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  • Measurements and modeling of flow structure in the wake of a low profile "wishbone" vortex generator [microform] / B.J. Wendt and W.R. Hingst.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1994?]
    • 1994

  • Optical measurement of unducted fan flutter [microform] / Anatole P. Kurkov and Oral Mehmed.

    • Text
    • [Washington, DC] : NASA ; [Springfield, Va. : National Technical Information Service, distributor, 1991]
    • 1991

  • Aeroacoustic effects of reduced aft tip speed at constant thrust for a model counterrotation turboprop at takeoff conditions [microform] / Richard P. Woodward and Christopher E. Hughes.

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration ; [Springfield, Va. : For sale by the National Technical Information Service, 1990]
    • 1990

  • Noise of a model high speed counterrotation propeller at simulated takeoff/approach conditions (F7/A7) [microform] / Richard P. Woodward ; prepared for the 11th Aeroacoustics Conference sponsored by the American Institute of Aeronautics and Astronautics, Sunnyvale, California, October 19-21, 1987.

    • Text
    • [Washington, D.C.] : National Aeronautics and Space Administration ; [Springfield, Va. : National Technical Information Service, distributor, 1987]
    • 1987

  • Effect of angular inflow on the vibratory response of a counter-rotating propeller [microform] : by J.E. Turnberg, P.C. Brown.

    • Text
    • [Washington, DC] : NASA ; [Springfield, Va. : For sale by the National Technical Information Service, 1985]
    • 1985

  • Rotary balance data and analysis for the X-29A airplane for an angle-of-attack range of 0⁰ to 90⁰ [microform] / John N. Ralston.

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration, Scientific and Technical Information Branch ; [Springfield, Va. : National Technical Information Service, distributor], 1984.
    • 1984

  • Numerical simulation of stability and stabiity control of high speed compressible rotating couette flow [microform] : final report for NASA grant NAG-1-1103 / principal investigator, Sedat Biringen, research associate, Ferhat F. Hatay.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1993]
    • 1993

  • Design and fabrication of forward-swept counterrotation blade configuration for wind tunnel testing [microform] : final report / prepared by G.H. Nichols.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1994]
    • 1994

  • Twin Rotor Turbopump program [microform] : contract NAS8-97161; progress report, 1 July 1997 through 31 July 1997 ... / prepared by Pratt & Whitney--Space Propulsion.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1997]
    • 1997

  • Final technical report for aeroelastic analysis of counter rotation fans [microform] : NASA grant number NAG3-742; grant duration, September 1, 1986 to December 31, 1993 / Theo G. Keith, Jr., principal investigator; Durbha V. Murthy, co-principal investigator.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1997]
    • 1997

  • Advanced gearbox technology [microform] : final report / by N. E. Anderson, ... [et al.].

    • Text
    • [Cleveland, Ohio] : NASA Lewis Research Center, [1987]
    • 1987
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS60952

  • High speed turboprop aeroacoustic study (counterrotation). Volume 1, Model development [microform] / C.E. Whitfield, R. Mani, and P.R. Gliebe.

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration ; [Springfield, Va.? : National Technical Information Service, distributor, 1990]
    • 1990
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS69903

  • Some design philosophy for reducing the community noise of advanced counter-rotation propellers [microform] / James H. Dittmar.

    • Text
    • [Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, 1985]
    • 1985

  • Noise reduction for model counterrotation propeller at cruise by reducing aft-propeller diameter [microform] / James H. Dittmar and David B. Stang.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, [1987]
    • 1987
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS92375

  • Takeoff/approach noise for a model counterrotation propeller with a forward-swept upstream rotor [microform] / Richard P. Woodward, ... [et al.].

    • Text
    • [Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, 1993]
    • 1993

  • Initial investigation of the acoustics of a counter-rotating open rotor model with historical baseline blades in a low-speed wind tunnel / David M. Elliott.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, [2012]
    • 2012
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo26275

  • Acoustic shielding for a model scale counter-rotation open rotor / David B. Stephens and Edmane Envia ; prepared for the 17th Aeroacoustics Conference sponsored by the American Institute of Aeronautics and Astronautics and the Confederation of European Aerospace Societies, Portland, Oregon, June 5-8, 2011.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, [2012]
    • 2012
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo27508

  • Nearfield unsteady pressures at cruise Mach numbers for a model scale counter-rotation open rotor / David B. Stephen.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, 2012.
    • 2012
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo33023

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