National Library of Energy BETA

Sample records for rotor speed-the revolutions

  1. Revolution Now

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

    Revolution Now The Future Arrives for Four Clean Energy Technologies - 2014 Update October 2014 Gaining Force ......

  2. Revolution Now

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

    Revolution Now The Future Arrives for Four Clean Energy Technologies September 17, 2013 Lead author Dr. Levi Tillemann, Special Advisor for Policy and International Affairs...

  3. Revolution Now

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterestedReplacement-2-A WholesaleRetrofit ExistingServicesDepartment Revolution Now The

  4. Sandia Energy - Semiconductor Revolution

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

    Semiconductor Revolution Home Energy Research EFRCs Solid-State Lighting Science EFRC Semiconductor Revolution Semiconductor RevolutionTara Camacho-Lopez2015-05-14T14:32:12+00:00...

  5. Separators for flywheel rotors

    DOE Patents [OSTI]

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

    1998-01-01

    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.

  6. Separators for flywheel rotors

    DOE Patents [OSTI]

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

    1998-07-07

    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.

  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. On the characteristics of fault-induced rotor-dynamic bifurcations and nonlinear responses 

    E-Print Network [OSTI]

    Yang, Baozhong

    2004-11-15

    speeds, the demand for better and improved performance achievable through higher speeds has rendered the use of a linear approach for rotor-dynamic analysis both inadequate and ineffective. To establish the fundamental knowledge base necessary...

  9. Sandia Energy - National Rotor Testbed Rotor Design Integrated...

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

    Results Home Renewable Energy Energy SWIFT Facilities News Wind Energy News & Events Systems Analysis Computational Modeling & Simulation National Rotor Testbed Rotor Design...

  10. Sandia Energy - Rotor Aerodynamic Design

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

    Aerodynamic Design Home Stationary Power Energy Conversion Efficiency Wind Energy Rotor Innovation Rotor Aerodynamic Design Rotor Aerodynamic DesignTara Camacho-Lopez2015-05-28T16:...

  11. Revolution in Detection Affairs

    SciTech Connect (OSTI)

    Stern W.

    2013-11-02

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

  12. Single Rotor Turbine

    DOE Patents [OSTI]

    Platts, David A. (Los Alamos, NM)

    2004-10-26

    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.

  13. Sandia Energy - Rotor Blade Sensors and Instrumentation

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

    Blade Sensors and Instrumentation Home Stationary Power Energy Conversion Efficiency Wind Energy Rotor Innovation Rotor Blade Sensors and Instrumentation Rotor Blade Sensors and...

  14. RESOLUTION REVOLUTION The super microscopes

    E-Print Network [OSTI]

    New South Wales, University of

    Cooper. Proofreading: Pam Dunne. HANK HAeUSleR is fascinated by the power of light to transform buildings fellow 17 Without the faces of men 18 fEaTURES Market leader ­ Chris Styles 7 Resolution revolution 8

  15. 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)

    2001-01-23

    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.

  16. Single rotor turbine engine

    DOE Patents [OSTI]

    Platts, David A. (Los Alamos, NM)

    2002-01-01

    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.

  17. Credit Rationing and Crowding Out During the Industrial Revolution

    E-Print Network [OSTI]

    Voth, Joachim

    2005-01-01

    during the British Industrial Revolution." Explorations inT. S. (1968). The Industrial Revolution, 1760-1830. London,Growth during the Industrial Revolution. Oxford, Oxford

  18. Homopolar motor with dual rotors

    DOE Patents [OSTI]

    Hsu, J.S.

    1998-12-01

    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.

  19. Die Casting Copper Motor Rotors

    Broader source: Energy.gov [DOE]

    Though it conducts electricity less efficiently than copper, aluminum is the industry’s preferred fabrication material in electric induction motor rotors. Traditional tool steel casting molds...

  20. Revolution in nuclear detection affairs

    SciTech Connect (OSTI)

    Stern, Warren M.

    2014-05-09

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

  1. Post-industrial-revolution HCI Colin Johnson

    E-Print Network [OSTI]

    Kent, University of

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

  2. IT Revolution in Learning Technology Riichiro Mizoguchi

    E-Print Network [OSTI]

    Mizoguchi, Riichiro

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

  3. Wind turbine rotor aileron

    DOE Patents [OSTI]

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

    1994-06-14

    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.

  4. Rotor assembly and assay method

    DOE Patents [OSTI]

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

    1993-01-01

    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.

  5. Rotor assembly and assay method

    DOE Patents [OSTI]

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

    1993-09-07

    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.

  6. Grain Fish Money Financing Africa's Green and Blue Revolutions Financing Africa's Green and Blue Revolutions

    E-Print Network [OSTI]

    Grain Fish Money Financing Africa's Green and Blue Revolutions 1 Financing Africa's Green and Blue Revolutions GRAIN FISH MONEY AFRICA PROGRESS REPORT 2014 #12;AFRICA PROGRESS REPORT 2014 2 #12;Grain Fish Money Financing Africa's Green and Blue Revolutions 3 #12;#12;Grain Fish Money Financing Africa's Green

  7. Probabilistic analysis of meanline compressor rotor performance

    E-Print Network [OSTI]

    Fitzgerald, Nathan Andrew, 1980-

    2004-01-01

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

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

    E-Print Network [OSTI]

    Aue, J.; Fineran, B.

    2005-01-01

    blade (HOG rotor) 2. A new conventional repulping blade of the same style (spare HOG rotor) 3. A new energy efficient repulping blade (HM rotor) The HM rotor, a tall, swept-back blade design, has been engineered to provide effective turbulence...

  9. Revolution Environmental | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report UrlNM-bRenewable Energy| Open Energy InformationRevolution

  10. Rotor for centrifugal fast analyzers

    DOE Patents [OSTI]

    Lee, N.E.

    1984-01-01

    The invention is an improved photometric analyzer of the rotary cuvette type, the analyzer incorporating a multicuvette rotor of novel design. The rotor (a) is leaktight, (b) permits operation in the 90/sup 0/ and 180/sup 0/ excitation modes, (c) is compatible with extensively used Centrifugal Fast Analyzers, and (d) can be used thousands of times. The rotor includes an assembly comprising a top plate, a bottom plate, and a central plate, the rim of the central plate being formed with circumferentially spaced indentations. A uv-transmitting ring is sealably affixed to the indented rim to define with the indentations an array of cuvettes. The ring serves both as a sealing means and an end window for the cuvettes.

  11. Rotor for centrifugal fast analyzers

    DOE Patents [OSTI]

    Lee, Norman E. (Knoxville, TN)

    1985-01-01

    The invention is an improved photometric analyzer of the rotary cuvette type, the analyzer incorporating a multicuvette rotor of novel design. The rotor (a) is leaktight, (b) permits operation in the 90.degree. and 180.degree. excitation modes, (c) is compatible with extensively used Centrifugal Fast Analyzers, and (d) can be used thousands of times. The rotor includes an assembly comprising a top plate, a bottom plate, and a central plate, the rim of the central plate being formed with circumferentially spaced indentations. A UV-transmitting ring is sealably affixed to the indented rim to define with the indentations an array of cuvettes. The ring serves both as a sealing means and an end window for the cuvettes.

  12. 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)

    1998-01-01

    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.

  13. Turbomachine rotor with improved cooling

    DOE Patents [OSTI]

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

    1998-05-26

    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.

  14. The Manycore Revolution and Parallel Software Projects at NERSC

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

    Revolution and Parallel Software The Manycore Revolution and Parallel Software | Tags: Math & Computer Science PGAS.jpg Key Challenges: A new software ecosystem is expected to...

  15. Rotor blades for turbine engines

    SciTech Connect (OSTI)

    Piersall, Matthew R; Potter, Brian D

    2013-02-12

    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.

  16. Sensor Networks: Distributed Algorithms Reloaded or Revolutions?

    E-Print Network [OSTI]

    Sensor Networks: Distributed Algorithms Reloaded ­ or Revolutions? Roger Wattenhofer Computer. This paper wants to motivate the distributed algorithms community to study sensor networks. We discuss why community, a sensor network essentially is ­ a database. The distributed algorithms community should join

  17. Rotary engine with inserts in rotor faces

    SciTech Connect (OSTI)

    Jones, C.

    1992-06-23

    This patent describes a rotor for a rotary combustion engine. It comprises a plurality of circumferentially spaced apex portions, a plurality of working surfaces extending between adjacent apex portions, each working surface having a recess formed therein, and an insulating plate for each recess, characterized by: a slot formed in the rotor adjacent one end of each recess, the rotor having a lip which radially separates each slot from the working surface; and one end of each plate being rigidly fixed to the rotor and a second end of each plate being slidably received in a corresponding one of the slots.

  18. Method for manufacturing a rotor having superconducting coils

    DOE Patents [OSTI]

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

    2001-01-01

    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.

  19. Multiple piece turbine rotor blade

    DOE Patents [OSTI]

    Jones, Russell B; Fedock, John A

    2013-05-21

    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.

  20. Radial-radial single rotor turbine

    DOE Patents [OSTI]

    Platts, David A. (Los Alamos, NM)

    2006-05-16

    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.

  1. Substantially parallel flux uncluttered rotor machines

    DOE Patents [OSTI]

    Hsu, John S.

    2012-12-11

    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

  2. SW 55 Ti ROTOR Used In Beckman Coulter

    E-Print Network [OSTI]

    Marchant, Jonathan

    SW 55 Ti ROTOR Used In Beckman Coulter Class H, R, and S Preparative Ultracentrifuges FPO L5-TB-062M August 2006 © 2006 Beckman Coulter, Inc. Printed in the U.S.A. #12;2 SW 55 Ti Rotor SAFETY NOTICE made by other manufacturers may fit in the SW 55 Ti rotor, their safety in this rotor cannot

  3. Vacuum coupling of rotating superconducting rotor

    DOE Patents [OSTI]

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

    2003-12-02

    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.

  4. Spiral Laminar Flow: A revolution in understanding?

    E-Print Network [OSTI]

    Greenaway, Alan

    Blood Flow Spiral laminar flow #12;Spiral flow in the Aorta (MRI) Computational Fluid Dynamics 0 10 20Spiral Laminar Flow: A revolution in understanding? Reintroduction of natural blood flow Laminar Flow through Runoff (3months) Proximal Anastomosis SLF TM Graft Distal Anastomosis Post-op Angios

  5. Wind turbine rotor hub and teeter joint

    DOE Patents [OSTI]

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

    1994-10-11

    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.

  6. Interlayer toughening of fiber composite flywheel rotors

    DOE Patents [OSTI]

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

    1998-07-14

    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.

  7. Interlayer toughening of fiber composite flywheel rotors

    DOE Patents [OSTI]

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

    1998-01-01

    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.

  8. Cooperative Self-Propulsion of Active and Passive Rotors

    E-Print Network [OSTI]

    Yaouen Fily; Aparna Baskaran; M. Cristina Marchetti

    2011-10-26

    Using minimal models for low Reynolds number passive and active rotors in a fluid, we characterize the hydrodynamic interactions among rotors and the resulting dynamics of a pair of interacting rotors. This allows us to treat in a common framework passive or externally driven rotors, such as magnetic colloids driven by a rotating magnetic field, and active or internally driven rotors, such as sperm cells confined at boundaries. The hydrodynamic interaction of passive rotors is known to contain an azimuthal component \\sim 1/r^2 to dipolar order that can yield the recently discovered "cooperative self-propulsion" of a pair of rotors of opposite vorticity. While this interaction is identically zero for active rotors as a consequence of torque balance, we show that a \\sim 1/r^4 azimuthal component of the interaction arises in active systems to octupolar order. Cooperative self-propulsion, although weaker, can therefore also occur for pairs of active rotors.

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

    E-Print Network [OSTI]

    Faulkner, Henry B.

    1974-01-01

    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 ...

  10. A Boring Material "Stretched" Could Lead to an Electronics Revolution...

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

    to APS Science Highlights rss feed A Boring Material "Stretched" Could Lead to an Electronics Revolution SEPTEMBER 30, 2010 Bookmark and Share Predicted effect of biaxial strain...

  11. Variable diameter wind turbine rotor blades

    DOE Patents [OSTI]

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

    2005-12-06

    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.

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

    E-Print Network [OSTI]

    R. C. Taylor

    2003-01-01

    this at their peril. Timothy Morton and Nigel Smith, eds. Radicalism in British Literary Culture, 1650-1830: From Revolution to Revolution. Cambridge: Cambridge University Press, 2002. x + 284 pp. $60.00. Review by RICHARD C. TAYLOR, EAST CAROLINA UNIVERSITY..., ideologies, and radical personae across a span of time (14). This collection of essays demonstrates how successive generations re- read the English Revolution by appropriating its central figures, theological disputes, and political debates for use in new...

  14. 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)

    2002-01-01

    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.

  15. Aeroelastic analysis of a helicopter rotor 

    E-Print Network [OSTI]

    McQuien, Larry Jay

    1977-01-01

    for a heli- copter rotor in hover. The objective of this analysis was to ascertain the sensitivity of the flutter speed with regard to the type of unsteady aerodynamic theory used in conjunction with the analysis. The two aerodynamic theories used... of the Potential Flow Equation Two-Dimensional Flow . . . . . . . . . . . . . . . . . . 11 Three-Dimensional Flow . . . . . . . . . . . . . . . . . 14 Summary of Aerodynamic Theories . . . . . . . . . . . . . 18 III FLUTTER THEORY...

  16. Published: 23 June 2011 Another Revolution Afoot in Egypt

    E-Print Network [OSTI]

    Zewail, Ahmed

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

  17. High-speed synchronous reluctance machine with minimized rotor losses

    SciTech Connect (OSTI)

    Hofmann, H.; Sanders, S.R.

    2000-04-01

    This paper presents a refined design of a high-speed synchronous reluctance machine with minimized eddy-current losses in the rotor. Design criteria are the ability of the rotor to withstand high speeds, ability to operate in vacuum, negligible zero-torque spinning losses, high reliability, high efficiency, and low manufacturing cost. The rotor of the synchronous reluctance machine consists of bonded sections of ferromagnetic and non-magnetic steels. Finite-element code, incorporating rotor rotation, has been developed in MATLAB that calculates steady-state eddy currents (and losses) in the rotor. A stator iron and stator winding have been designed to minimize rotor losses, and two such prototype machines have been fabricated. Experimental results show an efficiency of 91% at a 10-kW 10,000-r/min operating point, and rotor losses less than 0.5% of input power.

  18. Non-equilibrium steady states for chains of four rotors

    E-Print Network [OSTI]

    Noé Cuneo; Jean-Pierre Eckmann

    2015-04-20

    We study a chain of four interacting rotors (rotators) connected at both ends to stochastic heat baths at different temperatures. We show that for non-degenerate interaction potentials the system relaxes, at a stretched exponential rate, to a non-equilibrium steady state (NESS). Rotors with high energy tend to decouple from their neighbors due to fast oscillation of the forces. Because of this, the energy of the central two rotors, which interact with the heat baths only through the external rotors, can take a very long time to dissipate. By appropriately averaging the oscillatory forces, we estimate the dissipation rate and construct a Lyapunov function. Compared to the chain of length three (considered previously by C. Poquet and the current authors), the new difficulty with four rotors is the apparition of resonances when both central rotors are fast. We deal with these resonances using the rapid thermalization of the two external rotors.

  19. Utilization of rotor kinetic energy storage for hybrid vehicles

    DOE Patents [OSTI]

    Hsu, John S. (Oak Ridge, TN)

    2011-05-03

    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.

  20. Electrofriction method of manufacturing squirrel cage rotors

    DOE Patents [OSTI]

    Hsu, John S.

    2005-04-12

    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.

  1. Horizontal wind rotor. Final technical report

    SciTech Connect (OSTI)

    Guard, E.J.

    1983-06-30

    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.

  2. Rotor assembly and method for automatically processing liquids

    DOE Patents [OSTI]

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

    1992-12-22

    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.

  3. 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)

    1992-01-01

    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.

  4. Rotor for processing liquids using movable capillary tubes

    DOE Patents [OSTI]

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

    1987-07-17

    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.

  5. Sandia Energy - Structural and Mechanical Adaptive Rotor Technology...

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

    and Mechanical Adaptive Rotor Technology (SMART) Final Project Reports Published Home Renewable Energy Energy News Wind Energy News & Events Systems Analysis Structural and...

  6. Sandia Energy - National Rotor Testbed Functional Scaling Presented...

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

    show magnitude of velocity deficit. Results of Vortex Method analysis of SWiFT rotor design. Colors show magnitude of velocity deficit. David Maniaci (in Sandia's Wind Energy...

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

    E-Print Network [OSTI]

    Müller, Norbert

    , and CFD models, the wave rotor compression efficiency at microfabrication scale could be estimated, pumps, but also electric generators, heat exchangers, internal combustion engines and rocket engines

  8. Integral twist actuation of helicolpter rotor blades for vibration reduction

    E-Print Network [OSTI]

    Shin, SangJoon, 1967-

    2001-01-01

    Active integral twist control for vibration reduction of helicopter rotors during forward flight is investigated. The twist deformation is obtained using embedded anisotropic piezocomposite actuators. An analytical framework ...

  9. 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)

    2009-05-05

    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.

  10. Control of an Active Magnetic Bearing-Rotor System

    E-Print Network [OSTI]

    Kang, Christopher

    2014-01-01

    Active Magnetic Bearing-RotorRotation of Magnetic Bearing. ” Precision Engineering, 27(and Control of a Magnetic Bearing System. ” In American

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

    DOE Patents [OSTI]

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

    1998-06-02

    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.

  12. China's Real Estate Revolution and the Great China Land Rush

    E-Print Network [OSTI]

    Ross, Madelyn C.; Rosen, Kenneth T.

    1993-01-01

    the boundaries of their real estate activities northward. AsBerkeley CENTER Fon REAL ESTATE AND URBAN ECONOMICS WORKINGNO. 93-215 CH|NA’S REAL ESTATE REVOLUTION AND THE GREAT

  13. 21H.001 How to Stage a Revolution, Fall 2007

    E-Print Network [OSTI]

    Ravel, Jeffrey S.

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

  14. The Currency Revolution in Southern Nigeria 1880-1948

    E-Print Network [OSTI]

    Ibekwe Ofonagoro, Walter

    1976-01-01

    144Ibid, p. 609. 145British rule in Nigeria ended in 1960.Revolution in South-West Nigeria in the Late Nineteenththe Historical Soceity of Nigeria, Vol. 2, No. 1, Dec. 1960,

  15. The Currency of Revolution in Southern Nigeria: 1880-1948

    E-Print Network [OSTI]

    Ibekwe Ofonagoro, Walter

    2012-01-01

    144Ibid, p. 609. 145British rule in Nigeria ended in 1960.Revolution in South-West Nigeria in the Late Nineteenththe Historical Soceity of Nigeria, Vol. 2, No. 1, Dec. 1960,

  16. The Housing Policy Revolution by David J. Erickson

    E-Print Network [OSTI]

    Wegmann, Jake

    2010-01-01

    current state of affordable housing in the United States.contributor to the ongoing housing policy debate that cannotBOOK REVIEW The Housing Policy Revolution By David J.

  17. Turbulence ingestion noise of open rotors

    E-Print Network [OSTI]

    Robison, Rosalyn Aruna Venner

    2012-04-10

    the propfan. 2Higher speeds would be desirable for long-haul flights. The conventional turboprop, a close relative of the open rotor, only delivers efficiency savings when travelling below Mach 0.6, although advanced turboprops do exceed this. 5 6 1... frequency (both of which are different for the propfan and the turbofan) affect annoyance levels (McCurdy, 1990). Tonal noise is usually perceived as more irritating by the human ear than broadband, and frequencies within the range 2-6 kHz are perceived...

  18. 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA Jump to:of theClimateElgin,Wind UK Jump to:Rotors Jump to:

  19. INTRODUCTION 1.1 Aerodynamics of Rotors in Forward Flight

    E-Print Network [OSTI]

    design. In order to capture the above physical phenomena, the influence of the inflow, blade dynamics1 CHAPTER I INTRODUCTION 1.1 Aerodynamics of Rotors in Forward Flight The prediction of rotor blade. Shock induced separation and shock motion along the chord of the blade may occur. Because the inboard

  20. COMPARATIVE MATERIALS EVALUTION FOR A GAS TURBINE ROTOR

    E-Print Network [OSTI]

    Pennycook, Steve

    COMPARATIVE MATERIALS EVALUTION FOR A GAS TURBINE ROTOR 27th Annual Conference on Composites: microturbine, silicon nitride, turbine, CARES, recuperator, ceramic, gas turbine, life analysis #12;COMPARATIVE MATERIALS EVALUTION FOR A GAS TURBINE ROTOR Kesseli et. al Ingersoll-Rand's Ceramic Microturbine (CMT) Plan

  1. 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

    2014-05-01

    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.

