Powered by Deep Web Technologies
Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

AIAA-982909 Characterization of the Near Wake of a Helicopter Rotor*  

E-Print Network [OSTI]

of Technology. Abstract Vortex characteristics in the near wake of a 2-bladed teetering rotor in steady forward to be repeatable to within 1° of rotor revolution. Velocity was measured in the planes intersected by the rotor-blade blade side of the rotor. The axial velocity in all cases is wake-like, being directed towards the blade

2

Separators for flywheel rotors  

DOE Patents [OSTI]

A separator forms a connection between the rotors of a concentric rotor assembly. This separator allows for the relatively free expansion of outer rotors away from inner rotors while providing a connection between the rotors that is strong enough to prevent disassembly. The rotor assembly includes at least two rotors referred to as inner and outer flywheel rings or rotors. This combination of inner flywheel ring, separator, and outer flywheel ring may be nested to include an arbitrary number of concentric rings. The separator may be a segmented or continuous ring that abuts the ends of the inner rotor and the inner bore of the outer rotor. It is supported against centrifugal loads by the outer rotor and is affixed to the outer rotor. The separator is allowed to slide with respect to the inner rotor. It is made of a material that has a modulus of elasticity that is lower than that of the rotors. 10 figs.

Bender, D.A.; Kuklo, T.C.

1998-07-07T23:59:59.000Z

3

Separators for flywheel rotors  

DOE Patents [OSTI]

A separator forms a connection between the rotors of a concentric rotor assembly. This separator allows for the relatively free expansion of outer rotors away from inner rotors while providing a connection between the rotors that is strong enough to prevent disassembly. The rotor assembly includes at least two rotors referred to as inner and outer flywheel rings or rotors. This combination of inner flywheel ring, separator, and outer flywheel ring may be nested to include an arbitrary number of concentric rings. The separator may be a segmented or continuous ring that abuts the ends of the inner rotor and the inner bore of the outer rotor. It is supported against centrifugal loads by the outer rotor and is affixed to the outer rotor. The separator is allowed to slide with respect to the inner rotor. It is made of a material that has a modulus of elasticity that is lower than that of the rotors.

Bender, Donald A. (Dublin, CA); Kuklo, Thomas C. (Oakdale, CA)

1998-01-01T23:59:59.000Z

4

Revolution in Detection Affairs  

SciTech Connect (OSTI)

The detection of nuclear or radioactive materials for homeland or national security purposes is inherently difficult. This is one reason detection efforts must be seen as just one part of an overall nuclear defense strategy which includes, inter alia, material security, detection, interdiction, consequence management and recovery. Nevertheless, one could argue that there has been a revolution in detection affairs in the past several decades as the innovative application of new technology has changed the character and conduct of detection operations. This revolution will likely be most effectively reinforced in the coming decades with the networking of detectors and innovative application of anomaly detection algorithms.

Stern W.

2013-11-02T23:59:59.000Z

5

Single Rotor Turbine  

DOE Patents [OSTI]

A rotor for use in turbine applications has a centrifugal compressor having axially disposed spaced apart fins forming passages and an axial turbine having hollow turbine blades interleaved with the fins and through which fluid from the centrifugal compressor flows.

Platts, David A. (Los Alamos, NM)

2004-10-26T23:59:59.000Z

6

Revolutionen i Egypten; The Revolution in Egypt.  

E-Print Network [OSTI]

?? This study examines whether social media had an influence on the revolution in Egypt. Social media was an important tool for the revolution since… (more)

Stamm'ler Jaliff, Pernilla

2011-01-01T23:59:59.000Z

7

Review: Structuring an Energy Technology Revolution  

E-Print Network [OSTI]

Structuring an Energy Technology Revolution By Charles WeissB. Structuring an Energy Technology Revolution. Cambridge,increases in spending on energy technology and innovation,

Kunnas, Jan

2010-01-01T23:59:59.000Z

8

Polygonal shaft hole rotor  

DOE Patents [OSTI]

A laminated rotor for an induction motor has a plurality of ferro-magnetic laminations mounted axially on a rotor shaft. Each of the plurality of laminations has a central aperture in the shape of a polygon with sides of equal length. The laminations are alternatingly rotated 180.degree. from one another so that the straight sides of the polygon shaped apertures are misaligned. As a circular rotor shaft is press fit into a stack of laminations, the point of maximum interference occurs at the midpoints of the sides of the polygon (i.e., at the smallest radius of the central apertures of the laminations). Because the laminates are alternatingly rotated, the laminate material at the points of maximum interference yields relatively easily into the vertices (i.e., the greatest radius of the central aperture) of the polygonal central aperture of the next lamination as the shaft is inserted into the stack of laminations. Because of this yielding process, the amount of force required to insert the shaft is reduced, and a tighter fit is achieved.

Hussey, John H. (St. Louis, MO); Rose, John Scott (Alton, IL); Meystrik, Jeffrey J. (Webster Groves, MO); White, Kent Lee (Maryland Heights, MO)

2001-01-23T23:59:59.000Z

9

Single rotor turbine engine  

DOE Patents [OSTI]

There has been invented a turbine engine with a single rotor which cools the engine, functions as a radial compressor, pushes air through the engine to the ignition point, and acts as an axial turbine for powering the compressor. The invention engine is designed to use a simple scheme of conventional passage shapes to provide both a radial and axial flow pattern through the single rotor, thereby allowing the radial intake air flow to cool the turbine blades and turbine exhaust gases in an axial flow to be used for energy transfer. In an alternative embodiment, an electric generator is incorporated in the engine to specifically adapt the invention for power generation. Magnets are embedded in the exhaust face of the single rotor proximate to a ring of stationary magnetic cores with windings to provide for the generation of electricity. In this alternative embodiment, the turbine is a radial inflow turbine rather than an axial turbine as used in the first embodiment. Radial inflow passages of conventional design are interleaved with radial compressor passages to allow the intake air to cool the turbine blades.

Platts, David A. (Los Alamos, NM)

2002-01-01T23:59:59.000Z

10

Homopolar motor with dual rotors  

DOE Patents [OSTI]

A homopolar motor has a field rotor mounted on a frame for rotation in a first rotational direction and for producing an electromagnetic field, and an armature rotor mounted for rotation on said frame within said electromagnetic field and in a second rotational direction counter to said first rotational direction of said field rotor. The two rotors are coupled through a 1:1 gearing mechanism, so as to travel at the same speed but in opposite directions. This doubles the output voltage and output power, as compared to a motor in which only the armature is rotated. Several embodiments are disclosed. 7 figs.

Hsu, J.S.

1998-12-01T23:59:59.000Z

11

Sandia National Laboratories: National Rotor Testbed Functional...  

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

of the National Rotor Testbed: An Aeroelastically Relevant Research-Scale Wind Turbine Rotor." Approximately 60 researchers from various institutions and countries attended...

12

Revolution in nuclear detection affairs  

SciTech Connect (OSTI)

The detection of nuclear or radioactive materials for homeland or national security purposes is inherently difficult. This is one reason detection efforts must be seen as just one part of an overall nuclear defense strategy which includes, inter alia, material security, detection, interdiction, consequence management and recovery. Nevertheless, one could argue that there has been a revolution in detection affairs in the past several decades as the innovative application of new technology has changed the character and conduct of detection operations. This revolution will likely be most effectively reinforced in the coming decades with the networking of detectors and innovative application of anomaly detection algorithms.

Stern, Warren M. [Nonproliferation and National Security Department, Brookhaven National Laboratory, Upton, New York (United States)

2014-05-09T23:59:59.000Z

13

IT Revolution in Learning Technology Riichiro Mizoguchi  

E-Print Network [OSTI]

IT Revolution in Learning Technology Riichiro Mizoguchi The Institute of Scientific and Industrial@ei.sanken.osaka-u.ac.jp Introduction The change has already begun. It is not a simple change but a Revolution in the sense of speed and its impact. It is called IT(Information Technology) revolution and has been giving great impacts

Mizoguchi, Riichiro

14

Post-industrial-revolution HCI Colin Johnson  

E-Print Network [OSTI]

Post-industrial-revolution HCI Colin Johnson University of Kent Computing Laboratory Canterbury is akin to the state of manufacturing prior to the industrial revolution. It is suggested that eventually an industrial revolution will occur in programming through the use of automated program generation tools, which

Kent, University of

15

Wind turbine rotor aileron  

DOE Patents [OSTI]

A wind turbine has a rotor with at least one blade which has an aileron which is adjusted by an actuator. A hinge has two portions, one for mounting a stationary hinge arm to the blade, the other for coupling to the aileron actuator. Several types of hinges can be used, along with different actuators. The aileron is designed so that it has a constant chord with a number of identical sub-assemblies. The leading edge of the aileron has at least one curved portion so that the aileron does not vent over a certain range of angles, but vents if the position is outside the range. A cyclic actuator can be mounted to the aileron to adjust the position periodically. Generally, the aileron will be adjusted over a range related to the rotational position of the blade. A method for operating the cyclic assembly is also described.

Coleman, Clint (Warren, VT); Kurth, William T. (Warren, VT)

1994-06-14T23:59:59.000Z

16

Probabilistic analysis of meanline compressor rotor performance  

E-Print Network [OSTI]

This thesis addresses variability in aerodynamic performance of a compressor rotor due to geometric variation. The performance of the rotor is computed using a meanline model that includes the effect of tip clearance ...

Fitzgerald, Nathan Andrew, 1980-

2004-01-01T23:59:59.000Z

17

Turbomachine rotor with improved cooling  

DOE Patents [OSTI]

A gas turbine rotor has an essentially closed loop cooling air scheme in which cooling air drawn from the compressor discharge air that is supplied to the combustion chamber is further compressed, cooled, and then directed to the aft end of the turbine rotor. Downstream seal rings attached to the downstream face of each rotor disc direct the cooling air over the downstream disc face, thereby cooling it, and then to cooling air passages formed in the rotating blades. Upstream seal rings attached to the upstream face of each disc direct the heated cooling air away from the blade root while keeping the disc thermally isolated from the heated cooling air. From each upstream seal ring, the heated cooling air flows through passages in the upstream discs and is then combined and returned to the combustion chamber from which it was drawn.

Hultgren, Kent Goran (Winter Park, FL); McLaurin, Leroy Dixon (Winter Springs, FL); Bertsch, Oran Leroy (Titusville, FL); Lowe, Perry Eugene (Oviedo, FL)

1998-01-01T23:59:59.000Z

18

Turbomachine rotor with improved cooling  

DOE Patents [OSTI]

A gas turbine rotor has an essentially closed loop cooling air scheme in which cooling air drawn from the compressor discharge air that is supplied to the combustion chamber is further compressed, cooled, and then directed to the aft end of the turbine rotor. Downstream seal rings attached to the downstream face of each rotor disc direct the cooling air over the downstream disc face, thereby cooling it, and then to cooling air passages formed in the rotating blades. Upstream seal rings attached to the upstream face of each disc direct the heated cooling air away from the blade root while keeping the disc thermally isolated from the heated cooling air. From each upstream seal ring, the heated cooling air flows through passages in the upstream discs and is then combined and returned to the combustion chamber from which it was drawn. 5 figs.

Hultgren, K.G.; McLaurin, L.D.; Bertsch, O.L.; Lowe, P.E.

1998-05-26T23:59:59.000Z

19

Sandia National Laboratories: Semiconductor Revolution  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErikGroundbreaking Work onClimateSemiconductor Revolution Semiconductor

20

Rotor Blades and Ground Effect Richard Purvis  

E-Print Network [OSTI]

Rotor Blades and Ground Effect Richard Purvis Department of Mathematics University College London to examine various aspects of rotor blade flows and ground effect. It explores two- and three- dimensional flows, generally concentrating upon regimes that have a degree of rel- evance to typical rotor blade

Purvis, Richard

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Politics of oil and revolution in Iran  

SciTech Connect (OSTI)

Elements of continuity and change in Iran's post-revolution oil strategy, the domestic forces that helped to shape oil policy, the regional repercussions of the Iranian revolution, and the manner in which the Iranian authorities have reacted to changes in the oil market over the past three and half years are examined.

Bakhash, S.

1982-01-01T23:59:59.000Z

22

Rotor blades for turbine engines  

DOE Patents [OSTI]

A tip shroud that includes a plurality of damping fins, each damping fin including a substantially non-radially-aligned surface that is configured to make contact with a tip shroud of a neighboring rotor blade. At least one damping fin may include a leading edge damping fin and at least one damping fin may include a trailing edge damping fin. The leading edge damping fin may be configured to correspond to the trailing edge damping fin.

Piersall, Matthew R; Potter, Brian D

2013-02-12T23:59:59.000Z

23

Method for manufacturing a rotor having superconducting coils  

DOE Patents [OSTI]

A method and apparatus for manufacturing a rotor for use with a rotating machine is provided that employs a superconducting coil on the rotor. An adhesive is applied to an outer surface of the rotor body, which may include a groove disposed within an outer surface of the rotor body. A superconducting coil is then mounted onto the rotor body such that the adhesive bonds the superconducting coil to the rotor body.

Driscoll, David I. (South Euclid, OH); Shoykhet, Boris A. (Beachwood, OH)

2001-01-01T23:59:59.000Z

24

SMART Wind Turbine Rotor: Design and Field Test | Department...  

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

Design and Field Test SMART Wind Turbine Rotor: Design and Field Test This report documents the design, fabrication, and testing of the SMART Wind Turbine Rotor. This work...

25

Multiple piece turbine rotor blade  

DOE Patents [OSTI]

A multiple piece turbine rotor blade with a shell having an airfoil shape and secured between a spar and a platform with the spar including a tip end piece. a snap ring fits around the spar and abuts against the spar tip end piece on a top side and abuts against a shell on the bottom side so that the centrifugal loads from the shell is passed through the snap ring and into the spar and not through a tip cap dovetail slot and projection structure.

Jones, Russell B; Fedock, John A

2013-05-21T23:59:59.000Z

26

Optimum balancing for flexible rotor  

E-Print Network [OSTI]

for the donation of vibration pick-ups and the loan of precious equipment. A special appreciation is extended to my friend, Miss Mei Ou-Yang, for her assistance, encouragement and unselfish support during the preparation and completion of this project. Last... Balancing Fig. 9 Typical Phase Lag Between Force and Vibration Amplitude Chart 14 20 Fig. 10 Typical Principal Modes for a Symmetric and Uniform Shaft 21 Fig. ll Test Rig Setup Fig. 12 Typical Rotor, Probe and Probe Stand Fig. 13 Critical Speed VS...

Fu, Her James

1975-01-01T23:59:59.000Z

27

Radial-radial single rotor turbine  

DOE Patents [OSTI]

A rotor for use in turbine applications has a radial compressor/pump having radially disposed spaced apart fins forming passages and a radial turbine having hollow turbine blades interleaved with the fins and through which fluid from the radial compressor/pump flows. The rotor can, in some applications, be used to produce electrical power.

Platts, David A. (Los Alamos, NM)

2006-05-16T23:59:59.000Z

28

Acoustic modulation effect of rotating stator/rotor interaction noise  

E-Print Network [OSTI]

order, B(k) is the number of rotor blades, (k) is the angular velocity of the rotor, (l) is the angular on the rotor blades and on the fixed parts. According to the Ffowcs-Williams and Hawk- ings analogy comes from the periodic forces on the rotor blades and the forces on the other static parts of the fan

Boyer, Edmond

29

Safety Warnings Quad Rotors (Quad-Pilot 2 F.3)  

E-Print Network [OSTI]

Safety Warnings Quad Rotors (Quad-Pilot 2 F.3) The quad rotor "quad-pilot 2 F.3" is a complicated accidents from taking place. Operation of the quad rotor should be performed in a safe and responsible not accept any liability for damage and consequent damage arising from the use of the quad rotors, as we have

Langendoen, Koen

30

Sensible Solar Fueling Energy Revolution in Georgia | Department...  

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

Sensible Solar Fueling Energy Revolution in Georgia Sensible Solar Fueling Energy Revolution in Georgia May 14, 2010 - 3:35pm Addthis Joshua DeLung During his recent commencement...

31

(M)other Russia: Evolution or Revolution  

E-Print Network [OSTI]

(M)other Russia: Evolution or Revolution Twenty Years since the Collapse of Communism An inter.music.sas.ac.uk ÂŁ25 (ÂŁ15 student) Keynote speakers: Sir Rodric Braithwaite (former UK Ambassador to Russia) Vladimir Ambassador to Russia: Russia Today Coffee 11:00 Irina Souch (University of Amsterdam): Double Thinking

Miranda, Eduardo Reck

32

GREEN FLUORESCENT PROTEIN The green revolution  

E-Print Network [OSTI]

GREEN FLUORESCENT PROTEIN The green revolution Green fluorescent protein allows gene expression a fluorescent product when expressed. Just such a molecule, green fluorescent protein (GFP), has recently green light when disturbed (often seen when riding in a boat at night). In Aequorea, the green

Stearns, Tim

33

Interlayer toughening of fiber composite flywheel rotors  

DOE Patents [OSTI]

An interlayer toughening mechanism to mitigate the growth of damage in fiber composite flywheel rotors for long application. The interlayer toughening mechanism may comprise one or more tough layers composed of high-elongation fibers, high-strength fibers arranged in a woven pattern at a range from 0.degree. to 90.degree. to the rotor axis and bound by a ductile matrix material which adheres to and is compatible with the materials used for the bulk of the rotor. The number and spacing of the tough interlayers is a function of the design requirements and expected lifetime of the rotor. The mechanism has particular application in uninterruptable power supplies, electrical power grid reservoirs, and compulsators for electric guns, as well as electromechanical batteries for vehicles.

Groves, Scott E. (Brentwood, CA); Deteresa, Steven J. (Livermore, CA)

1998-01-01T23:59:59.000Z

34

Interlayer toughening of fiber composite flywheel rotors  

DOE Patents [OSTI]

An interlayer toughening mechanism is described to mitigate the growth of damage in fiber composite flywheel rotors for long application. The interlayer toughening mechanism may comprise one or more tough layers composed of high-elongation fibers, high-strength fibers arranged in a woven pattern at a range from 0{degree} to 90{degree} to the rotor axis and bound by a ductile matrix material which adheres to and is compatible with the materials used for the bulk of the rotor. The number and spacing of the tough interlayers is a function of the design requirements and expected lifetime of the rotor. The mechanism has particular application in uninterruptable power supplies, electrical power grid reservoirs, and compulsators for electric guns, as well as electromechanical batteries for vehicles. 2 figs.

Groves, S.E.; Deteresa, S.J.

1998-07-14T23:59:59.000Z

35

Wind turbine rotor hub and teeter joint  

DOE Patents [OSTI]

A rotor hub is provided for coupling a wind turbine rotor blade and a shaft. The hub has a yoke with a body which is connected to the shaft, and extension portions which are connected to teeter bearing blocks, each of which has an aperture. The blocks are connected to a saddle which envelops the rotor blade by one or two shafts which pass through the apertures in the bearing blocks. The saddle and blade are separated by a rubber interface which provides for distribution of stress over a larger portion of the blade. Two teeter control mechanisms, which may include hydraulic pistons and springs, are connected to the rotor blade and to the yoke at extension portions. These control mechanisms provide end-of-stroke damping, braking, and stiffness based on the teeter angle and speed of the blade.

Coleman, Clint (Warren, VT); Kurth, William T. (Warren, VT); Jankowski, Joseph (Stowe, VT)

1994-10-11T23:59:59.000Z

36

A carbon nanotube bearing and Stodola rotor  

E-Print Network [OSTI]

A nano-scale rotor supported on a cantilevered multi-wall carbon nanotube (MWNT) shaft (Stodola configuration) is proposed. The nanotube is also expected to function as the bearing, since individual walls of a MWNT are not ...

Cook, Eugene Hightower

2008-01-01T23:59:59.000Z

37

A reduced Blade-Vortex Interaction rotor  

E-Print Network [OSTI]

A REDUCED BLADE - VORTEX INTERACTION ROTOR A Thesis by SOMNATH MANI . Submitted to the Offic of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1996 Major... Subject: Aerospace Engineering A REDUCED BLADE - VORTEX INTERACTION ROTOR A Thesis by SOMNATH MANI Submitted to Texas A@M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content...

Mani, Somnath

2012-06-07T23:59:59.000Z

38

Turbine bearings and rotor dynamics workshop: proceedings  

SciTech Connect (OSTI)

An EPRI workshop to address turbine bearing reliability improvement and rotor dynamics was co-hosted by Detroit Edison in Dearborn, Michigan on September 8-10, 1982. The 136 attendees represented a broad spectrum of US utilities, equipment manufacturers, and consultants, as well as representatives from England, Japan, and Switzerland. These proceedings contain the text of the formal presentations as well as summaries of the working group sessions which were devoted to topics of particular interest to the workshop participants. Formal presentations were organized under the following general session titles: utility experience and advancements in turbine bearing and lubrication systems; recent advancements in turbine bearing and lubrication systems; utility experience and advancements in turbine-generator rotor dynamics; and recent advancements in turbine-generator rotor dynamics. In addition to the technical presentations, working group sessions were held on selected topics relevant to turbine bearing reliability improvement and rotor dynamics. These groups provided a forum for engineers to exchange ideas and information in a less formal environment. The discussions provided attendees with an opportunity to discuss key issues in more detail and address subjects not covered in the formal presentations. The subjects of these working groups were: rotor dynamic analysis and problem solving; vibration signature analysis and field balancing; oil contamination monitoring and control; and operation and maintenance practices. Individual papers have been entered individually into EDB and ERA.

Brown, R.G.; Quilliam, J.F. (eds.)

1985-06-01T23:59:59.000Z

39

Variable speed operation of generators with rotor-speed feedback in wind power applications  

SciTech Connect (OSTI)

The use of induction generators in wind power applications has been common since the early development of the wind industry. Most of these generators operate at fixed frequency and are connected directly to the utility grid. Unfortunately, this mode of operation limits the rotor speed to a specific rpm. Variable-speed operation is preferred in order to facilitate maximum energy capture over a wide range of wind speeds. This paper explores variable-speed operating strategies for wind turbine applications. The objectives are to maximize energy production, provide controlled start-up and reduce torque loading. This paper focuses on optimizing the energy captured by operating at maximum aerodynamic efficiency at any wind speed. The control strategy we analyze uses rotor speed and generator power as the feedback signals. In the normal operating region, rotor speed is used to compute a target power that corresponds to optimum operation. With power as the control objective, the power converter and generator are controlled to track the target power at any rpm. Thus, the torque-speed characteristic of the generator is shaped to optimize the energy capture. The target power is continuously updated at any rpm. in extreme areas of the operating envelope, during start-up, shutdown, generator overload, or overspeed, different strategies driven by other system considerations must be used.

Muljadi, E.; Butterfield, C.P.; Migliore, P.

1995-11-01T23:59:59.000Z

40

Variable speed operation of generators with rotor-speed feedback in wind power applications  

SciTech Connect (OSTI)

The use of induction generators in wind power applications has been common since the early development of the wind industry. Most of these generators operate at fixed frequency and are connected directly to the utility grid. Unfortunately, this mode of operation limits the rotor speed to a specific rpm. Variable-speed operation is preferred in order to facilitate maximum energy capture over a wide range of wind speeds. This paper explores variable-speed operating strategies for wind turbine applications. The objectives are to maximize energy production, provide controlled start-up and reduce torque loading. This paper focuses on optimizing the energy captured by operating at maximum aerodynamic efficiency at any wind speed. The control strategy analyzed uses rotor speed and generator power as the feedback signals. In the normal operating region, rotor speed is used to compute a target power that corresponds to optimum operation. With power as the control objective, the power converter and generator are controlled to track the target power at any rpm. Thus, the torque-speed characteristic of the generator is shaped to optimize the energy capture. The target power is continuously updated at any rpm. In extreme areas of the operating envelope, during start-up, shutdown, generator overload, or overspeed, different strategies driven by other system considerations must be used.

Muljadi, E.; Butterfield, C.P.; Migliore, P. [National Renewable Energy Lab., Golden, CO (United States). Wind Technology Div.

1996-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Variable speed operation of generators with rotor-speed feedback in wind power applications  

SciTech Connect (OSTI)

The use of induction generators in wind power applications has been common since the early development of the wind industry. Most of these generators operate at fixed frequency and are connected directly to the utility grid. Unfortunately, this mode of operation limits the rotor speed to a specific rpm. Variable speed operation is preferred in order to facilitate maximum energy capture over a wide range of wind speeds. This paper explores variable speed operating strategies for wind turbine applications. The objectives are to maximize energy production, provide controlled start-up, and reduce torque loading. This paper focuses on optimizing the energy captured by operating at maximum aerodynamic efficiency at any wind speed. The control strategy the authors analyze uses rotor speed and generator power as the feedback signals. In the normal operating region, rotor speed is used to compute a target power that corresponds to optimum operation. With power as the control objective, the power converter and generator are controlled to track the target power at any rpm. Thus, the torque-speed characteristic of the generator is shaped to optimize the energy capture. The target power is continuously updated at any rpm. In extreme areas of the operating envelope, during start-up, shutdown, generator overload, or overspeed, different strategies driven by other system considerations must be used.

Muljadi, E.; Butterfield, C.P.; Migliore, P. [National Renewable Energy Lab., Golden, CO (United States)

1996-11-01T23:59:59.000Z

42

active elevon rotor: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

43

active twist rotor: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

44

advanced turbocharger rotor: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

45

active flap rotor: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

46

advanced rotor systems: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

47

adiabatic rotor model: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

48

asymmetric rotor model: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

49

The cost of noise reduction in commercial tilt rotor aircraft  

E-Print Network [OSTI]

The relationship between direct operating cost and departure noise annoyance was developed for commercial tilt rotor aircraft. This was accomplished by generating a series of tilt rotor aircraft designs to meet various ...

Faulkner, Henry B.

1974-01-01T23:59:59.000Z

50

Accelerator dynamics of a fractional kicked rotor  

E-Print Network [OSTI]

It is shown that the Weyl fractional derivative can quantize an open system. A fractional kicked rotor is studied in the framework of the fractional Schrodinger equation. The system is described by the non-Hermitian Hamiltonian by virtue of the Weyl fractional derivative. Violation of space symmetry leads to acceleration of the orbital momentum. Quantum localization saturates this acceleration, such that the average value of the orbital momentum can be a direct current and the system behaves like a ratchet. The classical counterpart is a nonlinear kicked rotor with absorbing boundary conditions.

A. Iomin

2006-09-14T23:59:59.000Z

51

Variable diameter wind turbine rotor blades  

DOE Patents [OSTI]

A system and method for changing wind turbine rotor diameters to meet changing wind speeds and control system loads is disclosed. The rotor blades on the wind turbine are able to adjust length by extensions nested within or containing the base blade. The blades can have more than one extension in a variety of configurations. A cable winching system, a hydraulic system, a pneumatic system, inflatable or elastic extensions, and a spring-loaded jack knife deployment are some of the methods of adjustment. The extension is also protected from lightning by a grounding system.

Jamieson, Peter McKeich; Hornzee-Jones, Chris; Moroz, Emilian M.; Blakemore, Ralph W.

2005-12-06T23:59:59.000Z

52

Ultra-Micro Wave Rotor Investigations Florin Iancu, Janusz Piechna*  

E-Print Network [OSTI]

Nowowiejska Str., 00-665 Warsaw, Poland Abstract Ultra Micro Gas Turbines (UµGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords: PowerMEMS, wave rotor, ultra micro gas turbine, pressure exchanger, efficiency 1

MĂĽller, Norbert

53

Texas Fluid Dynamics Meeting, 2013 STABILITY OF ROTOR WAKES.  

E-Print Network [OSTI]

et al.(2000) [1] did eigenvalue stability analysis on multi-bladed helicopter rotor wakes and found, of multi-bladed helicopter rotor wake. Despite various analytical, numerical and flow visualiza- tion-scale four- bladed helicopter rotor in hover [6,7], revealed some impor- tant observations. Investigations

Tinney, Charles E.

54

Modeling of a rotor speed transient response with radial rubbing  

E-Print Network [OSTI]

by an accidental blade­off imbalance. In order to assess the angular deceleration of the rotor due to rubbingModeling of a rotor speed transient response with radial rubbing Sébastien Roques1 Institut deGill Univer- sity, 817 Sherbrooke St West, Montreal, Quebec H3A 2K6, Canada Abstract A rotor­stator model

Boyer, Edmond

55

On the Classification of Universal Rotor-Routers  

E-Print Network [OSTI]

The combinatorial theory of rotor-routers has connections with problems of statistical mechanics, graph theory, chaos theory, and computer science. A rotor-router network defines a deterministic walk on a digraph G in which a particle walks from a source vertex until it reaches one of several target vertices. Motivated by recent results due to Giacaglia et al., we study rotor-router networks in which all non-target vertices have the same type. A rotor type r is universal if every hitting sequence can be achieved by a homogeneous rotor-router network consisting entirely of rotors of type r. We give a conjecture that completely classifies universal rotor types. Then, this problem is simplified by a theorem we call the Reduction Theorem that allows us to consider only two-state rotors. A rotor-router network called the compressor, because it tends to shorten rotor periods, is introduced along with an associated algorithm that determines the universality of almost all rotors. New rotor classes, including boppy ro...

He, Xiaoyu

2011-01-01T23:59:59.000Z

56

Dynamics and Fatigue Damage of Wind Turbine Rotors  

E-Print Network [OSTI]

6 3 RiS0-Rr512 Dynamics and Fatigue Damage of Wind Turbine Rotors during Steady Operation Peter OF WIND TURBINE ROTORS DURING STEADY OPERATION Peter Hauge Madsen, Sten Frandsen, William E. Holley-carrying capacity of a wind turbine rotor with respect to short-term strength and material fatigue are presented

57

INTRODUCTION 1.1 Aerodynamics of Rotors in Forward Flight  

E-Print Network [OSTI]

1 CHAPTER I INTRODUCTION 1.1 Aerodynamics of Rotors in Forward Flight The prediction of rotor blade aerodynamic loads, especially in forward flight, requires accurate and efficient modeling of several distinct to the nonlinear interaction between the rotor aerodynamics, trim, aeroelasticity and blade dynamics. As stated

58

Rotor bore and turbine rotor wheel/spacer heat exchange flow circuit  

DOE Patents [OSTI]

In a turbine having closed-circuit steam-cooling passages about the rim of the rotor during steady-state operation, compressor discharge air is supplied to the rotor bore for passage radially outwardly into the wheel space cavities between the wheels and spacers. Communicating slots and channels in the spacers and wheels at circumferentially spaced positions enable egress of the compressor discharge air into the hot gas flow path. At turbine startup, cooling air flows through the closed-circuit steam passages to cool the outer rim of the rotor while compressor discharge air pre-warms the wheels and spacers. At steady-state, cooling steam is supplied in the closed-circuit steam-cooling passages and compressor discharge air is supplied through the bore and into the wheel space cavities to cool the rotor.

Caruso, Philip M. (Selkirk, NY); Eldrid, Sacheverel Quentin (Saratoga Springs, NY); Ladhani, Azad A. (Niskayuna, NY); DeMania, Alan Richard (Niskayuna, NY); Palmer, Gene David (Clifton Park, NY); Wilson, Ian David (Clifton Park, NY); Rathbun, Lisa Shirley (Scotia, NY); Akin, Robert Craig (Schenectady, NY)

2002-01-01T23:59:59.000Z

59

Voith High Efficiency HM Rotor Energy Data, A Repulper Rotor Design Case Study  

E-Print Network [OSTI]

A recently completed demonstration project, funded partly by the Wisconsin Focus on Energy program and Wisconsin Public Service Corporation, shows the effectiveness of an energy efficient repulper rotor design compared with that of a conventional...

Aue, J.; Fineran, B.

2005-01-01T23:59:59.000Z

60

Utilization of rotor kinetic energy storage for hybrid vehicles  

DOE Patents [OSTI]

A power system for a motor vehicle having an internal combustion engine, the power system comprises an electric machine (12) further comprising a first excitation source (47), a permanent magnet rotor (28) and a magnetic coupling rotor (26) spaced from the permanent magnet rotor and at least one second excitation source (43), the magnetic coupling rotor (26) also including a flywheel having an inertial mass to store kinetic energy during an initial acceleration to an operating speed; and wherein the first excitation source is electrically connected to the second excitation source for power cycling such that the flywheel rotor (26) exerts torque on the permanent magnet rotor (28) to assist braking and acceleration of the permanent magnet rotor (28) and consequently, the vehicle. An axial gap machine and a radial gap machine are disclosed and methods of the invention are also disclosed.

Hsu, John S. (Oak Ridge, TN)

2011-05-03T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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.


61

IT Complexity Revolution: Intelligent Tools for the Globalised World Development  

E-Print Network [OSTI]

IT Complexity Revolution: Intelligent Tools for the Globalised World Development Andrei Kirilyuk be used as a basis for the latter, in the form of "complexity revolution" in information systems-driven IT to various aspects of post-industrial civilisation dynamics, including intelligent communication, context

Boyer, Edmond

62

Published: 23 June 2011 Another Revolution Afoot in Egypt  

E-Print Network [OSTI]

1 Published: 23 June 2011 Another Revolution Afoot in Egypt: Top-Notch Science Egypt has launched way to cure fanaticism. Op-Ed by Ahmed H. Zewail Cairo -- Nearly 100 days after the revolution, Egypt say hawa gadid -- a new air. The big question is how to channel this energy to forge a new Egypt

Zewail, Ahmed

63

E-Print Network 3.0 - american revolution Sample Search Results  

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

for: american revolution Page: << < 1 2 3 4 5 > >> 1 J. Franklin Jameson Written when political Summary: . Franklin Jameson's The American Revolution Con- sidered as a Social Move-...

64

niscent of the early stages of the industrial revolution, when inefficient factories pollut-  

E-Print Network [OSTI]

niscent of the early stages of the industrial revolution, when inefficient factories pollut- ed environment.However,agreenerrevolution is also needed -- a revolution that incorpo- rates accumulated

Wolfe, Cecily J.

65

Electrofriction method of manufacturing squirrel cage rotors  

DOE Patents [OSTI]

A method of making a squirrel cage rotor of copper material for use in AC or DC motors, includes forming a core with longitudinal slots, inserting bars of conductive material in the slots, with ends extending out of opposite ends of the core, and joining the end rings to the bars, wherein the conductive material of either the end rings or the bars is copper. Various methods of joining the end rings to the bars are disclosed including electrofriction welding, current pulse welding and brazing, transient liquid phase joining and casting. Pressure is also applied to the end rings to improve contact and reduce areas of small or uneven contact between the bar ends and the end rings. Rotors made with such methods are also disclosed.

Hsu, John S.

2005-04-12T23:59:59.000Z

66

Dynamical Localization in Kicked Quantum Rotors  

E-Print Network [OSTI]

The periodically $\\delta$-kicked quantum linear rotor is known to experience non-classical bounded energy growth due to quantum dynamical localization in angular momentum space. We study the effect of random deviations of the kick period in simulations and experiments. This breaks the energy and angular momentum localization and increases the rotational alignment, which is the analog of the onset of Anderson localization in 1-D chains.

