Sample records for deutsche rotor und

  1. Deutsche Rotor und Turm Service GmbH Co KG DRTS | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A Potential Microhydro SiteDaytonDestilaria de Alcool Libra

  2. Wissenschaftlicher Jahresbericht Deutsches Elektronen-Synchrotron

    E-Print Network [OSTI]

    Wissenschaftlicher Jahresbericht 2002 Deutsches Elektronen-Synchrotron DESY Inhalt Vorspann 5 Deutsche Elektronen-Synchrotron DESY ist ei- nes von 15 Mitgliedern in der Helmholtz-Gemeinschaft Deutscher sich BESSY, das Max-Born-Institut Berlin und die TU-Darmstadt an PITZ. Vom 15.01. bis zum 17

  3. Organigramm 12 Organe der Stiftung und weitere Gremien 13

    E-Print Network [OSTI]

    Nationale und Internationale Zusammenarbeit 19 5 #12;6 #12;Vorwort Vorwort Das Deutsche Elektronen-Synchrotron sich BESSY, das Max-Born-Institut Berlin und die TU-Darmstadt an PITZ. Vom 15.01. bis zum 17

  4. Das Deutsche Elektronen-Synchrotron DESY ist ei-nes von 15 Mitgliedern in der Helmholtz-Gemeinschaft

    E-Print Network [OSTI]

    Vorwort Vorwort Das Deutsche Elektronen-Synchrotron DESY ist ei- nes von 15 Mitgliedern in der benötigt werden. Neben DESY beteiligen sich BESSY, das Max-Born-Institut Berlin und die TU

  5. Separators for flywheel rotors

    DOE Patents [OSTI]

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

    1998-07-07T23:59:59.000Z

    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.

  6. Separators for flywheel rotors

    DOE Patents [OSTI]

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

    1998-01-01T23:59:59.000Z

    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.

  7. Sandia Energy - SMART Rotor Video

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

    SMART Rotor Video Home Stationary Power Energy Conversion Efficiency Wind Energy Resources Wind Energy Publications Online Abstracts and Reports SMART Rotor Video SMART Rotor...

  8. Polymers in a Vacuum J. M. Deutsch

    E-Print Network [OSTI]

    Deutsch, Josh

    Polymers in a Vacuum J. M. Deutsch Department of Physics, University of California, Santa Cruz polymer molecules are found in a vacuum, and here we examine their properties. Angular momentum The properties of polymer chains have been investigated extensively over the past 50 years [1], but the vast

  9. Deutsch's Universal Quantum Turing Machine (Revisited)

    E-Print Network [OSTI]

    Willem Fouché; Johannes Heidema; Glyn Jones; Petrus H. Potgieter

    2007-01-16T23:59:59.000Z

    Deutsch, Feynman, and Manin viewed quantum computing as a kind of universal physical simulation procedure. Much of the writing about quantum Turing machines has shown how these machines can simulate an arbitrary unitary transformation on a finite number of qubits. This interesting problem has been addressed most famously in a paper by Deutsch, and later by Bernstein and Vazirani. Quantum Turing machines form a class closely related to deterministic and probabilistic Turing machines and one might hope to find a universal machine in this class. A universal machine is the basis of a notion of programmability. The extent to which universality has in fact been established by the pioneers in the field is examined and a key notion in theoretical computer science (universality) is scrutinised. In a forthcoming paper, the authors will also consider universality in the quantum gate model.

  10. Das Mitteilungsblatt erscheint jeweils am 1. und 3. Mittwoch jeden Monats. Eigentmer, Herausgeber, Vervielfltigung und Vertrieb: Universittsdirektion der Universitt Innsbruck, Innrain 52, A-6020

    E-Print Network [OSTI]

    Breu, Ruth

    . Stück 291. Reform des Studienplans der Studienrichtung Geschichte an der Karl-Franzens- Universität Graz ­ Anhörungsverfahren gem. § 12 Abs. 2 UniStG 292. Reform der Studienpläne für die Lehramtsfächer Deutsch, Englisch. Reform des Studienplans der Studienrichtung Wirtschaftsingenieurwesen -Technische Chemie und Technische

  11. Single Rotor Turbine

    DOE Patents [OSTI]

    Platts, David A. (Los Alamos, NM)

    2004-10-26T23:59:59.000Z

    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.

  12. Deutsches Windenergie Institut | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision hasda62829c05bGabbs ValleyWindEnergyEnergyDeutsches

  13. Single rotor turbine engine

    DOE Patents [OSTI]

    Platts, David A. (Los Alamos, NM)

    2002-01-01T23:59:59.000Z

    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.

  14. Polygonal shaft hole rotor

    DOE Patents [OSTI]

    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

    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.

  15. Homopolar motor with dual rotors

    DOE Patents [OSTI]

    Hsu, J.S.

    1998-12-01T23:59:59.000Z

    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.

  16. 28. Jahrgang Juli Juristen lehren deutsches Recht in Moskau 3

    E-Print Network [OSTI]

    Schubart, Christoph

    , Personalvorstand der E.ON Bayern AG; und Michael Rehm, Partner Accenture; gratulierten der Rektor der Universität

  17. 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...

  18. Sandia Energy - 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol Home Distribution GridDocuments Home Stationary PowerResearchRiskRotor

  19. Deutsche Telekom and Cinterion Wireless Modules become M2M partners Dec 04, 2009

    E-Print Network [OSTI]

    Deutschmann, Rainer

    modules, have forged a strategic partnership. The cooperation focuses on the joint management of M2M in Deutsche Telekom's international M2M- strategy", says Rainer Deutschmann, Senior Vice President Mobile and technology. About Deutsche Telekom AG Deutsche Telekom is one of the world's leading integrated

  20. Gas turbine rotor straightening -- Case history

    SciTech Connect (OSTI)

    Mazur, Z.; Kubiak, J. [Inst. de Investigaciones Electricas, Temixco (Mexico); Villela, A.; Orozco, J. [Comision Federal de Electricidad, Mexicali (Mexico)

    1999-11-01T23:59:59.000Z

    Due to catastrophic damage, the turbine-compressor rotor of a gas turbine has been bent 0.62 mm. The in-situ repair process of rotor straightening is fully described. The repair process included the design of special fixtures for placing the rotor vertically and then hydraulically tensioning the rotor bolts for discs disassembling and run-out check by a special rotary equipment. After the repair process the rotor run-out fell within the design limits. Finally the rotor was put back into service. The approach to the in-house repair of the rotor bend has been successful and can be widely recommended for users of turbomachinery.

  1. Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron

    E-Print Network [OSTI]

    Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron A Research Centre DESY DESY is one of the world's leading research centres for photon science, particle and astroparticle with universities. The DESY focus is on conventional and plasma-based accele- rators with applications in photon

  2. Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron

    E-Print Network [OSTI]

    Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron A Research Centre/m) Accelerator Research DESY DESY is one of the world's leading research centres for photon science, particle with universities. The DESY focus is on conventional and plasma-based accele- rators with applications in photon

  3. Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron

    E-Print Network [OSTI]

    Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron A Research Centre and astroparticle physics as well as accelerator physics. The theoretical astroparticle physics group at DESY has processes Requirements · Ph.D. in physics or astronomy · Experience with modeling of particle acceleration

  4. Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron

    E-Print Network [OSTI]

    Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron A Research Centre develops, builds and operates large accelerator facilities for photon science and particle physics of the Helmholtz Association ASTROPARTICLE PHYSICS· DESY, Zeuthen location, is seeking: Scientist (f/m) DESY DESY

  5. Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron

    E-Print Network [OSTI]

    Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron A Research Centre as accelerator physics. DESY develops, runs and uses accelerators and detectors for the investigati of the Helmholtz Association PARTICLE PHYSICS· DESY has openings for: DESY-Fellowships (f/m) DESY DESY is one

  6. Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron

    E-Print Network [OSTI]

    Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron A Research Centre of the Helmholtz Association ACCELERATOR PHYSICS· DESY, Hamburg location, is seeking: Scientist (f/m) (tenure and astroparticle physics as well as accelerator physics. DESY operates the world's brightest storage-ring-based X

  7. Optical Antennas Palash Bharadwaj, Bradley Deutsch, and Lukas Novotny*

    E-Print Network [OSTI]

    Novotny, Lukas

    Optical Antennas Palash Bharadwaj, Bradley Deutsch, and Lukas Novotny* Institute of Optics author: www.nano-optics.org Received March 12, 2009; revised July 4, 2009; accepted July 8, 2009; posted July 9, 2009 (Doc. ID 108726); published August 11, 2009 (Doc. ID 108726) Optical antennas

  8. Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron

    E-Print Network [OSTI]

    Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron A Research Centre of the Helmholtz Association PARTICLE PHYSICS· DESY has openings for: DESY-Fellowships (f/m) DESY DESY is one of the world's leading research centres for photon science, particle and astroparticle physics as well

  9. Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron

    E-Print Network [OSTI]

    Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron A Research CentreD-Students (f/m) DESY DESY is one of the world's leading research centres for photon science, particle and astroparticle physics as well as accelerator physics. The Photo Injector Test Facility PITZ in Zeuthen (near

  10. Wind turbine rotor aileron

    DOE Patents [OSTI]

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

    1994-06-14T23:59:59.000Z

    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.

  11. Rotor component displacement measurement system

    DOE Patents [OSTI]

    Mercer, Gary D.; Li, Ming C.; Baum, Charles R.

    2003-05-27T23:59:59.000Z

    A measuring system for measuring axial displacement of a tube relative to an axially stationary component in a rotating rotor assembly includes at least one displacement sensor adapted to be located normal to a longitudinal axis of the tube; an insulated cable system adapted for passage through the rotor assembly; a rotatable proximitor module located axially beyond the rotor assembly to which the cables are connected; and a telemetry system operatively connected to the proximitor module for sampling signals from the proximitor module and forwarding data to a ground station.

  12. Rotor assembly and assay method

    DOE Patents [OSTI]

    Burtis, Carl A. (Oak Ridge, TN); Johnson, Wayne F. (Loudon, TN); Walker, William A. (Knoxville, TN)

    1993-01-01T23:59:59.000Z

    A rotor assembly for carrying out an assay includes a rotor body which is rotatable about an axis of rotation, and has a central chamber and first, second, third, fourth, fifth, and sixth chambers which are in communication with and radiate from the central chamber. The rotor assembly further includes a shuttle which is movable through the central chamber and insertable into any of the chambers, the shuttle including a reaction cup carrying an immobilized antigen or an antibody for transport among the chambers. A method for carrying out an assay using the rotor assembly includes moving the reaction cup among the six chambers by passing the cup through the central chamber between centrifugation steps in order to perform the steps of: separating plasma from blood cells, binding plasma antibody or antigen, washing, drying, binding enzyme conjugate, reacting with enzyme substrate and optically comparing the resulting reaction product with unreacted enzyme substrate solution. The movement of the reaction cup can be provided by attaching a magnet to the reaction cup and supplying a moving magnetic field to the rotor.

  13. Rotor assembly and assay method

    DOE Patents [OSTI]

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

    1993-09-07T23:59:59.000Z

    A rotor assembly for carrying out an assay includes a rotor body which is rotatable about an axis of rotation, and has a central chamber and first, second, third, fourth, fifth, and sixth chambers which are in communication with and radiate from the central chamber. The rotor assembly further includes a shuttle which is movable through the central chamber and insertable into any of the chambers, the shuttle including a reaction cup carrying an immobilized antigen or an antibody for transport among the chambers. A method for carrying out an assay using the rotor assembly includes moving the reaction cup among the six chambers by passing the cup through the central chamber between centrifugation steps in order to perform the steps of: separating plasma from blood cells, binding plasma antibody or antigen, washing, drying, binding enzyme conjugate, reacting with enzyme substrate and optically comparing the resulting reaction product with unreacted enzyme substrate solution. The movement of the reaction cup can be provided by attaching a magnet to the reaction cup and supplying a moving magnetic field to the rotor. 34 figures.

  14. A reduced Blade-Vortex Interaction rotor

    E-Print Network [OSTI]

    Mani, Somnath

    1996-01-01T23:59:59.000Z

    This research work aims at mapping the BVI azimuthal locations using a model rotor. A model rotor was first developed. An experimental investigation was then carried out to determine the possible BVI locations. The results of the mapping...

  15. Sandia National Laboratories: National Rotor Testbed

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

    Energy, SWIFT, Systems Analysis, Wind Energy The National Rotor Testbed (NRT) team is examining the effect of airfoil choice on the final design of the new rotor for the Scaled...

  16. Mein Auslandssemester in England Nachdem die ganzen Formalitten erledigt waren, und ich dachte immer die Deutsche

    E-Print Network [OSTI]

    Greifswald, Ernst-Moritz-Arndt-Universität

    Zeit mit der Metro (dem stadteigenen U-Bahnnetz) fahren kann, bekommt man die besten Fish and Chips der

  17. Turbomachine rotor with improved cooling

    DOE Patents [OSTI]

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

    1998-05-26T23:59:59.000Z

    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.

  18. Turbomachine rotor with improved cooling

    DOE Patents [OSTI]

    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

    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.

  19. Märchen und Apokalypse

    E-Print Network [OSTI]

    Clement, Christian

    2011-01-01T23:59:59.000Z

    Apokalyptik gelten kann, so tritt eine tiefgreifende innereund Natürlichen hinter sich und tritt in eine Sphäre des

  20. Rotor blades for turbine engines

    DOE Patents [OSTI]

    Piersall, Matthew R; Potter, Brian D

    2013-02-12T23:59:59.000Z

    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.

  1. Sandia National Laboratories: functional rotor scaling

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

    Aeronautics and Astronautics (AIAA) SciTechAmerican Society of Mechanical Engineers Wind Energy Symposium titled, "Definition of the National Rotor Testbed: An Aeroelastically...

  2. Method for manufacturing a rotor having superconducting coils

    DOE Patents [OSTI]

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

    2001-01-01T23:59:59.000Z

    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.

  3. Sandia National Laboratories: wind-turbine rotor design

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

    wind-turbine rotor design National Rotor Testbed Functional Scaling Presented at American Institute of Aeronautics and Astronautics 2014 Scitech On April 15, 2014, in Energy,...

  4. 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...

  5. Wissenschaftliches Netzwerk Sozialfrsorge und Gesundheit in Ost-und Sdosteuropa

    E-Print Network [OSTI]

    Schubart, Christoph

    , Forschungsassistentin Universität Wien / Österreich und Oberassistentin Andrássy Universität Budapest / Ungarn · Dr

  6. Optimum balancing for flexible rotor

    E-Print Network [OSTI]

    Fu, Her James

    1975-01-01T23:59:59.000Z

    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...

  7. Multiple piece turbine rotor blade

    DOE Patents [OSTI]

    Jones, Russell B; Fedock, John A

    2013-05-21T23:59:59.000Z

    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.

  8. Radial-radial single rotor turbine

    DOE Patents [OSTI]

    Platts, David A. (Los Alamos, NM)

    2006-05-16T23:59:59.000Z

    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.

  9. Substantially parallel flux uncluttered rotor machines

    DOE Patents [OSTI]

    Hsu, John S.

    2012-12-11T23:59:59.000Z

    A permanent magnet-less and brushless synchronous system includes a stator that generates a magnetic rotating field when sourced by polyphase alternating currents. An uncluttered rotor is positioned within the magnetic rotating field and is spaced apart from the stator. An excitation core is spaced apart from the stator and the uncluttered rotor and magnetically couples the uncluttered rotor. The brushless excitation source generates a magnet torque by inducing magnetic poles near an outer peripheral surface of the uncluttered rotor, and the stator currents also generate a reluctance torque by a reaction of the difference between the direct and quadrature magnetic paths of the uncluttered rotor. The system can be used either as a motor or a generator

  10. Vacuum coupling of rotating superconducting rotor

    DOE Patents [OSTI]

    Shoykhet, Boris A.; Zhang, Burt Xudong; Driscoll, David Infante

    2003-12-02T23:59:59.000Z

    A rotating coupling allows a vacuum chamber in the rotor of a superconducting electric motor to be continually pumped out. The coupling consists of at least two concentric portions, one of which is allowed to rotate and the other of which is stationary. The coupling is located on the non-drive end of the rotor and is connected to a coolant supply and a vacuum pump. The coupling is smaller in diameter than the shaft of the rotor so that the shaft can be increased in diameter without having to increase the size of the vacuum seal.

  11. Wind turbine rotor hub and teeter joint

    DOE Patents [OSTI]

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

    1994-10-11T23:59:59.000Z

    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.

  12. Interlayer toughening of fiber composite flywheel rotors

    DOE Patents [OSTI]

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

    1998-07-14T23:59:59.000Z

    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.

  13. Interlayer toughening of fiber composite flywheel rotors

    DOE Patents [OSTI]

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

    1998-01-01T23:59:59.000Z

    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.

  14. A carbon nanotube bearing and Stodola rotor

    E-Print Network [OSTI]

    Cook, Eugene Hightower

    2008-01-01T23:59:59.000Z

    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 ...

  15. Sandia National Laboratories: rotor structural verification

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

    Renewable Energy, SWIFT, Wind Energy Rotor fixation stands, one for each Scaled Wind Farm Technology (SWiFT) facility turbine, have been built. The stands will be used to...

  16. Musik mit Bremstrommel und Mnzen im Klavier Gttingen. Pfeifgerusche, das

    E-Print Network [OSTI]

    Wardetzky, Max

    (,,Heul doch") und James Brown, Björn hört Apollo 3, und Jasmin und Svenja haben ein Faible für Lady Gaga. bar Lafee und Lady Gaga Svenja Björn Jasmin G

  17. 17.45 Uhr 18.30 Uhr Theaterstck ,,Du bist was Besonderes"

    E-Print Network [OSTI]

    Stein, Oliver

    Sprachen. Wir hören Orsolya Kalász (*1964), die in Ungarn geboren wurde und auf Deutsch und Ungarisch

  18. TUM Berufungs-und Karrieresystem

    E-Print Network [OSTI]

    Heiz, Ulrich

    folgende Statut zum Qualitätsmanagement des neu- en TUM Berufungs- und Karrieresystems tritt mit Wirkung

  19. The cost of noise reduction in commercial tilt rotor aircraft

    E-Print Network [OSTI]

    Faulkner, Henry B.

    1974-01-01T23:59:59.000Z

    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 ...

  20. 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:...

  1. 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:...

  2. 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:...

  3. 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:...

  4. 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:...

  5. 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:...

  6. 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:...

  7. 8 2. Helium und Tritium in der Geosphre 2. Helium und Tritium in der Geosphre

    E-Print Network [OSTI]

    Aeschbach-Hertig, Werner

    8 2. Helium und Tritium in der Geosphäre 2. Helium und Tritium in der Geosphäre 2.1. Spezielle Einheiten und Konstanten An dieser Stelle sollen die speziellen für Helium und Tritium verwendeten Einheiten definiert und dazugehörige Umrechnungen angegeben werden. Die Wahl der Werte einiger für Helium und Tritium

  8. Variable diameter wind turbine rotor blades

    DOE Patents [OSTI]

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

    2005-12-06T23:59:59.000Z

    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.

  9. Aeroelastic analysis of a helicopter rotor

    E-Print Network [OSTI]

    McQuien, Larry Jay

    1977-01-01T23:59:59.000Z

    AEROELASTIC ANALYSIS OF A HELICOPTER ROTOR A Thesis by LARRY JAY NcQUIEN Submitted to the Graduate College of Texas A&'N University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1977 Major Subject...: Aerospace Engineering AEROELASTIC ANALYSIS OF A HELICOPTER ROTOR A Thesis LARRY JAY McQUIEN Approved as to style and content by: (Co-Chairman of Committee) / l (Co-Chair an o f Commi t tee) (Head of Depa tment) (Nember) (Nember) December 1977...

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

    E-Print Network [OSTI]

    Müller, Norbert

    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

  11. On the Classification of Universal Rotor-Routers

    E-Print Network [OSTI]

    He, Xiaoyu

    2011-01-01T23:59:59.000Z

    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...

  12. 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

  13. Evaluation of the first Coulomb Bridge in three dimensions Y. Furutani (*), C. Deutsch

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of point charges interacting via the Coulomb law in the presence of a neutralizing and mechanically rigidL-285 Evaluation of the first Coulomb Bridge in three dimensions Y. Furutani (*), C. Deutsch to study equilibrium and transport pro- perties in classical and more realistic strongly coupled Coulomb

  14. Deutsche Schutzvereinigung fr Wertpapierbesitz e.V. (DSW) / Technische Universitt Mnchen (TUM) Lehrstuhl fr Betriebswirtschaftslehre und Controlling Studie zur

    E-Print Network [OSTI]

    Heiz, Ulrich

    Telekom 844 917 8,60% 741 584 21,19% 1.585 1.501 5,33% 261 266 1,92% 1.846 1.767 4,30% E.ON 869 932 7

  15. Tftler im Bierkeller Richard von Schirach, Die Nacht der Physiker, Heisenberg, Hahn, Weizscker und die deutsche Bombe

    E-Print Network [OSTI]

    Hitler-Regime. Dass es Deutschen dagegen an ,,moralischer Moti- vation" gemangelt habe, wie Werner Hei, nicht um Widerstand ge- gen Hitler ging. Dass die Bombe in Deutschland nie ge- baut wurde, hat den

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

    E-Print Network [OSTI]

    Aue, J.; Fineran, B.

    2005-01-01T23:59:59.000Z

    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...

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

    DOE Patents [OSTI]

    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

    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.

  18. Utilization of rotor kinetic energy storage for hybrid vehicles

    DOE Patents [OSTI]

    Hsu, John S. (Oak Ridge, TN)

    2011-05-03T23:59:59.000Z

    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.

  19. Institut fr Medizinische Mikrobiologie, Virologie und Hygiene

    E-Print Network [OSTI]

    Lübeck, Universität zu

    Institut für Medizinische Mikrobiologie, Virologie und Hygiene Forschungsgruppe Virologie Das Institut für Medizinische Mikrobiologie, Virologie und Hygiene an den Universitätskliniken Hamburg

  20. Deutsche Telekom launches International Competence Center to drive global Machine-to-Machine (M2M) innovation

    E-Print Network [OSTI]

    Deutschmann, Rainer

    segments: Transport & logistics, vehicle telematics, smart metering / smart grid, consumer electronics, security, retail & commerce, industrial automation monitoring and control, healthcare and public sector connectivity and online services in vehicles, demonstrating the innovation and collaboration between Deutsche

  1. Electrofriction method of manufacturing squirrel cage rotors

    DOE Patents [OSTI]

    Hsu, John S.

    2005-04-12T23:59:59.000Z

    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.

  2. Horizontal wind rotor. Final technical report

    SciTech Connect (OSTI)

    Guard, E.J.

