Publications

Mechanical Components Branch Publications

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Branch Reports by Year:

2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995

Branch Reports by Topic:

Historical Reference Publications

"Gearing"
John J. Coy, Dennis P. Townsend and Erwin V. Zaretsky
NASA Reference Publication 1152, 1985 (Note: Large file 6.1 Mb)

"Design of Traction Drives"
Stuart H. Loewenthal and Erwin V. Zaretsky
NASA RP-1154, 1985 (Large file 35 Mb)

"Tribology: The Story of Lubrication and Wear"
Donald H. Buckley, William R. Jones, Jr., Harold E. Sliney, Erwin V. Zaretsky, Dennis P. Townsend, and Stuart H. Loewenthal
NASA TM-101430, 1985 (File size 7.5 Mb)

"Rolling-Element Bearings"
Bernard J.Hamrock and William J. Anderson
NASA-RP-1105, 1983 (File size 5 Mb) (See note below.)

"Advanced bearing technology"
Anderson, W. J.; Bisson, E. E.
NASA-SP-38, 1964 (Large file 28 Mb) (See note below.)

"Fastener Design Manual"
Richard T. Barrett
NASA RP-1228, 1990 (Large file 9.4 MB)

"NASA Space Mechanisms Handbook and Reference Guide"
Robert Fusaro, editor
NASA/TP-1999-206988, 1999 (ITAR restricted. Limited to US only. Not downloadable.)

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2008 Reports Go to Top

"A Review of Engine Seal Performance and Requirements for Current and Future Army Engine Platforms"
Delgado, Irebert, R.; Proctor, Margaret, P.
NASA/TM-2008-215161; ARL-TR-4201; AIAA-2007-5734, March, 2008 (File size 5 Mb)

"Characteristics of Elastomer Seals Exposed to Space Environments"
Daniels, Christopher, C.; de Groh, Henry, C., III; Dunlap, Patrick, H., Jr.; Finkbeiner, Joshua, R.; Steinetz, Bruce, M.; Bastrzyk, Marta, B.; Oswald, Jay, J.; Banks, Bruce, A.; Dever, Joyce, A.; Miller, Sharon, K.; Waters, Deborah, L.
NASA/TM-2008-215005; AIAA-2007-5741, January, 2008 (File size 2 Mb)

"Probabilistic Analysis of Space Shuttle Body Flap Actuator Ball Bearings"
Oswald, Fred, B.; Jett, Timothy, R.; Predmore, Roamer, E.; Zaretsky, Erwin, V.
NASA/TM-2008-215057, January, 2008 (File size 3 Mb)

"Permanent Magnetic Bearing for Spacecraft Applications"
Morales, Wilfredo; Fusaro, Robert; Kascak, Albert
NASA/TM-2003-211996-REV1, January, 2008 (File size 1 Mb)

"Relation Between Hertz-Life Exponent, Ball-Race Conformity, and Ball Bearing Life"
Zaretsky, Erwin, V.; Poplawski, Joseph, V.; Root, Lawrence, E.
NASA/TM-2008-214265, January, 2008 (File size 1 Mb)

"Permanent Magnetic Bearing for Spacecraft Applications"
Morales, Wilfredo; Fusaro, Robert; Kascak, Albert
NASA/TM-2003-211996-REV1, January, 2008 (File size 1 Mb)

"Experimental Investigation of Elastomer Docking Seal Compression Set, Adhesion, and Leakage"
Daniels, Christopher, C.; Oswald, Jay, J.; Bastrzyk, Marta, B.; Smith, Ian; Dunlap, Patrick, H., Jr.; Steinetz, Bruce, M.
NASA/TM-2008-215023; AIAA-2007-6197, January, 2008 (File size 4 Mb)

2007 Reports Go to Top

"Wear of Spur Gears Having a Dithering Motion and Lubricated With a Perfluorinated Polyether Grease"
Krantz, Timothy; Oswald, Fred; Handschuh, Robert
NASA/TM-2007-215008; ARL-TR-4124, December, 2007 (File size 2 Mb)

"Pitting and Bending Fatigue Evaluations of a New Case-Carburized Gear Steel"
Krantz, Timothy; Tufts, Brian
NASA/TM-2007-215009; ARL-TR-4123, December, 2007 (File size 2 Mb)