Kamalov, Andrei; Bucksbaum, Philip H

2015-01-01T23:59:59.000Z

67

Double-ended ceramic helical-rotor expander  

DOE Patents [OSTI]

A ceramic helical rotor expander is disclosed using a double-ended or tandem herringbone type rotor arrangement with bearing and seal assemblies remote from the hot gas inlets and especially capable of operating at an inlet temperature of above 1,100 C. The rotors are solid or hollow and bonded to hollow metal shafts, and mounted in a composite or simple prismatic casing. The rotors, casing and shafts are constructed from low expansivity materials. In the preferred embodiment the rotors are constructed of silicon nitride and the shafts constructed of an molybdenum alloy, with the metal shafts being supported in bearings and secured to synchronizing gears. The rotors and casing may be provided with coolant channels therein, and are constructed to eliminate the problem of end leakages at inlet temperature and pressure, and the need for high temperature bearings and seals. 3 figs.

Mohr, P.B.; Myers, W.B.

1995-02-28T23:59:59.000Z

68

Disc rotors with permanent magnets for brushless dc motor  

SciTech Connect (OSTI)

This patent describes a brushless dc permanent magnet motor for driving an autonomous underwater vehicle. It comprises first and second substantially flat, generally cylindrical stators disposed in side by side relation; a first substantially flat, generally cylindrical rotor; a first shaft connected to the first rotor and a second, concentric shaft connected to the second rotor; and means for providing rotation of the first and second shafts in opposite directions.

Hawsey, R.A.; Bailery, J.M.

1992-05-26T23:59:59.000Z

69

Rotor for processing liquids using movable capillary tubes  

DOE Patents [OSTI]

A rotor assembly for processing liquids, especially whole blood samples, is disclosed. The assembly includes apparatus for separating non-liquid components of whole blood samples from liquid components, apparatus for diluting the separated liquid component with a diluent and apparatus for transferring the diluted sample to an external apparatus for analysis. The rotor assembly employs several movable capillary tubes to handle the sample and diluents. A method for using the rotor assembly to process liquids is also described. 5 figs.

Johnson, W.F.; Burtis, C.A.; Walker, W.A.

1987-07-17T23:59:59.000Z

70

Interface structure for hub and mass attachment in flywheel rotors  

DOE Patents [OSTI]

An interface structure for hub and mass attachment in flywheel rotors. The interface structure efficiently transmits high radial compression forces and withstands both large circumferential elongation and local stresses generated by mass-loading and hub attachments. The interface structure is comprised of high-strength fiber, such as glass and carbon, woven into an angle pattern which is about 45.degree. with respect to the rotor axis. The woven fiber is bonded by a ductile matrix material which is compatible with and adheres to the rotor material. This woven fiber is able to elongate in the circumferential direction to match the rotor growth during spinning.

Deteresa, Steven J. (Livermore, CA); Groves, Scott E. (Brentwood, CA)

1998-06-02T23:59:59.000Z

71

Interface structure for hub and mass attachment in flywheel rotors  

DOE Patents [OSTI]

An interface structure is described for hub and mass attachment in flywheel rotors. The interface structure efficiently transmits high radial compression forces and withstands both large circumferential elongation and local stresses generated by mass-loading and hub attachments. The interface structure is comprised of high-strength fiber, such as glass and carbon, woven into an angle pattern which is about 45{degree} with respect to the rotor axis. The woven fiber is bonded by a ductile matrix material which is compatible with and adheres to the rotor material. This woven fiber is able to elongate in the circumferential direction to match the rotor growth during spinning. 2 figs.

Deteresa, S.J.; Groves, S.E.

1998-06-02T23:59:59.000Z

72

Nanosciences : evolution or revolution ? Jean-Louis Pautrat  

E-Print Network [OSTI]

1 Nanosciences : evolution or revolution ? Jean-Louis Pautrat Physicist, former Director of Foundation "Nanosciences aux limites de la nanoélectronique" 23 rue des Martyrs, 38000 Grenoble Abstract

Paris-Sud XI, Université de

73

21H.001 How to Stage a Revolution, Fall 2007  

E-Print Network [OSTI]

21H.001, a HASS-D, CI course, explores fundamental questions about the causes and nature of revolutions. How do people overthrow their rulers? How do they establish new governments? Do radical upheavals require bloodshed, ...

Ravel, Jeffrey S.

74

Implications of the U.S. Shale Revolution  

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

Implications of the U.S. Shale Revolution For US-Canada Energy Summit October 17, 2014 | Chicago, IL By Adam Sieminski, Administrator U.S. Energy Information Administration 0 5 10...

75

Industrial Revolutions: a graduate seminar Seminar in History of Technology  

E-Print Network [OSTI]

recent industrialization in central Europe, Asia, and Latin America, also begun to reassess the concept of industrial revolution itself. This reassessment includes renewed attention to the scientific and technical

Janssen, Michel

76

Turning Waste Heat into Power: Ener-G-Rotors and the Entrepreneurial...  

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

Turning Waste Heat into Power: Ener-G-Rotors and the Entrepreneurial Mentorship Program Turning Waste Heat into Power: Ener-G-Rotors and the Entrepreneurial Mentorship Program...

77

E-Print Network 3.0 - aero-elasticity rotor aerodynamics Sample...  

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

Summary: HVDC 12;Rotor aero-elastics and structural dynamics 12;Aerodynamics for wind turbines Flow over... and components Rotor aero-elastics and structural dynamics Grid...

78

Inorganic membranes: The new industrial revolution  

SciTech Connect (OSTI)

Separation systems are a vital part of most industrial processes. These systems account for a large fraction of the capital equipment used and the operating costs of industrial processes. Inorganic membranes have the potential for providing separation systems that can significantly reduce both the capital equipment and operating costs. These separation processes include waste management and recycle as well as the primary production of raw materials and products. The authors are rapidly learning to understand the effect of physical and chemical properties on the different transport mechanisms that occur in inorganic membranes. Such understanding can be expected to provide the information needed to design, engineer and manufacture inorganic membranes to produce very high separation factors for almost any separation function. To implement such a revolution, the authors need to organize a unique partnership between the national laboratories, and industry. The university can provide research to understand the materials and transport mechanisms that produce various separations, the national laboratories the development of an economical fabrication and manufacturing capability, and industry the practical understanding of the operational problems required to achieve inplementation.

Fain, D.E. [Martin Merietta Energy Systems, Oak Ridge, TN (United States)

1994-12-31T23:59:59.000Z

79

Chaos in a rotor system supported by ball bearings  

E-Print Network [OSTI]

to observing chaos in rotor systems. Further, there has been little work carried out in the area of chaos control, of which only a small portion has been applied to rotor systems. Originally, the goal of the research described in this paper was to control...

Fisher, James Robert, 1979-

2013-02-22T23:59:59.000Z

80

Main Rotor Swashplate Test Stand Design Model and System Overview  

E-Print Network [OSTI]

on the aircraft due to reaction forces generated by rotor blade lift which varies with rotor speed and blade angle of the modified stand: Rotating Components Drivetrain o Variable speed AC Motor o Double cardan input driveshaft, and more closely mimic the operational kinematics of a swashplate which is installed on an aircraft

Almor, Amit

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Effects of increasing tip velocity on wind turbine rotor design.  

SciTech Connect (OSTI)

A reduction in cost of energy from wind is anticipated when maximum allowable tip velocity is allowed to increase. Rotor torque decreases as tip velocity increases and rotor size and power rating are held constant. Reduction in rotor torque yields a lighter weight gearbox, a decrease in the turbine cost, and an increase in the capacity for the turbine to deliver cost competitive electricity. The high speed rotor incurs costs attributable to rotor aero-acoustics and system loads. The increased loads of high speed rotors drive the sizing and cost of other components in the system. Rotor, drivetrain, and tower designs at 80 m/s maximum tip velocity and 100 m/s maximum tip velocity are created to quantify these effects. Component costs, annualized energy production, and cost of energy are computed for each design to quantify the change in overall cost of energy resulting from the increase in turbine tip velocity. High fidelity physics based models rather than cost and scaling models are used to perform the work. Results provide a quantitative assessment of anticipated costs and benefits for high speed rotors. Finally, important lessons regarding full system optimization of wind turbines are documented.

Resor, Brian Ray; Maniaci, David Charles; Berg, Jonathan Charles; Richards, Phillip William

2014-05-01T23:59:59.000Z

82

Disc rotors with permanent magnets for brushless DC motor  

SciTech Connect (OSTI)

A brushless dc permanent magnet motor drives an autonomous underwater vehe. In one embodiment, the motor comprises four substantially flat stators in stacked relationship, with pairs of the stators axially spaced, each of the stators comprising a tape-wound stator coil, and first and second substantially flat rotors disposed between the spaced pairs of stators. Each of the rotors includes an annular array of permanent magnets embedded therein. A first shaft is connected to the first rotor and a second, concentric shaft is connected to the second rotor, and a drive unit causes rotation of the two shafts in opposite directions. The second shaft comprises a hollow tube having a central bore in which the first shaft is disposed. Two different sets of bearings support the first and second shafts. In another embodiment, the motor comprises two ironless stators and pairs of rotors mounted on opposite sides of the stators and driven by counterrotating shafts.

Hawsey, Robert A. (Oak Ridge, TN); Bailey, J. Milton (Knoxville, TN)

1992-01-01T23:59:59.000Z

83

RESULTS AND DISCUSSION -Part I UH60A Rotor in High Speed Forward Flight  

E-Print Network [OSTI]

rotor for a number of hover and forward flight conditions. This rotor is a four-bladed configuration.2: Geometric Twist Distribution for the UH-60A Rotor In the experiment, the blades were trimmed to eliminate the one-per-rev flapping. The rotor blade sectional twist including elastic deformation is available

84

Reference Model 2: %22Rev 0%22 Rotor Design.  

SciTech Connect (OSTI)

The preliminary design for a three-bladed cross-flow rotor for a reference marine hydrokinetic turbine is presented. A rotor performance design code is described, along with modifications to the code to allow prediction of blade support strut drag as well as interference between two counter-rotating rotors. The rotor is designed to operate in a reference site corresponding to a riverine environment. Basic rotor performance and rigid-body loads calculations are performed to size the rotor elements and select the operating speed range. The preliminary design is verified with a simple finite element model that provides estimates of bending stresses during operation. A concept for joining the blades and support struts is developed and analyzed with a separate finite element analysis. Rotor mass, production costs, and annual energy capture are estimated in order to allow calculations of system cost-of-energy. Evaluation Only. Created with Aspose.Pdf.Kit. Copyright 2002-2011 Aspose Pty Ltd Evaluation Only. Created with Aspose.Pdf.Kit. Copyright 2002-2011 Aspose Pty Ltd

Barone, Matthew F.; Berg, Jonathan Charles; Griffith, Daniel

2011-12-01T23:59:59.000Z

85

Energy revolution: policies for a sustainable future  

SciTech Connect (OSTI)

The book examines the policy options for mitigating or removing the entrenched advantages held by fossil fuels and speeding the transition to a more sustainable energy future, one based on improved efficiency and a shift to renewable sources such as solar, wind, and bioenergy. The book: examines today's energy patterns and trends and their consequences; describes the barriers to a more sustainable energy future and how those barriers can be overcome; provides ten case studies of integrated strategies that have been effective in different parts of the world examines international policies and institutions and recommends ways they could be improved; reviews global trends that suggest that the transition to renewables and increased efficiency is underway and is achievable. The core of the book are presentations of Clean Energy scenarios for the US and Brazil. His US scenario has 10 policies. These include: Adopt voluntary agreements to reduce industrial energy use; Provide tax incentives for innovative renewable energy and energy-efficient technologies; Expand federal R & D and deployment programs; Remove barriers to combined heat and power systems; and Strengthen emissions standards on coal-fired plants. Geller calculates that the impact of his ten policies would be a $600 billion cost and a $1200 billion savings, for a net savings of $600 billion compared to a baseline scenario of continued promotion of fossil fuels.

Howard Geller [Southwest Energy Efficiency Project, Boulder, CO (United States)

2002-07-01T23:59:59.000Z

86

Control coil arrangement for a rotating machine rotor  

DOE Patents [OSTI]

A rotating machine (e.g., a turbine, motor or generator) is provided wherein a fixed solenoid or other coil configuration is disposed adjacent to one or both ends of the active portion of the machine rotor for producing an axially directed flux in the active portion so as to provide planar axial control at single or multiple locations for rotor balance, levitation, centering, torque and thrust action. Permanent magnets can be used to produce an axial bias magnetic field. The rotor can include magnetic disks disposed in opposed, facing relation to the coil configuration.

Shah, Manoj R. (Latham, NY); Lewandowsk, Chad R. (Amsterdam, NY)

2001-07-31T23:59:59.000Z

87

The 5-megawatt power plant with 126 metre rotor diameter  

E-Print Network [OSTI]

The 5-megawatt power plant with 126 metre rotor diameter #12;Design data Rated power 5,000kW Cut-in speed 3.5m/s Rated wind speed 13.0m/s Cut-out speed 25.0m/s onshore 30.0m/s offshore Wind zone up to DIBt 3 Type class up to IEC Ib / GL offshore type class I Rotor Diameter 126.0m Rotor area 12,469m2

Firestone, Jeremy

88

Synchronization and Collective Dynamics in a Carpet of Microfluidic Rotors  

E-Print Network [OSTI]

We study synchronization of an array of rotors on a substrate that are coupled by hydrodynamic interaction. The rotors that are modeled by an effective rigid body, are driven by an internal torque and exerts an active force on the surrounding fluid. The long-ranged nature of the hydrodynamic interaction between the rotors causes a rich pattern of dynamical behaviors including phase ordering and turbulent spiral waves. The model provides a novel example of coupled oscillators with long-range interaction. Our results suggest strategies for designing controllable microfluidic mixers using the emergent behavior of hydrodynamically coupled active components.

Nariya Uchida; Ramin Golestanian

2010-04-28T23:59:59.000Z

89

Tip cap for a turbine rotor blade  

DOE Patents [OSTI]

A turbine rotor blade with a spar and shell construction, and a tip cap that includes a row of lugs extending from a bottom side that form dovetail grooves that engage with similar shaped lugs and grooves on a tip end of the spar to secure the tip cap to the spar against radial displacement. The lug on the trailing edge end of the tip cap is aligned perpendicular to a chordwise line of the blade in the trailing edge region in order to minimize stress due to the lugs wanting to bend under high centrifugal loads. A two piece tip cap with lugs at different angles will reduce the bending stress even more.

Kimmel, Keith D

2014-03-25T23:59:59.000Z

90

Lean implementation across value stream in main rotor blade area  

E-Print Network [OSTI]

The primary goal for this project was to help expand the existing capability of Sikorsky's main rotor blade business from raw material (titanium) through final assembly. The project helped to facilitate the ongoing lean ...

Phoenix, Casey J. (Casey John)

2007-01-01T23:59:59.000Z

91

Methods and apparatus for rotor blade ice detection  

DOE Patents [OSTI]

A method for detecting ice on a wind turbine having a rotor and one or more rotor blades each having blade roots includes monitoring meteorological conditions relating to icing conditions and monitoring one or more physical characteristics of the wind turbine in operation that vary in accordance with at least one of the mass of the one or more rotor blades or a mass imbalance between the rotor blades. The method also includes using the one or more monitored physical characteristics to determine whether a blade mass anomaly exists, determining whether the monitored meteorological conditions are consistent with blade icing; and signaling an icing-related blade mass anomaly when a blade mass anomaly is determined to exist and the monitored meteorological conditions are determined to be consistent with icing.

LeMieux, David Lawrence

2006-08-08T23:59:59.000Z

92

Methods and apparatus for rotor load control in wind turbines  

DOE Patents [OSTI]

A wind turbine having a rotor, at least one rotor blade, and a plurality of generators, of which a first generator is configured to provide power to an electric grid and a second generator is configured to provide power to the wind turbine during times of grid loss. The wind turbine is configured to utilize power provided by the second generator to reduce loads on the wind turbine during times of grid loss.

Moroz, Emilian Mieczyslaw

2006-08-22T23:59:59.000Z

93

IT Revolutions in the Industry: From the Command Economy to the eNetworked Industrial Ecosystem  

E-Print Network [OSTI]

IT ­ Revolutions in the Industry: From the Command Economy to the eNetworked Industrial Ecosystem of the traditional hierarchy ­ as backbone of last Century's Industrial Revolution - towards the eNetworked Industrial Ecosystem ­ as backbone for this Century's on-going IT-Revolution. Socio-cultural and economic

Ulieru, Mihaela

94

Industrial Revolutions and Consumption: A Common Model to the Various Periods of Industrialization  

E-Print Network [OSTI]

Industrial Revolutions and Consumption: A Common Model to the Various Periods of Industrialization and establish a plausible link between consumption structure evolutions and industrial revolutions. In particular, we show that an industrial revolution starts with a "smithian growth process", which is demand

Boyer, Edmond

95

Structural testing of the North Wind 250 composite rotor joint  

SciTech Connect (OSTI)

The North Wind 250 wind turbine is under development at Northern Power Systems (NPS) in Moretown, VT. The turbine uses a unique, flow-through, teetered-rotor design. This design eliminates structural discontinuities at the blade/hub interface by fabricating the rotor as one continuous structural element. To accomplish this, the two blade spars are joined at the center of the rotor using a proprietary bonding technique. Fatigue tests were conducted on the full-scale rotor joint at the National Renewable Energy Laboratory (NREL). Subsequent tests are now underway to test the full-scale rotor and hub assembly to verify the design assumptions. The test articles were mounted in dedicated test fixtures. For the joint test, a constant moment was generated across the joint and parent material. Hydraulic actuators applied sinusoidal loading to the test article at levels equivalent to 90% of the extreme wind load for over one million cycles. When the loading was increased to 112% of the extreme wind load, the joint failed by buckling. Strain levels were monitored at 14 locations inside and outside of the blade joint during the test. The tests were used to qualify this critical element of the rotor for field testing and to provide information needed to improve the structural design of the joint.

Musial, W; Link, H [National Renewable Energy Lab., Golden, CO (United States); Coleman, C [Northern Power Systems, Moretown, VT (United States)

1994-05-01T23:59:59.000Z

96

Database Architecture (R)evolution: New Hardware vs. New Software  

E-Print Network [OSTI]

Database Architecture (R)evolution: New Hardware vs. New Software Stavros Harizopoulos (Panel and, in some cases, reinvent the traditional DBMS architecture. In the space of data warehousingDB: An Architectural Hybrid of MapReduce and DBMS Technologies for Analytical Workloads," in Proc. PVLDB'09, 2009. [3

97

Adult Football Helmet Detailed Ratings Riddell Revolution Speed  

E-Print Network [OSTI]

Adult Football Helmet Detailed Ratings May 2011 Riddell Revolution Speed Helmet ID SPEED1 SPEED2: A total of 10 adult football helmet models were evaluated using the STAR evaluation system for May 2011.397 0.350 0.322 Overall STAR 0.356 Very Good: Adult Football Helmet Detailed Ratings May 2011 #12

Lu, Chang

98

Published: 14 October 2013 The Revolution Egypt Needs  

E-Print Network [OSTI]

1 Published: 14 October 2013 The Revolution Egypt Needs Op-Ed by Ahmed H. Zewail Pasadena, California -- When I was a boy in Desuq, Egypt, a city on the Rosetta branch of the Nile, about 50 miles east was in the fabric of our culture and religion. I left Egypt in 1969 for graduate school at the University

Zewail, Ahmed

99

Rigid-rotor, field-reversed configuration  

SciTech Connect (OSTI)

The radial profiles, n(r), B{sub z}(r), and E{sub r}(r), for a Flux-Coil (“inductively driven”), Field-Reversed Configuration (FC-FRC) are measured and compared to the predictions of the Rigid-Rotor Model (RRM), which is an analytic, one-dimensional, time-independent, equilibrium description for the FRC. Injectors mounted on both ends of the confinement vessel provide a pre-fill plasma. Coaxial coils mounted outside the vacuum boundaries of the annular-confinement vessel accelerate the plasma and produce the FRC. The density profile is measured by laser interferometry, the magnetic-field profile using an in-situ probe array, and the electric-field profile using an in-situ, floating-probe array. Free parameters for each profile are measured, which also allow other intrinsic-plasma parameters to be determined, using computer-fit algorithms: null radius, radial thickness, plasma temperature, rotation frequencies, the latter of which are independently verified by spectroscopy. All radial profiles agree with the RRM predictions, for the experimental configuration, parameter regime, and specified-time interval studied here.

Conti, F., E-mail: conti@df.unipi.it; Giammanco, F. [Physics Department “E. Fermi,” University of Pisa, Largo B. Pontecorvo 3, 56127 Pisa (Italy) [Physics Department “E. Fermi,” University of Pisa, Largo B. Pontecorvo 3, 56127 Pisa (Italy); Plasma Diagnostics and Technologies Ltd., Via Giuntini 63, 56023 Navacchio (PI) (Italy); Wessel, F. J.; Binderbauer, M. W.; Bolte, N.; Morehouse, M.; Qerushi, A.; Rahman, H. U.; Roche, T.; Slepchenkov, M. [Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688 (United States)] [Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688 (United States)

2014-02-15T23:59:59.000Z

100

In the mIdst of an energy revolutIon, Purdue's world-class researchers lead the charge. we collaborate across a broad range of dIscIPlInes --to develoP  

E-Print Network [OSTI]

In the mIdst of an energy revolutIon, Purdue's world-class researchers lead the charge. we rechargIng IndIana's renewable energy revolutIon #12;enerGY solutions solar The U.S. Department of Energy

Holland, Jeffrey

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Using a collision model to design safer wind turbine rotors for birds  

SciTech Connect (OSTI)

A mathematical model for collisions between birds and propeller-type turbine rotors identifies the variables that can be manipulated to reduce the probability that birds will collide with the rotor. This study defines a safety index--the clearance power density--that allows rotors of different sizes and designs to be compared in terms of the amount of wind energy converted to electrical energy per bird collision. The collision model accounts for variations in wind speed during the year and shows that for model rotors with simple, one-dimensional blades, the safety index increases in proportion to rotor diameter, and variable speed rotors have higher safety indexes than constant speed rotors. The safety index can also be increased by enlarging the region near the center of the rotor hub where the blades move slowly enough for birds to avoid them. Painting the blades to make them more visible might have this effect. Model rotors with practical designs can have safety indexes an order of magnitude higher than those for model rotors typical of the constant speeds rotors in common use today. This finding suggests that redesigned rotors could have collision rates with birds perhaps an order of magnitude lower than today`s rotors, with no reduction in the production of wind power. The empirical data that exist for collisions between raptors, such as hawks and eagles, and rotors are consistent with the model: the numbers of raptor carcasses found beneath large variable speed rotors, relative to the numbers found under small constant speed rotors, are in the proportions predicted by the collision model rather than in proportion to the areas swept by the rotor blades. However, uncontrolled variables associated with these data prevent a stronger claim of support for the model.

Tucker, V.A. [Duke Univ., Durham, NC (United States). Dept. of Zoology

1996-11-01T23:59:59.000Z

102

Intelligent Microsystems: Keys to the Next Silicon Revolution  

SciTech Connect (OSTI)

Paul McWhorter, Deputy Director for of the Microsystems Center at Sandia National Laboratories, discusses the potential of surface micromachining. A vision of the possibilities of intelligent Microsystems for the future is presented along with descriptions of several possible applications. Applications that are just around the corner and some that maybe quite a ways down the road but have a clear development path to their realization. Microsystems will drive the next silicon revolution.

MCWHORTER,PAUL J.

1999-10-20T23:59:59.000Z

103

Revolution vs. Devolution in Kansas: Teaching in a Conservative Climate  

E-Print Network [OSTI]

academic fredom, I shal argue, as I examine and recommend a strategy for achieving this revolution in the devolving situation that is Kansas. I. Religious fundamentalism and academic fredom in Kansas The political problems of teaching in Kansas can... feminists and biologists: evolution, sexuality education, abortion, stem cel research, and academic fredom itself. Each of these isues and the related controversies in Kansas ilustrate how fundamentalists would restrict the world view of students...

Cudd, Ann E.

2007-01-01T23:59:59.000Z

104

Hi-Q Rotor - Low Wind Speed Technology  

SciTech Connect (OSTI)

The project objective was to optimize the performance of the Hi-Q Rotor. Early research funded by the California Energy Commission indicated the design might be advantageous over state-of-the-art turbines for collecting wind energy in low wind conditions. The Hi-Q Rotor is a new kind of rotor targeted for harvesting wind in Class 2, 3, and 4 sites, and has application in areas that are closer to cities, or 'load centers.' An advantage of the Hi-Q Rotor is that the rotor has non-conventional blade tips, producing less turbulence, and is quieter than standard wind turbine blades which is critical to the low-wind populated urban sites. Unlike state-of-the-art propeller type blades, the Hi-Q Rotor has six blades connected by end caps. In this phase of the research funded by DOE's Inventions and Innovation Program, the goal was to improve the current design by building a series of theoretical and numeric models, and composite prototypes to determine a best of class device. Development of the rotor was performed by aeronautical engineering and design firm, DARcorporation. From this investigation, an optimized design was determined and an 8-foot diameter, full-scale rotor was built and mounted using a Bergey LX-1 generator and furling system which were adapted to support the rotor. The Hi-Q Rotor was then tested side-by-side against the state-of-the-art Bergey XL-1 at the Alternative Energy Institute's Wind Test Center at West Texas State University for six weeks, and real time measurements of power generated were collected and compared. Early wind tunnel testing showed that the cut-in-speed of the Hi-Q rotor is much lower than a conventional tested HAWT enabling the Hi-Q Wind Turbine to begin collecting energy before a conventional HAWT has started spinning. Also, torque at low wind speeds for the Hi-Q Wind Turbine is higher than the tested conventional HAWT and enabled the wind turbine to generate power at lower wind speeds. Based on the data collected, the results of our first full-scale prototype wind turbine proved that higher energy can be captured at lower wind speeds with the new Hi-Q Rotor. The Hi-Q Rotor is almost 15% more productive than the Bergey from 6 m/s to 8 m/s, making it ideal in Class 3, 4, and 5 wind sites and has application in the critical and heretofore untapped areas that are closer to cities, 'load centers,' and may even be used directly in urban areas. The additional advantage of the Hi-Q Rotor's non-conventional blade tips, which eliminates most air turbulence, is noise reduction which makes it doubly ideal for populated urban areas. Hi-Q Products recommends one final stage of development to take the Hi-Q Rotor through Technology Readiness Levels 8-9. During this stage of development, the rotor will be redesigned to further increase efficiency, match the rotor to a more suitable generator, and lower the cost of manufacturing by redesigning the structure to allow for production in larger quantities at lower cost. Before taking the rotor to market and commercialization, it is necessary to further optimize the performance by finding a better generator and autofurling system, ones more suitable for lower wind speeds and rpms should be used in all future testing. The potential impact of this fully developed technology will be the expansion and proliferation of energy renewal into the heretofore untapped Class 2, 3, 4, and 5 Wind Sites, or the large underutilized sites where the wind speed is broken by physical features such as mountains, buildings, and trees. Market estimates by 2011, if low wind speed technology can be developed are well above: 13 million homes, 675,000 commercial buildings, 250,000 public facilities. Estimated commercial exploitation of the Hi-Q Rotor show potential increase in U.S. energy gained through the clean, renewable wind energy found in low and very low wind speed sites. This new energy source would greatly impact greenhouse emissions as well as the public sector's growing energy demands.

Todd E. Mills; Judy Tatum

2010-01-11T23:59:59.000Z

105

Method and apparatus for assembling permanent magnet rotors  

DOE Patents [OSTI]

A permanent magnet assembly for assembly in large permanent magnet motors and generators includes a two-piece carrier that can be slid into a slot in the rotor and then secured in place using a set screw. The invention also provides an auxiliary carrier device with guide rails that line up with the teeth of the rotor, so that a permanent magnet assembly can be pushed first into a slot, and then down the slot to its proper location. An auxiliary tool is provided to move the permanent magnet assembly into position in the slot before it is secured in place. Methods of assembling and disassembling the magnet assemblies in the rotor are also disclosed. 2 figs.

Hsu, J.S.; Adams, D.J.

1999-06-22T23:59:59.000Z

106

Operating Modes of a Teeter-Rotor Wind Turbine  

SciTech Connect (OSTI)

We examine the operating modes of a two-bladed teetered wind turbine. Because of the gyroscopic asymmetry of its rotor, this turbine's dynamics can be quite distinct from those of a turbine with three or more blades. This asymmetry leads to system equations with periodic coefficients that are solved using the Floquet approach to extract the correct modal parameters. The system equations are derived using a simple analytical model with four degrees of freedom: cacelle yaw, rotor teeter, and flapping associated with each blade. Results confirm that the turbine modes become more dominated by the centrifugal and gyroscopic effects as the rotor speed increases. They gyroscopic effect may also cause dynamic instability. Under certain design conditions, yaw and teeter modal frequencies may coalesce.

Bir, G. S. (National Renewable Energy Laboratory); Stol, K. (University of Colorado at Boulder)

1999-02-25T23:59:59.000Z

107

BASIC CONTROL FOR FOUR ROTOR AUTONOMOUS AERIAL AGENT JONATHAN MCLEAN, CONNECTICUT COLLEGE, USA,  

E-Print Network [OSTI]

more difficult to control, requiring minute adjustments to individual rotor blades, as well as tailBASIC CONTROL FOR FOUR ROTOR AUTONOMOUS AERIAL AGENT JONATHAN MCLEAN, CONNECTICUT COLLEGE, USA platform is required. Our four-rotor platform provides researchers with a inexpensive, fully scalable test

Parker, Gary B.

108

Computational Modeling of Rotor Blade Performance Degradation Due to Ice Accretion  

E-Print Network [OSTI]

PENNSTATE _ Computational Modeling of Rotor Blade Performance Degradation Due to Ice Accretion, 2013 9:00 a.m. 301 Steidle Building Ice accretion on helicopter rotor blades can cause significant. If unabated, rotor ice can accumulate to the point where the vehicle can no longer maintain flight

Maroncelli, Mark

109

FAULT DETECTION AND STATE EVALUATION OF ROTOR BLADES Yuri Petryna, Andreas Knzel, Matthias Kannenberg  

E-Print Network [OSTI]

FAULT DETECTION AND STATE EVALUATION OF ROTOR BLADES Yuri Petryna, Andreas KĂĽnzel, Matthias an approach for cost-effective, serial integrity tests of rotor blades. At that, manufacturing faults shall be automatically detected, localized and assessed with respect to their impact on the integrity of rotor blades

Boyer, Edmond

110

Reduction of multi-stage disk models: Application to an industrial rotor  

E-Print Network [OSTI]

of the rotor into sectors. The bladed disks are coupled by intermediate rings which remove the problem that of a small portion, typically a bladed sector. This configuration no longer holds in real rotors due with multi-stage rotors. However, as underlined by Bladh et al.6 , the critical point is the choice

Boyer, Edmond

111

RESULTS AND DISCUSSION Part II AH-1G ROTOR IN LOW SPEED DESCENT FLIGHT  

E-Print Network [OSTI]

, results are presented for a two-bladed AH-1G rotor in a low-speed descent condition. In low speed forward and Acoustics Test (TAAT) was conducted on an AH-1G Cobra. It used highly instrumented rotor blades direction. The inner Navier-Stokes zone includes about 39% of the total grid points. The rotor has

112

DETECTION OF IMPULSE-LIKE AIRBORNE SOUND FOR DAMAGE IDENTIFICATION IN ROTOR BLADES OF WIND TURBINES  

E-Print Network [OSTI]

DETECTION OF IMPULSE-LIKE AIRBORNE SOUND FOR DAMAGE IDENTIFICATION IN ROTOR BLADES OF WIND TURBINES burdens of wind turbines. To detect damage of rotor blades, several research projects focus on an acoustic, rotor blade, wind turbine INTRODUCTION There are several publications of non destructive damage

Boyer, Edmond

113

American Institute of Aeronautics Astronautics DEVELOPMENT OF UNSTEADINESS IN A ROTOR WAKE  

E-Print Network [OSTI]

- speed forward flight (or cross-wind), where the wake is swept behind the rotor, the effect of ground1 American Institute of Aeronautics Astronautics DEVELOPMENT OF UNSTEADINESS IN A ROTOR WAKE Georgia Institute of Technology Atlanta, GA 30332-0150 ABSTRACT The flow field around the rotor in ground

114

Study of the non-linear dynamic response of a rotor system with faults and uncertainties  

E-Print Network [OSTI]

of the non-linear re- sponse in rotor systems with multi-faults (such as unbalance, asymmetric shaft, bow and Ferraris in fixed frame [10]. · The bow is an initial deformation of the rotor which can be caused) or all parts of the rotor (extended bow). Darpe [12] proposes to investigate the influence of a bow

Paris-Sud XI, Université de

115

LOSS OF ROTOR ISOTROPY AS A BLADE DAMAGE INDICATOR FOR WIND TURBINE STRUCTURE HEALTH MONITORING SYSTEMS  

E-Print Network [OSTI]

LOSS OF ROTOR ISOTROPY AS A BLADE DAMAGE INDICATOR FOR WIND TURBINE STRUCTURE HEALTH MONITORING to simulated vibrations of a rotating rotor. KEYWORDS : wind turbine blade, rotor anisotropy, Floquet analysis, OMA INTRODUCTION Blades of modern wind turbines are complex high-tech structures, and their cost

Paris-Sud XI, Université de

116

Framing Iran: The Islamic Revolution and the Green Movement as Told Through Time Magazine.  

E-Print Network [OSTI]

?? FRAMING IRAN: THE ISLAMIC REVOLUTION AND THE GREEN MOVEMENT AS TOLD THROUGH TIME MAGAZINE by Nadia Maiwandi This framing analysis was conducted to study… (more)

Maiwandi, Nadia

2013-01-01T23:59:59.000Z

117

TLA-55 Rotor Used in Beckman Coulter OptimaTM  

E-Print Network [OSTI]

Ultracentrifuges Published by the Centrifuge Instrument Systems Development Center of Beckman Coulter, Inc., Palo should be read and understood before operation or maintenance of this equipment is attempted. When you, and tested for safety and reliability as part of a Beckman Coulter ultracentrifuge/rotor system. Its safety

Pawlowski, Wojtek

118

Offshore Series Wind Turbine Variable Hub heights & rotor diameters  

E-Print Network [OSTI]

3.6MW Offshore Series Wind Turbine GE Energy #12;Feature Variable Hub heights & rotor diameters-savings feature, considering the rigors of offshore power generation. The 3.6 MW offshore wind turbine also, for both on and offshore use. Special features include... As the world's first commercially available wind

Firestone, Jeremy

119

Single Molecular Rotor at the Nanoscale Christian Joachim1  

E-Print Network [OSTI]

�schlikon, Switzerland E-mail: gim@zurich.ibm.com The design of a monomolecular engine such as a rotating motor ®rst requires the preparation of a semi-classical rotating motion of the rotor part of the engine. We show versions of machines in our daily life, using the same working principles such as, for instance, a steam

Gimzewski, James

120

Phase modulated rotor angle encoder for switched reluctance motor drive  

E-Print Network [OSTI]

sensor. In an inexpensive systein, the rotor position sensor comprises of a magnetized ring along with Hall etfect sensors or opto-interrupters with slotted clisk. An optical sensor has a, light emitting diode which acts as a light transmitter, enid a...