  2. Determination of Rotor Temperature for an Interior Permanent Magnet Synchronous

    E-Print Network [OSTI]

    Noé, Reinhold

    of the magnet material monitoring its temperature also helps to increase the accuracy of the estimated torque [1Determination of Rotor Temperature for an Interior Permanent Magnet Synchronous Machine Using@lea.upb.de, boecker@lea.upb.de Abstract--In this paper an enhanced method to de- termine the rotor temperature

  3. SMART wind turbine rotor. Design and field test

    SciTech Connect (OSTI)

    Berg, Jonathan Charles; Resor, Brian Ray; Paquette, Joshua A.; White, Jonathan Randall

    2014-01-01

    The Wind Energy Technologies department at Sandia National Laboratories has developed and field tested a wind turbine rotor with integrated trailing-edge flaps designed for active control of rotor aerodynamics. The SMART Rotor project was funded by the Wind and Water Power Technologies Office of the U.S. Department of Energy (DOE) and was conducted to demonstrate active rotor control and evaluate simulation tools available for active control research. This report documents the design, fabrication, and testing of the SMART Rotor. This report begins with an overview of active control research at Sandia and the objectives of this project. The SMART blade, based on the DOE / SNL 9-meter CX-100 blade design, is then documented including all modifications necessary to integrate the trailing edge flaps, sensors incorporated into the system, and the fabrication processes that were utilized. Finally the test site and test campaign are described.

  4. SMART wind turbine rotor. Data analysis and conclusions

    SciTech Connect (OSTI)

    Berg, Jonathan Charles; Barone, Matthew Franklin; Yoder, Nathanael C.

    2014-01-01

    The Wind Energy Technologies department at Sandia National Laboratories has developed and field tested a wind turbine rotor with integrated trailing-edge flaps designed for active control of the rotor aerodynamics. The SMART Rotor project was funded by the Wind and Water Power Technologies Office of the U.S. Department of Energy (DOE) and was conducted to demonstrate active rotor control and evaluate simulation tools available for active control research. This report documents the data post-processing and analysis performed to date on the field test data. Results include the control capability of the trailing edge flaps, the combined structural and aerodynamic damping observed through application of step actuation with ensemble averaging, direct observation of time delays associated with aerodynamic response, and techniques for characterizing an operating turbine with active rotor control.

  5. Rotor and bearing system for a turbomachine

    DOE Patents [OSTI]

    Lubell, Daniel; Weissert, Dennis

    2006-09-26

    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.

  6. Tip cap for a turbine rotor blade

    DOE Patents [OSTI]

    Kimmel, Keith D

    2014-03-25

    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.

  7. Double-rotor rotary engine and turbine

    SciTech Connect (OSTI)

    Lin, A.S.

    1990-04-03

    This patent describes a double-rotor engine. It comprises: a base; a housing rotatably mounted to the base and forming a radial cylinder; an output shaft rotatably mounted concentric with the housing and having an arm rigidly extending therefrom within the housing; a piston slidingly engaging the cylinder and forming a combustion chamber with the cylinder; means for admitting a fuel-air mixture into the cylinder; means for releasing combustion products from the cylinder following operation of the expanding means; turbine means operatively connected between the base and the housing, the turbine means providing a torque reaction against the housing in response to flow of the combustion products from the releasing means; and stop means on the shaft for limiting the relative movement between the shaft and the housing.

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

    E-Print Network [OSTI]

    Nariya Uchida; Ramin Golestanian

    2010-04-28

    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.

  9. Control coil arrangement for a rotating machine rotor

    DOE Patents [OSTI]

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

    2001-07-31

    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.

  10. Geology and Geophysics at The University of Kansas Geology's High-Tech Revolution

    E-Print Network [OSTI]

    GHAWKER Geology and Geophysics at The University of Kansas Fall 2009 Geology's High-Tech Revolution Associates Program of the Kansas University Endowment Association. The High-Tech Revolution A geologist

  11. Biden Says U.S. Will Lead Energy Revolution | Department of Energy

    Office of Environmental Management (EM)

    U.S. Will Lead Energy Revolution Biden Says U.S. Will Lead Energy Revolution May 24, 2011 - 2:48pm Addthis Vice-President Joe Biden spoke about clean-energy partnerships between...

  12. Travel, work, and telecommunications: a view of the electronics revolution and its potential impacts

    E-Print Network [OSTI]

    Garrison, William L.; Deakin, Elizabeth

    2006-01-01

    TELECOMMUNICATIONS: A VIEW OF THE ELECTRONICS REVOLUTION ANDtechnologies and other electronics innovations ontelecommunications and other electronics innovations on the

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

    E-Print Network [OSTI]

    Stockie, John

    Academic Journals The Open Access Revolution Choosing Where to Publish Academic Journal Publishing and the Open Access Revolution John Stockie CFD Group Presentation June 10, 2013 Academic Journal Publishing John Stockie ­ SFU 1/35 #12;Academic Journals The Open Access Revolution Choosing Where to Publish

  14. Bibliography of the French Revolution Pamphlets Special Collections, University of Colorado at Boulder

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    Bibliography of the French Revolution Pamphlets © Special Collections, University of Colorado or email spc@colorado.edu. Bibliography of the French Revolution Pamphlet Collection Special Collections;Bibliography of the French Revolution Pamphlets © Special Collections, University of Colorado at Boulder Fouché

  15. Methods and apparatus for rotor blade ice detection

    DOE Patents [OSTI]

    LeMieux, David Lawrence

    2006-08-08

    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. SMART Wind Turbine Rotor: Design and Field Test

    SciTech Connect (OSTI)

    Berg, Jonathan C.; Resor, Brian R.; Paquette, Joshua A.; White, Jonathan R.

    2014-01-29

    This report documents the design, fabrication, and testing of the SMART Rotor. This work established hypothetical approaches for integrating active aerodynamic devices (AADs) into the wind turbine structure and controllers.

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

    E-Print Network [OSTI]

    Phoenix, Casey J. (Casey John)

    2007-01-01

    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 ...

  18. A Navier boundary value problem for Willmore surfaces of revolution #

    E-Print Network [OSTI]

    Grunau, Hans-Christoph

    A Navier boundary value problem for Willmore surfaces of revolution # Klaus Deckelnick + and Hans Forschungsgemeinschaft (DFG) is gratefully acknowledged + e­mail: Klaus.Deckelnick@ovgu.de # e­mail: Hans of closed Willmore surfaces of prescribed genus was proved by Simon [Sn] and Bauer & Kuwert [BK]. Con

  19. A Method for Generating Phyllotaxis over Surfaces of Revolution

    E-Print Network [OSTI]

    McCormack, Jon

    Lindenmayer systems (L-systems) to model phyllotaxis in plants for the purposes of generat- ing realistic. Example images of plants, generated using this model, are also il- lustrated. #12;2 A MethodA Method for Generating Phyllotaxis over Surfaces of Revolution Jon McCormack Centre for Electronic

  20. The Internet and past and future communications revolutions

    E-Print Network [OSTI]

    Odlyzko, Andrew M.

    The Internet and past and future communications revolutions Andrew Odlyzko School of Mathematics version, September 28, 2009 Predicting the evolution of the Internet is an error-prone business issue of Internet Computing. The authors were all Internet luminaries with sterling records. Yet

  1. Published: 14 October 2013 The Revolution Egypt Needs

    E-Print Network [OSTI]

    Zewail, Ahmed

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

  2. Reformation and Revolution in Early Modern England History 418

    E-Print Network [OSTI]

    Fletcher, Robin

    1 Reformation and Revolution in Early Modern England History 418 Consider Resources Primary (Online) Oxford Encyclopedia of the Reformation (Online) Oxford Dictionary of National Biography (Online and reformation B. Look up Historical Figures, Organizations, and Agencies... If you know of a person involved

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

    DOE Patents [OSTI]

    Moroz, Emilian Mieczyslaw

    2006-08-22

    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.

  4. Entanglement in the states of the Two-Rotor-Model

    E-Print Network [OSTI]

    Palumbo, Fabrizio

    2015-01-01

    The eigenfunctions of the Two-Rotors Model are superpositions of states corresponding to precessions of the rotors around two orthogonal axes. In Nuclear Physics such an entanglement has not been directly confirmed. We discuss how it might be observed and compare with the application of the TRM to single domain nanoparticles. In the latter case, in addition to the present indirect evidence there is the possibility of direct observation in experiments at temperatures of the order of 1 K.

  5. 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)

    2014-02-15

    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.

  6. Action in the Entropic Revolution of Newtonian Gravity

    E-Print Network [OSTI]

    Joakim Munkhammar

    2010-05-17

    The theory of gravity has undergone somewhat of a revolution lately. Gravity is no longer a fundamental force it seems, but rather an effect of holographic entropy. Building on the works by Jacobsson, Padmanabhan and Verlinde we review the concept of Newtonian gravity as an entropic force and discuss a possible general action approach to Verlinde's theory. We also discuss some open problems and future prospects of Verlinde's approach.

  7. Hi-Q Rotor - Low Wind Speed Technology

    SciTech Connect (OSTI)

    Todd E. Mills; Judy Tatum

    2010-01-11

    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.

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

    E-Print Network [OSTI]

    San Andres, Luis

    2009-01-01

    Equations of motion of a rigid rotor. The concept of force coefficients. Derivation of stiffness and damping coefficients for the short bearing. Stability analysis and the effect of cross-coupled stiffness. Effect of rotor flexibility on stability...

  9. Method and apparatus for assembling permanent magnet rotors

    DOE Patents [OSTI]

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

    1999-06-22

    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.

  10. Method and apparatus for assembling permanent magnet rotors

    DOE Patents [OSTI]

    Hsu, John S. (Oak Ridge, TN); Adams, Donald J. (Knoxville, TN)

    1999-01-01

    A permanent magnet assembly (22) for assembly in large permanent magnet (PM) motors and generators includes a two-piece carrier (23, 24) that can be slid into a slot (13) in the rotor (10) and then secured in place using a set screw (37). The invention also provides an auxiliary carrier device (50) with guide rails (51) that line up with the teeth (12) of the rotor, so that a permanent magnet assembly (22) can be pushed first into a slot (13), and then down the slot (13) to its proper location. An auxiliary tool (50) is provided to move the permanent magnet assembly (22) into position in the slot (13) before it is secured in place. Methods of assembling and disassembling the magnet assemblies (22) in the rotor (10) are also disclosed.

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

    E-Print Network [OSTI]

    Toward a Better Understanding of Ducted Rotor Antitorque and Directional Control in Forward Flight of ducted rotors in low-power, near-edgewise flow conditions are not well understood. Motivated by phenomena was initiated to use CFD to improve the understanding of the dynamic relationship between ducted rotor thrust

  12. Numerical Investigation of Aerodynamic Performance and Loads of a Novel Dual Rotor Wind Turbine

    E-Print Network [OSTI]

    Hu, Hui

    Numerical Investigation of Aerodynamic Performance and Loads of a Novel Dual Rotor Wind Turbine-rotor wind turbine (DRWT) proposed by Rosenberg et al.1 Assuming that the turbine operates in isolation. Comparisons are drawn with the corresponding analyses of a com- parable conventional single-rotor wind turbine

  13. 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

  14. Dynamic Response of a Rotor-air Bearing System Due to Base Induced Periodic Motions 

    E-Print Network [OSTI]

    Niu, Yaying

    2010-01-14

    , the base motion frequencies (5-12 Hz) are low respective to the operating speed of the rotor-bearing system. Rotor speed coast down tests evidence the rotor-bearing system natural frequency when the gas bearings are supplied with feed pressures increasing...

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

    E-Print Network [OSTI]

    Müller, Norbert

    of wave energy exchange and proposed a wave rotor design for aircraft turbofan engines (Taussig, 1984.S. Navy expressed interest and sponsored programs to develop an understanding of wave rotor technology. Many developments were presented in the 1985 ONR/NAVAIR Wave Rotor Research and Technology Workshop

  16. A review of "Rethinking the Scientific Revolution." by Margaret J. Osler, ed. 

    E-Print Network [OSTI]

    Renzo Baldasso

    2002-01-01

    , this volume comprises fifteen essays. Its coherence comes from the authors? engagement with some aspect of the Sci- entific Revolution. Despite the title, no essay is a real attempt to rethink the Scientific Revolution. Rather, ?this book reflects... the problematization of the canon in recent scholarship? (3). Each essay provides valuable qualifications to the recent efforts of rein- terpreting the Scientific Revolution. Collectively, these papers not only provide to the reader food for thought, but they also...

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

    E-Print Network [OSTI]

    Key, Newton

    2012-01-01

    ???????????-???? ? ???? continued optimism that Christ was going to return and institute a better world is amply demonstrated in this detailed and worthy study. Steve Pincus. 1688: ? e First Modern Revolution. New Haven: Yale University Press, 2009, 2011. xiii + 647 pp. $25....00 pbk. Review by ?????? ???, ????? ? ?? ?? ? ? ?? ? ?? In 1989, Margaret ? atcher used a bicentennial of the French Revolution to contrast it unfavorably with England?s anti-revolution of 1688. Steve Pincus, however, in his massive study...

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

    E-Print Network [OSTI]

    Fort, Gilberto V.

    1969-01-01

    encountered in the 14 REVOLUTION Sierra Maestra after the revolution, and explains his reasons for leaving Cuba. In cluded is the text of the letter he addressed to Fidel Castro when he resigned his position in the Cuban government. 84 Beals, Carleton... encountered in the 14 REVOLUTION Sierra Maestra after the revolution, and explains his reasons for leaving Cuba. In cluded is the text of the letter he addressed to Fidel Castro when he resigned his position in the Cuban government. 84 Beals, Carleton...

  19. SMART Wind Turbine Rotor: Data Analysis and Conclusions

    SciTech Connect (OSTI)

    Berg, Jonathan C.; Barone, Matthew F.; Yoder, Nathanael C.

    2014-01-29

    This report documents the data post-processing and analysis performed to date on the field test data. Results include the control capability of the trailing edge flaps, the combined structural and aerodynamic damping observed through application of step actuation with ensemble averaging, direct observation of time delays associated with aerodynamic response, and techniques for characterizing an operating turbine with active rotor control.

  20. 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

  1. 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 and providing longer turbine life GE's unique electronics provide transmission efficiencies and enable harmonious function within the local grid Allows wind turbines to stay on line generating power, even during

  2. The MEMS Technology Revolution Is Beginning | GE Global Research

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With U.S.Week Day Year(activeInforum LIFTMEMS Technology Revolution Is

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

    Research-Technology Management · November--December 2013 | 1 Before the Industrial Revolution linked to the producer; there was no middleman and no supply chain. The Industrial Revolution ushered to the manufacturing sector as the Industrial Revolution was--the age of 3D printing and the digital tools that support

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

    SciTech Connect (OSTI)

    Ashwill, Thomas D.

    2010-02-01

    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.

  6. Adaptor assembly for coupling turbine blades to rotor disks

    DOE Patents [OSTI]

    Garcia-Crespo, Andres Jose; Delvaux, John McConnell

    2014-09-23

    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.

  7. Aeroacoustics and aerodynamic performance of a rotor with flatback airfoils.

    SciTech Connect (OSTI)

    Paquette, Joshua A.; Barone, Matthew Franklin; Christiansen, Monica; Simley, Eric

    2010-06-01

    The aerodynamic performance and aeroacoustic noise sources of a rotor employing flatback airfoils have been studied in field test campaign and companion modeling effort. The field test measurements of a sub-scale rotor employing nine meter blades include both performance measurements and acoustic measurements. The acoustic measurements are obtained using a 45 microphone beamforming array, enabling identification of both noise source amplitude and position. Semi-empirical models of flatback airfoil blunt trailing edge noise are developed and calibrated using available aeroacoustic wind tunnel test data. The model results and measurements indicate that flatback airfoil noise is less than drive train noise for the current test turbine. It is also demonstrated that the commonly used Brooks, Pope, and Marcolini model for blunt trailing edge noise may be over-conservative in predicting flatback airfoil noise for wind turbine applications.

  8. 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)

    2011-07-12

    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.

  9. Blade platform seal for ceramic/metal rotor assembly

    DOE Patents [OSTI]

    Wertz, John L. (Indianapolis, IN)

    1982-01-01

    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.

  10. How Peircean was the "'Fregean' Revolution" in Logic?

    E-Print Network [OSTI]

    Anellis, Irving H

    2012-01-01

    The historiography of logic conceives of a Fregean revolution in which modern mathematical logic (also called symbolic logic) has replaced Aristotelian logic. The preeminent expositors of this conception are Jean van Heijenoort (1912-1986) and Donald Angus Gillies. The innovations and characteristics that comprise mathematical logic and distinguish it from Aristotelian logic, according to this conception, created ex nihlo by Gottlob Frege (1848-1925) in his Begriffsschrift of 1879, and with Bertrand Russell (1872-1970) as its chief This position likewise understands the algebraic logic of Augustus De Morgan (1806-1871), George Boole (1815-1864), Charles Sanders Peirce (1838-1914), and Ernst Schr\\"oder (1841-1902) as belonging to the Aristotelian tradition. The "Booleans" are understood, from this vantage point, to merely have rewritten Aristotelian syllogistic in algebraic guise. The most detailed listing and elaboration of Frege's innovations, and the characteristics that distinguish mathematical logic from ...

  11. 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)

    2008-04-01

    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.

  12. HIGH EFFICIENCY STRUCTURAL FLOWTHROUGH ROTOR WITH ACTIVE FLAP CONTROL: VOLUME ONE: PRELIMINARY DESIGN REPORT

    SciTech Connect (OSTI)

    Zuteck, Michael D.; Jackson, Kevin L.; Santos, Richard A.; Chow, Ray; Nordenholz, Thomas R.; Wamble, John Lee

    2015-05-16

    The Zimitar one-piece rotor primary structure is integrated, so balanced thrust and gravity loads flow through the hub region without transferring out of its composite material. Large inner rotor geometry is used since there is no need to neck down to a blade root region and pitch bearing. Rotor control is provided by a highly redundant, five flap system on each blade, sized so that easily handled standard electric linear actuators are sufficient.

  13. HIGH EFFICIENCY STRUCTURAL FLOWTHROUGH ROTOR WITH ACTIVE FLAP CONTROL: VOLUME THREE: MARKET & TEAM

    SciTech Connect (OSTI)

    Zuteck, Michael D.; Jackson, Kevin L.; Santos, Richard A.

    2015-05-16

    The Zimitar one-piece rotor primary structure is integrated, so balanced thrust and gravity loads flow through the hub region without transferring out of its composite material. Large inner rotor geometry is used since there is no need to neck down to a blade root region and pitch bearing. Rotor control is provided by a highly redundant, five flap system on each blade, sized so that easily handled standard electric linear actuators are sufficient.

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

    DOE Patents [OSTI]

    Schmidt, Mark Christopher (Niskayuna, NY)

    2001-01-01

    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.

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

    DOE Patents [OSTI]

    Moroz, Emilian Mieczyslaw; Pierce, Kirk Gee

    2006-10-10

    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.

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

    E-Print Network [OSTI]

    Müller, Norbert

    , a gasdynamic model, and CFD models, the wave rotor compression efficiency at microfabrication scale could like turbines, compressors, pumps, but also electric generators, heat exchangers, internal combustion

  17. Sandia Energy - The Influence of Rotor Blade Design on Wake Developmen...

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

    Influence of Rotor Blade Design on Wake Development Home Renewable Energy Energy SWIFT Facilities News Wind Energy News & Events Systems Analysis Systems Engineering The Influence...

  18. Gordon Bell visits Livermore, gets a look at the HPC revolution...

    National Nuclear Security Administration (NNSA)

    "nothing has changed since my first visit in 1961." But when it comes to high performance computing at LLNL, much has changed thanks to the computing technology revolution Bell...

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

    E-Print Network [OSTI]

    Cornelison, J. Garrett

    2013-02-22

    right to a left brain dominance allowed for the creation of classical philosophy and the sciences as a result of the abstract thought that is made possible through literacy. The Digital Revolution, involving our new technologically advanced forms...