"Further Characterization of an Active Clearance Control Concept"
Taylor, Shawn, C.; Steinetz, Bruce, M.; Oswald, Jay, J.
NASA/TM-2007-215039; AIAA-2007-5739, December, 2007 (File size 1 Mb)

"Feasibility Study of Vapor-Mist Phase Reaction Lubrication Using a Thioether Liquid"
Morales, Wilfredo; Handschuh, Robert, F.; Krantz, Timothy, L.
NASA/TM-2007-215035, December, 2007 (File size 1 Mb)

"Evaluation of a Low-Noise Formate Spiral-Bevel Gear Set"
Lewicki, David, G.; Woods, Ron, L.; Litvin, Faydor, L.; Fuentes, Alfonso
NASA/TM-2007-215032; ARL-TR-4125, December, 2007 (File size 1 Mb)

"Determination of Turboprop Reduction Gearbox System Fatigue Life and Reliability"
Zaretsky, Erwin, V.; Lewicki, David, G.; Savage, Michael; Vlcek, Brian, L.
NASA/TM-2007-215019, November, 2007 (File size 1 Mb)

"Full-Scale System for Quantifying Leakage of Docking System Seals for Space Applications"
Dunlap, Patrick, H., Jr.; Daniels, Christopher, C.; Steinetz, Bruce, M.; Erker, Arthur, H.; Robbie, Malcolm, G.; Wasowski, Janice, L.; Drlik, Gary, J.; Tong, Michael, T.; Penney, Nicholas
NASA/TM-2007-215024; AIAA-2007-5742, October, 2007 (File size 3 Mb)

"An Evaluation of High Temperature Airframe Seals for Advanced Hypersonic Vehicles"
DeMange, Jeffrey, J.; Dunlap, Patrick, H.; Steinetz, Bruce, M.; Drlik, Gary, J.
NASA/TM-2007-215043; AIAA-2007-5743, October, 2007 (File size 1 Mb)

"2006 NASA Seal/Secondary Air System Workshop"
Editor(s): Steinetz, Bruce, M.; Hendricks, Robert, C.; Delgado, Irebert
NASA/CP-2007-214995-VOL1, October, 2007 (Very large file, size 185 Mb)

"Reexamination of Ball-Race Conformity Effects on Ball Bearing Life"
Zaretsky, Erwin, V.; Poplawski, Joseph, V.; Root, Lawrence, E.
NASA/TM-2007-213635, September, 2007 (File size 2 Mb)

"RDS-21 Face-Gear Surface Durability Tests"
Lewicki, David, G.; Heath, Gregory, F.; Filler, Robert, R.; Slaughter, Stephen, C.; Fetty, Jason
NASA/TM-2007-214970; ARL-TR-4089, September, 2007 (File size 3 Mb)

"Vibration Transmission Through Bearings With Application to Gearboxes"
Fleming, David, P.
NASA/TM-2007-214954; ISCORMA-4-510, July, 2007 (File size 1 Mb)

"Stability Analysis of a High-Speed Seal Test Rotor With Marginal and Extended Squeeze-Film Dampers--Theoretical and Experimental Results"
Proctor, Margaret, P.; Gunter, Edgar, J.
NASA/TM-2007-214849, July, 2007 (File size 3 Mb)

"Investigation of Low-Cycle Bending Fatigue of AISI 9310 Steel Spur Gears"
Handschuh, Robert, F.; Krantz, Timothy, L.; Lerch, Bradley, A.; Burke, Christopher, S.
NASA/TM-2007-214914; ARL-TR-4100, July, 2007 (File size 1 Mb)

"Investigation of Current Methods to Identify Helicopter Gear Health"
Dempsey, Paula, J.; Lewicki, David, G.; Le, Dy, D.
NASA/TM-2007-214664, July, 2007 (File size 1 Mb)

"Operational Condition and Superfinishing Effect on High-Speed Helical Gearing System Performance"
Handschuh, R.; Kilmain, C.; Ehinger, R.
NASA/TM-2007-214696; ARL-TR-4099, June, 2007 (File size 1 Mb)

"Model Specification for Rework of Aircraft Engine, Power Transmission, and Accessory/Auxiliary Ball and Roller Bearings"
Zaretsky, Erwin, V.; Branzai, Emanuel, V.
NASA/TP-2007-214463, March, 2007 (File size 1 Mb)