Mahajan, Shailendra

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

DEVELOPMENT OF TIP CLEARANCE FLOW DOWNSTREAM OF A ROTOR BLADE WITH COOLANT INJECTION FROM A TIP TRENCH  

E-Print Network [OSTI]

DEVELOPMENT OF TIP CLEARANCE FLOW DOWNSTREAM OF A ROTOR BLADE WITH COOLANT INJECTION FROM A TIP Rotor blade height Um Mean wheel speed, i.e. midspan rotor speed Absolute flow angle measured from the nozzle guide vane and the rotor blade need to be cooled adequately in order to maintain the 1 #12

Camci, Cengiz

122

Performance of twist-coupled blades on variable speed rotors  

SciTech Connect (OSTI)

The load mitigation and energy capture characteristics of twist-coupled HAWT blades that are mounted on a variable speed rotor are investigated in this paper. These blades are designed to twist toward feather as they bend with pretwist set to achieve a desirable twist distribution at rated power. For this investigation, the ADAMS-WT software has been modified to include blade models with bending-twist coupling. Using twist-coupled and uncoupled models, the ADAMS software is exercised for steady wind environments to generate C{sub p} curves at a number of operating speeds to compare the efficiencies of the two models. The ADAMS software is also used to generate the response of a twist-coupled variable speed rotor to a spectrum of stochastic wind time series. This spectrum contains time series with two mean wind speeds at two turbulence levels. Power control is achieved by imposing a reactive torque on the low speed shaft proportional to the RPM squared with the coefficient specified so that the rotor operates at peak efficiency in the linear aerodynamic range, and by limiting the maximum RPM to take advantage of the stall controlled nature of the rotor. Fatigue calculations are done for the generated load histories using a range of material exponents that represent materials from welded steel to aluminum to composites, and results are compared with the damage computed for the rotor without twist-coupling. Results indicate that significant reductions in damage are achieved across the spectrum of applied wind loading without any degradation in power production.

Lobitz, D.W.; Veers, P.S.; Laino, D.J.

1999-12-07T23:59:59.000Z

123

Active Flow Control on Bidirectional Rotors for Tidal MHK Applications  

SciTech Connect (OSTI)

A marine and hydrokinetic (MHK) tidal turbine extracts energy from tidal currents, providing clean, sustainable electricity generation. In general, all MHK conversion technologies are confronted with significant operational hurdles, resulting in both increased capital and operations and maintenance (O&M) costs. To counter these high costs while maintaining reliability, MHK turbine designs can be simplified. Prior study found that a tidal turbine could be cost-effectively simplified by removing blade pitch and rotor/nacelle yaw. Its rotor would run in one direction during ebb and then reverse direction when the current switched to flood. We dubbed such a turbine a bidirectional rotor tidal turbine (BRTT). The bidirectional hydrofoils of a BRTT are less efficient than conventional hydrofoils and capture less energy, but the elimination of the pitch and yaw systems were estimated to reduce levelized cost of energy by 7.8%-9.6%. In this study, we investigated two mechanisms for recapturing some of the performance shortfall of the BRTT. First, we developed a novel set of hydrofoils, designated the yy series, for BRTT application. Second, we investigated the use of active flow control via microtabs. Microtabs are small deployable/retractable tabs, typically located near the leading or trailing edge of an air/hydrofoil with height on the order of the boundary layer thickness (1% - 2% of chord). They deploy approximately perpendicularly to the foil surface and, like gurney flaps and plain flaps, globally affect the aerodynamics of the airfoil. By strategically placing microtabs and selectively deploying them based on the direction of the inflow, performance of a BRTT rotor can be improved while retaining bidirectional operation. The yy foils were computationally designed and analyzed. They exhibited better performance than the baseline bidirectional foil, the ellipse. For example, the yyb07cn-180 had 14.7% higher (l/d)max than an ellipse of equal thickness. The yyb07cn family also had higher c{sub p,min} than equivalently thick ellipses, indicating less susceptibility to cavitation. Microtabs applied on yy foils demonstrated improved energy capture. A series of variable speed and constant speed rotors were developed with the yyb07cn family of hydrofoils. The constant speed yyb07cn rotor (yy-B02-Rcs,opt) captured 0.45% more energy than the equivalent rotor with ellipses (e-B02-Rcs,opt). With microtabs deployed (yy?t-B02-Rcs,opt), the energy capture increase over the rotor with ellipses was 1.05%. Note, however, that microtabs must be applied judiciously to bidirectional foils. On the 18% thick ellipse, performance decreased with the addition of microtabs. Details of hydrofoil performance, microtab sizing and positioning, rotor configurations, and revenue impacts are presented herein.

Shiu, Henry [Research Engineer; van Dam, Cornelis P. [Professor

2013-08-22T23:59:59.000Z

124

Academic Journals The Open Access Revolution Choosing Where to Publish Academic Journal Publishing  

E-Print Network [OSTI]

's the articles that really count! Academic Journal Publishing John Stockie ­ SFU 7/35 #12;Academic JournalsAcademic Journals The Open Access Revolution Choosing Where to Publish Academic Journal Publishing and the Open Access Revolution John Stockie CFD Group Presentation June 10, 2013 Academic Journal Publishing

Stockie, John

125

Consumption, Social Capital, and the 'Industrious Revolution' in Early Modern Germany  

E-Print Network [OSTI]

Consumption, Social Capital, and the “Industrious Revolution” in Early Modern Germany SHEILAGH OGILVIE Faculty of Economics, University of Cambridge Acknowledgements: I am grateful to Marco Belfanti, André... ; labour; discrimination; gender; Germany 1 Expanding market consumption is widely ascribed a key role in European economic growth before industrialization. A “Consumer Revolution” between 1650 and 1800 is thought to have seen the middle classes...

Ogilvie, Sheilagh

126

The Communications Revolution and Health Inequalities in the 21st Century  

E-Print Network [OSTI]

The Communications Revolution and Health Inequalities in the 21st Century: Promises and Pitfalls and industrial sensors, video, email and social network communications. For example, if you buy a used car, your://www.pewinternet.org/~/media//Files/Reports/2013/PIP_TeensandTechnology2013.pdf #12;What do we mean by communications revolution? Two dimensions

Illinois at Chicago, University of

127

Joint Stiffness Identification of Six-revolute Industrial Serial Robots Claire Dumas  

E-Print Network [OSTI]

Joint Stiffness Identification of Six-revolute Industrial Serial Robots Claire Dumas , St the stiffness of industrial robots from robot manufacturers. As a consequence, this paper introduces a robust and fast procedure that can be used to identify the joint stiffness values of any six-revolute serial robot

Paris-Sud XI, Université de

128

Experience you can trust. The U.S. Smart Grid Revolution  

E-Print Network [OSTI]

Experience you can trust. The U.S. Smart Grid Revolution KEMA's Perspectives for Job Creation of Contents The U.S. Smart Grid Revolution December 23, 2008 KEMA's Perspectives for Job Creation i 1.S...............................................................................................2-1 2.2 Smart Grid Activity in the U

129

Sweep-twist adaptive rotor blade : final project report.  

SciTech Connect (OSTI)

Knight & Carver was contracted by Sandia National Laboratories to develop a Sweep Twist Adaptive Rotor (STAR) blade that reduced operating loads, thereby allowing a larger, more productive rotor. The blade design used outer blade sweep to create twist coupling without angled fiber. Knight & Carver successfully designed, fabricated, tested and evaluated STAR prototype blades. Through laboratory and field tests, Knight & Carver showed the STAR blade met the engineering design criteria and economic goals for the program. A STAR prototype was successfully tested in Tehachapi during 2008 and a large data set was collected to support engineering and commercial development of the technology. This report documents the methodology used to develop the STAR blade design and reviews the approach used for laboratory and field testing. The effort demonstrated that STAR technology can provide significantly greater energy capture without higher operating loads on the turbine.

Ashwill, Thomas D.

2010-02-01T23:59:59.000Z

130

Adaptor assembly for coupling turbine blades to rotor disks  

DOE Patents [OSTI]

An adaptor assembly for coupling a blade root of a turbine blade to a root slot of a rotor disk is described. The adaptor assembly includes a turbine blade having a blade root and an adaptor body having an adaptor root. The adaptor body defines a slot having an open end configured to receive the blade root of the turbine blade such that the adaptor root of the adaptor body and the blade root of the turbine blade are adjacent to one another when the blade root of the turbine blade is positioned within the slot. Both the adaptor root of the adaptor body and the blade root of the turbine blade are configured to be received within the root slot of the rotor disk.

Garcia-Crespo, Andres Jose; Delvaux, John McConnell

2014-09-23T23:59:59.000Z

131

Analysis of a teetered, variable-speed rotor: final report  

SciTech Connect (OSTI)

A computer model of a horizontal axis wind turbine (HOOT) with four structural degrees of freedom has been derived and verified. The four degrees of freedom include flapwise motion of the blades, teeter motion, and variable rotor speed. Options for the variable rotor speed include synchronous, induction, and constant-tip speed generator models with either start, stop, or normal operations. Verification is made by comparison with analytical solutions and mean and cyclic ESI-80 data. The Veers full-field turbulence model is used as a wind input for a synchronous and induction generator test case during normal operation. As a result of the comparison, it is concluded that the computer model can be used to predict accurately mean and cyclic loads with a turbulent wind input. 47 refs., 19 figs.

Weber, T.L.; Wilson, R.E.; Walker, S.N. (Oregon State Univ., Corvallis, OR (USA). Dept. of Mechanical Engineering) [Oregon State Univ., Corvallis, OR (USA). Dept. of Mechanical Engineering

1991-06-01T23:59:59.000Z

132

Preform spar cap for a wind turbine rotor blade  

DOE Patents [OSTI]

A spar cap for a wind turbine rotor blade. The spar cap may include multiple preform components. The multiple preform components may be planar sheets having a swept shape with a first end and a second end. The multiple preform components may be joined by mating the first end of a first preform component to the second end of a next preform component, forming the spar cap.

Livingston, Jamie T. (Simpsonville, SC); Driver, Howard D. (Greer, SC); van Breugel, Sjef (Enschede, NL); Jenkins, Thomas B. (Cantonment, FL); Bakhuis, Jan Willem (Nijverdal, NL); Billen, Andrew J. (Daarlerveen, NL); Riahi, Amir (Pensacola, FL)

2011-07-12T23:59:59.000Z

133

Embedded Real-Time Systems Electrical Model Quad Rotor UAV  

E-Print Network [OSTI]

Sys (2013-2014) #12;10 System SW view joystick QR PC link PC lift roll pitch yaw sensorsES joystickIn4073 Embedded Real-Time Systems Electrical Model Quad Rotor UAV #12;2 TE0300 FPGA System HW view), pitch rate (M), and yaw rate (N) (see qrsim for example!) x z y engine 4 engine 3 engine 2 engine 1 In

Langendoen, Koen

134

Oxygen-Diffused Titanium as a Candidate Brake Rotor Material  

SciTech Connect (OSTI)

Titanium alloys are one of several candidate materials for the next generation of truck disk brake rotors. Despite their advantages of lightweight relative to cast iron and good strength and corrosion resistance, titanium alloys are unlikely to be satisfactory brake rotor materials unless their friction and wear behavior can be significantly improved. In this study, a surface engineering process oxygen diffusion was applied to titanium rotors and has shown very encouraging results. The oxygen diffused Ti-6Al-4V (OD-Ti) was tested on a sub-scale brake tester against a flat block of commercial brake lining material and benchmarked against several other Ti-based materials, including untreated Ti-6Al-4V, ceramic particle-reinforced Ti composites (MMCs), and a thermal-spray-coated Ti alloy. With respect to friction, the OD-Ti outperformed all other candidate materials under the imposed test conditions with the friction coefficient remaining within a desirable range of 0.35-0.50, even under the harshest conditions when the disk surface temperature reached nearly 600 ?C. In addition, the OD-Ti showed significantly improved wear-resistance over the non-treated one and was even better than the Ti-based composite materials.

Qu, Jun [ORNL; Blau, Peter Julian [ORNL; Jolly, Brian C [ORNL

2009-01-01T23:59:59.000Z

135

Blade platform seal for ceramic/metal rotor assembly  

DOE Patents [OSTI]

A combination ceramic and metal turbine rotor for use in high temperature gas turbine engines includes a metal rotor disc having a rim with a plurality of circumferentially spaced blade root retention slots therein to receive a plurality of ceramic blades, each including side platform segments thereon and a dovetail configured root slidably received in one of the slots. Adjacent ones of the platform segments including edge portions thereon closely spaced when the blades are assembled to form expansion gaps in an annular flow surface for gas passage through the blades and wherein the assembly further includes a plurality of unitary seal members on the rotor connected to its rim and each including a plurality of spaced, axially extending, flexible fingers that underlie and conform to the edge portions of the platform segments and which are operative at turbine operating temperatures and speeds to distribute loading on the platform segments as the fingers are seated against the underside of the blade platforms to seal the gaps without undesirably stressing thin web ceramic sections of the platform.

Wertz, John L. (Indianapolis, IN)

1982-01-01T23:59:59.000Z

136

Preliminary structural design conceptualization for composite rotor for verdant power water current turbine  

SciTech Connect (OSTI)

Sandia National Laboratories (SNL) and Verdant Power Inc. (VPI) have partnered under a Cooperative Research and Development Agreement (CRADA) to develop a new kinetic hydropower rotor. The rotor features an improved hydrodynamic and structural design which features state-of-the-art technology developed for the wind industry. The new rotor will have higher energy capture, increased system reliability, and reduction of overall cost of energy. This project was divided into six tasks: (1) Composite Rotor Project Planning and Design Specification; (2) Baseline Fatigue Testing and Failure analysis; (3) Develop Blade/Rotor Performance Model; (4) Hydrofoil Survey and Selection; (5) FEM Structural Design; and (6) Develop Candidate Rotor Designs and Prepare Final Report.

Paquette, J. A.

2012-03-01T23:59:59.000Z

137

CFD analysis of rotating two-bladed flatback wind turbine rotor.  

SciTech Connect (OSTI)

The effects of modifying the inboard portion of the NREL Phase VI rotor using a thickened, flatback version of the S809 design airfoil are studied using a three-dimensional Reynolds-averaged Navier-Stokes method. A motivation for using such a thicker airfoil design coupled with a blunt trailing edge is to alleviate structural constraints while reducing blade weight and maintaining the power performance of the rotor. The calculated results for the baseline Phase VI rotor are benchmarked against wind tunnel results obtained at 10, 7, and 5 meters per second. The calculated results for the modified rotor are compared against those of the baseline rotor. The results of this study demonstrate that a thick, flatback blade profile is viable as a bridge to connect structural requirements with aerodynamic performance in designing future wind turbine rotors.

van Dam, C.P. (University of California, David, CA); Chao, David D.; Berg, Dale E. (University of California, David, CA)

2008-04-01T23:59:59.000Z

138

Quantum dots in bio-imaging: Revolution by the small  

SciTech Connect (OSTI)

Visual analysis of biomolecules is an integral avenue of basic and applied biological research. It has been widely carried out by tagging of nucleotides and proteins with traditional fluorophores that are limited in their application by features such as photobleaching, spectral overlaps, and operational difficulties. Quantum dots (QDs) are emerging as a superior alternative and are poised to change the world of bio-imaging and further its applications in basic and applied biology. The interdisciplinary field of nanobiotechnology is experiencing a revolution and QDs as an enabling technology have become a harbinger of this hybrid field. Within a decade, research on QDs has evolved from being a pure science subject to the one with high-end commercial applications.

Arya, Harinder [Gene Function Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562 (Japan); Kaul, Zeenia [Gene Function Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562 (Japan); Wadhwa, Renu [Gene Function Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562 (Japan); Taira, Kazunari [Gene Function Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562 (Japan); Hirano, Takashi [Institute for Biological Resources and Functions, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, 7 Ibaraki 305-8562 (Japan); Kaul, Sunil C. [Gene Function Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562 (Japan)]. E-mail: s-kaul@aist.go.jp

2005-04-22T23:59:59.000Z

139

Pump impeller-shroud leakage path forces: their effect on a Jeffcott rotor  

E-Print Network [OSTI]

for finding the frequency of free vibration as well as system stability. All results lead to the conclusion that the forces have little influence on natural frequency but can have appreciable effects on system stability. Specifically, at higher values.... Figure 15. Frequency response: whirl amplitude. Frequency response: phase angle, Rotor orbit during free vibration. Time history of rotor whirl frequency ratio during free vibration, 32 32 36 36 Figure 16. Figure 17. Rotor orbit during...

Williams, James Philip

1988-01-01T23:59:59.000Z

140

Toughness of Cr-Mo-V steels for steam-turbine rotors  

SciTech Connect (OSTI)

Cr-Mo-V steels are used extensively as the rotor material in the High Pressure and Intermediate Pressure Sections of modern steam turbines. The toughness of these rotors has a major influence on the reliability and efficiency of the turbine and the overall economy of operation and maintenance of the plant. The metallurgical factors affecting the toughness of the rotors and the methods to improve the toughness are now understood better than ever before. This paper will present a broad overview of the materials and design aspects of the toughness of Cr-Mo-V rotors with emphasis on the salient results of recent research programs aimed at improving their toughness.

Viswanathan, R.; Jaffee, R.I.

1982-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Tuning thermal mismatch between turbine rotor parts with a thermal medium  

DOE Patents [OSTI]

In a turbine rotor, an aft shaft wheel and the final-stage wheel of the rotor are coupled together, including by a rabbeted joint. During shutdown and startup of the turbine, a thermal mismatch between the aft shaft wheel and final-stage wheel is avoided by respectively heating and cooling the aft shaft wheel to maintain the thermal mismatch within acceptable limits, thereby avoiding opening of the rabbeted joint and the potential for unbalancing the rotor and rotor vibration. The thermal medium may be supplied by piping in the aft bearing cavity into the cavity between the forward closure plate and the aft shaft wheel.

Schmidt, Mark Christopher (Niskayuna, NY)

2001-01-01T23:59:59.000Z

142

Methods and apparatus for reduction of asymmetric rotor loads in wind turbines  

DOE Patents [OSTI]

A method for reducing load and providing yaw alignment in a wind turbine includes measuring displacements or moments resulting from asymmetric loads on the wind turbine. These measured displacements or moments are used to determine a pitch for each rotor blade to reduce or counter asymmetric rotor loading and a favorable yaw orientation to reduce pitch activity. Yaw alignment of the wind turbine is adjusted in accordance with the favorable yaw orientation and the pitch of each rotor blade is adjusted in accordance with the determined pitch to reduce or counter asymmetric rotor loading.

Moroz, Emilian Mieczyslaw; Pierce, Kirk Gee

2006-10-10T23:59:59.000Z

143

Design Assessments of a Magnetic-geared Double-rotor Permanent Magnet Generator.  

E-Print Network [OSTI]

??The purpose of this research is to provide systematic design of a permanent magnet (PM) generator, by adopting the double-rotor and the coaxial magnetic gear… (more)

Chung, He-Yu

2013-01-01T23:59:59.000Z

144

Neural Network Based Modeling of a Large Steam Turbine-Generator Rotor Body Parameters from On-Line Disturbance Data  

E-Print Network [OSTI]

Neural Network Based Modeling of a Large Steam Turbine-Generator Rotor Body Parameters from On technique to estimate and model rotor- body parameters of a large steam turbine-generator from real time

145

EGYPT: The Revolution and the Future February 17, 2011, 7:30 p.m.  

E-Print Network [OSTI]

EGYPT: The Revolution and the Future February 17, 2011, 7:30 p.m. Kane Hall, Room 210 University ELLIS GOLDBERG, Professor of Political Science, University of Washington, Specialist on Egypt

Hochberg, Michael

146

Hybrid Rotor Compression for Multiphase and Liquids-Rich Wellhead  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmasSandy-Nor'easter SituationHybrid Hybrid Rotor

147

The Ultra-micro Wave Rotor Research at Michigan State University Florin Iancu, Janusz Piechna*  

E-Print Network [OSTI]

University of Technology 24 Nowowiejska Str., 00-665 Warsaw, Poland ABSTRACT Ultra Micro Gas Turbines (Uµ concepts of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors be estimated at about 70%. 1. INTRODUCTION Starting in 1995, with the MIT "Micro Gas Turbine" project

MĂĽller, Norbert

148

Nonlinear Dynamics of a Rotor Supported by Homopolar Magnetic Bearings with Saturation  

E-Print Network [OSTI]

magnetic bearing model. The nonlinear dynamics of permanent magnet-biased homopolar magnetic bearing (PMB HoMB) system with 2-dof rigid and 4-dof flexible rotor is analyzed. The dynamic behavior of the rotor-bearing system is examined in the feedback...

Kang, Kyungdae

2011-02-22T23:59:59.000Z

149

H-G Diagram Based Rotor Parameters Identification for Induction Motors Thermal Monitoring  

E-Print Network [OSTI]

H-G Diagram Based Rotor Parameters Identification for Induction Motors Thermal Monitoring Mohamed: In this paper, an effective on-line method for induction motor parameter identification, especially rotor for each operating point. Computer simulations and experimental tests, carried out for a 4-kW four

Brest, Université de

150

Numerical modeling of heat transfer and fluid flow in rotor-stator cavities with throughflow  

E-Print Network [OSTI]

Numerical modeling of heat transfer and fluid flow in rotor-stator cavities with throughflow S in a rotor-stator cavity subjected to a superimposed throughflow with heat transfer. Nu- merical predictions field from the heat transfer process. The turbulent flux is approximated by a gradient hypothesis

Boyer, Edmond

151

Numerical Investigation of a Wind Turbine Rotor with an aerodynamically redesigned hub-region  

E-Print Network [OSTI]

Numerical Investigation of a Wind Turbine Rotor with an aerodynamically redesigned hub-region J methods on a redesigned modern Mega-Watt sized wind turbine, where the new design includes an increase of the blade in the vicinity of the wind turbine nacelle, to obtain an aerodynamically more efficient rotor

152

RIS0-M-2432 SIMPLIFIED LAWS OF SIMIALRITY FOR WIND TURBINE ROTORS  

E-Print Network [OSTI]

RIS0-M-2432 SIMPLIFIED LAWS OF SIMIALRITY FOR WIND TURBINE ROTORS Helge Petersen The Test Station for Small Windmills Abstract, Laws of similarity or scaling laws for the character- istics of a wind turbine rotor are of importance to the designer even during the initial design phase of a new wind turbine con

153

Thermodynamic Cycle Analysis for Wave Rotor Combustor Based Combined Cycle Jessica Collins1  

E-Print Network [OSTI]

Thermodynamic Cycle Analysis for Wave Rotor Combustor Based Combined Cycle Jessica Collins1 , Brian of Engineering and Technology The conventional combustor that exists in today's market is a constant pressure device; whereas, the wave rotor combustor investigated in the present research is a constant volume

Zhou, Yaoqi

154

Sparkr Blade Test Centre Wind turbines with a rotor diameter exceed-  

E-Print Network [OSTI]

Sparkćr Blade Test Centre Wind turbines with a rotor diameter exceed- ing 2 metres must have a type of a wind turbine. Failure of a rotor blade in service often involves damage of the entire turbine operating type cer- tification systems for wind turbines. Reg. no. 427 The Sparkćr Blade Test Centre became

155

RECENT ADVANCES IN SMART-MATERIAL ROTOR CONTROL ACTUATION. Victor Giurgiutiu*,  

E-Print Network [OSTI]

RECENT ADVANCES IN SMART-MATERIAL ROTOR CONTROL ACTUATION. Victor Giurgiutiu*, University of South achievements in the application of active-materials actuation to counteract aeroelastic and vibration effects and capabilities is done first. Attention is focused on the smart rotor-blade applications. The induced twist

Giurgiutiu, Victor

156

A review of "Political Speaking Justified: Women Prophets and the English Revolution" By Teresa Feroli  

E-Print Network [OSTI]

214 SEVENTEENTH-CENTURY NEWS the 1640s and 1650s. And that complexity is, after all, a major source of our fascination with the period. Teresa Feroli. Political Speaking Justified: Women Prophets and the English Revolution. Newark, DE: University... the political sphere during the English Revolution and Restoration by claiming authority to speak based on their identity as women. Her aim, in part, is to locate female political consciousness much earlier than has historiographically been supposed. More...

Parker, B. F.

2007-01-01T23:59:59.000Z

157

Advanced Flywheel Composite Rotors: Low-Cost, High-Energy Density Flywheel Storage Grid Demonstration  

SciTech Connect (OSTI)

GRIDS Project: Boeing is developing a new material for use in the rotor of a low-cost, high-energy flywheel storage technology. Flywheels store energy by increasing the speed of an internal rotor —slowing the rotor releases the energy back to the grid when needed. The faster the rotor spins, the more energy it can store. Boeing’s new material could drastically improve the energy stored in the rotor. The team will work to improve the storage capacity of their flywheels and increase the duration over which they store energy. The ultimate goal of this project is to create a flywheel system that can be scaled up for use by electric utility companies and produce power for a full hour at a cost of $100 per kilowatt hour.

None

2010-10-01T23:59:59.000Z

158

VOL. 6, NO. 5, SEPT.-OCT. 1990 J. PROPULSION 621 Stator/Rotor Interaction in a Transonic Turbine  

E-Print Network [OSTI]

on the rotor blade, reflects upstream, and then reflects again off the stator blade Presented as Paper 88 and shows the large unsteadiness in the lift on the rotor blade. Basic NumericalMethod The flowfiVOL. 6, NO. 5, SEPT.-OCT. 1990 J. PROPULSION 621 Stator/Rotor Interaction in a Transonic Turbine

Giles, Mike

159

Planar velocity measurements in two rotorcraft flows are presented. The first is that of an isolated rotor  

E-Print Network [OSTI]

-light-based measurement system. The second flowfield is that of a rotor wake interacting with a fixed wing in a wind field. Isolated rotor in axial flight Substantial uncertainties remain in modeling the wake typical of a full-scale rotor wake. The clean periodicity of this flow allows capture of fundamental

160

WindPACT Turbine Rotor Design Study: June 2000--June 2002 (Revised)  

SciTech Connect (OSTI)

This report presents the results of the turbine rotor study completed by Global Energy Concepts (GEC) as part of the U.S. Department of Energy's WindPACT (Wind Partnership for Advanced Component Technologies) project. The purpose of the WindPACT project is to identify technology improvements that will enable the cost of energy from wind turbines to fall to a target of 3.0 cents/kilowatt-hour in low wind speed sites. The study focused on different rotor configurations and the effect of scale on those rotors.

Malcolm, D. J.; Hansen, A. C.

2006-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Adaptor assembly for coupling turbine blades to rotor disks  

SciTech Connect (OSTI)

An adaptor assembly for coupling a blade root of a turbine blade to a root slot of a rotor disk is disclosed. The adaptor assembly may generally include an adaptor body having a root configured to be received within the root slot. The adaptor body may also define a slot having an open end configured to receive the blade root. The adaptor body may further define a channel. The adaptor assembly may also include a plate having an outwardly extending foot. The foot may be configured to be received within the channel. Additionally, the plate may be configured to cover at least a portion of the open end of the slot when the foot is received within the channel.

Delvaux, John McConnel; Garcia-Crespo, Andres Jose; Joyce, Kilmer Joseph; Tindell, Allan Randall

2014-06-03T23:59:59.000Z

162

Vibration analysis of rotor systems using reduced subsystem models  

E-Print Network [OSTI]

and concern. Thanks are also extended to Dr. Alan B. Alter and Dr. Charles F. Rettleborough for their contribution to my academic program at Texas A&M University. NOMENCLATURE [] [A] [Cl [D?l [r?] (F} [G] [l-l ['~, , l ['J, ] Jrz [K] [Ml {p... of the spinning rotor can be written as m. R. Z + f. = f. + m. ai?y + m. ai?p i iZ iZ iX i iX i iY + '2 id&iY ?iY ?iY ' & iP&ix ' e iXZ ' & iYZ (la) 2 ?i id( iX iX ?ix ~ ip~iY ~ iYZ ~iXZ (lb) where / Hydrogen I or o 0 p um'p Hain Combusrion Chamber Z...

Fan, Uei-Jiun

1985-01-01T23:59:59.000Z

163

Final project report: High energy rotor development, test and evaluation  

SciTech Connect (OSTI)

Under the auspices of the {open_quotes}Government/Industry Wind Technology Applications Project{close_quotes} [{open_quotes}Letter of Interest{close_quotes} (LOI) Number RC-1-11101], Flo Wind Corp. has successfully developed, tested, and delivered a high-energy rotor upgrade candidate for their 19-meter Vertical Axis Wind Turbine. The project included the demonstration of the innovative extended height-to-diameter ratio concept, the development of a continuous span single-piece composite blade, the demonstration of a continuous blade manufacturing technique, the utilization of the Sandia National Laboratories developed SNLA 2150 natural laminar flow airfoil and the reuse of existing wind turbine and wind power plant infrastructure.

NONE

1996-09-01T23:59:59.000Z

164

Assessment of research needs for wind turbine rotor materials technology  

SciTech Connect (OSTI)

Wind-driven power systems is a renewable energy technology that is still in the early stages of development. Wind power plants installed in early 1980s suffered structural failures chiefly because of incomplete understanding of wind forces (turbulent), in some cases because of poor product quality. Failures of rotor blades are now somewhat better understood. This committee has examined the experience base accumulated by wind turbines and the R and D programs sponsored by DOE. It is concluded that a wind energy system such as is described is within the capability of engineering practice; however because of certain gaps in knowledge, and the presence of only one major integrated manufacturer of wind power machines in the USA, a DOE R and D investment is still required.

Not Available

1991-01-01T23:59:59.000Z

165

Cooling system for a bearing of a turbine rotor  

DOE Patents [OSTI]

In a gas turbine, a bore tube assembly radially inwardly of an aft bearing conveys cooling steam to the buckets of the turbine and returns the cooling steam to a return. To cool the bearing and thermally insulate the bearing from the cooling steam paths, a radiation shield is spaced from the bore tube assembly by a dead air gap. Additionally, an air passageway is provided between the radiation shield and the inner surface of an aft shaft forming part of the rotor. Air is supplied from an inlet for flow along the passage and radially outwardly through bores in the aft shaft disk to cool the bearing and insulate it from transfer of heat from the cooling steam.

Schmidt, Mark Christopher (Niskayuna, NY)

2002-01-01T23:59:59.000Z

166

The cost of noise reduction for departure and arrival operations of commercial tilt rotor aircraft  

E-Print Network [OSTI]

The relationship between direct operating cost (DOC) and noise annoyance due to a departure and an arrival operation was developed for commercial tilt rotor aircraft. This was accomplished by generating a series of tilt ...

Faulkner, Henry B.

1976-01-01T23:59:59.000Z

167

American Institute of Aeronautics and Astronautics Wave Rotor Research Program at Michigan State University  

E-Print Network [OSTI]

and power generation purposes including utilization of wave rotors for microturbines, ultra-micro gas turbines, and water refrigeration systems. In collaboration with the research team at Warsaw University

MĂĽller, Norbert

168

Identification of rotordynamic forces in a flexible rotor system using magnetic bearings  

E-Print Network [OSTI]

Methods are presented for parameter identification of an annular gas seal on a flexiblerotor test rig. Dynamic loads are applied by magnetic bearings (MBs) that support the rotor. MB forces are measured using fiber-optic strain gauges...

Zutavern, Zachary Scott

2009-06-02T23:59:59.000Z

169

A study of chaos in a rotor system supported by ball bearings  

E-Print Network [OSTI]

. Numerous researchers have published a myriad of papers on the application of chaos theory to mechanical, electrical and biological systems. However, control theories of chaos have been in existence for only a decade and have not been applied to rotor...

Ortiz, Steven Rey

2013-02-22T23:59:59.000Z

170

An efficient algorithm for blade loss simulations applied to a high-order rotor dynamics problem  

E-Print Network [OSTI]

In this thesis, a novel approach is presented for blade loss simulation of an aircraft gas turbine rotor mounted on rolling element bearings with squeeze film dampers, seal rub and enclosed in a flexible housing. The modal truncation augmentation...

Parthasarathy, Nikhil Kaushik

2004-09-30T23:59:59.000Z

171

Hybrid gas bearings with controlled supply pressure to eliminate rotor vibrations while crossing system critical speeds  

E-Print Network [OSTI]

Micro-turbomachinery (MTM) implements gas bearings in compact units of enhanced mechanical reliability. Gas bearings, however, have little damping and are prone to wear during frequent rotor start-up and shut down conditions. Externally pressurized...

Ryu, Keun

2009-05-15T23:59:59.000Z

172

A RIGOROUS, ENGINEER-FRIENDLY APPROACH FOR MODELING REALISTIC, COMPOSITE ROTOR BLADES  

E-Print Network [OSTI]

structures of the type encountered in wind turbine blades, helicopter rotor blades, and the like such as wind turbine blades lead to a splitting of the problem into a (usually) linear, two-dimensional cross

Yu, Wenbin

173

Effects of rotor tip clearance on an embedded compressor stage performance  

E-Print Network [OSTI]

Compressor efficiency variation with rotor tip gap is assessed using numerical simulations on an embedded stage representative of that in a large industrial gas turbine with Reynolds number being approximately 2 x 106 to ...

Sakulkaew, Sitanun

2012-01-01T23:59:59.000Z

174

UPWIND, Aerodynamics and aero-elasticity Rotor aerodynamics in atmospheric shear flow  

E-Print Network [OSTI]

UPWIND, Aerodynamics and aero-elasticity Rotor aerodynamics in atmospheric shear flow Niels N codes for wind turbines utilize aerodynamics based on BEM methods, see [1, 2]. For modern large scale

175

An embedded controller for quad-rotor flying robots running distributed algorithms  

E-Print Network [OSTI]

Multiple collaborating quad-rotor flying robots are useful in a broad range of applications, from surveillance with onboard cameras to reconfiguration of wireless networks. For these applications, it is often advantageous ...

Julian, Brian John

2009-01-01T23:59:59.000Z

176

Measurements of imbalance response for a rigid rotor fully supported on squeeze film dampers  

E-Print Network [OSTI]

speeds. Adding damping to a rotor-bearing system reduces vibration amplitudes and provides isolation from the support structure. Squeeze film dampers (SFD), if properly employed, have been shown to effectively provide viscous damping and attenuate...

Lubell, Daniel Roger

2000-01-01T23:59:59.000Z

177

The effect of teeth-on-stator labyrinth seals on rotor imbalance response  

E-Print Network [OSTI]

, diverging and straight refer to the pattern of cleatances between the blades and the rotor in the direction of fluid flow. Figure 2 depicts the seal clearance patterns. Synchronous response tests wctu repeated after installation of each seal to observe...THE EFFECT OF TEETH-ON-STATOR LABYRINTH SEALS ON ROTOR IMBALANCE RESPONSE A Thesis by EILEEN MARIE CONWAY Submitted to the Office of Graduate Studies of Texas ASM University in partial fulfillment of the requirements for the degree of MASTER...