    1983-06-30T23:59:59.000Z

    A vertical axis wind machine called, ''Horizontal Wind Rotor'' conceived in 1979 by the Grantee E.J. Guard was an effort to marry a new high tech carousel type wind rotor to a basic building design for the purpose of generating practical amounts of electricty. This was directed especially towards high performance power generation, relative to low average wind velocity fields, typically found in Florida. From January 1980 to April 1983 two 1/30 scale wind tunnel type test models of buildings, one round and one square were built. An eight Hartzell shrouded wind tunnel fan machine was designed and built to supply uniform wind velocities for testing. All components of the Horizontal Wind Rotor (HWR) were fabricated, instrumented, mounted on the building models, and tested and modified repeatedly for performance optimization. Aerodynamic consultants, model makers, mechanical and computer engineers and technicians under the direction of E. Guard all teamed up to evolve the size, shape, and placement of the system components. It was recognized early that the machine had to be large in order to extract energy from low wind velocities. It was also noted that there were so many variables in the system, so as to elude analytical computation, that only testing could provide the answers. Consequently, this grant program has provided major contributions to the sparse available data in this little studied field, and set up valuable bench marks in design and power output parameters. This data will be the foundation for incorporating the newly discovered design improvements into the full scale prototype to follow. (Phase II) It is believed that this Rotor design is the only one in the world today that will produce as much power in the lower wind velocity ranges and it is also believed that every objective of the original grant proposal has been met or exceeded.

  3. MHH Forschungsbericht 2004582 Abteilung Medizinische Mikrobiologie und

    E-Print Network [OSTI]

    Manstein, Dietmar J.

    -Wirtsinteraktionen in den Modellsystemen der chronischen Helicobacter pylori- und Helicobacter hepaticus-Infektion. Prof. Dr

  4. BERATER UND UNTERSCHRIFTSBEFUGTE ANERKENNUNG (BZGL. PRAKTIKUMSVEREINBARUNG)

    E-Print Network [OSTI]

    Schüler, Axel

    -Siegmund Institut für Psychologie Prof. Dr. Evelin Witruk CHEMIE UND MINERALOGIE Prof. Dr. Reinhard Denecke denecke

  5. Double-ended ceramic helical-rotor expander

    DOE Patents [OSTI]

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

    1995-02-28T23:59:59.000Z

    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.

  6. Rotor assembly and method for automatically processing liquids

    DOE Patents [OSTI]

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

    1992-12-22T23:59:59.000Z

    A rotor assembly is described for performing a relatively large number of processing steps upon a sample, such as a whole blood sample, and a diluent, such as water. It includes a rotor body for rotation about an axis and includes a network of chambers within which various processing steps are performed upon the sample and diluent and passageways through which the sample and diluent are transferred. A transfer mechanism is movable through the rotor body by the influence of a magnetic field generated adjacent the transfer mechanism and movable along the rotor body, and the assembly utilizes centrifugal force, a transfer of momentum and capillary action to perform any of a number of processing steps such as separation, aliquoting, transference, washing, reagent addition and mixing of the sample and diluent within the rotor body. The rotor body is particularly suitable for automatic immunoassay analyses. 34 figs.

  7. Rotor assembly and method for automatically processing liquids

    DOE Patents [OSTI]

    Burtis, Carl A. (Oak Ridge, TN); Johnson, Wayne F. (Loudon, TN); Walker, William A. (Knoxville, TN)

    1992-01-01T23:59:59.000Z

    A rotor assembly for performing a relatively large number of processing steps upon a sample, such as a whole blood sample, and a diluent, such as water, includes a rotor body for rotation about an axis and including a network of chambers within which various processing steps are performed upon the sample and diluent and passageways through which the sample and diluent are transferred. A transfer mechanism is movable through the rotor body by the influence of a magnetic field generated adjacent the transfer mechanism and movable along the rotor body, and the assembly utilizes centrifugal force, a transfer of momentum and capillary action to perform any of a number of processing steps such as separation, aliquoting, transference, washing, reagent addition and mixing of the sample and diluent within the rotor body. The rotor body is particularly suitable for automatic immunoassay analyses.

  8. Disc rotors with permanent magnets for brushless dc motor

    SciTech Connect (OSTI)

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

    1992-05-26T23:59:59.000Z

    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.

  9. Rotor for processing liquids using movable capillary tubes

    DOE Patents [OSTI]

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

    1987-07-17T23:59:59.000Z

    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.

  10. Rotor for processing liquids using movable capillary tubes

    DOE Patents [OSTI]

    Johnson, Wayne F. (Loudon, TN); Burtis, Carl A. (Oak Ridge, TN); Walker, William A. (Knoxville, TN)

    1989-05-30T23:59:59.000Z

    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.

  11. Rotor for processing liquids using movable capillary tubes

    DOE Patents [OSTI]

    Johnson, Wayne F. (Loudon, TN); Burtis, Carl A. (Oak Ridge, TN); Walker, William A. (Knoxville, TN)

    1989-01-01T23:59:59.000Z

    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.

  12. Universitt Paderborn Leistungselektronik und Elektrische Antriebstechnik, Prof. Dr. Joachim Bcker -1-Mechatronik und elektrische Antriebe A

    E-Print Network [OSTI]

    Paderborn, Universität

    Universität Paderborn Leistungselektronik und Elektrische Antriebstechnik, Prof. Dr. Joachim Böcker -1- Mechatronik und elektrische Antriebe A Beispiele für mechatronische Systeme #12;Universität Paderborn Leistungselektronik und Elektrische Antriebstechnik, Prof. Dr. Joachim Böcker -2- Nicht

  13. Mechanical coupling for a rotor shaft assembly of dissimilar materials

    DOE Patents [OSTI]

    Shi, Jun (Glastonbury, CT); Bombara, David (New Hartford, CT); Green, Kevin E. (Broad Brook, CT); Bird, Connic (Rocky Hill, CT); Holowczak, John (South Windsor, CT)

    2009-05-05T23:59:59.000Z

    A mechanical coupling for coupling a ceramic disc member to a metallic shaft includes a first wedge clamp and a second wedge clamp. A fastener engages a threaded end of a tie-bolt to sandwich the ceramic disc between the wedge clamps. An axial spring is positioned between the fastener and the second wedge clamp to apply an axial preload along the longitudinal axis. Another coupling utilizes a rotor shaft end of a metallic rotor shaft as one wedge clamp. Still another coupling includes a solid ceramic rotor disc with a multiple of tie-bolts radially displaced from the longitudinal axis to exert the preload on the solid ceramic rotor disc.

  14. Interface structure for hub and mass attachment in flywheel rotors

    DOE Patents [OSTI]

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

    1998-06-02T23:59:59.000Z

    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.

  15. Interface structure for hub and mass attachment in flywheel rotors

    DOE Patents [OSTI]

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

    1998-06-02T23:59:59.000Z

    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.

  16. Sandia Energy - Offshore Wind RD&D: Large Offshore Rotor Development

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

    Offshore Rotor Development Home Stationary Power Energy Conversion Efficiency Wind Energy Offshore Wind Offshore Wind RD&D: Large Offshore Rotor Development Offshore Wind RD&D:...

  17. Sandia Energy - Offshore Wind RD&D: Large Offshore Rotor Development

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

    Offshore Wind RD&D: Large Offshore Rotor Development Home Stationary Power Energy Conversion Efficiency Wind Energy Offshore Wind Offshore Wind RD&D: Large Offshore Rotor...

  18. Rotor heating effects from geomagnetic induced currents

    SciTech Connect (OSTI)

    Gish, W.B.; Feero, W.E.; Rockefeller, G.D. (Electric Research and Management, Inc., State College, PA (United States))

    1994-04-01T23:59:59.000Z

    The heating effects at the end-ring connection areas of the rotor due to the harmonic current generation of a saturating unit transformer from geomagnetic induced currents (GIC) on the transmission system have been calculated from observed data and from EMTP studies sponsored by the Electric Power Research Institute. These calculations show that damage may occur during strong GIC storm activity. This damage can occur from unit transformer saturation or other transformers in the system near the generator. The possibility of damage should be monitored during strong GIC storms through the use of appropriate negative sequence current monitoring and alarms.

  19. Turbulence ingestion noise of open rotors

    E-Print Network [OSTI]

    Robison, Rosalyn Aruna Venner

    2012-04-10T23:59:59.000Z

    . Thus a blade whose leading edge curves back in the axial direction, as seen in Figure 1.4, has non-zero sweep. 1.2 Technological context: the open rotor design 9 Figure 1.3: Example of Rig 140 noise results. Image reproduced with permission from... , 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...

  20. Auslegung, Entwicklung und Inbetriebnahme eines longitudinalen und transversalen Feedbacksystems zur Dämpfung gekoppelter Teilchenpaket-Instabilitäten im BESSY-II-Speicherring

    E-Print Network [OSTI]

    Knuth, T

    2000-01-01T23:59:59.000Z

    Auslegung, Entwicklung und Inbetriebnahme eines longitudinalen und transversalen Feedbacksystems zur Dämpfung gekoppelter Teilchenpaket-Instabilitäten im BESSY-II-Speicherring

  1. Chaos in a rotor system supported by ball bearings

    E-Print Network [OSTI]

    Fisher, James Robert, 1979-

    2013-02-22T23:59:59.000Z

    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...

  2. Induction Motors Thermal Monitoring by Means of Rotor Resistance Identification

    E-Print Network [OSTI]

    Boyer, Edmond

    , FRANCE Mohamed-El-Hackemi.Benbouzid@sc.u-picardie.fr Abstract: Rotor and stator temperature machines. Especially, when operating with overload cycles, it is necessary to monitor rotor bars and stator winding temperatures to make sure that the temperature remains below prescribed limits. The purpose

  3. Main Rotor Swashplate Test Stand Design Model and System Overview

    E-Print Network [OSTI]

    Almor, Amit

    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

  4. Effects of increasing tip velocity on wind turbine rotor design.

    SciTech Connect (OSTI)

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

    2014-05-01T23:59:59.000Z

    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.

  5. Texas Fluid Dynamics Meeting, 2013 STABILITY OF ROTOR WAKES.

    E-Print Network [OSTI]

    Tinney, Charles E.

    to the presence of multiple helical fila- ments. Wakes of helicopter rotors, wind turbines and ma- rine propellers% confidence interval at wake ages, : 10 - 80. Dashed lines are separated by r /r = 3 in the wake of windTexas Fluid Dynamics Meeting, 2013 STABILITY OF ROTOR WAKES. Swathi M. Mula & Charles. E. Tinney

  6. Single Molecular Rotor at the Nanoscale Christian Joachim1

    E-Print Network [OSTI]

    Gimzewski, James

    to transform such a molecular rotor into a motor with a given motive power are also discussed. Keywords components that transform energy (or information) and use this transformation. Their miniaturization is often: Molecular rotor, Motive power, Decoherence, Classical motion, Quantum control, Nano-thermodynamics 1

  7. Putty und clay Funktionen in Produktion und Finanzen Eine Einfhrung in die Makro-konophysik

    E-Print Network [OSTI]

    Mimkes, Jürgen

    Putty und clay Funktionen in Produktion und Finanzen Eine Einführung in die Makro Funktionen als putty oder clay. Putty bedeutet Kitt, der erst weich ist und dann fest wird. Eine putty Jahresende (ex post) ist es fixiert. Clay bedeutet Ton. Eine (gebrannte) Tonschale ist anfangs fest und auch

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

    SciTech Connect (OSTI)

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

    2011-12-01T23:59:59.000Z

    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

  9. Villafranca Die Kabinete und die Revolutionen.

    E-Print Network [OSTI]

    Prodinger, Helmut

    bucklige Bursche, und lobte mich, daß ich Soldat werden wollte. Er sagte, den Soldaten allein gehöre die

  10. Tip cap for a turbine rotor blade

    DOE Patents [OSTI]

    Kimmel, Keith D

    2014-03-25T23:59:59.000Z

    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.

  11. Rotor and bearing system for a turbomachine

    DOE Patents [OSTI]

    Lubell, Daniel; Weissert, Dennis

    2006-09-26T23:59:59.000Z

    A rotor and bearing system for a turbomachine. The turbomachine includes a drive shaft, an impeller positioned on the drive shaft, and a turbine positioned on the drive shaft proximate to the impeller. The bearing system comprises one gas journal bearing supporting the drive shaft between the impeller and the turbine. The area between the impeller and the turbine is an area of increased heat along the drive shaft in comparison to other locations along the drive shaft. The section of the drive shaft positioned between impeller and the turbine is also a section of the drive shaft that experiences increased stressed and load in the turbomachine. The inventive bearing machine system positions only one radial bearing in this area of increased stress and load.

  12. Synchronization and Collective Dynamics in a Carpet of Microfluidic Rotors

    E-Print Network [OSTI]

    Nariya Uchida; Ramin Golestanian

    2010-04-28T23:59:59.000Z

    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.

  13. Control coil arrangement for a rotating machine rotor

    DOE Patents [OSTI]

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

    2001-07-31T23:59:59.000Z

    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.

  14. Lean implementation across value stream in main rotor blade area

    E-Print Network [OSTI]

    Phoenix, Casey J. (Casey John)

    2007-01-01T23:59:59.000Z

    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 ...

  15. Methods and apparatus for rotor blade ice detection

    DOE Patents [OSTI]

    LeMieux, David Lawrence

    2006-08-08T23:59:59.000Z

    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.

  16. Sandia National Laboratories: capture more wind with longer rotors

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

    capture more wind with longer rotors New Material Tests Show Biaxial Laminate Creep Is Important for Large Wind-Turbine Blades On April 1, 2014, in Energy, News, News & Events,...

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

    Energy Savers [EERE]

    and Sandia National Laboratories (SNL) are designing a modern, research-quality wind turbine rotor for use at the new Scaled Wind Farm Technology (SWiFT) site at Texas Tech...

  18. Methods and apparatus for rotor load control in wind turbines

    DOE Patents [OSTI]

    Moroz, Emilian Mieczyslaw

    2006-08-22T23:59:59.000Z

    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.

  19. Georg Faustus – Leben und Legende

    E-Print Network [OSTI]

    Baron, Frank

    2009-01-01T23:59:59.000Z

    . T h e p u b lis h er v er si o n is a va ila b le o n it s si te . [This document contains the author’s accepted manuscript, in both German and English. For the publisher’s version, see the link in the header of this document.] Paper... begann sein Studium 1483 an der Universität Heidelberg und erlangte rasch akademische Grade als Bakkalaureus 1484 und als Magister der Philosophie 1487. Im Alter von 21 Jahren, dem Mindestalter für den Magisterabschluss, vollbrachte er eine für seine...

  20. Structural testing of the North Wind 250 composite rotor joint

    SciTech Connect (OSTI)

    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

    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.

  1. Control of Induction Motor with Cbrientation on Rotor Flux or on Stator Flux in a very wide Field Weakening Regiori -

    E-Print Network [OSTI]

    Paderborn, Universität

    inductance of stator and rotor winding (Ls = L, = L,,, +Lo is assumed here). Rotor speed. Number of pole pairs. Resistances of stator and rotor winding. Rotor time constant. Electromagnetic torque. Load torqueControl of Induction Motor with Cbrientation on Rotor Flux or on Stator Flux in a very wide Field

  2. Single qudit realization of the Deutsch algorithm using superconducting many-level quantum circuits

    E-Print Network [OSTI]

    E. O. Kiktenko; A. K. Fedorov; A. A. Strakhov; V. I. Man'ko

    2015-04-05T23:59:59.000Z

    Design of a large-scale quantum computer has paramount importance for science and technologies. We investigate a scheme for realization of quantum algorithms using noncomposite quantum systems, i.e., systems without subsystems. In this framework, $n$ artificially allocated "subsystems" play a role of qubits in $n$-qubits quantum algorithms. With focus on two-qubit quantum algorithms, we demonstrate a realization of the universal set of gates using a $d=5$ single qudit state. Manipulation for an ancillary level in the systems allows effective implementation of operators from ${\\rm U}(4)$ group via operators from ${\\rm SU}(5)$ group. Using a possible experimental realization of such systems through anharmonic superconducting many-level quantum circuits, we present a blueprint for a single qudit realization of the Deutsch algorithm, which generalizes previously studied realization based on the virtual spin representation [A.R. Kessel et al., Phys. Rev. A 66, 062322 (2002)].

  3. Rigid-rotor, field-reversed configuration

    SciTech Connect (OSTI)

    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

    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.

  4. Campbell diagrams of weakly anisotropic flexible rotors

    E-Print Network [OSTI]

    Oleg N. Kirillov

    2009-06-09T23:59:59.000Z

    We consider an axi-symmetric rotor perturbed by dissipative, conservative, and non-conservative positional forces originated at the contact with the anisotropic stator. The Campbell diagram of the unperturbed system is a mesh-like structure in the frequency-speed plane with double eigenfrequencies at the nodes. The diagram is convenient for the analysis of the traveling waves in the rotating elastic continuum. Computing sensitivities of the doublets we find that at every particular node the untwisting of the mesh into the branches of complex eigenvalues in the first approximation is generically determined by only four 2x2 sub-blocks of the perturbing matrix. Selection of the unstable modes that cause self-excited vibrations in the subcritical speed range, is governed by the exceptional points at the corners of the singular eigenvalue surfaces--`double coffee filter' and `viaduct'--which are associated with the crossings of the unperturbed Campbell diagram with the definite Krein signature. The singularities connect the problems of wave propagation in the rotating continua with that of electromagnetic and acoustic wave propagation in non-rotating anisotropic chiral media. As mechanical examples a model of a rotating shaft with two degrees of freedom and a continuous model of a rotating circular string passing through the eyelet are studied in detail.

  5. Institut fr Energie-und Automatisierungstechnik FG Elektronische Mess-und Diagnosetechnik

    E-Print Network [OSTI]

    Wichmann, Felix

    ,,Thermoeletrische Generatoren 2020" (TEG 2020) wird die Entwicklung modularer, leistungsstarker und flexibel einsetzbarer thermoelektrischer Genera- toren (TEG) zur elektrischen Rückgewinnung in Verbrennungsmaschinen und -anlagen angestrebt. Bei TEG handelt es sich um die direkte Wandlung von thermischer in elektrischer

  6. Institut fr Energie-und Automatisierungstechnik FG Elektronische Mess-und Diagnosetechnik

    E-Print Network [OSTI]

    Wichmann, Felix

    - Foschungsprojekt ,,Thermoeletrische Generatoren 2020" (TEG 2020) wird die Entwicklung modularer, leistungsstarker und flexibel einsetzbarer thermoelektrischer Genera- toren (TEG) zur elektrischen Rückgewinnung in Verbrennungsmaschinen und -anlagen angestrebt. Bei TEG handelt es sich um die direkte Wandlung von thermischer

  7. Nr. 294 / 2012 // 31. 10. 2012 Bayreuther Spinnen in Paris

    E-Print Network [OSTI]

    Ullmann, G. Matthias

    Scienza e della Tecnologia ,,Leonardo da Vinci" di Milano und Deutsches Museum München entstanden ist

  8. Unternehmen und Social Media wie passt das zusammen? Dr. Alexander Stocker, Key Researcher, DIGITAL Institut fr Informations und

    E-Print Network [OSTI]

    Hammerton, James

    Unternehmen und Social Media ­ wie passt das zusammen? Dr. Alexander Stocker, Key Researcher, DIGITAL ­ Institut für Informations und Kommunikationstechnologien, JOANNEUM RESEARCH. DI Harald Mayer, Head of Intelligent Information Systems Group, DIGITAL Institut für Informations und

  9. aus naturwissenschaften und: Topics by E-print Network

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

    Speziell werden vier Probleme behandelt. Zur Vorbereitung auf (more) Richstein, Jrg 1999-01-01 12 Geschichte und transtextuelle Anspielungen auf Mythen und kanonisierte...

  10. Bereitstellung gtebewerteter Datenbasen und Modelle zur Einstrahlungsklimatologie im Rahmen des Europischen

    E-Print Network [OSTI]

    Heinemann, Detlev

    , Lourdes Ramírez 4 , Jesús Polo 4 , Lucien Wald 5 , Thomas Huld 6 , Marcel Suri 6 1 Deutsches Zentrum für

  11. Tobias Bolch Rezenter Gletscherschwund und Klimawandel

    E-Print Network [OSTI]

    Bolch, Tobias

    Tobias Bolch Rezenter Gletscherschwund und Klimawandel im nördlichen Tien Shan (Kasachstan/Kyrgyzstan). Sie befinden sich im kontinentalen Bereich des südlichen Ka- sachstans an der Grenze zu Kyrgyzstan

  12. ISABE-2005-1214 Optimum Applications of Four-Port Wave Rotors for Gas Turbines Enhancement

    E-Print Network [OSTI]

    Müller, Norbert

    compressor PT polytropic turbine th thermal WE wave rotor expansion WP wave rotor compression 3 combustor efficiency pressure ratio Subscripts b baseline (untopped) engine comb combustor loss PC polytropic

  13. aero-elasticity rotor aerodynamics: 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:...

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

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

    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 March 16,...

  15. Hi-Q Rotor - Low Wind Speed Technology

    SciTech Connect (OSTI)

    Todd E. Mills; Judy Tatum

    2010-01-11T23:59:59.000Z

    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.

  16. Operating Modes of a Teeter-Rotor Wind Turbine

    SciTech Connect (OSTI)

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

    1999-02-25T23:59:59.000Z

    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.

  17. Method and apparatus for assembling permanent magnet rotors

    DOE Patents [OSTI]

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

    1999-06-22T23:59:59.000Z

    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.

  18. Preliminary Design Procedure for Gas TurbineTopping Reverse-Flow Wave Rotors

    E-Print Network [OSTI]

    Müller, Norbert

    improvement of a 30 kW microturbine by implementing various wave-rotor topping cycles. Five different

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    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

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

    E-Print Network [OSTI]

    Boyer, Edmond

    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

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    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

  2. What Stator Current Processing Based Technique to Use for Induction Motor Rotor Faults Diagnosis?

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    What Stator Current Processing Based Technique to Use for Induction Motor Rotor Faults Diagnosis, marked improvement has been achieved in the design and manufacture of stator winding. However, motors and treatment processes. But cage rotor design has undergone little change. As a result, rotor failures now

  3. Non-linear models for the design of solid rotor induction machines

    SciTech Connect (OSTI)

    Zaiem, M.E. (GE 44--LARGE, Saint-Nazaire (France))

    1999-05-01T23:59:59.000Z

    Two finite element methods are used to calculate the steady state performances of solid iron rotor induction machines. They are applied to both smooth and slitted rotor and are used to define the rotor form which provides the maximum torque for the rated value of the slip. The mean torque-slip characteristics calculated under constant voltages are compared to experimental results.

  4. MENTORING-PROGRAMM STUDIERENDE UND ALUMNI

    E-Print Network [OSTI]

    Heermann, Dieter W.