  20. Framing the Revolution: Triana's La noche de los asesinos and Ceremonial de guerra

    E-Print Network [OSTI]

    Taylor, Diana

    1990-10-01

    and meaning of revolution. The three children endlessly re-enact the murder of their parents, repeating thus the prototypical act of parricide and rebellion which dates back to the three Cyclopes. By conflating parricide and rebellion, Asesinos offers a... and meaning of revolution. The three children endlessly re-enact the murder of their parents, repeating thus the prototypical act of parricide and rebellion which dates back to the three Cyclopes. By conflating parricide and rebellion, Asesinos offers a...

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

    E-Print Network [OSTI]

    Podliska, Bradley Florian

    2009-06-02

    -1 ACTING ALONE: U.S. UNILATERAL USES OF FORCE, MILITARY REVOLUTIONS, AND HEGEMONIC STABILITY THEORY A Dissertation by BRADLEY FLORIAN PODLISKA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of DOCTOR OF PHILOSOPHY August 2007 Major Subject: Political Science ACTING ALONE: U.S. UNILATERAL USES OF FORCE, MILITARY REVOLUTIONS, AND HEGEMONIC STABILITY THEORY A Dissertation...

  2. MHK Technologies/Wave Rotor | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar <OMISPower Desalination < MHKRiderRotor

  3. 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

  4. 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

  5. Double Side Control of Wound Rotor Induction Machine for Wind Energy Application Employing Half Controlled

    E-Print Network [OSTI]

    Lipo, Thomas

    of the machine. By doing so, the winding design (copper volume) and losses in the machine as well as in the power-of-the-art technology for wind power employs a doubly-fed machine with only rotor side control where the stator2005-27 Double Side Control of Wound Rotor Induction Machine for Wind Energy Application Employing

  6. 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

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

    E-Print Network [OSTI]

    Müller, Norbert

    1 ISABE-2005-1214 Optimum Applications of Four-Port Wave Rotors for Gas Turbines Enhancement Emmett investigations on wave rotor applications for gas turbines have been published, among them conceptual, analytical in the gas turbine industry. The results and conclusions are derived from a wide- range multi

  8. Passivity-based control of a wound-rotor synchronous Arnau D`oria-Cerezoa

    E-Print Network [OSTI]

    Batlle, Carles

    rotor synchronous machine (WRSM) is used for generation and also for drive ap- plications [1 methods has been proposed in [9], and the specific cases for synchronous generators and drives canPassivity-based control of a wound-rotor synchronous motor Arnau D`oria-Cerezoa , Carles Batlleb

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

    E-Print Network [OSTI]

    Rubio Tabares, Dario

    2006-08-16

    ? foil journal bearings. Coastdown tests from 61,000 rpm Steady state motions at subsynchronous rigid body mode frequencies limited in magnitude. Similar dynamic performance of the rotor system for vertical and horizontal operations. 2002 Swason E...????????????????????????????? 65 Predicted Bearing Performance?????????????????... 65 Journal Eccentricity and Attitude Angle??????????????. 68 Predicted Bearing Force Coefficients???????????????.. 72 Predicted Rotor/Bearing Performance???????????????. 75 Damped Natural...

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

    E-Print Network [OSTI]

    Müller, Norbert

    and significant potential of wave rotor technology for performance improvement of gas turbine and jet engines and expansion waves to add or remove energy from a fluid flow. It has been proved that for modest pressureAmerican Institute of Aeronautics and Astronautics 1 Wave Rotor Research Program at Michigan State

  11. 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

  12. Granular rotor as a probe for a non-equilibrium bath

    E-Print Network [OSTI]

    Tomohiko G. Sano; Kiyoshi Kanazawa; Hisao Hayakawa

    2015-11-27

    The dynamics of a rotor under viscous or dry friction is investigated as a non-equilibrium probe of a granular gas numerically and analytically. To demonstrate a role of the rotor as a probe for a non-equilibrium bath, we perform the molecular dynamics (MD) simulation of the rotor under viscous or dry friction surrounded by a steady granular gas under gravity. We theoretically derive a one-to-one map between the velocity distribution function (VDF) for the granular gas and the angular one for the rotor. With the aid of the MD simulation, we demonstrate that the one-to-one map works well to infer the local VDF of the granular gas from the angular one of the rotor, and vice versa.

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

    E-Print Network [OSTI]

    Luger, George

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

  14. Characteristics of a multiple disk pump with turbulent rotor flow 

    E-Print Network [OSTI]

    Roddy, Patrick James

    1985-01-01

    of these turbomachines until the early sixties when Rice [4] designed and tested a multiple disk pump and compressor. Since then, the per- formance of these turbomachines operating with laminar rotor flow has been well documented [1-6, 7-12]. In the seventies, Bakke... the Disk Radius (LT'8) [ (8 + |/)/T + ( aH/8)]2 2T/T ruotq. znba [gy] yyzqoznqg g~otTdxa aqua. go surzag u) passaudxa aq uzo zoq. ozg uoTgo)zg 9uxuuzg aqua '(gT'2) uoTgznba uZ (9T'2) (au 2/1 2 2 ( (n) + (& ? &U)) = sz r(s)p aqua Suoyz guxod fiuz gz...

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

    SciTech Connect (OSTI)

    1996-09-01

    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.

  16. Cooling system for a bearing of a turbine rotor

    DOE Patents [OSTI]

    Schmidt, Mark Christopher (Niskayuna, NY)

    2002-01-01

    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.

  17. 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

    2014-06-03

    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.

  18. 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.

    2015-06-19

    mouth opening ?r rotor angular velocity R,C,N,Z fields of real and complex numbers, sets of natural numbers and integers diag(X1, X2, · · · ) Diagonal matrix with scalars or matrices X1, X2 etc. kw winding factor for a single loop in a nest Neff... p 2 ) sin (?srp 2 ) ?srp 2 (18) Where ? is the individual coil span of the loop, p is the rotor harmonic pole pair given in the set (17) and ?sr is the angular slot mouth span. The self-inductance evaluated for all rotor loops of a specific span...

  19. Method and system for controlling a rotational speed of a rotor of a turbogenerator

    DOE Patents [OSTI]

    Stahlhut, Ronnie Dean; Vuk, Carl Thomas

    2008-12-30

    A system and method controls a rotational speed of a rotor or shaft of a turbogenerator in accordance with a present voltage level on a direct current bus. A lower threshold and a higher threshold are established for a speed of a rotor or shaft of a turbogenerator. A speed sensor determines speed data or a speed signal for the rotor or shaft associated with a turbogenerator. A voltage regulator adjusts a voltage level associated with a direct current bus within a target voltage range if the speed data or speed signal indicates that the speed is above the higher threshold or below the lower threshold.

  20. Rotor spectra, berry phases, and monopole fields: From antiferromagnets to QCD

    SciTech Connect (OSTI)

    Chandrasekharan, S.; Jiang, F.-J.; Wiese, U.-J.; Pepe, M.

    2008-10-01

    The order parameter of a finite system with a spontaneously broken continuous global symmetry acts as a quantum mechanical rotor. Both antiferromagnets with a spontaneously broken SU(2){sub s} spin symmetry and massless QCD with a broken SU(2){sub L}xSU(2){sub R} chiral symmetry have rotor spectra when considered in a finite volume. When an electron or hole is doped into an antiferromagnet or when a nucleon is propagating through the QCD vacuum, a Berry phase arises from a monopole field and the angular momentum of the rotor is quantized in half-integer units.

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

    E-Print Network [OSTI]

    Gaffney, Jennifer Ann

    2014-04-23

    AND EMANCIPATION: VOTING RIGHTS DURING THE HAITIAN REVOLUTION AFTER 1793 A Thesis by JENNIFER ANN GAFFNEY Submitted to the Office of Graduate and Professional Studies Texas A&M University in partial fulfillment of the requirements for the degree.... In light of this, I argue that the election of 1793 constituted a moment during which the colonized took up and expanded the ideals of the French Revolution beyond what had been imagined by those in the metropole. By 1795, however, a new constitution had...

  2. A review of "Writings of Exile in the English Revolution and Restoration" by Philip Major 

    E-Print Network [OSTI]

    D'Addario, Christopher

    2014-01-01

    understanding of the psychological and literary effects of defeat, banishment and dislocation in early modern England has been Philip Major. His new book, Writings of Exile in the English Revolution and Restoration, is the enlightening and meticulous... stream_source_info Review of %22Writings of Exile in the English Revolution and Restoration%22 by Major reviewer D'Addario.pdf.txt stream_content_type text/plain stream_size 9880 Content-Encoding UTF-8 stream_name Review of %22...

  3. A review of "The Jewel House. Elizabethan London and the Scientific Revolution" by Deborah Harkness 

    E-Print Network [OSTI]

    Cormack, Lesley B.

    2008-01-01

    as informative and ambitious as this one deserved better copy-editing. Deborah Harkness. The Jewel House. Elizabethan London and the Scientific Revolution. New Haven and London: Yale University Press, 2007. xxii + 349 pp. + 20 b&w illus. $32.50. Review by Le... s L e y B. co r m a c k , si m o n Fr a s e r un i v e r s i t y . Historians of science have long had a love-hate relationship with the ?Scientific Revolution?. While early practitioners welcomed the term to denote the modern turn...

  4. A review of "The Age of Milton and the Scientific Revolution" by Angelica Duran 

    E-Print Network [OSTI]

    Berry, Boyd M.

    2007-01-01

    Duran. The Age of Milton and the Scientific Revolution. Pittsburgh: Duquesne University Press, 2007, pp. 349, $58.00. Review by BOYD M. BERRY, VIRGINIA COMMONWEALTH UNIVERSITY. One could argue that Angelica Duran has written a book about... the advancement of learning in seventeenth-century England, and that hers in effect advances a similar goal today. To put it in that abstract way is of course to occlude the two massive abstractions of her title, The Age of Milton and the Scientific Revolution...

  5. Effects of rotor tip blade loading variation on compressor stage performance

    E-Print Network [OSTI]

    Tiralap, Aniwat

    2015-01-01

    Changes in loss generation associated with altering the rotor tip loading of an embedded compressor stage is assessed. Steady and unsteady three-dimensional computations, complemented by control volume analyses, for varying ...

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

    E-Print Network [OSTI]

    Faulkner, Henry B.

    1976-01-01

    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 ...

  7. The effects of torsional-lateral coupling on the dynamics of a gear coupled rotor 

    E-Print Network [OSTI]

    Emery, Michael Aaron

    2007-04-25

    This thesis focuses on the torsional-lateral interactions seen in gear coupled rotors. Of particular interest are cases where the torsional stiffness parameters affect the lateral critical speeds and where lateral stiffness and damping parameters...

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

    E-Print Network [OSTI]

    Ortiz, Steven Rey

    2013-02-22

    . 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...

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

    E-Print Network [OSTI]

    Sakulkaew, Sitanun

    2012-01-01

    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 ...

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

    E-Print Network [OSTI]

    Ryu, Keun

    2012-02-14

    Gas foil bearings (GFBs) operating at high temperature rely on thermal management procedures that supply needed cooling flow streams to keep the bearing and rotor from overheating. Poor thermal management not only makes ...

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

    E-Print Network [OSTI]

    Balantrapu, Achuta Kishore Rama Krishna

    2005-11-01

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

    E-Print Network [OSTI]

    Zhu, Xuehua

    2004-11-15

    Gas bearings enable successful applications in high speed oil-free microturbomachinery. This thesis presents analysis and experiments of the dynamic performance of a rotor supported on Rayleigh step gas bearings. Comprehensive experiments...

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

    E-Print Network [OSTI]

    Zutavern, Zachary Scott

    2009-06-02

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

  14. 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

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

    E-Print Network [OSTI]

    Parker, Gary B.

    BASIC CONTROL FOR FOUR ROTOR AUTONOMOUS AERIAL AGENT JONATHAN MCLEAN, CONNECTICUT COLLEGE, USA, JMMCL2@CONNCOLL.EDU GARY PARKER, CONNECTICUT COLLEGE, USA, PARKER@CONNCOLL.EDU NEWELL SEAL, CONNECTICUT

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

    E-Print Network [OSTI]

    Julian, Brian John

    2009-01-01

    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 ...

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

    E-Print Network [OSTI]

    Collard, Joseph Eugene

    2000-01-01

    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 ...

  18. Spin-rotor Interpretation of Identical Bands and Quantized Alignment in Superdeformed A $\\approx$ 190 Nuclei

    E-Print Network [OSTI]

    J. A. Cizewski; R. Bijker

    1995-06-02

    The ``identical'' bands in superdeformed mercury, thallium, and lead nuclei are interpreted as examples of orbital angular momentum rotors with the weak spin-orbit coupling of pseudo-$SU(3)$ symmetries and supersymmetries.

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

    DOE Patents [OSTI]

    Moroz, Emilian Mieczyslaw; Pierce, Kirk Gee

    2006-10-17

    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.

  20. 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.

  1. Scientic revolutions are sometimes quiet. Despite a lack of public fanfare,

    E-Print Network [OSTI]

    Spirtes, Peter

    Scienti½c revolutions are sometimes quiet. Despite a lack of public fanfare, there is mounting; · Using measurements of reflected solar energy (technically, the visible-near infrared spectrum at the Swedish Institute for Space Physics realized that an instru- ment aboard a satellite was malfunc- tioning

  2. The Ongoing Revolution in Software Testingg g g Cem Kaner, J.D., Ph.D.

    E-Print Network [OSTI]

    accepted assumptions about our mission, skills, and constraints, including plenty that seemed good to me several "best practices" and other shared beliefs about the nature of testing. Ongoing Revolution--October 2007 Copyright © Cem Kaner 3 #12;Best Practices? Let's be clear about what we mean when we say, "Best

  3. DepartmentofPhysics Physics is at the heart of both the technological revolution and science

    E-Print Network [OSTI]

    Monnier, John D.

    progress, propelling the revolution in telecommunications and inspiring entirely new industries in medical- matic education can transform hearts and minds, can solve problems in a changing world, can yield ideas and most active fields of science. Its goal is to understand the behavior of matter and energy on every

  4. A revolution in ICT, the last hope for African Rural Communities' technology appropriation

    E-Print Network [OSTI]

    Blake, Edwin

    A revolution in ICT, the last hope for African Rural Communities' technology appropriation Gereon on the challenge of designing products suited to rural practices and conceptualizations in Southern Africa. To create a framework compatible with rural customs of information transfer and supportive of rural

  5. The next step in the wireless revolution is the connection of everyday devices through wireless

    E-Print Network [OSTI]

    California at San Diego, University of

    - Electrical and Computer Engineering Wireless Embedded Systems Graduate Education for EngineeringThe next step in the wireless revolution is the connection of everyday devices through wireless technology (so-called embedded wireless). This technology is expected to explode in the next decade

  6. Analytics over Large-Scale Multidimensional Data: The Big Data Revolution!

    E-Print Network [OSTI]

    Song, Il-Yeol

    Analytics over Large-Scale Multidimensional Data: The Big Data Revolution! Alfredo Cuzzocrea ICAR in the field of analytics over big data, and we extend the discussion to analytics over big multidimensional, Management, Performance, Theory Keywords Analytics over Big Data, Analytics over Big Multidimensional Data

  7. Supermarket revolution in Asia and emerging development strategies to include small farmers

    E-Print Network [OSTI]

    Wang, Changlu

    , initially, procurement by modern retail was only from the spot wholesale markets, and few standards were on Markets in Asia, Michigan State University, East Lansing, MI 48824; c Harvard University, Cambridge, MA been significant and unique. Second, Asia's super- market revolution has exhibited unique pathways

  8. Internet Revolution: Current Status and Future Challenges Instructor: Dr. Borko Furht, Florida Atlantic University

    E-Print Network [OSTI]

    Furht, Borko

    Internet Revolution: Current Status and Future Challenges Instructor: Dr. Borko Furht, Florida Atlantic University Description: In this seminar we first present the state-of-the-art in the Internet technology including a digital nervous system, which is built around the Internet. We then discuss

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

    E-Print Network [OSTI]

    Mavroidis, Constantinos

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

  10. RAMGEN ROTOR CARTRIDGE FOR THE PRE-PROTOTYPE RAMGEN ENGINE

    SciTech Connect (OSTI)

    Aaron Koopman

    2003-09-01

    The research and development of a unique combustion engine is presented. The engine converts the thrust from ramjet modules located on the rim of a disk into shaft torque, which in turn can be used for electrical power generation or mechanical drive applications. A test program was undertaken that included evaluation of the pre-prototype engine and incorporation of improvements to the thrust modules and supporting systems. Fuel mixing studies with vortex generators and bluff body flame holders demonstrated the importance of increasing the shear-layer area and spreading angle to augment flame volume. Evaluation of flame-holding configurations (with variable fuel injection methods) concluded that the heat release zone, and therefore combustion efficiency, could be manipulated by judicious selection of bluff body geometry, and is less influenced by fuel injection distribution. Finally, successful operation of novel fuel and cooling air delivery systems have resolved issues of gas (fuel and air) delivery to the individual rotor segments. The lessons learned from the pre-prototype engine are currently being applied to the development of a 2.8MW engine.

  11. Control system for a wound-rotor motor

    DOE Patents [OSTI]

    Ellis, James N. (Chatsworth, CA)

    1983-01-01

    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.

  12. When Skeletons Are Geared for Speed: The Morphology, Biomechanics, and Energetics of Rapid Animal Motion

    E-Print Network [OSTI]

    McHenry, Matt

    SYMPOSIUM When Skeletons Are Geared for Speed: The Morphology, Biomechanics, and Energetics that a muscular contraction displaces an appendage is determined by the gearing provided by the joints of a skeleton. Species that move rapidly commonly possess joints with relatively high gears that produce a large

  13. 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

    2010-05-28

    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.

  14. 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

    2015-09-03

    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.

  15. Ingestion of high temperature mainstream gas into the rotor-stator cavities of a gas turbine is one of the major problems faced by the turbine designers. The ingested gas heats up rotor disks and induces higher

    E-Print Network [OSTI]

    Ingestion of high temperature mainstream gas into the rotor-stator cavities of a gas turbine is one of the major problems faced by the turbine designers. The ingested gas heats up rotor disks and induces higher a negative effect on the gas turbine thermal efficiency, one goal is to use the least possible amount

  16. Seedlings of a contested modernity: new 'Green Revolution' claims and their implications on the seed sovereignty in Ethiopia 

    E-Print Network [OSTI]

    Beghini, Stella

    2014-11-27

    Revolution’ in Africa. Ethiopia, a country marked by dramatic famines in the last century, is trying to adopt a paradigm lying on technological innovation, commodification of seeds and providing access to the market for smallholder farmers. This dissertation...

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

    E-Print Network [OSTI]

    Tombaugh, William

    2013-08-31

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

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

    DOE Patents [OSTI]

    Mashey, Thomas Charles (Anderson, SC)

    2002-01-01

    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.

  19. A review of "The English Atlantic in an Age of Revolution, 1640-1661." by Carla Gardina Pestana 

    E-Print Network [OSTI]

    Ward, Joseph P.

    2006-01-01

    some of the leading figures in the English Revolution claimed that their objective was to end tyranny and restore liberty, the policies of the REVIEWS 71 Interregnum governments instead promoted unfreedom throughout the Atlantic. The Navigation Act...-forgotten group to their rightful place in history, and should prove a compelling read for seventeenth-century scholars and enthusiasts alike. Carla Gardina Pestana. The English Atlantic in an Age of Revolution, 1640-1661. Cambridge, MA and London: Harvard...

  20. A methodology for exploiting the tolerance for imprecision in genetic fuzzy systems and its application to characterization of rotor

    E-Print Network [OSTI]

    Granada, Universidad de

    . This methodology has been applied to predict whether the coating of an helicopter rotor blade is adequate application to characterization of rotor blade leading edge materials Luciano Sa´nchez a , Ine´s Couso b process, that aids to make agile decisions in the absence of a causal model or extensive prototype testing

  1. On the Comparison of Multiple Signature LDA and Neural Network Based Broken Rotor Bar Detection Schemes in Induction Motors

    E-Print Network [OSTI]

    Chow, Mo-Yuen

    Schemes in Induction Motors Bulent Ayhan, Mo-Yuen Chow, Myung-Hyun Song bayhan@unity.ncsu.edu, chow@eos.ncsu.edu, mhsong@sunchon.ac.kr Abstract ­ Broken rotor bars in induction motors can be detected by monitoring any abnormality of the spectrum amplitudes at certain frequencies in the motor current spectrum. Broken rotor bar

  2. A numerical investigation of transonic axial compressor rotor flow using a low-Reynolds-number {kappa}-{epsilon} turbulence model

    SciTech Connect (OSTI)

    Arima, T.; Sonoda, T.; Shirotori, M.; Tamura, A.; Kikuchi, K.