Conway, Eileen Marie

1991-01-01T23:59:59.000Z

178

Ris-R-1486(EN) KNOW-BLADE Task-3.3 report; Rotor  

E-Print Network [OSTI]

an array of VGs. The wind turbine blade is the LM19.1 blade equipped with one pair of VGs placed at radiusRisø-R-1486(EN) KNOW-BLADE Task-3.3 report; Rotor Blade Computations with 3D Vortex Generators: KNOW-BLADE Task-3.3 report; Rotor Blade Computations with 3D Vortex Generators Risø-R-1486(EN) January

179

Imbalance response of a rigid rotor supported on end sealed integral squeeze film dampers  

E-Print Network [OSTI]

IMBALANCE RESPONSE OF A RIGID ROTOR SUPPORTED ON END SEALED INTEGRAL SQUEEZE FILM DAMPERS A Thesis by OSCAR CESAR DE SANTIAGO DURAN Submitted to the Ofhce of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1998 Major Subject: Mechanical Engineering IMBALANCE RESPONSE OF A RIGID ROTOR SUPPORTED ON END SEALED INTEGRAL SQUEEZE FILM DAMPERS A Thesis by OSCAR. CESAR DE SANTIAGO DURAN Submitted to Texas ARM University...

De Santiago Duran, Oscar Cesar

1998-01-01T23:59:59.000Z

180

Analytical determination of performance degradation on a helicopter main rotor due to ice accretion  

E-Print Network [OSTI]

ANALYTICAL DETERMINATION OF PERFORMANCE DEGRADATION ON A HELICOPTER MAIN ROTOR DUE TO ICE ACCRETION A Thesis by JAVIER CAMBA III Submitted to the Graduate College of Texas AIIM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1986 Major Subject: Aerospace Engineering ANALYTICAL DETERMINATION OF PERFORMANCE DEGRADATION ON A HELICOPTER MAIN ROTOR DUE TO ICE ACCRETION A Thesis by JAVIER CAMBA III Approval as to style and content by...

Camba, Javier

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Genetic icing effects on forward flight performance of a model helicopter rotor  

E-Print Network [OSTI]

GENERIC ICING EFFECTS ON FORWARD FLIGHT PERFORMANCE OF A MODEL HELICOPTER ROTOR A Thesis ANA FIORELLA TINETTI-SANCHEZ Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 1987 Major Subject: Aerospace Engineering GENERIC ICING EFFECTS ON FORWARD FLIGHT PERFORMANCE OF A MODEL HELICOPTER ROTOR A Thesis by ANA FIORELLA TINETTI-SANCHEZ Approved as to style and content by: Kenneth D. Korkan...

Tinetti-Sanchez, Ana Fiorella

1987-01-01T23:59:59.000Z

182

How to improve open rotor aerodynamics at cruise and take-off  

E-Print Network [OSTI]

1 Copyright © 2014 University of Cambridge DRAFT – HOW TO IMPROVE OPEN ROTOR AERODYNAMICS AT CRUISE AND TAKE-OFF Cesare Hall, Alexios Zachariadis, Tobias Brandvik, Nishad Sohoni cah1003@cam.ac.uk University of Cambridge, Whittle... Laboratory 1 JJ Thomson Avenue, Cambridge CB3 0DY ABSTRACT A key challenge in open rotor design is getting the optimum aerodynamics at both the cruise and take-off conditions. This is particularly difficult because the operation and the requirements...

Hall, Cesare; Zachariadis, Alexios; Brandvik, Tobias; Sohoni, Nishad

183

Method and apparatus for reducing rotor blade deflections, loads, and/or peak rotational speed  

DOE Patents [OSTI]

A method for reducing at least one of loads, deflections of rotor blades, or peak rotational speed of a wind turbine includes storing recent historical pitch related data, wind related data, or both. The stored recent historical data is analyzed to determine at least one of whether rapid pitching is occurring or whether wind speed decreases are occurring. A minimum pitch, a pitch rate limit, or both are imposed on pitch angle controls of the rotor blades conditioned upon results of the analysis.

Moroz, Emilian Mieczyslaw; Pierce, Kirk Gee

2006-10-17T23:59:59.000Z

184

The Rock Varnish Revolution: New Insights from Microlaminations and the Contributions of Tanzhuo Liu  

E-Print Network [OSTI]

in potential source materials. In the ensuing two centu- ries, investigations into rock varnish have beenThe Rock Varnish Revolution: New Insights from Microlaminations and the Contributions of Tanzhuo Liu Ronald I. Dorn* School of Geographical Sciences, Arizona State University Abstract Rock varnish

Dorn, Ron

185

Geospatial revolution and remote sensing LiDAR in Mesoamerican archaeology  

E-Print Network [OSTI]

#12;Geospatial revolution and remote sensing LiDAR in Mesoamerican archaeology Arlen F. Chasea,1. The impor- tance of this geospatial innovation is demonstrated with newly acquired LiDAR data from in the remote geospatial imaging of cultural landscapes, including ancient communities and their anthropogenic

Weishampel, John F.

186

HIST 462: The French Revolution and Napoleonic Era Gregory Brown; gbrown@unlv.nevada.edu; 8954181  

E-Print Network [OSTI]

and Society a. Popkin 8 14 /Doyle 66 85 b. Campbell 239 ­ 265 c. Tackett 19 ­ 47 d. Dubois, 30 72. Campbell, 139 ­ 218 c. Tackett, 48 ­ 76 d. Dubois, 73 84 5. Sept 20, 22 Coming of the FrenchHIST 462: The French Revolution and Napoleonic Era Gregory Brown; gbrown@unlv.nevada.edu; 8954181

Ahmad, Sajjad

187

Nanorobotics is an emerging interdisciplinary technology area raising new scientific challenges and promising revolution-  

E-Print Network [OSTI]

and promising revolution- ary advancements in applications such as medicine, biology and industrial function, as well as for identifying ways of designing protein-based nano- mechanical systems. Industrial Nanorobotics The papers in the second group of this special issue are rel- evant to industrial nanorobotics (or

Mavroidis, Constantinos

188

Control system for a wound-rotor motor  

DOE Patents [OSTI]

A load switching circuit for switching two or more transformer taps under load carrying conditions includes first and second parallel connected bridge rectifier circuits which control the selective connection of a direct current load to taps of a transformer. The first bridge circuit is normally conducting so that the load is connected to a first tap through the first bridge circuit. To transfer the load to the second tap, a switch is operable to connect the second bridge circuit to a second tap, and when the second bridge circuit begins to conduct, the first bridge circuit ceases conduction because the potential at the second tap is higher than the potential at the first tap, and the load is thus connected to the second tap through the second bridge circuit. The load switching circuit is applicable in a motor speed controller for a wound-rotor motor for effecting tap switching as a function of motor speed while providing a stepless motor speed control characteristic.

Ellis, James N. (Chatsworth, CA)

1983-01-01T23:59:59.000Z

189

Dynamic Rotor Deformation and Vibration Monitoring Using a Non-Incremental Laser Doppler Distance Sensor  

SciTech Connect (OSTI)

Monitoring rotor deformations and vibrations dynamically is an important task for improving the safety and the lifetime as well as the energy efficiency of motors and turbo machines. However, due to the high rotor speed encountered in particular at turbo machines, this requires concurrently a high measurement rate and high accuracy, which can not be fulfilled by most commercially available sensors. To solve this problem, we developed a non-incremental laser Doppler distance sensor (LDDS), which is able to measure simultaneously the in-plane velocity and the out-of-plane position of moving rough solid objects with micrometer precision. In addition, this sensor concurrently offers a high temporal resolution in the microsecond range, because its position uncertainty is in principle independent of the object velocity in contrast to conventional distance sensors, which is a unique feature of the LDDS. Consequently, this novel sensor enables precise and dynamic in-process deformation and vibration measurements on rotating objects, such as turbo machine rotors, even at very high speed. In order to evidence the capability of the LDDS, measurements of rotor deformations (radial expansion), vibrations and wobbling motions are presented at up to 50,000 rpm rotor speed.

Pfister, Thorsten; Guenther, Philipp; Dreier, Florian; Czarske, Juergen [Technische Universitaet Dresden, Faculty of Electrical Engineering and Information Technology, Laboratory for Measurement and Testing Techniques, Helmholtzstrasse 18, D-01062 Dresden (Germany)

2010-05-28T23:59:59.000Z

190

NON-STATIONARY TEMPERATURE STRESSES IN THE INDUSTRIAL STEAM TURBINE ROTOR  

E-Print Network [OSTI]

The usage of industrial steam turbines in different industrial branches (chemistry, petrochemistry, refineries, sugar and ethanol plants, etc.) for a generator drive for electricity generation or a mechanical drive for compressors, blowers and pumps, is characterized by the need for high flexibility of operation. High flexibility includes numerous start-ups, shut-downs and power changes during the useful life. Changes in power and steam mass flow lead to changes of the working fluid state in the single turbine stages, and thus their aerodynamic and thermodynamic characteristics. During these transient working regimes in steam turbine rotors, large space and time-dependent temperature gradients appear, which can result in high non-stationary temperature stresses, i.e. increased local stress concentrations, what has a negative impact on the useful life of the rotor. In the worst case they can cause fracture of the turbine rotor. Today, for the determination of thermal stressed state of the steam turbine parts the user softwares based on numerical methods are used. In this paper the results of numerical modelling and calculations of non-stationary temperature fields and related stresses in the rotor of industrial steam turbine of 35 MW power during transient operating regime (a cold startup) will be presented. The results of the calculations serve for estimation of the transient regime impact on the stresses of the rotor, as well as on its entire useful life. Key words: industrial steam turbine, transient regimes, temperature stresses, numerical modelling 1.

Zvonimir Guzovi?; Krešimir Kova?i?; Tihomir Mihali?

191

Non-equilibrium steady state and subgeometric ergodicity for a chain of three coupled rotors  

E-Print Network [OSTI]

We consider a chain of three rotors (rotators) whose ends are coupled to stochastic heat baths. The temperatures of the two baths can be different, and we allow some constant torque to be applied at each end of the chain. Under some non-degeneracy condition on the interaction potentials, we show that the process admits a unique invariant probability measure, and that it is ergodic with a stretched exponential rate. The interesting issue is to estimate the rate at which the energy of the middle rotor decreases. As it is not directly connected to the heat baths, its energy can only be dissipated through the two outer rotors. But when the middle rotor spins very rapidly, it fails to interact effectively with its neighbors due to the rapid oscillations of the forces. By averaging techniques, we obtain an effective dynamics for the middle rotor, which then enables us to find a Lyapunov function. This and an irreducibility argument give the desired result. We finally illustrate numerically some properties of the non-equilibrium steady state.

Noé Cuneo; Jean-Pierre Eckmann; Christophe Poquet

2014-11-03T23:59:59.000Z

192

Transient analysis of a flywheel battery containment during a full rotor burst event.  

SciTech Connect (OSTI)

Flywheels are being developed for use in an Advanced Locomotive Propulsion System (ALPS) targeted for use in high speed passenger rail service. The ALPS combines high performance, high speed gas turbines, motor/generators and flywheels to provide a light-weight, fuel-efficient power system. Such a system is necessary to avoid the high cost of railway electrification, as is currently done for high speed rail service (>100mph) since diesels are too heavy. The light-weight flywheel rotors are made from multilayered composite materials, and are operated at extremely high energy levels. Metal containment structures have been designed to enclose the rotors and provide encapsulation of the rotor during postulated failure events. One such event is a burst mode failure of the rotor in which the composite rim is assumed to burst into debris that impacts against the containment. This paper presents a finite element simulation of the transient structural response of a subscale metal flywheel containment structure to a rotor burst event.

Hsieh, B. J.

1998-04-17T23:59:59.000Z

193

Axial seal system for a gas turbine steam-cooled rotor  

DOE Patents [OSTI]

An axial seal assembly is provided at the interface between adjacent wheels and spacers of a gas turbine rotor and disposed about tubes passing through openings in the rotor adjacent the rotor rim and carrying a thermal medium. Each seal assembly includes a support bushing for supporting a land of the thermal medium carrying tube, an axially registering seat bushing disposed in the opposed opening and a frustoconical seal between the seal bushing and seat. The seal bushing includes a radial flange having an annular recess for retaining the outer diameter edge of the seal, while the seat bushing has an axially facing annular surface forming a seat for engagement by the inner diameter edge of the seal.

Mashey, Thomas Charles (Anderson, SC)

2002-01-01T23:59:59.000Z

194

THE JOURNAL OF CHEMICAL PHYSICS 135, 094304 (2011) "Adiabatic-hindered-rotor" treatment of the parahydrogen-water complex  

E-Print Network [OSTI]

THE JOURNAL OF CHEMICAL PHYSICS 135, 094304 (2011) "Adiabatic-hindered-rotor" treatment of the parahydrogen-water complex Tao Zeng,1 Hui Li,2 Robert J. Le Roy,1 and Pierre-Nicholas Roy1,a) 1 Department 1 September 2011) Inspired by a recent successful adiabatic-hindered-rotor treatment

Le Roy, Robert J.

195

Published by the Centrifuge Instrument Systems Development Center of Beckman Coulter, Inc., Palo Alto, California 94304 SW 41 Ti ROTOR  

E-Print Network [OSTI]

Published by the Centrifuge Instrument Systems Development Center of Beckman Coulter, Inc., Palo and understood before operation or maintenance of this equip- ment is attempted. When you see the symbol on other the performance of the rotor. This rotor was developed, manufactured, and tested for safety and reliability

Pawlowski, Wojtek

196

Scnarios d'interaction rotor/stator pour un compresseur haute pression d'un moteur d'hlicoptre  

E-Print Network [OSTI]

Scénarios d'interaction rotor/stator pour un compresseur haute pression d'un moteur d'hélicoptère A plus de prévoir les zones d'interaction. Rotor-stator interaction scenarios for the centrifugal in the centrifugal com- pressor of helicopter engines when structural contacts occur between the blade

Boyer, Edmond

197

The development of an experimental procedure to determine the amount of active internal friction in a rotor-bearing system  

E-Print Network [OSTI]

. The logarithmic decrement as calculated by the time response is used to determine the active friction force. By affecting the vibrational mode shape (by the use of weights at each end), the free-free rotor can simulate the frictional characteristics of a rotor...

Parker, Jeffrey Scott

1997-01-01T23:59:59.000Z

198

The Rise And Fall Of The Muslim Brotherhood In The Egyptian Revolution: The Interplay of Narrative And Other Factors  

E-Print Network [OSTI]

This study examines the interplay of narrative and other factors in the rise and fall of the Muslim Brotherhood during the Egyptian Revolution. I hypothesize that narrative played a major role in the Muslim Brotherhoods rise to power...

Tombaugh, William

2013-08-31T23:59:59.000Z

199

A review of "Mirrors of Revolution: Conflict and Political Identity in Early Modern Europe" by Francesco Benigno  

E-Print Network [OSTI]

, various groups saw individual opportunities within supporting the King. e work is solid and straightforward and works to expand our understanding of the other side of the British Civil Wars. Francesco Benigno. Mirrors of Revolution: Con#29;ict...

Worcester, Thomas

2011-01-01T23:59:59.000Z

200

A Hierarchy of Linear Threshold Models for the Spread of Political Revolutions on Social Networks  

E-Print Network [OSTI]

We study a linear threshold agent-based model (ABM) for the spread of political revolutions on social networks using empirical network data. We propose new techniques for building a hierarchy of simplified ordinary differential equation (ODE) based models that aim to capture essential features of the ABM, including effects of the actual networks, and give insight in the parameter regime transitions of the ABM. We relate the ABM and the hierarchy of models to a population-level compartmental ODE model that we proposed previously for the spread of political revolutions [1], which is shown to be mathematically consistent with the proposed ABM and provides a way to analyze the global behaviour of the ABM. This consistency with the linear threshold ABM also provides further justification a posteriori for the compartmental model of [1]. Extending concepts from epidemiological modelling, we define a basic reproduction number $R_0$ for the linear threshold ABM and apply it to predict ABM behaviour on empirical networ...

Lang, John C

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

The effect of adding axial freedom to the blades of a two bladed helicopter rotor  

E-Print Network [OSTI]

cire used on the rotor, the link nas all the blades attacned to it, and tne "teeter-totter" nin!;e rr&rst be excnanSe&! for a univ& rsal point, preferably of tne con: t-rrrt velocitv tyi e. Tne a?de&& blades snoula rrnve a stabilizin;, . irif i...THE Epr'ECT OZ ADDIRQ AX' AL RREEDO?l TO THE Bl ADRS QF A TWO BLADED HELICOPTER ROTOR A Thesis Frank Robert Oradat, Jr. Approveo as to style and content by: (Cnair. san of Co xttee) (liead of Dep tment) May I955 THE EPPECT OP ADDING AXIAL...

Oradat, Frank Robert

1953-01-01T23:59:59.000Z

202

Effect of a straight teeth-on-rotor labyrinth seal on rotordynamics  

E-Print Network [OSTI]

functions were made with the rotor spinning at 4500 rpm with the pressure in the seal section ranging from 0 ? 175 psig, with 25 psi steps. The effects of the increased pressure are presented in the discussion of the results. There is one other point...EFFECT OF A STRAIGHT TEETH-ON-ROTOR LABYRINTH SEAL ON ROTORDYNAMICS A Thesis by JOSEPH JOHN ZIERER, JR. Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER...

Zierer, Joseph John

1991-01-01T23:59:59.000Z

203

Improved Structure and Fabrication of Large, High-Power KHPS Rotors - Final Scientific/Technical Report  

SciTech Connect (OSTI)

Verdant Power, Inc, working in partnership with the National Renewable Energy Laboratory (NREL), Sandia National Laboratories (SNL), and the University of Minnesota St. Anthony Falls Laboratory (SAFL), among other partners, used evolving Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) models and techniques to improve the structure and fabrication of large, high-power composite Kinetic Hydropower System (KHPS) rotor blades. The objectives of the project were to: design; analyze; develop for manufacture and fabricate; and thoroughly test, in the lab and at full scale in the water, the improved KHPS rotor blade.

Corren, Dean [Verdant Power, Inc.; Colby, Jonathan [Verdant Power, Inc.; Adonizio, Mary Ann [Verdant Power, Inc.

2013-01-29T23:59:59.000Z

204

To cite this document: Barbiero, Franck and Vincent, Franois and Deloues, Thierry and Letestu, Franck Effects of rotor blade modulation on GNSS anti-jamming algorithms.  

E-Print Network [OSTI]

, Franck Effects of rotor blade modulation on GNSS anti-jamming algorithms. (2014) In: ION International be sent to the repository administrator: staff-oatao@inp-toulouse.fr #12;Effects of rotor blade modulation rotating bodies, the signal undergo complex and non-stationary effects called Rotor Blade Modulation (RBM

Mailhes, Corinne

205

Acting alone: U.S. unilateral uses of force, military revolutions, and hegemonic stability theory  

E-Print Network [OSTI]

ACTING ALONE: U.S. UNILATERAL USES OF FORCE, MILITARY REVOLUTIONS, AND HEGEMONIC STABILITY THEORY A Dissertation by BRADLEY FLORIAN PODLISKA Submitted to the Office of Graduate Studies of Texas A&M University in partial... A Dissertation by BRADLEY FLORIAN PODLISKA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee...

Podliska, Bradley Florian

2009-06-02T23:59:59.000Z

206

Radical Catholic resistance to the Mexican Revolution: the Cristero Rebellion and the Sinarquista Movement  

E-Print Network [OSTI]

RADICAL CATHOLIC RESISTANCE TO THE MEXICAN REVOLUTION: THE CRISTERO REBELLION AND THE SINARQUISTA MOVEMENT A Thesis by MARTIN TOMAS VELAZQUEZ Submitted to the Office of Graduate Studies of Texas A&M University in partial... by MARTIN TOMAS VELAZQUEZ Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF ARTS Approved by: Chair of Committee, Henry C. Schmidt Committee...

Velazquez, Martin Tomas

2009-05-15T23:59:59.000Z

207

The Communist revolution in Republican China: the conceptual development of the second united front.  

E-Print Network [OSTI]

THE COMMUNIS( RE'JOLUT ION IN REPUBL ICAN CHINA: THE CONCEPTUAL DEVELOPMENT OF THE SECOND UNITED FRONT A Thesis by BRIAN LANNES HOPE Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement... for the degree oi MASTER OF ARTS December, 1974 Major Subject: Political Science THE COMMUNIST REVOLUTION IN REPUBLICAN CHINA: THE CONCEPTUAL DEVELOPMENT OF THE SECOND UNITED FRONT A Thesis by BRIAN LANNES HOPE Approved as to style and content by: +~9...

Hope, Brian Lannes

1974-01-01T23:59:59.000Z

208

New membranes could speed the biofuels conversion process and reduce cost  

ScienceCinema (OSTI)

ORNL researchers have developed a new class of membranes that could enable faster, more cost efficient biofuels production. These membranes are tunable at the nanopore level and have potential uses in separating water from fuel and acid from bio-oils. The membrane materials technology just won an R&D 100 award. ORNL and NREL are partnering, with support from the DOE Bioenergy Technologies Office, to determine the best uses of these membranes to speed the biofuels conversion process. Development of the membranes was funded by DOE BETO and ORNL's Laboratory Directed Research and Development Program.

Hu, Michael

2014-08-06T23:59:59.000Z

209

New membranes could speed the biofuels conversion process and reduce cost  

SciTech Connect (OSTI)

ORNL researchers have developed a new class of membranes that could enable faster, more cost efficient biofuels production. These membranes are tunable at the nanopore level and have potential uses in separating water from fuel and acid from bio-oils. The membrane materials technology just won an R&D 100 award. ORNL and NREL are partnering, with support from the DOE Bioenergy Technologies Office, to determine the best uses of these membranes to speed the biofuels conversion process. Development of the membranes was funded by DOE BETO and ORNL's Laboratory Directed Research and Development Program.

Hu, Michael

2014-07-23T23:59:59.000Z

210

American Institute of Aeronautics and Astronautics Numerical Solutions for Ultra-Micro Wave Rotors (UWR)  

E-Print Network [OSTI]

, 48824 Starting in 1995, with the MIT "Micro Gas Turbine" project, the mechanical engineering research to an ultra-micro gas turbine. It discusses the advantages of wave rotor as topping units for gas turbines. Introduction ltra Micro Gas Turbines (UµGT) are expected to be the next generation of power source for any

MĂĽller, Norbert

211

Waves of constant shape and the structure of the \\rotors boundary" in excitable media.  

E-Print Network [OSTI]

wave patterns in R 2 , in terms of the kinematic approach. These patterns include rotating waves by Winfree [13]. The kinematic approach of [8] also considered a boundary of existence of spiral waveWaves of constant shape and the structure of the \\rotors boundary" in excitable media. Yu.E. Elkin

Biktashev, Vadim N.

212

2010 Asia-Pacific International Symposium on Aerospace Technology Rotor-stator interaction broadband noise  

E-Print Network [OSTI]

2010 Asia-Pacific International Symposium on Aerospace Technology Rotor-stator interaction-dimensional annular cascade to the impinging harmonic distortions. Each upstream har- monic mode is defined by its and Horan[2] . The #12;· 2 · Igor Vinogradov/ Chinese Journal of Aeronatics typical energy distribution over

Huang, Xun

213

Concurrent Aerodynamic Optimization of Rotor Blades Using a Nash Game Method  

E-Print Network [OSTI]

Concurrent Aerodynamic Optimization of Rotor Blades Using a Nash Game Method Enric Roca Le´on Ph Aerodynamics Leader, Airbus Helicopter, Marignane, France Michel Costes Research Engineer, ONERA, Meudon OF THE AMERICAN HELICOPTER SOCIETY Abstract A multi-objective strategy adapted to the aerodynamic concurrent

Paris-Sud XI, Université de

214

Numerical modeling of heat transfer and fluid flow in rotor-stator cavities with throughflow  

E-Print Network [OSTI]

Numerical modeling of heat transfer and fluid flow in rotor-stator cavities with throughflow S the dynamical effects from the heat transfer process. The fluid flow in an enclosed disk system with axial with heat transfer along the stator, which corresponds to the experiment of Djaoui et al. [2]. Our results

Boyer, Edmond

215

Performance of Rotors in a Brushless Doubly-Fed Induction Machine (BDFM)  

E-Print Network [OSTI]

a novel design of BDFM rotor, will perform in a BDFM configured as a variable speed generator. The results The BDFM is attractive as a variable speed generator for wind turbines. In this application, one stator. The BDFM operates in synchronous mode with a fixed relationship between the shaft speed, grid frequency

Cambridge, University of

216

Toward a Better Understanding of Ducted Rotor Antitorque and Directional Control in Forward Flight  

E-Print Network [OSTI]

of the Core Automatic Flight Control System (CAFCS) mode. Figure 1 shows a sustained, large-amplitude 1-Hz yaw ABSTRACT Despite decades of very successful yaw-control and anti-torque applications, the aerodynamics dramatic. From a handling-qualities perspective, the ducted rotor provides the loads capacity required

217

MPC for Wind Power Gradients --Utilizing Forecasts, Rotor Inertia, and Central Energy Storage  

E-Print Network [OSTI]

MPC for Wind Power Gradients -- Utilizing Forecasts, Rotor Inertia, and Central Energy Storage iterations. We demonstrate our method in simulations with various wind scenarios and prices for energy. INTRODUCTION Today, wind power is the most important renewable energy source. For the years to come, many

218

Blade-forced vibration effects in turbomachinery rotor-stator interaction  

E-Print Network [OSTI]

This thesis presents the effects of blade-forced vibration in turbomachinery rotor-stator interaction. A quasi-three-dimensional multi-row analysis, based on an Euler/Navier-Stokes solver and a parallel computational algorithm, was used to simulate...

Collard, Joseph Eugene

2000-01-01T23:59:59.000Z

219

3-D Time-Accurate CFD Simulations of Wind Turbine Rotor Flow Fields  

E-Print Network [OSTI]

problems such as helicopter rotors and propellers. In particular, wind turbine blades can experience large from the tower support on downwind, horizontal axis wind turbines. These blade/inflow/tower wake in large scale wind turbines, because the blade passage frequency is well below the audible range

220

Preliminary Design Procedure for Gas TurbineTopping Reverse-Flow Wave Rotors  

E-Print Network [OSTI]

1 Preliminary Design Procedure for Gas TurbineTopping Reverse-Flow Wave Rotors Pezhman AKBARI1 for implementation in gas turbine applications. First, a thermodynamic cycle analysis evaluates the performance engine. Then, a one-dimensional analytical gas dynamic model of the high-pressure phase (charging zone

MĂĽller, Norbert

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Simplifying and speeding the management of intra-node cache coherence  

DOE Patents [OSTI]

A method and apparatus for managing coherence between two processors of a two processor node of a multi-processor computer system. Generally the present invention relates to a software algorithm that simplifies and significantly speeds the management of cache coherence in a message passing parallel computer, and to hardware apparatus that assists this cache coherence algorithm. The software algorithm uses the opening and closing of put/get windows to coordinate the activated required to achieve cache coherence. The hardware apparatus may be an extension to the hardware address decode, that creates, in the physical memory address space of the node, an area of virtual memory that (a) does not actually exist, and (b) is therefore able to respond instantly to read and write requests from the processing elements.

Blumrich, Matthias A. (Ridgefield, CT); Chen, Dong (Croton on Hudson, NY); Coteus, Paul W. (Yorktown Heights, NY); Gara, Alan G. (Mount Kisco, NY); Giampapa, Mark E. (Irvington, NY); Heidelberger, Phillip (Cortlandt Manor, NY); Hoenicke, Dirk (Ossining, NY); Ohmacht, Martin (Yorktown Heights, NY)

2012-04-17T23:59:59.000Z

222

Numerical methods of integration applied in the nonlinear dynamic analysis of shells of revolution  

E-Print Network [OSTI]

structural bel&avior a&d therefore cannot be used for nonlinear analyses. lhe second nðod of dynamic analysis uses numerical integra- tion of the equations of notion wit'bout necessitating a transforma- tion of coordinates. Tne numerical integration...!riinear beam analysis {first vibratory mode only) with the most prc!! ising methods b ing programmed for shell analy! es. Rea- listic test problems are used to evaluate three of the numerical integration procedures as applied in shell of revolution analyses...

Tillerson, Joe Richard

2012-06-07T23:59:59.000Z

223

A review of "Commonwealth Principles: Republican Writing of the English Revolution." by Jonathan Scott,  

E-Print Network [OSTI]

28 SEVENTEENTH-CENTURY NEWS Jonathan Scott. Commonwealth Principles: Republican Writing of the English Revolution. Cambridge and New York: Cambridge University Press, 2004. xii + 402 pp. $75.00. Review by CHARLES W. A. PRIOR, UNIVERSITY OF HULL... in no way disposed to require the definition of En- gland as a polis or the Englishman as a citizen? (334). To a very large extent, Jonathan Scott?s mission is to show how this process of domestication took place, and the result is a thought...

Prior, Charles W. A.

2007-01-01T23:59:59.000Z

224

Sun Yat-sen University in Moscow and the Chinese Revolution: A Personal Account  

E-Print Network [OSTI]

Sun Yat-sen University in Moscow and the Chinese Revolution A Personal Account Yueh Sheng INTERNATIONAL STUDIES, EAST ASIAN SERIES RESEARCH PUBLICATION, NUMBER SEVEN CENTER EOR EAST ASIAN STUDIES THE UNIVERSITY OF KANSAS UNIVERSITY.... $2.50 5. AKASHI, YOJI The Nanyang Chinese National Salvation Movement, 1937-1941. $6.00 6. LEE, CHAE-JIN Communist China's Policy Toward Laos: A Case Study, 1954-67. $5.00 7. SHENG, YUEH Sun Yat-sen University in Moscow and the Chinese...

Sheng, Yueh

1971-01-01T23:59:59.000Z

225

The Cuban revolution of Fidel Castro viewed from abroad; an annotated bibliography  

E-Print Network [OSTI]

was successful. 2 Masetti, Jorge Ricardo Los que luchan y los que lloran; el Fidel Castro que yo vi. Buenos Aires, Editorial Freeland, 1958. 142p. illus. Masetti, an Argentine journalist, visited Cuba in 1958 to learn what was going on in the Sierra Maestra... and imperialism, relations with Latin America, and the future of the Cuban revolution. 81 North, Joseph La revolución cubana: yo vi la victoria del pueblo. New York, The Worker, 196-? 23p. North, a correspondent of The Wor\\er, a labor weekly, presents a short...

Fort, Gilberto V.

1969-01-01T23:59:59.000Z

226

The energy services revolution: New opportunities for commercial and industrial end-users  

SciTech Connect (OSTI)

The changing energy services industry presents significant cost-control opportunities for end-users. However, the transition period from a monopoly to a deregulated market will be chaotic and confusing. For end-users, knowing who to turn to is the first step in taking advantage of the energy services revolution. For energy and energy services providers, bridging the gap between what suppliers perceive as key customer needs and what large energy users actually want will be the key in producing mutually successful ventures.

Hoggard, J.

1997-07-01T23:59:59.000Z

227

Revolution Now  

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

Clean Energy Technologies September 17, 2013 Lead author Dr. Levi Tillemann, Special Advisor for Policy and International Affairs Contributors Fredric Beck, DOE Wind Technology...

228

Revolution Now  

Energy Savers [EERE]

to produce at a lower capacity factor than nuclear generators (average for onshore wind turbines in the US from 2006-2013 was 32%). For more information on capacity factors, see...

229

Revolution Now  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartment of Energy fromComments onReplyofRetiringIndependentRevitalizingof

230

Revolution Now  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0 Resource Program September 2010 B ORevolution Now The Future

231

Revolution Now  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' Research |Regulation Services

232

Risk assessment of turbine rotor failure using probabilistic ultrasonic non-destructive evaluations  

SciTech Connect (OSTI)

The study presents a method and application of risk assessment methodology for turbine rotor fatigue failure using probabilistic ultrasonic nondestructive evaluations. A rigorous probabilistic modeling for ultrasonic flaw sizing is developed by incorporating the model-assisted probability of detection, and the probability density function (PDF) of the actual flaw size is derived. Two general scenarios, namely the ultrasonic inspection with an identified flaw indication and the ultrasonic inspection without flaw indication, are considered in the derivation. To perform estimations for fatigue reliability and remaining useful life, uncertainties from ultrasonic flaw sizing and fatigue model parameters are systematically included and quantified. The model parameter PDF is estimated using Bayesian parameter estimation and actual fatigue testing data. The overall method is demonstrated using a realistic application of steam turbine rotor, and the risk analysis under given safety criteria is provided to support maintenance planning.

Guan, Xuefei; Zhang, Jingdan; Zhou, S. Kevin [Siemens Corporation, Corporate Technology, 755 College Rd. E., Princeton NJ 08540 (United States); Rasselkorde, El Mahjoub; Abbasi, Waheed A. [Siemens Energy Inc., 841 Old Frankstown Road, Pittsburgh PA 15239 (United States)

2014-02-18T23:59:59.000Z

233

Microwave-emitting rotor, separator apparatus including same, methods of operation and design thereof  

DOE Patents [OSTI]

An apparatus for use in separating, at least in part, a mixture, including at least one chamber and at least one microwave generation device configured for communicating microwave energy into the at least one chamber is disclosed. The rotor assembly may comprise an electric generator for generating electricity for operating the microwave generation device. At least one microwave generation device may be positioned within a tubular interior shaft extending within the rotor assembly. At least a portion of the tubular interior shaft may be substantially transparent to microwave energy. Microwave energy may be emitted in an outward radial direction or toward an anticipated boundary surface defined between a mixture and a separated constituent thereof. A method including flowing a mixture through at least one chamber and communicating microwave energy into the at least one chamber while rotating same is disclosed. Methods of operating a centrifugal separator and design thereof are disclosed.

Meikrantz, David H.

2006-12-19T23:59:59.000Z

234

Effect of Cooling Flow on the Operation of a Hot Rotor-Gas Foil Bearing System  

E-Print Network [OSTI]

.2 Drive end GFB: Predicted bearing static parameters ................................. 157 M.3 Free end GFB: Predicted bearing static parameters ................................... 158 1 CHAPTER I INTRODUCTION Micro gas turbine engines (<400... kW) are light-weight compact units operating at extreme temperatures and at high rotor speeds to achieve the desired power with reduced emissions [1]. Employing gas foil bearings (GFBs) in micro gas turbines increases system efficiency...

Ryu, Keun

2012-02-14T23:59:59.000Z

235

A new 2D FEM analysis of a disc machine with offset rotor  

SciTech Connect (OSTI)

The paper presents a new 2-Dimensional Finite Element Method (2D FEM) analysis of a double sided axial field, permanent magnet excited brushless DC motor. The rotor of the machine is free to move in a direction perpendicular to the axis of the shaft. Computed 2D results are compared with 3D FEM analysis and the new analysis method is shown to give close agreement.

Gair, S.; Canova, A. [Napier Univ., Edinburgh (United Kingdom). Dept. of Electrical, Electronic and Computer Engineering; Eastham, J.F.; Betzer, T. [Univ. of Bath (United Kingdom). School of Electronic and Electrical Engineering

1995-12-31T23:59:59.000Z

236

Rotor dynamic analysis of multi-line systems using the polynomial transfer matrix method  

E-Print Network [OSTI]

forces generated by the working fluid of the machine; squeeze film, elastomeric or active feedback dampers; or machine mounting and attachment flexibility. Of course the results of the analysis are only good if the linearization is a valid approximation...ROTOR DYNAMIC ANALYSIS OF MULTI-LINE SYSTEMS USING THE POLYNOMIAL TRANSFER MATRIX METHOD A Thesis by PAUL JOSEPH TROXLER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirement...

