012 - 12:00pm Addthis Media Contacts Michael Turner, MSA Michael_J_Turner@rl.gov 509-376-2872 Cameron Hardy, DOE Cameron.Hardy@rl.doe.gov 509-376-5365 RICHLAND, Wash. - The safety of the Hanford Site workforce has been bolstered with another program added to the list of Site-wide Safety Standards. The latest Site-wide Safety Standard covers Fall Protection. The innovative Hanford Site-wide Safety Standards program combines the once diverse programs of the various site contractors, and streamlines them into a single safety program. Designed to improve the safety of Hanford's mobile workforce, the Site-wide Safety Standards effort has incorporated the best practices from

491

Complete measurement of three-body photodisintegration of {sup 3}He for photon energies between 0.35 and 1.55 GeV  

SciTech Connect (OSTI)

The three-body photodisintegration of {sup 3}He has been measured with the CLAS detector at Jefferson Lab, using tagged photons of energies between 0.35 GeV and 1.55 GeV. The large acceptance of the spectrometer allowed us for the first time to cover a wide momentum and angular range for the two outgoing protons. Three kinematic regions dominated by either two- or three-body contributions have been distinguished and analyzed. The measured cross sections have been compared with results of a theoretical model, which, in certain kinematic ranges, have been found to be in reasonable agreement with the data.

Niccolai, S. [CEA-Saclay, Service de Physique Nucleaire, F91191 Gif-sur-Yvette (France); George Washington University, Washington, DC 20052 (United States); Audit, G.; Laget, J.M.; Marchand, C.; Morand, L.; Morrow, S.A.; Sabatie, F. [CEA-Saclay, Service de Physique Nucleaire, F91191 Gif-sur-Yvette (France); Berman, B.L.; Strauch, S.; Benmouna, N.; Briscoe, W.J.; Dhuga, K.S.; Feldman, G.; Heimberg, P.; Ilieva, Y.Y.; Juengst, H.G.; Lima, A.C.S.; Murphy, L.Y.; O'Rielly, G.V.; Philips, S.A. [George Washington University, Washington, D.C. 20052 (United States)] [and others

2004-12-01T23:59:59.000Z

492

Stereotactic Body Radiotherapy for Primary Hepatocellular Carcinoma  

SciTech Connect (OSTI)

Purpose: To evaluate the safety and efficacy of stereotactic body radiotherapy (SBRT) for the treatment of primary hepatocellular carcinoma (HCC). Methods and Materials: From 2005 to 2009, 60 patients with liver-confined HCC were treated with SBRT at the Indiana University Simon Cancer Center: 36 Child-Turcotte-Pugh (CTP) Class A and 24 CTP Class B. The median number of fractions, dose per fraction, and total dose, was 3, 14 Gy, and 44 Gy, respectively, for those with CTP Class A cirrhosis and 5, 8 Gy, and 40 Gy, respectively, for those with CTP Class B. Treatment was delivered via 6 to 12 beams and in nearly all cases was prescribed to the 80% isodose line. The records of all patients were reviewed, and treatment response was scored according to Response Evaluation Criteria in Solid Tumors v1.1. Toxicity was graded according to the Common Terminology Criteria for Adverse Events v4.0. Local control (LC), time to progression (TTP), progression-free survival (PFS), and overall survival (OS) were calculated according to the method of Kaplan and Meier. Results: The median follow-up time was 27 months, and the median tumor diameter was 3.2 cm. The 2-year LC, PFS, and OS were 90%, 48%, and 67%, respectively, with median TTP of 47.8 months. Subsequently, 23 patients underwent transplant, with a median time to transplant of 7 months. There were no {>=}Grade 3 nonhematologic toxicities. Thirteen percent of patients experienced an increase in hematologic/hepatic dysfunction greater than 1 grade, and 20% experienced progression in CTP class within 3 months of treatment. Conclusions: SBRT is a safe, effective, noninvasive option for patients with HCC {<=}6 cm. As such, SBRT should be considered when bridging to transplant or as definitive therapy for those ineligible for transplant.

