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  • Acoustic and aerothermal performance test of the axisymmetric coannular ejector nozzle [microform] / William Herkes.

    • 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, 2000-
    • 2000

  • A new method for reduction of photomultiplier signal-induced noise [microform] / Andrea Koble, Russell DeYoung.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; Springfield, VA : National Technical Information Service, distributor, [2000]
    • 2000

  • Piloted simulation study of the effect of high-lift aerodynamics on the takeoff noise of a representative high-speed civil transport [microform] / Louis J. Glaab ... [et al.].

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1999]
    • 1999

  • Aeroacoustics of flight vehicles [microform] : theory and practice / edited by Harvey H. Hubbard.

    • Text
    • Washington, D.C. : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program ; [Springfield, Va. : For sale by the National Technical Information Service, 1991- ]
    • 1991-present

  • A PDE-based methodology for modeling, parameter estimation and feedback control in structural and structural acoustic systems [microform] / H.T. Banks ... [et al.].

    • Text
    • Hampton, Va. : Institute for Computer Applications in Science and Engineering, NASA Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1994]
    • 1994

  • 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

  • Improvements in spiral-bevel gears to reduce noise and increase strength [microform] / David G. Lewicki ... [et al.].

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration ; [Adelphi, Md.] : U.S. Army Research Laboratory ; [Springfield, Va. : National Technical Information Service, distributor, 1994]
    • 1994

  • A review of gear housing dynamics and acoustics literature [microform] / Teik Chin Lim and Rajendra Singh.

    • Text
    • [Washington, D.C.] : National Aeronautics and Space Administration ; [Cleveland, Ohio] : US Army Aviation Systems Command, Aviation R&T Activity ; [Springfield, Va. : National Technical Information Service, distributor, 1989]
    • 1989

  • Computerized design and generation of low-noise helical gears with modified surface topology [microform] / F.L. Litvin ... [et al.].

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration ; [Adelphi, Md.] : U.S. Army Research Laboratory ; [Springfield, Va. : National Technical Information Service, distributor, 1994]
    • 1994

  • Control of wind tunnel operations using neural net interpretation of flow visualization records [microform] / Alvin E. Buggele and Arthur J. Decker.

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

  • Discretized energy minimization in a waveguide with point sources [microform] / G. Probst.

    • Text
    • Hampton, VA : Institute for Computer Applications in Science and Engineering, NASA Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1994]
    • 1994

  • A parametric study of transonic blade-vortex interaction noise [microform] / A.S. Lyrintzis, Y. Xue ; principal investigator A.S. Lyrintzis.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1991]
    • 1991

  • Anaylsis of interior noise ground and flight test data for advanced turboprop aircraft applications [microform] / M.A. Simpson and B.N. Tran.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1991]
    • 1991

  • The effect of swirl recovery vanes on the cruise noise of an advanced propeller [microform] / James H. Dittmar and David G. Hall.

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

  • Noise measurements from an ejector suppressor nozzle in the NASA Lewis 9- by 15-foot low speed wind tunnel [microform] / Eugene A. Krejsa ... [et al.].

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

  • Prediction of the noise from a propeller at angle of attack [microform] / Eugene A. Krejsa.

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

  • Aircraft interior noise reduction by alternate resonance tuning [microform] : progress report for the period ending December, 1988 / prepared by Donald B. Bliss ... [et al.].

    • Text
    • Durham, N.C. : Dept. of Mechanical Engineering and Materials Science, Duke University ; [Washington, D.C.? : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Center, distributor, 1989]
    • 1989

  • Modification of the Ames 40- by 80-foot wind tunnel for component acoustic testing for the second generation supersonic transport [microform] / F.H. Schmitz, J.R. Allmen, and P.T. Soderman.

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

  • Potential uses of vacuum bubbles in noise and vibration control [microform] / Istvan L. Ver.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1989]
    • 1989

  • Ultra-high bypass ratio jet noise [microform] / John K.C. Low.

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

  • The aeroacoustics of supersonic coaxial jets [microform] / Milo D. Dahl.

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

  • Analysis of modified SMI method for adaptive array weight control [microform] / By Ronald Louis Dilsavor.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1989]
    • 1989

  • Background noise levels measured in the NASA Lewis 9-by 15-foot low-speed wind tunnel [microform] / Richard P. Woodward ... [et al.].

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

  • Hyperspectral data analysis procedures with reduced sensitivity to noise [microform] / David A. Landgrebe.

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

  • Resonant interaction of a linear array of supersonic rectangular jets [microform] : an experimental study / Ganesh Raman and Ray Taghavi.

