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  • Wake geometry measurements and analytical calculations on a small-scale rotor model [microform] / Terence A. Ghee ... [et al.].

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1996]
    • 1996

  • A study of rotor broadband noise mechanisms and helicopter tail rotor noise [microform] / Shau-Tak Rudy Chou.

    • Text
    • Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1990]
    • 1990

  • Forward sweep, low noise rotor blade [microform] / inventor, Thomas F. Brooks.

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

  • Computation of helicopter rotor acoustics in forward flight [microform] / Roger Strawn, Rupak Biswas.

    • Text
    • [Moffett Field, Calif.] : Research Institute for Advanced Computer Science, NASA Ames Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1994]
    • 1994

  • Sensitivity of lag-damping correlations to structural and aerodynamic approximations of isolated experimental rotors in forward flight [microform] : interim technical report under NASA-Ames Research grant no. NAG-2-797 (August 1, 1992 - December 21, 1993) / G.H. Gaonkar, S. Subramanian, Srinivas Chunduru.

    • Text
    • Boca Raton, FL : Florida Atlantic University, Dept. of Mechanical Engineering, College of Engineering ; [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1994]
    • 1994

  • An overview of a model rotor icing test in the NASA Lewis Icing Research Tunnel [microform] / Randall K. Britton, Thomas H. Bond and Robert J. Flemming.

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

  • The potential of genetic algorithms for conceptual design of rotor systems [microform] / William A. Crossley, Valana L. Wells, David H. Lananen.

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

  • Dynamic analysis of rotor blade undergoing rotor power shutdown [microform] / Khanh Q. Nguyen.

    • Text
    • Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center ; [Springfield, Va. : For sale by the National Technical Information Service, 1990]
    • 1990

  • Higher harmonic control analysis for vibration reduction of helicopter rotor systems [microform] / Khanh O. Nguyen.

    • Text
    • Edwards, Calif. : National Aeronautics and Space Administration, Ames Research Center, Dryden Flight Research Facility ; [Springfield, Va. : National Technical Information Service, distributor, 1994]
    • 1994

  • 2-D and 3-D oscillating wing aerodynamics for a range of angles of attack including stall [microform] / R.A. Piziali.

    • Text
    • Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center : US Army Aviation and Troop Command ; [Springfield, Va. : National Technical Information Service, distributor, 1994]
    • 1994

  • Simulation of rotor blade element turbulence [microform] / R.E. Mc Farland, Ken Duisenberg.

    • Text
    • Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1995]
    • 1995

  • Numerical investigation of the effects of icing on fixed and rotary wing aircraft [microform] : progress report for the period January 1, 1992-June 30, 1992 / prepared by L.N. Sankar.

    • Text
    • [Washington, D.C. : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1992]
    • 1992

  • Integrated aerodynamic/dynamic/structural optimization of helicopter rotor blades using multilevel decomposition [microform] / Joanne L. Walsh ... [et al.].

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; Linthicum Heights, MD : NASA Center for AeroSpace Information, distributor ; Springfield, Va. : National Technical Information Service, distributor, [1995]
    • 1995

  • Application of higher harmonic control to hingeless rotor systems [microform] / Khanh Nguyen and Inderjit Chopra.

    • Text
    • Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center ; [Springfield, Va. : For sale by the National Technical Information Service, 1991]
    • 1991

  • Individual-blade-control research in the MIT VTOL Technology Laboratory 1977-1985 [microform] / Norman D. Ham.

    • Text
    • Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1986]
    • 1986

  • Numerical investigation of the effects of icing on fixed and rotary wing aircraft [microform] : progress report for the period January 1, 1992 - June 30, 1992 / prepared by L.N. Sankar.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1992]
    • 1992

  • Evaluation of a doubly-swept blade tip for rotorcraft noise reduction [microform] / Brian E. Wake and T. Alan Egolf.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1992]
    • 1992

  • Aeroelasticity and structural optimization of composite helicopter rotor blades with swept tips [microform] / K.A. Yuan and P.P. Friedmann.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1995]
    • 1995

  • Flow structure generated by perpendicular blade vortex interaction and implications for helicopter noise predictions [microform] : semi-annual report to NASA Langley for worked performed under the grant / principal investigators: William J. Devenport, Stewart A.L. Glegg.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1995]
    • 1995

  • An examination of the aerodynamic moment on rotor blade tips using flight test data and analysis [microform] / Thomas H. Maier and William G. Bousman.