    MENTORING-PROGRAMM STUDIERENDE UND ALUMNI ZUKUNFT GEMEINSAM GESTALTEN Sie suchen Unterstützung bei? Dann machen Sie mit beim Mentoring- Programm für Studierende und Ehemalige der Universität Heidelberg. So einfach funktioniert's: 1. Registrieren Sie sich kostenlos bei HAI. 2. Als Mentor: Erstellen Sie

  5. Fakultat fur Mathematik und Physik Institut fur Algebra, Zahlentheorie

    E-Print Network [OSTI]

    Bessenrodt, Christine

    und Lineal in die Sprache der Algebra ¨ubersetzen und algebraische Methoden zu ihrer BeantwortungFakult¨at f¨ur Mathematik und Physik Institut f¨ur Algebra, Zahlentheorie und Diskrete Mathematik Prof. Dr. C. Bessenrodt Wintersemester 2011/12 Algebra I (4V+2¨U) Eine beispielorientierte Einf

  6. Messdatenerfassung und Kommunikation im MICRO GRID eines industriellen Produktionsstandortes

    E-Print Network [OSTI]

    Paderborn, Universität

    Energiespeicher und eine ,,POWER TO GAS" -Anlage kompensiert werden. Die intelligente Koordination von Erzeugungs

  7. 1 Veranderungen der Ener-gieerzeugung und -verteilung

    E-Print Network [OSTI]

    Appelrath, Hans-Jürgen

    Energien wie Windkraft-, Solar, Wasser, Biogas- und Geothermieanlagen. Zum anderen wurde nicht zuletzt

  8. Friedemann Mattern / Marc Langheinrich Eingebettete, vernetzte und autonom

    E-Print Network [OSTI]

    autarke, aber drahtlos miteinander kommunizierende Computer in Dinge und Le- bensräume integriert werden

  9. Particle-in-Cell Simulation von Elektronenstrahlen und Laserpulsen in

    E-Print Network [OSTI]

    Kull, Hans-Jörg

    , · meiner Freundin Evelin für das Korrekturlesen, · und ganz besonders meinen Eltern für die Ermöglichung

  10. The 5-megawatt power plant with 126 metre rotor diameter

    E-Print Network [OSTI]

    Firestone, Jeremy

    The 5-megawatt power plant with 126 metre rotor diameter #12;Design data Rated power 5,000kW Cut and most powerful wind turbines in the world. The 5M sets new standards for the economic viability similar to conventional power plants. This in turn puts high demands on the control and regulation system

  11. Stator current demodulation for induction machine rotor faults diagnosis

    E-Print Network [OSTI]

    Boyer, Edmond

    with emphasis on stator current processing [1], [2]. It has been proven that mechanical and electrical faultsStator current demodulation for induction machine rotor faults diagnosis El Houssin El Bouchikhi of the stator currents. Hence, demodulation of the stator currents is of high interest for induction machines

  12. Phase modulated rotor angle encoder for switched reluctance motor drive

    E-Print Network [OSTI]

    Mahajan, Shailendra

    1993-01-01T23:59:59.000Z

    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...

  13. TLA-55 Rotor Used in Beckman Coulter OptimaTM

    E-Print Network [OSTI]

    Pawlowski, Wojtek

    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 or reliability cannot be assured if used in a centrifuge not of Beckman Coulter's manufacture or in a Beckman

  14. Offshore Series Wind Turbine Variable Hub heights & rotor diameters

    E-Print Network [OSTI]

    Firestone, Jeremy

    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

  15. Performance of twist-coupled blades on variable speed rotors

    SciTech Connect (OSTI)

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

    1999-12-07T23:59:59.000Z

    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.

  16. Active Flow Control on Bidirectional Rotors for Tidal MHK Applications

    SciTech Connect (OSTI)

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

    2013-08-22T23:59:59.000Z

    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.

  17. Lehrstuhl und Versuchsanstalt fr Wasserbau und Wasserwirtschaft der Technischen Universitt Mnchen

    E-Print Network [OSTI]

    Cengarle, María Victoria

    ­ Schadensanalyse und Sanierungskonzept Herr Karl-Heinz Stra�er, Fa. E.ON Kraftwerke GmbH, Landshut Hinweis

  18. Institut fr Energie-und Automatisierungstechnik FG Elektronische Mess-und Diagnosetechnik

    E-Print Network [OSTI]

    Wichmann, Felix

    BMBF-Forschungsprojektes ,,Thermoelektrische Generatoren 2020" (TEG 2020) unter Berücksichti- gung Anbindung zwischen einzelnen TEG und dem Bordnetz werden DC/DC-Wandler eingesetzt, welche jeweils statisch

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

    SciTech Connect (OSTI)

    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

    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.

  20. Sweep-twist adaptive rotor blade : final project report.

    SciTech Connect (OSTI)

    Ashwill, Thomas D.

    2010-02-01T23:59:59.000Z

    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.

  1. Adaptor assembly for coupling turbine blades to rotor disks

    DOE Patents [OSTI]

    Garcia-Crespo, Andres Jose; Delvaux, John McConnell

    2014-09-23T23:59:59.000Z

    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.

  2. Preform spar cap for a wind turbine rotor blade

    DOE Patents [OSTI]

    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

    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.

  3. Bergische Universitat Wuppertal Fachbereich Mathematik und Naturwissenschaften

    E-Print Network [OSTI]

    ¨ur Angewandte Mathematik und Numerische Mathematik Preprint BUW-AMNA 06/03 Cathrin van Emmerich Modelling correlation as a stochastic process Cathrin van Emmerich Department of Mathematics, University of Wuppertal

  4. Bergische Universitat Wuppertal Fachbereich Mathematik und Naturwissenschaften

    E-Print Network [OSTI]

    ¨ur Angewandte Mathematik und Numerische Mathematik Preprint BUW-AMNA 07/02 Cathrin van Emmerich Stochastic Mean;Stochastic Mean Reversion in the Large Homogenous Portfolio Model Cathrin van Emmerich Department

  5. Blade platform seal for ceramic/metal rotor assembly

    DOE Patents [OSTI]

    Wertz, John L. (Indianapolis, IN)

    1982-01-01T23:59:59.000Z

    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.

  6. Oxygen-Diffused Titanium as a Candidate Brake Rotor Material

    SciTech Connect (OSTI)

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

    2009-01-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Paquette, J. A.

    2012-03-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    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

    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.

  9. S. Phleps LMU SS09: Galaxien und Galaxienhaufen im Universum 1 Galaxien und Galaxienhaufen im Universum

    E-Print Network [OSTI]

    Boehringer, Hans

    LMU SS09: Galaxien und Galaxienhaufen im Universum The integral constraint (I) 8 (r)measured = (r)true LMU SS09: Galaxien und Galaxienhaufen im Universum Agenda · The correlation function ­Measurement function and the power spectrum of the density fluctuations · Higher order statistics · Baryonic acoustic

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

    E-Print Network [OSTI]

    Williams, James Philip

    1988-01-01T23:59:59.000Z

    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...

  11. Rotor parameter determination for the Brushless Doubly Fed (Induction) Machine (BDFM)

    E-Print Network [OSTI]

    McMahon, R. A.; Roberts, P. C.; Tatlow, M. R.; Abdi, E.; Broekhof, A.; Abdi, S.

    2015-06-19T23:59:59.000Z

    Zeff Impedance of individual rotor loop (?) nr rotor turns ratio I. INTRODUCTION Contemporary interest in the BDFM principally arises as it is a potential alternative to the slip-ring induction generator widely used in wind turbines although it can also... , the equivalent circuit forms a valuable design tool, enabling candidate machine designs to be rapidly evaluated. In particular rotor parameters are important in determining the pull out torque of the machine as well as low-voltage ride through performance in wind...

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

    DOE Patents [OSTI]

    Moroz, Emilian Mieczyslaw; Pierce, Kirk Gee

    2006-10-10T23:59:59.000Z

    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.

  13. Tuning thermal mismatch between turbine rotor parts with a thermal medium

    DOE Patents [OSTI]

    Schmidt, Mark Christopher (Niskayuna, NY)

    2001-01-01T23:59:59.000Z

    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.

  14. Bachelor-, Master-und Doktorandenseminar des Instituts fr Informatik

    E-Print Network [OSTI]

    Zachmann, Gabriel

    wird. Die Wahl fällt dabei auf die Integration von CMMI-DEV und ITIL bzw. ITIL Service Design. Zur Schnittstellenbereiche vorgestellt, an denen sich Prozessgebiete von CMMI-DEV und ITIL Service Design berühren. Daraufhin

  15. analyse und modellierung: Topics by E-print Network

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

    und Komponenten der Zentrosomenaktivitt (more) Oates, Jennifer 2013-01-01 114 AVIONIK AUTOMOTIVE RAUMFAHRT ENERGIESYSTEME PRODUKTION UND LOGISTIK WEHRTECHNIK S Y S T E M S E N...

  16. Aspekte der Paranoia in utopischer Literatur und Film

    E-Print Network [OSTI]

    Schuetze, Andre

    2013-01-01T23:59:59.000Z

    aus fast unsichtbar, ein Soldat. Man konnte zwar mit demund Hofpage, Opfer und Soldat im Dreißigjährigen Krieg,

  17. Beam Based Alignment of the TESLA X-ray FEL undulators Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607 Hamburg, Germany

    E-Print Network [OSTI]

    Beam Based Alignment of the TESLA X-ray FEL undulators B. Faatz Deutsches Elektronen the performance of the FEL is the overlap between electron beam and radiation field during the amplification The TESLA X-ray FEL laboratory is a proposed user facility in the wavelength range between ¼ Å and 6 nm

  18. Sudan und Sd-Sudan. Vom Konflikt zur Kooperation?

    E-Print Network [OSTI]

    Koenig, Friederike - Fachbereich 2 Biologie

    Sudan und Süd-Sudan. Vom Konflikt zur Kooperation? Professor Dr. Karl Wohlmuth (Fachbereich aktuellen Konflikte zwischen dem Sudan und dem Süd-Sudan haben, wie die Konflikte innerhalb der beiden internationalen Grenze zwischen Sudan und Süd-Sudan mobilisiert werden können. Schon vor der Unabhängigkeit des

  19. 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

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

    E-Print Network [OSTI]

    Zhou, Yaoqi

    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

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

    E-Print Network [OSTI]

    Sparkær 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 Sparkær Blade Test Centre became

  2. Molecular rotors: synthesis and evaluation as viscosity sensors Jeyanthy Sutharsan a

    E-Print Network [OSTI]

    Theodorakis, Emmanuel

    Molecular rotors: synthesis and evaluation as viscosity sensors Jeyanthy Sutharsan a , Darcy-mechanical viscosity sensors. These compounds, referred to as molecular rotors, belong to a class of fluorescent probes present the synthesis and spectroscopic characterization of these compounds as viscosity sensors

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

    E-Print Network [OSTI]

    Müller, Norbert

    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

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

    E-Print Network [OSTI]

    Boyer, Edmond

    Numerical modeling of heat transfer and fluid flow in rotor-stator cavities with throughflow S modeling of the turbulent flow in a rotor-stator cavity subjected to a superimposed throughflow with heat the dynamical effects from the heat transfer process. The fluid flow in an enclosed disk system with axial

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

    E-Print Network [OSTI]

    Boyer, Edmond

    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

  6. A New Approach to Detect Broken Rotor Bars in Induction Machines by Current Spectrum Analysis

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the Fourier Transform of one stator current to make detection. But where the other methods use the Fourier. It is well- known that an interruption of a manufacturing process due to a mechanical or electrical problem rotor bars or cracked rotor end ring), stator faults (opening of a stator phase or inter-turn short

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

    E-Print Network [OSTI]

    Ryu, Keun

    2012-02-14T23:59:59.000Z

    comprehensive measurements of bearing temperatures and shaft dynamics conducted on a hollow rotor supported on two first generation GFBs. The hollow rotor (1.36 kg, 36.51 mm OD and 17.9 mm ID) is heated from inside to reach an outer surface temperature of 120...

  8. 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

  9. 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

  10. Produktion von geladenen Pionen und Kaonen, Protonen, Antiprotonen und $\\phi$-Mesonen in ultrarelativistischen Blei-Blei-Stossen bei 158 GeV pro Nukleon

    E-Print Network [OSTI]

    Mock, A

    1997-01-01T23:59:59.000Z

    Produktion von geladenen Pionen und Kaonen, Protonen, Antiprotonen und $\\phi$-Mesonen in ultrarelativistischen Blei-Blei-Stossen bei 158 GeV pro Nukleon

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

    SciTech Connect (OSTI)

    None

    2010-10-01T23:59:59.000Z

    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.

  12. Fakultt fr Mathematik und Informatik Abteilung Didaktik

    E-Print Network [OSTI]

    Knüpfer, Christian

    nichteuklidischen Räumen sowie zur Lehrerbildung, wobei Ungarn aus DDR-Perspektive, wie Prof. Böhm betonte, als Problemlösen auf dem Gebiet der Stochastik unter besonderer Berücksichtigung der neuen Abiturprüfung in Ungarn Problemlösen durch Modellieren Im Vortrag wird der Stochastikunterricht in Ungarn durch konkrete Probleme und

  13. PHILOSOPHIE Geschichte und Klassische Texte der Philosophie

    E-Print Network [OSTI]

    Pfeifer, Holger

    24 / 251 Grundfragen der Ethik (EPG I) Dr. Hans-Klaus Keul, Universität Ulm Seminar, Di 17 /104 Religion und Evolution. Ende oder Wende, Anpassung oder Paradigmenwechsel? Prof. Dr. Roman Bauer Schule (EPG II) Dr. Gisela Badura-Lotter, Dr. Christiane Imhoff, Dr. Hans-Klaus Keul Kompaktseminar, Fr

  14. George Hesekiel Faust und Don Juan

    E-Print Network [OSTI]

    Wagner, Stephan

    einige dunkle Gestalten schlafen- der Sclaven und tritt hochaufathmend hinaus in die #12;-- 2 -- kühle funkelt, tritt Don Ju- an aus der Verandah zurück in sein Haus, er erreicht sein Zimmer, er löscht seine

  15. Bergische Universitat Wuppertal Fachbereich Mathematik und Naturwissenschaften

    E-Print Network [OSTI]

    ¨ur Angewandte Mathematik und Numerische Mathematik Preprint BUW-AMNA 07/01 Roland Pulch and Cathrin van Emmerich://www.math.uni-wuppertal.de/org/Num/ #12;Polynomial Chaos for Simulating Random Volatilities Roland Pulch and Cathrin van Emmerich

  16. Team MINT: Fachteam Mathematik, Informatik, Natur-und Ingenieurwissenschaften Stadtmitte Team Human: Fachteam Humanwissenschaften

    E-Print Network [OSTI]

    Reggelin, Michael

    Team MINT: Fachteam Mathematik, Informatik, Natur- und Ingenieurwissenschaften Stadtmitte Team Human: Fachteam Humanwissenschaften Team GeWiss: Fachteam Gesellschafts- und Geschichtswissenschaften Team Zentr. Info: Team Zentrale Information, P icht und elektronisches Publizieren Team ReWir: Fachteam

  17. Computersimulationen martensitischer Phasenubergange in Eisen-Nickel-und Nickel-Aluminium-Legierungen

    E-Print Network [OSTI]

    Entel, P.

    Computersimulationen martensitischer Phasen¨uberg¨ange in Eisen-Nickel- und Nickel Molekulardynamik-Simulationen der martensitischen Umwandlungen in Eisen-Nickel- und Nickel Anpassung parametrisierter Funktionen an experimentelle Daten von Eisen, Nickel, Aluminium und NiAl gewonnen

  18. Vibration analysis of rotor systems using reduced subsystem models

    E-Print Network [OSTI]

    Fan, Uei-Jiun

    1985-01-01T23:59:59.000Z

    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...

  19. Assessment of research needs for wind turbine rotor materials technology

    SciTech Connect (OSTI)

    Not Available

    1991-01-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    NONE

    1996-09-01T23:59:59.000Z

    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.

  1. Adaptor assembly for coupling turbine blades to rotor disks

    SciTech Connect (OSTI)

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

    2014-06-03T23:59:59.000Z

    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.

  2. Cooling system for a bearing of a turbine rotor

    DOE Patents [OSTI]

    Schmidt, Mark Christopher (Niskayuna, NY)

    2002-01-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

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

    2006-04-01T23:59:59.000Z

    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.

  4. Rotordynamic performance of a rotor supported on bump-type foil bearings: experiments and predictions

    E-Print Network [OSTI]

    Rubio Tabares, Dario

    2006-08-16T23:59:59.000Z

    Ww P L D= ? ? , Load coefficient Wn Bearing load [N] X, Y Horizontal and vertical rotor displacements xG Distance between the rotor CG to the free end [mm] z Damping ratio ? ( ) K E T t? = ? . FB dimensionless stiffness coefficient ? 26... length [mm] m Imbalance mass [kg] zm ? z z D ? = ? ?? , Total axial flow rate [kg/s] M, MB Rotor mass and bearing mass [kg] zM ? ( )2 23 24 s a z V g P PcM R T L ? ? = ? ? ? ? , Mass flow rate per bearing circumferential length [kg/m.s] N1...

  5. Modellierung der regelbaren Quellen, Lasten und Speicher im MICRO GRID eines industriellen Produktionsstandortes fr die Lastflussbe-

    E-Print Network [OSTI]

    Paderborn, Universität

    ,,POWER TO GAS" -Anlage kompensiert werden. Die intelligente Koordination von Erzeugungs- und Regelverhalten der Solar- Wechselrichter, des Batteriespeichers und der POWER TO GAS ­ Einheit in einer

  6. A Modular Building Controls Virtual Test Bed for the Integrations of Heterogeneous Systems

    E-Print Network [OSTI]

    Wetter, Michael

    2008-01-01T23:59:59.000Z

    Martin Otter, Proceedings of the 2nd Modelica con- ference.Modelica Association and Deutsches Zen- trum fur Luft- und

  7. The ESA ENVISOLAR project: Experience on the commercial use of Earth observation based solar

    E-Print Network [OSTI]

    Heinemann, Detlev

    , Lucien Wald7 , Antoine Zelenka8 1 Deutsches Zentrum für Luft- und Raumfahrt (DLR) e.V., Oberpfaffenhofen

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

    E-Print Network [OSTI]

    Parthasarathy, Nikhil Kaushik

    2004-09-30T23:59:59.000Z

    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...

  9. The effect of imbalance distribution and measurement locations on critical speeds in a turboprop engine rotor

    E-Print Network [OSTI]

    Marin, Manuel

    1996-01-01T23:59:59.000Z

    . This study examines the influence of imbalance distribution and vibration measurement location on critical speeds for a model turboprop engine rotor. Imbalance response measurements are presented for a full scale model mounted in rolling bearings with squeeze...

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

    E-Print Network [OSTI]

    Ortiz, Steven Rey

    2013-02-22T23:59:59.000Z

    . 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...

  11. Identification of force coefficients in flexible rotor-bearing systems - enhancements and further validations

    E-Print Network [OSTI]

    Balantrapu, Achuta Kishore Rama Krishna

    2005-11-01T23:59:59.000Z

    Rotor-bearing system characteristics, such as natural frequencies, mode shapes, stiffness and damping coefficients, are essential to diagnose and correct vibration problems during system operation. Of the above characteristics, accurate...

  12. Effects of rotor tip clearance on an embedded compressor stage performance

    E-Print Network [OSTI]

    Sakulkaew, Sitanun

    2012-01-01T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Julian, Brian John

    2009-01-01T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Lubell, Daniel Roger

    2000-01-01T23:59:59.000Z

    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...

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

    E-Print Network [OSTI]

    Müller, Norbert

    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

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

    E-Print Network [OSTI]

    Faulkner, Henry B.

    1976-01-01T23:59:59.000Z

    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 ...

  17. Crossflow instability in rotor-stator flows with throughflow , M.-P. Chauve

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Crossflow instability in rotor-stator flows with throughflow S. Poncet , M.-P. Chauve We study. As the axial velocity profiles exhibit inflexion points, this instability is of crossflow type. From

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

    E-Print Network [OSTI]

    Yu, Wenbin

    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

  19. aufbau und inbetriebnahme: Topics by E-print Network

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

    mit hoher Genauigkeit vermessen. Hierzu war die przise berwachung (more) Greiner, Daniel Bernd 2013-01-01 37 AUFBAU UND UNTERSUCHUNG VON SCHICHTSYSTEMEN AUS AMPHIPHILEN...

  20. aufbau und erprobung: Topics by E-print Network

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

    mit hoher Genauigkeit vermessen. Hierzu war die przise berwachung (more) Greiner, Daniel Bernd 2013-01-01 36 AUFBAU UND UNTERSUCHUNG VON SCHICHTSYSTEMEN AUS AMPHIPHILEN...

  1. aufbau und betrieb: Topics by E-print Network

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

    mit hoher Genauigkeit vermessen. Hierzu war die przise berwachung (more) Greiner, Daniel Bernd 2013-01-01 43 AUFBAU UND UNTERSUCHUNG VON SCHICHTSYSTEMEN AUS AMPHIPHILEN...

  2. aktueller stand und: Topics by E-print Network

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

    (rechts), begr?ten gemeinsam mit Kanzler Dr. Markus- tt Bayreuth, Dr. Markus Zanner, den doppelten Abiturjahrgang, der aktuell an den Universitten und Ullmann, G....

  3. als knstler und: Topics by E-print Network

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

    Verbindungen mit Lithium 18 2.1.3 Elektrolyte Hoffmann, Rolf 5 Wachstum und Realstruktur von epitaktischen (Al,Ga)N-Schichten. Open Access...

  4. als geschichtliches und: Topics by E-print Network

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

    Verbindungen mit Lithium 18 2.1.3 Elektrolyte Hoffmann, Rolf 5 Wachstum und Realstruktur von epitaktischen (Al,Ga)N-Schichten. Open Access...

  5. aus leichtwasserreaktoren und: Topics by E-print Network

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

    ihre 1572 erschien ein neuer Stern am Himmel - eine Supernova. Der dnische Astronom Tycho Brahe war einer 428 Physiologische, chemotaxonomische und molekularbiologische...

  6. aus kleinanlagen und: Topics by E-print Network

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

    ihre 1572 erschien ein neuer Stern am Himmel - eine Supernova. Der dnische Astronom Tycho Brahe war einer 427 Physiologische, chemotaxonomische und molekularbiologische...

  7. aus naturwissenschaft und: Topics by E-print Network

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

    ihre 1572 erschien ein neuer Stern am Himmel - eine Supernova. Der dnische Astronom Tycho Brahe war einer 432 Physiologische, chemotaxonomische und molekularbiologische...

  8. aus bergbaulichen und: Topics by E-print Network

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

    ihre 1572 erschien ein neuer Stern am Himmel - eine Supernova. Der dnische Astronom Tycho Brahe war einer 427 Physiologische, chemotaxonomische und molekularbiologische...

  9. aus und weiterbildung: Topics by E-print Network

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

    ihre 1572 erschien ein neuer Stern am Himmel - eine Supernova. Der dnische Astronom Tycho Brahe war einer 444 Physiologische, chemotaxonomische und molekularbiologische...

  10. aus silizium und: Topics by E-print Network

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

    ihre 1572 erschien ein neuer Stern am Himmel - eine Supernova. Der dnische Astronom Tycho Brahe war einer 434 Physiologische, chemotaxonomische und molekularbiologische...

  11. aus guelle und: Topics by E-print Network

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

    ihre 1572 erschien ein neuer Stern am Himmel - eine Supernova. Der dnische Astronom Tycho Brahe war einer 427 Physiologische, chemotaxonomische und molekularbiologische...

  12. alter allgemeinzustand und: Topics by E-print Network

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

    auf den Bewegungsumfang der Halswirbelsule und die elektrische Aktivitt des SPC (Musculus semispinalis capitis) (more) Pogrzeba, Miriam Ruth 2009-01-01 2 Der...

  13. alter hufigkeit und: Topics by E-print Network

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

    auf den Bewegungsumfang der Halswirbelsule und die elektrische Aktivitt des SPC (Musculus semispinalis capitis) (more) Pogrzeba, Miriam Ruth 2009-01-01 2 Der...

