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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

  • Euler solutions to nonlinear acoustics of non-lifting hovering rotor blades [microform] / J.D. Baeder.

    • Text
    • Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center : US Army Aviation Systems Command, Aviation Research and Technology Activity ; [Springfield, Va. : For sale by the National Technical Information Service, distributor, 1991]
    • 1991

  • 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

  • Acoustic properties and durability of liner materials at non-standard atmospheric conditions [microform] / K.K. Ahuja, R.J. Gaeta, Jr., and J.S. Hsu.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1994]
    • 1994

  • Semi-annual report for NASA grant NAG-1-431 [microform] : period, November 1, 1986 - April 30, 1987 / principal investigator, B.T. Smith.

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

  • Biot theory and acoustical properties of high porosity fibrous materials and plastic foams [microform] / J. Allard and A. Aknine.

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

  • 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

  • A finite element propagation model for extracting normal incidence impedance in nonprogressive acoustic wave fields [microform] / Willie R. Watson ... [et al.].

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

  • Window acoustic study for advanced turboprop aircraft [microform] / R.A. Prydz, F.J. Balena.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1984]
    • 1984

  • 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

  • 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

  • Effect of density gradients in confined supersonic shear layers [microform] / Oshin Peroomian and R.E. Kelly.

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

  • Experimental investigation of wing installation effects on a two-dimensional mixer/ejector nozzle for supersonic transport aircraft [microform] / David J. Anderson, Heather H. Lambert, and Masashi Mizukami.

    • Text
    • [Washington, D.C.] : NASA ; [Springfield, Va. : National Technical Information Service, distributor, 1992]
    • 1992

  • An experimental investigation of flow-induced oscillations of the Brüel & Kjaer in-flow microphone [microform] / Richard S. Fields, Jr.

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

  • Acoustic and magnetic heating of chromospheres/coronae [microform] : are there distinct signatures? : final technical report for grant NAG 5 3046 / [principal investigator], D.J. Mullan.

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

  • Characteristics of residual mixing noise from internal fan/core mixers [microform] / Eugene A. Krejsa and Naseem H. Saiyed.

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

  • The effects of linear microphone array changes on computed sound exposure level footprints [microform] / Arnold W. Mueller, Mark R. Wilson.

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

  • Aeroacoustic characteristics of a rectangular multi-element supersonic jet mixer-ejector nozzle [microform] / Ganesh Raman, Ray Taghavi.

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

  • Exact solutions for sound radiation from a circular duct [microform] / Y.C. Cho and K. Uno Ingard.

    • Text
    • Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1997]
    • 1997

  • XV-15 structural-acoustic data [microform] / Karen H. Lyle.

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

  • Benefits of swept and leaned stators for fan noise reduction [microform] / Richard P. Woodward ... [et al.].

    • Text
    • [Cleveland, Ohio] : National Aeronautics and Space Administration, Lewis Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1998]
    • 1998

  • Acoustic treatment design scaling methods [microform].

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

  • Noise reduction with lobed mixers [microform] : nozzle-length and free-jet speed effects / Vinod G. Mengle ... [et al.].

    • Text
    • [Cleveland, Ohio] : National Aeronautics and Space Administration, Lewis Research Center ; Springfield, VA : National Technical Information Service, distributor, [1997]
    • 1997

  • Eigenmodes of ducted flows with radially-dependent axial and swirl velocity components [microform] / Kenneth A. Kousen.

    • Text
    • [Cleveland, Ohio] : National Aeronautics and Space Administration, Glenn Research Center ; Springfield, VA : National Technical Information Service, distributor, [1999]
    • 1999

  • TFaNS Ṯone ̲F̲an Ṉoise Design/Prediction ̲System [microform] / David A. Topol.

    • Text
    • [Cleveland, Ohio] : National Aeronautics and Space Administration, Glenn Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1999- ]
    • 1999-present

  • Broadband transmission loss due to reverberant excitation [microform] / Lawrence P. Barisciano, Jr.

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

  • Acoustic absorption characteristics of an orifice with a mean bias flow [microform] / K.K. Ahuja, R.J. Gaeta, and M.D'Agostino.

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

  • Performance optimization of a rotor alone Nacelle for acoustic fan testing [microform] / C.C. Cunningham, W.K. Thompson, and C.E. Hughes.

    • Text
    • [Cleveland, Ohio] : National Aeronautics and Space Administration, Glenn Research Center ; Springfield, VA : National Technical Information Service, distributor, [2000]
    • 2000

  • ALDAS user's manual [microform] / Michael E. Watts.