Troxler, Paul Joseph

1990-01-01T23:59:59.000Z

237

Advancing our world. It's the Washington Way. The world is in the middle of a materials revolution. Advances in materials have preceded almost  

E-Print Network [OSTI]

Advancing our world. It's the Washington Way. The world is in the middle of a materials revolution of Washington's Materials Science & Engineering department is at the heart of this revolution preparing our students and conducting research to meet the needs of modern technology. MSE Education Preparing students

Anderson, Richard

238

Application of SAFER-PC program to determine turbine rotor boresonic inspection intervals  

SciTech Connect (OSTI)

Public Service Company of Colorado (PSCC) used EPRI`s SAFER-PC Program to evaluate their HP/IP, LP, and generator rotors from Cherokee Station Unit 3, to determine appropriate boresonic re-inspection intervals. The program uses fracture mechanics to calculate critical crack sizes, which could lead to catastrophic failure of the rotors. Conservative stress and fracture mechanics analyses showed negligible fatigue crack growth of assumed bore surface cracks would occur over the proposed inspection interval of eighteen years. The evaluation assumed consistent operational start-up procedures for the inspection interval. If the unit experiences more severe operational procedures, the analysis may not be applicable, with smaller critical crack sizes and accelerated crack growth rates expected. The SAFER-PC analysis resulted in an extension of the previously recommended reinspection interval by eight years. By eliminating just this one inspection, PSCC achieved savings in the range of $100,000. Further savings are anticipated by utilizing the SAFER-PC Program to evaluate these and other PSCC rotors in the future.

Sachse, D.G.; Hellner, R.L.; Dupont, E.J. [Public Service Co., Denver, CO (United States)

1996-12-31T23:59:59.000Z

239

Can quantum fractal fluctuations be observed in an atom-optics kicked rotor experiment?  

E-Print Network [OSTI]

We investigate the parametric fluctuations in the quantum survival probability of an open version of the delta-kicked rotor model in the deep quantum regime. Spectral arguments [Guarneri I and Terraneo M 2001 Phys. Rev. E vol. 65 015203(R)] predict the existence of parametric fractal fluctuations owing to the strong dynamical localisation of the eigenstates of the kicked rotor. We discuss the possibility of observing such dynamically-induced fractality in the quantum survival probability as a function of the kicking period for the atom-optics realisation of the kicked rotor. The influence of the atoms' initial momentum distribution is studied as well as the dependence of the expected fractal dimension on finite-size effects of the experiment, such as finite detection windows and short measurement times. Our results show that clear signatures of fractality could be observed in experiments with cold atoms subjected to periodically flashed optical lattices, which offer an excellent control on interaction times and the initial atomic ensemble.

Andrea Tomadin; Riccardo Mannella; Sandro Wimberger

2005-12-01T23:59:59.000Z

240

Access to affordable and reliable energy has been a cornerstone of the world's increasing prosperity and economic growth since the beginning of the industrial revolution. Our use of energy in the twenty-first century must also be  

E-Print Network [OSTI]

prosperity and economic growth since the beginning of the industrial revolution. Our use of energy to create the foundation for this new industrial revolution. The talk will also discuss policies public. F E A T U R I N G A New Industrial Revolution for a Sustainable Energy Future SCOB 228 · Friday

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

ENGINES OF DISCOVERY: THE 21ST CENTURY REVOLUTION THE LONG RANGE PLAN FOR HIGH PERFORMANCE COMPUTING IN CANADA  

E-Print Network [OSTI]

COMPUTING IN CANADA #12;Engines of Discovery: The 21st Century Revolution The Benefits of the Long Range in Canada - development of a national network of technical support available to all users · Autonomy: local dissemination of techniques and results across Canada · Transparency: appropriate and well-managed injection

Schaeffer, Jonathan

242

Rotor Design for High Pressure Magic Angle Spinning Nuclear Magnetic Resonance  

SciTech Connect (OSTI)

High pressure magic angle spinning (MAS) nuclear magnetic resonance (NMR) with a sample spinning rate exceeding 2.1 kHz and pressure greater than 165 bar has never been realized. In this work, a new sample cell design is reported, suitable for constructing cells of different sizes. Using a 7.5 mm high pressure MAS rotor as an example, internal pressure as high as 200 bar at a sample spinning rate of 6 kHz is achieved. The new high pressure MAS rotor is re-usable and compatible with most commercial NMR set-ups, exhibiting low 1H and 13C NMR background and offering maximal NMR sensitivity. As an example of its many possible applications, this new capability is applied to determine reaction products associated with the carbonation reaction of a natural mineral, antigorite ((Mg,Fe2+)3Si2O5(OH)4), in contact with liquid water in water-saturated supercritical CO2 (scCO2) at 150 bar and 50 deg C. This mineral is relevant to the deep geologic disposal of CO2, but its iron content results in too many sample spinning sidebands at low spinning rate. Hence, this chemical system is a good case study to demonstrate the utility of the higher sample spinning rates that can be achieved by our new rotor design. We expect this new capability will be useful for exploring solid-state, including interfacial, chemistry at new levels of high-pressure in a wide variety of fields.

Turcu, Romulus V.F.; Hoyt, David W.; Rosso, Kevin M.; Sears, Jesse A.; Loring, John S.; Felmy, Andrew R.; Hu, Jian Z.

2013-01-01T23:59:59.000Z

243

Independent modal space control and modal filters for active vibration control of rotors  

E-Print Network [OSTI]

, as shown in equation (3. 7): ((t) = At(t) + Z(t) (3. 7) where Z is the modal force vector, and is given by: Z(t) = V BQ(t) = Vr M 'Q(t) (3 g) in which the right hand side of the equation results from the fact that only the lower n rows of the B matrix... gg Alan B. Pal o (Chair of Committee) James S. Noel (Member) Richard . Alexander (Member) Walter L. B ley (Head of Department) August 1992 ABSTRACT Independent Modal Space Control and Modal Filters for Active Vibration Control of Rotors...

Roever, Douglas Michael

2012-06-07T23:59:59.000Z

244

Notes 05. Dynamics of a simple rotor-fluid film bearing system  

E-Print Network [OSTI]

geometry RPM_max 10000:= MAXIMUM & design speeds Nmax 50:= # of cases for analysis RPM design 7200:= a 0.2 c?:= Amplitude of imbalance on rotor disk Mechanical energy convected by lubricant. ? 0.8:= Thermal model conditions Heat carry over - thermal mixing... coefficient. ? 0.70:= T supply 50K:= Supply Oil Temperature Take deg-K as deg-C Lubricant properties PROPERTIES OF LUBRICANT MOBIL velocite No 10 (ISO VG 22) ? supply 0.0143 Ns? m 2 ?:= Lubricant viscosity at Tsupply in Pa-sec. ? 0.028 1 K ?:= Alpha...

San Andres, Luis

2009-01-01T23:59:59.000Z

245

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

246

Characterizing Inflow Conditions Across the Rotor Disk of a Utility-Scale Wind Turbine (Poster)  

SciTech Connect (OSTI)

Multi-megawatt utility-scale wind turbines operate in a turbulent, thermally-driven atmosphere where wind speed and air temperature vary with height. Turbines convert the wind's momentum into electrical power, and so changes in the atmosphere across the rotor disk influence the power produced by the turbine. To characterize the inflow into utility scale turbines at the National Wind Technology Center (NWTC) near Boulder, Colorado, NREL recently built two 135-meter inflow monitoring towers. This poster introduces the towers and the measurements that are made, showing some of the data obtained in the first few months of operation in 2011.

Clifton, A.; Lundquist, J. K.; Kelley, N.; Scott, G.; Jager, D.; Schreck, S.

2012-01-01T23:59:59.000Z

247

Published by the Centrifuge Instrument Systems Development Center of Beckman Coulter, Inc., Palo Alto, California 94304 SW 28.1 ROTORS  

E-Print Network [OSTI]

Published by the Centrifuge Instrument Systems Development Center of Beckman Coulter, Inc., Palo and understood before operation or maintenance of this equip- ment is attempted. When you see the symbol on other the performance of the rotors. These rotors were developed, manufactured, and tested for safety and reliability

Pawlowski, Wojtek

248

Abstract--This paper proposes a methodology to decide the optimal matching between the size of the rotor of a wind turbine  

E-Print Network [OSTI]

of the rotor of a wind turbine and the rated power of a permanent magnet synchronous machine. This is made of the wind turbine, the gearbox's transformation ratio, the battery voltage and the wind speed probability's rated power and the wind turbine's rotor size. The system studied in this paper consists of 220 (V)/50

Paris-Sud XI, Université de

249

UNIVERSITY of CALIFORNIA INVESTIGATION OF HOW ANGLE OF ATTACK AFFECTS ROTOR SPEED  

E-Print Network [OSTI]

-pitch blades is tested in UCSC's wind tunnel. The turbine is used to test how varying the blade angle affects the turbine's rotational speed at different wind speeds. The data are used to determine how the blade angle 27 Appendix A Wind Turbine Data 29 Appendix B Converting Blade Pitch to Needle Angle 33 Appendix C

Belanger, David P.

250

A model for prediction of the damage and effects of explosive projectiles on helicopter composite material rotor blades  

E-Print Network [OSTI]

. The dame, ge is based on a 23-mm HEI-T projectile impacting a fiberglass rotor blade spar. The extent of damage is developed as a function of impact velocity, obliquity of the shotline, location of the impact point, and the time of fuse functioning... Projectiles on Helicopter Composite Material Rotor Blades. (December 1982) Tilden Newton Nikel, B. S. , Texas AAM University; N . S . , Texas A&N University Chairman of Advisory Committee: Dr. Clarence L. Hough Jr. A number of damage models have been...

Mikel, Tilden Newton

1982-01-01T23:59:59.000Z

251

Land and Revolution in Iran, 1960-1980. By Eric J. Hooglund. Austin: University of Texas Press, 1982. Pp. xvii+191. Notes, bibliography, and index. $19.95  

E-Print Network [OSTI]

S 1960-1980. By Eric in Iran, J. Hooglund. Austin: 1982. Pp.Hooglund's Land and Revolution Iran, in valuable addition toobjective economic, and Iran (1960), and a few articles in

Moshiri, Farrokh

1984-01-01T23:59:59.000Z

252

Mass Transfer Testing of a 12.5-cm Rotor Centrifugal Contactor  

SciTech Connect (OSTI)

TRUEX mass transfer tests were performed using a single stage commercially available 12.5 cm centrifugal contactor and stable cerium (Ce) and europium (Eu). Test conditions included throughputs ranging from 2.5 to 15 Lpm and rotor speeds of 1750 and 2250 rpm. Ce and Eu extraction forward distribution coefficients ranged from 13 to 19. The first and second stage strip back distributions were 0.5 to 1.4 and .002 to .004, respectively, throughout the dynamic test conditions studied. Visual carryover of aqueous entrainment in all organic phase samples was estimated at < 0.1 % and organic carryover into all aqueous phase samples was about ten times less. Mass transfer efficiencies of = 98 % for both Ce and Eu in the extraction section were obtained over the entire range of test conditions. The first strip stage mass transfer efficiencies ranged from 75 to 93% trending higher with increasing throughput. Second stage mass transfer was greater than 99% in all cases. Increasing the rotor speed from 1750 to 2250 rpm had no significant effect on efficiency for all throughputs tested.

D. H. Meikrantz; T. G. Garn; J. D. Law; N. R. Mann; T. A. Todd

2008-09-01T23:59:59.000Z

253

Measured and predicted rotor performance for the SERI advanced wind turbine blades  

SciTech Connect (OSTI)

Measured and predicted rotor performance for the SERI advanced wind turbine blades were compared to assess the accuracy of predictions and to identify the sources of error affecting both predictions and measurements. An awareness of these sources of error contributes to improved prediction and measurement methods that will ultimately benefit future rotor design efforts. Propeller/vane anemometers were found to underestimate the wind speed in turbulent environments such as the San Gorgonio Pass wind farm area. Using sonic or cup anemometers, good agreement was achieved between predicted and measured power output for wind speeds up to 8 m/sec. At higher wind speeds an optimistic predicted power output and the occurrence of peak power at wind speeds lower than measurements resulted from the omission of turbulence and yaw error. In addition, accurate two-dimensional (2-D) airfoil data prior to stall and a post stall airfoil data synthesization method that reflects three-dimensional (3-D) effects were found to be essential for accurate performance prediction. 11 refs.

Tangler, J.; Smith, B.; Kelley, N.; Jager, D.

1992-02-01T23:59:59.000Z

254

User's Guide for the NREL Teetering Rotor Analysis Program (STRAP). [National Renewable Energy Laboratory (NREL)  

SciTech Connect (OSTI)

The following report gives the reader an overview of instructions on the proper use of the National Renewable Energy Laboratory (formerly the Solar Energy Research Institute, or SERI) teetering Rotor Analysis Program (STRAP version 2.20). STRAP is a derivative of the Force and Loads Analysis program (FLAP). It is intended as a tool for prediction of rotor and blade loads and response for only two-bladed teetering hub wind turbines. The effects of delta-3, undersling, hub mass, and wind turbulence are accounted for. The objectives of the report are to give an overview of the code and also show the methods of data input and correct code execution steps in order to model an example two-bladed teetering hub turbine. A large portion of the discussion (Sections 6.0, 7.0, and 8.0) is devoted to the subject of inputting and running the code for wind turbulence effects. The ability to include turbulent wind effects is perhaps the biggest change in the code since the release of FLAP version 2.01 in 1988. This report is intended to be a user's guide. It does not contain a theoretical discussion on equations of motion, assumptions, underlying theory, etc. It is intended to be used in conjunction with Wright, Buhl, and Thresher (1988).

Wright, A.D.

1992-08-01T23:59:59.000Z

255

User`s Guide for the NREL Teetering Rotor Analysis Program (STRAP)  

SciTech Connect (OSTI)

The following report gives the reader an overview of instructions on the proper use of the National Renewable Energy Laboratory (formerly the Solar Energy Research Institute, or SERI) teetering Rotor Analysis Program (STRAP version 2.20). STRAP is a derivative of the Force and Loads Analysis program (FLAP). It is intended as a tool for prediction of rotor and blade loads and response for only two-bladed teetering hub wind turbines. The effects of delta-3, undersling, hub mass, and wind turbulence are accounted for. The objectives of the report are to give an overview of the code and also show the methods of data input and correct code execution steps in order to model an example two-bladed teetering hub turbine. A large portion of the discussion (Sections 6.0, 7.0, and 8.0) is devoted to the subject of inputting and running the code for wind turbulence effects. The ability to include turbulent wind effects is perhaps the biggest change in the code since the release of FLAP version 2.01 in 1988. This report is intended to be a user`s guide. It does not contain a theoretical discussion on equations of motion, assumptions, underlying theory, etc. It is intended to be used in conjunction with Wright, Buhl, and Thresher (1988).

Wright, A.D.

1992-08-01T23:59:59.000Z

256

Workers of the World, Unite! Franchise Extensions and the Threat of Revolution in Europe, 1820-1938  

E-Print Network [OSTI]

of democratization, such as national income, urbanization, education, war, trade integration, inequality, enlightenment shocks, etc. and for un- observed country speci?c ?xed factors and common time shocks. Yet, it is possible that countries which were ?ready... - tions (voting rights to all adults, secret ballot, civil liberties, e¤ective accountability, etc.). On the contrary, it suggests that the elites would seek to grant the minimum concession needed to ?calm the waters?and avoid a revolution. Accordingly...

Aidt, Toke S.; Jensen, Peter S.

2014-01-01T23:59:59.000Z

257

A review of "The English Radical Imagination: Culture, Religion, and Revolution, 1630-1660" by Nicholas McDowell.  

E-Print Network [OSTI]

REVIEWS 253 Nicholas McDowell. The English Radical Imagination: Culture, Religion, and Revolution, 1630?1660. Oxford: Clarendon Press, 2003. x +219 pp. $72.00. Review by JASON PEACEY, HISTORY OF PARLIAMENT TRUST, LONDON. The ?radicals... the likes of Christopher Hill by the revisionists of the 1970s and 1980s. Historians, he argues, are still seeking to respond to this assault with weapons of its own creation, namely archival sources rather than printed pamphlets. McDowell arguably un...

Jason Peacey

2004-01-01T23:59:59.000Z

258

Research-Technology Management November--December 2013 | 1 Before the Industrial Revolution, goods were produced by  

E-Print Network [OSTI]

to the manufacturing sector as the Industrial Revolution was--the age of 3D printing and the digital tools that support-build-deliver model with the emerging 3D printing model: Ask a factory today to make you a single hammer to your own-scale production with an economies-of-one production model enabled by 3D printing and additive manufactur- ing

259

An "adiabatic-hindered-rotor" treatment allows para-H2 to be treated as if it were spherical  

E-Print Network [OSTI]

An "adiabatic-hindered-rotor" treatment allows para-H2 to be treated as if it were spherical Hui Li­ molecule interactions, the common assumption that para-H2 may be treated as a spherical particle is often K , it is often considered a good approximation to treat para-H2 as a spherical particle.1

Le Roy, Robert J.

260

Wind turbine rotor blade with in-plane sweep and devices using same, and methods for making same  

DOE Patents [OSTI]

A wind turbine includes a rotor having a hub and at least one blade having a torsionally rigid root, an inboard section, and an outboard section. The inboard section has a forward sweep relative to an elastic axis of the blade and the outboard section has an aft sweep.

Wetzel, Kyle Kristopher (Lawrence, KS)

2008-03-18T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Wind turbine rotor blade with in-plane sweep and devices using the same, and methods for making the same  

DOE Patents [OSTI]

A wind turbine includes a rotor having a hub and at least one blade having a torsionally rigid root, an inboard section, and an outboard section. The inboard section has a forward sweep relative to an elastic axis of the blade and the outboard section has an aft sweep.

Wetzel, Kyle Kristopher

2014-06-24T23:59:59.000Z

262

Eliciting a human understandable model of ice adhesion strength for rotor blade leading edge materials from uncertain experimental data  

E-Print Network [OSTI]

Eliciting a human understandable model of ice adhesion strength for rotor blade leading edge: Genetic Fuzzy Systems Fuzzy rule-based classifiers Vague data Isotropic materials Ice-phobic materials Shear adhesion strength a b s t r a c t The published ice adhesion performance data of novel ``ice

Granada, Universidad de

263

Quantum and Classical Superballistic Transport in a Relativistic Kicked-Rotor System  

E-Print Network [OSTI]

As an unusual type of anomalous diffusion behavior, superballistic transport is not well known but has been experimentally simulated recently. Quantum superballistic transport models to date are mainly based on connected sublattices which are constructed to have different properties. In this work, we show that both quantum and classical superballistic transport in the momentum space can occur in a simple periodically driven Hamiltonian system, namely, a relativistic kicked-rotor system with a nonzero mass term. The nonzero mass term essentially realizes a junction-like scenario: regimes with low or high momentum values have different dispersion relations and hence different transport properties. It is further shown that the quantum and classical superballistic transport should occur under much different choices of the system parameters. The results are of interest to studies of anomalous transport, quantum and classical chaos, and the issue of quantum-classical correspondence.

Qifang Zhao; Cord A. Muller; Jiangbin Gong

2014-05-27T23:59:59.000Z

264

Indirect rotor position sensing in real time for brushless permanent magnet motor drives  

SciTech Connect (OSTI)

This paper describes a modern solution to real-time rotor position estimation of brushless permanent magnet (PM) motor drives. The position estimation scheme, based on flux linkage and line-current estimation, is implemented in real time by using the abc reference frame, and it is tested dynamically. The position estimation model of the test motor, development of hardware, and basic operation of the digital signal processor (DSP) are discussed. The overall position estimation strategy is accomplished with a fast DSP (TMS320C30). The method is a shaft position sensorless method that is applicable to a wide range of excitation types in brushless PM motors without any restriction on the motor model and the current excitation. Both rectangular and sinewave-excited brushless PM motor drives are examined, and the results are given to demonstrate the effectiveness of the method with dynamic loads in closed estimated position loop.

Ertugrul, N. [Univ. of Adelaide (Australia). Dept. of Electrical and Electronic Engineering] [Univ. of Adelaide (Australia). Dept. of Electrical and Electronic Engineering; Acarnley, P.P. [Univ. of Newcastle upon Tyne (United Kingdom). Dept. of Electrical and Electronic Engineering] [Univ. of Newcastle upon Tyne (United Kingdom). Dept. of Electrical and Electronic Engineering

1998-07-01T23:59:59.000Z

265

Workers of the World, Unite! Franchise Extensions and the Threat of Revolution in Europe, 1820-1938  

E-Print Network [OSTI]

of the threat level is therefore unlikely to be correlated with other (observed and unobserved) determinants of su¤rage reform ?such as political rivalry between factions within the national elites or general enlightenment trends ?originating within that country... are also unrelated to the threat of revolution. However, we are able to control for each of these in the estimations and so, they are less likely to show up in the error term. 22Although it is possible that some domestic political factions would have...

Aidt, Toke S.

2011-01-26T23:59:59.000Z

266

A review of "European Weapons and Armour From the Renaissance to the Industrial Revolution" by Ewart Oakeshott  

E-Print Network [OSTI]

arrangements of subject matter. Ewart Oakeshott. European Weapons and Armour From the Renaissance to the Industrial Revolution. Rochester, NY: #14;e Boydell Press, 2012. Xviii + 288 pp. + c. illus. $28.45. Review by #31;#8;#18;#28;#25;#8; #7;. #19...;#23;#25;#6;#24;#30;, #7;#24;#29;#20;#6;#24;#7;#31;#25;#26; #17;#24;#30;#30;#31;#6;#31;-#25;#24;#17;#11;#27;#22;#30;#30;#31;, #7;#8;. Oakeshott has written an engaging book of great use to scholars and students of the sixteenth and seventeenth centuries. #14;e book...

Furgol, Edward M.

2013-01-01T23:59:59.000Z

267

Agricultural green revolution as a driver of increasing atmospheric CO2 seasonal amplitude  

SciTech Connect (OSTI)

The atmospheric carbon dioxide (CO2) record displays a prominent seasonal cycle that arises mainly from changes in vegetation growth and the corresponding CO2 uptake during the boreal spring and summer growing seasons and CO2 release during the autumn and winter seasons. The CO2 seasonal amplitude has increased over the past five decades, suggesting an increase in Northern Hemisphere biospheric activity. It has been proposed that vegetation growth may have been stimulated by higher concentrations of CO2 as well as by warming in recent decades, but such mechanisms have been unable to explain the full range and magnitude of the observed increase in CO2 seasonal amplitude. Here we suggest that the intensification of agriculture (the Green Revolution, in which much greater crop yield per unit area was achieved by hybridization, irrigation and fertilization) during the past five decades is a driver of changes in the seasonal characteristics of the global carbon cycle. Our analysis of CO2 data and atmospheric inversions shows a robust 15 per cent long-term increase in CO2 seasonal amplitude from 1961 to 2010, punctuated by large decadal and interannual variations. Using a terrestrial carbon cycle model that takes into account high-yield cultivars, fertilizer use and irrigation, we find that the long-term increase in CO2 seasonal amplitude arises from two major regions: the mid-latitude cropland between 256N and 606N and the high-latitude natural vegetation between 506N and 706 N. The long-term trend of seasonal amplitude increase is 0.311 ± 0.027 percent per year, of which sensitivity experiments attribute 45, 29 and 26 per cent to land-use change, climate variability and change, and increased productivity due to CO2 fertilization, respectively. Vegetation growth was earlier by one to two weeks, as measured by the mid-point of vegetation carbon uptake, and took up 0.5 petagrams more carbon in July, the height of the growing season, during 2001–2010 than in 1961–1970, suggesting that human land use and management contribute to seasonal changes in the CO2 exchange between the biosphere and the atmosphere.

Zeng, Ning; Zhao, Fang; Collatz, George; Kalnay, Eugenia; Salawitch, Ross J.; West, Tristram O.; Guanter, Luis

2014-11-20T23:59:59.000Z

268

Rotor reference frame models of a multiloop 2-phase motor drive in brushless DC and microstepping modes  

SciTech Connect (OSTI)

This paper describes non-linear models of a 2-phase permanent magnet synchronous motor drive in brushless DC and microstepping modes. The models account for everything from the main power bus up to and including the mechanical load and velocity feedback loop. In particular, the models include the power electronics for each phase complete with their internal feedback loops. Classical state space averaged power electronics models are transformed to the rotor reference frame along with the usual electromechanical variables. Since SPICE linearizes the rotor reference frame model about shaft velocity, instead of shaft angle, frequency domain methods apply. The frequency domain analysis detects unstable interactions between torque angle and deliberate feedback within the drives. Time domain simulations using stator reference frame models confirm the results. All models are SPICE-compatible but were developed on Cadence`s Analog Workbench.

Chen, J.E. [Lockheed Missiles and Space Co. Inc., Sunnyvale, CA (United States)

1995-12-31T23:59:59.000Z

269

Atmospheric Pb deposition since the Industrial Revolution recorded by five Swiss peat profiles: Enrichment factors, fluxes, isotopic composition, and sources  

SciTech Connect (OSTI)

Atmospheric Pb deposition since the Industrial Revolution was studied in western, central, and southern Switzerland using five rural peat bogs. Similar temporal patterns were found in western and central Switzerland, with two distinct periods of Pb enrichment relative to the natural background: between 1880 and 1920 with enrichments ranging from 40 to 80 times, and between 1960 and 1980 with enrichments ranging from 80 to 100 times. The fluxes also were generally elevated in those time periods: in western Switzerland between 1.16 and 1.55 {micro}g cm{sup {minus}2} y{sup {minus}1} during the second period. Between the Industrial Revolution and 1985, nonradiogenic Pb became increasingly important in all five cores because of the replacement of coal by oil after ca. 1920, the use of Australian Pb in industry, and the extensive combustion of leaded gasoline after 1950. The introduction of unleaded gasoline in 1985 had a pronounced effect on the Pb deposition in all five cores. Enrichments dropped sharply, and the isotopic ratios reverted back toward natural values. The cores from western and central Switzerland showed very similar isotopic trends throughout the time period studied, implying that these sites were influenced contemporaneously by similar pollution sources and atmospheric pathways. Southern Switzerland revealed a different record with respect to the Pb pollution: it was dominated by a single massive Pb enrichment dated between 1930 and 1950.

Weiss, D.; Shotyk, W.; Kramers, J.D. [Univ. of Bern (Switzerland)] [Univ. of Bern (Switzerland); Appleby, P.G. [Univ. of Liverpool (United Kingdom). Dept. of Mathematical Sciences] [Univ. of Liverpool (United Kingdom). Dept. of Mathematical Sciences; Cheburkin, A.K. [Ukrainian Academy of Sciences, Kiev (Ukraine). Inst. of Geological Sciences] [Ukrainian Academy of Sciences, Kiev (Ukraine). Inst. of Geological Sciences

1999-05-01T23:59:59.000Z

270

Sulphur and nitrogen fluxes and budgets in the Bohemian Forest andTatra Mountains during the Industrial Revolution Hydrology and Earth System Sciences, 5(3), 391405 (2001) EGS  

E-Print Network [OSTI]

the Industrial Revolution 391 Hydrology and Earth System Sciences, 5(3), 391­405 (2001) © EGS Sulphur and nitrogen fluxes and budgets in the Bohemian Forest and Tatra Mountains during the Industrial Revolution of the Bohemian Forest (forest lakes) and Tatra Mountains (alpine lakes) over the industrial period. Sulphur

Paris-Sud XI, Université de

271

Evaluation of Manufacturability of Embedded Sensors and Controls with Canned Rotor Pump System  

SciTech Connect (OSTI)

This report documents the current status of fabrication and assembly planning for the magnetic bearing, canned rotor pump being used as a demonstration platform for deeply integrating I&C into nuclear power plant components. The report identifies material choices and fabrication sequences for all of the required parts and the issues that need to be either resolved or accommodated during the manufacturing process. Down selection between material options has not yet been performed. Potential suppliers for all of the necessary materials have also been identified. The assembly evaluation begins by logically subdividing the pump into modules, which are themselves decomposed into individual parts. Potential materials and fabrication processes for each part in turn are then evaluated. The evaluation process includes assessment of the environmental compatibility requirements and the tolerances available for the selected fabrication processes. A description of the pump power/control electronics is also provided. The report also includes exploded views of the modules that show the integration of the various parts into modules that are then assembled to form the pump. Emphasis has been placed on thermal environment compatibility and the part dimensional changes during heat-up. No insurmountable fabrication or assembly challenges have been identified.

Kisner, Roger A [ORNL; Fugate, David L [ORNL; Melin, Alexander M [ORNL; Holcomb, David Eugene [ORNL; Wilson, Dane F [ORNL; Silva, Pamela C [ORNL; Cruz Molina, Carola [ORNL

2013-07-01T23:59:59.000Z

272

Prediction of stochastic blade loads for three-bladed, rigid-hub rotors  

SciTech Connect (OSTI)

Accurately predicting wind turbine blade loads and response is important for the design of future wind turbines. The need to include turbulent wind inputs in structural dynamics models is widely recognized. In this paper, the Force and Loads Analysis Program (FLAP) code will be used to predict turbulence-induced bending moments for the SERI Combined Experiment rotor blade and the Howden 330-kW blade. FLAP code predictions will be compared to the power spectra of measured blade-bending moments. Two methods will be used to generate turbulent wind inputs to FLAP: a theoretical simulation: the Pacific Northwest Laboratories (PNL) simulation theory; and measured wind-speed data taken from an array of anemometers upwind of the turbine. Turbulent wind-speed time series are input to FLAP for both methods outlined above. Power spectra of predicted flap-bending moments are compared to measured results for different wind conditions. Conclusions are also drawn as to the ability of the turbulence simulation models to provide accurate wind input to FLAP and to FLAP's ability to accurately simulate blade response to turbulence. Finally, suggestions are made as to needed improvements in the theoretical model. 11 refs., 8 figs.

Wright, A.D.; Weber, T.L.; Thresher, R.W.; Butterfield, C.P.

1989-11-01T23:59:59.000Z

273

ABSTRACT Project Camelot, a military-sponsored, social science study of revolution, was cancelled in 1965 amidst international and national discussion about the study's  

E-Print Network [OSTI]

ABSTRACT Project Camelot, a military-sponsored, social science study of revolution, was cancelled be ignored is. Camelot, a proposed international social science research project sponsored by the Army dollars would have made it the largest social science project in US history, but international complaints

Solovey, Mark

274

February 9, 2012 Consider the non-spherical wrist of the Comau Smart5 NJ4 170 robot, i.e., the last three revolute  

E-Print Network [OSTI]

((t)) a linear Cartesian path with constant speed = 1. The robot is initially in the configuration q(0) = /3 /2Robotics I February 9, 2012 Exercise 1 Consider the non-spherical wrist of the Comau Smart5 NJ4 170 robot, i.e., the last three revolute joints of this 6R structure (see Fig. 1). The associated Denavit

De Luca, Alessandro

275

202-328-5000 www.rff.orgSector Effects of the Shale Gas Revolution in the United States  

E-Print Network [OSTI]

This paper reviews the impact of the shale gas revolution on the sectors of electricity generation, transportation, and manufacturing in the United States. Natural gas is being substituted for other fuels, particularly coal, in electricity generation, resulting in lower greenhouse gas emissions from this sector. The use of natural gas in the transportation sector is currently negligible but is projected to increase with investments in refueling infrastructure and natural gas vehicle technologies. Petrochemical and other manufacturing industries have responded to lower natural gas prices by investing in domestically located manufacturing projects. This paper also speculates on the impact of a possible shale gas boom in China. Key Words: shale gas, electricity, transportation, and manufacturing JEL Classification Numbers: L71, L9, Q4 © 2013 Resources for the Future. All rights reserved. No portion of this paper may be reproduced without permission of the authors. Discussion papers are research materials circulated by their authors for purposes of information and discussion.

276

How Much Degrees Of Temperature A Warp Drive Achieves When At Superluminal Speeds?? The Analysis Of Gonzalez-Diaz Applied To The  

E-Print Network [OSTI]

How Much Degrees Of Temperature A Warp Drive Achieves When At Superluminal Speeds?? The Analysis Of Gonzalez-Diaz Applied To The Natario Warp Drive Spacetime. Fernando Loup Residencia de Estudantes Universitas Lisboa Portugal February 24, 2013 Abstract Warp Drives are solutions of the Einstein Field

Boyer, Edmond

277

Apparatus and methods for aligning holes through wheels and spacers and stacking the wheels and spacers to form a turbine rotor  

DOE Patents [OSTI]

A gas turbine rotor stacking fixture includes upstanding bolts for reception in aligned bolt holes in superposed aft disk, wheels and spacers and upstanding alignment rods received in openings of the disk, wheels and spacers during the rotor stacking assembly. The axially registering openings enable insertion of thin-walled tubes circumferentially about the rim of the rotor, with tight tolerances to the openings to provide supply and return steam for cooling buckets. The alignment rods have radial dimensions substantially less than their dimensions in a circumferential direction to allow for radial opening misalignment due to thermal expansion, tolerance stack-up and wheel-to-spacer mismatch due to rabbet mechanical growth. The circumferential dimension of the alignment rods affords tightly toleranced alignment of the openings through which the cooling tubes are installed.

Berry, Robert Randolph (Greenville, SC); Palmer, Gene David (Clifton Park, NY); Wilson, Ian David (Clifton Park, NY)

2000-01-01T23:59:59.000Z

278

A review of "The Disciplinary Revolution: Calvinism and the Rise of the State in Early Modern Europe." by Philip S. Gorski  

E-Print Network [OSTI]

not fit these models and should be treated and researched differently. Gorski sets out to explore and analyze the role of the Protestant religion in the forming of modern states. More precisely, he takes into account Calvinism and argues... to take a closer look at the disciplinary revolution, which he sees as an important factor of state formation in Protestant countries. In particular the book stresses the strong links between social discipline, state power, and confessionalization...

Jakub Basista

2006-01-01T23:59:59.000Z

279

A review of "The Nature of English Revolution Revisited: Essays in Honour of John Morrill" edited by Stephen Taylor and Grant Tapsell  

E-Print Network [OSTI]

in the distant past was overthrown, to overcome challenges while developing opportunities within a post-war England. Stephen Taylor and Grant Tapsell, eds. The Nature of English Revolution Revisited: Essays in Honour of John Morrill. Woodbridge, Suffolk, UK... and finds that there was no effort to replicate the state of affairs under Charles I when the English church sought more influence and control over its British counterparts. Finally, an article by Kenneth Fincham and Stephen Taylor offers a very...

Schwarz, Marc

2014-01-01T23:59:59.000Z

280

Real-time Stereo Visual Servoing Control of an UAV having Eight-Rotors Sergio Salazar, Hugo Romero, Jose Gomez and Rogelio Lozano  

E-Print Network [OSTI]

Real-time Stereo Visual Servoing Control of an UAV having Eight-Rotors Sergio Salazar, Hugo Romero UAV using image-based visual servoing with stereo vision. In order to control the orientation vision system we are able to estimate the UAV 3D position, while from the inertial sensors we can obtain

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Turbine blade platform film cooling with simulated stator-rotor purge flow with varied seal width and upstream wake with vortex  

E-Print Network [OSTI]

. The coolant was injected through an advanced labyrinth seal to simulate purge flow through a stator-rotor seal. The width of the opening of this seal was varied to simulate the effect of misalignment. Stationary rods were placed upstream of the cascade in four...