"Design of Oil-Lubricated Machine for Life and Reliability"
Erwin V. Zaretsky
NASA TM-2007-214362, January, 2007 (File size 1 Mb)

2006 Reports Go to Top

"Operational Influence on Thermal Behavior of High-Speed Helical Gear Trains"
Robert F. Handschuh and Charles J. Kilmain
NASA TM-2006-214344, ARL-TR-3969, November 2006 (File size 2 Mb)

"High Temperature Evaluation of an Active Clearance Control System Concept"
Shawn C. Taylor, Bruce M. Steinetz, and Jay J. Oswald
NASA TM-2006-214464, AIAA-2006-4750, November 2006 (File size 1 Mb)

"Apollo Seals: A Basis for the Crew Exploration Vehicle Seals"
Joshua R. Finkbeiner, Patrick H. Dunlap, Jr., Bruce M. Steinetz, and Christopher C. Daniels
NASA TM-2006-214372, AIAA-2006-5259, November 2006 (File size 2 Mb)

"Performance Evaluations of Ceramic Wafer Seals"
Patrick H. Dunlap, Jr., Jeffrey J. DeMange, and Bruce M. Steinetz
NASA TM-2006-214416, AIAA-2006-4934, November 2006 (File size 1 Mb)

"Further Investigations of High Temperature Knitted Spring Tubes for Advanced Control Surface Seal Applications"
Shawn C. Taylor, Jeffrey J. DeMange, Patrick H. Dunlap, Jr., and Bruce M. Steinetz
NASA TM-2006-214348, AIAA-2005-4154, November 2006 (File size 5 Mb)

"Improved Seals for High Temperature Airframe Applications"
Jeffrey J. DeMange, Patrick H. Dunlap, and Bruce M. Steinetz
NASA TM-2006-214465, AIAA-2006-4935, October 2006 (File size 3 Mb)

"Transient Response of Rotor on Rolling-Element Bearings with Clearance"
David P. Fleming, Brian T. Murphy, Jerzy T. Sawicki, and J.V. Poplawski
NASA TM-2006-214408, October 2006 (File size 1 Mb)

"2005 NASA Seal/Secondary Air System Workshop"
Bruce M. Steinetz and Robert C. Hendricks, editors
NASA CP-2006-214383-VOL1, October 2006 (File size 30 Mb)

"Continued Investigation of Leakage and Power Loss Test Results for Competing Turbine Engine Seals"
Irebert R. Delgado and Margaret P. Proctor
NASA TM-2006-214420, ARL-MR-0643, AIAA-2006-4754, September 2006 (File size 5 Mb)

"Sealing in Turbomachinery"
Raymond E. Chupp, Robert C. Hendricks, Scott B. Lattime, and Bruce M. Steinetz
NASA TM-2006-214341, August 2006 (File size 19 Mb)

"A Resonant Synchronous Vibration Based Approach for Rotor Imbalance Detection"
Huageng Luo, Hector Rodriguez, Darren Hallman, and David G. Lewicki
NASA TM-2006-214335, AIAA-2006-1966, ARL-TR-3908, August 2006 (File size 3 Mb)

"Seals/Secondary Fluid Flows Workshop 1997"
Robert C. Hendricks, editor
NASA CP-2006-214329-VOL1, August 2006 (File size 384 Mb -- large file)

"Seals/Secondary Fluid Flows Workshop 1997 -- HSR Engine Special Session"
Robert C. Hendricks, editor
NASA CP-2006-214329-VOL2, May 2006 (File size 23 Mb -- large file)

"Tapered Roller Bearing Damage Detection Using Decision Fusion Analysis"
Paula J. Dempsey, Gary Kreider, and Thomas Fichter
NASA TM-2006-214380, July 2006 (File size 6 Mb)

"Gas Seal Pad With Herringbone-Grooved Rotor-Stiffness and Load Capacity"
David P. Flemming
NASA TM-2006-214333, May 2006 (File size 1 Mb)

"Phosphate Reactions as Mechanisms of High-Temperature Lubrication"
Anitha Nagarajan, Carolina Garrido, Jorge E. Gatica, and Wilfredo Morales
NASA TM-2006-214060, May 2006 (File size 0.7 Mb)