    • Text
    • Moffett Field, Calif. : US Army Aviation and Troop Command : National Aeronautics and Space Administration, Ames Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1993]
    • 1993

  • Aeroelastic model helicopter rotor testing in the Langley TDT [microform] / Wayne, R. Mantay ... [et al.].

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1985]
    • 1985

  • Parametric analysis of a passive cyclic control device for helicopters [microform] / Hiroyuki Kumagai.

    • Text
    • [Washington, DC] : NASA ; [Springfield, Va. : National Technical Information Service, distributor, 1984]
    • 1984

  • Application of response surface techniques to helicopter rotor blade optimization procedure [microform] / Joseph Lynn Henderson, Joanne L. Walsh and Katherine C. Young.

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1995]
    • 1995

  • A method to analyze and optimize the load sharing of split path transmissions [microform] / Timothy L. Krantz.

    • Text
    • [Washington, D.C.] : National Aeronautics and Space Administration : U.S. Army Research Laboratory ; [Springfield, Va. : National Technical Information Service, distributor, 1997]
    • 1997

  • The spectral and statistical properties of turbulence generated by a vortex/blade-tip interaction [microform] : final technical report ... / William J. Devenport, principal investigator; Kenneth S. Wittmer; Christian W. Wenger.

    • Text
    • Blacksburg, VA : Dept. of Aerospace and Ocean Engineering, Virginia Polytechnic Institute and State University ; [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1997]
    • 1997

  • Navier-Stokes calculations for a highly-twisted rotor near stall [microform] / Gloria K. Yamauchi and Wayne R. Johnson.

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

  • An aeroelastic analysis of helicopter rotor blades incorporating piezoelectric fiber composite twist actuation [microform] / W. Keats Wilkie, K.C. Park.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1996]
    • 1996

  • Helicopter blade-vortex interaction noise with comparisons to CFD calculations [microform] / Megan S. McCluer.

    • Text
    • [Washington, D.C. : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1996]
    • 1996

  • Aeroelastic stability of a full-scale hingeless rotor [microform] / Randall L. Peterson and Khanh Nguyen.

    • Text
    • Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1996]
    • 1996

  • Fatigue life methodology for tapered composite flexbeam laminates [microform] / Gretchen B. Murri and T. Kevin O'Brien, Carl Q. Rousseau.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1997]
    • 1997

  • A new higher-order composite theory for analysis and design of high speed tilt-rotor blades [microform] / Thomas Robert McCarthy.

    • Text
    • [Washington, D.C.] : National Aeronautics and Space Administration ; [Springfield, Va. : National Technical Information Service, distributor, 1996]
    • 1996

  • Performance and vibratory loads data from a wind-tunnel test of a model helicopter main-rotor blade with a paddle-type tip [microform] / William T. Yeager, Jr. ... [et al.].

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, VA : National Technical Information Service, distribution, 1997]
    • 1997

  • Identification of rotorcraft structural dynamics from flight and wind tunnel data [microform] : final report covering the period February 1991 - August 1992, prepared under NASA-Ames agreement no. NAG 2-694 ... / Robert M. McKillip, Jr., principal investigator.

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

  • Computation of loads on the McDonnell Douglas advanced bearingless rotor [microform] / Khanh Nguyen, Dan Lauzon and Vaidyanathan Anand.

    • Text
    • [Mesa, AZ : American Helicopter Society, Inc. ; Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, c1994]
    • 1994

  • Development of an automatic differentiation version of the FPX rotor code [microform] / by Hong Hu.