Blake, Sarah Anne

2009-05-15T23:59:59.000Z

282

Analyse numrique qualitative d'interactions rotor/stator dans un compresseur haute pression d'un moteur d'hlicoptre  

E-Print Network [OSTI]

are carried out on the centrifugal compressor of a modern heli- copter engine, for which it is assumed méthodologie systématique d'analyse. Les simulations d'interaction sont réalisées sur un compresseur centrifuge-harmoniques du chargement imposé. A qualitative numerical analysis of rotor-casing interactions in centrifugal

Paris-Sud XI, Université de

283

Preliminary Structural Design Conceptualization for Composite Rotor for Verdant Power Water Current: Cooperative Research and Development Final Report, CRADA Number CRD-08-296  

SciTech Connect (OSTI)

The primary thrust of the CRADA will be to develop a new rotor design that will allow higher current flows (>4m/s), greater swept area (6-11m), and in the process, will maximize performance and energy capture.

Hughes, S.

2011-02-01T23:59:59.000Z

284

Backward Precessional Whip and Whirl for a Two Point Rubbing Contact Model of a Rigid Rotor Supported by an Elastically Supported Rigid Stator  

E-Print Network [OSTI]

of rotor motion [L] csL, crL Damping constants [F t/L] CrL,CrR Clearance at rub surface [L] Dw W11W22-W 2 as introduce in Eq.(27) frLX, frRX, frLY frRY Reaction forces on the rotor at 2 contacts in the 2 planes [F] fL fR Reaction forces... components at the contact points are cos sin , sin cos cos sin , sin cos rLX L fL rLY L fL rRX R fR rRY R fR f N f f N f f N f f N f ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (14) For this result, (cos sin ) (cos sin ) ( ) ( ) L...

Kumar, Dhruv Dileep

2011-10-21T23:59:59.000Z

285

Synchronous motor with soft start element formed between the motor rotor and motor output shaft to successfully synchronize loads that have high inertia and/or high torque  

DOE Patents [OSTI]

A line-start synchronous motor has a housing, a rotor shaft, and an output shaft. A soft-start coupling portion is operatively coupled to the output shaft and the rotor shaft. The soft-start coupling portion is configurable to enable the synchronous motor to obtain synchronous operation and to drive, at least near synchronous speed during normal steady state operation of the motor, a load having characteristics sufficient to prevent obtaining normal synchronous operation of the motor when the motor is operatively connected to the load in the absence of the soft-start coupling. The synchronous motor is sufficiently rated to obtain synchronous operation and to drive, at least near synchronous speed during normal steady state operation of the motor, a load having characteristics sufficient to prevent obtaining normal synchronous operation of the motor when the motor is operatively connected to the load in the absence of the soft-start coupling.

Umans, Stephen D; Nisley, Donald L; Melfi, Michael J

2014-10-28T23:59:59.000Z

286

Reliability of steam-turbine rotors. Task 1. Lifetime prediction analysis system. Final report. [Using STRAP and SAFER computer codes and boresonic data  

SciTech Connect (OSTI)

Task 1 of RP 502, Reliability of Steam Turbine Rotors, resulted in the development of a computerized lifetime prediction analysis system (STRAP) for the automatic evaluation of rotor integrity based upon the results of a boresonic examination of near-bore defects. Concurrently an advanced boresonic examination system (TREES), designed to acquire data automatically for lifetime analysis, was developed and delivered to the maintenance shop of a major utility. This system and a semi-automated, state-of-the-art system (BUCS) were evaluated on two retired rotors as part of the Task 2 effort. A modified nonproprietary version of STRAP, called SAFER, is now available for rotor lifetime prediction analysis. STRAP and SAFER share a common fracture analysis postprocessor for rapid evaluation of either conventional boresonic amplitude data or TREES cell data. The final version of this postprocessor contains general stress intensity correlations for elliptical cracks in a radial stress gradient and provision for elastic-plastic instability of the ligament between an imbedded crack and the bore surface. Both linear elastic and ligament rupture models were developed for rapid analysis of linkup within three-dimensional clusters of defects. Bore stress-rupture criteria are included, but a creep-fatigue crack growth data base is not available. Physical and mechanical properties of air-melt 1CrMoV forgings are built into the program; however, only bounding values of fracture toughness versus temperature are available. Owing to the lack of data regarding the probability of flaw detection for the boresonic systems and of quantitative verification of the flaw linkup analysis, automatic evlauation of boresonic results is not recommended, and the lifetime prediction system is currently restricted to conservative, deterministic analysis of specified flaw geometries.

Nair, P.K.; Pennick, H.G.; Peters, J.E.; Wells, C.H.

1982-12-01T23:59:59.000Z

287

Manufacturing and properties of newly developed 9%CrMoVNiNbN high-pressure low-pressure rotor shaft forging  

SciTech Connect (OSTI)

In order to obtain the improved strength and toughness for high-pressure low-pressure rotor shaft forging, fundamental studies using laboratory heats were performed on the 9CrMoV base materials, and effects of chemistry on toughness and creep rupture strength were investigated. From the investigation, it is showed that the superclean 9CrMoVNiNbN steel with reduced Si and Mn contents and Ni addition provides a superior strength versus toughness balance. Based on these fundamental studies, a trial high-pressure low-pressure rotor shaft forging with diameter of low-pressure section of 1,750 mm and diameter of high-pressure section of 1,200 mm was successfully manufactured from the diameter of 1,800 mm, and the weight of 65 ton ESR ingot. From the evaluation test results of this trial rotor forging, homogeneous distribution of chemistry was confirmed and low impurity contents was observed in the whole forging. The superior strength and toughness were confirmed with good creep rupture strength. The FATT at the center of low-pressure section was {minus}3 C with the tensile strength level of 870 MPa. From the results of fracture toughness test, low cycle fatigue test, and isothermal aging test, superior mechanical properties were demonstrated. Thus, the superclean 9CrMoVNiNbN steel with reduced Si and Mn contents and Ni addition, is particularly suitable for the high-pressure low-pressure rotor material for advanced combined cycle power plants.

Azuma, Tsukasa; Tanaka, Yasuhiko; Ishiguro, Tohru; Yoshida, Hajime; Ikeda, Yasumi [Japan Steel Works, Muroran (Japan)

1997-12-31T23:59:59.000Z

288

Revolution Coffees Classic Coffees  

E-Print Network [OSTI]

high in antioxidants Fruit And Herbal Infusions Small Regular Large Chai Tea ÂŁ1.65 ÂŁ1.85 ÂŁ2.20 A spiced.85 Big Leaf Peppermint Served by the pot ÂŁ1.85 Selection of herbal and fruit infusions Served by the cup

Oakley, Jeremy

289

The refrigerator revolution  

SciTech Connect (OSTI)

This article discusses how a simple, new technology threw the best-laid plans of the chemical and refrigerator industries into disarray-and provided a new perspective on how future environmental agreements can be reached. In recent years, a series of massive business mergers has mesmerized the industrial world. However in the early 1990s a German environmentalist, triggered global reprocussions in the wake of the mandate to phase out the use of ozone depleting substances. The economic and political background of this is explained in detail.

Ayres, E.; French, H.

1996-09-01T23:59:59.000Z

290

Ethiopia: An Heretical Revolution?  

E-Print Network [OSTI]

controdictioJ'ls t hat Ethiopia '" tl"aditUmal " oci e ty1s sai d , hoeever , l efort's Ethiopia sti ll s tands as an

Alpers, Edward E.

1984-01-01T23:59:59.000Z

291

The Quantum Information Revolution  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2 andThe MolecularPlace Wherein Rural America byThe

292

Modeling Creep-Fatigue-Environment Interactions in Steam Turbine Rotor Materials for Advanced Ultra-supercritical Coal Power Plants  

SciTech Connect (OSTI)

The goal of this project is to model creep-fatigue-environment interactions in steam turbine rotor materials for advanced ultra-supercritical (A-USC) coal power Alloy 282 plants, to develop and demonstrate computational algorithms for alloy property predictions, and to determine and model key mechanisms that contribute to the damages caused by creep-fatigue-environment interactions. The nickel based Alloy 282 is selected for this project because it is one of the leading candidate materials for the high temperature/pressure section of an A-USC steam turbine. The methods developed in the project are expected to be applicable to other metal alloys in similar steam/oxidation environments. The major developments are: ? failure mechanism and microstructural characterization ? atomistic and first principles modeling of crack tip oxygen embrittlement ? modeling of gamma prime microstructures and mesoscale microstructure-defect interactions ? microstructure and damage-based creep prediction ? multi-scale crack growth modeling considering oxidation, viscoplasticity and fatigue The technology developed in this project is expected to enable more accurate prediction of long service life of advanced alloys for A-USC power plants, and provide faster and more effective materials design, development, and implementation than current state-of-the-art computational and experimental methods. This document is a final technical report for the project, covering efforts conducted from January 2011 to January 2014.

Shen, Chen

2014-01-20T23:59:59.000Z

293

Impacts of oil disturbances: lessons from experience. [1973-1974 Oil Crisis; 1978-1979 Iranian Revolution; 1980-1981 Iran-Iraq War  

SciTech Connect (OSTI)

An analysis of the impacts of previous oil distrubances can be used to suggest the impacts of future oil disturbances. This paper reviews how the 1973-1974 Oil Crisis, the 1978-1979 Iranian Revolution, and the 1980-1981 Iran-Iraq War impacted the US and world oil markets. Various measures of impacts are considered, such as impacts on physical flows of crude and products, crude and product price changes on the US and world markets, impacts on stocks of crude and products, and impacts on refiners' inputs and outputs. Various macroeconomic indicators, such as gross national product, inflation rates, and unemployment, are also considered. Of particular interest in this study are the impacts that oil disturbances have had (and could have) on the availabilities of particular crude types and the abilities of US refiners to process crudes of various types in the short run. In addition, this paper reviews how the actions of the consuming countries and the major oil companies affected the impacts of past disturbances. The paper briefly discusses the likely causes and impacts of future oil distrubances and summarizes the lessons to be learned from past reactions to oil disturbances.

Curlee, T R

1983-01-01T23:59:59.000Z

294

The GIS Revolution in Transportation  

E-Print Network [OSTI]

Analysis (http://cta.ornl.gov/cta/) at Oak Ridge National Laboratory. This is a group of 34 researchers and support contractors that focus on freight, energy, safety, supply chain, defense, and security studies and systems development for air, rail, water...

Harrison, Glen

2006-11-15T23:59:59.000Z

295

Riddell Revolution Speed Adult Large  

E-Print Network [OSTI]

Available: Adult Football Helmet Detailed Ratings May 2012 Riddell 360 Sample 1 2 3 Size Adult Large Adult.237 0.239 Overall STAR 0.239 Best Available: A total of 15 adult football helmet models that have been values. Helmet Ratings #12;Adult Football Helmet Detailed Ratings May 2012 Schutt ION 4D Sample 1 2 3

Lu, Chang

296

Revolution Now | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar HomePromisingStories »Submitter ResourcesReviews and Validations

297

The Digital Revolution in Measurements  

SciTech Connect (OSTI)

This paper considers what it means to make a measurement, and the changes in measurement technology over the years. The impact of the latest changes, which have resulted in most electrical measurements being done digitally, is explored. It is argued that the process of measurement can be considered equivalent to one of data compression. The smart grid will certainly result in many more signals being made available, and therefore a great deal of data compression will be taking place. Measurements will be made in parts of the power system presently unmonitored, as well as parts that are already well covered by instrumentation. The smart grid engineer must decide what it means to have “useful” information. Unless care is taken, the signal processing may furnish information that is not useful, and may not even make sense. The paper concludes by examining the possibilities of data compression from multiple separate signals.

Kirkham, Harold

2013-02-27T23:59:59.000Z

298

Revolution Environmental | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-g Grant of Access(CaliforniaProductionKGRA, Idaho. Final

299

Final report on grand challenge LDRD project : a revolution in lighting : building the science and technology base for ultra-efficient solid-state lighting.  

SciTech Connect (OSTI)

This SAND report is the final report on Sandia's Grand Challenge LDRD Project 27328, 'A Revolution in Lighting -- Building the Science and Technology Base for Ultra-Efficient Solid-state Lighting.' This project, which for brevity we refer to as the SSL GCLDRD, is considered one of Sandia's most successful GCLDRDs. As a result, this report reviews not only technical highlights, but also the genesis of the idea for Solid-state Lighting (SSL), the initiation of the SSL GCLDRD, and the goals, scope, success metrics, and evolution of the SSL GCLDRD over the course of its life. One way in which the SSL GCLDRD was different from other GCLDRDs was that it coincided with a larger effort by the SSL community - primarily industrial companies investing in SSL, but also universities, trade organizations, and other Department of Energy (DOE) national laboratories - to support a national initiative in SSL R&D. Sandia was a major player in publicizing the tremendous energy savings potential of SSL, and in helping to develop, unify and support community consensus for such an initiative. Hence, our activities in this area, discussed in Chapter 6, were substantial: white papers; SSL technology workshops and roadmaps; support for the Optoelectronics Industry Development Association (OIDA), DOE and Senator Bingaman's office; extensive public relations and media activities; and a worldwide SSL community website. Many science and technology advances and breakthroughs were also enabled under this GCLDRD, resulting in: 55 publications; 124 presentations; 10 book chapters and reports; 5 U.S. patent applications including 1 already issued; and 14 patent disclosures not yet applied for. Twenty-six invited talks were given, at prestigious venues such as the American Physical Society Meeting, the Materials Research Society Meeting, the AVS International Symposium, and the Electrochemical Society Meeting. This report contains a summary of these science and technology advances and breakthroughs, with Chapters 1-5 devoted to the five technical task areas: 1 Fundamental Materials Physics; 2 111-Nitride Growth Chemistry and Substrate Physics; 3 111-Nitride MOCVD Reactor Design and In-Situ Monitoring; 4 Advanced Light-Emitting Devices; and 5 Phosphors and Encapsulants. Chapter 7 (Appendix A) contains a listing of publications, presentations, and patents. Finally, the SSL GCLDRD resulted in numerous actual and pending follow-on programs for Sandia, including multiple grants from DOE and the Defense Advanced Research Projects Agency (DARPA), and Cooperative Research and Development Agreements (CRADAs) with SSL companies. Many of these follow-on programs arose out of contacts developed through our External Advisory Committee (EAC). In h s and other ways, the EAC played a very important role. Chapter 8 (Appendix B) contains the full (unedited) text of the EAC reviews that were held periodically during the course of the project.

Copeland, Robert Guild; Mitchell, Christine Charlotte; Follstaedt, David Martin; Lee, Stephen Roger; Shul, Randy John; Fischer, Arthur Joseph; Chow, Weng Wah Dr.; Myers, Samuel Maxwell, Jr.; Thoma, Steven George; Gee, James Martin; Coltrin, Michael Elliott; Burdick, Brent A.; Salamone, Angelo, L., Jr.; Hadley, G. Ronald; Elliott, Russell D.; Campbell, Jonathan M.; Abrams, Billie Lynn; Wendt, Joel Robert; Pawlowski, Roger Patrick; Simpson, Regina Lynn; Kurtz, Steven Ross; Cole, Phillip James; Fullmer, Kristine Wanta; Seager, Carleton Hoover; Bogart, Katherine Huderle Andersen; Biefeld, Robert Malcolm; Kerley, Thomas M.; Norman, Adam K.; Tallant, David Robert; Woessner, Stephen Matthew; Figiel, Jeffrey James; Moffat, Harry K.; Provencio, Paula Polyak; Emerson, John Allen; Kaplar, Robert James; Wilcoxon, Jess Patrick; Waldrip, Karen Elizabeth; Rohwer, Lauren Elizabeth Shea; Cross, Karen Charlene; Wright, Alan Francis; Gonzales, Rene Marie; Salinger, Andrew Gerhard; Crawford, Mary Hagerott; Garcia, Marie L.; Allen, Mark S.; Southwell, Edwin T. (Perspectives, Sedona, AZ); Bauer, Tom M.; Monson, Mary Ann; Tsao, Jeffrey Yeenien; Creighton, James Randall; Allerman, Andrew Alan; Simmons, Jerry A.; Boyack, Kevin W.; Jones, Eric Daniel; Moran, Michael P.; Pinzon, Marcia J. (Perspectives, Sedona, AZ); Pinson, Ariane O. (Perspectives, Sedona, AZ); Miksovic, Ann E. (Perspectives, Sedona, AZ); Wang, George T.; Ashby, Carol Iris Hill; Missert, Nancy A.; Koleske, Daniel David; Rahal, Nabeel M.

2004-06-01T23:59:59.000Z

300

Structural health and prognostics management for offshore wind turbines : case studies of rotor fault and blade damage with initial O&M cost modeling.  

SciTech Connect (OSTI)

Operations and maintenance costs for offshore wind plants are significantly higher than the current costs for land-based (onshore) wind plants. One way to reduce these costs would be to implement a structural health and prognostic management (SHPM) system as part of a condition based maintenance paradigm with smart load management and utilize a state-based cost model to assess the economics associated with use of the SHPM system. To facilitate the development of such a system a multi-scale modeling approach developed in prior work is used to identify how the underlying physics of the system are affected by the presence of damage and faults, and how these changes manifest themselves in the operational response of a full turbine. This methodology was used to investigate two case studies: (1) the effects of rotor imbalance due to pitch error (aerodynamic imbalance) and mass imbalance and (2) disbond of the shear web; both on a 5-MW offshore wind turbine in the present report. Based on simulations of damage in the turbine model, the operational measurements that demonstrated the highest sensitivity to the damage/faults were the blade tip accelerations and local pitching moments for both imbalance and shear web disbond. The initial cost model provided a great deal of insight into the estimated savings in operations and maintenance costs due to the implementation of an effective SHPM system. The integration of the health monitoring information and O&M cost versus damage/fault severity information provides the initial steps to identify processes to reduce operations and maintenance costs for an offshore wind farm while increasing turbine availability, revenue, and overall profit.

Myrent, Noah J. [Purdue Center for Systems Integrity, Lafayette, IN; Kusnick, Joshua F. [Purdue Center for Systems Integrity, Lafayette, IN; Barrett, Natalie C. [Purdue Center for Systems Integrity, Lafayette, IN; Adams, Douglas E. [Purdue Center for Systems Integrity, Lafayette, IN; Griffith, Daniel Todd

2013-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Sandia National Laboratories: National Rotor Testbed Rotor Design  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt Storage System ArevaNRGAnalysisIntegrated Airfoil

302

Sandia National Laboratories: Rotor Innovation  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik SpoerkeSolarCybernetics: DynamicCybernetics: WeighBlade Sensors

303

Film Cooling, Heat Transfer and Aerodynamic Measurements in a Three Stage Research Gas Turbine  

E-Print Network [OSTI]

turbine rotational speeds namely, 2400rpm, 2550rpm and 3000rpm. Interstage aerodynamic measurements with miniature five hole probes are also acquired at these speeds. The aerodynamic data characterizes the flow along the first stage rotor exit, second...

Suryanarayanan, Arun

2010-07-14T23:59:59.000Z

304

The Clean Tech Revolution: Why It's Real  

E-Print Network [OSTI]

(GW) 0 1 2 3 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 Total Installed Solar Capacity(GW) 0 Irvine, California The problem is huge #12;4/1/2011 2 The problem is getting worse * Harvard Public 10 20 30 40 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 Total Installed Wind Capacity

Loudon, Catherine

305

New Years Revolutions | Department of Energy  

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

CFLs, energy-saving incandescents, and LEDs - and upgrading 15 of the inefficient incandescent light bulbs in your home could save you about 50 per year. And if you haven't...

306

CHP -- A revolution in the making  

SciTech Connect (OSTI)

Liberalization, globalization, and particularly climate change are changing energy thinking. In the future, climate change will be tackled by improved energy efficiency and carbon neutral sources of energy, but much more could be done today by the more widespread use of CHP. CHP has made reasonably good progress in the UK and Europe, due to energy industry liberalization and the widespread availability of gas. But the pursuit of sustainability objectives requires government intervention into liberalized markets. While the current UK Government is a strong supporter of CHP, major opportunities to develop CHP were missed in favor of less efficient CCGT power stations over the last decade. The two critical policy issues in the UK now are the proposed tax on the business use of energy and the current reform of electricity trading arrangements. Both could impact favorably on the development of CHP. The UK CHP Association, COGEN Europe and the International Cogeneration Alliance continue to press the case for CHP.

Green, D.

1999-07-01T23:59:59.000Z

307

Ceramic fabricator quality revolution: A case study  

SciTech Connect (OSTI)

This case study discusses statistical process control and other quality tools in the application of continuous improvement and total quality management programs to a mature ceramic parts manufacturing operation that had been producing quality'' products for many years. By applying these tools, significant incremental improvements in process performance and product quality were achieved.

Martin, S.C. (Advanced Refractory Technologies, Inc., Buffalo, NY (United States))

1993-11-01T23:59:59.000Z

308

Revolutions in energy through modeling and simulation  

SciTech Connect (OSTI)

The development and application of energy technologies for all aspects from generation to storage have improved dramatically with the advent of advanced computational tools, particularly modeling and simulation. Modeling and simulation are not new to energy technology development, and have been used extensively ever since the first commercial computers were available. However, recent advances in computing power and access have broadened the extent and use, and, through increased fidelity (i.e., accuracy) of the models due to greatly enhanced computing power, the increased reliance on modeling and simulation has shifted the balance point between modeling and experimentation. The complex nature of energy technologies has motivated researchers to use these tools to understand better performance, reliability and cost issues related to energy. The tools originated in sciences such as the strength of materials (nuclear reactor containment vessels); physics, heat transfer and fluid flow (oil production); chemistry, physics, and electronics (photovoltaics); and geosciences and fluid flow (oil exploration and reservoir storage). Other tools include mathematics, such as statistics, for assessing project risks. This paper describes a few advancements made possible by these tools and explores the benefits and costs of their use, particularly as they relate to the acceleration of energy technology development. The computational complexity ranges from basic spreadsheets to complex numerical simulations using hardware ranging from personal computers (PCs) to Cray computers. In all cases, the benefits of using modeling and simulation relate to lower risks, accelerated technology development, or lower cost projects.

Tatro, M.; Woodard, J.

1998-08-01T23:59:59.000Z

309

Wind Revolutions LLC | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORTOpenWende NewSowitec do BrasilGmbHWeardale

310

Quiet Revolution Ltd | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExploration JumpSanyalTempWellheadWahkiakum CountyPzero JumpQuestion about MapQuiet

311

Nonlinear analysis of anisotropic shells of revolution  

E-Print Network [OSTI]

Modifications REFERENCES BIBLIOGRAPHY VITA 25 34 41 48 54 55 56 57 LIST OF FIGURES Figure Page l. Shell Geometry 2. Positive Direction for Oisplacements 3. Positive Direction for Rotations 4. Positive Direction for Forces . . . 5. Positive... Direction for Moments 6 . Positive Direction for Loads 7. U Displacement for Conical Shell 8. M Displacement for Conical Shell . 9. M Displacement for Spherical Cap 10. I4 Displacement for 4. 5 psi Load, Linear and Nonlinear Solution . ll. Load vs M...

Kelley, William Rhea

1970-01-01T23:59:59.000Z

312

Cyber Physical Systems: The Next Computing Revolution  

E-Print Network [OSTI]

devices in every place/person o "Invisible" part of the environment o Millions for desktops and billions Building Environment Future Combat System Integra(on & Scaling Challenges Low End High End Ubiquitous integration with a physical environment Global Information Grid Smart Building Environment #12;Trend 3

Ingrand, François

313

Mixed quantum/classical theory for inelastic scattering of asymmetric-top-rotor + atom in the body-fixed reference frame and application to the H{sub 2}O + He system  

SciTech Connect (OSTI)

The mixed quantum/classical theory (MQCT) for inelastic molecule-atom scattering developed recently [A. Semenov and D. Babikov, J. Chem. Phys. 139, 174108 (2013)] is extended to treat a general case of an asymmetric-top-rotor molecule in the body-fixed reference frame. This complements a similar theory formulated in the space-fixed reference-frame [M. Ivanov, M.-L. Dubernet, and D. Babikov, J. Chem. Phys. 140, 134301 (2014)]. Here, the goal was to develop an approximate computationally affordable treatment of the rotationally inelastic scattering and apply it to H{sub 2}O + He. We found that MQCT is somewhat less accurate at lower scattering energies. For example, below E = 1000 cm{sup ?1} the typical errors in the values of inelastic scattering cross sections are on the order of 10%. However, at higher scattering energies MQCT method appears to be rather accurate. Thus, at scattering energies above 2000 cm{sup ?1} the errors are consistently in the range of 1%–2%, which is basically our convergence criterion with respect to the number of trajectories. At these conditions our MQCT method remains computationally affordable. We found that computational cost of the fully-coupled MQCT calculations scales as n{sup 2}, where n is the number of channels. This is more favorable than the full-quantum inelastic scattering calculations that scale as n{sup 3}. Our conclusion is that for complex systems (heavy collision partners with many internal states) and at higher scattering energies MQCT may offer significant computational advantages.

Semenov, Alexander [Chemistry Department, Wehr Chemistry Building, Marquette University, Milwaukee, Wisconsin 53201-1881 (United States); PSL Research University, Observatoire de Paris, Sorbonne Universités, UPMC Univ Paris 06, ENS, UCP, CNRS, UMR8112, LERMA, 5 Place Janssen, 92195 Meudon (France); Dubernet, Marie-Lise [PSL Research University, Observatoire de Paris, Sorbonne Universités, UPMC Univ Paris 06, ENS, UCP, CNRS, UMR8112, LERMA, 5 Place Janssen, 92195 Meudon (France); Babikov, Dmitri, E-mail: dmitri.babikov@mu.edu [Chemistry Department, Wehr Chemistry Building, Marquette University, Milwaukee, Wisconsin 53201-1881 (United States)

2014-09-21T23:59:59.000Z

314

A REVOLUTION WITHIN A REVOLUTION: AFRICAN AMERICAN AND WOMEN BEAT POETS  

E-Print Network [OSTI]

The objective of this research was to shed light on African Americans and Women poets influenced by the Beat Generation. I chose LeRoi Jones/Amiri Baraka, Diane di Prima and Bob Kaufman. I researched each poet's background, poetics, published...

Abernethy, Olivia

2008-08-19T23:59:59.000Z

315

Sandia National Laboratories: Rotor Aerodynamic Design  

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

Generator Modeling Radar Friendly Blades Special Programs Techno-Economic Modeling, Analysis, and Support Analysis, Modeling, Cost of Energy, and Policy Impact: Wind Vision 2014...

316

Turbulence ingestion noise of open rotors  

E-Print Network [OSTI]

-Edge Interaction (TBL-TE) is a dominant noise source for wind turbines (Kamruzzaman et al., 2008), as well as being a subject of active research within aeroengine aeroacoustics (Pagano et al., 2009). Towards the trailing edge of a blade the boundary layer plays... , flight testing and calibration of methods. Hoff included a diagram which illustrated the many different propfan noise sources, see Figure 1.4. There was also a recognition that distortion is an important factor in predicting the acoustics of propeller...

Robison, Rosalyn Aruna Venner

2012-04-10T23:59:59.000Z

317

Optimum rotationally symmetric shells for flywheel rotors  

DOE Patents [OSTI]

A flywheel rim support formed from two shell halves. Each of the shell halves has a disc connected to the central shaft. A first shell element connects to the disc at an interface. A second shell element connects to the first shell element. The second shell element has a plurality of meridional slits. A cylindrical shell element connects to the second shell element. The cylindrical shell element connects to the inner surface of the flywheel rim. A flywheel rim support having a disc connected an outer diameter of a shaft. Two optimally shaped shell elements connect to the optimally shaped disc at an interface. The interface defines a discontinuity in a meridional slope of said support. A cylindrical shell element connects to the two shell elements. The cylindrical shell element has an outer surface for connecting to the inner surface of the flywheel rim. A flywheel rim casing includes an annular shell connected to the central shaft. The annular shell connects to the flywheel rim. A composite shell surrounds the shaft, annular shell and flywheel rim.

Blake, Henry W. (Oak Ridge, TN)

2000-01-01T23:59:59.000Z

318

Methods of making wind turbine rotor blades  

DOE Patents [OSTI]

A method of manufacturing a root portion of a wind turbine blade includes, in an exemplary embodiment, providing an outer layer of reinforcing fibers including at least two woven mats of reinforcing fibers, providing an inner layer of reinforcing fibers including at least two woven mats of reinforcing fibers, and positioning at least two bands of reinforcing fibers between the inner and outer layers, with each band of reinforcing fibers including at least two woven mats of reinforcing fibers. The method further includes positioning a mat of randomly arranged reinforcing fibers between each pair of adjacent bands of reinforcing fibers, introducing a polymeric resin into the root potion of the wind turbine blade, infusing the resin through the outer layer, the inner layer, each band of reinforcing fibers, and each mat of random reinforcing fibers, and curing the resin to form the root portion of the wind turbine blade.

Livingston, Jamie T. (Pensacola, FL); Burke, Arthur H. E. (Gulf Breeze, FL); Bakhuis, Jan Willem (Nijverdal, NL); Van Breugel, Sjef (Enschede, NL); Billen, Andrew (Daarlerveen, NL)

2008-04-01T23:59:59.000Z

319

Sandia National Laboratories: SMART Rotor Video  

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

* Video * Wind * wind energy Comments are closed. Renewable Energy Wind Energy Wind Plant Optimization Test Site Operations & Maintenance Safety: Test Facilities Capital Equipment...

320

Rotor assembly including superconducting magnetic coil  

DOE Patents [OSTI]

Superconducting coils and methods of manufacture include a superconductor tape wound concentrically about and disposed along an axis of the coil to define an opening having a dimension which gradually decreases, in the direction along the axis, from a first end to a second end of the coil. Each turn of the superconductor tape has a broad surface maintained substantially parallel to the axis of the coil.

Snitchler, Gregory L. (Shrewsbury, MA); Gamble, Bruce B. (Wellesley, MA); Voccio, John P. (Somerville, MA)

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Aeroelastic analysis of a helicopter rotor  

E-Print Network [OSTI]

was in coalescence with the two-dimensional predicted flutter boundary, three ? dimensional theory was required. The effects of wake contraction and tip ~ortex presence were found to be negligible in comparison to that of the helical vortex sheet... are extended to Dr. Leland A. Carlson for reviewing the original manuscript for this thesis and editing it. Dr. Garison and Dr. Ralph K. Cavin also served on the advisory commit tee f or this thesis and their assistance is acknowledged. The financial...

McQuien, Larry Jay

1977-01-01T23:59:59.000Z

322

Sandia National Laboratories: functional rotor scaling  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1development Sandia,evaluatingfull module characterization HelioVolt Modulesrotor

323

Sandia National Laboratories: rotor structural verification  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbineredox-active perovskiteremoving thereverse osmosisrotor structural

324

Sandia National Laboratories: Rotor Aerodynamic Design  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik SpoerkeSolarCybernetics: DynamicCybernetics: Weigh

325

Sandia National Laboratories: Rotor Design Tools  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik SpoerkeSolarCybernetics: DynamicCybernetics: WeighBlade Sensors andDesign

326

Sandia National Laboratories: SMART Rotor Video  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik SpoerkeSolarCybernetics:2P DOE-SponsoredParticipation in theEnergyWind

327

Sandia National Laboratories: National Rotor Testbed  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt Storage System ArevaNRGAnalysis

328

Speeding the transition: Designing a fuel-cell hypercar  

SciTech Connect (OSTI)

A rapid transformation now underway in automotive technology could accelerate the transition to transportation powered by fuel cells. Ultralight, advanced-composite, low-drag, hybrid-electric hypercars--using combustion engines--could be three- to fourfold more efficient and one or two orders of magnitude cleaner than today`s cars, yet equally safe, sporty, desirable, and (probably) affordable. Further, important manufacturing advantages--including low tooling and equipment costs, greater mechanical simplicity, autobody parts consolidation, shorter product cycles, and reduced assembly effort and space--permit a free-market commercialization strategy. This paper discusses a conceptual hypercar powered by a proton-exchange-membrane fuel cell (PEMFC). It outlines the implications of platform physics and component selection for the vehicle`s mass budget and performance. The high fuel-to-traction conversion efficiency of the hypercar platform could help automakers overcome the Achilles` heel of hydrogen-powered vehicles: onboard storage. Moreover, because hypercars would require significantly less tractive power, and even less fuel-cell power, they could adopt fuel cells earlier, before fuel cells` specific cost, mass, and volume have fully matured. In the meantime, commercialization in buildings can help prepare fuel cells for hypercars. The promising performance of hydrogen-fueled PEMFC hypercars suggests important opportunities in infrastructure development for direct-hydrogen vehicles.

Williams, B.D.; Moore, T.C.; Lovins, A.B. [Rocky Mountain Inst., Snowmass, CO (United States). Hypercar Center

1997-12-31T23:59:59.000Z

329

Balancing of high speed, flexible rotating shafts across critical speeds  

E-Print Network [OSTI]

this is equivalent to eliminating certain sen- sors. Once the influence coefficient matrix is square, the solution procedure is exactly that of the single speed case. The computed balance weights should now null the rotor vibration at the sensor ports which were... critical speed, The Sin- gle Speed and the Exact Point-Speed techniques were determined to be relatively ineffective over this speed range; however, the Least Squares procedure yields a dramatic decrease in rotor vibration over the entire speed range...

White, Gary Paul

1977-01-01T23:59:59.000Z

330

Improving the resolution of chopper spectrometers at pulsed neutron sources  

SciTech Connect (OSTI)

We examine the relationships between intensity and resolution in pulsed-source chopper spectrometers, including the effects of Soller collimation, narrower rotor slits and higher rotor speeds. The basis is a simplified description of a spectrometer, approximately optimizing the rotor pulse and lighthouse effects. the analysis includes a new treatment of the angular distribution transmitted through a system consisting of a coarse collimator and a Soller collimator. The results encourage the prospect for a reasonably easily accomplished, higher resolution, optional configuration of the pulsed source chopper spectrometers at IPNS. 6 refs., 5 figs.

Carpenter, J.M. (Argonne National Lab., IL (USA)); Mildner, D.F.R. (National Bureau of Standards, Washington, DC (USA). Center for Analytical Chemistry)

1990-01-01T23:59:59.000Z

331

The Arab Revolution Takes Back the Public Space  

E-Print Network [OSTI]

In 1991, al-Sadiq al-Nayhum, a Libyan thinker exiled in Geneva, published a book of collected essays in Arabic with the provocative title Islam in Captivity: Who Stole the Mosque and Where Did Friday Disappear?2 The thesis ...

Rabbat, Nasser

332

The Manycore Revolution and Parallel Software Projects at NERSC  

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

in both programmability and performance. They allow more efficient one-sided communication and they directly map to shared memory features on multicore and SMP nodes. By...

333

An improved shell of revolution element utilizing cubic displacement functions  

E-Print Network [OSTI]

-curved sheli of revolu Lion element developed by Stricklin, et al. ' uses polynomial displac ment functions similar 11 to Eq. (I. l) in the m. ridional direction and a Fourier series in the cir "umferential direction. For axisyrmetric loadinc, this fi. Id..., and e are defined in Fig. 2-1. The rotations of the normal to the shell about the o- and s -axes are defined by e&3 and e23, respectively. Using th, strains described in Eq, (2 . 4), the strai n energy expression for orthotropi c shells may...