"Investigation of Tapered Roller Bearing Damage Detection Using Oil Debris Analysis"
Paula J. Dempsey, Gary Kreider, and Thomas Fichter
NASA TM-2006-214082, February 2006 (File size 7 Mb)

"Rotorcraft Health Management Issues and Challenges"
James J. Zakrajsek, Paula J. Dempsey, Edward M. Huff, Michael Augustin, Robab Safa-Bakhsh, Alan Duke, Piet Ephraim, Paul Grabil, and Harry J. Decker
NASA TM-2006-214022, February 2006 (File size 0.3 Mb)

"Current Research Activities in Drive System Technology in Support of the NASA Rotorcraft Program"
Robert F. Handschuh and James J. Zakrajsek
NASA TM-2006-214052, ARL-TR-37, January 2006 (File size 5 Mb)

2005 Reports Go to Top

"Shuttle Rudder/Speed Brake Power Drive Unit (PDU) Gear Scuffing Tests With Flight Gears"
Margaret P. Proctor, Fred B. Oswald, and Timothy L. Krantz
NASA TM-2005-214092, December 2005 (File size 20 Mb)

"Design of Gear Drives With High Gear Ratio"
Faydor L. Litvin, Alfonso Fuentes, Daniele Vecchiato, and Ignacio Gonzalez-Perez
NASA CR-2005-214002, ARL-CR-0569, December 2005 (File size 8 Mb)

"Evaluation of an Active Clearance Control System Concept"
Bruce M. Steinetz, Scott B. Lattime, Shawn Taylor, Jonathan A. DeCastro, Jay Oswald, and Kevin J. Melcher
NASA TM-2005-213856, AIAA-2005-3989, November 2005 (File size 5 Mb)

"Design Study of Wafer Seals for Future Hypersonic Vehicles"
Patrick H. Dunlap, Jr., Joshua R. Finkbeiner, Bruce M. Steinetz, and Jeffrey J. DeMange
NASA TM-2005-213858, AIAA-2005-4153, October 2005 (File size 0.7 Mb)

"2004 NASA Seal/Secondary Air System Workshop"
Bruce M. Steinetz and Robert C. Hendricks, editors
NASA CP-2005-213655-VOL1, October 2005 (File size 0.5 Mb)

"Grainex Mar-M 247 Turbine Disk Life Study for NASA's High Temperature High Speed Turbine Seal Test Facility"
Irebert R. Delgado
NASA TM-2005-213873, ARL-TR-3528, October 2005 (File size 25 Mb)

"An Experimental Investigation of the Influence of the Lubricant Viscosity and Additives on Gear Wear"
Timothy L. Krantz and Ahmet Kahraman
NASA TM-2005-213956, ARL-TR-3126, October 2005 (File size 3 Mb)

"The Influence of Roughness on Gear Surface Fatigue"
Timothy L. Krantz
NASA TM-2005-213958, ARL-TR-3134, October 2005 (File size 9 Mb)

"A Study of Spur Gears Lubricated With Grease-Observations From Seven Experiments"
Timothy L. Krantz and Robert F. Handschuh
NASA TM-2005-213957, ARL-TR-3159, September 2005 (File size 25 Mb)

"Investigations of Shuttle Main Landing Gear Door Environmental Seals"
Joshua Finkbeiner, Pat Dunlap, Bruce Steinetz, Jeff DeMange, and Daniel Newswander
NASA TM-2005-213860, AIAA-2005-4155, September 2005 (File size 6 Mb)

"Nonlinear Whirl Response of a High-Speed Seal Test Rotor With Marginal and Extended Squeeze-Film Dampers"
Margaret P. Proctor and Edgar J. Gunter
NASA TM-2005-213808, August 2005 (File size 6 Mb)

"Hybrid Bearing Prognostic Test Rig"
Paula J. Dempsey, Joseph M. Certo, Robert F. Handschuh, and Florin Dimofte
NASA TM-2005-213597, ARL-TR-3454, August 2005 (File size 1 Mb)

"Experimental Study of the Influence of Speed and Load on Thermal Behavior of High-Speed Helical Gear Trains"
R. Handschuh and C. Kilmain
NASA TM-2005-213632, ARL-TR-3488, July 2005 (File size 1 Mb)