  14. aus forschung und: Topics by E-print Network

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

    Page Topic Index 81 Aktuelle nationale und internationale Anwendungsbeispiele aus dem Car-Sharing. Open Access Theses and Dissertations Summary: ??Die vorliegende Arbeit gibt...

  15. aktuelle diagnostik und: Topics by E-print Network

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

    Lydia 2014-01-01 7 Aktuelle nationale und internationale Anwendungsbeispiele aus dem Car-Sharing. Open Access Theses and Dissertations Summary: ??Die vorliegende Arbeit gibt...

  16. auf nationaler und: Topics by E-print Network

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

    Felizitas 2010-01-01 53 Aktuelle nationale und internationale Anwendungsbeispiele aus dem Car-Sharing. Open Access Theses and Dissertations Summary: ??Die vorliegende Arbeit gibt...

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

    DOE Patents [OSTI]

    Moroz, Emilian Mieczyslaw; Pierce, Kirk Gee

    2006-10-17T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Camba, Javier

    1986-01-01T23:59:59.000Z

    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...

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

    E-Print Network [OSTI]

    Tinetti-Sanchez, Ana Fiorella

    1987-01-01T23:59:59.000Z

    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...

  20. Experimental response of a rotor supported on Rayleigh step gas bearings

    E-Print Network [OSTI]

    Zhu, Xuehua

    2004-11-15T23:59:59.000Z

    synchronous responses to imbalance correlate well with the measurements, however. The Rayleigh step gas bearing shows similar characteristics to the flexure pivot tilting pad bearing (FPTPB) tested in 2003. However, the test Rayleigh step gas bearings...] ? A Air density at ambient pressure [kg/m3] viii X, Y, z Inertial coordinate system Zij Impedance force coefficients; i, j = X ,Y [N/m] ? c Rotor critical speed [rad/s] ? ,, ? Rotor rotational speed and excitation frequency [rad/s...

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

    E-Print Network [OSTI]

    Conway, Eileen Marie

    1991-01-01T23:59:59.000Z

    ) Walter Bradley (Head of Deparnnent) Richanl M. exander (Member) Susan C. Geller (Member) August 1991 ABSTRACT The Effect of Teeth~-Stator Labyrinth Seals on Rotor Imbalance Response. (August 1991) Eileen Marie Conway, B. S. . Virginia... for calculating critical speeds created by a disk bouncing on a rotor. Pmdicted critical speeds agree well with experimental results. DEDICATION This thesis is dedicated to the memory of William E. Hayman, who loved to kick the tin around. but encouraged me...

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

    Broader source: Energy.gov [DOE]

    If you’ve ever driven by an industrial plant, you’ve probably noticed big white plumes rising from the tops of the facilities. While it might look like smoke or pollution at first glance, most of the time those white plumes are comprised of steam and heat, or what Ener-G-Rotors CEO Michael Newell calls waste heat. Mike and the researchers of Ener-G-Rotors are finding ways to use this escaped steam and turn it into energy.

  3. Villafranca Die Kabinete und die Revolutionen.

    E-Print Network [OSTI]

    Prodinger, Helmut

    Thei� an ihrer Verbindung mit dem Körös geführt haben, in denen die Revolu- tion Ungarns sich entspann bereits in einem früheren Bande erwähnt, und wie der wilde Racen- krieg in Ungarn selbst schon seit dem. Noch ehe das Jahr zu Ende, rückte die Kaiserliche Armee unter Windischgrätz in Ungarn ein. Rasch

  4. Control system for a wound-rotor motor

    DOE Patents [OSTI]

    Ellis, James N. (Chatsworth, CA)

    1983-01-01T23:59:59.000Z

    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.

  5. Experimental design and study of Free Rotor River Turbine

    SciTech Connect (OSTI)

    Nepali, D.B.

    1987-01-01T23:59:59.000Z

    Terrace irrigation along the rivers of Nepal is the vital problem of farmers in the remote villages. The existing turbines and irrigation systems are not feasible without civil structures, and suffer from the lack of resources and financial problems. A simple and inexpensive underwater Free Rotor River Turbine (FRRT) which extracts power ranging from a fraction of a HP up to 25 HP from the velocity of the running water in a river or stream was developed. The power obtained from the turbine can be used to run a pump to lift water for drinking purposes and for irrigation along the river banks during the dry season and early part of the wet season. Various designs of models have been tested in the laboratory to find the optimum pitch angle, shape and size of blades, and optimum number of blades in order to accomplish the cheapest, simplest, and most efficient turbine. The effect of diameter of turbine, velocity of water and torque produced by the turbines were studied,and the effect of simple linear twist on blades is discussed.

  6. Technische Universitt Berlin Institut fr Luft-und Raumfahrt

    E-Print Network [OSTI]

    Berlin,Technische Universität

    .-Nr.: ... Modellierung und Zuverlässigkeitsanalyse einer Flugsteuerung mit Modelica Die Bordsysteme moderner-orientierten Modellierungssprache Modelica vorgesehen. Als Beispiel ist in der Abbildung die Nicksteuerung des Airbus A320 Zuverlässigkeitsanalyse. 2. Einarbeitung in die Modellierung und Simulation mit Modelica/Dymola. 3. Erstellen von

  7. Regelsysteme 1 10. Tutorial LQ Regulator und Kalman Filter

    E-Print Network [OSTI]

    Lygeros, John

    Regelsysteme 1 10. Tutorial LQ Regulator und Kalman Filter Dave Ochsenbein Institut f¨ur Automatik ETH Z¨urich HS 2013 Dave Ochsenbein Regelsysteme 1 HS 2013 #12;10. Tutorial LQ Regulator und Kalman Filter Gliederung 10.1. Varia 10.2. LQ-Regulator 10.3. Kalman-Bucy Filter 10.4. Eigenschaften des

  8. Diss. ETH Nr. 10714 Helium und Tritium als Tracer fr

    E-Print Network [OSTI]

    Aeschbach-Hertig, Werner

    Diss. ETH Nr. 10714 Helium und Tritium als Tracer für physikalische Prozesse in Seen ABHANDLUNG zur Zürich 1994 #12;Kurzfassung ix Kurzfassung Der radioaktive Zerfall von 3H (Tritium) zu 3He mit einer Fluide aus dem Erdinnern. Helium und Tritium werden massenspektrometrisch analysiert. Im Rahmen dieser Ar

  9. Direktion des Innern Amt fr Wald und Wild

    E-Print Network [OSTI]

    Wehrli, Bernhard

    Direktion des Innern Amt für Wald und Wild Veranstaltungsreihe Forum Wild "Projet Lac Zugersee" Im Zug Aabachstrasse 5, Zug Veranstaltungsreihe Forum Wild "Projet Lac Zugersee" Im August 2013 hat ein, Zug Direktion des Innern Amt für Wald und Wild #12;

  10. Nr. 314 / 2012 // 5. Dez. 2012 Imperien diesseits und jenseits des Atlantiks

    E-Print Network [OSTI]

    Ullmann, G. Matthias

    , Großbritannien, Frankreich, Schweden, Polen, Ungarn und Deutschland für die Teilnahme an der Konfe- renz zu

  11. Nr. 05 | 25.04.2012 THE LARGER PICTURE | NEWSLETTER INTERNATIONAL UND INTERKULTURELL

    E-Print Network [OSTI]

    Hinrichs, Klaus

    Finnland, Ungarn und der Schweiz erwartet. ,,Wir wollen mit der Konferenz einen länderüber- greifenden

  12. Uni internationalU-Mail 1/07 Regensburger Universittszeitung 5 Das Thema ,,Verantwortung und Eliten"

    E-Print Network [OSTI]

    Schubart, Christoph

    , Tschechien und Ungarn offen. Über 40 Jahresstipendiaten aus diesen Ländern trafen sich Ende November

  13. Gesellschaft der Freunde und Frderer der Universitt zu Lbeck e. V., Sektion Alumni

    E-Print Network [OSTI]

    Lübeck, Universität zu

    Illig Protokoll: Frau Gabriele Zillmer TOP 1 Begrüßung Der 1. Vorsitzende begrüßt die Anwesenden und

  14. Operation of a test bed axial-gap brushless DC rotor with a superconducting stator

    SciTech Connect (OSTI)

    McKeever, J.W.; Sohns, C.W.; Schwenterly, S.W.; Young, R.W. Sr.; Campbell, V.W.; Hickey, M.H.; Ott, G.W. [Oak Ridge National Lab., TN (United States); Bailey, J.M. [Univ. of Tennessee, Knoxville, TN (United States)

    1994-12-31T23:59:59.000Z

    A variable-speed axial-gap motor with a stator consisting of four liquid helium cooled superconducting electromagnets (two pole pairs) was built and proof tested up to 608 rpm in November 1990 as a tool for joint industry-laboratory evaluation of coils fabricated from high-temperature oxide superconductors. A second rotor was fabricated with improved material, winding configuration, and wire type, and the drive system was modified to eliminate current spiking. The modified motor was characterized to design speed, 188 rad/s (1800 rpm), to acquire a performance baseline for future comparison with that of high-temperature superconducting (HTS) wire. As it becomes commercially available, HTS wire will replace the low-temperature electromagnet wire in a stator modified to control wire temperatures between 4 K and 77 K. Measurements of the superconducting electromagnetic field and locked rotor torque as functions of cryocurrent and dc current through two phases of the rotor, respectively, provided data to estimate power that could be developed by the rotor. Back emf and parasitic mechanical and electromagnetic drag torques were measured as functions of angular velocity to calculate actual rotor power developed and to quantify losses, which reduce the motor`s efficiency. A detailed measurement of motor power at design speed confirmed the developed power equation. When subsequently operated at the 33-A maximum available rotor current, the motor delivered 15.3 kW (20.5 hp) to the load. In a final test, the cryostat was operated at 2500 A, 200 A below its critical current. At rotor design current of 60 A and 2500 A stator current, the extrapolated developed power would be 44.2 kW (59.2 hp) with 94% efficiency.

  15. Segmented Ultralight Pre-Aligned Rotor for Extreme-Scale Wind Turbines

    SciTech Connect (OSTI)

    Loth, E.; Steele, A.; Ichter, B.; Selig, M.; Moriarty, P.

    2012-01-01T23:59:59.000Z

    To alleviate the mass-scaling issues associated with conventional upwind rotors of extreme-scale turbines, a downwind rotor concept is proposed which employs fixed blade curvature based on force alignment at rated conditions. For a given peak stress constraint, the reduction in downwind cantilever loads allows reduced shell and spar thickness, and thus a reduced blade mass as compared with a conventional upwind rotor, especially as rotor sizes approach extreme-scales. To quantify this mass reduction, a Finite Element Analysis was conducted for a 10 MW rated rotor based on the NREL offshore 5 MW baseline wind turbine. The results show that this 'pre-alignment' yields a net downstream deflection of 32 deg, a downward hub-pitch angle of 6 deg, a 20% increase in blade length (to maintain the same radius as the conventional blade), and a net mass savings of about 50% through decreased shell and spar thicknesses. The pre-alignment may also allow a more straightforward and efficient segmentation of the blade since shear stresses near joints are substantially reduced. Segmenting, in turn, can dramatically reduce costs associated with fabrication, transport and assembly for extreme-scale off-shore systems. The pre-aligned geometric curvature can also help alleviate tower wake effects on the blades since blade tips (where shadow effects can be most problematic) are shifted downstream where the tower wake is weaker. In addition, the portion of the tower that is upstream of the blade tips can be faired with an externally-rotating aerodynamic shroud. Furthermore, the downwind rotor can allow a floating off-shore tri-pod platform to reduce tower weight and yaw-control requirements. A simple economic analysis of the segmented ultralight pre-aligned rotor (SUPAR) concept suggests that the overall system cost savings can be as much as 25%, indicating that more detailed (numerical and experimental) investigations are warranted.

  16. Projektangebote fr das IS-Project (WS 2013/2014 und SS 2014) Fachgebiet Unternehmensrechnung und Wirtschaftsinformatik

    E-Print Network [OSTI]

    Steinhoff, Heinz-Jürgen

    System SAP Business Objects als einziges BI-System eingesetzt werden. Der Flughafen arbeitet mit dem ERP-System Controlling wurde das System SAP Business Objects angeschafft, in welches bereits die relevanten Daten aus der1 Projektangebote für das IS-Project (WS 2013/2014 und SS 2014) Fachgebiet Unternehmensrechnung und

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

    SciTech Connect (OSTI)

    Hsieh, B. J.

    1998-04-17T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    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

    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.

  19. NON-STATIONARY TEMPERATURE STRESSES IN THE INDUSTRIAL STEAM TURBINE ROTOR

    E-Print Network [OSTI]

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

    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.

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

    E-Print Network [OSTI]

    Noé Cuneo; Jean-Pierre Eckmann; Christophe Poquet

    2014-11-03T23:59:59.000Z

    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.

  1. Axial seal system for a gas turbine steam-cooled rotor

    DOE Patents [OSTI]

    Mashey, Thomas Charles (Anderson, SC)

    2002-01-01T23:59:59.000Z

    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.

  2. A First-Order Stochastic Prognostic System for the Diagnosis of Helicopter Rotor Systems for the US Navy

    E-Print Network [OSTI]

    Luger, George

    Navy Chayan Chakrabarti, Roshan Rammohan, and George F. Luger {cc | roshan | luger} @cs a diagnostic system for the US Navy to use in the analysis of the "running health" of helicopter rotor systems the data sets of actual helicopter rotor failures supplied by the US Navy. We discuss both critical

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

    SciTech Connect (OSTI)

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

    2013-01-29T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    San Andres, Luis

    2009-01-01T23:59:59.000Z

    () := step in rpm n 1 Nmax..:= T supply 50 K= rpm n Dr n()?:= rotor running speed(rpm) ? n rpm n ? 30 ? rad sec ?:= rotor speed(rad/sec) krpm rpm 1000 := it max 10:= Max iterations for thermal loop VISCOSITY formula ? T() ? supply e ?? TT supply... in ? Q ? Q 0 ? ? ? ? ? ? ? ?T ? ?? T ? T supply ?T ? +? T in T supply ?T in +? T guess T eff ? T eff 0.5 T in T ? + () ?? x ?? it it max () ?while := Speed in rev/sec Speed in rad/sec Guess (set) Effective temperature effective...

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

    E-Print Network [OSTI]

    Zierer, Joseph John

    1991-01-01T23:59:59.000Z

    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... OF SCIENCE December 1991 Major Subject: Mechanical Engineering EFFECT OF A STRAIGHT TEETH-ON-ROTOR LABYRINTH SEAL ON ROTORDYNAMICS A Thesis by JOSEPH JOHN ZIERER, JR. Approved as to style and content by: John Vance (Chair of committee) ouJgurgw e...

  6. Dissertationen und Habilitationsschriften mit Microsoft Word Leitfaden zu den Dokumentvorlagen dissertation-hu und dissonline, Version 6.1 (25.2.2013)

    E-Print Network [OSTI]

    Röder, Beate

    dissertation-hu und dissonline, Version 6.1 (25.2.2013) Dissertationen und Habilitationsschriften mit Microsoft Word Leitfaden zu den Dokumentvorlagen »dissertation-hu« »dissonline« Version 6.1 (25.2.2013) gefördert Dokumentvorlagen dissertation-hu und dissonline, Version 6.1 (25.2.2013) Impressum Herausgegeben durch: Humboldt

  7. Name: Nicole Immig Habilitationsthema: Das Trken-und Osmanenbild in

    E-Print Network [OSTI]

    Knüpfer, Christian

    /Athen, Forschungsaufenthalt am Centre of Asia-Minor- Studies/Athen und am Institute of Balkan Studies/Thessaloniki 2005 Nafoeg and their Architectural Legacy in Arta and Thessaly, Konferenz Balkan Worlds (Thessaloniki, 5.-7. Okt. 2012

  8. FTD/am; Quelle: MPI fr Dynamik und Selbstorganisation Pennsylvania

    E-Print Network [OSTI]

    Amaral, Luis A.N.

    Arkansas Pennsylvania New Mexico Kalifornien Bis hierher und nicht weiter Mobilitätsgrenzen in den USA medizini- sche Anwendungen entwickelt, der die Positronenemissionstomografie (PET) mit der Detektionsempfindlichkeit der PET verbunden werden. Bislang können allerdings nur kleine Labor- tiere untersucht werden. FTD

  9. Nr. 316 / 2012 // 10. Dezember 2012 Volksbanken und Raiffeisenbanken in

    E-Print Network [OSTI]

    Ullmann, G. Matthias

    unterstützen traditionell die Universität Bayreuth Bildunterschrift: von links: Dr. Markus Zanner, Kanzler der Zanner, dankend entgegennahm, kommt dem Lehrstuhl für BWL I (Finanzwirtschaft und Bankbetriebslehre

  10. Lehrstuhl fur Steuerungs-und Regelungstechnik Technische Universitat Munchen

    E-Print Network [OSTI]

    Kuehnlenz, Kolja

    and stimulating working environment. It was a great experience to get this generous freedom for research also to Florian Soldner at BMW AG and to Dr.-Ing. Patrick Kuhl and Michael Gr¨af at BMW Forschung und

  11. Leibniz Universitat Hannover Fakultat fur Mathematik und Physik

    E-Print Network [OSTI]

    Holm, Thorsten

    Algebra II Sommersemester 2011 ¨Ubungsblatt 1 Aufgabe 1: (a) Zeigen Sie: F¨ur alle a, b Q gilt Q( a, b gleichseitiges Dreieck mit Fl¨acheninhalt 1 ist mit Zirkel und Lineal konstruierbar (aus M = {(0, 0), (1, 0)}). (e) Sei a C, so dass a(a2 + 4a - 4) = -1. Dann ist a mit Zirkel und Lineal konstruierbar (aus M

  12. 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 define an extremely low power output gradient and demonstrate how decentralized energy storage conservative bids on the power market. Energy storage strikes the major problems of wind power and joining

  13. Magnetic Patterning of Permanent-Magnet Rotors for Microscale Motor/Generators

    E-Print Network [OSTI]

    Magnetic Patterning of Permanent-Magnet Rotors for Microscale Motor/Generators I. Zana* , F, USA Abstract We present and characterize a process to pattern magnetic poles on small permanent-magnet, this approach uses a ferromagnetic magnetizing head (MH) and an externally applied magnetic field, and it offers

  14. 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

  15. INVESTIGATION OF A COMPRESSOR ROTOR NON-SYNCHRONOUS VIBRATION WITH AND WITHOUT FLUID-STRUCTURE INTERACTION

    E-Print Network [OSTI]

    Zha, Gecheng

    INVESTIGATION OF A COMPRESSOR ROTOR NON-SYNCHRONOUS VIBRATION WITH AND WITHOUT FLUID) of a high speed multistage axial compressor using rigid blade and vibrating blade with fluid blades of a high-speed compressor showing the frequency lock-in near the 1st torsional mode (1T) during

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

    E-Print Network [OSTI]

    Cambridge, University of

    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

  17. Blade-forced vibration effects in turbomachinery rotor-stator interaction

    E-Print Network [OSTI]

    Collard, Joseph Eugene

    2000-01-01T23:59:59.000Z

    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...

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

    E-Print Network [OSTI]

    wind turbines with rotor diameters in the order of 100 meters, the influence of upstream turbine wakes codes for wind turbines utilize aerodynamics based on BEM methods, see [1, 2]. For modern large scale. Sørensen Wind Energy Department, Risø National Laboratory & Department of Civil Engineering, Aalborg

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

    E-Print Network [OSTI]

    Müller, Norbert

    , 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

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

    E-Print Network [OSTI]

    Biktashev, Vadim N.

    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

  1. „Felsenwand“ vs. „Blumental“: Fremdwahrnehmung und Selbststilisierung in J.G. Seumes Mein Sommer 1805

    E-Print Network [OSTI]

    Starzinger, Jakob

    2005-01-01T23:59:59.000Z

    Syrakus im Jahre 1802. Mein Sommer 1805. Herausgegeben vonnach Syrakus und Mein Sommer 1805. Wien 2005 (im Druck).nach Syrakus und Mein Sommer 1805. Wien 2005 (im Druck).

  2. I II. MUSICA PRO PACE 1999: Das >Junge Frankreich< und die

    E-Print Network [OSTI]

    Steinhoff, Heinz-Jürgen

    Kriegsniederlage 1940: André Jolivets »Les Trois Complaintes du Soldat« und Olivier Messiaens »Quatuor pour la Fin und Empfindungen der folgenden beiden Monate haben sich in Jolivets Les Trois Complaintes du Soldat

  3. Fakultt fr Wirtschafts-und Sozialwissenschaften Alfred Weber-Institut fr Wirtschaftswissenschaften

    E-Print Network [OSTI]

    Heermann, Dieter W.

    Fakultät für Wirtschafts- und Sozialwissenschaften Alfred Weber-Institut für Abschlussarbeit". Hiermit lädt das Studierenden- und Alumni Netzwerk des Alfred-Weber Instituts für

  4. Quo vadis universitas? Kritische Beitrge zur Idee und Zukunft der Universitt

    E-Print Network [OSTI]

    Zürich, Universität

    Vorwort Vor zehn Jahren erfasste eine Reformwelle die Institutionen der öffentlichen Verwaltung: NPM und für die Uni- versität. Nicht wenige kommunale und staatliche Verwaltungen haben ihre NPM

  5. Wiederholungsprfungen Termine frs HS 2013 und FS 2014 (im KSL unter Leistungskontrolle 2. Termin erfasst)

    E-Print Network [OSTI]

    Mühlemann, Oliver

    Wiederholungsprüfungen ­ Termine fürs HS 2013 und FS 2014 (im KSL unter Leistungskontrolle 2. Termin erfasst) Bachelor Chemie Bachelor Biochemie Grundstudium Pharmazie Master Chemie und Molekulare Biochemie (Büro S170) für Veranstaltungen aus der Biochemie (°), falls Sie einen Termin abmachen möchten

  6. Gesellschaft der Freunde und Frderer der Universitt zu Lbeck e. V., Sektion Alumni

    E-Print Network [OSTI]

    Lübeck, Universität zu

    Gabriele Zillmer TOP 1 Begrüßung Der 1. Vorsitzende begrüßt die Anwesenden und dankt allen für ihr Kommen

  7. Energie-und Leistungsbilanzierung im MICRO GRID eines industriellen Produktionsstandortes mit

    E-Print Network [OSTI]

    Paderborn, Universität

    an das lokale MICRO GRID angeschlossenen elektrischen Energiespeicher und eine ,,POWER TO GAS" -Anlage ermöglichen. Aufgabe: Um einen effizienten Einsatz des BHKW's, des Speichers und der POWER TO GAS ­ Einheit zu Konzeptes zum wirtschaftlich effizienten Einsatz des BHKW's, des Speichers und der POWER TO GAS ­ Einheit 6

  8. PD Dr. Martin Stetter, Siemens AG 1 Statistische und neuronale Lernverfahren

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Statistische und neuronale Lernverfahren Martin Stetter SS 2003, Siemens AG 2 Behandelte Themen 0. ,,Motivation": Lernen in Statistik und Biologie 1-Regression 4. Bayes-Belief-Netze Statistische und neuronale Lernverfahren #12;PD Dr. Martin Stetter, Siemens AG

  9. Zielsetzungen und Rahmenbedingungen fr die Gewhrung des Siemens-ZIB-Doktorandenstipendiums (inklusive Anlage)

    E-Print Network [OSTI]

    Andrzejak, Artur

    Zielsetzungen und Rahmenbedingungen für die Gewährung des Siemens-ZIB-Doktorandenstipendiums (inklusive Anlage) Die Firma Siemens AG und das Konrad­Zuse­Zentrum für Informationstechnik Berlin (ZIB. Verantwortlich für die Vergabe des Siemens­ZIB­Doktorandenstipendiums und für die Betreuung der Doktoranden sind

  10. PD Dr. Martin Stetter, Siemens AG 1 Statistische und neuronale Lernverfahren

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Statistische und neuronale Lernverfahren Martin Stetter WS 03, Siemens AG 2 Behandelte Themen 0. ,,Motivation": Lernen in Statistik und Biologie 1-Regression 4. Bayes-Belief-Netze Statistische und neuronale Lernverfahren #12;PD Dr. Martin Stetter, Siemens AG

  11. Universitt Hannover Club Apollo 13 Institut fr Photogrammetrie und GeoInformation Januar 2006

    E-Print Network [OSTI]

    Nejdl, Wolfgang

    Universität Hannover Club Apollo 13 Institut für Photogrammetrie und GeoInformation Januar 2006 Club Apollo 13 Seite 1 - Aufgabe Club Apollo 13: Luftbildphotogrammetrie und automatische darstellen. #12;Universität Hannover Club Apollo 13 Institut für Photogrammetrie und GeoInformation Januar

  12. Zentrum fur Technomathematik Fachbereich 3 Mathematik und Informatik

    E-Print Network [OSTI]

    Bremen, Universität

    help to increase safety and lifespan of aircrafts through reducing material fatigue. Since low pressure turbine synchronous vibration lev- els can be reduced with standard trim balancing methods with relatively on the high pressure (HP) rotor (compressor, turbine and coupling). The HP shaft is not accessible after

  13. Impact of Rotor Surface Velocity, Leakage Models and Real Gas Properties on Rotordynamic Force Predictions of Gas Labyrinth Seals

    E-Print Network [OSTI]

    Thorat, Manish R.