    • Text
    • Hampton, Va. : Hampton University ; [Washington, DC] : National Aeronautics and Space Administration ; [Springfield, Va. : National Technical Information Service, distributor, 1996]
    • 1996

  • A rigorous framework for optimization of expensive functions by surrogates [microform] / Andrew J. Booker ... [et al.].

    • Text
    • Hampton, VA : Institute for Computer Applications in Science and Engineering, NASA Langley Research Center ; Springfield, VA : National Technical Information Service, distributor, [1998]
    • 1998

  • Rotating shake test and modal analysis of a model helicopter rotor blade [microform] / W. Keats Wilkie, Paul H. Mirick, and Chester W. Langston.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1997]
    • 1997

  • Experimental evaluation of face gears for aerospace drive system applications [microform] / Robert F. Handschuh ... [et al.].

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration ; [Cleveland, OH] : U.S. Army Research Laboratory ; [Springfield, Va. : National Technical Information Service, distributor, 1996]
    • 1996

  • Full-potential modeling of blade-vortex interactions [microform] / Henry E. Jones.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1997]
    • 1997

  • Methodology of blade unsteady pressure measurement in the NASA transonic flutter cascade [microform] / J. Lepicovsky ... [et al.].

    • Text
    • [Cleveland, Ohio] : National Aeronautics and Space Administration, Glenn Research Center ; Hanover, MD : Available from NASA Center for Aerospace Information ; Springfield, VA : National Technical Information Service [distributor, 2002]
    • 2002
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS42580

  • Helicopter rotor noise due to ingestion of atmospheric turbulence [microform] / John C. Simonich ... [et al.].

    • Text
    • [Washington, D.C.] : National Aeronautics and Space Administration, Scientific and Technical Information Branch ; [Springfield, Va. : For sale by the National Technical Information Service,] 1986.
    • 1986

  • Documentation of ice shapes on the main rotor of a UH-1H helicopter in hover [microform] / John D. Lee and Rorry Harding and Richard L. Palko.

    • Text
    • [Cleveland, Ohio] : National Aeronautics and Space Administration, Lewis Research Center, [1984]
    • 1984

  • Performance data from a wind-tunnel test of two main-rotor blade designs for a utility-class helicopter [microform] / Jeffrey D. Singleton, William T. Yeager, Jr., and Matthew L. Wilbur.

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division ; [Springfield, Va. : For sale by the National Technical Information Service], 1990.
    • 1990
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS62831

  • The effects of structural flap-lag and pitch-lag coupling on soft inplane hingeless rotor stability in hover [microform] / William G. Bousman.

    • Text
    • Washington, D.C. : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division ; [Springfield, Va. : For sale by the National Technical Information Service], 1990.
    • 1990
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS65436

  • Aerodynamic characteristics of two rotorcraft airfoils designed for application to the inboard region of a main rotor blade [microform] / Kevin W. Noonan.

    • Text
    • Washington, D.C. : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division ; [Springfield, Va. : For sale by the National Technical Information Service], 1990.
    • 1990
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS65498

  • A new methodology for free wake analysis using curved vortex elements [microform] / Donald B. Bliss, Milton E. Teske, and Todd R. Quackenbush.

    • Text
    • [Washington, D.C.] : National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1987.
    • 1987
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS67054

  • A novel potential viscous flow coupling technique for computing helicopter flow fields [microform] / J. Michael Summa, Daniel J. Strash, Sungyul Yoo.

    • Text
    • Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center, [1990]
    • 1990
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS67056

  • Analysis of small-scale rotor hover performance data [microform] / Cahit Kitaplioglu.

    • Text
    • Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center ; [Springfield, Va. : For sale by the National Technical Information Service, 1990]
    • 1990
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS67740

  • Airloads, wakes, and aeroelasticity [microform] / Wayne Johnson.

    • Text
    • Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center, [1990]
    • 1990
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS69236

  • Model helicopter rotor high-speed impulsive noise [microform] : measured acoustics and blade pressures / D. A. Boxwell ... [et al.].

    • Text
    • Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center, [1983]
    • 1983
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS89480

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