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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
0 resources
Advanced Rotorcraft Transmission (ART) Program [microform] : Boeing helicopters status report / Joseph W. Lenski, Jr. and Mark J. Valco.
Text
[Washington, DC] : 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, 1991?]
1991
0 resources
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
0 resources
Gearbox vibration diagnostic analyzer [microform] : final report.
Text
Bedford, MA : Technology Integration ; [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1992]
1992
0 resources
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
0 resources
Efficiency study comparing two helicopter planetary reduction stages [microform] / Timothy L. Krantz and Robert F. Handschuh.
Text
[Washington, D.C.] : NASA ; [Cleveland, Ohio] : US Army Aviation Systems Command, Aviation R&T Activity ; [Springfield, Va. : For sale by the National Technical Information Service, 1990?]
1990
0 resources
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
0 resources
Cost benefit analysis of a 9-centistoke lubricant for helicopter transmissions [microform] : under contract NAS2-14118 / Thomas A. Cook and Michelle A. Consolini.
Text
[Washington, DC] : National Aeronautics and Space Administration ; [Springfield, Va. : National Technical Information Service, distributor, 1997]
1997
0 resources
Advanced Rotorcraft Transmission Program (A.R.T.) [microform] : final report / Joseph W. Lenski, Jr.
Text
[Washington, DC] : National Aeronautics and Space Administration ; [Springfield, Va. : National Technical Information Service, distributor, 1995]
1995
0 resources
Meshing of a spiral bevel gearset with 3D finite element analysis [microform] / George D. Bibel and Robert Handschuh.
Text
[Washington, DC : National Aeronautics and Space Administration : U.S. Army Research Laboratory ; Springfield, Va. : National Technical Information Service, distributor, 1996]
1996
0 resources
Evaluation of navy 9 cst oil in Bell helicopter M412 HP gearboxes [microform] / Zachary S. Henry and William R. Stapper.
Text
[Cleveland, Ohio] : National Aeronautics and Space Administration, Lewis Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1998]
1998
0 resources
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
0 resources
Comparison of predicted and measured temperatures of UH-60A helicopter transmission [microform] / Harold H. Coe.
Text
[Washington, D.C.] : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1989.
1989
1 resource
Available online
http://purl.access.gpo.gov/GPO/LPS60001Advanced Rotorcraft Transmission Program [microform] / Robert C. Bill.
Text
[Cleveland, Ohio : Lewis Research Center, 1990]
1990
1 resource
Available online
http://purl.access.gpo.gov/GPO/LPS65734Fiber optic strain sensor for planetary gear diagnostics / Jason S. Kiddy ... [and others].
Text
Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, [2011]
2011
1 resource
Available online
https://purl.fdlp.gov/GPO/gpo24048Validation of helicopter gear condition indicators using seeded fault tests / Paula Dempsey, E. Bruce Brandon.
Text
Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, 2013.
2013
1 resource
Available online
https://purl.fdlp.gov/GPO/gpo45764Integrating condition indicators and usage parameters for improved spiral bevel gear health monitoring / Paula J. Dempsey, Robert F. Handschuh, and Irebert R. Delgado.
Text
Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, June 2013.
2013-6
1 resource
Available online
https://purl.fdlp.gov/GPO/gpo51714Investigation 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/gpo54970Evaluation of MEMS-based wireless accelerometer sensors in detecting gear tooth faults in helicopter transmissions / David G. Lewicki, Nicholas A. Lambert and Robert S. Wagoner.
Text
Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, April 2015.
2015-4
1 resource
Available online
https://purl.fdlp.gov/GPO/gpo59970No results found from Digital Research Books Beta
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