    1999-01-01

    The authors have developed a computer simulation code for three-dimensional viscous flow in turbomachinery based on the time-averaged compressible Navier-Stokes equations and a low-Reynolds-number {kappa}-{epsilon} turbulence model. It is described in detail in this paper. The code is used to compute the flow fields for two types of rotor (a transonic fan NASA Rotor 67 and a transonic axial compressor NASA rotor 37), and numerical results are compared to experimental data based on aerodynamic probe and laser anemometer measurements. In the case of Rotor 67, calculated and experimental results are compared under the design speed to validate the code. The calculated results show good agreement with the experimental data, such as the rotor performance map and the spanwise distribution of total pressure, total temperature, and flow angle downstream of the rotor. In the case of Rotor 37, detailed comparisons between the numerical results and the experimental data are made under the design speed condition to assess the overall quality of the numerical solution. Furthermore, comparisons under the part-speed condition are used to investigate a flow field without passage shock. The results are well predicted qualitatively. However, considerable quantitative discrepancies remain in predicting the flow near the tip. In order to assess the predictive capabilities of the developed code, computed flow structures are presented with the experimental data for each rotor and the cause of the discrepancies is discussed.

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

    E-Print Network [OSTI]

    Velazquez, Martin Tomas

    2009-05-15

    document of 1812, saw the Catholic Church as an obstacle to progress. Their rhetoric contributed to the rise of anticlericalism in Mexico. Liberals accused the church of being the collaborationist ?shadow of Spain,? and of ?[corrupting] man through... upon because it was a reactionary movement that ran counter to the principles of the Mexican Revolution. This is not surprising, given that Mexico was dominated by the Institutional Revolutionary Party (PRI) for many years. Many of these historians...

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

    SciTech Connect (OSTI)

    Corren, Dean; Colby, Jonathan; Adonizio, Mary Ann

    2013-01-29

    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.

  5. Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine

    DOE Patents [OSTI]

    Qu, Ronghai; Lipo, Thomas A.

    2005-08-02

    The present invention provides a novel dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine. The present invention improves electrical machine torque density and efficiency. At least one concentric surface-mounted permanent magnet dual-rotor is located inside and outside of a torus-shaped stator with back-to-back windings, respectively. The machine substantially improves machine efficiency by reducing the end windings and boosts the torque density by at least doubling the air gap and optimizing the machine aspect ratio.

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

    E-Print Network [OSTI]

    , typical of that found on a current generation army helicopter. It has a complex blade form that tends in this chapter is that of a UH-60A rotor in high speed forward flight condition. This case was chosen to test helicopter low speed descent flight. This particular flight condition is dominated by BVI phenomena

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

    E-Print Network [OSTI]

    ;5.1 Details of the Flight Test A flight test of the AH-1G helicopter was performed at NASA Ames Research and Acoustics Test (TAAT) was conducted on an AH-1G Cobra. It used highly instrumented rotor blades collected from a few pressure ports on the blade. Several calculations for this helicopter have been

  8. 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 the control of a wind power plant, possibly consisting of many individual wind turbines. The goal. INTRODUCTION Today, wind power is the most important renewable energy source. For the years to come, many

  9. 3-D Time-Accurate CFD Simulations of Wind Turbine Rotor Flow Fields

    E-Print Network [OSTI]

    -dimensional flow properties of rotating blades are an essential feature of any wind turbine aerodynamic-rotating simulations, some aspects of the physics of wind turbine aerodynamics and noise must be obtained from rotating3-D Time-Accurate CFD Simulations of Wind Turbine Rotor Flow Fields Nilay Sezer-Uzol and Lyle N

  10. Wind Farm Simulations Using a Full Rotor Model for Wind Turbines

    E-Print Network [OSTI]

    Mavripli, Dimitri J.

    Wind Farm Simulations Using a Full Rotor Model for Wind Turbines Jay Sitaraman Dimitri Mavriplis model for the wind turbines. The analysis scheme combines several technologies, viz. unstructured mesh Wind turbine aeromechanics represents a complex problem that spans several disparate spatial

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

    E-Print Network [OSTI]

    Müller, Norbert

    turbines, compressors, pumps, but also electric generators, heat exchangers, internal combustion engines of these wave rotors are presented, results obtained using FLUENT, a Computational Fluid Dynamics (CFD of combustion L = channel length m& = mass flow rate = kinematic viscosity = pressure ratio p = pressure WR

  12. Rotor and Subrotor Dynamics in the Lee of Three-Dimensional Terrain JAMES D. DOYLE

    E-Print Network [OSTI]

    Frierson, Dargan

    circulation, where they dissipate and contribute their vorticity toward the maintenance of the main rotor of their intensity, such subrotor circulations likely pose the greatest hazard to aviation. 1. Introduction and shear, and have been sug- gested to contribute to numerous aviation incidents and accidents (e.g., NTSB

  13. American Institute of Aeronautics and Astronautics An Application of Wave Rotor Technology for Performance

    E-Print Network [OSTI]

    Müller, Norbert

    as a refrigerant in air conditioning in aircrafts and train compartments. The use of air as a refrigerant is based employed. The air refrigeration cycles appear to use more energy than comparable vapor compression cyc rotor implementation can increase efficiency and reduce size and cost of R718 units. The condensing wave

  14. Sudden stoppage of rotor in a thermally driven rotary motor made from double-

    E-Print Network [OSTI]

    Qin, Qinghua

    Sudden stoppage of rotor in a thermally driven rotary motor made from double- walled carbon nanotubes K Cai1 , J Z Yu1 , H Yin1 and Q H Qin2 1 College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, People's Republic of China 2 Research School of Engineering

  15. 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 the dynamical effects from the heat transfer process. The fluid flow in an enclosed disk system with axial with heat transfer along the stator, which corresponds to the experiment of Djaoui et al. [2]. Our results

  16. 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

  17. New membranes could speed the biofuels conversion process and reduce cost

    SciTech Connect (OSTI)

    Hu, Michael

    2014-07-23

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

  18. New membranes could speed the biofuels conversion process and reduce cost

    ScienceCinema (OSTI)

    Hu, Michael

    2014-08-06

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

  19. Power play: Who`s in control of the energy revolution?

    SciTech Connect (OSTI)

    Whorton, J.C.; Whitcomb, P.

    1998-12-31

    Ongoing deregulation of the natural gas and electric power industries is bringing about a convergence of the two enterprises -- an interdependence never before seen. Wise leaders in each industry are taking steps to accelerate this revolution for the benefit of their companies and, ultimately, for the American consumer. In a knowledgeable and entertaining fashion, Whorton, a career petroleum consultant, and Whitcomb, a veteran energy journalist, weave a history of the oil, gas, and electric industries and outline the coming convergence, explaining how the power play will reward those who are alert to its import.

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

    E-Print Network [OSTI]

    Sheng, Yueh

    1971-01-01

    Liu Yun- yao, who has held various important positions in the KMT and who at one time was in charge of personnel work in the National Army; Hsiao Tsan-yu and Wu Chia-yu, who are members of the Legislative Yuan; and Chang Hsiu-lan, a member..., the leaders of the Soviet Union and the Comintern reached the conclusion that truly "the seeds sown by Sun Yat-sen are to blossom and bear fruit." After reaching this conclusion, the Soviet leaders decided to invest more capital in the Chinese revolution...

  1. A study of arbitrary rotations of shells of revolution by the finite element method 

    E-Print Network [OSTI]

    Rosenbaum, James Byron

    1974-01-01

    were reduced to eiskf3, ez3kz~, and the squares and products of the two. This contributed rotation effects to the nonlinear strain energy which previously had not been taken into account. As a computational time saver, the partial derivatives... II-1 III-1 IV-1 Geometry of Shell of Revolution Segment. . Coordinization of Shell Element. . Comparison of SNASOR III with New SNASOR III for a Shallow Shell of X = 6. Page 14 26 31 IV-2 Buckling Analysis of Higher Order Strain Energy...

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

    E-Print Network [OSTI]

    Tillerson, Joe Richard

    1970-01-01

    'h ? Order Rungc ? Kutta Forsn)las Houbolt Metho1I Ch n, Cox, and Benfield Procedure Constant Average Acceleration (8 ? -1/4) Linear Acceleration (B=l/6) Step Function Acceleration Variation (8. =1/8) Fox and Goodwin Formulation (8=1/12) Second... Shell of Revolution Response Studies Runge-Kntta Evaluation 35 43 43 TEHLE 0: COIJTEJITS (Con tinued) C, J. EP'J . R Page isan, Cox, and henfield Evaluation (B. =J. I6, I/O, 1/12, and 0) C mparison of !Inubolt Jiethod an;l Chan, Cox, ; nd...

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

    E-Print Network [OSTI]

    Hope, Brian Lannes

    1974-01-01

    -strengthening" conservative el i te wi thin the Ch'ing government over its more radical reformers re- affirmed the inability of the Chinese political system to undergo a Meiji-style "revolution from above" so long as it was hamstrung by the Ch'ing Dynasty's Manchu court... and the fledgling Chi- nese Communist Party established. 15 References Fairbank, John K. , Reischauer, Edwin 0. , Craig, Albert M. ; East Asia: The Modern Transforma- tion (Boston: Houston Mifflin Co. , 1965 p. 122-23. 2. Ibid. , p. 124. 3. Wright, Mary C...

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

    E-Print Network [OSTI]

    Petersen, Gary Stanley

    1968-01-01

    A COtlPUTER PROCEDURI FOR 1'VALUATING THE I. 'F1"L'CTS OF LOADING T11IN ISOTROPIC SHELLS OF REVOLUTION A Thesis GARY STANLEY PETERSEN Submitted to tne Graduate College oi' the Texas AeM University in partial fulfillment of tne requirements... for the degree of MASTER OF SCIENCE January 19oG MaJor Subject: Computer Science A COiviPUTER PROCLDURE FOR EVALUATING THE EFFECTS OF LOADLNG THIN ISO'IROPIC SHELLS OF RDOLUTION A Thesis by GARY STANLEY PETERSFN Approved as to style and content, by...

  5. The politics of self-help: The Rockefeller Foundation, philanthropy and the 'long' Green Revolution

    E-Print Network [OSTI]

    Nally, David; Taylor, Stephen

    2015-05-05

    to Jake Hodder, Mike Heffernan and Steve Legg for their comments. Steve Legg suggested we make one further addition; namely we made clear the ‘international geography’ of the Green Revolution i.e. it began in the US South before being applied to Mexico... that rural stagnation, if left unaddressed, could lead to the outward migration of cheap labour and ultimately culminate in XUEDQ?UHYROW??µ7KH?QRUWKZDUG?H[RGXV?RI?QHJUR?IDUPHUV?¶?ZURWH J. A. Evans (1925, 7) RI?WKH?86'$¶V?2IILFH...

  6. Revolution Now

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMassR&D100Nationalquestionnaires 0serial codesReversingproved reserves ofReviw

  7. Revolution Now

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data CenterFinancialInvesting inServicesRecovery ActIntegrationReuben

  8. 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.

    2010-07-14

    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 ...

  9. Simplifying and speeding the management of intra-node cache coherence

    DOE Patents [OSTI]

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

    2012-04-17

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

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

    SciTech Connect (OSTI)

    Guan, Xuefei; Zhang, Jingdan; Zhou, S. Kevin; Rasselkorde, El Mahjoub; Abbasi, Waheed A.

    2014-02-18

    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.

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

    DOE Patents [OSTI]

    Meikrantz, David H.

    2006-12-19

    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.

  12. Operator reflection positivity inequalities and their applications to interacting quantum rotors

    E-Print Network [OSTI]

    Jacek Wojtkiewicz; Wies?aw Pusz; Piotr Stachura

    2015-07-11

    In the Reflection Positivity theory and its application to statistical mechanical systems, certain matrix inequalities play a central role. The Dyson-Lieb-Simon and Kennedy-Lieb-Shastry-Schupp inequalities constitute prominent examples. In this paper we extend the KLS-S inequality to the case where matrices are replaced by certain operators. As an application, we prove the occurrence of the long range order in the ground state of two-dimensional quantum rotors.

  13. Rotor whirl forces induced by the tip clearance effect in axial flow compressors

    SciTech Connect (OSTI)

    Ehrich, F. )

    1993-10-01

    It is now widely recognized that destabilizing forces, tending to generate forward rotor whirl, are generated in axial flow turbines as a result of the nonuniform torque induced by the nonuniform tip-clearance in a deflected rotor--the so called Thomas/Alford force. It is also recognized that there will be a similar effect in axial flow compressors, but qualitative considerations cannot definitively establish the magnitude or even the direction of the induced whirling forces--that is, if they will tend to forward or backward whirl. Applying a parallel compressor model to simulate the operation of a compressor rotor deflected radially in its clearance, it is possible to derive a quantitative estimate of the proportionality factor [beta] which relates the Thomas/Alford force in axial flow compressors (i.e., the tangential force generated by a radial deflection of the rotor) to the torque level in the compressor. The analysis makes use of experimental data from the GE Aircraft Engines Low Speed Research Compressor facility comparing the performance of three different axial flow compressors, each with four stages (typical of a mid-block of an aircraft gas turbine compressor) at two different clearances. It is found that the value of [beta] is in the range of +0.27 to [minus]0.71 in the vicinity of the stages' nominal operating line and +0.08 to [minus]1.25 in the vicinity of the stages' operation at peak efficiency. The value of [beta] reaches a level of between [minus]1.16 and [minus]3.36 as the compressor is operated near its stalled condition.

  14. Coherent dynamics in the rotor tip shear layer of utility scale wind turbines

    E-Print Network [OSTI]

    Yang, Xiaolei; Barone, Matthew; Sotiropoulos, Fotis

    2015-01-01

    Recent field experiments conducted in the near-wake (up to 0.5 rotor diameters downwind of the rotor) of a 2.5 MW wind turbine using snow-based super-large-scale particle image velocimetery (SLPIV) (Hong et al., Nature Comm., vol. 5, 2014, no. 4216) were successful in visualizing tip vortex cores as areas devoid of snowflakes. The so-visualized snow voids, however, suggested tip vortex cores of complex shape consisting of circular cores with distinct elongated comet-like tails. We employ large-eddy simulation (LES) to elucidate the structure and dynamics of the complex tip vortices identified experimentally. The LES is shown to reproduce vortex cores in good qualitative agreement with the SLPIV results, essentially capturing all vortex core patterns observed in the field in the tip shear layer. We show that the visualized vortex patterns are the result of energetic coherent dynamics in the rotor tip shear layer driven by interactions between the tip vortices and a second set of counter-rotating spiral vortice...

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

    E-Print Network [OSTI]

    Andrea Tomadin; Riccardo Mannella; Sandro Wimberger

    2005-12-01

    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.

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

    E-Print Network [OSTI]

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

  17. The New Biology of Ageing A Revolution in Ageing: The New Biology of Ageing and its Implications

    E-Print Network [OSTI]

    Gems, David

    The New Biology of Ageing 1 A Revolution in Ageing: The New Biology of Ageing and its Implications? Philosophische und biowissenschaftliche Perspektiven"(Longer Life: Biological, Medical and Philosophical Perspectives). Eds: Sebastian Knell, Marcel Weber. Surhkamp Verlag, 2009. Summary Until recently the biology

  18. Bushing retention system for thermal medium cooling delivery tubes in a gas turbine rotor

    DOE Patents [OSTI]

    Mashey, Thomas Charles (Coxsackie, NY)

    2002-01-01

    Bushings are provided in counterbores for wheels and spacers for supporting thermal medium cooling tubes extending axially adjacent the rim of the gas turbine rotor. The retention system includes a retaining ring disposed in a groove adjacent an end face of the bushing and which retaining ring projects radially inwardly to prevent axial movement of the bushing in one direction. The retention ring has a plurality of circumferentially spaced tabs along its inner diameter whereby the ring is supported by the lands of the tube maintaining its bushing retention function, notwithstanding operation in high centrifugal fields and rotation of the ring in the groove into other circular orientations.

  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.

    2012-01-01

    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. Effects of anisotropy on the performance characteristics of an axially laminated anisotropic-rotor synchronous reluctance motor drive system

    SciTech Connect (OSTI)

    Isaac, F.N.; Arkadan, A.A.; Russell, A.A. [Marquette Univ., Milwaukee, WI (United States)] [Marquette Univ., Milwaukee, WI (United States); El-Antably, A.

    1998-09-01

    In the last few years, increased attention has been paid to the performance characterization and evaluation of the performance of synchronous reluctance machines. Extensive research has concentrated on different rotor structures in order to achieve high performance variable speed drives for applications such as electric vehicles. The effects of accounting for anisotropy on the performance characteristics of Axially Laminated Anisotropic (ALA) rotor Synchronous Reluctance Motor (SynRM) drive systems are studied. These effects are evaluated from the simulations of a computer aided model. The model is based on the use of an iterative approach which indirectly couples a two dimensional (2D) nonlinear finite element (FE) model, which accounts for anisotropy, to a state space model describing the SynRM drive system. The simulation results are also validated by comparison to test data of a prototype ALA rotor SynRM drive system.

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

    E-Print Network [OSTI]

    Moshiri, Farrokh

    1984-01-01

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

  3. The support of the limit distribution of optimal Riesz energy points on sets of revolution in $\\mathbb{R}^{3}$

    E-Print Network [OSTI]

    J. S. Brauchart; D. P. Hardin; E. B. Saff

    2007-08-03

    Let A be a compact set in the right-half plane and $\\Gamma(A)$ the set in $\\mathbb{R}^{3}$ obtained by rotating A about the vertical axis. We investigate the support of the limit distribution of minimal energy point charges on $\\Gamma(A)$ that interact according to the Riesz potential 1/r^{s}, 0distribution coincides with the equilibrium measure on $\\Gamma(A)$ which is supported on the outer boundary of $\\Gamma(A)$. We show that there are sets of revolution $\\Gamma(A)$ such that the support of the equilibrium measure on $\\Gamma(A)$ is {\\bf not} the complete outer boundary, in contrast to the Coulomb case s=1. However, the support of the limit distribution on the set of revolution $\\Gamma(R+A)$ as R goes to infinity, is the full outer boundary for certain sets A, in contrast to the logarithmic case (s=0).

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

    E-Print Network [OSTI]

    Jakub Basista

    2006-01-01

    -CENTURY NEWS Philip S. Gorski. The Disciplinary Revolution: Calvinism and the Rise of the State in Early Modern Europe. Chicago: University of Chicago Press, 2003. xviii + 249 pp. Paper $21.00. Review by JAKUB BASISTA, JAGIELLONIAN UNIVERSITY, KRAK... and is an exception to the general process presented. Re- cently one more analysis of the process of formation of modern European states was proposed by Philip Gorski in his excellent work on the disciplinary revolution and its consequences for the emergence...

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

    E-Print Network [OSTI]

    Furgol, Edward M.

    2013-01-01

    stream_source_info Oaskeshott European Weapons & Armour rev Furgol.pdf.txt stream_content_type text/plain stream_size 7120 Content-Encoding windows-1252 stream_name Oaskeshott European Weapons & Armour rev Furgol.pdf.txt Content... three of many topical arrangements of subject matter. Ewart Oakeshott. European Weapons and Armour From the Renaissance to the Industrial Revolution. Rochester, NY: ?e Boydell Press, 2012. Xviii + 288 pp. + c. illus. $28.45. Review...

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

    Worcester, Thomas

    2011-01-01

    adds to the narrative by suggesting their common reliance on ?thought experiments? as a means of developing a science of cognition. As Balakier explains, while the empirical bent of Traherne?s methods (particularly in the Centuries and the Dobell... and works to expand our understanding of the other side of the British Civil Wars. Francesco Benigno. Mirrors of Revolution: Con?ict and Political Identity in Early Modern Europe. Turnhout: Brepols, 2010. x + 334 pp. ? 70.00. Review...

  8. Rotor dynamic analysis of GCEP (Gas Centrifuge Enrichment Plant) Tails Withdrawal Test Facility AC-12 compressor

    SciTech Connect (OSTI)

    Spencer, J.W.

    1982-01-22

    The reliable operation of the centrifugal compressors utilized in the gaseous diffusion process is of great importance due to the critical function of these machines in product and tails withdrawal, cascade purge and evacuation processes, the purge cascade and product booster applications. The same compressors will be used in equally important applications within the Gas Centrifuge Enrichment Plant (GCEP). In response to concern over the excessive vibration exhibited by the AC-12 compressor in the No. 3 position of the GCEP Tails Withdrawal Test Facility, a rotor-bearing dynamic analysis was performed on the compressor. This analysis included the acquisition and reduction of compressor vibration data, characterization and modeling of the rotorbearing system, a computer dynamic study, and recommendations for machine modification. The compressor dynamic analysis was performed for rotor speeds of 9000 rpm and 7200 to 7800 rpm, which includes all possible opreating speeds of the compressor in the GCEP Test Facility. While the analysis was performed on this particular AC-12 compressor, the results should be pertinent to other AC-12 applications as well. Similar diagnostic and analytical techniques can be used to evaluate operation of other types of centrifugal compressors.