Mebane, Paul Mitchell

2012-06-07T23:59:59.000Z

334

The Nuclear Revolution, Relative Gains, and International Nuclear Assistance  

E-Print Network [OSTI]

Organizations, accidents, and nuclear weapons. Princeton,the likelihood of a nuclear accident (Sagan 1993, 1995). “potential for a nuclear accident. Yet it seems implausible

Kroenig, Matthew

2006-01-01T23:59:59.000Z

335

Michigan v. Bryant: The Counter-Revolution Begins  

E-Print Network [OSTI]

§ 5001, p. 36 (2005). Bryant v. Davis; The CounterevolutionOral Argument, MIchigan v. Bryant, 2010 WL 3907894, p. 6 (Oral Argument, MIchigan v. Bryant, 2010 WL 3907894, p. 6 (

Graham, Kenneth W. Jr.

2011-01-01T23:59:59.000Z

336

Lin Yutang and the revolution of modern Chinese humor  

E-Print Network [OSTI]

into eight sections with each section corresponding to approximately one year of Lin's contributions the China Critic magazine and specifically his "Little Critic" column. Chapter Five concludes the thesis by considering Lin's contributions as a social...

Sample, Joseph Clayton

1993-01-01T23:59:59.000Z

337

Database architecture (R)evolution: New hardware vs. new software  

E-Print Network [OSTI]

The last few years have been exciting for data management system designers. The explosion in user and enterprise data coupled with the availability of newer, cheaper, and more capable hardware have lead system designers ...

Madden, Samuel R.

338

Jarry, Agent of Three Powers During the French Revolution  

E-Print Network [OSTI]

was at t h i s t ime a P russ ian a l l i a a o o . I t i s around t h i s proposed a l l i a n c e tha t th© i n t e r e s t centers , 1, Sent by th© C o n s t i t u t i o n a l i s t s . I t s moat ardent advocates were S i r e n (3 ) , a general i n th... Prussian neu t r a l i t y , disconcerted for a time the bolder pl-ans of B i r on and his associates ($) for b r ib ing the Pruss ian court in to an ac t i ve a l l i ance wi th France, But B i r on soon 1,Sorel , I I . , 338. 2. SoreX I I . , 333. 3...

Manning, William Roy

1902-01-01T23:59:59.000Z

339

Culturing revolution : the local Communists of China's Hainan Island  

E-Print Network [OSTI]

Thirtieth Year of the PLA], 486-502 (volume 10). Beijing:zhuan [Biographies of High-Ranking PLA Officers]. Beijing:ed. Chinese Warfighting: The PLA Experience Since 1949. New

Murray, Jeremy Andrew

2011-01-01T23:59:59.000Z

340

The Culture of revolution: Revolutionary transformation in Iran.  

E-Print Network [OSTI]

??The current challenges to the authority of the Islamic Republic and mass demonstrations in opposition to the presidential elections of 2009 in Iran, have raised… (more)

Kojoori-Saatchi, Autoosa Elizabeth

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Revolution Now: The Future Arrives for Four Clean Energy Technologies...  

Energy Savers [EERE]

that are here today: onshore wind power, polysilicon photovoltaic (PV) modules, light-emitting diodes (LEDs), and electric vehicles (EVs). That study showed how dramatic...

342

The Nuclear Revolution, Relative Gains, and International Nuclear Assistance  

E-Print Network [OSTI]

204. Bhatia, Shyam. 1988. Nuclear rivals in the Middle East.of the merits of selective nuclear proliferation. Journal ofThe Case for a Ukranian nuclear deterrent. Foreign Affairs.

Kroenig, Matthew

2006-01-01T23:59:59.000Z

343

The Currency of Revolution in Southern Nigeria: 1880-1948  

E-Print Network [OSTI]

may be gained from the stock-taking exercises effected byTreasury. The first stock-taking on March 2.2, 1880,Chilean dollars A second stock-taking on April 28, 1880,

Ibekwe Ofonagoro, Walter

2012-01-01T23:59:59.000Z

344

Volume 19, Number 4 The Cognitive Revolution: The Next Wave  

E-Print Network [OSTI]

's not just a matter of explaining its implications to the scientific community at large. We psychologists-processing (computational) terms. I explained that these are not the poor relations of neural or molecular theories: Neural the information processing level of description is essential for knowing what the neural circuits are doing

Cosmides, Leda

345

Culturing revolution : the local Communists of China's Hainan Island  

E-Print Network [OSTI]

One: Deserted Treasure Island……………………………………………….13 ChapterChapter One Deserted Treasure Island: The Social Ecology andIsolated Island/Treasure Island – Gudao / Baodao Social and

Murray, Jeremy Andrew

2011-01-01T23:59:59.000Z

346

The Nuclear Revolution, Relative Gains, and International Nuclear Assistance  

E-Print Network [OSTI]

nature of the nuclear recipient’s security environment. ThisKeywords: Nuclear weapons proliferation; security; securitynature of the nuclear recipient’s security environment. This

Kroenig, Matthew

2006-01-01T23:59:59.000Z

347

A Clean Energy Revolution -- Now | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehiclesTankless orA BRIEF HISTORY OF THE DEPARTMENT OF ENERGY AA Clean

348

Revolution Now: The Future Arrives for Four Clean Energy Technologies --  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG |September 15,2015Department ofRequirementsEnergyJ uRevitalizing American2014

349

Revolution Now: The Future Arrives for Four Clean Energy Technologies |  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG |September 15,2015Department ofRequirementsEnergyJ uRevitalizing

350

Is The Distributed Generation Revolution Coming: A Federal Perspective  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGY TAX POLICIES7.pdfFuel2007 | Department7 U.S.DepartmentEnergy IowaPortland, OR

351

Is The Distributed Generation Revolution Coming: A Federal Perspective  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGY TAX POLICIES7.pdfFuel2007 | Department7 U.S.DepartmentEnergy IowaPortland,

352

Is The Distributed Generation Revolution Coming: A Federal Perspective  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGY TAX POLICIES7.pdfFuel2007 | Department7 U.S.DepartmentEnergy IowaPortland,San

353

Fuel Cell Startup Could Spark A Revolution | GE Global Research  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickr Flickr Editor's note:Computing | ArgonnechallengingFryFuel Cell

354

The Manycore Revolution and Parallel Software Projects at NERSC  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus TomAboutManusScienceThe Life of Enrico Fermi The The

355

A review of "Radicalism in British Literary Culture: From Revolution to Revolution." by T. Morton and N. Smith, eds.  

E-Print Network [OSTI]

?help construct and define new po- litical eras. The contributors are ?reading radicals reading other 262 SEVENTEENTH-CENTURY NEWS texts? (14). If ?radicalism? seems a somewhat unusual appellation for the reform movements and protests of the long eighteenth cen... for scientific inves- tigation. By the early nineteenth century, women such as Ann Moore were using fasting for radical protest, in Moore?s case against the poverty women faced when their husbands deserted them. Sussman uses Trapnel?s fasting not only...

R. C. Taylor

2003-01-01T23:59:59.000Z

356

Measurements of leakage, power loss and rotordynamic force coefficients in a hybrid brush seal  

E-Print Network [OSTI]

This thesis presents measurements of power loss and leakage in a hybrid brush seal (HBS) for increasing pressure differentials and over a range of rotor speeds. The test HBS, Haynes-25 bristle pack [~850 bristles/cm] and 45o lay angle, is 166.4 mm...

Baker, Jose Enrique

2009-05-15T23:59:59.000Z

357

Real-Time Fuzzy Control of Sensorless PM Drive Systems Dr. Kasim M. Al-Aubidy  

E-Print Network [OSTI]

oscillator controls the motor speed. The other mode is the closed-loop mode, in which the inverter power is essential for controlling the power devices of the inverter. The main problem with present rotor position without the new trends in softcomputing. There is a lot of literature on the design of AC drive systems

358

Fuzzy logic control implementation in sensorless PM drive systems  

E-Print Network [OSTI]

is essential for controlling the power devices of the inverter. The main problem with present rotor position be difficult to implement without the new trends in softcomputing. There is a lot of literature on the design an independent oscillator controls the motor speed. The other mode is the closed-loop mode, in which the inverter

359

STANDARDS FOR MEASUREMENTS AND TESTING OF WIND TURBINE POWER QUALITY Poul Srensen, Ris National Laboratory, P.O.Box 49, DK-4000 Roskilde, Denmark.  

E-Print Network [OSTI]

STANDARDS FOR MEASUREMENTS AND TESTING OF WIND TURBINE POWER QUALITY Poul Sørensen, Risø National and verification of wind turbine power quality. The work has been organised in three major activities. The first farm summation on the power quality of wind turbines with constant rotor speed. The third activity has

Heinemann, Detlev

360

Control strategy for variable-speed, stall-regulated wind turbines  

SciTech Connect (OSTI)

A variable-speed, constant-pitch wind turbine was investigated to evaluate the feasibility of constraining its rotor speed and power output without the benefit of active aerodynamic control devices. A strategy was postulated to control rotational speed by specifying the demanded generator torque. By controlling rotor speed in relation to wind speed, the aerodynamic power extracted by the blades from the wind was manipulated. Specifically, the blades were caused to stall in high winds. In low and moderate winds, the demanded generator torque and the resulting rotor speed were controlled to cause the wind turbine to operate near maximum efficiency. A computational model was developed, and simulations were conducted of operation in high turbulent winds. Results indicated that rotor speed and power output were well regulated. 7 refs., 7 figs.

Muljadi, E.; Pierce, K.; Migliore, P.

1998-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Magnetism and Mott transition: A slave-rotor study  

E-Print Network [OSTI]

Motivated by the debate of the spin-density-wave (SDW) versus local-moment (LM) picture in the iron-based superconducting (FeSC) materials, we consider a two-band orbital-symmetric Hubbard model in which there is robust ...

Ko, Wing Ho

362

Connector tube for a turbine rotor cooling circuit  

DOE Patents [OSTI]

A tubular connector adapted to extend between two tubular components comprising a tubular body having an internal diameter, a first free end including an annular radial flange having a tapered surface adapted to engage a complementary seating surface on a first of the two tubular components, the internal diameter remaining constant through the first free end; and a second free end having an annular bulbous shape adapted to seat within a cylindrical end of a second of the two tubular components.

Li, Ming Cheng (Cincinnati, OH)

2003-06-24T23:59:59.000Z

363

SMART Wind Turbine Rotor: Data Analysis and Conclusions  

Broader source: Energy.gov [DOE]

This report documents the data post-processing and analysis performed to date on the field test data.

364

DOE and Sandia National Laboratories Develop National Rotor Testbed...  

Energy Savers [EERE]

The SWiFT facility, which was commissioned this July, is unique in that it utilizes wind turbines that are large enough to represent the physics relevant to utility-scale machines,...

365

Field Testing of a Quad Rotor Smartphone Control System  

E-Print Network [OSTI]

With recent regulatory efforts to reduce restrictions placed on the operation of Micro Air Vehicles (MAVs) in the United States, it is likely that in the next few years, these vehicles will become commonplace in the ...

Cummings, M.L.

2012-01-01T23:59:59.000Z

366

Substantially Parallel Flux Uncluttered Rotor Machines (U-Machine)  

Energy Innovation Portal (Marketing Summaries) [EERE]

A general concern based on the supply and demand trend of the permanent magnet (PM) raw materials suggests the need for elimination of these materials from electric motors (and generators) to control future costs. This invention discloses a new motor topology that eliminates the PM. Other innovations include brushless adjustable field excitation for high starting torque, field weakening, and power factor improvement and novel locks for higher peak speed. This novel machine shows promising...

2010-02-03T23:59:59.000Z

367

A Design Study ofa 1MW Stall Regulated Rotor  

E-Print Network [OSTI]

of special tailored airfoils has been found to be around 4% on the annual energy production and 1 55 4.8 Summary 56 5 Comparison with LM 24.0 59 5.1 Assumptions 59 5.2 Geometry 60 5.3 Annual energy production and loads 62 5.4 Materia

368

PALIERS POUR ROTORS TOURNANT A GRANDE VITESSE Par G. GOBERT,  

E-Print Network [OSTI]

l'air comprimé comme gaz. Le principe consiste ŕ sépa- rer, par un film gazeux, un plan mobile d atmosphérique aux abords du gicleur, due soit ŕ un écoulement oů la vitesse du gaz atteint la célérité locale du turbine (poids = 27 g). ~ b = butée : 4 gicleurs 0 1 mm sur 0 20 mm. 4 gicleurs 0 1 mm sur 0 34 mm. Modčle

Paris-Sud XI, Université de

369

MHK Technologies/Wave Rotor | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpIncMAKGalway Bay IEOWCCatcher.png TechnologyRoller < MHKRotor <

370

DOE and Sandia National Laboratories Develop National Rotor Testbed |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana. DOCUMENTSof EnergyAllianceDepartment of

371

Bore tube assembly for steam cooling a turbine rotor  

DOE Patents [OSTI]

An axial bore tube assembly for a turbine is provided to supply cooling steam to hot gas components of the turbine wheels and return the spent cooling steam. A pair of inner and outer tubes define a steam supply passage concentric about an inner return passage. The forward ends of the tubes communicate with an end cap assembly having sets of peripheral holes communicating with first and second sets of radial tubes whereby cooling steam from the concentric passage is supplied through the end cap holes to radial tubes for cooling the buckets and return steam from the buckets is provided through the second set of radial tubes through a second set of openings of the end cap into the coaxial return passage. A radial-to-axial flow transitioning device, including anti-swirling vanes is provided in the end cap. A strut ring adjacent the aft end of the bore tube assembly permits axial and radial thermal expansion of the inner tube relative to the outer tube.

DeStefano, Thomas Daniel (Ballston Lake, NY); Wilson, Ian David (Clifton Park, NY)

2002-01-01T23:59:59.000Z

372

Sandia National Laboratories: capture more wind with longer rotors  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1development Sandia, NREL Release Wavearc-faultbest paperbiomarineblendingthe

373

Sandia National Laboratories: increasing average wind-turbine rotor  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbine blade manufacturing the viability offuelincreaseddiameter

374

Sandia National Laboratories: wind-turbine rotor design  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systems controller systems Scaled Windwhite LEDwind turbines

375

Sandia National Laboratories: Rotor Blade Sensors and Instrumentation  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik SpoerkeSolarCybernetics: DynamicCybernetics: WeighBlade Sensors and

376

Sandia National Laboratories: Structural and Mechanical Adaptive Rotor  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErikGroundbreakingStandards Solar ThermochemicalStorage

377

SMART Wind Turbine Rotor: Data Analysis and Conclusions | Department of  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l LPROJECTS IN7 Roadmap forDKT.Awards and IncentivesSHARPofofSMART

378

Sandia National Laboratories: National Rotor Testbed Functional Scaling  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive SolarEducationStation TechnologyWindInternationalbyNRELPresented at

379

Substantially Parallel Flux Uncluttered Rotor Machines (U-Machine) - Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystalline Gallium Oxide ThinIon Cooling andStudyingSubstantial

380

Sandia National Laboratories: Rotor Blade Sensors and Instrumentation  

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

capture all of the force applied to the entire wind-turbine system. A turbine's exact wind loading is fundamental to overall system design. Due to the large potential for...

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Characteristics of a multiple disk pump with turbulent rotor flow  

E-Print Network [OSTI]

DIRHETER IINIt tl, DISCHARGE OIANETER IINlt 3. CLEARANCE OETHEEN DISKS 0. 13636 IN. TYPE SEALJ PRCKING DISKFLO PUHP; NODEL K03 TOTRL HERO HORSEPOHER X EFFICIENCY + NPSH AVAIL V Figure 12. Performance of the 11 Disk Pump at 890 rpm (Test 2) C& C...: D. 13636 IN 111'E 5EAI. PACK(NO OISKFLD PL'. "P: HDD L 40 TOTAL HERO HDRSEPOHER X EFFICIENCY + NPSH AVAIL Y Figure 14 . Performance of the 1 1 Disk Pump at 1 790 rpm ( Tes t 1 ) CV o O C) CI O C) O \\ C CC C O I-!-W I o O O O 6 )3...

Roddy, Patrick James

1985-01-01T23:59:59.000Z

382

The Brazil Technology Center Speeds the Pace of Innovation | GE Global  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2 and NbSe2 .2004The AtmosphericHomologous to

383

System and method to determine electric motor efficiency nonintrusively  

DOE Patents [OSTI]

A system and method for nonintrusively determining electric motor efficiency includes a processor programed to, while the motor is in operation, determine a plurality of stator input currents, electrical input data, a rotor speed, a value of stator resistance, and an efficiency of the motor based on the determined rotor speed, the value of stator resistance, the plurality of stator input currents, and the electrical input data. The determination of the rotor speed is based on one of the input power and the plurality of stator input currents. The determination of the value of the stator resistance is based on at least one of a horsepower rating and a combination of the plurality of stator input currents and the electrical input data. The electrical input data includes at least one of an input power and a plurality of stator input voltages.

Lu, Bin (Kenosha, WI); Habetler, Thomas G. (Snellville, GA); Harley, Ronald G. (Lawrenceville, GA)

2011-08-30T23:59:59.000Z

384

Band structure engineering for solar energy applications: ZnO1-xSex films and devices  

E-Print Network [OSTI]

energy revolution .radios, radar or microelectronics, but an energy revolution.Semiconductors and the energy revolution It has become clear

Mayer, Marie Annette

2012-01-01T23:59:59.000Z

385

Unfolding the conical zones of the dissipation-induced subcritical flutter for the rotationally symmetrical gyroscopic systems  

E-Print Network [OSTI]

Flutter of an elastic body of revolution spinning about its axis of symmetry is prohibited in the subcritical spinning speed range by the Krein theorem for the Hamiltonian perturbations. Indefinite damping creates conical domains of the subcritical flutter (subcritical parametric resonance) bifurcating into the pockets of two Whitney's umbrellas when non-conservative positional forces are additionally taken into account. This explains why in contrast to the common intuition, but in agreement with experience, symmetry-breaking stiffness variation can promote subcritical friction-induced oscillations of the rotor rather than inhibit them.

Oleg N. Kirillov

2008-09-20T23:59:59.000Z

386

Michigan State University Press  

E-Print Network [OSTI]

..................................................................... 13 Labor and Industrial Revolution ........................................ 6 Lawns

Liu, Taosheng

387

Review: Solar Revolution: The Economic Transformation of the Global Energy Industry by Travis Bradford  

E-Print Network [OSTI]

the Present." A brief history of energy is presented first.solar energy. A short history of solar energy along with its

Mirza, Umar Karim

2007-01-01T23:59:59.000Z

388

1The recent biotechnology revolution resembles information 1 (Professor of Computer Science, Mathemat-  

E-Print Network [OSTI]

to CIA World Factbook 2 , 1,166,079,217 people 2 The World Factbook by Central Intelligence Agency. https://www.cia

Mishra, Bud

389

Issue 273 5 june 2014 Sharing stories of Imperial's community robot revolution  

E-Print Network [OSTI]

: "Innovation is critical to deliver an increasingly cost efficient and less carbon intensive industry will draw on world-class expertise to carry out research to address critical issues for gas sustainability in both the short and long-term: energy efficiency, gas innovation, and carbon capture, storage and use

390

The Sober Revolution: The Political and Moral Economy of Alcohol in Modern France, 1954-1976  

E-Print Network [OSTI]

Ve République. Paris: L’Harmattan, 1994. Canevet, Corentin.XXe sičcle. Paris: l’Harmattan, 1996. Gervais, Michel,Code de la route? Paris: L’Harmattan, 2000. ____________. De

Bohling, Joseph Estle

2012-01-01T23:59:59.000Z

391

#FailedRevolutions: Using Twitter to Study the Antecedents of ISIS Support  

E-Print Network [OSTI]

Within a fairly short amount of time, the Islamic State of Iraq and Syria (ISIS) has managed to put large swaths of land in Syria and Iraq under their control. To many observers, the sheer speed at which this "state" was established was dumbfounding. To better understand the roots of this organization and its supporters we present a study using data from Twitter. We start by collecting large amounts of Arabic tweets referring to ISIS and classify them into pro-ISIS and anti-ISIS. This classification turns out to be easily done simply using the name variants used to refer to the organization: the full name and the description as "state" is associated with support, whereas abbreviations usually indicate opposition. We then "go back in time" by analyzing the historic timelines of both users supporting and opposing and look at their pre-ISIS period to gain insights into the antecedents of support. To achieve this, we build a classifier using pre-ISIS data to "predict", in retrospect, who will support or oppose th...

Magdy, Walid; Weber, Ingmar

2015-01-01T23:59:59.000Z

392

Citizenship and Emancipation: Voting Rights during the Haitian Revolution after 1793  

E-Print Network [OSTI]

, France possessed the most profitable colony in the world. By 1789, Saint-Domingue was exporting half of the world’s coffee and as much sugar as Jamaica, Cuba, and Brazil combined.1 Occupying the western half of the Caribbean island of Hispaniola...

Gaffney, Jennifer Ann

2014-04-23T23:59:59.000Z

393

A linear dynamic analysis of stiffened shells of revolution by the matrix displacement method  

E-Print Network [OSTI]

displacement approach and Houbolt's numerical method of integration. The stiffened shell structure considered here is a combination of shell structure with either meridional or circumferential stiff- eners or both. The structure is idealized... Survey Shell Structures. Stiffened Shell Structures. Objective Scope of Investigation. 1 4 4 8 13 15 II GENERAL DESCRIPTION OF THE MATRIX DISPLACEMENT METHOD. . . . . . . . . . . . . . . . . . . . . 17 Static Analysis Dynamic Analysis. 17...

Hoover, Charlie Doll

2012-06-07T23:59:59.000Z

394

THE INDUSTRIOUS REVOLUTION, THE INDUSTRIOUSNESS DISCOURSE, AND THE DEVELOPMENT OF MODERN ECONOMIES  

E-Print Network [OSTI]

modify the results. 10 Finally, there is also a fundamental problem with publications in the steam-press era (i.e. roughly after 1830). By allowing very large editions to be printed, it radically expanded the circulation and diffusion of some... the traditional meaning of luxury (hedonism) and industriousness. Desire could not be the real 20 engine of the sort continuous material progress he called luxury, for all worldly pleasures could eventually be satiated. On the contrary, he saw industriousness...

Litvine, Alexis D.

2014-05-08T23:59:59.000Z

395

A review of "1688: The First Modern Revolution" by Steve Pincus  

E-Print Network [OSTI]

,? the Edinburgh-born Bishop Gilbert Burnet somewhat surprisingly announced in 1689, quoted 348); at the same time he sees their purview beyond the boundaries of the nation, as his extensive account of the impact of Robert Molesworth?s Account of Denmark (1693...

Key, Newton

2012-01-01T23:59:59.000Z

396

A review of "Representing Revolution in Milton and His Contemporaries: Religion." by David Loewenstein  

E-Print Network [OSTI]

. In the meantime, he has produced a resource that will not need rewriting for some time to come. The delay in publishing the following review is the fault of Seventeenth- Century News, and we would like to apologize to the author and reviewer. DRD Sharon...

Jameela Lares

2002-01-01T23:59:59.000Z

397

The Iranian Legacy in the 2011 Egyptian Revolution: Military Endurance and US Foreign Policy Priorities  

E-Print Network [OSTI]

muslim -brotherhood/. 55 “Egypt govt to outlaw establishmentno to ‘Khomeini rule’ in Egypt,” Associated Foreign Press,http://www.juancole.com/2011/02/why-egypt-2011- is-not-iran-

Alimagham, Pouya

2013-01-01T23:59:59.000Z

398

Nanoscale design to enable the revolution in renewable energy Jason Baxter,a  

E-Print Network [OSTI]

of a sustainable energy generation, storage, and distribution infrastructure represents a global grand challenge focus on an important set of solar, thermal, and electrochemical energy conversion, storage a fossil-fuel-based energy economy to one that is sustainable. The energy challenge before us differs

399

Out of the Closed World: how the Computer Revolution helped to End the Cold War  

E-Print Network [OSTI]

Intuitive Science of Thermonuclear War. Harvard UniversityHerman Kahn, author of On Thermonuclear War (1960), with hisIntuitive Science of Thermonuclear War. Harvard University

Skinner, Rebecca Elizabeth

2013-01-01T23:59:59.000Z

400

Revolutions of the heart : cultivating love as a means for personal & collective transformation  

E-Print Network [OSTI]

This thesis is an exploration of people and places who, through our own lived experiences, have come to realize that the physical, ideological, and institutional separation caused by dominant American cultures and institutional ...

Supple, Courtney Rampe

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

The coming revolution in particle physics: Report of the Fermilab Long Range Planning Committee  

SciTech Connect (OSTI)

In early 2003, the Fermilab Director formed a committee (Appendix A) to examine options for the long-range future of Fermilab. Specifically, the committee was asked to respond to a charge (Appendix B), which laid out the assumptions, which were to underlie our discussions. The committee met a few times during the spring of 2003 and formulated a plan of action. It identified a number of issues that deserved attention, and a subcommittee was formed to focus on each. We agreed that in addressing these key issues, a broader participation was appropriate. The manner in which that was achieved varied from subcommittee to subcommittee to group. In some cases the expanded membership participated in all the discussions, in others, particular presentations were solicited and heard. Some subgroups met regularly over several months, others convened only for a small number of discussions. We have attempted to list participants in Appendix C. General presentations indicating the purpose of the work were given, for example at the Fermilab Users Annual Meeting. Towards the end of the summer some sense of direction developed and a series of open meetings was organized by the different subgroups. These meetings of two and more hour's duration gave the broader laboratory and user community a further chance to react to perceived directions and to make their opinions known. They were extremely well attended. In all, nearly 100 people have participated in the process including the development of initial drafts and proto-recommendations. A larger number attended the various open sessions. It is therefore likely, even expected, that the general thrusts of this report are no surprise. Nevertheless, the committee met in a number of plenary closed sessions including a two-day retreat in which all the issues were discussed and a common view was developed. The Director and Deputy Director heard and interacted with the discussions in most of these meetings. In attempting to converge, we have written the individual chapters from a slightly advocative point of view. In the final discussions and editing, we have attempted some damping. Nevertheless, if all recommendations were accepted, all positive options pursued, any reasonable budget would be exceeded. We have balanced this bottom up approach with a top down development. We tried to extract the essence and to provide a couple of balanced options based on the discussions at the retreat. Healthy, lively, and vigorous exchanges ensued which resulted in multiple rewrites and culminated in the Executive Summary for this document. It is there that you should find the most concise product of this process. In preparing the report, we did consider the potential availability of resources. We have devoted a chapter of the report to discuss the limitations of our efforts. It should be recognized that there are large variances among the public opinions about costs of large elements of the program such as the Linear Collider, or even the Proton Driver. The evolution of the laboratory budget is also very uncertain and depends on many things such as the success in physics terms of the current program. We have therefore taken a relatively optimistic point of view in achieving balance. It is in this sense that the report provides options. At any point in time, the Fermilab Director will need to make choices among the options; we hope that the broad thrusts, which we call out, will be helpful. In the remainder of the report we use chapter 2 to describe the Physics Landscape 2010-2020, which is the basis for what we would like to see happen. In chapter 3 we discuss the Linear Collider, which will be a major component of the laboratory program under any scenario and, if constructed nearby, a dominant one. In chapter 4 we describe a vigorous but evolutionary program to address the key neutrino physics areas, and in chapter 5 we discuss attractive initiatives, which would provide the necessary powerful source of protons and, hence, neutrinos for this program. A strong participation in the machine, the experiment (CMS), an

Jeff Appel et al.

2004-06-22T23:59:59.000Z

402

Version 28Oct11a Revolution & War: Geopolitics of the Middle East and  

E-Print Network [OSTI]

at http://www.iea.org/ Especially the World Energy Outlook (WEO) 10) CIA Country Briefs at http://www.cia.gov/cia/publications/factbook/ 11) BP Statistical Review of World Energy, and Historical Data Series since 1965: http://www.mei.edu/Publications/WebPublications.aspx 2) Middle East web maps http://www.mideastweb.org/maps.htm 3) Energy and Geopolitical Risk

O'Donnell, Tom

403

Dynamic analysis of shells of revolution submerged in an acoustic medium by the finite element method  

E-Print Network [OSTI]

matrix due to radiated pressure modulus of elasticity linear mid-surface strain for the shell generalized applied load matrix shear modulus generalized radiated pressure matrix assembled equivalent nodal loads due to radiated pressure weight... and the shell material are 0 037 and 0 289 slug per cubic inch, respectively, and the speed of sound in water is taken as 4700 feet per second. This corresponds to a steel shell in sea water. An in ternal pressure of 50 p. s. i. is assumed. The nodal forces...

Ng, Chi Kin

1978-01-01T23:59:59.000Z

404

Traditional revolution : formalizing the informal : a proposal for the "periphery urbanite" Lagos, Abuja & Port-Harcourt  

E-Print Network [OSTI]

The inherited modernist principles of urban design and development policy have left Social exclusion in its wake.The cities founded during colonial times and there-after continue the legacy of colonial urban development. ...

Rhodes-Vivour, Patrick

2008-01-01T23:59:59.000Z

405

Out of the Closed World: how the Computer Revolution helped to End the Cold War  

E-Print Network [OSTI]

politics of discourse in Cold War America. Cambridge, MA:John Lewis. The Cold War: A New History, 2005. Gardener,Science of Thermonuclear War. Harvard University Press.

Skinner, Rebecca Elizabeth

2013-01-01T23:59:59.000Z

406

The Problem of Pleasure: Disciplining the German Jewish Reading Revolution, 1770-1870  

E-Print Network [OSTI]

zu Grabe tragen sehen, tritt die Wissenschaft auf unddasteht: - wahrlich der tritt mit Ehrfurcht vor diesen

Bitzan, Amos

2011-01-01T23:59:59.000Z

407

Drag and Drop Streaming: the Next Revolution in E-Learning Laura Guerra  

E-Print Network [OSTI]

Terms Management, Design, Human Factors, Standardization. Keywords University of Houston, VClass in a streaming format. In just three simple steps professors are able to capture and publish lectures on-line what was said in class, but also what was displayed on the overhead and what was written on the board

Azevedo, Ricardo

408

1. The Next Revolution in Wireless and Mobility How RFID and Sensing Is Automating  

E-Print Network [OSTI]

No Greenwashing Here: How RFID Helps the Environment 3 Powerful Examples: EV Power Station Billing, Pedal Power Line with Patron ID and Point-of-Sale Wristbands RFID and the Beverage Market (part 5) Serving Up Soft

Roussos, George

409

The World Our Grandchildren Will Inherit: The Rights Revolution and Beyond  

E-Print Network [OSTI]

Following on Keynes’s Economic Possibilities for Our Grandchildren, this paper develops conjectures about the world we will leave to our grandchildren. It starts by outlining the 10 most important trends that have defined ...

Acemoglu, Daron

2012-04-06T23:59:59.000Z

410

The Sober Revolution: The Political and Moral Economy of Alcohol in Modern France, 1954-1976  

E-Print Network [OSTI]

a broad coalition emerged to support the modern French wineroots that fixed French identity. 56 A broad consensus had

Bohling, Joseph Estle

2012-01-01T23:59:59.000Z

411

Nanotechnology Patents : The next technological revolution and the future of the patent system.  

E-Print Network [OSTI]

??Experiences from ICT and biotechnology have shown that the current patent system has increasing difficulties with the numbers and complexity of patent applications. As a… (more)

Helwegen, Wim

2013-01-01T23:59:59.000Z

412

Perceptions of Duty and Motivations for Service of American Seagoing Officers During the American Revolution  

E-Print Network [OSTI]

small ships, the brig Boston and schooner Hawk, but was roughly handled in an engagement with an inferior British warship, the twenty-gun Glasgow, as it cruised off Block Island on April 6. Although outgunned and outnumbered, Captain Tyringham Howe... Monk and 32-gun frigate Quebec, Barney directed his helmsman to obey the opposite of his orders yelled within earshot of General Monk. The ruse worked; Barney and his crew soon captured General Monk with a loss of only four men dead and eleven...

Duerksen, Benjamin

2012-07-16T23:59:59.000Z

413

The role of Methodist women workers in Mexico from 1871 to the Mexican Revolution  

E-Print Network [OSTI]

This study evaluates the entrance of Methodist women mission workers into Mexico and the work they carried out there. Until the 1870s the strength of the Roman Catholic Church in Mexico prevented Protestant entrance. The Methodist Episcopal Church...

Bond, Shelley R.

1996-01-01T23:59:59.000Z

414

Review: Solar Revolution: The Economic Transformation of the Global Energy Industry by Travis Bradford  

E-Print Network [OSTI]

for promoting solar energy and its ultimate recognition as aare renewable as well. Solar energy, one such resource, isThe Inevitability of Solar Energy," contains one chapter in

Mirza, Umar Karim

2007-01-01T23:59:59.000Z

415

E-Print Network 3.0 - african green revolution Sample Search...  

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

arrangements aimed... and technical knowledge that was not available when the Green ... Source: Kammen, Daniel M. - Renewable and Appropriate Energy Laboratory,...

416

The city design and the new Urban Revolution : conceptualizing catalytic, sustainable development in Mexico's second tier  

E-Print Network [OSTI]

What is the present role of technical change - particularly change in integrated Information-Communication Technology (ICT) - in facilitating sustainable urbanism in the developing world? Technological advancements are ...

Albericci, Allison N. (Allison Nicole)

2012-01-01T23:59:59.000Z

417

VIDEO: Celebrating Women’s Leadership in the Clean Energy Revolution  

Broader source: Energy.gov [DOE]

Watch our latest video to see highlights from the 2013 Women in Clean Energy Symposium and hear directly from attendees on its impact.

418

Exodus industrious : a new American dream for the next industrial revolution  

E-Print Network [OSTI]

Exodus Industrious has many beginnings, but few endings. Exodus Industrious is two parallel tales, told as one, which ultimately arrive at a critical moment in the history of the Americanism. Exodus is the story of capitalism ...

Marshall, Alexander William

2013-01-01T23:59:59.000Z

419

Literacy, orality annd the digital revolution: history and prospects for university undergraduate research fellows  

E-Print Network [OSTI]

and writing skills when they think of the word "literacy. " Industrialized nations often have "literacy" rates that hover above ninety percent, which would indicate that ninety percent or better of the population has a basic understanding of the written...

Cornelison, J. Garrett

2013-02-22T23:59:59.000Z

420

Joining of Advanced Materials: An The revolution which has occurred in materials science  

E-Print Network [OSTI]

science and engineering has not been matched by improve- ments in joining science and technology. 1t.materials require ever higher performance, the number of acceptable joining technologies becomes more re- stricted of the material are useless. Unless the shape and properties can be obtained economically, the product has limited

Eagar, Thomas W.

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

From green revolution to green gold: the evolution of the Indian National Mission on biodiesel   

E-Print Network [OSTI]

Biofuels have caught the attention of the world as a source of renewable energy which can provide energy security, advance rural development, mitigate climate change, and foster international trade. India developed the ...

Pradhan, Shishusri

2013-11-27T23:59:59.000Z

422

The Yellow Revolution in Malwa : alternative arenas of struggle and the cultural politics of development  

E-Print Network [OSTI]

This dissertation engages with two analytical frameworks to explore questions of social transformation and structures of power in rural society in India. The first is a specific critique of various types of development ...