"Unbalance Response Prediction for Accelerating Rotors With Load-Dependent Nonlinear Bearing Stiffness"
David P. Fleming, Jerzy T. Sawicki, and J.V. Poplawski
NASA TM-2005-213801, June 2005 (File size 0.3 Mb)

"Effect of Rolling Bearing Refurbishment and Restoration on Bearing Life and Reliability"
Erwin V. Zaretsky and Emanuel V. Branzai
NASA TM-2005-212966, May 2005 (File size 2 Mb)

"Effect of Silicon Nitride Balls and Rollers on Rolling Bearing Life"
Erwin V. Zaretsky, Brian L. Vlcek, and Robert C. Hendricks
NASA TM-2005-213061, TRIB2004-64246, April 2005 (File size 0.4 Mb)

"Turbomachine Interface Sealing"
Robert C. Hendricks, Raymond E. Chupp, Scott B. Lattime, and Bruce M. Steinetz
NASA TM-2005-213633, April 2005 (File size 5 Mb)

"Exploration Rover Concepts and Development Challenges"
James J. Zakrajsek, David B. McKissock, Jeffrey M. Woytach, June F. Zakrajsek, Fred B. Oswald, Kelly J. McEntire, Gerald M. Hill, Phillip Abel, Dennis J. Eichenberg, and Thomas W. Goodnight
NASA TM-2005-213555, AIAA-2005-2525, March 2005 (File size 2 Mb)

"Face Gear Drive With Helical Involute Pinion: Geometry, Generation by a Shaper and a Worm, Avoidance of Singularities and Stress Analysis"
Faydor L. Litvin, Alfonso Fuentes, Ignacio Gonzalez-Perez, Alessandro Piscopo, and Paolo Ruzziconi
NASA CR-2005-213443, ARL-CR-557, February 2005 (File size 3 Mb)

2004 Reports Go to Top

"Transmission Bearing Damage Detection Using Decision Fusion Analysis"
Paula J. Dempsey, David G. Lewicki, and Harry J. Decker
NASA TM-2004-213382, ARL-TR-3328, November 2004 (File size 0.4 Mb)

"On the Development of a Unique Arc Jet Test Apparatus for Control Surface Seal Evaluations"
Joshua R. Finkbeiner, Patrick H. Dunlap, Jr., Bruce M. Steinetz, Malcolm Robbie, Gus Baker, and Arthur Erker
NASA TM-2004-213204, AIAA-2004-3891, October 2004 (File size 4 Mb)

"2003 NASA Seal/Secondary Air System Workshop"
Bruce M. Steinetz and Robert C. Hendricks, editors
NASA CP-2004-212963-VOL1, September 2004 (File size 42 Mb)

"Evaluation of High Temperature Knitted Spring Tubes for Structural Seal Applications"
Shawn C. Taylor, Jeffrey J. DeMange, Patrick H. Dunlap, Jr., and Bruce M. Steinetz
NASA TM-2004-213183, AIAA-2004-3890, September 2004 (File size 6.6 Mb)

"Modeling and Evaluation of Canted Coil Springs as High Temperature Seal Preloading Devices"
Jay J. Oswald, Robert L. Mullen, Patrick H. Dunlap, Jr., and Bruce M. Steinetz
NASA TM-2004-213189, AIAA-2004-3889, September 2004 (File size 3 Mb)

"Further Investigations of Hypersonic Engine Seals"
Patrick H. Dunlap, Jr., Bruce M. Steinetz, and Jeffrey J. DeMange
NASA TM-2004-213188, AIAA-2004-3887, August 2004 (File size 1.7 Mb)

"Turbomachine Sealing and Secondary Flows
Part 1-Review of Sealing Performance, Customer, Engine Designer, and Research Issues"
R.C. Hendricks, B.M. Steinetz, and M.J. Braun
NASA TM-2004-211991-PART1, July 2004 (File size 7 Mb)

"Turbomachine Sealing and Secondary Flows
Part 2-Review of Rotordynamics Issues in Inherently Unsteady Flow Systems With Small Clearances"
R.C. Hendricks, L.T. Tam, and A. Muszynska
NASA TM-2004-211991-PART2, July 2004 (File size 6 Mb)