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

  • The use of cowl camber and taper to reduce rotor/stator interaction noise [microform] / R. Martinez.

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

  • Jet mixer noise suppressor using acoustic feedback [microform] / inventor, Edward J. Rice.

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

  • Active control of fan noise--feasibility study [microform].

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

  • Design of source coders and joint source/channel coders for noisy channels [microform] : semi-annual status report ... May 15, 1987 - November 15, 1987 / principal investigator, Khalid Sayood.

    • Text
    • Greenbelt, Md. : Instrument Division, Engineering Directorate, Goddard Space Flight Center ; [Springfield, Va. : National Technical Information Service, distributor, 1987]
    • 1987

  • The Telecommunications and data acquisition progress report 42-90, April-June 1987 [microform] / E.C. Posner, editor.

    • Text
    • Pasadena, Calif. : National Aeronautics and Space Administration, Jet Propulsion Laboratory, California Institute of Technology ; [Springfield, Va. : National Technical Information Service [distributor], 1987]
    • 1987

  • Supersonic jet noise reductions predicted with increased jet spreading rate [microform] / Milo D. Dahl and Philip J. Morris.

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

  • A study of methods to predict and measure the transmission of sound through the walls of light aircraft [microform] : semi-annual status report, reporting period 5/15/86 - 11/15/86 / submitted by R.J. Bernhard, principal investigator ... [et al.].

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1986]
    • 1986

  • HALOE science investigation [microform] : semiannual progress report, February 1986 - July 1986 / D. Chris Benner.

    • Text
    • Williamsburg, Va. : The College of William and Mary ; [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1986]
    • 1986

  • An experimental investigation of the interior noise control effects of propeller synchrophasing [microform] / J.D. Jones and C.R. Fuller.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : For sale by the National Technical Information Service, 1986]
    • 1986

  • Noise exposure reduction of advanced high-lift systems [microform] / Stephen W. Haffner.

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

  • 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

  • Supersonic coaxial jet noise predictions [microform] / Milo D. Dahl and Philip J. Morris.

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

  • Experimental study using nearfield acoustic holography of sound transmission through fuselage sidewall structures [microform] / J.D. Maynard.

    • Text
    • [Washington, D.C.? : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1986]
    • 1986

  • Free-jet acoustic investigation of high-radius-ratio coannular plug nozzles [microform] / P.R. Knott ... [et al.].

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

  • Study of one- and two-dimensional filtering and deconvolution algorithms for a streaming array computer [microform] : final report : [appendices] / George E. Ioup, principal investigator.

    • Text
    • [Washington, D.C. : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1985?]
    • 1985

  • Noise impact of advanced high lift systems [microform] : contract NAS1-20103 / Kevin R. Elmer and Mahendra C. Joshi.

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

  • Aerodynamic performance investigation of advanced mechanical suppressor and ejector nozzle concepts for jet noise reduction [microform] : / C.D. Wagenknecht, E.D. Bediako.

    • Text
    • [Cleveland, Ohio] : Lewis Research Center : National Aeronautics and Space Administration, Scientific and Technical Information Branch ; [Springfield, Va. : National Technical Information Service, distributor], 1985.
    • 1985

  • Lightweight sidewalls for aircraft interior noise control [microform] / D.N. May ... [et al.].

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

  • A study of methods to predict and measure the transmission of sound through the walls of light aircraft [microform] : semi-annual status report, reporting period 10/1/85 - 5/15/86 / submitted by R.J. Bernhard, principal investigator ... [et al.].

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1986]
    • 1986

  • The noise reduction potential of dual-stream coaxial rectangular improperly expanded jet flows [microform] : final grant report, NASA Langley grant NAG-1-1240, covering the period March 1991 to March 1993 / Darshan Dosanjh, Eric F. Spina.

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

  • UHB engine fan broadband noise reduction study [microform] / Philip R. Gliebe, Patrick Y. Ho, Ramani Mani.

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

  • Computerized design and generation of low-noise gears with localized bearing contact [microform] / F.L. Litvin ... [et al.].

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

  • Bell Helicopter Advanced Rotorcraft Transmission (ART) program [microform] : final report / [Zachary S. Henry].

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration ; [Adelphi, Md.] : U.S. Army Research Laboratory ; [Springfield, Va. : National Technical Information Service, distributor, 1995]
    • 1995

  • A review of propeller noise prediction methodology 1919-1994 [microform] / F. Bruce Metzger.

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

  • Aerospace applications of integer and combinatorial optimization [microform] / by S.L. Padula and R.K. Kincaid.

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

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