    2010-07-14T23:59:59.000Z

    Rotordynamic coefficients of a gas labyrinth seal are assumed to be frequency independent. However, this assumption loses its validity as rotor surface velocity approaches Mach 1. The solution procedure of 1CV model by Childs and Scharrer which...

  14. Diplom-und Studienarbeiten 1999-2010 Institut fr Luft-und Raumfahrt Stand: 25.08.11 Flugmechanik, Flugregelung und Aeroelastizitt

    E-Print Network [OSTI]

    Berlin,Technische Universität

    das unbemannte fliegende System IFSys Mila, Joan Singla 04/13 A. Köthe2 MA Autonomous Flight Control Unmanned Aerial Vehicle (UAV) ALEXIS ­ Konzept und erste Realisierung Köthe, Alexander 04/12 A. Schönfeld2

  15. Compressibility effects on rotor forces in the leakage path between a shrouded pump impeller and its housing

    E-Print Network [OSTI]

    Cao, Nhai The

    1993-01-01T23:59:59.000Z

    COMPRESSIBILITY EFFECTS ON ROTOR FORCES IN THE LEAKAGE PATH BETWEEN A SHROUDED PUMP IMPELLER AND ITS HOUSING A Thesis by NHAI THE CAO Submitted to the Office of Graduate Studies of Texas A8cM University in partial fulfilltnent... of the requirements for the degree of MASTER OF SCIENCE August 1993 Major Subject: Mechanical Engineering COMPRESSIBILITY EFFECTS ON ROTOR FORCES IN THE LEAKAGE PATH BETWEEN A SHROUDED PUMP IMPELLER AND ITS HOUSING A Thesis by NHAI THE CAO Approved...

  16. CHARACTERIZATION OF MECHANICAL PERFORMANCE OF NT154 SILICON NITRIDE MICROTRUBINE ROTORS

    SciTech Connect (OSTI)

    Lin, Hua-Tay [ORNL; Ferber, Mattison K [ORNL; Waters, Shirley B [ORNL; Kirkland, Timothy Philip [ORNL

    2006-01-01T23:59:59.000Z

    This paper summarizes the results on recent component characterization efforts carried out to verify the mechanical reliability of NT154 silicon nitride microturbine rotors manufactured by Saint-Gobain. Mechanical properties of biaxial discs machined from airfoil as well as hub region of microturbine rotors were evaluated by a ball-on-ring test technique. Results showed that the mechanical properties of specimens from airfoils with as-processed surfaces exhibited lower characteristic strength than those machined from the hub region with as-machined surfaces. The differences in mechanical performance and reliability between as-processed components and simple-shaped test coupons appear to arise mainly from differences in strength limiting flaw type and microstructure verified by detailed electron microscopy analysis.

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

    DOE Patents [OSTI]

    Meikrantz, David H.

    2006-12-19T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    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

    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.

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

    E-Print Network [OSTI]

    Ryu, Keun

    2012-02-14T23:59:59.000Z

    .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...

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

    E-Print Network [OSTI]

    Frey, Michael Louis

    1982-01-01T23:59:59.000Z

    were taken at several disk loadings and various model to ground plane distances. The data collected was used to evaluate the horizontal wake component's effect on people by re- lating the experimental velocity profiles to an equivalent uniform... Flow Measurement Equipment. Wake Velocity Versus Distance from Tilt Rotor Wake Velocity Versus Disk Loading Tuft Flow Visualization ? H=3D, 3, 000 RPM Tuft Flow Visualization ? H=2D, 9, 000 RPM Flow Direction Measurement Results ? H=1D 14 20 22...

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

    E-Print Network [OSTI]

    Zutavern, Zachary Scott

    2009-06-02T23:59:59.000Z

    IDENTIFICATION OF ROTORDYNAMIC FORCES IN A FLEXIBLE ROTOR SYSTEM USING MAGNETIC BEARINGS A Dissertation by ZACHARY SCOTT ZUTAVERN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... by ZACHARY SCOTT ZUTAVERN 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, Dara Childs Committee...

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

    E-Print Network [OSTI]

    Andrea Tomadin; Riccardo Mannella; Sandro Wimberger

    2005-12-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

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

    1995-11-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

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

    1996-10-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

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

    1996-11-01T23:59:59.000Z

    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.

  6. Diplomanden-und Doktorandenseminar des Instituts fr Informatik

    E-Print Network [OSTI]

    Zachmann, Gabriel

    Diplomanden- und Doktorandenseminar des Instituts für Informatik Six Sigma im Im üblichen Sinne wird Six Sigma insbesondere in Fertigungsindustrien wie zum Beispiel in der ist Six Sigma nicht nur eine Managementstrategie, die sich ausschlie�lich auf die Fertigungsindustrie

  7. STRUKTUR UND HERKUNFT DER WILDBIENEN-POPULATIONEN AUF FELDERN

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    STRUKTUR UND HERKUNFT DER WILDBIENEN-POPULATIONEN AUF FELDERN DER ZOTTELWICKE IN UNGARN. EIN, Budapest / Ungarn 2 SUMMARY STRUCTURE AND ORIGIN OF HAIRY VETCH POLLINATING WILD BEE POPULATIONS IN HUNGARY- wiesen, die in bestimmten Gebieten Ungarns die Zottelwicke bestäuben. Wegen der übergrossen Häufigkeit

  8. Forschung und EU-Hochschulbro, Technologietransfer September 2014

    E-Print Network [OSTI]

    Nejdl, Wolfgang

    Nachwuchswissenschaftler/innen 4 1.2. LEIT: Information and communication technologies 4 1.2.1. Öffentliche Konsultation zu Programme Chemical Biology of Native Nucleic Acid Modifications (SPP 1784) 13 4.1.4. Volkswagen.1.8. NIH: Research Grants 16 5. Umweltwissenschaften und Energie 16 5.1.1. EU/KIC InnoEnergy: Call

  9. INSTITUT FR ASIEN-UND AFRIKAWISSENSCHAFTEN ZENTRALASIEN-SEMINAR

    E-Print Network [OSTI]

    Peters, Achim

    INSTITUT FÜR ASIEN- UND AFRIKAWISSENSCHAFTEN ZENTRALASIEN-SEMINAR Kyrgyzstan today Youth services for women, migrants and youth in Kyrgyzstan Bolotkan Sydykanov Due to lack of information, education and financial resources, young women in the rural areas of Kyrgyzstan do not properly use health

  10. Macht Musizieren gesund? Zur Herzrate und deren Variabilitt

    E-Print Network [OSTI]

    Widmer, Gerhard

    in Sankt Florian im Sommer 2008 in �sterreich wurden die Herzraten von Klaus Laczika (Pianist und Mediziner Nachhinein nur die Herzdaten für die Auswertung verwendet werden. 1.Klaus Laczika, Klavier 2.Kirill Kobatschenko Violine 3.René Staar, Violine 4.Arkadij Winokurov, Violine 5.Fritz Bauer, Viola 6.Erich Kaufmann

  11. Bachelor's Thesis Hotfile-und Flaschenhals-Erkennung im

    E-Print Network [OSTI]

    Wardetzky, Max

    of those resources is dCache, a mass-storage management system partic- ularly developed for high energy relies on the deployment of efficient and reliable monitoring systems and optimisation techniques. OneBachelor's Thesis Hotfile- und Flaschenhals-Erkennung im dCache-System Hotfile and Bottleneck

  12. Fakultat fur Physik und Astronomie Ruprecht-Karls-Universitat Heidelberg

    E-Print Network [OSTI]

    Aeschbach-Hertig, Werner

    wurden Bodenluftmessungen f¨ur die an der Zehrung beteiligten Gase O2, CO2, CH4 und H2S an zwei permanent and H2S involved in oxygen depletion were performed at two permanent sampling sites in Stuttgart process of relative noble gas enrichment in soil air due to the partial removal of gaseous CO2 produced

  13. 4. Mit Charakterstarke und Integritat ubernommene Verantwortung im "Dritten Reich"

    E-Print Network [OSTI]

    Alsmeyer, Gerold

    Wahlgang (gegen Adolf Hitler und Ernst Th¨almann) erfolgte Wiederwahl er sich sehr stark engagiert hatte am 17. November 1932 zur¨uck. Nach ergebnislosen Verhandlungen mit Hitler wurde Schleicher am 3. De seinem R¨ucken verhandelte je- doch Papen am 22. Januar 1933 im Auftrage Hindenburgs mit Hitler ¨uber

  14. FE-Analysen zur Thermoermdung Test-und Feldzyklen

    E-Print Network [OSTI]

    Berlin,Technische Universität

    LIVE AG 1 -AG 2 FE-Analysen zur Thermoermüdung Test- und Feldzyklen R. Dudek, R. Döring, B #12;LIVE different SAC creep laws: Steady State Creep (after Schubert, SAC405 and Röllig/Wiese SAC xx) Creep properties of SAC 407 show much higher creep resistance than SAC xx SAC 305 bulk averaged values

  15. Die Civil Academy ist ein gemeinsames Programm von BBE und BP Europa SE. Trger und Veranstalter der Civil Academy ist die BBE Geschftsstelle gemeinntzige GmbH.

    E-Print Network [OSTI]

    Reyle, Uwe

    Die Civil Academy ist ein gemeinsames Programm von BBE und BP Europa SE. Träger und Veranstalter der Civil Academy ist die BBE Geschäftsstelle gemeinnützige GmbH. Ausschreibung der 18. Civil Academy Civil Academy ­ Gutes auch gut tun! Du willst mit einer kreativen Idee die Welt zum Besseren verändern

  16. Rotor Design for High Pressure Magic Angle Spinning Nuclear Magnetic Resonance

    SciTech Connect (OSTI)

    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

    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.

  17. Quantum rotor description of the Mott-insulator transition in the Bose-Hubbard model

    SciTech Connect (OSTI)

    Polak, T. P.; Kopec, T. K. [Institute for Low Temperatures and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wroclaw 2 (Poland)

    2007-09-01T23:59:59.000Z

    We present an approach to the Bose-Hubbard model using the U(1) quantum rotor description. The effective action formalism allows us to formulate a problem in the phase only action and obtain analytical formulas for the critical lines. We show that the nontrivial U(1) phase field configurations have an impact on the phase diagrams. The topological character of the quantum field is governed by terms of the integer charges--winding numbers. The comparison of presented results to recently obtained quantum Monte Carlo numerical calculations suggests that the competition between quantum effects in strongly interacting boson systems is correctly captured by our model.

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

    E-Print Network [OSTI]

    De Santiago Duran, Oscar Cesar

    1998-01-01T23:59:59.000Z

    of rotor vibration [m (in)] Coupled imbalance angle of excitation [', rad] = /I -/I. Efl'ective couple imbalance angle of excitation [', md] Remnant couple imbalance angle of excitation [', md] Fast Fourier transform of time response x(r) Pad arc... across the damper land, c is the radial clearance (0. 229 mm, 9 mila), )e is the lubricant viscosity, R is the journal radius (48. 26 mm, 1. 900 in), y is the pad arc extent (0. 907 rad, 52'), and L is the pad axial length (23. 0 mm, 0. 910 in...

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

    SciTech Connect (OSTI)

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

    2012-01-01T23:59:59.000Z

    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.

  20. 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]

    Kumar, Dhruv Dileep

    2011-10-21T23:59:59.000Z

    model with coulomb friction. Dry friction simulations are performed for three separate models depending on the rotor‘s mass disk location with respect to the contact locations. The three models used have (1) Disk at center location (2) Disk at 3...

  1. 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]

    Paris-Sud XI, Université de

    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

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

    SciTech Connect (OSTI)

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

    1992-02-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Wright, A.D.

    1992-08-01T23:59:59.000Z

    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).

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

    SciTech Connect (OSTI)

    Wright, A.D.

    1992-08-01T23:59:59.000Z

    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).

  5. Fatigue crack growth of titanium rotor alloys in vacuum and air

    SciTech Connect (OSTI)

    McClung, R.C.; Lawless, B.H.; Gorelik, M.; Date, C.; Gill, Y.; Piascik, R.S.

    1999-07-01T23:59:59.000Z

    An enhanced life management system for aircraft turbine engine rotors based on probabilistic damage tolerance methods is currently under development by the engine industry and the FAA, with an initial focus on fatigue cracking at hard alpha (HA) defects in titanium. Since HA defects are usually subsurface, any resulting cracks are embedded and hence isolated from the atmosphere (i.e., vacuum-like) for at least some of their life. Fatigue crack growth (GCG) tests have been conducted in vacuum at various temperatures and stress ratios for Ti-6Al-4V and Ti-6Al-2Sn-4Zr-2Mo+Si rotor alloys. A brief study of vacuum levels suggests that pressures of 10{sup {minus}6} Torr are adequate to capture full vacuum effects on FCG rates. Vacuum FCG results are compared with available air data. The vacuum data demonstrate temperature and stress ratio effects comparable to air data. The vacuum and air data exhibit the same growth rates in the upper Paris regime, but apparent thresholds are significantly higher in vacuum than in air.

  6. Traditionelles Bauen und Wohnen der Salar in Nordwest-China

    E-Print Network [OSTI]

    Wagner, Mayke; Flitsch, Mareile; Winterstein, Claudia; Lehmann, Heike; Heuß ner, Karl-Uwe; Ren, Xiaoyan; Xiao, Yongming; Cai, Linhai; Wulf-Rheidt, Ulrike; Tarasov, Pavel; Dwyer, Arienne M.

    2007-01-01T23:59:59.000Z

    aus. Allerdings war zu erkennen, dass viele neuere Bauten mit lokal verfügbaren Baustof fen wie Lehmziegeln oder in moderner Betonbau weise errichtet wurden. Unsere Beobachtungen war fen eine ganze Reihe von Fragen auf: Worin genau bestehen die.... Qinghai. Rechts Haupthaus an der Nordseite, links Westhaus (Foto MW) ABB. 5 Holzrahmenkonstruk tion eines chinesischen Hauses in Lajia, Prov. Qinghai (Foto MW) hingegen Wände einfach und günstig mit lokal ver fügbarem Baumaterial von Laien...

  7. $\\Lambda$(1520)-Produktion in Proton-Proton- und zentralen Blei-Blei-Reaktionen bei 158 GeV pro Nukleon

    E-Print Network [OSTI]

    Markert, C

    2000-01-01T23:59:59.000Z

    $\\Lambda$(1520)-Produktion in Proton-Proton- und zentralen Blei-Blei-Reaktionen bei 158 GeV pro Nukleon

  8. Bernstein Center for Computational Neuroscience (BCCN) Gttingen Georg-August-Universitt Gttingen, Max-Planck-Institut fr Dynamik und Selbstorganisation, Max-Planck-Institut fr biophysikalische Chemie, Max-Planck-Institut fr experimentelle Medizin,

    E-Print Network [OSTI]

    Gollisch, Tim

    die Sehrinde tausendfach wiederholt, bezeichnen Forscher als Pinwheel (deutsch: Windrad), denn Gebiete derselben Orientierungspräferenz treffen an einem Punkt zusammen ­ wie die Flügel eines Spielzeug-Windrades

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

    DOE Patents [OSTI]

    Wetzel, Kyle Kristopher (Lawrence, KS)

    2008-03-18T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Granada, Universidad de

    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

  11. Naturally occurring, optically driven, cellular rotor J. A. Dharmadhikari, S. Roy, A. K. Dharmadhikari, S. Sharma, and D. Mathura)

    E-Print Network [OSTI]

    Sharma, Shobhona

    Naturally occurring, optically driven, cellular rotor J. A. Dharmadhikari, S. Roy, A. K 005, India (Received 10 June 2004; accepted 20 October 2004) We report the conversion of optical energy into mechanical energy by naturally occurring red blood cells (RBCs) placed in an optical trap

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

    E-Print Network [OSTI]

    Le Roy, Robert J.

    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

  13. The Proton-Driven Rotor of ATP Synthase: Ohmic Conductance (10 fS), and Absence of Voltage Gating

    E-Print Network [OSTI]

    Junge, Wolfgang

    The Proton-Driven Rotor of ATP Synthase: Ohmic Conductance (10 fS), and Absence of Voltage Gating portion of F0F1-ATP synthase, F0, translocates protons by a rotary mechanism. Proton conduction by F0-induced voltage jump was monitored by electrochromic absorption transients to yield the unitary conductance of F0

  14. MasterProof The Proton-Driven Rotor of ATP Synthase: Ohmic Conductance (10 fS),

    E-Print Network [OSTI]

    Steinhoff, Heinz-Jürgen

    MasterProof The Proton-Driven Rotor of ATP Synthase: Ohmic Conductance (10 fS), and Absence ABSTRACT The membrane portion of F0F1-ATP synthase, F0, translocates protons by a rotary mechanism. Proton conduction by F0 was studied in chromatophores of the photosynthetic bacterium Rhodobacter capsulatus

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

    DOE Patents [OSTI]

    Wetzel, Kyle Kristopher

    2014-06-24T23:59:59.000Z

    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.

  16. PD Dr. Martin Stetter, Siemens AG 1 Lernen von Datenmodellen: Fehlerminimierung und Regularisierung

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Lernen von Datenmodellen: Fehlerminimierung und Regularisierung: Fehlerminimierung #12;PD Dr. Martin Stetter, Siemens AG 2 Maximum-Likelihood und Fehlerminimierung · Likelihood: Fehlerfunktionen #12;PD Dr. Martin Stetter, Siemens AG 3 · Def. Fehlerfunktion: 0))|(,,( wxfyxl yxyyx ,0),,( =lmit

  17. FASZINATION FORSCHUNG BIOLOGISCHE KYBERNETIK Durch die Gassen des antiken Pompeji schicken MARC ERNST und

    E-Print Network [OSTI]

    auf die Lauffläche und geht stramm voran. Er tritt auf der Stelle, wie im Fitness- studio. Doch dieses Stadt am Fu�e des Vesuvs ­ und tritt doch eigent- lich nur auf der Stelle. Eine ganze Turnhalle für ein

  18. Amtsblatt des Thringer Kultusministeriums und des Thringer Ministeriums fr Wissenschaft, Forschung und Kunst N r. 9/2002 Friedrich-Schiller-Universitt Jena

    E-Print Network [OSTI]

    Knüpfer, Christian

    tritt am ersten Tage des auf ihre Veröffentlichung im Gemeinsamen Amtsblatt des Thüringer, Festkörperphysik, Kern- und Elementarteilchenphysik) an." 3. Diese �nderung tritt am ersten Tage des auf ihre

  19. Das Mitteilungsblatt erscheint jeweils am 1. und 3. Mittwoch jeden Monats. Eigentmer, Herausgeber, Vervielfltigung und Vertrieb: Zentrale Verwaltung der Universitt Innsbruck, Innrain 52, A-6020

    E-Print Network [OSTI]

    Middeldorp, Aart

    Studienplan für die neue Studienrichtung ,,Informatik" an der Universität Innsbruck 532. Reform des. Reform des Studienplanes für ein Bakkalaureats- und Magister-Studium Kommunikationswissenschaft an der Universität Salzburg - Begutachtungsverfahren 534. Reform des Studienplanes für das Diplomstudium Architektur

  20. Rotor Speed Dependent Yaw Control of Wind Turbines Based on Empirical Data

    SciTech Connect (OSTI)

    Kragh, K. A.; Fleming, P. A.

    2012-01-01T23:59:59.000Z

    When extracting energy from the wind using horizontal-axis upwind wind turbines, a primary condition for maximum power yield is the ability to align the rotor axis with the dominating wind direction. Attempts have been made to improve yaw alignment by applying advanced measurement techniques such as LIDARs. This study is focused at assessing the current performance of an operating turbine and exploring how the yaw alignment can be improved using existing measurements. By analyzing available turbine and met mast data a correction scheme for the original yaw alignment system is synthesized. The correction scheme is applied and it is seen that with the correction scheme in place, the power yield below rated is raised 1-5 percent. Furthermore, results indicate that blade load variations are decreased when the correction scheme is applied. The results are associated with uncertainties due to the amount of available data and the wind site climate. Further work should be focused at gathering more experimental data.

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

    E-Print Network [OSTI]

    Qifang Zhao; Cord A. Muller; Jiangbin Gong

    2014-05-27T23:59:59.000Z

    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.

  2. Characterization of winds through the rotor plane using a phased array SODAR and recommendations for future work.

    SciTech Connect (OSTI)

    Deola, Regina Anne

    2010-02-01T23:59:59.000Z

    Portable remote sensing devices are increasingly needed to cost effectively characterize the meteorology at a potential wind energy site as the size of modern wind turbines increase. A short term project co-locating a Sound Detection and Ranging System (SODAR) with a 200 meter instrumented meteorological tower at the Texas Tech Wind Technology Field Site was performed to collect and summarize wind information through an atmospheric layer typical of utility scale rotor plane depths. Data collected identified large speed shears and directional shears that may lead to unbalanced loads on the rotors. This report identifies suggestions for incorporation of additional data in wind resource assessments and a few thoughts on the potential for using a SODAR or SODAR data to quantify or investigate other parameters that may be significant to the wind industry.