"Turbomachine Sealing and Secondary Flows
Part 3-Review of Power-Stream Support, Unsteady Flow Systems, Seal and Disk Cavity Flows, Engine Externals, and Life and Reliability Issues"
R.C. Hendricks, B.M. Steinetz, E.V. Zaretsky, M.M. Athavale, and A.J. Przekwas
NASA TM-2004-211991-PART3, July 2004 (File size 5 Mb)

"New Design and Improvement of Planetary Gear Trains"
Faydor L. Litvin, Alfonso Fuentes, Daniele Vecchiato, and Ignacio Gonzalez-Perez
NASA CR-2004-213101, ARL-CR-0540, July 2004 (File size 1.6 Mb)

"Current Status of Hybrid Bearing Damage Detection"
Paula J. Dempsey, Joseph M. Certo, and Wilfredo Morales
NASA TM-2004-212882, ARL-TR-3119, June 2004 (File size 0.8 Mb)

"Investigation of Gear and Bearing Fatigue Damage Using Debris Particle Distributions"
Paula J. Dempsey, David G. Lewicki, and Harry J. Decker
NASA TM-2004-212883, ARL-TR-3133, May 2004 (File size 5 Mb)

"Planetary Transmission Diagnostics"
Paul D. Samuel, Joseph K. Conroy, and Darryll J. Pines
NASA CR-2004-213068, May 2004 (Large file 30 Mb)

"Leakage and Power Loss Test Results for Competing Turbine Engine Seals"
Margaret P. Proctor and Irebert R. Delgado
NASA TM-2004-213049, GT2004-53935, April 2004 (File size 1 Mb)

"Strain-Life Assessment of Grainex Mar-M 247 for NASA's Turbine Seal Test Facility"
Irebert R. Delgado, Gary R. Halford, Bruce M. Steinetz, and Clare M. Rimnac
NASA TM-2004-212985, ARL-TR-3178, GT2004-53939, April 2004 (File size 1 Mb)

"Nonlinear Oscillations and Flow of Gas Within Closed and Open Conical Resonators"
Christopher Daniels, Joshua Finkbeiner, Bruce Steinetz, Xiaofan Li, and Ganesh Raman
NASA/TM-2004-212902, AIAA-2004-0677, February 2004 (File size 0.5 Mb)

"Approximate Solution for Choked Flow in Gas Seal Pads"
David P. Fleming
NASA TM-2004-212956, ISROMAC10-2004-110, February 2004 (File size 0.6 Mb)

"Advanced Control Surface Seal Development for Future Space Vehicles"
J.J. DeMange, P.H. Dunlap, Jr., and B.M. Steinetz
NASA TM-2004-212898, January 2004 (File size 0.8 Mb)

"Conversion Coatings for Aluminum Alloys by Chemical Vapor Deposition Mechanisms"
John T. Reye, Lisa S. McFadden, Jorge E. Gatica, and Wilfredo Morales
NASA TM-2004-212905, (File size 1 Mb)

"High Temperature Propulsion System Structural Seals for Future Space Launch Vehicles"
Patrick H. Dunlap, Jr., Bruce M. Steinetz, and Jeffrey J. DeMange
NASA TM-2004-212907, January 2004 (File size 2 Mb)

"Mechanical Components Branch Test Facilities and Capabilities"
Fred B. Oswald
NASA TM-2004-212722, January 2004 (File size 4 Mb)

2003 Reports Go to Top

"Monte Carlo Simulation of Sudden Death Bearing Testing"
Brian L. Vlcek, Robert C. Hendricks, and Erwin V. Zaretsky
NASA TM-2003-212506, STLE-2003-121, December 2003 (File size 0.5 Mb)

"Preliminary Comparison of Experimental and Analytical Efficiency Results of High-Speed Helical Gear Trains"
Robert F. Handschuh and Charles J. Kilmain
NASA TM-2003-212371, ARL-TR-3019, DETC2003/PTG-48116, September 2003 (File size 1 Mb)

"2002 NASA Seal/Secondary Air System Workshop"
Bruce M. Steinetz and Robert C. Hendricks, editors
NASA CP-2003-212458-VOL1, September 2003 (Large file 66 Mb)

"Effect of Individual Component Life Distribution on Engine Life Prediction"
Erwin V. Zaretsky, Robert C. Hendricks, and Sherry M. Soditus
NASA TM-2003-212532, August 2003 (File size 1.5 Mb)