Andolino, David L., E-mail: dandolin@iupui.edu [Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN (United States); Johnson, Cynthia S. [Department of Biostatistics, Indiana University School of Medicine, Indianapolis, IN (United States); Maluccio, Mary [Department of Surgery, Indiana University School of Medicine, Indianapolis, IN (United States); Kwo, Paul [Department of Medicine, Indiana University School of Medicine, Indianapolis, IN (United States); Tector, A. Joseph [Department of Surgery, Indiana University School of Medicine, Indianapolis, IN (United States); Zook, Jennifer; Johnstone, Peter A.S.; Cardenes, Higinia R. [Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN (United States)

2011-11-15T23:59:59.000Z

493

Many-Body Contributions to Green's Functions and Casimir Energies  

E-Print Network [OSTI]

The multiple scattering formalism is used to extract irreducible N-body parts of Green's functions and Casimir energies describing the interaction of N objects that are not necessarily mutually disjoint. The irreducible N-body scattering matrix is expressed in terms of single-body transition matrices. The irreducible N-body Casimir energy is the trace of the corresponding irreducible N-body part of the Green's function. This formalism requires the solution of a set of linear integral equations. The irreducible three-body Green's function and the corresponding Casimir energy of a massless scalar field interacting with potentials are obtained and evaluated for three parallel semitransparent plates. When Dirichlet boundary conditions are imposed on a plate the Green's function and Casimir energy decouple into contributions from two disjoint regions. We also consider weakly interacting triangular--and parabolic-wedges placed atop a Dirichlet plate. The irreducible three-body Casimir energy of a triangular--and parabolic-wedge is minimal when the shorter side of the wedge is perpendicular to the Dirichlet plate. The irreducible three-body contribution to the vacuum energy is finite and positive in all the cases studied.

K. V. Shajesh; M. Schaden

2011-03-15T23:59:59.000Z

494

Global warming and body mass decline in Israeli passerine birds  

E-Print Network [OSTI]

Global warming and body mass decline in Israeli passerine birds Yoram Yom-Tov Department of Zoology,Tel Aviv University,Tel Aviv 69978, Israel ( yomtov@post.tau.ac.il) Global warming may a¡ect the physiology in body mass and tarsus length are due to global warming and also in accordance with Bergmann's rule

Yom-Tov, Yoram

495

Temperature alters food web body-size structure  

Science Journals Connector (OSTI)

...ecology 1001 60 69 Temperature alters food web body-size structure Jean P. Gibert John...The consequences of these effects for food web structure are unclear because the relationships between temperature and aspects of food web structure such as predator-prey body-size...

2014-01-01T23:59:59.000Z

496

Leveraging Human Mobility for Communication in Body Area Networks  

Science Journals Connector (OSTI)

When a person is walking the RF signal strength of an on-body communication link may exhibit significant fluctuation with peak-to-peak amplitudes beyond 20 dB. Instantaneous signal strength may be noisy, but the smoothed signal typically exhibits a period ... Keywords: MAC, Wireless sensor networks, body area networks, mobility, packet scheduling, simplex algorithm

Jan-Hinrich Hauer

2014-04-01T23:59:59.000Z

497

A Comprehensive Overview of Wireless Body Area Networks WBAN  

Science Journals Connector (OSTI)

In recent years, the wireless body area network WBAN has emerged as a new technology for e-healthcare applications. The WBANs promise to revolutionize health monitoring. However, this technology remains in the first stages and much research is underway. ... Keywords: Healthcare, IEEE802.15.6, MAC, Security, Sensors, Wireless Body Area Networks, Wireless Sensors Networks

Nourchene Bradai, Lamia Chaari, Lotfi Kamoun

2011-07-01T23:59:59.000Z

498

Machines and the Body between Anatomy and Pathology  

E-Print Network [OSTI]

Machines and the Body between Anatomy and Pathology Domenico Bertoloni Meli* 1. Introduction of anatomists sought to explain the operations of the body in terms of machines of varying nature and complexity. These machines responded to shifting criteria of intelligibility at the time: whereas Aristotelian or Galenic

Bertoloni Meli, Domenico

499

Original article Whole-body biodistribution and radiation dosimetry  

E-Print Network [OSTI]

Original article Whole-body biodistribution and radiation dosimetry estimates for the PET dopamine subject per year. Nucl Med Commun 25:737­742 c 2004 Lippincott Williams & Wilkins. Nuclear Medicine Communications 2004, 25:737­742 Keywords: 18 F-FECNT, dopamine transporter, dosimetry, whole-body bio

Shen, Jun

500

FRAMES User Defined Body Burden Concentration File Module Documentation  

SciTech Connect (OSTI)

The Framework for Risk Analysis in Multimedia Environmental Systems (FRAMES) Body Burden Concentration File (BBF) contains time-varying, instantaneous, constituent concentrations for body burden by contaminant. This report contains the requirements for this file and will be used by software engineers and testers to ensure that the file inputs properly.

Pelton, Mitchell A.; Rutz, Frederick C.; Eslinger, Melany A.; Gelston, Gariann M.

2001-06-01T23:59:59.000Z