  3. Stand: 25.10.2013 Hochschulleitung und Verwaltung Prsident Prof. Dr. Stefan Leible(5200)

    E-Print Network [OSTI]

    Ullmann, G. Matthias

    Prof. Dr. Hans-Werner Schmidt (3200) Kanzler Dr. Markus Zanner (5210) Briefanschrift: 95440 Bayreuth Zanner (5335) Vertretung: N.N. Referat A/1 Mathematik, Physik und Informatik VAe Natascha Mogalle (3197

  4. Curriculum 2013 -Vertiefungsgebiet: Tiefenpsychologisch fundierte Psychotherapie Institut fr Psychotherapeutische Aus-und Weiterbildung (IPAW)

    E-Print Network [OSTI]

    Manstein, Dietmar J.

    .-Psych. Susanne Bauer Dr. Dipl.-Psych. Albina Zeef 18.02.2013 Hysterie als Modus der Konfliktverarbeitung und als am Beispiel der konzentrativen Bewegungstherapie Prof. Dr. Dipl.-Psych. Klaus-Peter Seidler 11

  5. 1. Einfhrung in die Stabilitt dnnwandiger Strukturen 1.1.Einleitung und Motivation I

    E-Print Network [OSTI]

    Berlin,Technische Universität

    II Beispiel 2: Plattenbeulen Oberhalb der Last Pcrit tritt Beulen ein Die Lösung ist ebenfalls ein dünnwandiger Strukturen 1.1.Einleitung und Motivation III Beispiel 3: Zylinderbeulen Ab einer Last Pcrit tritt

  6. Studien-und Prfungsordnung fr den Masterstudiengang Wirtschaftsmathematik an der Fakultt II -Mathematik

    E-Print Network [OSTI]

    Nabben, Reinhard

    Inkrafttreten, Au�erkrafttreten (1) Diese Ordnung tritt am Tag nach ihrer Veröffentlichung im Amtlichen/2006) tritt spätestens nach Ablauf von acht Semestern nach Inkrafttreten der vorliegenden Studien- und

  7. Anlage 1.1 zur Diplomprfungsordnung fr den Studiengang Wirtschaftsingenieurwesen Technische Fachrichtung Elektrotechnik und Informationstechnik

    E-Print Network [OSTI]

    Knobloch,Jürgen

    . Mathematik und Physik Mathematik Physik PLm (30 min) PLm (30 min) 22 15 7 3. 2. Informatik PLs (180 min) 8 1. Praktikum Grundlagen der Automatisierungstechnik PLs (180 min), PLm (30) PLs (120 min) T (Prakt.) PLs (60

  8. Eishhlen stellen noch relativ wenig untersuchte Naturphnomene dar. Alter, Bildung und Fortbestand

    E-Print Network [OSTI]

    Brückl, Ewald

    #12;Eishöhlen stellen noch relativ wenig untersuchte Naturphänomene dar. Alter, Bildung und verschiedenster Methoden zur Untersuchung des Eises dar, wobei Die Höhle / 58. Jg. / Heft 1-4/2007 3

  9. AM ABEND DES 20. SEPTEMBER 2002 lste sich eine gigantische Eis-und Steinlawine vom Nord-

    E-Print Network [OSTI]

    Kääb, Andreas

    #12;AM ABEND DES 20. SEPTEMBER 2002 löste sich eine gigantische Eis- und Steinlawine vom Nord- hang Eis nur schwer aus- zumachen: ein Teil der Gletscherflächen ist stets mit Schutt bedeckt. ASTER hat

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

    SciTech Connect (OSTI)

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

    1989-11-01T23:59:59.000Z

    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.

  11. Characterizing the cracking behavior of hard alpha defects in rotor grade Ti-6-4 alloy

    SciTech Connect (OSTI)

    McKeighan, P.C.; Perocchi, L.C.; Nicholls, A.E.; McClung, R.C.

    1999-07-01T23:59:59.000Z

    A program sponsored by the FAA is currently underway to develop predictive tools utilizing state-of-the-art damage tolerance and probabilistic methodologies that can be used in the life management of high energy rotors. The program is focusing on fatigue crack nucleation and growth from anomalies in titanium alloys known as hard alpha, an inclusion-like feature that can occur during the melting process. In the work detailed in this paper, two sizes of synthetic hard alpha defects are created in Ti-6Al-4V and subjected to static and fatigue loading. In addition, two different geometry anomalies are considered: one intersecting the surface of the specimen and another embedded internally. A number of crack detection transducers are used and shown to compare well to results from visual inspections on the surface defect specimens. These surface specimens tend to exhibit defect cracking at relatively low stress levels, typically on the order of 5--10 ksi. Although it appeared from the crack detection transducer that little or no cracking occurred in the interior anomaly specimens given an applied static stress of 100 ksi, subsequent metallographic sectioning demonstrated more extensive cracking and damage. The observed cracking behavior indicates that the diffusion zone may play an important role in the structural integrity of the hard alpha anomalies.

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

    SciTech Connect (OSTI)

    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

    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.

  13. Aufgabe 4-8: Luft tritt mit 300 K und 100 kPa in eine Gasturbine mit Abwrmenutzung ein. Im Verdichter der Gasturbine wird die Luft auf 800 kPa und 580 K gebracht. Der

    E-Print Network [OSTI]

    Peters, Norbert

    �bung 10: Aufgabe 4-8: Luft tritt mit 300 K und 100 kPa in eine Gasturbine mit Abwärmenutzung ein einen Wirkungsgrad von 72% und die Luft tritt mit 1200 K in die Turbine ein. Bei einem adiabten. Luft tritt in den Kompressor mit 300 K und 14 kg/s ein. In der Brennkammer wird die Luft auf 1500 K

  14. Das Mitteilungsblatt erscheint jeweils am 1. und 3. Mittwoch jeden Monats. Eigentmer, Herausgeber, Vervielfltigung und Vertrieb: Zentrale Verwaltung der Universitt Innsbruck, Innrain 52, A-6020

    E-Print Network [OSTI]

    Breu, Ruth

    2000/2001 Ausgegeben am 16. Mai 2001 21. Stück 438. Reform des Studienplans für die Studienrichtung Begutachtungsverfahren gemäß § 14 UniStG 439. Reform des Studienplanes für das Doktoratsstudium der Sozial- und Wirtschaftswissenschaften an der Karl-Franzens-Universität Graz - Begutachtungsverfahren 440. Reform des Studienplanes für

  15. Das Mitteilungsblatt erscheint jeweils am 1. und 3. Mittwoch jeden Monats. Eigentmer, Herausgeber, Vervielfltigung und Vertrieb: Zentrale Verwaltung der Universitt Innsbruck, Innrain 52, A-6020

    E-Print Network [OSTI]

    Middeldorp, Aart

    gemäß § 14 UniStG 79. Reform des Studienplans für das Diplomstudium Physik an der Karl-Franzens- Universität Graz 80. Reform des Studienplans für die Studienrichtung Volkskunde an der Karl-Franzens- Universität Graz 81. Reform des Studienplanes Sozialwirtschaft als sozial- und wirtschaftswissenschaftliche

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

    DOE Patents [OSTI]

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

    2000-01-01T23:59:59.000Z

    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.

  17. Anforderungen an den Energie-und Leistungsumsatz der POWER TO GAS-Einheit im MICRO GRID eines industriellen Produktionsstandortes

    E-Print Network [OSTI]

    Paderborn, Universität

    Anforderungen an den Energie- und Leistungsumsatz der POWER TO GAS- Einheit im MICRO GRID eines MICRO GRID angeschlossenen elektrischen Energiespeicher und eine ,,POWER TO GAS" -Anlage kompensiert werden. Die ,,POWER TO GAS"­ Anlage entnimmt dem MICRO GRID überschüssige elektrische Energie zur

  18. zentrum hygiene und humangenetik ABTEIlUNG TRANSFUSIONSMEDIZIN centre for hygiene and human Genetics DEPARTMENT OF TRANSFUSION MEDICINE

    E-Print Network [OSTI]

    Gollisch, Tim

    zentrum hygiene und humangenetik ABTEIlUNG TRANSFUSIONSMEDIZIN centre for hygiene and human@med.uni-goettingen.de www.transfusionsmedizin.med.uni-goettingen.de #12;212 Zentrum Hygiene und Humangenetik ABteilunG trAnsfusionsmedizin Centre for Hygiene and Human Genetics depArtment of trAnsfusion medicine Einleitung Die Aufgabe der

  19. Hiermit melde ich mich/mein Kind verbindlich fr den Musikworkshop in der Villa Denis an und akzeptiere die

    E-Print Network [OSTI]

    Berns, Karsten

    Abendessen plus Getränke mit Música en Vivo in Kooperation mit der Emmerich-Smola-Musikschule und wissenschaftliche Tagungen zur Verfügung. In Kooperation mit: Emmerich-Smola-Musikschule und Musikakademie Kaiserslautern emmerich-smola.musikschule@kaiserslautern.de Telefon: 0631 365-2263 Sie suchen ein interessantes

  20. Actual trends of decentralized CHP integration -- The Californian investment subsidy system and its implication for the energy efficiency directive (Aktuelle Trends in der dezentralen KWK Technologie Integration -- Das kalifornische Fordermodell und dessen Implikation fur die Endenergieeffizienzrichtlinie)

    E-Print Network [OSTI]

    Stadler, Michael; Lipman, Tim; Marnay, Chris

    2008-01-01T23:59:59.000Z

    Sinne – wie in einem Verbrennungsmotor – statt und dadurchVergleich zu einem Verbrennungsmotor. Der Hauptunterschied

  1. Aufgabe 3-7: Luft tritt mit 1 = 2,21 kg/m und v1 = 40 m/s kontinuierlich in eine Dse ein und verlsst diese mit 2 = 0,762 kg/m und v2 = 180 m/s. Die Einlassflche der Dse betrgt 90

    E-Print Network [OSTI]

    Peters, Norbert

    Aufgabe 3-7: Luft tritt mit 1 = 2,21 kg/m³ und v1 = 40 m/s kontinuierlich in eine Düse ein und, 800 kPa) tritt mit 10 m/s in eine Düse ein (siehe Abbildung 1). In der Düse verliert der Dampf Wärme

  2. (Anti-)BRST and (Anti-)co-BRST Symmetries of a System of Rigid Rotor: Augmented Supervariable Approach

    E-Print Network [OSTI]

    T. Bhanja; N. Srinivas; R. P. Malik

    2015-04-16T23:59:59.000Z

    We derive the nilpotent (anti-)BRST and (anti-)co-BRST symmetry transformations for the system of a rigid rotor by exploiting the (anti-)BRST and (anti-)co-BRST restrictions on the (anti-)chiral supervariables that are defined on the appropriately chosen (1, 1)-dimensional super-submanifolds of the general (1, 2)-dimensional supermanifold on which, our 1D system of a rigid rotor is considered within the framework of augmented supervariable approach. The general (1, 2)-dimensional supermanifold is parameterized by the superspace coordinates (t, \\theta, \\bar\\theta) where t is the bosonic evolution parameter and (\\theta, \\bar\\theta) are the Grassmannian variables which obey the standard relationships: {\\theta}^2 = {\\bar\\theta}^2 = 0, {\\theta}\\,{\\bar\\theta} + {\\bar\\theta}\\,{\\theta} = 0. One of the key results of our present investigation is the observation that we do not require the theoretical strength of (dual-)horizontality conditions anywhere (while deriving the above symmetries). We also provide the geometrical interpretations for the symmetry invariance and nilpotency property. Furthermore, in our present endeavor, we concisely offer some relevant remarks on the property of absolute anticommutativity.

  3. Enclosure Requirements to Protect Personnel from Spinning Rotor Frailures at the Power Electronics and Electric Machinery Research Center

    SciTech Connect (OSTI)

    McKeever, John W [ORNL

    2007-08-01T23:59:59.000Z

    Performance evaluation of electric motors is a major function of the Power Electronics and Electric Machinery Research Center (PEEMRC). Normally these motors have a fixed wire-wound stator and a rotating rotor, which may have conductors embedded in a ferromagnetic core (induction motors), magnets mounted on the surface of the ferromagnetic core with a thin metal or composite cylinder or ring to hold them in place, or magnets embedded in the ferromagnetic core. Most of the work currently involves the last two permanent magnet (PM) configurations. Although the stator of a radial-gap motor can absorb energy from many of the fragments ejected from the rotor during operation, the stator of an axial-gap motor is not positioned to provide significant protection. The housing of each motor can also absorb some of the energy. The most conservative approach, however, is to assume that all fragments from the rotor must be contained by a protective enclosure. An ideal enclosure is transparent. Manufacturers of such plastics as Lexan, Tuffak, and Cyrolon sell different variations of transparent enclosure material. Lexan is a polycarbonate sheet. Lexgard{reg_sign} is a penetration resistant material made by layering polycarbonate material between pieces of ordinary glass. A fragment striking a sheet of enclosure material will pierce the surface layer, but the layered polycarbonate-glass material is able to absorb the fragment's energy before it completes penetration. Tuffak{reg_sign} is Lexan polycarbonate. Cyrolon{reg_sign} bullet resistant material is acrylic sheet. The ability of the enclosure to stop a fragment depends on its thickness as well as the penetration capability of the fragment; for example, a lead fragment has much less penetrating capability than a steel fragment. Enclosure thicknesses are commercially available to provide several levels of protection. These levels depend on the momentum of the fragments and have been evaluated for some common types of ammunition. This summary quantifies four typical worst-case fragments which have maximum translational kinetic energy when ejected from a rotating annulus. (1) The first fragment is released from a rotating annular titanium ring. (2) The second fragment is a magnet released from the Oak Ridge National Laboratory's (ORNL's) 30-kW axial-gap PM motor. Analysis of the second fragment which is like a segment of half-angle, {alpha}, from a thin annular ring is similar to that of the titanium ring segment except that the angle is 10{sup o} instead of 133{sup o}. (3) The third fragment is a magnet from the radial-gap 6-kW fractional-slot surface-mounted PM (SPM) motor with concentrated windings. Analysis of the third fragment is similar to the analysis of the second fragment. (4) The fourth fragment is a 133{sup o} segment of an entire rotor which assumes that the laminates and magnets in the rotor fail as a single fragment, truly a worst case assumption.

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

    E-Print Network [OSTI]

    Blake, Sarah Anne

    2009-05-15T23:59:59.000Z

    The turbine blade platform can be protected from hot mainstream gases by injecting cooler air through the gap between stator and rotor. The effectiveness of this film cooling method depends on the geometry of the slot, the quantity of injected air...

  5. 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)

    Hughes, S.

    2011-02-01T23:59:59.000Z

    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.

  6. 21`eme Congr`es Francais de Mecanique Bordeaux, 26 au 30 ao^ut 2013 Etude aerodynamique instationnaire d'un rotor eolien de

    E-Print Network [OSTI]

    Boyer, Edmond

    ´erodynamique instationnaire d'un rotor ´eolien de Savonius : mise en ´evidence de l'influence de la portance Pauline BUTAUDa'´eolienne Savonius, notamment en comparant les r´esultats statiques instationnaires (´eolienne immobile) et, l'´eolienne Savonius est couram- ment dite de train´ee car son couple serait maximal lorsque les

  7. Aufgabe S1 F10 Die Bauteile 1,2,3 sind gelenkig miteinander verbunden, in A und B gelagert und

    E-Print Network [OSTI]

    Peters, Norbert

    (E) = 0 Cy 8a + B 4a = 0 Cy = - 1 2 B M(D) = 0 Cy 2a - Cx 2a + Ay 4a = 0 Cx = Cy + 2Ay = - 1 2 B + 2Ay sin 4 - Cx cos 4 - Cy sin 4 Fy = 0 Q = +Ax sin 4 - Ay cos 4 - Cx sin 4 - Cy cos 4 M=0 Mb = Ax2a - Ay2a Schnittreaktionen im Schnitt unterhalb des Gelenkes (obige Formeln ohne Cx und Cy): Fx

  8. Short term thermal energy storage Institut fr Kernenergetik und Energiesysteme, University of Stuttgart, Stuttgart, FRG

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    477 Short term thermal energy storage A. Abhat Institut für Kernenergetik und Energiesysteme the problem of short term thermal energy storage for low temperature solar heating applications. The techniques of sensible and latent heat storage are discussed, with particular emphasis on the latter

  9. APuZAus Politik und Zeitgeschichte 10/2010 8. Mrz 2010

    E-Print Network [OSTI]

    Franz, Sven Oliver

    Millenniums- erklärung mit acht konkreten Millenni- umsentwicklungszielen (MEZ) an. 2 Diese bil- den seitdem Globalisierung und die weltweite Entwicklungspolitik. Die MEZ be- ziehen sich auf Aspekte der ökonomischen, so weltweiten Ent- wicklungspartnerschaft. 3 Die Verständigung auf die acht MEZ war ein großer Schritt

  10. Usage Mining for the World Wide Web WenChen Hu, wenchen@cs.und.edu

    E-Print Network [OSTI]

    Hu, Wen-Chen

    Usage Mining for the World Wide Web Wen­Chen Hu, wenchen@cs.und.edu Department of Computer Science@mail.tku.edu.tw Department of Information Engineering, Tamkang University, Tamsui, Taiwan ABSTRACT Web usage mining is used an overview and analysis of current Web usage mining technologies and systems. A Web usage mining system

  11. KIT Universitt des Landes Baden-Wrttemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft

    E-Print Network [OSTI]

    Buchmann, Erik

    Awareness"4 Dr.-Ing. Erik Buchmann - Kapitel 9: Smart Environments Smart Environments das "Aware Home" vom Computing ­ Smart Environments Erik Buchmann (buchmann@kit.edu) #12;IPD, Nachwuchsgruppe ,,Privacy Awareness"2 Dr.-Ing. Erik Buchmann - Kapitel 9: Smart Environments Inhalte und Lernziele dieses Kapitels Smart

  12. KIT Universitt des Landes Baden-Wrttemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft

    E-Print Network [OSTI]

    Buchmann, Erik

    Awareness"4 Dr.-Ing. Erik Buchmann - Kapitel 10: Smart Environments Smart Environments das "Aware Home" vom Computing ­ Smart Environments Erik Buchmann (buchmann@kit.edu) #12;IPD, Nachwuchsgruppe ,,Privacy Awareness"2 Dr.-Ing. Erik Buchmann - Kapitel 10: Smart Environments Inhalte und Lernziele dieses Kapitels

  13. On Path diagrams and Stirling permutations Institut fur Diskrete Mathematik und Geometrie

    E-Print Network [OSTI]

    Kuba, Markus

    On Path diagrams and Stirling permutations M. Kuba Institut f¨ur Diskrete Mathematik und Geometrie of this article is to extend the notion of local types to k-Stirling permutations, establish a relation diagrams. In the case of the classical Stirling permutations, we give an alternative continued fraction

  14. On Path diagrams and Stirling permutations Institut fur Diskrete Mathematik und Geometrie

    E-Print Network [OSTI]

    Kuba, Markus

    On Path diagrams and Stirling permutations M. Kuba Institut f¨ur Diskrete Mathematik und Geometrie is to introduce the notion of local types in k-Stirling permutations, to relate these local types with nodes types, Stirling permutations, Increasing trees, local types, formal power series 2000 Mathematics Subject

  15. NANOTECHNOLOGY CENTER Eine Partnerschaft in Nanotechnologie von IBM Research und ETH Zrich

    E-Print Network [OSTI]

    Cachin, Christian

    NANOTECHNOLOGY CENTER Eine Partnerschaft in Nanotechnologie von IBM Research und ETH Zürich and Rohrer Nanotechnology Center is part of a strategic partnership in nanosciences with ETH Zurich, one FACT SHEET Above: The campus of IBM Research - Zurich Right: The Binnig and Rohrer Nanotechnology

  16. bersicht ber evaluierte Lehrveranstaltungen und Dozierende der Lehreinheit Rechtswissenschaften Seite 1 von 6 Anrede Vorname Name Anmel

    E-Print Network [OSTI]

    Osnabrück, Universität

    Herr Dr. Carsten Bödecker Rechtswissenschaften Herr Dr. Klaus Brinkmann Rechtswissenschaften Rechtswissenschaften Herr Dr. Andreas Bauer ja ja Papier FESEM Seminar zum Familien und Erbrecht Rechtswissenschaften Herr KlausDieter Benner ja ja Papier FEVOR Kapitalmarktstrafrecht Rechtswissenschaften Herr Dr. Ge

  17. In-situ measurement of ground impedances Von der Fakultt fr Mathematik und Naturwissenschaften der Carl von Ossietzky

    E-Print Network [OSTI]

    Vormann, Matthias

    In-situ measurement of ground impedances Von der Fakultät für Mathematik und Naturwissenschaften .............................................................................................22 Summary: In-situ impedance measurement.Definitions..........................................................................................................................11 VI.Surface impedance measurement methods

  18. Anti-optimisation applied to the analysis of rotor/stator interaction Note: this article is part of the proceedings of the Turbo Expo 2013 conference (paper GT2013-

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Anti-optimisation applied to the analysis of rotor/stator interaction Note: this article is part in the design process, so there is a need for efficient and practical computational models that can predict

  19. 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]

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

    2014-10-28T23:59:59.000Z

    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.

  20. ... als erstes bilden wir eine 68,6 km lange Menschenkette! Wenn wir uns an den Hnden fassen, knnen wir die Standorte der TUM in Mnchen, Garching und Weihenstephan verbin-

    E-Print Network [OSTI]

    Heiz, Ulrich

    , können wir die Standorte der TUM in München, Garching und Weihenstephan verbin- den ­ und schaffen es in Munich, Garching and Weihenstephan ­ and even reach as far as the airport. From there, we could jump

  1. Sommer 2011 Erstellt am: 26. September 2011 Fakultt fr Mathematik, Physik und Informatik

    E-Print Network [OSTI]

    Dettweiler, Michael

    Sommer 2011 Erstellt am: 26. September 2011 Seite 1 Fakultät für Mathematik, Physik und Informatik:00 - 10:00 woch NW II - S 79 Bauer-Catanese,Ingrid Fragestunde zur Linearen Algebra II #12;Sommer 2011,Wolfgang Di 08:00 - 10:00 woch NW II - H 19 Neidhardt,Wolfgang #12;Sommer 2011 Erstellt am: 26. September 2011

  2. Modulliste Bachelor EI 02/14 ANLAGE 1: Pflichtmodule der Grundlagen-und Orientierungsprfung

    E-Print Network [OSTI]

    Kuehnlenz, Kolja

    Modulliste Bachelor EI 02/14 ANLAGE 1: Pflichtmodule der Grundlagen- und Orientierungsprüfung/Ü/P SWS Prüfungsart/Dauer Sprache EI0001 Schaltungstechnik 1 WS 6 4/2/0 6 s, 90 min D PH9009 Physik für Elektroingenieure WS 6 4/2/0 6 s, 90 min D EI0006 Digitaltechnik WS 5 3/2/0 5 s, 60 min D MA9409 Lineare Algebra WS

  3. Sensitivity of transitions in internal rotor molecules to a possible variation of the proton-to-electron mass ratio

    SciTech Connect (OSTI)

    Jansen, Paul; Ubachs, Wim; Bethlem, Hendrick L. [Institute for Lasers, Life and Biophotonics, VU University Amsterdam, De Boelelaan 1081, NL-1081 HV Amsterdam (Netherlands); Kleiner, Isabelle [Laboratoire Interuniversitaire des Systemes Atmospheriques (LISA), CNRS UMR 7583 et Universites Paris 7 et Paris Est, 61 avenue du General de Gaulle, FR-94010 Creteil Cedex (France); Xu, Li-Hong [Department of Physics and Centre for Laser, Atomic, and Molecular Sciences, University of New Brunswick, Saint John, New Brunswick, Canada E2L 4L5 (Canada)

    2011-12-15T23:59:59.000Z

    Recently, methanol was identified as a sensitive target system to probe variations of the proton-to-electron mass ratio {mu}[Jansen et al., Phys. Rev. Lett. 106, 100801 (2011)]. The high sensitivity of methanol originates from the interplay between overall rotation and hindered internal rotation of the molecule; that is, transitions that convert internal rotation energy into overall rotation energy, or vice versa, have an enhanced sensitivity coefficient, K{sub {mu}}. As internal rotation is a common phenomenon in polyatomic molecules, it is likely that other molecules display similar or even larger effects. In this paper we generalize the concepts that form the foundation of the high sensitivity in methanol and use this to construct an approximate model which makes it possible to estimate the sensitivities of transitions in internal rotor molecules with C{sub 3v} symmetry, without performing a full calculation of energy levels. We find that a reliable estimate of transition sensitivities can be obtained from the three rotational constants (A, B, and C) and three torsional constants (F, V{sub 3}, and {rho}). This model is verified by comparing obtained sensitivities for methanol, acetaldehyde, acetamide, methyl formate, and acetic acid with a full analysis of the molecular Hamiltonian. Of the molecules considered, methanol is by far the most suitable candidate for laboratory and cosmological tests searching for a possible variation of {mu}.

