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  • Contact stresses in gear teeth--a new method of analysis [microform] / Paisan Somprakit and Ronald L. Huston and Fred B. Oswald.

    • Text
    • [Washington, D.C.] : National Aeronautics and Space Administration ; [St. Louis, Mo.] : US Army Aviation Systems Command, Aviation R&T Activity ; [Springfield, Va. : For sale by the National Technical Information Service, distributor, 1991]
    • 1991

  • Vibration and noise analysis of a gear transmission system [microform] / F.K. Choy ... [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

  • Prediction of contact path and load sharing in spiral bevel gears [microform] / George D. Bibel, Karuna Tiku and Ashok Kumar.

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

  • Manual for automatic generation of finite element models of spiral bevel gears in mesh [microform] / G.D. Bibel and S. Reddy and A. Kumar.

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration, [1994]
    • 1994

  • A procedure for 3-D contact stress analysis of spiral bevel gears [microform] / A. Kumar and G. Bibel.

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration, [1994]
    • 1994

  • Application of fault detection techniques to spiral bevel gear fatigue data [microform] / James J. Zakrajsek and Robert F. Handschuh and Harry J. Decker.

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

  • Analysis of the effects of surface pitting and wear on the vibrations of a gear transmission system [microform] / F.K. Choy ... [et al.].

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

  • Analytical and experimental vibration analysis of a faulty gear system [microform] / F.K. Choy ... [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

  • Computer-aided design of bevel gear tooth surfaces [microform] / Shuo Hung Chang, Ronald L. Huston, and John J. Coy.

    • Text
    • [Washington, DC] : NASA ; [Cleveland, Ohio] : U.S. Army Aviation Systems Command, Aviation R&T Activity ; [Springfield, Va. : For sale by the National Technical Information Service, 1989]
    • 1989

  • Topology of modified helical gear and tooth contact analysis (TCA) program [microform] / Faydor L. Litvin and Jiao Zhang.

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

  • Wormgear geometry adopted for implementing hydrostatic lubrication and formulation of the lubrication problem [microform] / D.C. Sun and Qin Yuan.

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

  • Detecting gear tooth fracture in a high contact ratio face gear mesh [microform] / James J. Zakrajsek ... [et al.].

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

  • Face-gear drives [microform] : design, analysis, and testing for helicopter transmission applications / F.L. Litvin ... [et al.].

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration ; [St. Louis, Mo.] : US Army Aviation Systems Command ; [Springfield, Va. : National Technical Information Service, distributor, 1992]
    • 1992

  • Thermal behavior of spiral bevel gears [microform] / Robert F. Handschuh.

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

  • A review of transmission diagnostics research at NASA Lewis Research Center [microform] / James J. Zakrajsek.

    • Text
    • Cleveland, Ohio : The Center ; [Springfield, Va. : National Technical Information Service, distributor, 1994]
    • 1994

  • Study of the kinematic and load sharing properties of wormgearing with non-symmetric tooth profiles [microform] / D.C. Sun and Qin Yuan.

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

  • New generation methods for spur, helical, and spiral-bevel gears [microform] / F.L. Litvin ... [et al.] ; prepared for the the Rotary Wing Propulsion System Specialist Meeting, Williamsburg, Virginia, November 12-14, 1986.

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

  • Using hob offset to balance dynamic strength in spur gears [microform] / Chuen-Huei Liou ... [et al.].

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

  • Generation and computerized simulation of meshing and contact of modified involute helical gears [microform] / Faydor L. Litvin, Ningxin Chen, and Jian Lu.

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

  • Planetary-gear-support bearing test rig design [microform] / by J.W. Rosenlieb.

    • Text
    • King of Prussia, Penn. : SKF Industries : [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1985]
    • 1985

  • Influence of tooth profile modification on spur gear dynamic tooth strain [microform] / Fred B. Oswald and Dennis P. Townsend.

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

  • Experimental and analytical assessment of the thermal behavior of spiral bevel gears [microform] / Robert F. Handschuh and Thomas P. Kicher.

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

  • Bending strength model for internal spur gear teeth [microform] / M. Savage and K.L. Rubadeux and H.H. Coe.

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

  • A basis for solid modeling of gear teeth with application in design and manufacture [microform] / Ronald L. Huston ... [et al.].

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

  • Local synthesis and tooth contact analysis of face-milled, uniform tooth height spiral bevel gears [microform] / F.L. Litvin and A.G. Wang.

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

  • Detecting tooth damage in geared drive trains [microform] / Philip R. Nachtsheim.

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

  • New methods for improved double circular-arc helical gears [microform] / Faydor L. Litvin and Jian Lu.

