1–20 von 207 Ergebnissen
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    Water Injection Feasibility for Boeing 747 Aircraft

    Daggett, David L. | NTRS | 2005
    benefit might be to improve engine turbine life. A tradeoff exists between engine fuel efficiency and NOx emissions. As engines improve fuel ...
    Schlagwörter: Aircraft Propulsion And Power

    V/STOL lift fan commercial short haul transports: Continuing conceptual design study

    Zabinsky, J. M. / Minkler, W. F. / Bohn, J. G. et al. | NTRS | 1974
    , payload, cruise speed, and propulsion system failure philosophy. All designs used propulsion systems consisting of multiple gas generators driving ...

    V/STOL gets a lift

    Biesiadny, Tom | NTRS | 1991
    , flight experiments, and ground environment experiments. Propulsion system technology centers about the adaptation of existing or off-the-shelf ...

    Visions of the Future: Hybrid Electric Aircraft Propulsion

    Bowman, Cheryl L. | NTRS | 2016
    of traditional gas turbine propulsion and electric drive enabled propulsion. This technology suite includes elements of propulsion and ...
    Schlagwörter: electric propulsion , Aircraft Propulsion And Power , hybrid propulsion

    Vision 2030 Aircraft Propulsion Grand Challenge Problem: Full-engine CFD Simulations with High Geometric Fidelity and Physics Accuracy

    M S Anand / Gorazd Medic / Umesh Paliath et al. | NTRS
    disciplines. One of the proposed challenges was in the gas turbine propulsion area, focusing on transient full engine simulations. The current paper ...
    Schlagwörter: turbine , turbine engine , Aircraft Propulsion And Power

    Variable-Speed Simulation of a Dual-Clutch Gearbox Tiltrotor Driveline

    DeSmidt, Hans / Wang, Kon-Well / Smith, Edward C. et al. | NTRS | 2012
    a fully nonlinear transient gas-turbine engine model, 2) including clutch stick-slip friction effects, 3) including shaft flexibility, 4 ...

    Utilization of planetary atmospheres for power and propulsion operations

    Dipprey, D. F. / Young, D. L. | NTRS | 1967
    Mars and Venus atmospheres as working fluids in gas turbines and liquid oxidizers for rocket engines ...

    Using Engine Thrust for Emergency Flight Control: MD-11 and B-747 Results

    Burcham, Frank W., Jr. / Maine, Trindel A. / Burken, John J. et al. | NTRS | 1998
    capability within the available range of lateral center-of-gravity offset. Propulsion-controlled aircraft systems that can operate without ...

    Unducted-Fan Engine

    Meleason, Edward T. / Johnson, K. O. | NTRS | 1987
    . Combines modern high-pressure-ratio gas-turbine engine with multistage counterrotating power turbine directly coupled to counterrotating, advanced ...

    Two-Stage Axial Compressor Rig Designed To Develop and Validate Advanced Aerodynamic Technologies

    Larosiliere, Louis M. | NTRS | 2003
    Future aeropropulsion gas turbine engines must be affordable in addition to being energy efficient and environmentally benign. Progress in ...
    Schlagwörter: Aircraft Propulsion And Power

    Turbomachinery technology for high-speed civil flight

    Saunders, Neal T. / Glassman, Arthur J. | NTRS | 1989
    Schlagwörter: Aircraft Propulsion And Power

    Turbine Electrified Energy Management (TEEM) For Enabling More Efficient Engine Designs

    Culley, Dennis E. / Kratz, Jonathan L. / Thomas, George L. | NTRS | 2018
    these electrical machines to improve the thermal efficiency and performance of the gas turbine engine. Noting this deficit, a novel operability ...
    Schlagwörter: Aircraft Propulsion And Power

    Tripropellant engine study

    Wheeler, D. B. / Kirby, F. M. | NTRS | 1978
    mode 1 and LOX/H2 in mode 2 was examined. Various engine system concepts were formulated that included staged combustion and gas generator ...
    Schlagwörter: Spacecraft Propulsion And Power

    Thin-film sensors for space propulsion technology: Fabrication and preparation for testing

    Kim, Walter S. / Hepp, Aloysius F. | NTRS | 1989
    . Established aircraft engine gas turbine technology is currently being adapted to turbine engine blade materials and the environment encountered in the ...
    Schlagwörter: Spacecraft Propulsion And Power

    Thin-film sensors for reusable space propulsion systems

    Hepp, Aloysius F. / Kim, Walter S. | NTRS | 1989
    blades up to 1800 F. Established aircraft engine gas turbine technology is currently being adapted to turbine engine blade materials and the ...
    Schlagwörter: Spacecraft Propulsion And Power

    The strainrange partitioning behavior of an advanced gas turbine disk alloy, AF2-1DA

    Halford, G. R. / Nachtigall, A. J. | NTRS | 1979
    The low-cycle, creep-fatigue characteristics of the advanced gas turbine disk alloy, AF2-1DA have been determined at 1400 F and are ...

    The selection of convertible engines with current gas generator technology for high speed rotorcraft

    Eisenberg, Joseph D. | NTRS | 1990
    projected year 2000 convertible technology limited to present gas generator technology. Propulsion systems for utilization on aircraft needing ...
    Schlagwörter: Aircraft Propulsion And Power

      The selection of convertible engines with current gas generator technology for high speed rotorcraft

      Eisenberg, Joseph D. | NTRS | 1990
      projected year 2000 convertible technology limited to present gas generator technology. Propulsion systems for utilization on aircraft needing ...
      Schlagwörter: Aircraft Propulsion And Power

    Thermal measurements for jets in disturbed and undisturbed crosswind conditions

    Wark, Candace E. / Foss, John F. | NTRS | 1988
    -temperature air jets introduced into gas turbine combustor aft sections in order both to cool the high-temperature gases and quench the combustion ...
    Schlagwörter: Aircraft Propulsion And Power

    The NASA quiet engine program.

    Kramer, J. J. / Montegani, F. J. | NTRS | 1972
    The NASA quiet engine program will incorporate all available noise-reduction technology into a propulsion system suitable for subsonic ...
    Schlagwörter: Propulsion Systems