  9. Constructing vacuum spacetimes by generating manifolds of revolution around a curve

    E-Print Network [OSTI]

    Vee-Liem Saw

    2015-06-23

    We develop a general perturbative analysis on vacuum spacetimes which can be constructed by generating manifolds of revolution around a curve, and apply it to the Schwarzschild metric. The following different perturbations are carried out separately: 1) Non-rotating 2-spheres are added along a plane curve slightly deviated from the "Schwarzschild line"; 2) General non-rotating topological 2-spheres are added along the "Schwarzschild line" 3) Slow-rotating 2-spheres are added along the "Schwarzschild line". For (1), we obtain the first order vacuum solution and show that no higher order solution exists. This linearised vacuum solution turns out however to be just a gauge transformation of the Schwarzschild metric. For (2), we solve the general linearised vacuum equations under several special cases. In particular, there exist linearised vacuum solutions with signature-changing metrics (though these do not correspond to adding topological 2-spheres). For (3), we find that the first order vacuum solution is equivalent to the slowly rotating Kerr metric. This is hence a much simpler and geometrically insightful derivation as compared to the gravitomagnetic one, where this rotating-shells construction is a direct manifestation of the frame-dragging phenomenon. We also show that the full Kerr however, cannot be obtained via adding rotating ellipsoids.

  10. Modern day gas turbine designers face the problem of hot mainstream gas ingestion into rotor-stator disk cavities. To counter this ingestion, seals are installed on the rotor and stator disk rims and

    E-Print Network [OSTI]

    Modern day gas turbine designers face the problem of hot mainstream gas ingestion into rotor the supply of purge air as this decreases the net power output as well as efficiency of the gas turbine Velocimetry (PIV). Experiments were carried out in a model single-stage axial flow turbine set

  11. Sub-Fourier Characteristics of a -kicked-rotor Resonance I. Talukdar, R. Shrestha, and G. S. Summy

    E-Print Network [OSTI]

    Summy, Gil

    Sub-Fourier Characteristics of a -kicked-rotor Resonance I. Talukdar, R. Shrestha, and G. S. Summy; revised manuscript received 25 May 2010; published 28 July 2010) We experimentally investigate the sub-Fourier depends on 1=N3 , a property which we also verify experimentally. Such a sub-Fourier effect could

  12. 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. The current-voltage relationship of F0 was linear from 7 to 70 mV. The current was extremely proton

  13. 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)

    2008-03-18

    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.

  14. 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

    2014-06-24

    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.

  15. F-ATPase: Forced Full Rotation of the Rotor Despite Covalent Cross-link with the Stator*

    E-Print Network [OSTI]

    Junge, Wolfgang

    ( A285C 7 P280C). Apparently the high torque of this rotary engine un- coiled the -helix and forced at the rotary compliance of subunit we introduced disulfide bridges between (rotor) and or (stator). We engineered cysteine residues into positions located roughly at the "top," "center," and "bottom" parts

  16. The Torque of Rotary F-ATPase Can Unfold Subunit Gamma If Rotor and Stator Are Cross-Linked

    E-Print Network [OSTI]

    Junge, Wolfgang

    cross-linked (via an engineered disulfide bridge) with the bearing, the rotary function of F1 persists an artificial disulfide bridge did not impair the rotary ATPase activity. We newly engineered three mutantsThe Torque of Rotary F-ATPase Can Unfold Subunit Gamma If Rotor and Stator Are Cross-Linked Florian

  17. {alpha} decay and shape coexistence in the {alpha}-rotor model

    SciTech Connect (OSTI)

    Richards, J.D.; Bingham, C.R.; Nazarewicz, W.; Wauters, J.; Berggren, T.; Berggren, T.; Bingham, C.R.; Nazarewicz, W.; Nazarewicz, W.

    1997-09-01

    The particle-plus-rotor model was employed to study the fine structure seen in the {alpha} decay of even-even neutron-deficient nuclei in the Hg-Po region. The configuration mixing resulting from the shape coexistence between well-deformed prolate bands and spherical (or quasirotational oblate) structures in the daughter nuclei was considered. Experimental {alpha}-decay branching ratios are reproduced within one order of magnitude, except for the case of {sup 180}Hg, where the daughter nucleus {sup 176}Pt is expected to be triaxial in its ground state. The effect of configuration mixing on the relative intensities is discussed in detail, together with the sensitivity of results to the choice of the {alpha}-nucleus optical model parameters. {copyright} {ital 1997} {ital The American Physical Society}

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

    SciTech Connect (OSTI)

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

    2012-01-01

    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.

  19. 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

    2009-05-15

    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 ...

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

    SciTech Connect (OSTI)

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

    2014-11-20

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

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

    SciTech Connect (OSTI)

    Deola, Regina Anne

    2010-02-01

    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.

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

    E-Print Network [OSTI]

    Mikel, Tilden Newton

    1982-01-01

    Projectiles on Helicopter Composite Material Rotor Blades. (December 1982) Tilden Newton Nikel, B. S. , Texas AAM University; N . S . , Texas A&N University Chairman of Advisory Committee: Dr. Clarence L. Hough Jr. A number of damage models have been.... The funding for the ballistic tests conducted during this research was provided 'by Bell Helicopter Textron, Inc. , Fort cnorth, Texs s, TABLE OF CONTENTS Page ABSTRACT. . . . . ~ ~ ~ ~ ~ ~ ~ ~ ACKNOWLEDGMENT TABLE OF CONTENTS LIST OF TABLES. LIST...

  3. A review of "John Goodwin and the Puritan Revolution: Religion and Intellectual Change in Seventeenth-Century England" by John Coffey 

    E-Print Network [OSTI]

    Prior, Charles W. A.

    2007-01-01

    and the Puritan Revolution: Religion and Intellectual Change in Seventeenth-Century England. Woodbridge, Suffolk: The Boydell Press, 2006. 352 pp. + 4 illus. $105. Review by CHARLES W. A. PRIOR, UNIVERSITY OF HULL. This is John Coffey?s second detailed... of a sub- stantial array of sources and complex currents of thought on the intersection of politics and religion. This was followed by a survey of debates on perse- cution and toleration from the age of Elizabeth to the revolution of 1688. Coffey has...

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

    E-Print Network [OSTI]

    Schwarz, Marc

    2014-01-01

    stream_source_info Review of %22The Nature of English Revolution Revisited Essas in Honour of John Morrill%22 eds Taylor and Tapsell reviewer Schwarz.pdf.txt stream_content_type text/plain stream_size 7020 Content-Encoding UTF-8... stream_name Review of %22The Nature of English Revolution Revisited Essas in Honour of John Morrill%22 eds Taylor and Tapsell reviewer Schwarz.pdf.txt Content-Type text/plain; charset=UTF-8 reviews 59 demonstrate how, after the Civil Wars...

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

    SciTech Connect (OSTI)

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

    2013-07-01

    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.

  6. 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.

    1989-11-01

    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.

  7. This document contains the draft version of the following paper: A. Ananthanarayanan, C. Thamire, and S.K. Gupta. Investigation of revolute joint

    E-Print Network [OSTI]

    Gupta, Satyandra K.

    , and S.K. Gupta. Investigation of revolute joint clearances created by in-mold assembly process. IEEE the mold using an in-mold assembly process. This process eliminates the need for post-molding assembly joint depends on the clearance in the joint. The clearance in turn depends on the part shrinkage

  8. A review of "The Huguenot Soldiers of William of Orange and the Glorious Revolution of 1688: The Lions of Judah." by Matthew Glozier 

    E-Print Network [OSTI]

    Edward M. Furgol

    2003-01-01

    and the Glorious Revolution of 1688: The Lions of Judah. Brighton: Sussex Academic Press, 2002. xi + 228 pp. + 4 illus. $69.95. Review by EDWARD M. FURGOL, NAVY MUSEUM, WASHINGTON NAVY YARD, D.C. As an early modern military historian the title of the book...

  9. Curvature induced potential on the surface of revolution and energy shift on the surface of truncated cone

    E-Print Network [OSTI]

    Long Du; Yong-Long Wang; Guang-Zhen Kang; Xiao-Jun Liu; Hong-Shi Zong

    2014-11-26

    We derive the curvature induced quantum-mechanical potential of a neutral spinless particle constrained to move on a surface of revolution. Using the thin-layer quantization scheme, we decompose the tangent component of the Schr\\"odinger equation from the transverse component. The tangent Schr\\"odinger equation is separated into angular and axial direction in cylindrical coordinate. The exactly solvable model with the shape of truncated cone is investigated and its geometrical induced states are given analytically. With hard wall boundary condition, we find that energy levels and energy differences decrease monotonically with raising the height and generatrix slope of the geometry. Moreover, particles possessing higher kinetic energy tends to occupy the place with greater curvature. These results do good favor to concerned nano-structure experiment.

  10. 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)

    2000-01-01

    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.

  11. Intramolecular vibrational energy redistribution from a high frequency mode in the presence of an internal rotor: Classical thick-layer diffusion and quantum localization

    E-Print Network [OSTI]

    Paranjothy Manikandan; Srihari Keshavamurthy

    2007-07-31

    We study the effect of an internal rotor on the classical and quantum intramolecular vibrational energy redistribution (IVR) dynamics of a model system with three degrees of freedom. The system is based on a Hamiltonian proposed by Martens and Reinhardt (J. Chem. Phys. {\\bf 93}, 5621 (1990).) to study IVR in the excited electronic state of para-fluorotoluene. We explicitly construct the state space and show, confirming the mechanism proposed by Martens and Reinhardt, that an excited high frequency mode relaxes via diffusion along a thick layer of chaos created by the low frequency-rotor interactions. However, the corresponding quantum dynamics exhibits no appreciable relaxation of the high frequency mode. We attribute the quantum suppression of the classical thick-layer diffusion to the rotor selection rules and, possibly, dynamical localization effects.

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

    SciTech Connect (OSTI)

    McKeever, John W

    2007-08-01

    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.

  13. The Flying Pi Eye is an autonomous, flying drone with four rotors that lift a Raspberry Pi, GPS, and camera. The drone is

    E-Print Network [OSTI]

    Gray, Jeffrey G.

    The Flying Pi Eye is an autonomous, flying drone with four rotors that lift a Raspberry Pi, GPS a user connects the on board Raspberry Pi through ethernet to a network, sets the search area and color to battery limitations. · The Raspberry Pi is small, inexpensive, and doesn't use much power, but it also

  14. Indirect sensing for rotor flux position of permanent magnet AC motors operating over a wide speed range

    SciTech Connect (OSTI)

    Moreira, J.C.

    1996-11-01

    This paper describes an indirect sensing, or sensorless, method for rotor flux position for brushless permanent magnet (BPM) motors operating over a wide speed range, while keeping maximum torque per ampere and/or maximum efficiency capabilities. The method described is particularly applicable to trapezoidal back emf type of BPM motors. The typical trapezoidal waveform of the motor internal voltages (or back emf) contains a fundamental and higher order frequency harmonics. In particular, the third harmonic component is extracted from the stator phase voltages while the fundamental and other polyphase components are eliminated via a simple summation of the three phase voltages. The resulting third harmonic signal keeps a constant phase relationship with the rotor flux for any motor speed and load condition, and is practically free of noise that can be introduced by the inverter switching, making this a robust sensing method. In contrast with indirect sensing methods based on detection of the back-emf signal that require heavy filtering, the third harmonic signal needs only a small amount of filtering to eliminate the switching frequency and its side bands. As a result, the method described here is not sensitive to filtering delays, allowing the motor to achieve a good performance over a wide speed range. Motor starting is also superior with this method since the third harmonic signal can be detected and processed at lower speeds than for the conventional method of back-emf sensing. Moreover, an alternative way to acquire the third harmonic signal without the need to access the stator neutral terminal is discussed. This is particularly interesting with the motor neutral connection is not available or expensive to have access. The third harmonic indirect sensing scheme is implemented in the laboratory and compared to a conventional back-emf sensing method.

  15. 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

    2014-10-28

    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.

  16. The Ethiopian Revolution

    E-Print Network [OSTI]

    Ayele, Negussay

    1983-01-01

    and Molyneux, p. 250. Feudalism in Ethiopia was boththe peasants who chafed under feudalism in both parts of theEthiopian masses: feudalism, imperialism and bureaucratic

  17. The Second Superstring Revolution

    E-Print Network [OSTI]

    John H. Schwarz

    1996-07-08

    Recent developments in superstring theory have led to major advances in understanding. After reviewing where things stood earlier, we sketch the impact of recently identified dualities and D-branes, as well as a hidden eleventh dimension.

  18. Sandia Energy - Semiconductor Revolution

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid youOxygenLaboratory Fellows JerryPredictive4:Safety,

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

    SciTech Connect (OSTI)

    Shen, Chen

    2014-01-20

    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.

  20. Hydrodynamic Effects on Modeling and Control of a High Temperature Active Magnetic Bearing Pump with a Canned Rotor

    SciTech Connect (OSTI)

    Melin, Alexander M; Kisner, Roger A; Fugate, David L; Holcomb, David Eugene

    2015-01-01

    Embedding instrumentation and control Embedding instrumentation and control (I\\&C) at the component level in nuclear power plants can improve component performance, lifetime, and resilience by optimizing operation, reducing the constraints on physical design, and providing on-board prognostics and diagnostics. However, the extreme environments that many nuclear power plant components operate in makes embedding instrumentation and control at the component level difficult. Successfully utilizing embedded I\\&C requires developing a deep understanding of the system's dynamics and using that knowledge to overcome material and physical limitations imposed by the environment. In this paper, we will develop a coupled dynamic model of a high temperature (700 $^\\circ$C) canned rotor pump that incorporates rotordynamics, hydrodynamics, and active magnetic bearing dynamics. Then we will compare two control design methods, one that uses a simplified decoupled model of the system and another that utilizes the full coupled system model. It will be seen that utilizing all the available knowledge of the system dynamics in the controller design yield an order of magnitude improvement in the magnitude of the magnetic bearing response to disturbances at the same level of control effort, a large reduction in the settling time of the system, and a smoother control action.

  1. 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)

    2011-12-15

    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}.

  2. This document contains the draft version of the following paper: A. Ananthanarayanan, L. Ehrlich, J.P. Desai, and S.K. Gupta. Design of revolute joints for in-

    E-Print Network [OSTI]

    Gupta, Satyandra K.

    .P. Desai, and S.K. Gupta. Design of revolute joints for in- mold assembly using insert molding. ASME Joints for In-Mold Assembly using Insert Molding Arvind Ananthanarayanan Biomimetics Robotics Lab number of small parts. This is a very chal- lenging task and increases cost of mechanical assemblies. In

  3. 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.

    2011-11-15

    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.

  4. 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

    2011-10-21

    ............................................ 67 20 Disk at Overhang Location RClL= 100, RClR=125 .................................... 71 21 Disk at Overhang Location RClL= 125, RClR=100 .................................... 76 FIGURE... ,sL sLK c ,sR sRK c sX? sl sXLr sXRr scxr 13 2.1.2 Stator Equations of Motion Using a similar approach, the stator equations of motion will be derived. Figure 3(b) illustrates the rotor and stator models, together...

  5. Superconductor rotor cooling system

    DOE Patents [OSTI]

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

    2004-11-02

    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.

  6. 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)

    2002-01-01

    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.

  7. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II)Geothermal EnergyRenewable Energy IntegrationRisk andDesign Tools

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

    SciTech Connect (OSTI)

    Curlee, T R

    1983-01-01

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

  9. Societal, Economic, Ethical and Legal Challenges of the Digital Revolution: From Big Data to Deep Learning, Artificial Intelligence, and Manipulative Technologies

    E-Print Network [OSTI]

    Helbing, Dirk

    2015-01-01

    In the wake of the on-going digital revolution, we will see a dramatic transformation of our economy and most of our societal institutions. While the benefits of this transformation can be massive, there are also tremendous risks to our society. After the automation of many production processes and the creation of self-driving vehicles, the automation of society is next. This is moving us to a tipping point and to a crossroads: we must decide between a society in which the actions are determined in a top-down way and then implemented by coercion or manipulative technologies (such as personalized ads and nudging) or a society, in which decisions are taken in a free and participatory way and mutually coordinated. Modern information and communication systems (ICT) enable both, but the latter has economic and strategic benefits. The fundaments of human dignity, autonomous decision-making, and democracies are shaking, but I believe that they need to be vigorously defended, as they are not only core principles of l...

  10. The Digital Revolution in Measurements

    SciTech Connect (OSTI)

    Kirkham, Harold

    2013-02-27

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

  11. Open science: revolution or continuity?

    E-Print Network [OSTI]

    Delfanti, Alessandro; Pitrelli, Nico

    2015-01-01

    new era of networked science. Princeton University Press,Friesike, S "Putting open science into practice: A socialTyfield, D “Transition to science 2.0: ‘Remoralizing’ the

  12. The GIS Revolution in Transportation

    E-Print Network [OSTI]

    Harrison, Glen

    2006-11-15

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

  13. The Revolution Yet to Happen

    E-Print Network [OSTI]

    C. Gordon Bell; Jim Gray

    1998-09-02

    All information about physical objects including humans, buildings, processes, and organizations will be online. This trend is both desirable and inevitable. Cyberspace will provide the basis for wonderful new ways to inform, entertain, and educate people. The information and the corresponding systems will streamline commerce, but will also provide new levels of personal service, health care, and automation. The most significant benefit will be a breakthrough in our ability to remotely communicate with one another using all our senses. The ACM and the transistor were born in 1947. At that time the stored program computer was a revolutionary idea and the transistor was just a curiosity. Both ideas evolved rapidly. By the mid 1960s integrated circuits appeared -- allowing mass fabrication of transistors on silicon substrates. This allowed low-cost mass-produced computers. These technologies enabled extraordinary increases in processing speed and memory coupled with extraordinary price declines. The only form of processing and memory more easily, cheaply, and rapidly fabricated is the human brain. Peter Cohrane (1996) estimates the brain to have a processing power of around 1000 million-million operations per second, (one Petaops) and a memory of 10 Terabytes. If current trends continue, computers could have these capabilities by 2047. Such computers could be 'on body' personal assistants able to recall everything one reads, hears, and sees.

  14. Revolution Now | Department of Energy

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

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  15. Revolution Now | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data Center HomeVehicle Replacement U.S.Job&EnergyProjectFeeds RSS

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

    SciTech Connect (OSTI)

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

    2004-06-01

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

  17. 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.; Kusnick, Joshua F.; Barrett, Natalie C.; Adams, Douglas E.; Griffith, Daniel Todd

    2013-04-01

    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.

  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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II)Geothermal EnergyRenewable Energy IntegrationRisk and SafetyAerodynamic

  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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II)Geothermal EnergyRenewable Energy IntegrationRisk andDesign Tools Home

  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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II)Geothermal EnergyRenewable Energy IntegrationRiskProgramSF-BREEZESMART

  1. Family Law and the Genomic Revolution

    E-Print Network [OSTI]

    Torrance, Andrew W.

    2010-01-01

    , personalized genomics, and gene therapy, coupled with the flux in the law of gene patents (and patents on related inventions), will ensure the substantial transformation of the legal milieu in which parents make reproductive choices. Family law...

  2. Party Politics and Revolution: Stabilization and Insurrection 

    E-Print Network [OSTI]

    Halbert, Cameron Milton

    2014-09-24

    SLA 1 0 1 Argentina 1974-1977 PRT/ERP 0 1 1 Bolivia 1967 ELN 0 1 1 Cameroon 1961 UPC 0 1 1 Myanmar 1948-1988 CPB 0 1 1 Nepal 1960-1962 NC 0 1 1 Pakistan 1990, 1995-1996 MQM 0 1 1 Peru 1963-1965 MIR 0 1 1 Cambodia 1967-1969 KR 0 0 0 Central... support from the US and Argentina and was able to turn around from certain defeat to certain victory. This leads me to the point that external states may tend to sympathize with one side or the other, leading to different strategies for the insurrection...

  3. Pathways to Sustainability: Evolution or Revolution?

    E-Print Network [OSTI]

    Ashford, Nicholas

    2005-01-01

    The purposes of this chapter is to delve more deeply into the processes and determinants of technological, organisational, and social innovation and to discuss their implications for selecting instruments and policies to ...