Kumar, Richa, Ph. D. Massachusetts Institute of Technology

2009-01-01T23:59:59.000Z

423

Review: Solar Revolution: The Economic Transformation of the Global Energy Industry by Travis Bradford  

E-Print Network [OSTI]

are renewable as well. Solar energy, one such resource, isThe Inevitability of Solar Energy," contains one chapter inenergy system, introduces solar energy with its merits and

Mirza, Umar Karim

2007-01-01T23:59:59.000Z

424

A computer procedure for evaluating the effects of loading thin isotropic shells of revolution  

E-Print Network [OSTI]

(u' ? S sin g) = r'(H cos g + V sin ) - cNG) u C ? = N8 ? a(H cos ) + V sin $) r Mg = D MH = D cos ~go os (7) 2 v' = ? (H cos p + V sin p - cNH) - r'S C (S) wnere a prime denotes differentiation vith respect to s. These equa- tions represent "Love...)X I +(ll)X+(Z)X~I +(J) lj+(K)0 v'nere (lj), = 4a(r. I + r. I) - Br. (a + I) - 2(ds)(r. I ? r. ) (C)j = rj+I + rj, (D)i = 2(ds)(Z&+I i-I)/ (ll) = -ar - 4o(r, - 2r, + r. ) - 2(ds) (r. - r, ) I 1 i+I i i-I i+I i-I (I). = r. + 4 r. - r. i+I i i...

Petersen, Gary Stanley

1968-01-01T23:59:59.000Z

425

Nonlinear elastic analysis of arbitrarily loaded shells of revolution by the matrix displacement method  

E-Print Network [OSTI]

Meridional Stress Along Arc Length for Spherical Cap-Torus-Cylinder Configuration (Radius to Thickness Ratio of Torus = 10) Circumferential Stress Along Are Length toz Spherical Cap-Torus-Cylinder Configuration (Radius to Thickness Ratio of Torus = 10...) 9-3. Meridional Stress Along Arc Length for Spherical Cap-Torus-Cylinder Configuration (Radius to Thickness Ratio of Torus = 20) 9-6. Circumferential Stress Along Arc Length for Spherical Cap-Torus-Cylinder Configuration (Radius to Thickness...

Haisler, Walter E

1968-01-01T23:59:59.000Z

426

Dynamic alliances : political economy of labor organization in post-revolution Egypt  

E-Print Network [OSTI]

The last decade in Egypt has witnessed significant innovations in the structure of social organizations spurred by the fraying of central government legitimacy. Within this dense network of new social actors independent ...

Lopez, Sofia Alejandra

2013-01-01T23:59:59.000Z

427

A review of "Rebranding Rule: The Restoration and Revolution Monarchy, 1660-1714" by Kevin Sharpe  

E-Print Network [OSTI]

in this series, Sharpe argues that the successful fashioning of the royal image was vital to an early modern monarch’s grasp on power and authority. For Charles II, this representation of rule was trickier than for his forebears. The events of 1649 and those... that followed had profound revolutionary consequences, throwing the very meaning of kingship into question. The genie of republicanism, once released from the bottle, could never be completely put back inside. Powerful images of royal authority flourished...

Patterson, Catherine

2014-01-01T23:59:59.000Z

428

The Biofuels Revolution: Understanding the Social, Cultural and Economic Impacts of Biofuels Development on Rural Communities  

SciTech Connect (OSTI)

The aim of this research was an in-depth analysis of the impacts of biofuels industry and ethanol plants on six rural communities in the Midwestern states of Kansas and Iowa. The goal was to provide a better understanding of the social, cultural, and economic implications of biofuels development, and to contribute to more informed policy development regarding bioenergy.Specific project objectives were: 1. To understand how the growth of biofuel production has affected and will affect Midwestern farmers and rural communities in terms of economic, demographic, and socio-cultural impacts; 2. To determine how state agencies, groundwater management districts, local governments and policy makers evaluate or manage bioenergy development in relation to competing demands for economic growth, diminishing water resources, and social considerations; 3. To determine the factors that influence the water management practices of agricultural producers in Kansas and Iowa (e.g. geographic setting, water management institutions, competing water-use demands as well as producersâ?? attitudes, beliefs, and values) and how these influences relate to bioenergy feedstock production and biofuel processing; 4. To determine the relative importance of social-cultural, environmental and/or economic factors in the promotion of biofuels development and expansion in rural communities; The research objectives were met through the completion of six detailed case studies of rural communities that are current or planned locations for ethanol biorefineries. Of the six case studies, two will be conducted on rural communities in Iowa and four will be conducted on rural communities in Kansas. A â??multi-methodâ?ť or â??mixed methodâ?ť research methodology was employed for each case study.

Dr. Theresa L. Selfa; Dr. Richard Goe; Dr. Laszlo Kulcsar; Dr. Gerad Middendorf; Dr. Carmen Bain

2013-02-11T23:59:59.000Z

429

SciTech Connect: From the Building to the Grid: An Energy Revolution and  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBi (2) Sr (2) Ca (2) Cu (3) Oheavy-ionmicrofluidicModeling

430

SciTech Connect: NANOFLUIDICS REVOLUTION: PROTECTING THE WORLD ONE DROP AT  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBi (2) Sr (2) Ca (2) CuFuture U.S.Calculations(ParallelizationA

431

The causes of religious wars : holy nations, sacred spaces, and religious revolutions  

E-Print Network [OSTI]

In the wake of September 11th, policy analysts, journalists, and academics have tried to make sense of the rise of militant Islam, particularly its role as a motivating and legitimating force for violence against the US. ...

Gregg, Heather Selma, 1971-

2004-01-01T23:59:59.000Z

432

Women weaving the dream of the revolution in the American continent  

E-Print Network [OSTI]

Partidos y Sindicatos en Venezuela, 1936-1950. Centauro,en Cuadernos de Cendes, Universidad Central de Venezuela,Caracas, Venezuela, Ańo Segundo, Enero-Abril 1994, pp. 25-

Angeleri, Sandra

2006-01-01T23:59:59.000Z

433

Pennsylvania Sparks an Energy Efficiency Revolution: Weatherization Assistance Close-Up Fact Sheet  

SciTech Connect (OSTI)

Pennsylvania demonstrates its commitment to technology and efficiency through the Weatherization Program. Weatherization uses advanced technologies and techniques to reduce energy costs for low-income families by increasing the energy efficiency of their homes.

D& R International

2001-10-10T23:59:59.000Z

434

From the Building to the Grid: An Energy Revolution and Modeling Challenge  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicyFeasibilityFieldMinds"OfficeTourFrom clusters to clouds From

435

From the Building to the Grid: An Energy Revolution and Modeling Challenge: Workshop Proceedings  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicyFeasibilityFieldMinds"OfficeTourFrom clusters to clouds

436

From the Building to the Grid: an Energy Revolution and Modeling Challenge Workshop Part 1  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicyFeasibilityFieldMinds"OfficeTourFrom clusters to cloudsFrom

437

Biden Says U.S. Will Lead Energy Revolution | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' ResearchTheMarketing,Energy and NaturalBethel ValleyMembershipTheVice-President Joe

438

Gordon Bell visits Livermore, gets a look at the HPC revolution he helped  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun with Big Sky LearningGet AssistanceCatalytic Sites . |DOE L ong TAtlstart |

439

From the Building to the Grid: An Energy Revolution and Modeling Challenge: Workshop Proceedings  

Office of Scientific and Technical Information (OSTI)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinan antagonist Journal Article: Crystal structureComposite--FOR IMMEDIATEDOEFinal R eport f orFrom the

440

#CleanTechNow: America's Clean Energy Revolution | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert SouthwestTechnologies | BlandinePrinceton Plasma PhysicsLED Lights#CleanTechNow:

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

Risk Sharing and Transactions Costs: Evidence from Kenya's Mobile Money Revolution  

E-Print Network [OSTI]

We explore the impact of reduced transaction costs on risk sharing by estimating the effects of a mobile money innovation on consumption. In our panel sample, adoption of the innovation increased from 43 to 70 percent. We ...

Jack, William

442

Cyclogiro windmill  

DOE Patents [OSTI]

A cyclogiro windmill has a rotor provided with blades shaped in the configuration of symmetrical airfoils and actuators to pivot the blades about axes parallel to the axis of rotation for the rotor. The actuator for each blade constantly changes the rock angle for the blade, that is its angle with respect to a reference on the rotor, and this modulation is such that the blade in making a revolution around the axis of rotation for the rotor undergoes an interval of static operation wherein its angle of attack is for the most part constant and less than the static stall angle, a short interval where the blade flips to position in which its opposite surface is presented toward the free wind, a short interval of dynamic operation wherein the angle of attack exceeds the static stal angle, another interval of static operation at an angle of attack of essentially the same magnitude as before, another interval of blade flip, and another interval of dynamic operation. During the intervals of dynamic operation, the blades experience a significant increase in lift force without a corresponding increase in drag, so that a high lift-to-drag ratio develops. The blades during dynamic operation further develop strong vortices which are directed outwardly at the sides of the windmill stream tube, and this increases the width of the stream tube, causing a greater mass of air to flow through the rotor. The short intervals of operation under dynamic conditions enable the blades to extract more energy from the free wind than would be possible if the blade operated solely under static conditions, and this in turn renders the windmill more useful in moderate velocity winds as well as high velocity winds.

Brulle, R.V.

1981-09-03T23:59:59.000Z

443

New Scientist|Space|Technology|Environment|New Scientist Jobs|Subscribe to New Scientist New Scientist, 2578, 18 November 2006  

E-Print Network [OSTI]

revolution will be recognised as a transformation as significant as the industrial revolution. The evolution

Horvitz, Eric

444

A conservative control strategy for variable-speed stall-regulated wind turbines  

SciTech Connect (OSTI)

Simulation models of a variable-speed, fixed-pitch wind turbine were investigated to evaluate the feasibility of constraining rotor speed and power output without the benefit of active aerodynamic control devices. A strategy was postulated to control rotational speed by specifying the demanded generator torque. By controlling rotor speed in relation to wind speed, the aerodynamic power extracted by the blades from the wind was manipulated. Specifically, the blades were caused to stall in high winds. In low and moderate winds, the demanded generator torque and the resulting rotor speed were controlled to cause the wind turbine to operate near maximum efficiency. Using the developed models, simulations were conducted of operation in turbulent winds. Results indicated that rotor speed and power output were well regulated. Preliminary investigations of system dynamics showed that, compared to fixed-speed operation, variable-speed operation caused cyclic loading amplitude to be reduced for the turbine blades and low-speed shaft and slightly increased for the tower loads. This result suggests a favorable impact on fatigue life from implementation of the proposed control strategy.

Muljadi, E.; Pierce, K.; Migliore, P.

2000-02-08T23:59:59.000Z

445

Brake rotor design and comparison using finite element analysis : an investigation in topology optimization  

E-Print Network [OSTI]

An Introduction to the Conjugate Gradient Method Without thedescent method and the conjugate gradient method. The onlymethod and the conjugate gradient method can be found in

Domond, Kenneth

2010-01-01T23:59:59.000Z

446

Rotor Termination in a Patient-Specific Model of Atrial Fibrillation /  

E-Print Network [OSTI]

of atrial fibrillation termination by rapidly unbinding Na+of atrial fibrillation termination by pure sodium channelfor spontaneous termination of reentrant tachycardias.

Gonzales, Matthew James

2013-01-01T23:59:59.000Z

447

Dynamic Response of a Rotor-air Bearing System Due to Base Induced Periodic Motions  

E-Print Network [OSTI]

equipment such as turbochargers and micro gas turbine engines. For example, air flow fluctuations and landing sudden maneuver can introduce random excitations or shock to auxiliary power units for aircrafts. Diesel engine induced vibrations and road...

Niu, Yaying

2010-01-14T23:59:59.000Z

448

Co-Simulation of an Interior Permanent Magnet Synchronous Motor with Segmented Rotor Structure  

E-Print Network [OSTI]

Christoph Schulte and Joachim B¨ocker Power Electronics and Electrical Drives, Paderborn University, D-33095 Paderborn, Germany schulte@lea.upb.de, boecker@lea.upb.de Abstract--Accurate simulation of electric drives, electrical drive, multi-slice approach I. INTRODUCTION Conventionally, a two-step process is being used

Paderborn, Universität

449

E-Print Network 3.0 - active rotor-blade vibration Sample Search...  

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

Chalmers University of Technology, Sweden Collection: Fossil Fuels 66 Applications: Wind turbine structural health Summary: believe that particularly susceptible turbine...

450

Identification of force coefficients in flexible rotor-bearing systems - enhancements and further validations  

E-Print Network [OSTI]

identification of bearing force parameters, i.e. stiffness and damping coefficients, is one of the most difficult to achieve. Field identification by imbalance response measurements is a simple and often reliable way to determine synchronous speed force...

Balantrapu, Achuta Kishore Rama Krishna

2005-11-01T23:59:59.000Z

451

Magnetic Patterning of Permanent-Magnet Rotors for Microscale Motor/Generators  

E-Print Network [OSTI]

offers three advantages. First, eliminating the integrated winding permits simpler MH design element modeling 1. INTRODUCTION High power-density, microscale, axial-flux, PM machines [1-3] typically (Thickness = 0.5 mm, OD=9.5 mm) encased in a Ti adaptor used for microscale power generator [1]; (b

452

Multi-piece wind turbine rotor blades and wind turbines incorporating same  

DOE Patents [OSTI]

A multisection blade for a wind turbine includes a hub extender having a pitch bearing at one end, a skirt or fairing having a hole therethrough and configured to mount over the hub extender, and an outboard section configured to couple to the pitch bearing.

Moroz; Emilian Mieczyslaw (San Diego, CA) [San Diego, CA

2008-06-03T23:59:59.000Z

453

Experimental response of a rotor supported on Rayleigh step gas bearings  

E-Print Network [OSTI]

1 INTRODUCTION Micro-turbomachinery demands gas bearings to ensure compactness, lightweight and extreme temperature operation [1, 2]. Gas film bearings, unlike oil-lubricated bearings, offer advantages of low friction and less heat... and complex sealing and lubricant circulation systems. Furthermore, these oil-free bearing applications eliminate process fluid contamination and are environmental friendly. The main disadvantages of gas film bearings are little damping and low load...

Zhu, Xuehua

2004-11-15T23:59:59.000Z

454

Measurements of unbalance response in a squeeze film damper test rotor-kit  

E-Print Network [OSTI]

for three cases: centered journal, offcentered journal at 30% and 60% of the radial clearance. Different masses of unbalance are used for each case . All the experiments were performed at room temperature and at an oil inlet pressure of 6.9 kPa. The cascade...

Laos, Hector Emilio

1995-01-01T23:59:59.000Z

455

Rotor Termination in a Patient-Specific Model of Atrial Fibrillation /  

E-Print Network [OSTI]

and even if any oscillations in voltage are present, they doand temporal (B) oscillations in the voltage solution of aexcursion of voltage was in fact the Gibbs oscillations or

Gonzales, Matthew James

2013-01-01T23:59:59.000Z

456

The effect of imbalance distribution and measurement locations on critical speeds in a turboprop engine rotor  

E-Print Network [OSTI]

Imbalance Response at RY aud RX. imbalance Mass at tbe Coupling) 35 6 a. d 5 CL E 0 1IXXI 2000 3000 ?XXI SXm 6000 7OIXI SXXI 9000 10000111XXI12000 IXXXI1400016000 Spddd &rpm& TX 6 d N 'E 5 Ol 4 O. E 3 D 1000 2CCO 3000 4XXI SOXI 6000 7000.... 000- sa 0. 500? N "O. 00O E 0 0 Z 41 500 -' 2 4 8 10 12 14 16 18 20 24 26 Axial Location measured from the coupling (in) Figure 6. Measured Free-Free Vibration Frequency Spectrum and Mode Shape for Gas Generator Spool - 16 Maae Oot Date A CHI...

Marin, Manuel

2012-06-07T23:59:59.000Z

457

Double Side Control of Wound Rotor Induction Machine for Wind Energy Application Employing Half Controlled  

E-Print Network [OSTI]

the cost of a wind generator system, a new configuration using half controlled converters for both the required KVA rating of both machine side and line side converters, improves the efficiency of the wind generator, helps operating over a wide speed range and supports near unity power factor interface

Lipo, Thomas

458

Rotordynamic performance of a rotor supported on bump-type foil bearings: experiments and predictions  

E-Print Network [OSTI]

]. Bump foils x 25 Top foil Spot weld Bearing sleeve Journal Spot weld lines x 5 Shaft rotation Figure I-1 Schematic representation of a bump-type gas foil bearing This thesis follows the style of the Journal of Engineering for Gas Turbines... show nonlinear FB deflections, varying with the orientation of the load relative to the foil spot weld. Loading and unloading tests evidence hysteresis. The FB structural stiffness increases as the bumps-foil radial...

Rubio Tabares, Dario

2006-08-16T23:59:59.000Z

459

Computation of the National Renewable Energy Laboratory Phase-VI Rotor in Pitch Motion during Standstill  

SciTech Connect (OSTI)

Previously, computational fluid dynamics (CFD) computations of dynamic stall on wind turbine blades have been performed for stand still conditions with moderate success by among others the present authors. In the present work, numerical investigations are performed to illustrate the possibilities of state of the art CFD methods for this problem, including the numerical requirements as time-step and grid resolution. Additionally, the effect of different types of modeling is investigated, ranging from fully turbulent Reynolds-averaged Navier-Stokes (RANS), transitional RANS, to transitional delayed detached-eddy simulation computations. The investigation indicates that detailed information and fair agreement with measurements can be obtained.

Sorensen, N. N.; Schreck, S.

2012-04-01T23:59:59.000Z

460

Numerical study of a rotor/stator interaction case experimentally simulated with an industrial compressor  

E-Print Network [OSTI]

energy efficiency may be achieved by minimizing the clearance between the rotating blade tips- tion of the HR15Y hardness test on abradable material. It was shown that a bilinear plastic law could developments focused on the modeling of abradable coating through mono-dimensional plastic el- ements [10

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

On the characteristics of fault-induced rotor-dynamic bifurcations and nonlinear responses  

E-Print Network [OSTI]

and Poincare map of the response in (a) .........41 3.4 (a) Time history of a nonlinear time-delay model. (b) Corresponding phase portrait and Poincare map of the response in (a) .........42 3.5 Phase portrait and Poincare map of a fractal... reaction forces, which in turn could result in strong nonlinear responses including period-doubling bifurcation, quasi-periodic bifurcation, and even chaotic response [4,5]. Nonlinear dynamical states of quasi-periodic, fractal, and chaotic motions...

Yang, Baozhong

2004-11-15T23:59:59.000Z

462

Inlet swirl distortion effects on the generation and propagation of fan rotor shock noise  

E-Print Network [OSTI]

A body-force-based fan model for the prediction of multiple-pure-tone noise generation is developed in this thesis. The model eliminates the need for a full-wheel, three-dimensional unsteady RANS simulation of the fan blade ...

Defoe, Jeff (Jeffrey James)

2011-01-01T23:59:59.000Z

463

Turning Waste Heat into Power: Ener-G-Rotors and the Entrepreneurial  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage »of EnergyThe EnergyDepartment7DepartmentEnergy

464

What Stator Current Processing Based Technique to Use for Induction Motor Rotor Faults Diagnosis?  

E-Print Network [OSTI]

drives in central power plants of power systems, as well as restricted role in low MVA power supply systems as induction generators, mining industries, petrochemical industries, as well as in aerospace

Paris-Sud XI, Université de

465

Imbalance response of a rotor supported on a floating ring fluid film bearing  

E-Print Network [OSTI]

running speed (10,000 rpm). The system non linearity is evidenced by two self-excited subsynchronous vibration components identified from the experiments. The first subsynchronous component is associated with the instability of the inner film...

Naranjo, Julio Enrique

1999-01-01T23:59:59.000Z

466

The effects of torsional-lateral coupling on the dynamics of a gear coupled rotor  

E-Print Network [OSTI]

Mass of Gear 2 Mass Moment of Inertia of Gear 1 m m J 2 Mass Moment of Inertia of Gear 2 Equivalent Tooth Stiffness... to Gear Running Speed ..........................................65 Nonsynchronous Vibrations and the Wachel Paper..............................................70 The Rotating Moment Arm?s Effect on System Vibration ...................................73...

Emery, Michael Aaron

2007-04-25T23:59:59.000Z

467

A tilt rotor UAV for long endurance operations in remote environments  

E-Print Network [OSTI]

Extended mission times will greatly expand the utility of small UAVs that are currently limited to a single flight lasting no more than a few hours. This thesis assesses the challenges to developing a small, long endurance ...

VanderMey, Josiah T

2011-01-01T23:59:59.000Z

468

COE Reductions through Active Aerodynamic Control of Rotor Aerodynamics and Geometry  

SciTech Connect (OSTI)

This study investigates potential cost of energy reductions that might be achieved by designing active systems to mitigate loads throughout the wind turbine system.

Griffin, D. A.; McCoy, T. J.

2008-12-01T23:59:59.000Z

469

Gibbsianness versus Non-Gibbsianness of time-evolved planar rotor models  

E-Print Network [OSTI]

enough. Le Ny and Redig generalized in [LeNRed02] the result for small times t to more general dynamics

470

Sandia National Laboratories: Offshore Wind RD&D: Large Offshore Rotor  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt StorageNo MoreMagneticallyElectronOffshore

471

Sandia National Laboratories: The Influence of Rotor Blade Design on Wake  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErikGroundbreakingStandardsTCES Sandia ResearchersDevelopment

472

SMART Wind Turbine Rotor: Design and Field Test | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l LPROJECTS IN7 Roadmap forDKT.Awards and IncentivesSHARPofofSMARTDesign

473

Sandia National Laboratories: New Facility Tool at SWiFT Makes Rotor Work  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive SolarEducationStationCSP Resources On September 26, 2012,More Efficient

474

LARGE EDDY SIMULATION AND MEASUREMENTS IN A TURBULENT ROTOR-STATOR FLOW  

E-Print Network [OSTI]

). The flow has significant industrial applications, such as internal gas- turbine flows and computer hard model is based on Spectral Vanishing Viscosity (SVV). The key particularity of this model

Paris-Sud XI, Université de

475

Magnetic Lossess Simulation in PM SM Drive by FE: Harmonic Superposition by Method of Locked Rotor  

E-Print Network [OSTI]

Permanent magnet synchronous machine (PMSM), with its simplicity, high efficiency even at low speeds, strong

Paris-Sud XI, Université de

476

Passivity-based control of a wound-rotor synchronous Arnau D`oria-Cerezoa  

E-Print Network [OSTI]

of using a WRSM in front of the permanent magnet synchronous motor (PMSM), is the ability to compensate

Batlle, Carles

477

Enertech 2-kW high-reliability wind system. Phase II. Fabrication and testing  

SciTech Connect (OSTI)

A high-reliability wind machine rated for 2 kW in a 9 m/s wind has been developed. Activities are summarized that are centered on the fabrication and testing of prototypes of the wind machine. The test results verified that the wind machine met the power output specification and that the variable-pitch rotor effectively controlled the rotor speed for wind speeds up to 50 mph. Three prototypes of the wind machine were shipped to the Rocky Flats test center in September through November of 1979. Work was also performed to reduce the start-up wind speed. The start-up wind speed to the Enertech facility has been reduced to 4.5 m/s.

Cordes, J A; Johnson, B A

1981-06-01T23:59:59.000Z

478

Supersonic gas compressor  

DOE Patents [OSTI]

A gas compressor based on the use of a driven rotor having a compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which compresses inlet gas against a stationary sidewall. In using this method to compress inlet gas, the supersonic compressor efficiently achieves high compression ratios while utilizing a compact, stabilized gasdynamic flow path. Operated at supersonic speeds, the inlet stabilizes an oblique/normal shock system in the gasdyanamic flow path formed between the rim of the rotor, the strakes, and a stationary external housing. Part load efficiency is enhanced by the use of a pre-swirl compressor, and using a bypass stream to bleed a portion of the intermediate pressure gas after passing through the pre-swirl compressor back to the inlet of the pre-swirl compressor. Inlet guide vanes to the compression ramp enhance overall efficiency.

Lawlor, Shawn P. (Bellevue, WA); Novaresi, Mark A. (San Diego, CA); Cornelius, Charles C. (Kirkland, WA)

2007-11-13T23:59:59.000Z

479

Gas turbine power plant with supersonic shock compression ramps  

DOE Patents [OSTI]

A gas turbine engine. The engine is based on the use of a gas turbine driven rotor having a compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which compresses inlet gas against a stationary sidewall. The supersonic compressor efficiently achieves high compression ratios while utilizing a compact, stabilized gasdynamic flow path. Operated at supersonic speeds, the inlet stabilizes an oblique/normal shock system in the gasdynamic flow path formed between the rim of the rotor, the strakes, and a stationary external housing. Part load efficiency is enhanced by use of a lean pre-mix system, a pre-swirl compressor, and a bypass stream to bleed a portion of the gas after passing through the pre-swirl compressor to the combustion gas outlet. Use of a stationary low NOx combustor provides excellent emissions results.

Lawlor, Shawn P. (Bellevue, WA); Novaresi, Mark A. (San Diego, CA); Cornelius, Charles C. (Kirkland, WA)

2008-10-14T23:59:59.000Z

480

Detailed design, fabrication and testing of an engineering prototype compensated pulsed alternator. Final report  

SciTech Connect (OSTI)

The design, fabrication, and test results of a prototype compensated pulsed alternator are discussed. The prototype compulsator is a vertical shaft single phase alternator with a rotating armature and salient pole stator. The machine is designed for low rep rate pulsed duty and is sized to drive a modified 10 cm Beta amplifier. The load consists of sixteen 15 mm x 20 mm x 112 cm long xenon flashlamps connected in parallel. The prototype compulsator generates an open circuit voltage of 6 kV, 180 Hz, at a maximum design speed of 5400 rpm. At maximum speed, the inertial energy stored in the compulsator rotor is 3.4 megajoules.

Bird, W.L. Jr.; Woodson, H.H.

1980-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "rotor speed-the revolutions" 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

The lost revolution : capitalism, democracy and black citizenship in early twentieth-century America's biggest race conflicts  

E-Print Network [OSTI]

This new racial conflict over the future of blacks' social, political and economic self determination became an inescapable "trial by fire" for American democracy. Throughout the United States, W.E.B. Du Bois' "New Negroes," ...

Butler, Katonio A. (Katonio Arthella)

2007-01-01T23:59:59.000Z

482

The Homeowner Revolution: Democracy, Land Use and the Los Angeles Slow-Growth Movement, 1965-1992  

E-Print Network [OSTI]

Architecture) ACADEMIC APPOINTMENTS University of California, Los Angeles Fellow, Institute of the Environment & Sustainability

Morrow, Gregory D.

2013-01-01T23:59:59.000Z

483

A bibliography of the Frank E. Melvin collection of pamphlets of the French Revolution in the University of Kansas Libraries  

E-Print Network [OSTI]

présidens & commissaires de l'assemblée des citoyens catholiques de la ville de Nismes. n.p., 1790. 8pp. 10. A messieurs les représentans de la nation française. Paris: Chalon, 1790. 16pp. Letters explaining the difficulties of a M. de Mattei, "curé de... St. Nicolas de la ville de Montreau." 11. A monseigneur le comte de Caraman, observations sur la milice cito yenne de Marseille, plan de réforme & de conciliation, nécessité de l'union & de la paix, n.p., [1789]. 24pp. Recommendations for reform...

Saricks, Ambrose

1960-01-01T23:59:59.000Z

484

Mexican Provincial Society during the Age of Revolution: A Social and Economic History of Toluca, 1790-1834  

E-Print Network [OSTI]

Rosaura. Toluca 1603: Vista de ojos. Zinacantepec, México:Rodríguez, Toluca, 1603: vista de ojos (Zinacantepec,in Selected Sources, 1603-1834 .. 205!

Mairot, Mark

2013-01-01T23:59:59.000Z

485

History of AUV's Hull shape Typically, hull shape is based on a body of revolution with a rounded bow,  

E-Print Network [OSTI]

for calculating laminar/turbulent boundary layer thickness and for transition prediction. · To study of how and the results of transition point (xtran) and drag cofficient (CDA) at Re = 5�107 picture from Zedan (1978 techniques or the designer's experience. · The computer CFD software simulation is the main design tool

Sóbester, András

486

A review of "The Cambridge Companion to Writing of the English Revolution." by N. H. Keeble, ed.  

E-Print Network [OSTI]

of studies of either Milton or Marvell, it is mystifying that the editor chose to classify either author as a ?radical? voice. Equally problematic is the equation of ?conservative voices? with royalism. Alan Rudrum considers the variety of lyric poetry... weak. Isabel Rivers? analysis of ?prayer-book devotion? introduces not just the Eikon Basilike, but also the works of less famous interregnum An- glicans, such as Anthony Sparrow and James Harwood. Paul Salzman?s chapter on the ?royalist epic...

Jason Peacey

2003-01-01T23:59:59.000Z

487

The Homeowner Revolution: Democracy, Land Use and the Los Angeles Slow-Growth Movement, 1965-1992  

E-Print Network [OSTI]

Sustainability Special Reader and Teaching Assistant, Department of Urban Planning Occidental College

Morrow, Gregory D.

2013-01-01T23:59:59.000Z

488

The Credibility Revolution in Empirical Economics: How Better Research Design is Taking the Con out of Econometrics  

E-Print Network [OSTI]

Just over a quarter century ago, Edward Leamer (1983) reflected on the state of empirical work in economics. He urged empirical researchers to “take the con out of econometrics” and memorably observed (p. 37): “Hardly ...

Angrist, Joshua

2010-01-01T23:59:59.000Z

489

Abstract--A classification of a family of 3-revolute (3R) positining manipulators is established. This classification is based  

E-Print Network [OSTI]

and nodes that appear on these singular curves. The design parameters space is shown to be divided into nine be used as such for positioning tasks in the Cartesian space or as the regional structure of a 6R on alternative manipulator designs, namely, positioning 3R manipulators with orthogonal joint axes (orthogonal

Boyer, Edmond

490

The atmosphere complex... or simple? Spurred on by the revolution in computer technology and a growing focus on  

E-Print Network [OSTI]

in atmospheric science. It is ironic that thanks to his pioneering book "Weather prediction by numerical process" in 1922, Richardson is much better known as the father of numerical weather prediction than? The surprising answer appears to be both: a recent study of the outputs of numerical weather models shows

Lovejoy, Shaun

491

The Homeowner Revolution: Democracy, Land Use and the Los Angeles Slow-Growth Movement, 1965-1992  

E-Print Network [OSTI]

Valley, along with incumbent 517,000, and Planning Chief Roberts estimated that the area farmers, were not at all happy

Morrow, Gregory D.

2013-01-01T23:59:59.000Z

492

The Homeowner Revolution: Democracy, Land Use and the Los Angeles Slow-Growth Movement, 1965-1992  

E-Print Network [OSTI]

Newman, Peter, Timothy Beatley, and Heather Boyer. Resilient55. Peter Newman, Timothy Beatley, and Heather Boyer, “Hope

Morrow, Gregory D.

2013-01-01T23:59:59.000Z

493

International Class Conflict: A Study of Nicaraguan Domestic Policy and United States Foreign Policy Related to the Counter-Revolution  

E-Print Network [OSTI]

This thesis examines historical events which led to the direct and indirect involvement of United States government and industry resources in attempts to influence the political and economic structures of the Central ...

Fullerton, John Daniel

1997-01-01T23:59:59.000Z

494

The Homeowner Revolution: Democracy, Land Use and the Los Angeles Slow-Growth Movement, 1965-1992  

E-Print Network [OSTI]

into the Inglewood Oilfield, an environmental would beginnot surprisingly – held that oilfield operations were not aSurvey documented that oilfield operations had the Yellow

Morrow, Gregory D.

2013-01-01T23:59:59.000Z

495

The location of two-hand trip devices on full revolution mechanical power presses with regard to operator safety  

E-Print Network [OSTI]

Accident Data Fundamentals of Operator Response. 38 Response Initiation Time. Factors Affecting RIT. Sense modality. Stimulus intensity. Age and sex. . . . . . . . ~ . . . . . . . Other factors affecting RIT ~ . . Movement Time. Primary Movement... Time. TABLE OF CONTENTS CONTINUED LITERATURE REVIEW (Continued) Secondary-Movement Time Factors Affecting MT Page Sex Preparatory set Direction of movement Other factors affecting MT' An Accident Case History The Problem. The Research...

Masters, Randall Wayne

1973-01-01T23:59:59.000Z

496

F. Willoughby Smith and the development of American policy toward the Bolshevik Revolution, 7 November - 12 December, 1917  

E-Print Network [OSTI]

because of his upbringing he was adamantly opposed to the Bolsheviks and everything for which they stood. His consular dispatches to the Department of State advo- cated taking a strong stance toward the Bolsheviks while, at the same time, financially.... 8; Timothy C. Smith, U. S. consul at Odessa, to Secretary of State Wil liam H. Seward, Odessa, 3 September 1867, Dispatches from U. S. Consul s in Odessa, 1834-1906, M459, DSNAM. 23 and that "the future development of the vast resources...

Hammond, Terry Wayne

1986-01-01T23:59:59.000Z

497

A New Biology for the 21st Century; Ensuring the United States Leads the Coming Biology Revolution  

SciTech Connect (OSTI)

In July, 2008, the National Institutes of Health (NIH), National Science Foundation (NSF), and Department of Energy (DOE) asked the National Research Council’s Board on Life Sciences to convene a committee to examine the current state of biological research in the United States and recommend how best to capitalize on recent technological and scientific advances that have allowed biologists to integrate biological research findings, collect and interpret vastly increased amounts of data, and predict the behavior of complex biological systems. From September 2008 through July of 2009, a committee of 16 experts from the fields of biology, engineering and computational science undertook to delineate those scientific and technological advances and come to a consensus on how the U.S. might best capitalize on them. This report, authored by the Committee on a New Biology for the 21st Century, describes the committee’s work and conclusions.

Committee on a New Biology for the 21st Century; Ensuring the United States Leads the Coming Biology Revolution; National Research Council

2012-05-10T23:59:59.000Z

498

The Laird’s Houses of Scotland: From the Reformation to the Industrial Revolution, 1560–1770   

E-Print Network [OSTI]

The purpose of this research is to define the architectural development of laird’s houses. The term ‘laird’s house’ can imply, simply, ‘the house of a laird’. Architecturally, it is used to describe a category of dwelling ...

Strachan, Sabina Ross

499

(Digital) Revolution Girl Style Now!: Subcultures, Social Media, Subjectivity and the Videos of Sadie Benning and Thirza Cuthand  

E-Print Network [OSTI]

Thirza Cuthand and other video artists to take a flyer fromMedia, Subjectivity & the Videos of Sadie Benning and Thirzathe experimental autobiographic videos of Sadie Benning and

Royer, Alice

2012-01-01T23:59:59.000Z

500

A review of "The English Atlantic in an Age of Revolution, 1640-1661." by Carla Gardina Pestana  

E-Print Network [OSTI]

of the seven- teenth century. By emphasizing that the Interregnum government was far more imperially ambitious than that of the early Stuarts, Pestana?s research has important implications for scholars who specialize in the history of either colonial America... the Atlantic. The Navigation Act of 1651 and the campaign launched in 1654 against the Spanish West Indies reflected the imperial ambitions of the English government, which proved itself far more willing to direct colonial affairs than had been Charles I...

Ward, Joseph P.

2006-01-01T23:59:59.000Z