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

    SciTech Connect (OSTI)

    Shen, Chen

    2014-01-20T23:59:59.000Z

    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.

  5. 7, 1481314894, 2007 Lightning activity in

    E-Print Network [OSTI]

    Boyer, Edmond

    Atmosph¨are, Deutsches Zentrum f¨ur Luft- und Raumfahrt (DLR), Oberpfaffenhofen, Germany 2 Flugabteilung of Munich, Germany 4 Institute for Atmospheric and Climate Science, ETH Zurich, Switzerland 5 Norwegian and Research, D¨ubendorf, Switzerland now at: Institut f¨ur Physik der Atmosph¨are, Deutsches Zentrum f

  6. Atmos. Chem. Phys., 8, 921953, 2008 www.atmos-chem-phys.net/8/921/2008/

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . Pinto Jr.6, and R. Calheiros7 1Institut f¨ur Physik der Atmosph¨are, Deutsches Zentrum f¨ur Luft- und Science, ETH Zurich, Switzerland 5Norwegian Institute for Air Research (NILU), Atmosphere and Climate and Research, D¨ubendorf, Switzerland **now at: Institut f¨ur Physik der Atmosph¨are, Deutsches Zentrum f

  7. Hermann Witekinds Christlich bedencken und die Entstehung des Faustbuchs von 1587 Herausgegeben von Frank Baron In Verbindung mit einer kritischen Edition des Textes von 1585 von Benedikt Sommer

    E-Print Network [OSTI]

    Baron, Frank

    2009-01-01T23:59:59.000Z

    Herausgegeben von Frank Baron In Verbindung mit einer kritischen Edition des Textes von 1585 von Benedikt Sommer Series: Studium Literarum 17 Publisher: Weidler Buchverlag Year: 2009... ---------------------------------------------------------------------------------------------------------------------------------- Table of Contents: Frank Baron, Einleitung (Introduction) I. Benedikt Sommer, Christlich bedencken und erjnnerung von Zauberey, kritische Edition II. Untersuchungen (Essays) Benedikt Sommer, Das Leben und Werk Hermann Witekinds Otto Ulbricht...

  8. 3 Grundlagen der Darstellung und Verarbeitung von Information 3.2 Codes 3-44(67) Beweis: Sei zk() = -1...---1...10.

    E-Print Network [OSTI]

    Arndt, Holger

    () = -1...---1...10. 1. Fall: 0, also zk() = und -1 = 0. Tritt Ã?berlauf ein, so ist 2 2-1 , also 2--1 . Also ist eine der Ziffern -1, ..., --1 gleich 1, aber -1 = 0. Tritt kein Ã?berlauf ein, so sind alle, also zk() = 2 + und -1 = 1. Tritt Ã?berlauf ein, so ist 2

  9. Desde 1953, SSL Schwellenwerk und Steuerungstechnik Linz GmbH es un fabricante lder de traviesas de hormign pretensado para los ferrocarriles

    E-Print Network [OSTI]

    Rey Juan Carlos, Universidad

    Desde 1953, SSL Schwellenwerk und Steuerungstechnik Linz GmbH es un fabricante líder de traviesas de presentación, en inglés o alemán, a: SSL Schwellenwerk und Steuerungstechnik Linz GmbH, A-4030 Linz Attn. Sra. Nicole Preuer E-mail: mail@ssl-linz.at #12;

  10. Desde 1953, SSL Schwellenwerk und Steuerungstechnik Linz GmbH es un fabricante lder de traviesas de hormign pretensado para los ferrocarriles

    E-Print Network [OSTI]

    Rey Juan Carlos, Universidad

    Desde 1953, SSL Schwellenwerk und Steuerungstechnik Linz GmbH es un fabricante líder de traviesas presentación, en inglés o alemán, a: SSL Schwellenwerk und Steuerungstechnik Linz GmbH, A-4030 Linz Attn. Sra. Nicole Preuer E-mail: mail@ssl-linz.at #12;

  11. Superconductivity is a phenomenon of matter where below a defined temperature

    E-Print Network [OSTI]

    , Berkeley, USA 2 BESSY 3 University of California, San Diego, USA 4 Deutsches Zentrum für Luft- und radiation (CSR) recently provided at BESSY [5] (see page 49) we have been able to extend References: [1] P

  12. 3, 32673299, 2003 Relative humidity and

    E-Print Network [OSTI]

    Deutsches Zentrum f¨ur Luft- und Raumfahrt (DLR), Institut f¨ur Physik der Atmosph¨are (IPA, Sweden 3 Dalhousie University, Department of Physics and Atmospheric Science, Halifax, Nova Scotia

  13. Deutsches Elektronen-Synchrotron DESY Interne Verffentlichung

    E-Print Network [OSTI]

    Autor See other side for an English version Zu Beginn des Jahres 2008 tritt ein neues Urheberrecht.1.2008 in Kraft tritt, wird sich das ändern (§ 137 l Abs. 1 UrhG). In Fällen, in denen ursprünglich alle, übertragen, bevor das neue Urheberrecht in Kraft tritt, also bis spätestens zum 31.12.2007. Dafür reicht die

  14. DBE Deutsche Bioenergie AG | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovationinConcentratingEnergyCoosaPageEnergy Information NewDBE

  15. Cold collisions of highly rotationally excited CO{sub 2} with He: The prospects for cold chemistry with super-rotors

    SciTech Connect (OSTI)

    Al-Qady, W. H.; Forrey, R. C.; Yang, B. H.; Stancil, P. C.; Balakrishnan, N. [Department of Physics and Astronomy and the Center for Simulational Physics, University of Georgia, Athens, Georgia 30602 (United States); Department of Physics, The Pennsylvania State University, Berks Campus, Reading, Pennsylvania 19610 (United States); Department of Physics and Astronomy and the Center for Simulational Physics, University of Georgia, Athens, Georgia 30602 (United States); Department of Chemistry, University of Nevada-Las Vegas, Las Vegas, Nevada 89154 (United States)

    2011-11-15T23:59:59.000Z

    Building on recent advances in ultrafast lasers and methods to slow molecules, an experiment is proposed to produce translationally cold CO{sub 2} super-rotors (j{approx}200) by combining an optical centrifuge with helium-buffer-gas cooling. Quantum mechanical calculations of the complex scattering length for He-CO{sub 2} collisions demonstrate that the efficiency of rotational quenching decreases rapidly with increasing rotational excitation j in the ultracold regime. Extrapolating to helium cryogenic temperatures, rotational quenching is predicted to remain inefficient up to {approx}1 K, allowing for the possible creation of a beam of translationally cold, rotationally hot molecules.

  16. Geothermie Unterhaching GmbH und Co KG | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdf Jump1946865°,Park,2005)EnergyAmatitlanGmbH und Co KG Jump to: navigation,

  17. The Crystal Structure of the Extracellular 11-heme Cytochrome UndA Reveals a Conserved 10-heme Motif and Defined Binding Site for Soluble Iron Chelates.

    SciTech Connect (OSTI)

    Edwards, Marcus; Hall, Andrea; Shi, Liang; Fredrickson, Jim K.; Zachara, John M.; Butt, Julea N.; Richardson, David; Clarke, Thomas A.

    2012-07-03T23:59:59.000Z

    Members of the genus Shewanella translocate deca- or undeca-heme cytochromes to the external cell surface thus enabling respiration using extracellular minerals and polynuclear Fe(III) chelates. The high resolution structure of the first undeca-heme outer membrane cytochrome, UndA, reveals a crossed heme chain with four potential electron ingress/egress sites arranged within four domains. Sequence and structural alignment of UndA and the deca-heme MtrF reveals the extra heme of UndA is inserted between MtrF hemes 6 and 7. The remaining UndA hemes can be superposed over the heme chain of the decaheme MtrF, suggesting that a ten heme core is conserved between outer membrane cytochromes. The UndA structure is the first outer membrane cytochrome to be crystallographically resolved in complex with substrates, an Fe(III)-nitrilotriacetate dimer or an Fe(III)-citrate trimer. The structural resolution of these UndA-Fe(III)-chelate complexes provides a rationale for previous kinetic measurements on UndA and other outer membrane cytochromes.

  18. WS 08/09: Wirtschaft und Handel in der Antike Achard, Guy: La communication Rome, Paris 1991.

    E-Print Network [OSTI]

    Schubart, Christoph

    1 WS 08/09: Wirtschaft und Handel in der Antike Achard, Guy: La communication à Rome, Paris 1991. Adam, Jean-Pierre: Roman building. Materials and techniques, London, New York 1994 (Paperback 1999'esclavage antique, Mytilène 5-7 décembere 2003, Bern, Berlin 2005. Andreau, Jean; Briant, Pierre (Ed.): Économie

  19. bersicht ber evaluierte Lehrveranstaltungen und Dozierende des Fachbereichs Rechtswissenschaften Seite 1 von 5 Anrede Vorname Name Anmel

    E-Print Network [OSTI]

    Kallenrode, May-Britt

    nein Herr Dr. Klaus Stein nein Herr Prof. Dr. Bernhard Stüer nein Herr Dr. Stephen Swann nein Zieschang nein Frau Dr. Martin Zimmermann nein Herr Dr. Andreas Bauer null nein Papier FESEM Repetitorium Rechtsgeschichte Herr Dr. Andreas Bauer null nein Papier FESEM Seminar Familien und Erbrecht Frau

  20. Archival Journals: 1. "Ship Bottom Structure under Uniform Lateral and Inplane Loads," Schiff und Hafen, Heft 5, May

    E-Print Network [OSTI]

    Mofrad, Mohammad R. K.

    Archival Journals: 1. "Ship Bottom Structure under Uniform Lateral and Inplane Loads," Schiff und Research, Vol. 16, No. 2, June 1972, pp. 113-123 (also M.I.T. Report No. 70-15, Sept. 1970). 4. "Post-buckling

  1. Superconductor rotor cooling system

    DOE Patents [OSTI]

    Gamble, Bruce B.; Sidi-Yekhlef, Ahmed; Schwall, Robert E.; Driscoll, David I.; Shoykhet, Boris A.

    2004-11-02T23:59:59.000Z

    A system for cooling a superconductor device includes a cryocooler located in a stationary reference frame and a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with a rotating reference frame in which the superconductor device is located. A method of cooling a superconductor device includes locating a cryocooler in a stationary reference frame, and transferring heat from a superconductor device located in a rotating reference frame to the cryocooler through a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with the rotating reference frame.

  2. Superconductor rotor cooling system

    DOE Patents [OSTI]

    Gamble, Bruce B. (Wellesley, MA); Sidi-Yekhlef, Ahmed (Framingham, MA); Schwall, Robert E. (Northborough, MA); Driscoll, David I. (South Euclid, OH); Shoykhet, Boris A. (Beachwood, OH)

    2002-01-01T23:59:59.000Z

    A system for cooling a superconductor device includes a cryocooler located in a stationary reference frame and a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with a rotating reference frame in which the superconductor device is located. A method of cooling a superconductor device includes locating a cryocooler in a stationary reference frame, and transferring heat from a superconductor device located in a rotating reference frame to the cryocooler through a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with the rotating reference frame.

  3. UniReport Satzungen und Ordnungen vom 23.Dezember 2009 1 Satzung der Johann Wolfgang Goethe-Universitt Frankfurt am Main fr die Festset-

    E-Print Network [OSTI]

    Mester, Rudolf

    Diese Satzung tritt am Tage nach ihrer Bekanntmachung im UniReport Satzungen und Ordnungen der Johann Wolfgang Goethe-Universität Frankfurt am Main in Kraft; sie tritt am 30. September 2010 au�er Kraft

  4. UniReport Satzungen und Ordnungen vom 19. Dezember 2008 1 Satzung der Johann Wolfgang Goethe-Universitt Frankfurt am Main fr die Festset-

    E-Print Network [OSTI]

    Mester, Rudolf

    vorsehen, bleiben unberührt. § 3 Diese Satzung tritt am Tage nach ihrer Bekanntmachung im UniReport Satzungen und Ordnungen der Johann Wolfgang Goethe-Universität Frankfurt am Main in Kraft; sie tritt am 30

  5. 5 Objektorientierung in Java, Teil 2 5.9 Object und Class 5-28 Objektorientierung/Autos/11-equals-clone-toString/Auto.java

    E-Print Network [OSTI]

    Arndt, Holger

    meinPKW = new Auto(); 74 Auto bmw = new Auto(); 75 Auto zweiCV; 76 77 // Identitaet und Aequivalenz mit == und equals() 78 meinPKW.fahren(100); 79 bmw.fahren(100); 80 System.out.println(bmw == meinPKW); // false 81 System.out.println(bmw.equals(meinPKW)); // true 82 bmw.fahren(100); 83 System.out.println(bmw

  6. JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/, The effects of mixing on Age of Air1

    E-Print Network [OSTI]

    Birner, Thomas

    Zentrum f¨ur Luft- und Raumfahrt, Institut f¨ur Physik der Atmosph¨are, Oberpfaffenhofen, Germany (hella.garny@dlr.de) 1 Deutsches Zentrum f¨ur Luft- und Raumfahrt, Institut f¨ur Physik der Atmosph¨are, Oberpfaffenhofen, Germany. 2 Department of Atmospheric Science, Colorado State University, Fort Collins, CO, USA. 3

  7. Atmos. Chem. Phys., 11, 1009710123, 2011 www.atmos-chem-phys.net/11/10097/2011/

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    ¨ur Atmosph¨are und Klima, Z¨urich, Switzerland 6School of Engineering, University of California, Merced (UCM), Merced, CA, USA 7Deutsches Zentrum f¨ur Luft und Raumfahrt, Institut f¨ur Physik der Atmosph¨are, Oberpfaffenhofen, Germany 8Institute for Climate and Atmospheric Science, School of Earth and Environment

  8. Siemens und Axsionics sichern Online-Banking mit Internetpass ab ... http://www.computerwoche.de/_misc/article/articleprintpopup/index... 1 of 2 01/25/08 12:16

    E-Print Network [OSTI]

    Borchert, Bernd

    Siemens und Axsionics sichern Online-Banking mit Internetpass ab ... http://www.computerwoche.de/_misc/article/articleprintpopup/index... 1 of 2 01/25/08 12:16 Datum: URL: Siemens und Axsionics sichern Online-Banking mit Internetpass ab-Erkennung will Siemens IT Solutions and Services einen neuen Online-Banking-Standard in Deutschland einführen. Mit dem

  9. 5 Objektorientierung in Java, Teil 2 5.9 Object und Class 5-28(112) Klassen im Java-Quellcode werden zur Laufzeit durch Instanzen der Klasse Class aus dem Pack-

    E-Print Network [OSTI]

    Arndt, Holger

    -30(114) 71 public static void main(String[] argv) 72 { 73 Auto meinPKW = new Auto(); 74 Auto bmw = new Auto(); 75 Auto zweiCV; 76 77 // Identität und Äquivalenz mit == und equals() 78 meinPKW.fahren(100); 79 bmw.fahren(100); 80 System.out.println(bmw == meinPKW); // false 81 System.out.println(bmw

  10. 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)

    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

    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.

  11. 271 Ernst & Sohn Verlag fr Architektur und technische Wissenschaften GmbH & Co. KG, Berlin Bauphysik 31 (2009), Heft 5 Die Entwicklung energetisch optimierter Lftungsstrategien fr

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    Beschreibungsmittel verwendet werden. Modellierungssprach- standards wie Modelica ermöglichen aufgrund ihrer Modellierungssprache Modelica, für die Simulation und die Analyse der Wechselwirkungen zwischen Raumklima, Bauteil of this work was to develop a flexible, object- oriented, hygrothermal model library based on the Modelica mo

  12. UniReport Satzungen und Ordnungen vom 26. September 2014 1 Satzung der Johann Wolfgang Goethe-Universitt Frankfurt am Main fr die Festset-

    E-Print Network [OSTI]

    . Fachsemester, gestrichen und die Zulassungszahl 107 neu festgesetzt. Artikel 2 Diese �nderung tritt am Tage-Universität Frankfurt am Main in Kraft; sie tritt am 31. März 2015 au�er Kraft. Frankfurt, den 24.09.2014 Prof. Dr

  13. UniReport Satzungen und Ordnungen vom 16. Februar 2009 1 Satzung der Johann Wolfgang Goethe-Universitt Frankfurt am Main fr die Fest-

    E-Print Network [OSTI]

    Mester, Rudolf

    56 0 56 0 56 0 Artikel 2 Diese �nderung tritt am Tage nach ihrer Bekanntmachung im UniReport Satzungen und Ordnungen der Johann Wolfgang Goethe-Universität Frankfurt am Main in Kraft; sie tritt am 30

  14. Konzept der Regionalgruppe Berlin-Brandenburg (RG BB): Das Format der Regionalgruppen ist eine Offene Organisationform der Informatikvereinigungen GI und ACM; sie definieren sich orthogonal

    E-Print Network [OSTI]

    Wichmann, Felix

    , Normung und Lehre, z.B. Smart Grid / Cloud Computing & Smart Metering Systems Smart Air/Rail/Automotive Transportation Systems, Smart Cities etc. 2. "Cyber Security" vertrauensvolle Mensch-Maschine(EtSy)-Interakation (R2GS Specification Club) 3. ,,Das Smart Grid Experiment (DSGE)" Cyber-System-Praxis für Schule

  15. 5 Objektorientierung in Java, Teil 2 5.9 Object und Class 5-29 (112) Die Methode public boolean equals(Object obj) muss zunchst prfen, ob obj zur

    E-Print Network [OSTI]

    Arndt, Holger

    (String[] argv) 72 { 73 Auto meinPKW = new Auto(); 74 Auto bmw = new Auto(); 75 Auto zweiCV; 76 77 // Identität und Äquivalenz mit == und equals() 78 meinPKW.fahren(100); 79 bmw.fahren(100); 80 System.out.println(bmw == meinPKW); // false 81 System.out.println(bmw.equals(meinPKW)); // true 82 bmw.fahren(100); 83 System.out.println(bmw

  16. Sandia Energy - National Rotor Testbed Rotor Design Integrated Airfoil

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiationImplementing Nonlinear757Kelley Ruehl HomeCommissioning HomeMore EnergyEarth

  17. l e i b n i z u n i v e r s i t t h a n n o v e ru n i m a g a z i n a u s g a b e 1 | 2 2 0 1 3 Personalia und Preise

    E-Print Network [OSTI]

    Vollmer, Heribert

    erhalten und angenommen. Dr.Ing. Roland Scharf, E.ON Sverige AB, Malmö, hat einen Ruf auf die W3Professur

  18. Sandia Energy - 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol Home Distribution GridDocuments Home Stationary PowerResearchRisk and

  19. Sandia Energy - 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol Home Distribution GridDocuments Home Stationary PowerResearchRisk

  20. Sandia Energy - 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol Home Distribution GridDocuments Home StationaryFAQs HomeProgramSCADASMART

  1. Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron

    E-Print Network [OSTI]

    For further questions please contact Prof.Dr. Rainer Sommer, rainer.sommer@desy.de. For details see http

  2. Zweite deutsch-sterreichische IBPSA-Konferenz Universitt Kassel

    E-Print Network [OSTI]

    , Germany KURZFASSUNG Der Beitrag stellt ein Modelica-basiertes Gebäudemodell vor, welches verschiedene Modellierungsansatzes wurde eine Spracherweiterung der objektorientierten Modellierungssprache Modelica zusammen mit dem Simulationswerkzeug MOSILAB genutzt. ABSTRACT This article presents a Modelica-based thermal building model, which

  3. Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron

    E-Print Network [OSTI]

    and scientists · Implementation of libraries for hardware access · Documentation and maintenance of software service organi- sations in Germany. Classification is based upon qualifications and assigned duties. DESY

  4. DEUTSCHES ELEKTRONENSYNCHROTRON DESY-PRC 00/04

    E-Print Network [OSTI]

    Institutet, DK 2100 København, Danmark Institut J. Stefan and Oddelek za fiziko, Univerza v Ljubljani

  5. DEUTSCHES ELEKTRONEN--SYNCHROTRON DESYPRC 95/01

    E-Print Network [OSTI]

    København, Danmark M. Cindro, S. Korpar, P. KriŸzan, A. Stanovnik, M. StariŸc, D. Ÿ Skrk, M. Zavrtanik

  6. DEUTSCHES ELEKTRONEN{SYNCHROTRON DESY-PRC 00/04

    E-Print Network [OSTI]

    Institutet, DK 2100 K#28;benhavn, Danmark Institut J. Stefan and Oddelek za #12;ziko, Univerza v Ljubljani

  7. Jessen/Deutsch, "Optical Lattices" 1 OPTICAL LATTICES

    E-Print Network [OSTI]

    Jessen, Poul S.

    cooled below the so called "Doppler limit". Research at the Ecole Normale Supérieure (Dalibard and Cohen. The ENS group in particular proposed an elegant 1-dimensional model system, in which cooling results from state. This model system cannot, however, be easily compared with the standard laser cooling

  8. Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron

    E-Print Network [OSTI]

    experiments · Support of cryogenic equipment · User support at the beamline Requirements · PhD in physics or equivalent qualification · Knowledge in using X-ray scattering and diffraction methods · Experience qualifications and assigned duties. DESY operates flexible work schemes. Handicapped persons will be given

  9. Beschleuniger | Forschung mit Photonen | Teilchenphysik Deutsches Elektronen-Synchrotron

    E-Print Network [OSTI]

    Sicherheitssystemen nach DIN EN 62061 bzw. 61508 · Spezifikation von Sicherheitsfunktionen · Durchführung von FMEA

  10. DEE Deutsche Erneuerbare Energien GmbH | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, clickInformationNew|CoreCpWingCushing,DA (DistributionGeothermal AreaDEE