  4. Retail wheeling: Is this revolution necessary?

    SciTech Connect (OSTI)

    Cudahy, R.D.

    1994-12-31

    As of a former state regulator and a once enthusiastic practitioner of public utility law, I find it fascinating to see the latest nostrum to burst on the electric utility scene: retail wheeling. Wheeling became a personal interest in the Texas interconnection fight of the late seventies and may have led to the interconnection and wheeling provision of the Public Utilities Regulatory Policies Act (PURPA). Retail wheeling contemplates that every electric power customer should be given an opportunity to seek out the lowest cost source of power wherever it can be found. As a practical matter, the drums for retail wheeling are presently being beaten by large industrial users, who believe that they have the capability to find low cost sources and to make advantageous commercial arrangements to acquire electricity. Large industrials have long been fighting the utilities for cheaper electricity, frequently using the threat of self-generation and cogeneration.

  5. The Keynesian Revolution: A Research School Analysis

    E-Print Network [OSTI]

    Cord, Robert Anthony

    2009-01-01

    .s relations with the Cambridge "Circus.. However, no systematic effort has been made to bring together these and other factors under one recognised framework of analysis. This thesis attempts to fill this gap by making use of a well-established tradition...

  6. Quantum Revolution Act 1 -Scene 1

    E-Print Network [OSTI]

    Satija, Indu

    story buildings ­ flying airplanes ­ lighted rooms ­ and how proud we feel about our scientific have supersonic jets ­ we have radars­ we even have radars in our car so we can avoid a chasing police

  7. The Coming Revolutions in Particle Physics

    ScienceCinema (OSTI)

    Quigg, Chris

    2009-09-01

    Wonderful opportunities await particle physics over the next decade, with new instruments and experiments poised to explore the frontiers of high energy, infinitesimal distances, and exquisite rarity. We look forward to the Large Hadron Collider at CERN to explore the 1-TeV scale (extending efforts at LEP and the Tevatron to unravel the nature of electroweak symmetry breaking) and many initiatives to develop our understanding of the problem of identity: what makes a neutrino a neutrino and a top quark a top quark. We suspect that the detection of proton decay is only a few orders of magnitude away in sensitivity. Astronomical observations should help to tell us what kinds of matter and energy make up the universe. We might even learn to read experiment for clues about the dimensionality of spacetime. If we are inventive enough, we may be able to follow this rich menu with the physics opportunities offered by a linear electron-positron collider and a (muon storage ring) neutrino factory. I expect a remarkable flowering of experimental particle physics, and of theoretical physics that engages with experiment.

  8. Revolutions in energy through modeling and simulation

    SciTech Connect (OSTI)

    Tatro, M.; Woodard, J.

    1998-08-01

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

  9. The Manycore Revolution and Parallel Software

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

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  10. Wind Revolutions LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OFAMERICA'SHeavyAgencyTendo New EnergyWindState GridWindLtd Jump to:

  11. Quiet Revolution Ltd | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report Url JumpTechnology JumpPruebaQuicksilver Geothermal

  12. New Years Revolutions | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested Parties -DepartmentAvailable for PublicDepartmentTindall HomesNewNew Years

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

    E-Print Network [OSTI]

    Suryanarayanan, Arun

    2010-07-14

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

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

    E-Print Network [OSTI]

    Baker, Jose Enrique

    2009-05-15

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

  15. The influence of internal friction on rotordynamic instability 

    E-Print Network [OSTI]

    Srinivasan, Anand

    2004-09-30

    Internal friction has been known to be a cause of whirl instability in built-up rotors since the early 1900's. This internal damping tends to make the rotor whirl at shaft speeds greater than a critical speed, the whirl speed usually being equal...

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

    E-Print Network [OSTI]

    Abernethy, Olivia

    2008-08-19

    . As the metal, is hot, it is not, given to love. It burns the thing inside it. And that thing screams. 24 The transformation seen in this excerpt of the poem hints at the subtle yet distinctive tinge of reproach Jones feels as an African American...

  17. 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)

    2008-04-01

    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.

  18. Rotor assembly including superconducting magnetic coil

    DOE Patents [OSTI]

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

    2003-01-01

    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.

  19. Optimum rotationally symmetric shells for flywheel rotors

    DOE Patents [OSTI]

    Blake, Henry W. (Oak Ridge, TN)

    2000-01-01

    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.

  20. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II)Geothermal EnergyRenewable Energy IntegrationRisk and

  1. Speeding the transition: Designing a fuel-cell hypercar

    SciTech Connect (OSTI)

    Williams, B.D.; Moore, T.C.; Lovins, A.B.

    1997-12-31

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

  2. Analysis of electrical signatures in synchronous generators characterized by bearing faults 

    E-Print Network [OSTI]

    Choi, Jae-Won

    2009-05-15

    mechanical load and speed variations in the driven systems or electric machine itself and convert them via back-emf into stator signal variations. The stator signals are collected in a non- intrusive manner and then processed to detect and diagnose mechanical...) around the rotor poles. Due to the MMF, the field magnetic flux crosses the air gap and enters the armature winding. When the rotor rotates at synchronous speed, the flux linkage with the stator winding induces the electromotive force (EMF...

  3. The Nuclear Revolution, Relative Gains, and International Nuclear Assistance

    E-Print Network [OSTI]

    Kroenig, Matthew

    2006-01-01

    ambitions: The spread of nuclear weapons 1989-1990. Boulder:Determinants of nuclear weapons proliferation. UnpublishedWhy nations forgo nuclear weapons. Montreal: McGill-Queen’s

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

    E-Print Network [OSTI]

    Cudd, Ann E.

    2007-01-01

    the “smart growth” Progresive Lawrence party. Kansas is rightfully the butt of many jokes these days, from liberals like Bil Maher and Jay Leno. It is home to the meanest Christian in the world, Fred Phelps, the minister who pickets the funerals of AIDS... forward again when trust is restored. I cal this the bridge strategy because it is an atempt to build a bridge to the fundamentalist students that they can cross to the feminist side of the chasm. Even if this bridge can be succesfully built, it wil alow...

  5. The Nuclear Revolution, Relative Gains, and International Nuclear Assistance

    E-Print Network [OSTI]

    Kroenig, Matthew

    2006-01-01

    of selective nuclear proliferation. Journal of Conflictmissile and nuclear proliferation: Issues for Congress. CRSSpector, L. 1988. Nuclear proliferation today. Cambridge,

  6. Humanism and the Scientific Revolution: Bacon's Rejection of Aristotle

    E-Print Network [OSTI]

    Varvis, Stephen

    1983-01-01

    The Relation of Francis Bacon, Lord Verulam with theof acquiring knowledge became Bacon's calling and dream.also attempted to put Bacon's early life and the influences

  7. An improved shell of revolution element utilizing cubic displacement functions 

    E-Print Network [OSTI]

    Mebane, Paul Mitchell

    1970-01-01

    GZ Gt /12 ideni';y matrix; monent of inertia harmonic number number of P harmonics = stiffness matrix for an element constant factor ", or each harmonic stiffness matrix for an l. ment in shell coordinates meridional length of shell el ment... cannot be achi eved. 7 Fxclusion of a constant strain state may he due to the dis- placement function not being "complete". A compl te function may be thought of as an nt!i order polynomial . Functio, v!hich in- cludes all terms of the ord r n...

  8. Lin Yutang and the revolution of modern Chinese humor 

    E-Print Network [OSTI]

    Sample, Joseph Clayton

    1993-01-01

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

  9. Crushing national debts, economic revolutions, and extraordinary popular delusions

    E-Print Network [OSTI]

    Odlyzko, Andrew M.

    that there was a long period in Western Europe of accelerating economic growth and of improved technology, going back Boom" started. The pace of economic growth accelerated significantly. Further- more, as is visible smooth growth. This helped convince the public that continuing growth was possible

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

    Energy Savers [EERE]

    Now highlighting four transformational technologies that are here today: onshore wind power, polysilicon photovoltaic (PV) modules, light-emitting diodes (LEDs), and...

  11. Contesting The Blue Revolution: A Political Ecology Of Salmon Aquaculture 

    E-Print Network [OSTI]

    Evans, Steve

    2014-11-01

    global narratives of capitalist development, contested knowledge and neoliberal environmental governance. This presents a unique point of analysis for the discipline of critical geography in moving beyond the strictly ‘environmental’ dimensions...

  12. Flirty Fishing – Gender Ethics and the Jesus Revolution

    E-Print Network [OSTI]

    Johnson, Julianne

    2014-01-01

    1971. Raine, Susan. " Flirty Fishing in the Children of God:PhD student Flirty Fishing – Gender Ethics and the Jesusthe movement known as “flirty fishing. ” Who Were the Jesus

  13. Santeri Nuorteva and the Embassy of the International Revolution

    E-Print Network [OSTI]

    Kellner, Joseph

    2013-01-01

    the Empire’s borderlands, in Finland and Latvia, the Pale ofcircles both in Tsarist Finland and the United States. 15bourgeois vocations in Finland (journalist, language

  14. The Arab Revolution Takes Back the Public Space

    E-Print Network [OSTI]

    Rabbat, Nasser

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

  15. Tennessee Technological University 1 A Revolution That Will Transform How

    E-Print Network [OSTI]

    Qiu, Robert Caiming

    Technological University 9 #12;Correlation Walmart example Database of past transactions What item each As storms approached, Walmart stocked boxes of Pop-Tarts at the front of stores Tennessee Technological

  16. The Nuclear Revolution, Relative Gains, and International Nuclear Assistance

    E-Print Network [OSTI]

    Kroenig, Matthew

    2006-01-01

    it would transfer nuclear technology. Washington Post. 26preferences: the export of sensitive nuclear technology.export of sensitive nuclear technology presents a kind of

  17. System-on-a-chip and the Coming Design Revolution

    E-Print Network [OSTI]

    Programming, November 1998 #12;Written in stone-age languages "Which of the following programming languages

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

    E-Print Network [OSTI]

    Liskov, Barbara

    and, in some cases, reinvent the traditional DBMS architecture. In the space of data warehousing. Will this trend hold or will history repeat itself? ACKNOWLEDGMENT We would like to thank the ICDE 2010 GeneralDB: An Architectural Hybrid of MapReduce and DBMS Technologies for Analytical Workloads," in Proc. PVLDB'09, 2009. [3

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

    E-Print Network [OSTI]

    Madden, Samuel R.

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

  20. A Clean Energy Revolution -- Now | Department of Energy

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

    is calculated using the most recently available state by state residential electricity prices. The state gasoline price above is either the statewide average retail price or a...

  1. The Revolution Revised: A Guided Tour of Davis v. Washington

    E-Print Network [OSTI]

    Graham, Kenneth

    2006-01-01

    for Petitoner, Davis v. Washington, No. 05-5524, Dec. 22,WL 3597706, p. 15. Davis v. Washington, No. 05-5224, Oralfor Respondent, Davis v. Washington, No. 05-5524, Feb. 2,

  2. Filtering revolution: Reporting bias in international newspaper coverage of the

    E-Print Network [OSTI]

    Wolfe, Patrick J.

    , 2008) ­ is a persistent challenge for partici- pants and observers of conflict. To political actors of Political Science, University of Michigan Abstract Reporting bias ­ the media's tendency to systematically the political context in which they are based. Where government pressure on the media is limited ­ in democratic

  3. The Currency of Revolution in Southern Nigeria: 1880-1948

    E-Print Network [OSTI]

    Ibekwe Ofonagoro, Walter

    2012-01-01

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

  4. The Nuclear Revolution, Relative Gains, and International Nuclear Assistance

    E-Print Network [OSTI]

    Kroenig, Matthew

    2006-01-01

    Without the bomb: The politics of nuclear nonproliferation.impact of nuclear weapons on international politics. Statesnuclear/missile ties and balance of power politics. The

  5. The Nuclear Revolution, Relative Gains, and International Nuclear Assistance

    E-Print Network [OSTI]

    Kroenig, Matthew

    2006-01-01

    1982. Yugoslavia. In Nuclear power in developing countries,Potter, W.C. 1982. Nuclear power and nonproliferation: AnNorth Korea is coded as nuclear power beginning in 1993.

  6. Biological Computation as the Revolution of Complex Engineered Systems

    E-Print Network [OSTI]

    Gómez-Cruz, Nelson Alfonso

    2011-01-01

    Provided that there is no theoretical frame for complex engineered systems (CES) as yet, this paper claims that bio-inspired engineering can help provide such a frame. Within CES bio-inspired systems play a key role. The disclosure from bio-inspired systems and biological computation has not been sufficiently worked out, however. Biological computation is to be taken as the processing of information by living systems that is carried out in polynomial time, i.e., efficiently; such processing however is grasped by current science and research as an intractable problem (for instance, the protein folding problem). A remark is needed here: P versus NP problems should be well defined and delimited but biological computation problems are not. The shift from conventional engineering to bio-inspired engineering needs bring the subject (or problem) of computability to a new level. Within the frame of computation, so far, the prevailing paradigm is still the Turing-Church thesis. In other words, conventional engineering...

  7. NANOFLUIDICS REVOLUTION: PROTECTING THE WORLD ONE DROP AT A TIME

    Office of Scientific and Technical Information (OSTI)

    It also laid the groundwork for developing ultra-sensitive sensors using in structural health monitoring system for in situ, noninterrupted detection of the leaching and migration...

  8. The Nuclear Revolution, Relative Gains, and International Nuclear Assistance

    E-Print Network [OSTI]

    Kroenig, Matthew

    2006-01-01

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

  9. The Currency of Revolution in Southern Nigeria: 1880-1948

    E-Print Network [OSTI]

    Ibekwe Ofonagoro, Walter

    2012-01-01

    currency finally gained local acceptance -- and this was aIn Morin and Nupe, the local acceptance of these coins laterlightness would enhance local acceptance of such a coin, it

  10. The Nuclear Revolution, Relative Gains, and International Nuclear Assistance

    E-Print Network [OSTI]

    Kroenig, Matthew

    2006-01-01

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

  11. The Currency of Revolution in Southern Nigeria: 1880-1948

    E-Print Network [OSTI]

    Ibekwe Ofonagoro, Walter

    2012-01-01

    nickel-bronze one-tenths of a penny, consisting of 25% purethat the tenth of a penny was "destined to discredit themuch less than the tenth of a penny. 101 Clearly, it was

  12. Amilcar Cabral: Theory of Revolution and Background to His Assassination

    E-Print Network [OSTI]

    Ferreira, Eduardo de Sousa

    1973-01-01

    liberation The death of Amilcar Cabral means the death of acountries and imperialism. For Cabral the fight for nationalin the country itself. Cabral's first efforts towards

  13. The Nuclear Revolution, Relative Gains, and International Nuclear Assistance

    E-Print Network [OSTI]

    Kroenig, Matthew

    2006-01-01

    a domestic plutonium reprocessing or uranium enrichmentexample, France’s first reprocessing facility went online incontinually operated reprocessing facilities to the present

  14. The Nuclear Revolution, Relative Gains, and International Nuclear Assistance

    E-Print Network [OSTI]

    Kroenig, Matthew

    2006-01-01

    T. 1993. The Nuclear Suppliers Group. Nonproliferationeds. 1985. The nuclear suppliers and nonproliferation:of the emerging nuclear suppliers. Lexington, MA: Lexington

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAandSummary From: v2.7|Energyand Performance AssuranceEnergy-

  16. MHK ISDB/Sensors/True North Revolution | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas:Montezuma,Information MHKMHK ISDB/Sensors/Smart BarometricMHKMHKMHK

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo.Hydrogen4 » Searchwith Firstat theDepartment ofChief ofSensible

  18. Is The Distributed Generation Revolution Coming: A Federal Perspective

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICE INDUSTRIALU.S. Department of(Presentation)Irving Pressley McPhail About

  19. Is The Distributed Generation Revolution Coming: A Federal Perspective

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICE INDUSTRIALU.S. Department of(Presentation)Irving Pressley McPhailSan Diego,

  20. Is The Distributed Generation Revolution Coming: A Federal Perspective

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested Parties - WAPA Public CommentInverted Attic Bulkheadat Larger| DepartmentMeyer

  1. Fuel Cell Startup Could Spark A Revolution | GE Global Research

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation Current HABFES OctoberEvanServicesAmesFourFromFuel Cell Handbook (SeventhFuel

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann JacksonDepartment ofOffice|inWestMay 13, 2015 TheTechnologies-2015 Update | Department

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram: Report AppendicesA Token Requesting AQuestions |InitiativesReviews

  4. COP 21: The Revolution Will Be Catalyzed | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data Center HomeVehicle ReplacementStatesA CaseNovember

  5. Revolution Now: The Future Arrives for Five Clean Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data CenterFinancialInvesting inServicesRecovery

  6. A Clean Energy Revolution -- Now | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataEnergy Webinar: DemonstrationProgram | Department of EnergyA Clean

  7. Rotary engine

    SciTech Connect (OSTI)

    Larson, T. G.

    1985-10-22

    The rotary engine has a circumferential main chamber and at least one smaller combustion chamber spaced from the main chamber. The rotor includes a plurality of radially-projecting sealing members in spaced relationship thereabout for maintaining a fluid-sealed condition along a single fixed transverse strip area on the interior surface of the main chamber. A single radially-oriented axially-parallel piston vane is also carried by the rotor and moves through the fixed strip area of the main chamber at each revolution of the rotor. Plural passages for intake, compression, expansion, and exhaust are ported into the main chamber at locations proximate to the fixed strip area. Valve means in the passages selectively open and close the same for a cycle of engine operation involving intake, compression, burning, and exhaust.

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

    E-Print Network [OSTI]

    University, Jordan kma@philadelphia.edu.jo Dr. Ghada M. Amer Benha Higher Institute of Technology, Egypt dr oscillator controls the motor speed. The other mode is the closed-loop mode, in which the inverter power is essential for controlling the power devices of the inverter. The main problem with present rotor position

  9. Design, Fabrication, Assembly and Initial Testing of a SMART Rotor

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit theCovalent BondingMeeting |Design Competitions Designthe 29 th ASME Wind

  10. The rotor-oscillator flow : searching for coherence amidst chaos

    E-Print Network [OSTI]

    Fay, Sarah (Sarah C.)

    2015-01-01

    Chaotic mixing of highly viscous fluids is common in many biological and industrial processes. This study aims to gain insight about the properties of such common processes by examining one particular case of viscous, ...

  11. Control of an Active Magnetic Bearing-Rotor System

    E-Print Network [OSTI]

    Kang, Christopher

    2014-01-01

    To my colleagues in the Mechatronics and Controls Laboratoryphase Systems. ” Mechatronics, 22(5):577–587, August 2012. [in Digital Control. ” Mechatronics, IEEE/ASME Transactions

  12. Turbine rotor-stator leaf seal and related method

    DOE Patents [OSTI]

    Herron, William Lee (Cincinnati, OH); Butkiewicz, Jeffrey John (Simpsonville, SC)

    2003-01-01

    A seal assembly for installation between rotating and stationary components of a machine includes a first plurality of leaf spring segments secured to the stationary component in a circumferential array surrounding the rotating component, the leaf spring segments each having a radial mounting portion and a substantially axial sealing portion, the plurality of leaf spring segments shingled in a circumferential direction.

  13. Bore tube assembly for steam cooling a turbine rotor

    DOE Patents [OSTI]

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

    2002-01-01

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

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

    E-Print Network [OSTI]

    Mahajan, Shailendra

    1993-01-01

    Advantages of the switched reluctance motor (SRM) drive makes it an attractive candidate for replacing many adjustable speed ac and dc drives, in both industrial and consumer applications. The switched reluctance drives ...

  15. Asymmetric rotor analysis of DSOD spectra up to the r

    E-Print Network [OSTI]

    Giesen, Thomas

    West, Onagawa l6-1, Tsukuba 305-8569, Japan Received 17 January 2005; revised 18 January 2005; accepted, the a-type transitions are expected to appear at most only in the microwave and in the longer millimeter-wave of discharge-generated DSOD. At that time we had observed the r Q0 and r Q2 branches. The r Q3 branch

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

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

    interaction research that will increase the efficiency of wind power plants and lower the cost of electricity. The SWiFT facility, which was commissioned this July, is...

  17. SMART Wind Turbine Rotor: Data Analysis and Conclusions

    Energy Savers [EERE]

    "cRIO". The third RBU subsystem was an sm130 fiber optic interrogator from Micron Optics 52 which was named "Micron Optics Interrogator" or "MOI". Additional information on...