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

  • Computerized simulation of meshing of conventional helical involute gears and modification of geometry [microform] / F.L. Litvin ... [et al.].

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

  • Balancing dynamic strength of spur gears operated at extended center distance [microform] / Hsiang Hsi Lin ... [et al.].

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

  • Dynamic forces in spur gears--measurement, prediction, and code validation [microform] / Fred B. Oswald ... [et al.].

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

  • Computerized design and analysis of face-milled, uniform tooth height, low-noise spiral bevel gear drives [microform] : under grant NAG3-1607 / F.L. Litvin and X. Zhao.

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

  • Evaluation of a vibration diagnostic system for the detection of spiral bevel gear pitting failures [microform] / Dennis P. Townsend and James J. Zakrajsek ; Robert F. Handschuh.

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

  • Effect of rim thickness on gear crack propagation path [microform] / David G. Lewicki and Roberto Ballarini.

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

  • Three-dimensional gear crack propagation studies [microform] / David G. Lewicki ... [et al.].

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

  • Development of a model based technique for gear diagnostics using the Wigner-Ville method [microform] : final report on NASA project NAG 3-1376 / by F. Choy, A. Xu, V. Polyshchuk.

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

  • Measurement of gear tooth dynamic friction [microform] / Brian Rebbechi ; Fred B. Oswald and Dennis P. Townsend.

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

  • Development of gear technology and theory of gearing [microform] / Faydor L. Litvin.

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

  • Computerized generation and simulation of meshing of modified spur and helical gears manufactured by shaving [microform] / Faydor L. Litvin ... [et al.].

    • Text
    • [Cleveland, Ohio] : National Aeronautics and Space Administration, Glenn Research Center ; Hanover, MD : Available from NASA Center for Aerospace Information, [2001]
    • 2001
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS30015

  • Local synthesis and tooth contact analysis of face-milled spiral bevel gears [microform] / Faydor L. Litvin and Yi Zhang.

    • 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, 1991.
    • 1991

  • Computerized inspection of gear tooth surfaces [microform] / Faydor L. Litvin ... [et al.].

    • Text
    • [Washington, D.C.] : National Aeronautics and Space Administration ; [St. Louis, Mo.] : US Army Aviation Systems Command ; [Springfield, Va. : For sale by the National Technical Information Service, 1989?]
    • 1989
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS61914

  • A basis for solid modeling of gear teeth with application in design and manufacture [microform] / Ronald L. Huston ... [et al.].

    • Text
    • [Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center ; Springfield, Va. : National Technical Information Service, distributor, 1992]
    • 1992
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS62395

  • Determination of real machine-tool settings and minimization of real surface deviation by computerized inspection [microform] / Faydor L. Litvin, Chihping Kuan, and Yi Zhang.

    • 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
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS67014

  • Generation and tooth contact analysis of spiral bevel gears with predesigned parabolic functions of transmission errors [microform] / Faydor L. Litvin and Hong-Tao Lee ; prepared for Propulsion Directorate, USAARTA-AVSCOM, and NASA Lewis Research Center.

    • 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], 1989.
    • 1989
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS69895

  • Non-linear dynamic analysis of geared systems. Part II, final report [microform] / Rajendra Singh, Donald R. Houser, and Ahmet Kahraman.

    • Text
    • [Columbus, Ohio] : The Ohio State University, Dept. of Mechanical Engineering ; Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, [1990]
    • 1990
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS69738

  • Generation of spiral bevel gears with zero kinematical errors and computer aided tooth contact analysis [microform] / Faydor L. Litvin, ... [et al.].

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

  • Topology of modified helical gears [microform] / F.L. Litvin ... [et al.] ; prepared for the 5th International Power Transmission and Gearing Conference sponsored by the American Society of Mechanical Engineers, Chicago, Illinois, April 24-27, 1989.

    • Text
    • [Washington, D.C.] : National Aeronautics and Space Administration ; [St. Louis, Mo.] : US Army Aviation Systems Command ; [Springfield, Va. : For sale by the National Technical Information Service, 1989]
    • 1989
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS93265

  • Planetary gearbox fault detection using vibration separation techniques / David G. Lewicki ... [and others] ; prepared for the 67th Annual Forum and Technology Display (Forum 67) sponsored by the American Helicopter Society (AHS), Virginia Beach, Virginia, May 3-5, 2011.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, [2011]
    • 2011
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo22700

  • Investigation of sideband index response to prototype gear tooth damage / Paula J. Dempsey.

    • Text
    • Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, November 2013.
    • 2013-11
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo54970

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