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

    Available Online

    http://purl.access.gpo.gov/GPO/LPS59838

  • Asymptotic modal analysis and statistical energy analysis [microform] / Earl H. Dowell and Linda F. Peretti.

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

    Available Online

    http://purl.access.gpo.gov/GPO/LPS63966

  • Lobed mixer design for noise suppression [microform] : acoustic and aerodynamic test data analysis / Vinod G. Mengle and Willaim N. Dalton.

    • Text
    • [Cleveland, Ohio] : National Aeronautics and Space Administration, Glenn Research Center ; Springfield, VA : National Technical Information Service, distributor, [2002-
    • 2002-present
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS71495

  • An analysis for the sound field produced by rigid wide chord dual rotation propellers of high solidity in compressible flow [microform] / Sridhar M. Ramachandra and Lawrence J. Bober.

    • Text
    • [Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, 1986]
    • 1986

  • 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

  • Acoustic mode measurements in the inlet of a model turbofan using a continuously rotating rake [microform] / Laurence J. Heidelberg and David G. Hall.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration, 1992]
    • 1992

  • Large-scale Advanced Propfan (LAP) performance, acoustic and weight estimation, January, 1984 [microform] / D. Parzych, [S. Cohen, A. Shenkman].

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

  • Empennage noise shielding benefits for an open rotor transport / Jeffrey J. Berton ; prepared for the 17th Aeroacoustics Conference cosponsored 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/gpo27502

  • Acoustic performance of a real-time three-dimensional sound-reproduction system / Kenneth J. Faller II, Stephen A. Rizzi, Aric R. Aumann.

    • Text
    • Hampton, Virginia : National Aeronautics and Space Administration, Langley Research Center, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo45686

  • The aerodynamic performance of an over-the-rotor liner with circumferential grooves on a high bypass ratio turbofan rotor / Richard F. Bozak, Christopher E. Hughes, James Buckley.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, August 2013.
    • 2013-8
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo49564

  • The alternative low noise fan / James H. Dittmar [and four others].

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, September 2000.
    • 2000-9
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/LPS59301

  • The alternative low noise fan / James H. Dittmar [and four others].

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, October 2000.
    • 2000-10
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo51422

  • Acoustic performance of drive rig mufflers for model scale engine testing / David B. Stephens.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, 2013.
    • 2013
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo51671

  • Recent improvements to the Acoustical Testing Laboratory at the NASA Glenn Research Center / Devin M. Podboy [and three others].

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Langley Research Center, March 2014.
    • 2014-3
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo51826

  • Hybrid wing body shielding studies using an ultrasonic configurable fan artificial noise source generating typical turbofan modes / Daniel L. Sutliff and Clifford A. Brown, Bruce E. Walker.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, April 2014.
    • 2014-4
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo53741

  • Large Civil Tiltrotor (LCTR2) interior noise predictions due to turbulent boundary layer excitation / Ferdinand W. Grosveld.

    • Text
    • Hampton, Virginia : National Aeronautics and Space Administration, Langley Research Center, June 2013.
    • 2013-6
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo53817

  • Acoustic test characterization of melamine foam for usage in NASA's payload fairing acoustic attenuation systems / William O. Hughes, Anne M. McNelis, and Mark E. McNelis.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, June 2014.
    • 2014-6
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo56128

  • NASA Engineering and Safety Center (NESC) enhanced melamine (ML) foam acoustic test (NEMFAT) / Anne M. McNelis, William O. Hughes, and Mark E. McNelis.

    • Text
    • Hampton, Virginia : National Aeronautics and Space Administration, Langley Research Center, February 2014.
    • 2014-2
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo54979

  • Open rotor aeroacoustic modelling / Edmane Envia.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, October 2012.
    • 2012-10
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo61676

  • Application of an aligned and unaligned signal processing technique to investigate tones and broadband noise in fan and contra-rotating open rotor acoustic spectra / Jeffrey Hilton Miles and Lennart S. Hultgren.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, September 2015.
    • 2015-9
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo64653

  • Characteristics of residual mixing noise from internal fan/core mixers / Eugene A. Krejsa and Naseem H. Saiyed.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, January 1997.
    • 1997-1
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo70932

  • Inlet acoustic data from a high bypass ratio turbofan rotor in an internal flow component test facility / Richard F. Bozak.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, May 2017.
    • 2017-5
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo82411

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