Research Catalog
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Displaying 1-26 of 26 results
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
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
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/LPS93265Electric vehicle propulsion alternatives [microform] / Richard R. Secunde and Richard M. Schuh, and Raymond F. Beach (National Aeronautics and Space Administration, Lewis Research Center) ; prepared for U.S. Department of Energy ... Office of Vehicle and Engine R&D.
- Text
- [Washington, D.C.] : U.S. Dept. of Energy ; [Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, 1983]
- 1983
Hex ball torque test [microform] / by B. A. Robinson and C. L. Foster.
- Text
- [Marshall Space Flight Center, Ala.?] : National Aeronautics and Space Administration, George C. Marshall Space Flight Center, [1986]
- 1986
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/gpo22700Fiber 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/gpo24048Variable-speed simulation of a dual-clutch gearbox tiltrotor driveline / Hans DeSmidt ... [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, [2012]
- 2012
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo27500Estimation of dynamic rotor loads for the rotor systems research aircraft : methodology development and validation / R. W. Du Val and M. Bahrami.
- Text
- Mountain View, Calif. : Advanced Rotorcraft Technology, Inc. ; Moffett Field, Calif. : National Aeronautics and Space Administration Ames Research Center, [1985]
- 1985
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo27761Estimation of dynamic rotor loads for the rotor systems research aircraft [microform] : methodology development and validation / R. W. Du Val and M. Bahrami.
- Text
- Mountain View, Calif. : Advanced Rotorcraft Technology. Inc. ; Moffett Field, Calif. : National Aeronautics and Space Administration Ames Research Center, [1985]
- 1985
Continued evaluation of gear condition indicator performance on rotorcraft fleet / Irebert R. Delgado [and three others].
- Text
- Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, 2013.
- 2013
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo51667Integrating 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/gpo51714Characterization and comparison of vibration transfer paths in a helicopter gearbox and a fixture mounted gearbox / Anwarul Islam [and three others].
- Text
- Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, September 2013.
- 2013-9
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo52879Study and sub-system optimization of propulsion and drive systems for the Large Civil TiltRotor (LCTR2) rotorcraft / Mark Robuck [and four others].
- Text
- Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, December 2013.
- 2013-12
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo53602Comprehensive modeling and analysis of rotorcraft variable speed propulsion system with coupled engine/transmission/rotor dynamics / Hans A. DeSmidt [and three others].
- Text
- Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, May 2013.
- 2013-5
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo53815High fidelity CFD analysis and validation of rotorcraft gearbox aerodynamics under operational and oil-out conditions : final report / Robert F. Kunz.
- Text
- Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, July 2014.
- 2014-7
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo54826Test facility simulation results for aerospace loss-of-lubrication of spur gears / Robert F. Handschuh and Lucas J. Gargano.
- Text
- Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, October 2014.
- 2014-10
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo57993Evaluation 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/gpo59970Investigation of gearbox vibration transmission paths on gear condition indicator performance / Paula J. Dempsey [and three others]
- Text
- Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, December 2013.
- 2013-12
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo64624Computerized design and generation of gear drives with a localized bearing contact and a low level of transmission errors / F. Litvin [and six others]
- Text
- Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center ; Adelphi, Maryland : U.S. Army Research Laboratory, May 1996.
- 1996-5
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo69208Effects of planetary gear ratio on mean service life / M. Savage, K.L. Rubadeux and H.H. Coe.
- Text
- Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, July 1996.
- 1996-7
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo69488Dynamic analysis of spur gear transmissions (DANST) : PC version 3.00 user manual / Fred B. Oswald, Hsiang Hsi Lin, Irebert R. Delgado.
- Text
- Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center ; Adelphi, Maryland : U.S. Army Research Laboratory, August 1996.
- 1996-8
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo70049Improving the performance of the structure-based connectionist network for diagnosis of helicopter gearboxes / Vinay B. Jammu and Kourosh Danai, David G. Lewicki.
- Text
- Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center : U.S. Army Research Laboratory, January 1997.
- 1997-1
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo72098Gear and transmission research at NASA Lewis Research Center / Dennis P. Townsend.
- Text
- Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center : U.S. Army Research Laboratory, April 1997.
- 1997-4
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo72116Vibration propagation of gear dynamics in a gear-bearing-housing system using mathematical modeling and finite element analysis / Robert G. Parker [and three others].
- Text
- Cleveland, Ohio : National Aeronautics and Space Administration, Glenn Research Center, 2012.
- 2012
- 1 Resource
Available Online
https://purl.fdlp.gov/GPO/gpo32520
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