  18. CFD Simulation of the NREL Phase VI Rotor

    E-Print Network [OSTI]

    Song, Yang

    2014-01-01

    The simulation of the turbulent and potentially separating flow around a rotating, twisted, and tapered airfoil is a challenging task for CFD simulations. This paper describes CFD simulations of the NREL Phase VI turbine that was experimentally characterized in the 24.4m x 36.6m NREL/NASA Ames wind tunnel (Hand et al., 2001). All computations in this article are performed on the experimental base configuration of 0o yaw angle, 3o tip pitch angle, and a rotation rate of 72 rpm. The significance of specific mesh resolution regions to the accuracy of the CFD prediction is discussed. The ability of CFD to capture bulk quantities, such as the shaft torque, and the detailed flow characteristics, such as the surface pressure distributions, are explored for different inlet wind speeds. Finally, the significant three-dimensionality of the boundary layer flow is demonstrated.

  19. Connector tube for a turbine rotor cooling circuit

    DOE Patents [OSTI]

    Li, Ming Cheng (Cincinnati, OH)

    2003-06-24

    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.

  20. Full-scale wind turbine rotor aerodynamics research

    SciTech Connect (OSTI)

    Simms, D A; Butterfield, C P

    1994-11-01

    The United States Department of Energy and the National Renewable Energy Laboratory (NREL) are conducting research to improve wind turbine technology at the NREL National Wind Technology Center (NWTC). One program, the Combined Experiment, has focused on making measurements needed to understand aerodynamic and structural responses of horizontal-axis wind turbines (HAWT). A new phase of this program, the Unsteady Aerodynamics Experiment, will focus on quantifying unsteady aerodynamic phenomena prevalent in stall-controlled HAWTs. Optimally twisted blades and innovative instrumentation and data acquisition systems will be used in these tests. Data can now be acquired and viewed interactively during turbine operations. This paper describes the NREL Unsteady Aerodynamics Experiment and highlights planned future research activities.

  1. National Rotor Testbed Targets Future Wind Plant Research Needs |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing Tool Fits the BillDepartmentSites KDFNational Fuel CellAugust 2008) ToDepartment of

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo. 195 -Rob Roberts AboutSLED-Fact-Sheet.pdfEnergyEnergy Data

  3. PN Rotor 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to:Newberg,Energy LLC Jump to: navigation, searchPCSPEPCOLLC

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effect PhotovoltaicsStructureInnovation Portal Substantially Parallel Flux

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

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust, High-Throughput Analysis of Protein1-0845*RV 14800 ModificationSJTEnergy

  6. Sandia Energy - Structural and Mechanical Adaptive Rotor Technology

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust, High-Throughput AnalysisSinkhole OfficialsWorkSensorsEnergy(SMART) Final Project

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8, 2015 GATEWAY Takes 9.NewExtremeand NREL

  8. Hybrid Rotor Compression for Multiphase and Liquids-Rich Wellhead

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (JournalvivoHighHussein Khalil Hussein Khalil Director of FindHybridHybridto

  9. Field Test Results from the Sandia SMART Rotor

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article) | SciTechSubmittedEcologist for a Day Field GuideFieldField

  10. Fabrication, Integration and Initial Testing of a SMART Rotor

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunitiesofExtrans -ORGANIZATION FYMicrotransfer Molding- Energy

  11. Sandia Energy - Innovative Offshore Vertical-Axis Wind Turbine Rotors

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II)Geothermal Energy & DrillingNanomaterialsAssurance HomeInnovative

  12. Sandia Energy - National Rotor Testbed Functional Scaling Presented at

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II)Geothermal Energy &Water Power&GridMonitoring

  13. Performance gains in memory have traditionally been obtained by increasing memory bus widths and speeds. The

    E-Print Network [OSTI]

    Jacob, Bruce

    channels have supported up to 8 DIMMs of memory, some types of DDR channels support only 4 DIMMs, DDR2 channels have but 2 DIMMs, and DDR3 channels are expected to support only a single DIMM. In addition modules is identical to that seen in DDR2 or DDR3 systems, which we shall refer to as DDRx systems

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired Solar FuelTechnologyTel: Name: Rm. Tel:Test1The AmesBenefits of

  15. English Purchasing Power: The Rise of Consumerism in Rural England, 1675-1750

    E-Print Network [OSTI]

    O'Connell, Joseph

    2012-01-01

    preceding  the  Industrial  Revolution?            This  Although  the  Industrial  Revolution  is  a   momentous  The  First  Industrial  Revolution:  An  Economic  History  

  16. Geographic scope, scale, and local social structure: Survival of chain and independent retailers in California, 1990-2004

    E-Print Network [OSTI]

    MacGregor, Nydia Marie

    2011-01-01

    by   the   Industrial   Revolution   and   the  to   the   industrial   revolution,   the   retailing  wrought   by  the  Industrial  Revolution  in  the  United  

  17. System and method to determine electric motor efficiency nonintrusively

    DOE Patents [OSTI]

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

    2011-08-30

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

  18. Multiple vane rotary internal combustion engine

    SciTech Connect (OSTI)

    Pangman, E.L.

    1994-01-11

    A three-piece housing enclosing a cavity has rotatably mounted therein a rotor having a plurality of slots, each slot supporting a vane. Each vane has a retention end guided in its revolution around the rotor by an internal, non-circular vane retention track. Two adjacent vanes define opposite sides of a combustion chamber, while the housing and the portion of the rotor between the adjacent vanes form the remaining surfaces of the combustion chamber. Each combustion chamber is rotated past an intake port, a diagonal plasma bleed-over groove, and an exhaust port to accomplish the phases of a combustion cycle. Fuel ignition is provided to more than one combustion chamber at a time by expanding gases passing through a plasma bleed-over groove and being formed into a vortex that ignites and churns the charge in a succeeding combustion chamber. Exhaust gases remaining after primary evacuation are removed by a secondary evacuation system utilizing a venturi creating negative pressure which evacuates the combustion chamber. Lubrication is circulated through the engine without the use of a lubricant pump. The centrifugal force of the rotating rotor causes the lubricant therein to be pressurized thereby drawing additional lubricant into the closed system and forcing lubricant within the engine to be circulated. 9 figs.

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

    E-Print Network [OSTI]

    Mirza, Umar Karim

    2007-01-01

    for promoting solar energy and its ultimate recognition as aThe last chapter in this part is dedicated to solar energy.A short history of solar energy along with its transition

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

    E-Print Network [OSTI]

    Ulieru, Mihaela

    - Position Paper - Mihaela Ulieru Canada Research Chair Director, Adaptive Risk Management Laboratory occupational structures it offers a `top-down' designed rigid, highly specified division of labour separating the tasks and missions for which the `machine' was designed. Although labour is viewed as an input

  1. Open Learning: What Do Open Textbooks Tell Us About the Revolution in Education?

    E-Print Network [OSTI]

    Gary W. Matkin

    2009-01-01

    HowTo OER Commons: Open Educational Resources. http://available digitized educational resources will rapidlythe effects of open educational resources on educational

  2. 2 nature physics | VOL 6 | JANUARY 2010 | www.nature.com/naturephysics Come the revolution

    E-Print Network [OSTI]

    Loss, Daniel

    , the signs of such pre- revolutionary crisis seem most evident not so much in the concepts but in the basic be true in simple manufacturing processes, for example, where measurements can capture quality, production of several houses to buy, or who to hire for some job -- a desire to calculate leads people to focus

  3. Women weaving the dream of the revolution in the American continent

    E-Print Network [OSTI]

    Angeleri, Sandra

    2006-01-01

    ed. ), Social movements and social classes: the future ofed. ), Social movements and social classes: the future ofmovements. Social Movements and Social Movements Theories in

  4. Democratizing in Excess: A Marxist Interpretation of the Jasmine Revolutions in North Africa

    E-Print Network [OSTI]

    Agbo, Joseph N.; Chimakonam, Jonathan O.

    2015-01-01

    the productive force under feudalism. Under capitalism, thecommunalism, slave society, feudalism, capitalism andthe last three stages (Feudalism, Capitalism and Socialism/

  5. A review of "Henry Ireton and the English Revolution." by David Farr 

    E-Print Network [OSTI]

    Mcjimsey, Robert

    2007-01-01

    and demanded a more radical settle- ment based on ideas of popular sovereignty. From this point onwards Ireton and Cromwell were enmeshed in efforts to reconcile differences within the army?the Putney Debates?and confront the dawning realization that Charles...

  6. A review of "Absolutism and the Scientific Revolution: A Biographical Dictionary." by Christopher Baker ed. 

    E-Print Network [OSTI]

    Irving A. Kelter

    2003-01-01

    on the Renaissance and Reformation and on the late Middle Ages. The book begins with a short introduction by Christopher Baker, explaining the layout of the book and the principles of its organization. He argues that by 1600 the Renaissance was losing REVIEWS 341... is organized in the classic alphabetic manner, with short, succinct articles on 400 figures. Each article contains a short bibliography appended to it. There is also a useful chronology that precedes the articles and two appendices of entries, arranged...

  7. Living the Information Revolution: Digital Online Culture, Identity & Schooling in the 21st Century

    E-Print Network [OSTI]

    Rosenfeld, Kimberly Nicole

    2013-01-01

    Stress  of  combat  reaches  drone  crews.   Los  Angeles  2012/mar/18/nation/la-­?na-­?drone-­?stress-­?20120318  for  government  use  of  drone  aircraft.   American  

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

    E-Print Network [OSTI]

    Mirza, Umar Karim

    2007-01-01

    renewable as well. Solar energy, one such resource, is theThe Inevitability of Solar Energy," contains one chapter in

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

    E-Print Network [OSTI]

    Bohling, Joseph Estle

    2012-01-01

    Technocratic Ideals,” History and Technology 23 (SeptemberTechnocratic Ideals,” History and Technology 23 (September

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

    E-Print Network [OSTI]

    Skinner, Rebecca Elizabeth

    2013-01-01

    The American and world scientific elites differed immenselyThe American and world scientific elites differed immenselycontrasts with the scientific world. These cultural cohorts

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

    E-Print Network [OSTI]

    Albericci, Allison N. (Allison Nicole)

    2012-01-01

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

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

    E-Print Network [OSTI]

    Supple, Courtney Rampe

    2014-01-01

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

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

    E-Print Network [OSTI]

    Hoover, Charlie Doll

    1971-01-01

    , and dA is the time interval. For a rectangular-pulse load DLF is given as follows t DLF=1 ? cosmt=l ? cos 2r- T (1. 3) 12 for t & t DLF ~ cos m ( t t cos 2r (? T ) ? cos m t. d t t /T) ? cos 2s- d T (I 4) fo t td where T is the natural period... [&=E (ol+ot2s+a3 s +a4 s ) cos i 8 i=0 (2. 22) u = E 0 i=0 pi of (0 +'0 s) cos i 8 (2. 23) 0 v i=0 01 oi (n +0 s) sini8 (2. 24) also fd19 = J'pdv (2. 25) so that T = q pf(u + v + w ) dV o2 02 02 (2. 26) where p is the density...

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

    E-Print Network [OSTI]

    Haisler, Walter E

    1968-01-01

    relating [q} and [u} for an element 1 f 3 coefficients in expansion for slope matrix relating [q} and [e} for. an element C2 02 D E t/(1-v v ) s sB Bs E t/(1-v v ) sB Bs 2v E t/(I-v v ) sB s E t /[12(1-v v )] 3 s sB Ba 3 E t /[12(1-v v )] sB Bs... of ao element in the norma-', meridional, and circumferential directions are represented by poly- nomials in the meridional d'stance, s, and a Vouri er series in the circumferential angle, 6 IA (ni ~ ois + ois2 + ois3) cosi6 1 2 3 IB ( sl i=0 + o...

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

    E-Print Network [OSTI]

    Rhodes-Vivour, Patrick

    2008-01-01

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

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

    E-Print Network [OSTI]

    it contributing to global warming. On the other, natural gas can provide global energy security at a time when are at a crossroads when it comes to fossil fuels including natural gas. On the one hand there are concerns about ' s co r n e re d i to r ' s co r n e r Sustainable Gas Institute launches at Imperial a centre

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

    E-Print Network [OSTI]

    Mirza, Umar Karim

    2007-01-01

    >, Ph.D. Scholar, Pakistan Institute of Engineering andNilore, Islamabad 45650, Pakistan. TEL: 92-51-2207381, FAX:by Umar Karim Mirza Pakistan Institute of Engineering and

  18. The forces and strategies that shaped a revolution Narayan B. Mandayam

    E-Print Network [OSTI]

    Mandayam, Narayan

    subscribers Today- 6 billion cellphones worldwide! #12;3 Course introduced in Fall 2008 Open to all juniors #12;6 Learning from the experts The power of Ignorance (and Curiosity) I'm really smart! I'm really

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

    E-Print Network [OSTI]

    O'Donnell, Tom

    ) http://www.cfr.org/ 8) EIA at http://www.eia.doe.gov/ Note the Country Analysis Briefs, CAB 9) IEA at http://www.iea.org/ Especially the World Energy Outlook (WEO) 10) CIA Country Briefs at http) Links to other databases here: UNSD, OPEC, IEF, IEA, EUROSTAT, OLADE 15) IAEE (International Association

  20. Implementing the Third Industrial Revolution : a case study of a French example

    E-Print Network [OSTI]

    Malidin, Florian

    2015-01-01

    Economic growth is now stalling in Europe and at the same time unemployment has remained at high levels for a long time. On the other hand, the United-States are posting record growth rates and enjoy low unemployment, in ...

  1. Intended and unintended consequences of democracy promotion assistance to Georgia after the Rose Revolution

    E-Print Network [OSTI]

    Driscoll, J.

    What are the political consequences of democratization assistance to regimes transitioning from authoritarian rule? By exploiting the downstream effects of a field experiment designed to encourage citizen monitoring of ...

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

    E-Print Network [OSTI]

    Ng, Chi Kin

    1978-01-01

    loading cond1t1ons are presented and compared witn exact solutions. ACKNOWLEDGMENTS The author wishes to express his sincere gratitude and appreciation to Dr. Jack Y. K, Lou, Associate Professor of Civil Engineering, Texas AiiM University, for his time... Concent. rated Load of 2000 lbs. with a Forcing Frequence of 40 c. p. s. at Apex. 34 Radial Displacement Due to a Concentrated Load of 2000 lbs. with a Forcing Frequency of 240 c. p. s. at Apex . v 1 i NOMENCLATURE AM C(Sx) CD GP GQ radius...

  3. Democratizing in Excess: A Marxist Interpretation of the Jasmine Revolutions in North Africa

    E-Print Network [OSTI]

    Agbo, Joseph N.; Chimakonam, Jonathan O.

    2015-01-01

    in power of the leaders of Tunisia, Egypt, and Libya. TheseEgypt that saw the return of protesters to Cairo’s Tahir square following Mubarak’s succes- sor allotting dictatorial powers

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

    E-Print Network [OSTI]

    Alimagham, Pouya

    2013-01-01

    Egyptian military to power in Egypt and its proximity to thematter of the military’s power in Egypt highlights the corereal center of power in Egypt. ” Every Egyptian president

  5. Women weaving the dream of the revolution in the American continent

    E-Print Network [OSTI]

    Angeleri, Sandra

    2006-01-01

    e indígenas bajo el neoliberalismo,” in Análisis Político, #e indígenas bajo el neoliberalismo,” in Análisis Político, #

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

    E-Print Network [OSTI]

    Mirza, Umar Karim

    2007-01-01

    energy markets, solar industry expansion and cost economicsremarks that solar PV modules production cost has dropped 86

  7. Revolution Now: The Future Arrives for Five Clean EnergyTechnologies...

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

    four transformational technologies: land-based wind power, silicon photovoltaic (PV) solar modules, light-emitting diodes (LEDs), and electric vehicles (EVs). That study...

  8. The causes of religious wars : holy nations, sacred spaces, and religious revolutions

    E-Print Network [OSTI]

    Gregg, Heather Selma, 1971-

    2004-01-01

    In the wake of September 11th, policy analysts, journalists, and academics have tried to make sense of the rise of militant Islam, particularly its role as a motivating and legitimating force for violence against the US. ...

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

    E-Print Network [OSTI]

    Magdy, Walid; Weber, Ingmar

    2015-01-01

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

  10. Bottle Revolution: Constructing Consumer and Producer Identities in the Craft Beer Industry?

    E-Print Network [OSTI]

    Pozner, Jo-Ellen; De Soucey, Michaela; Sikavica, Katarina

    2014-01-01

    Goes Global: A Kansas City Brewery's Tale. Morning edition.B. (2003). The American Brewery: From Colonia Evolution to611-639. Bland, A. 2014. Big Breweries Move Into Small Beer

  11. Bottle Revolution: Constructing Consumer and Producer Identities in the Craft Beer Industry

    E-Print Network [OSTI]

    Pozner, Jo-Ellen; DeSoucey, Michaela; Sikavica, Katarina

    2015-01-01

    B. (2003). The American Brewery: From Colonia Evolution toGoes Global: A Kansas City Brewery's Tale. Morning edition.611-639. Bland, A. 2014. Big Breweries Move Into Small Beer

  12. A review of "The English Martyr from Reformation to Revolution" by Alice Dailey 

    E-Print Network [OSTI]

    Wright, Jonathan

    2014-01-01

    : they include bloodthirsty persecutors, martyrs who are immune to pain and suffering, and martyrs who are unusually truculent and argumentative. Speech acts are also of great importance (verbal confes- sion of belief is regarded as crucial) and, rather more...

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

    E-Print Network [OSTI]

    Skinner, Rebecca Elizabeth

    2013-01-01

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

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

    E-Print Network [OSTI]

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

    2009-01-01

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

  15. Surface Pressure Observations from Smartphones:3 A Potential Revolution for High-Resolution Weather Prediction?4

    E-Print Network [OSTI]

    Mass, Clifford F.

    numbers of surface observations39 to greatly improve our ability to describe and forecast the three of the observational problems that plague46 surface wind, temperature and humidity; unlike wind and temperature, and is not seriously impacted by48 downstream obstacles or urbanization. Surface pressure is not influenced

  16. A Revolution That Will Transform How We Live, Work, And Think

    E-Print Network [OSTI]

    Qiu, Robert Caiming

    at 360 different points from sensors in a car seat and indexing each point on a scale from zero to 256 and sentiments8/8/2013 10 #12;When interaction become data "Information about information". The metadata associated with each posted information is rich. Metadata includes user's language, geo-location, the number

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

    E-Print Network [OSTI]

    on the environment and have limited economic and societal disruption during implementation. In this opinion paper, we-fold perspective: analyzing the fundamental physicochemical principles and engineering aspects of these energy themes in basic energy science that cut across the entire spectrum a Drexel University, Department

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

    E-Print Network [OSTI]

    Duerksen, Benjamin

    2012-07-16

    This study utilizes correspondence, memoirs, and secondary sources to explore the lives and careers of six Continental Navy captains?Esek Hopkins, Joshua Barney, John Paul Jones, Hector McNeill, Lambert Wickes, and John ...

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

    E-Print Network [OSTI]

    Bond, Shelley R.

    1996-01-01

    introduces the principal female mission workers who served the Methodist Episcopal Church and the Methodist Episcopal Church, South in Mexico, and the work they did. Women's work had an impact on Mexico through their educational, medical and social work...

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

    E-Print Network [OSTI]

    Roussos, George

    Incentive Programs, Waste Hauling Automation & Smart Packaging RFID ­ The New Future of Retail Everything Harvesting, and Food Safety RFID and Social Networks RFID Brings the Digital `Like' to the Physical World for Waste Management I

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

    Broader source: Energy.gov [DOE]

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

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

    E-Print Network [OSTI]

    Skinner, Rebecca Elizabeth

    2013-01-01

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

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

    E-Print Network [OSTI]

    Parker, B. F.

    2007-01-01

    of Delaware Press, 2006. 270 pp. index. append. bibl. $49.50. Review by B. F. PARKER, ISOTHERMAL COMMUNITY COLLEGE. In her ambitious study of three female prophets (Eleanor Davies, Anna Trapnel, and Margaret Fell), Teresa Feroli argues that women entered...

  4. Demobilizing the Revolution: Migration, Repatriation and Colonization in Mexico, 1911-1940

    E-Print Network [OSTI]

    Walsh, Casey

    2000-01-01

    and agrarian history, Mexico set migration and colonizationMigration, Repatriation and Colonization in Mexico, 1911-Walsh / Migration, Repatriation and Colonization in Mexico,

  5. 21H.802 Modern Latin America, 1808-Present: Revolution, Dictatorship, Democracy, Fall 2002

    E-Print Network [OSTI]

    Ravel, Jeffrey S.