  11. DS Deutsche Solargesellschaft mbH | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility Database Data and Resources11-DNA Jump to: navigation,Ltd Jump to:DS

  12. DBD Deutsche Biodiesel GmbH | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:PowerCER.pngRoofs andCrops Ltd Jump to: navigation, search Name:DBDBD

  13. Der Lrm war ohrenbetubend: In der Abenddmmerung des 7. November 1969, um exakt 17.52 Uhr Ortszeit, hob von der Wes-

    E-Print Network [OSTI]

    Der Lärm war ohrenbetäubend: In der Abenddämmerung des 7. November 1969, um exakt 17.52 Uhr-off!" Für die versammelten Wissenschaftler und Techniker, die den Start verfolgten, war es das Signal, um die Sektflaschen zu köpfen: AZUR, der erste deutsche Satellit, war nach fast fünfjähriger Bau- zeit

  14. IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, VOL. 25, NO. 8, AUGUST 2003 1027 [20] R.L. Kirby, "A Product Rule Relaxation Method," Technical Report 772,

    E-Print Network [OSTI]

    Peli, Eli

    IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, VOL. 25, NO. 8, AUGUST 2003 1027 [20] R.L. Kirby, "A Product Rule Relaxation Method," Technical Report 772, Univ. Maryland, 1979. [21," Technical Report DLR-FB 91-29, Deutsche Forschungsan- stalt fu¨r Luft- und Raumfahrt, 1991. [24] D.G. Lowe

  15. Quarterly Journal of the Royal Meteorological Society Q. J. R. Meteorol. Soc. 137: 118136, January 2011 Initiation of deep convection at marginal instability in an

    E-Print Network [OSTI]

    Chaboureau, Jean-Pierre

    , Germany bNational Centre for Atmospheric Science, University of Leeds, UK cDepartment of Meteorology of Hohenheim, Stuttgart, Germany gInstitut f¨ur Physik der Atmosph¨are, Deutsches Zentrum f¨ur Luft- und Raumfahrt, Oberpfaffenhofen, Germany hM´et´eo-France, Toulouse, France i Laboratoire Atmosph`eres, Milieux

  16. Atmos. Chem. Phys., 3, 17911806, 2003 www.atmos-chem-phys.org/acp/3/1791/ Atmospheric

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ,* 1Deutsches Zentrum f¨ur Luft- und Raumfahrt (DLR), Institut f¨ur Physik der Atmosph¨are (IPA, Sweden 3Dalhousie University, Department of Physics and Atmospheric Science, Halifax, Nova Scotia, Canada, Germany *Now at: Cooperative Institute for Research in Environmental Sciences (CIRES), University

  17. Atmos. Chem. Phys., 7, 42034227, 2007 www.atmos-chem-phys.net/7/4203/2007/

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ,*, and F. Yu5 1Deutsches Zentrum f¨ur Luft- und Raumfahrt (DLR), Institut f¨ur Physik der Atmosph¨are (IPA-AAF), Karlsruhe, Germany 3Department of Atmospheric Science, Colorado State University, Fort Collins, CO, 80523State University of New York at Albany (SUNY), Atmospheric Sciences Research Center (ASRC), NY, USA *now

  18. Atmos. Chem. Phys., 11, 82318256, 2011 www.atmos-chem-phys.net/11/8231/2011/

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    ¨ur Physik der Atmosph¨are, Johannes-Gutenberg-Universit¨at, Mainz, Germany 3Laboratoire des Sciences du6 1Laboratoire Interuniversitaire des Syst`emes Atmosph´eriques (LISA), UMR7583, Universit´e Paris 5Deutsches Zentrum f¨ur Luft- und Raumfahrt (DLR), Institut f¨ur Physik der Atmosph

  19. The potential to narrow uncertainty in projections of stratospheric ozone over the

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    , Reading, UK 2Deutsches Zentrum f¨ur Luft- und Raumfahrt, Institut f¨ur Physik der Atmosph Research, Boulder, CO, USA 5National Institute for Environmental Studies, Tsukuba, Japan 6Science Systems, UK 10University of Leeds, Institute for Atmospheric Science, UK 11Universit L'Aquila, Dipartimento di

  20. 7, 78437905, 2007 Indirect effect of soot

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ), Institut f¨ur Physik der Atmosph¨are (IPA), Oberpfaffenhofen, Germany 2 Forschungszentrum Karlsruhe Science, Colorado State University, Fort Collins, CO, 80523, USA 4 Ruprecht-Karls-Universit¨at Heidelberg), Atmospheric Sciences Research Center (ASRC), NY, USA * now at: Deutsches Patent- und Markenamt, M

  1. Manuscript prepared for J. Name with version 3.0 of the LATEX class copernicus.cls.

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    ´eculaire et Atmosph´erique, Facult´e des Sciences, Universit´e de Reims Champagne-Ardenne and CNRS, Reims´e Paris 6, France 3 Deutsches Zentrum f¨ur Luft- und Raumfahrt, Institut f¨ur Physik der Atmosph Department of Atmospheric Sciences, Wyoming University, Laramie, US 14 LTHE, Universit´e J.Fourier, Institut

  2. Atmos. Chem. Phys., 13, 30033025, 2013 www.atmos-chem-phys.net/13/3003/2013/

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    -3003-2013 © Author(s) 2013. CC Attribution 3.0 License. Sciences cess Atmospheric Chemistry and Physics OpenAccess Geoscientific Model Development OpenAccess M Hydrology and Earth System Sciences OpenAccess Ocean Science Open, and S. Dietm¨uller1 1Deutsches Zentrum f¨ur Luft- und Raumfahrt, Institut f¨ur Physik der Atmosph

  3. Atmos. Chem. Phys., 11, 1200712036, 2011 www.atmos-chem-phys.net/11/12007/2011/

    E-Print Network [OSTI]

    Boyer, Edmond

    Science, School of Earth and Environment, University of Leeds, Leeds, UK 2C2SM ­ ETH Z¨urich, Z¨urich, Switzerland 3Division of Atmospheric Sciences, Department of Physics, University of Helsinki, Helsinki, Finland 4Deutsches Zentrum f¨ur Luft- und Raumfahrt (DLR), Institut f¨ur Physik der Atmosph

  4. Atmos. Meas. Tech., 5, 30773097, 2012 www.atmos-meas-tech.net/5/3077/2012/

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Institute of Technology, Karlsruhe, Germany 4School of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Manchester, UK 5National Centre for Atmospheric Science, The University of Manchester, Manchester, UK 6Deutsches Zentrum f¨ur Luft- und Raumfahrt, Institut f¨ur Physik der Atmosph

  5. Projections of UV radiation changes in the 21st century: impact of ozone recovery and

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    of Cambridge, Department of Chemistry, Cambridge, UK 6Institute for Climate and Atmospheric Science, University of Leeds, Leeds, UK 7Deutsches Zentrum f¨ur Luft- und Raumfahrt, Institut f¨ur Physik der Atmosph/World Rad. Center, Davos, Switzerland 15Institute for Atmospheric and Climate Science ETH, Zurich

  6. AK Hartmann, Thermodynamik und Statistische Physik 103 Auf Koexistenzkurve p(T): 1(T, p(T)) -2(T, p(T)) = 0

    E-Print Network [OSTI]

    Hartmann, Alexander K.

    AK Hartmann, Thermodynamik und Statistische Physik 103 26.1.2006 Auf Koexistenzkurve p(T): µ1(T, p(T)) - µ2(T, p(T)) = 0 totale Ableitung d dT = 0: 0 ! = dµ1(T) dT - dµ2(T) dT = µ1 T p - µ2 T p + µ1 p T - µ2 p T dp dT = 1 N S - 1 N V dp dT (S = 0, V = 0) dp dT = S V = Ql TV (14.3) Gleichung von Clausius

  7. LERNEN UND LEHREN LERNEN UND LEHREN

    E-Print Network [OSTI]

    Manstein, Dietmar J.

    - geninfektion bei Mukoviszidose (Cystischer Fibrose). Für Patienten mit Cystischer Fi- brose ist die chronische

  8. und Lignocellulose heimischer Pflanzen anwenden und somit

    E-Print Network [OSTI]

    Vollmer, Heribert

    Produktion von Biogas einsetzen. Derzeit installierte Biogasanlagen nutzen zumeist den Fruchtanteil, also die

  9. Der Oktapod Kraft-und Momentensensor (Otto Bock HealthCare GmbH) ist ein Dehnungsmesstreifen basiertes System fr den direkten Einbau in Beinprothesen. Damit knnen die Belastungen der Prothese in allen

    E-Print Network [OSTI]

    Berlin,Technische Universität

    Der Oktapod Kraft- und Momentensensor (Otto Bock HealthCare GmbH) ist ein Dehnungsmesstreifen automatischen Kalibrator (Otto Bock HealthCare, Duderstadt) Auswertung der Messdaten o Optimierung der Berlin erfolgt durch Dipl.-Ing. Julius Thiele, von Seiten der Otto Bock HealthCare GmbH erfolgt sie durch

  10. VI.4. SINGUL ARE KOHOMOLOGIE 313 VI.4.20. Beispiel. Aus Satz VI.4.11 und Beispiel V.4.13 bzw. Beispiel V.7.37

    E-Print Network [OSTI]

    Haller, Stefan

    , 12, . . . 0 sonst Ist n m dann induziert die kanonische Inklusion : HPn HPm Isomor- phismen : Hq (HPm ; G) = - Hq (HPn ; G), f¨ur alle q 2n. VI.4.22. Beispiel. Aus Satz VI.4.11 und Proposition V

  11. 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)

    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

    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.

  12. Medieninformation Kommunikation und Medien

    E-Print Network [OSTI]

    Hoffmann, Rolf

    Team noch in Hockenheim (30. Juli ­ 4. August 2013), erstmals in Ungarn (Györ, 22. ­ 25. August 2013

  13. FG Systemdynamik und Reibungsphysik

    E-Print Network [OSTI]

    Berlin,Technische Universität

    2 mx K = , potentielle Energie der Fe- der ist 2 2 cx U = . Lagrangefunktion ist gleich 2 2 2 2 mx cx L K U= - = - . Die Ableitungen lau- ten: 2 2 2 2 2 2 L mx cx mx mx x x x = - = = , d L d mx mx dt x dt = = , 2 2 2 2 2 2 L mx cx cx cx x x x = - = - = - . Die

  14. Medieninformation Kommunikation und Medien

    E-Print Network [OSTI]

    Haller-Dintelmann, Robert

    for the competition: the planning and implementation of a prototype for sustainable living as an exhibition project live?" was one of the key questions for the participants of the study project, who designed team with experts for sustainable building planning and implementation," Joppien says, summarizing

  15. MATHEMATIK UND NATURWISSENSCHAFTEN

    E-Print Network [OSTI]

    Nabben, Reinhard

    Liebchen and Sebastian Stiller # 23rd November 2006 In public transport punctuality has prominent influence, and analyze in detail their advantages and drawbacks. 1 Introduction In public transport punctuality has should not arrive later than the published arrival time. Hereby, delays can only be absorbed by time

  16. Klimawandel und Ernhrungssicherheit

    E-Print Network [OSTI]

    Mühlemann, Oliver

    !Lebensmittelnachfrage steigt !Klima: Biofuel wird attraktiv !2008 Nachfrage x10: 45 Mio ha large Scale Land Deals, vor allem in Afrika ­ viel Biofuel !Chancen oder Risiko? !Landrechte ­ Ernährungssicherheit! 13 14 verpflichten sich Gesetzliche Standards für Biofuel Importe Unterstützen Länder in Umsetzung von Landreform

  17. Ruckversicherung und Katastrophenbonds

    E-Print Network [OSTI]

    Bayer, Christian

    ¨uckversicherungskonzerne der Welt Gr¨oßter Einzelschaden in der Vergangenheit war Hurricane Andrew 1992 mit versicherten Sch. August 2005 traf der Hurricane " Katrina" mit Windgeschwindigkei- ten von etwa 200 km/h die amerikanische Gesamtschaden, der durch Hurricane Katrina verursacht wurde, ist h¨oher als der Schaden in einem

  18. Veroffentlichungen und Vortrage Veroffentlichungen

    E-Print Network [OSTI]

    -Mills coupling . 24.01.2008 D. HORNS (Univ. Hamburg) Astrophysics at the Terascale. 29.01.2008 T. NOLL (BESSY: Results and Future. 04.03.2008 R. FOLLATH (BESSY) BESSY ein ¨Uberblick. 04.03.2008 C. REMBSER (CERN) Non

  19. Medieninformation Kommunikation und Medien

    E-Print Network [OSTI]

    Haller-Dintelmann, Robert

    Hochschulen stellen ihre Realisationen für energieautarke Gebäude vor. Die TU Darmstadt ist mit einem

  20. Medieninformation Kommunikation und Medien

    E-Print Network [OSTI]

    Hoffmann, Rolf

    Epiphyten, Prof. Dr. Günter Gerlach (München) Unterwegs in den �berschwemmungswäldern Süd-Venezuelas, wo man

  1. 3 Grundlagen der Darstellung und Verarbeitung von Information 3.2 Codes 3-43(67) Definition 3.36: Das Verschieben der Bits um Positionen nach links (rechts) mit Auffllen durch Nullen heit

    E-Print Network [OSTI]

    Arndt, Holger

    ...10 - 0...0 realisiert die Multiplikation mit im Zweierkomplement: Satz 3.37: Tritt kein Ã?berlauf ein 2 einem Links-Shift der Ziffern von zk() um Positionen. Ã?berlauf tritt genau dann ein, wenn die...---1...10. 1. Fall: 0, also zk() = und -1 = 0. Tritt Ã?berlauf ein, so ist 2 2-1 , also 2--1 . Also ist

  2. AVIONIK AUTOMOTIVE RAUMFAHRT ENERGIESYSTEME PRODUKTION UND LOGISTIK WEHRTECHNIK S Y S T E M S E N G I N E E R I N G S O F T WA R E E N T W I C K L U N G V E R I F I K AT I O N U N D VA L I D I E R U N G

    E-Print Network [OSTI]

    Teschner, Matthias

    nach Standards (DO178B, ABD100, V-Modell), System FMEA für den Einsatz in allen Phasen des Software, Modellierung und Simulation, System- dokumentation nach Standards (DO178B, ABD100, V-Modell), System FMEA für

  3. AVIONIK AUTOMOTIVE RAUMFAHRT ENERGIESYSTEME PRODUKTION UND LOGISTIK WEHRTECHNIK S Y S T E M S E N G I N E E R I N G S O F T WA R E E N T W I C K L U N G V E R I F I K AT I O N U N D VA L I D I E R U N G

    E-Print Network [OSTI]

    Teschner, Matthias

    , Modellierung und Simulation, System- dokumentation nach Standards (DO178B, ABD100, V-Modell), System FMEA für178B, ABD100, V-Modell), System FMEA für den Einsatz in allen Phasen des Software

  4. Aeroelastic analysis of a helicopter rotor 

    E-Print Network [OSTI]

    McQuien, Larry Jay

    1977-01-01T23:59:59.000Z

    . , "L'Azione Aerodinamica sul Profilo Oscillante in un Fluido Compressibile a Velocita I posonora, " L'Aerotecnica, t. XVIII, fasc. 4, April 1938. (Also available as British Ministry of Aircraft Production R. T. P. Translation 987. } 9 Rao, B. N...

  5. Methods of making wind turbine rotor blades

    DOE Patents [OSTI]

    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

    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.

  6. Optimum rotationally symmetric shells for flywheel rotors

    DOE Patents [OSTI]

    Blake, Henry W. (Oak Ridge, TN)

    2000-01-01T23:59:59.000Z

    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.

  7. 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...

  8. Rotor assembly including superconducting magnetic coil

    DOE Patents [OSTI]

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

    2003-01-01T23:59:59.000Z

    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.

  9. Sandia National Laboratories: SMART Rotor Video

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

    Power Personnel Water Power in the News Geothermal Advanced Bit Development Geothermal Energy & Drilling Technology Hydrogen and Fuel Cells Program Materials & Components...

  10. Ener G Rotors | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A PotentialJump to:Emminol Jump to: navigation,Enable IPCGreenEneltecEner G

  11. Sandia Energy - 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol Home Distribution GridDocuments Home Stationary PowerResearchRisk andBlade

  12. E. L. BRADY AND M. DEUTSCH yields very definite information concerning the parities

    E-Print Network [OSTI]

    Browder, Tom

    of Physics and Chemistry Department, Massachusetts Institute of Technology, Cambridge, MassachusettsGect. Unfortunately, it seems at present entirely unfeasible to separate the nuclear magnetic substates by application been proposed to change the relative populations of the several mag- netic substates of an excited

  13. Elektromobilitt erfahrbar machen. Peter Berger, Business Development, Konzerngeschftsfeld Energie, Deutsche Telekom

    E-Print Network [OSTI]

    Ulm, Universität

    - brauchsschutz Abrechnung Service Preisentwicklung Strom vs. Kraftstoffe Steuerbelastung / Fördermittel

  14. CERTIFICATEIQNet and DQS GmbH Deutsche Gesellschaft zur Zertifizierung von Managementsystemen

    E-Print Network [OSTI]

    Markatos, Evangelos P.

    Croatia DQS Holding GmbH Germany DS Denmark ELOT Greece FCAV Brazil FONDONORMA Venezuela ICONTEC Colombia

  15. Speakers: Adam Sieminski, Deutsche Bank Stephen P. A. Brown, Resources for the Future

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells,1Stocks Nov-14 Dec-14TableConference | PoweringSettingSouth5:

  16. Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH | Open

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility DatabaseMichigan: EnergyKansas:Detroit Beach,South Dakota:

  17. Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH | Open

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility DatabaseMichigan: EnergyKansas:Detroit Beach,South Dakota:Energy

  18. Deutsche Solar AG formerly Bayer Solar GmbH | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility DatabaseMichigan: EnergyKansas:Detroit Beach,South Dakota:EnergyAG

  19. Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH | Open

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision hasda62829c05bGabbs ValleyWindEnergy Information

  20. Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH | Open

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision hasda62829c05bGabbs ValleyWindEnergy

  1. Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH | Open

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision hasda62829c05bGabbs ValleyWindEnergyEnergy

  2. Struktur und Energierelaxation elektronisch angeregter 3 He und

    E-Print Network [OSTI]

    ­ and 4 He­clusters The structure and relaxation dynamics of electronically excited 3 He­ and 4 He excitation of the clusters a variety of highly excited atomic and molecular states are populated leading aus Memmingen Hamburg 1999 #12; #12; Structure and energy­relaxation of electronically excited 3 He

  3. Lehr und Forschungseinheit Informatik X Rechnertechnik und Rechnerorganisation

    E-Print Network [OSTI]

    Stamatakis, Alexandros

    major areas: ­ Programming Environments and Tools for Parallel Processing ­ Parallel and Distributed be summarized under the following four headlines: ­ For the Programming Environments and Tools for Parallel, microprogramming and VHDL design. We are trying to offer this lab on the Internet based on a JAVA environment. Our

  4. FAKULT AT II MATHEMATIK UND

    E-Print Network [OSTI]

    Nabben, Reinhard

    provide a very good solution for G8,8. Is this optimal? At first sight, this might appear being a kind.de), on December 18, 2006 the Figure 1: A very good SFCB of G8,8. It costs 266. Can you give a cheaper one? DFG

  5. Institut fr Werkzeugmaschinen und Fabrikbetrieb

    E-Print Network [OSTI]

    Berlin,Technische Universität

    An experience in open source, open design or 3D printing would be appreciated Languages: German and English

  6. Institut fr Werkzeugmaschinen und Fabrikbetrieb

    E-Print Network [OSTI]

    Berlin,Technische Universität

    science, electrical engineering, physical science, mathematics or comparable field of study Object Energy-monitoring-triggered maintenance of production equipment Desired Skills: Student of computer

  7. I. Rechts-und Verwaltungsvorschriften

    E-Print Network [OSTI]

    Nabben, Reinhard

    Inkrafttreten, Au�erkrafttreten (1) Diese Ordnung tritt am Tag nach ihrer Veröffentlichung im Amtlichen Prüfungsordnung für den Masterstudiengang Mathematik vom 24. Januar 2006 (AMBl. TU 24/2006) tritt spätestens nach

  8. TSUAHXETSUAHXE UndergroUnd tank

    E-Print Network [OSTI]

    Schladow, S. Geoffrey

    USer waterheatexchange waterheatexchange general exhaUSt lab exhaUSt warmairexhaUSt radiant panel heat radiant panel heat by night air, then stored underground. cold water travels through floors and ceiling panels to absorb heat rain and snowmelt in toilets saves water and reduces stormwater runoff photovoltaic panels turn solar

  9. FAKULT AT II MATHEMATIK UND

    E-Print Network [OSTI]

    Nabben, Reinhard

    Liebchen and Sebastian Stiller 23rd November 2006 In public transport punctuality has prominent influence punctuality has prominent influence on the customers' sat- isfaction. A train that is five minutes late may the published arrival time. Hereby, delays can only be absorbed by time supplements at later activities

  10. Institut fur Computergraphik und Algorithmen

    E-Print Network [OSTI]

    reduction, increased stability and in terms of new materials (e.g. carbon fibre reinforced plastics) force://www.cg.tuwien.ac.at/ ftp://ftp.cg.tuwien.ac.at/ TECHNICAL REPORT Surface Extraction from Multi-Material Components Keywords: DECT image fusion, local surface extraction, Dual Energy CT, metrology, dimensional measurement

  11. Institut fr Werkzeugmaschinen und Fabrikbetrieb

    E-Print Network [OSTI]

    Berlin,Technische Universität

    Energy aware production planning and control strategies Energy savings in factories based on real time (both languages possible) Favoured: Knowledge on factory management (planning, control, etc

  12. Substantially Parallel Flux Uncluttered Rotor Machines (U-Machine)

    Energy Innovation Portal (Marketing Summaries) [EERE]

    2010-02-03T23:59:59.000Z

    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...

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    l'air comprimé comme gaz. Le principe consiste à sépa- rer, par un film gazeux, un plan mobile d atmosphérique aux abords du gicleur, due soit à un écoulement où 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. Modèle

  14. ELECTROSTATICALLY DRIVEN ROTOR ON CONDUCTIVE LIQUID RING BEARINGS

    E-Print Network [OSTI]

    avoid dry friction, eliminate wear and enhance reliability; compared with gas bearing [7], liquid]. However, the solid-solid friction, large in microscale, requires high voltage or large current to overcome the friction and often causes serious wear [6]. Gas or air bearing [7], created through electrostatic

  15. Targeted Energy Transfer between a Rotor and a Morse oscillator

    E-Print Network [OSTI]

    Boyer, Edmond

    Copernic-B^at. Materia Nova 7000 Mons, Belgium bLaboratoire L´eon Brillouin (CEA-CNRS), CEA Saclay 91191

  16. Field Testing of a Quad Rotor Smartphone Control System

    E-Print Network [OSTI]

    Cummings, M.L.

    2012-01-01T23:59:59.000Z

    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 ...

  17. 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

  18. Connector tube for a turbine rotor cooling circuit

    DOE Patents [OSTI]

    Li, Ming Cheng (Cincinnati, OH)

    2003-06-24T23:59:59.000Z

    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.

  19. 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.

  20. 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...