    Selective survey of Latin American history from the wars of independence at the start of the nineteenth century to the present. Issues studied include: independence and its aftermath, slavery and its abolition, Latin America ...

  6. Women weaving the dream of the revolution in the American continent

    E-Print Network [OSTI]

    Angeleri, Sandra

    2006-01-01

    the Venezuelan oil-based governmental strategy with financecomes from oil extraction? The hegemony of finance capitalfinance speculation expelled them and made them move to the 5 th Avenue. An oil

  7. Thermal stress analysis of asymmetrically loaded shells of revolution by the matrix displacement method 

    E-Print Network [OSTI]

    Beck, Joseph Raymond

    1969-01-01

    ;e internal energy of th t!!e clem nt correctly with ca! expression containing the n derivative of displace sent, the displacemen function m&ust have a th continuous (n-I) derivative. ln the case of p' az!e stress, the internal energv de, ends on first... dS i=0 0 0 26 277 L C&CosiQde)(n+n, S+nS+n&S)(a+2aS)rdS '0 0 277, (L D& Cos ie de ) (2n +6n S) r dS i l. 0 0 6 9 277 'L Egi Dy Cos ie de ~ n. (a2 + 2a&S) r dS 0 0 DJCos iede)(ng+n6S)2a31dS ) Si 0 0 f'2 77 JL + [ o C i Cos ie dQ ) (n...

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

    E-Print Network [OSTI]

    Litvine, Alexis D.

    2014-05-08

    of the East India and the Virginia companies by associating merchant adventurers with busy bees, which ‘from furthest parts abroad, … fetch and bring the hony to the Hive, laborious Bees, they clothe and feede the poore, and give the willing man imployment... and the correspondence between microcosmic (individual) and macrocosmic (social) qualities relied on a twofold comparison: first, a series of zoological metaphors and anthropomorphisms attributing industrious virtues to animals such as ants or bees, and, second...

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

    E-Print Network [OSTI]

    Pradhan, Shishusri

    2013-11-27

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

  10. Living the Information Revolution: Digital Online Culture, Identity & Schooling in the 21st Century

    E-Print Network [OSTI]

    Rosenfeld, Kimberly Nicole

    2013-01-01

    man  who  started  the  hacker  wars.   The  New  Yorker.  Wark,  M.  (2004).   A  hacker  manifesto.  Cambridge,  are  Anonymous:  Inside  the  hacker  world  of  Lulzsec,  

  11. Living the Information Revolution: Digital Online Culture, Identity & Schooling in the 21st Century

    E-Print Network [OSTI]

    Rosenfeld, Kimberly Nicole

    2013-01-01

    Mexico  and  Venezuela,  as  they  all  have  had  strong  governmental   influence  in  the  development  of  their  Internet  

  12. Living the Information Revolution: Digital Online Culture, Identity & Schooling in the 21st Century

    E-Print Network [OSTI]

    Rosenfeld, Kimberly Nicole

    2013-01-01

    December  30).  Drone  porn:  The  newest  YouTube  hit.  keith-­?thomson/drone-­?porn-­?the-­? newest-­?you_videos,  coined  “drone  porn”  for  the  controversial  

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

    E-Print Network [OSTI]

    Mirza, Umar Karim

    2007-01-01

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

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

    E-Print Network [OSTI]

    Bohling, Joseph Estle

    2012-01-01

    sur la guillotine. ” In Albert Camus and Arthur Koestler,to the newspaper. Albert Camus, for example, wroteintellectuals such as Albert Camus and François Mauriac

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

    E-Print Network [OSTI]

    Lopez, Sofia Alejandra

    2013-01-01

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

  16. Women weaving the dream of the revolution in the American continent

    E-Print Network [OSTI]

    Angeleri, Sandra

    2006-01-01

    Partidos y Sindicatos en Venezuela, 1936-1950. Centauro,en Cuadernos de Cendes, Universidad Central de Venezuela,Caracas, Venezuela, Año Segundo, Enero-Abril 1994, pp. 25-

  17. Living the Information Revolution: Digital Online Culture, Identity & Schooling in the 21st Century

    E-Print Network [OSTI]

    Rosenfeld, Kimberly Nicole

    2013-01-01

    technology  that  they   interact  with  either  as  initiators  (i.e. ,  participation  in  blogs,  

  18. Travel, work, and telecommunications: a view of the electronics revolution and its potential impacts

    E-Print Network [OSTI]

    Garrison, William L.; Deakin, Elizabeth

    2006-01-01

    Datamation, October, 214-220. Garrison W. (1970) ComputerPOTENTIAL IMPACTS WILLIAM L. GARRISON and Ei.izAnErH DEAKINthat family re- W. L. GARRISON and E. DEAKIN sponsibilities

  19. Democratizing in Excess: A Marxist Interpretation of the Jasmine Revolutions in North Africa

    E-Print Network [OSTI]

    Agbo, Joseph N.; Chimakonam, Jonathan O.

    2015-01-01

    wonder in this unipolar, new world order whether there is anleaders of the new world order or democratic institutions

  20. The Biofuels Revolution: Understanding the Social, Cultural and Economic Impacts of Biofuels Development on Rural Communities

    SciTech Connect (OSTI)

    Dr. Theresa L. Selfa; Dr. Richard Goe; Dr. Laszlo Kulcsar; Dr. Gerad Middendorf; Dr. Carmen Bain

    2013-02-11

    The aim of this research was an in-depth analysis of the impacts of biofuels industry and ethanol plants on six rural communities in the Midwestern states of Kansas and Iowa. The goal was to provide a better understanding of the social, cultural, and economic implications of biofuels development, and to contribute to more informed policy development regarding bioenergy.Specific project objectives were: 1. To understand how the growth of biofuel production has affected and will affect Midwestern farmers and rural communities in terms of economic, demographic, and socio-cultural impacts; 2. To determine how state agencies, groundwater management districts, local governments and policy makers evaluate or manage bioenergy development in relation to competing demands for economic growth, diminishing water resources, and social considerations; 3. To determine the factors that influence the water management practices of agricultural producers in Kansas and Iowa (e.g. geographic setting, water management institutions, competing water-use demands as well as producersâ?? attitudes, beliefs, and values) and how these influences relate to bioenergy feedstock production and biofuel processing; 4. To determine the relative importance of social-cultural, environmental and/or economic factors in the promotion of biofuels development and expansion in rural communities; The research objectives were met through the completion of six detailed case studies of rural communities that are current or planned locations for ethanol biorefineries. Of the six case studies, two will be conducted on rural communities in Iowa and four will be conducted on rural communities in Kansas. A â??multi-methodâ? or â??mixed methodâ? research methodology was employed for each case study.

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

    E-Print Network [OSTI]

    Acemoglu, Daron

    2012-04-06

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

  2. The Poet and the Prince: Revising Moliere and Tartuffe in the French Revolution

    E-Print Network [OSTI]

    Leon, Mechele

    2005-01-01

    stream_size 55417 stream_content_type text/plain stream_name 447.pdf.txt stream_source_info 447.pdf.txt Content-Encoding ISO-8859-1 Content-Type text/plain; charset=ISO-8859-1 The Poet and the Prince: Revising Moli... extraordinary benefit and frustrating inconsistency. This complex relationship between the poet and the prince was promptly seized on by revolutionaries eager to use it to shore up arguments for theater regulation in the name of a new regime. The second part...

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

    E-Print Network [OSTI]

    Marshall, Alexander William

    2013-01-01

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

  4. Living the Information Revolution: Digital Online Culture, Identity & Schooling in the 21st Century

    E-Print Network [OSTI]

    Rosenfeld, Kimberly Nicole

    2013-01-01

    Museum.  (2006a).  Internet  History  -­?  1962-­?1992.  www.computerhistory.org/internet_history/   LIVING  THE  Museum.  (2006b).  Internet  History  -­?  1980’s.  

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

    E-Print Network [OSTI]

    Mirza, Umar Karim

    2007-01-01

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

  6. Proposition 13 Thirty Years after the Revolution: What Would Howard Jarvis Say?

    E-Print Network [OSTI]

    Fox, Joel D

    2009-01-01

    taxes belongs to the taxpayer. That is the revolutionaryJarvis. He formed the taxpayer group that now bears his nameadvocacy on behalf of the taxpayers. As Howard would say: “A

  7. The Biography of the Snow Jeanie: A Merchant Vessel in the Pre-Revolution Tobacco Trade 

    E-Print Network [OSTI]

    Costello, Renee

    2014-09-15

    of the shipyard. He then fastened the stern and the sternpost to the ends of the keel. Each frame of the vessel consisted of one floor timber which served as the lowermost component of the frame, at least four overlapping futtocks to lengthen the floor, and a... and bolted through them, connecting it to the keel (Goldenberg 1976). Figure 13. Ray Brown’s Portrait of a New England Shipyard (Abbot 1902) The shipwright then faced the complicated task of cutting and fastening the remaining timbers. He ran two...

  8. MHK ISDB/Sensors/True North Revolution 2X | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas:Montezuma,Information MHKMHK ISDB/Sensors/Smart BarometricMHK ISDB/Sensors/True

  9. MHK ISDB/Sensors/True North Revolution AV | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas:Montezuma,Information MHKMHK ISDB/Sensors/Smart BarometricMHK ISDB/Sensors/TrueAV

  10. MHK ISDB/Sensors/True North Revolution GS | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas:Montezuma,Information MHKMHK ISDB/Sensors/Smart BarometricMHK

  11. MHK ISDB/Sensors/True North Revolution LP | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas:Montezuma,Information MHKMHK ISDB/Sensors/Smart BarometricMHKMHK

  12. Controls: The unsung hero of the industrial internet revolution | GE Global

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAuditsClusterInformationContract Management Princeton Site»MethaneCenter

  13. #CleanTechNow: America's Clean Energy Revolution | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopmentatabout WhoQUESTIONS", Prof.EnergyLED#CleanTechNow:

  14. CET2001 Customer Led Network Revolution (Smart Grid Project) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank, Maine:Kansas: Energy Resources Jump to:EnergyCEEG NanJingCEPISCERCLA

  15. From the Building to the Grid: An Energy Revolution and Modeling Challenge: Workshop Proceedings

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding accessby aLED Street LightingFrom the Building to the Grid: An

  16. NANOFLUIDICS REVOLUTION: PROTECTING THE WORLD ONE DROP AT A TIME (Journal

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report: AchievementsTemperatures Year 6 -FINALEnergy, Office(TechnicalReactiveN O

  17. Biden Says U.S. Will Lead Energy Revolution | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann JacksonDepartment|Marketing, LLC |Energy Advisor the fishworked3 ProgressIn

  18. From the Building to the Grid: An Energy Revolution and Modeling Challenge

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article)Forthcoming UpgradesArea: PADD 1 to PADD 2 From the Building

  19. From the Building to the Grid: An Energy Revolution and Modeling Challenge: Workshop Proceedings

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article)Forthcoming UpgradesArea: PADD 1 to PADD 2 From the

  20. From the Building to the Grid: An Energy Revolution and Modeling Challenge;

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article)Forthcoming UpgradesArea: PADD 1 to PADD 2 From theWorkshop

  1. From the Building to the Grid: an Energy Revolution and Modeling Challenge Workshop Part 1

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article)Forthcoming UpgradesArea: PADD 1 to PADD 2 From

  2. RevolutionƒNow The Future Arrives for Five Clean Energy Technologies…2015 Update

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram: Report AppendicesA Token Requesting AQuestions

  3. Review: Memory Practices in the Sciences by Geoffrey C. Bowker

    E-Print Network [OSTI]

    Nguyen, Lilly

    2008-01-01

    rooted in the industrial revolution. Watches encouraged aCoupled with the industrial revolution, geological practice

  4. How to Proceed After Copenhagen

    E-Print Network [OSTI]

    Kunnas, Jan

    2011-01-01

    fossil fuel driven industrial revolution equals the totalcountries since the industrial revolution. If developed

  5. New Scientist|Space|Technology|Environment|New Scientist Jobs|Subscribe to New Scientist New Scientist, 2578, 18 November 2006

    E-Print Network [OSTI]

    Horvitz, Eric

    revolution will be recognised as a transformation as significant as the industrial revolution. The evolution

  6. Some Evolutionary Economics of Family Partnerships

    E-Print Network [OSTI]

    Bergstrom, Ted C

    2007-01-01

    fertility, and the industrial revolution. Journal of thedata. Prior to the industrial revolution, it appears that

  7. Cyclogiro windmill

    DOE Patents [OSTI]

    Brulle, R.V.

    1981-09-03

    A cyclogiro windmill has a rotor provided with blades shaped in the configuration of symmetrical airfoils and actuators to pivot the blades about axes parallel to the axis of rotation for the rotor. The actuator for each blade constantly changes the rock angle for the blade, that is its angle with respect to a reference on the rotor, and this modulation is such that the blade in making a revolution around the axis of rotation for the rotor undergoes an interval of static operation wherein its angle of attack is for the most part constant and less than the static stall angle, a short interval where the blade flips to position in which its opposite surface is presented toward the free wind, a short interval of dynamic operation wherein the angle of attack exceeds the static stal angle, another interval of static operation at an angle of attack of essentially the same magnitude as before, another interval of blade flip, and another interval of dynamic operation. During the intervals of dynamic operation, the blades experience a significant increase in lift force without a corresponding increase in drag, so that a high lift-to-drag ratio develops. The blades during dynamic operation further develop strong vortices which are directed outwardly at the sides of the windmill stream tube, and this increases the width of the stream tube, causing a greater mass of air to flow through the rotor. The short intervals of operation under dynamic conditions enable the blades to extract more energy from the free wind than would be possible if the blade operated solely under static conditions, and this in turn renders the windmill more useful in moderate velocity winds as well as high velocity winds.

  8. A tilt rotor UAV for long endurance operations in remote environments

    E-Print Network [OSTI]

    VanderMey, Josiah T

    2011-01-01

    Extended mission times will greatly expand the utility of small UAVs that are currently limited to a single flight lasting no more than a few hours. This thesis assesses the challenges to developing a small, long endurance ...

  9. Observer for the Rotor Temperature of IPMSM Andreas Specht, Joachim Bocker

    E-Print Network [OSTI]

    Noé, Reinhold

    hybrid drive-trains mostly include inte- rior permanent magnet synchronous machines (IPMSM). This type Terms--Automotive application, Electrical machine, Estimation technique, Flux model, Hybrid electric vehicle (HEV), Permanent magnet motor, Synchronous motor, Ther- mal stress I. INTRODUCTION Today's modern

  10. A two-factor saturation model for synchronous machines with multiple rotor circuits

    SciTech Connect (OSTI)

    Tahan, S.A. [Universite Laval, Quebec (Canada)] [Universite Laval, Quebec (Canada); Kamwa, I. [Institut de Recherche d`Hydro-Quebec, Varennes, Quebec (Canada)] [Institut de Recherche d`Hydro-Quebec, Varennes, Quebec (Canada)

    1995-12-01

    It is generally felt that no major accuracy break-through in predicting the steady-state and transient performance of synchronous machines could be achieved without taking proper account of the iron saturation effects as well as eddy-current losses. Although the two issues were often treated separately in the past, this paper attempts to unite them by developing a general model covering both the main-path magnetic saturation and frequency effects in the dynamic equations. Mathematical analysis in the d-q space pinpoints cross-saturation coupling which, a priori, does not seem to be symmetrical for salient-pole machines. Yet the model is theoretically sound, since it fulfills at least the physical constraints using energy balance principles. Some test points from a 555-MVA turbine-generator are used for an initial assessment of the model`s capability to predict the field current and internal angle for various loading conditions.

  11. Synthesis and characterization of molecular rotors as viscosity sensors and beta amyloid binding agents

    E-Print Network [OSTI]

    Sutharsan, Jeyanthy

    2009-01-01

    Synthesis and Evaluation as Viscosity Sensors IntroductionSynthesis and Evaluation as Viscosity Sensors14and evaluation of these compounds as viscosity sensors. The

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

    E-Print Network [OSTI]

    Oradat, Frank Robert

    1953-01-01

    &&ring of the hei art- ment of Ilecnariical Err& neerin:. Nr. E. E. Brush, Nr. P. E. Weick, Nr. R. B. Hulet, Mr. B. B. Ha&sr&sr, i~u-. Te&i Neiller, arid iMr. G. A. Ii?tn oi' tris I egart- ment of Aer&n?utical EnHineerinS. Nr. W. D. Scoates and Nr. W, P. Meads...? the dray nin=e, vith tne fl, &g g in!- ri n. "e on tne nla?e; tnus tne efi'ect of fl q pine. on pitch voulc! be eli, ~in?ted. Insteaa of 'isin, a I ericil on inie ?ynanic vibrats on indic&itor, the ?sf le t3 orr sr&oui? be f. . d to tire y lates oi' iri...

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

    E-Print Network [OSTI]

    Marin, Manuel

    1996-01-01

    The critical speeds of a turbomachine can be defined as the speeds at which synchronous response to imbalance is maximum (Vance,1988). Identifying the proper placement of critical speeds is very important in the design process of turbomachinery...

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

    E-Print Network [OSTI]

    Boyer, Edmond

    in "Journal of Engineering for Gas Turbines and Power 131, 1 (2009) 012502" #12;INTRODUCTION This study problem. The first part of this paper updates the methodology developed in9 . This method con- sists to the cyclic modeshapes as defined by Laxalde et al.8 , and the process used to generate the subspaces in which

  15. Measurements of unbalance response in a squeeze film damper test rotor-kit 

    E-Print Network [OSTI]

    Laos, Hector Emilio

    1995-01-01

    was experimentally measured at the top of the SFD and no oil cavitation was detected from the tests. However, air entrainment was clearly observed while passing through the system resonant speed. Theoretical pressure distribution plots from a "short bearing" model...

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

    E-Print Network [OSTI]

    Parthasarathy, Nikhil Kaushik

    2004-09-30

    and accurate predictions of whirl amplitudes, maximum contact load and stress in the bearings, transmissibility, thermal growths, maximum and minimum damper pressures and the amount of unbalanced force for incipient oil film cavitation. It requires about 4...

  17. Quantum diffusion dynamics in nonlinear systems: A modified kicked-rotor model

    SciTech Connect (OSTI)

    Gong Jiangbin [Department of Physics and Centre of Computational Science and Engineering, National University of Singapore, 117542 (Singapore); Wang Jiao [Temasek Laboratories and Beijing-Hong Kong-Singapore Joint Center for Nonlinear and Complex Systems (Singapore), National University of Singapore, 117542 (Singapore)

    2007-09-15

    Using a simple method analogous to a quantum rephasing technique, a simple modification to a paradigm of classical and quantum chaos is proposed. The interesting quantum maps thus obtained display remarkably rich quantum dynamics. Emphasis is placed on the destruction of dynamical localization without breaking periodicity, unbounded quantum anomalous diffusion in integrable systems, and transient dynamical localization. Experimental realizations of this work are also discussed.

  18. Localization-Delocalization Transition in a System of Quantum Kicked Rotors

    SciTech Connect (OSTI)

    Creffield, C.E.; Hur, G.; Monteiro, T.S. [Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom)

    2006-01-20

    The quantum dynamics of atoms subjected to pairs of closely spaced {delta} kicks from optical potentials are shown to be quite different from the well-known paradigm of quantum chaos, the single {delta}-kick system. We find the unitary matrix has a new oscillating band structure corresponding to a cellular structure of phase space and observe a spectral signature of a localization-delocalization transition from one cell to several. We find that the eigenstates have localization lengths which scale with a fractional power L{approx}({Dirac_h}/2{pi}){sup -0.75} and obtain a regime of near-linear spectral variances which approximate the 'critical statistics' relation {sigma}{sub 2}(L){approx_equal}{chi}L{approx_equal}(1/2)(1-{nu})L, where {nu}{approx_equal}0.75 is related to the fractal classical phase-space structure. The origin of the {nu}{approx_equal}0.75 exponent is analyzed.

  19. Effects of rotor blade modulation on GNSS anti-jamming algorithms

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , France) in 1998. After having been involved in the development of radiofrequency front-end for GPS for the development of controlled radiated pattern antenna products. ABSTRACT In hostile environment, Global

  20. Multi-piece wind turbine rotor blades and wind turbines incorporating same

    DOE Patents [OSTI]

    Moroz; Emilian Mieczyslaw (San Diego, CA) [San Diego, CA

    2008-06-03

    A multisection blade for a wind turbine includes a hub extender having a pitch bearing at one end, a skirt or fairing having a hole therethrough and configured to mount over the hub extender, and an outboard section configured to couple to the pitch bearing.