"Determination of Rolling-Element Fatigue Life From Computer Generated Bearing Tests"
Brian L. Vlcek, Robert C. Hendricks, and Erwin V. Zaretsky
NASA TM-2003-212186, August 2003 (File size 2 Mb)

"Threshold Assessment of Gear Diagnostic Tools on Flight and Test Rig Data"
Paula J. Dempsey, Marianne Mosher, and Edward M. Huff
NASA TM-2003-212220-REV1, August 2003 (File size 4 Mb)

"Increased Surface Fatigue Lives of Spur Gears by Application of a Coating"
Timothy L. Krantz, Clark V. Cooper, Dennis P. Townsend, and Bruce D. Hansen
NASA TM-2003-212463, ARL-TR-2971, DETC2003-48114, August 2003 (File size 2 Mb)

"Unbalance Response Prediction for Rotors on Ball Bearings Using Speed and Load Dependent Nonlinear Bearing Stiffness"
David P. Fleming and J.V. Poplawski
NASA TM-2003-212527, August 2003 (File size 0.3 Mb)

"Test Rig for Evaluating Active Turbine Blade Tip Clearance Control Concepts"
Scott B. Lattime, Bruce M. Steinetz, and Malcolm G. Robbie
NASA TM-2003-212533, AIAA-2003-4700, July 2003 (File size 3 Mb)

"Toward an Improved Hypersonic Engine Seal"
Patrick H. Dunlap, Jr., Bruce M. Steinetz, Jeffrey J. DeMange, and Shawn C. Taylor
NASA TM-2003-212531, AIAA-2003-4834, July 2003 (File size 4 Mb)

"Evaluation of Low-Noise, Improved-Bearing-Contact Spiral Bevel Gears"
David G. Lewicki and Ron L. Wood
NASA TM-2003-212353, ARL-TR-2970, June 2003 (File size 2 Mb)

"Spiral Bevel Pinion Crack Detection in a Helicopter Gearbox"
Harry J. Decker and David G. Lewicki
NASA TM-2003-212327, ARL-TR-2958, June 2003 (File size 1 Mb)

"Modified Involute Helical Gears: Computerized Design, Simulation of Meshing, and Stress Analysis"
Faydor L. Litvin, Alfonso Fuentes, Ignacio Gonzalez-Perez, Luca Carnevali, and Kazumasa Kawasaki
NASA CR-2003-212229, ARL-CR-514, June 2003 (Large file 9 Mb)

"Computerized Design, Generation, Simulation of Meshing and Contact, and Stress Analysis of Formate Cut Spiral Bevel Gear Drives"
Faydor L. Litvin, Alfonso Fuentes, Baxter R. Mullins, and Ron Woods
NASA CR-2003-212336, ARL-CR-525, June 2003 (File size 3 Mb)

"Efficiency of High-Speed Helical Gear Trains"
Robert F. Handschuh and Charles J. Kilmain
NASA TM-2003-212222, ARL-TR-2968, April 2003 (File size 0.9 Mb)

"Effects on Diagnostic Parameters After Removing Additional Synchronous Gear Meshes"
Harry J. Decker
NASA TM-2003-212312, ARL-TR-2933, April 2003 (File size 2 Mb)

"Integrating Oil Debris and Vibration Measurements for Intelligent Machine Health Monitoring"
Paula J. Dempsey
NASA/TM 2003-211307, Mar 2003 (Large file 15 Mb)

"Permanent Magnetic Bearing for Spacecraft Applications"
Wilfredo Morales, Robert Fusaro, and Albert Kascak
NASA TM-2003-211996, March 2003 (File size 0.6 Mb)

"Computation of Pressurized Gas Bearings Using CE/SE Method"
Sorin Cioc, Florin Dimofte, Theo G. Keith, Jr., and David P. Fleming
NASA TM-2003-212110, February 2003 (File size 0.4 Mb)

"Nonlinear Resonant Oscillations of Gas in Optimized Acoustical Resonators and the Effect of Central Blockage"
Xiaofan Li, Joshua Finkbeiner, Ganesh Raman, Christopher Daniels, and Bruce M. Steinetz
NASA TM-2003-212019, AIAA-2003-0368, February 2003 (File size 0.6 Mb)

2002 Reports Go to Top

"New Geometry of Worm Face Gear Drives With Conical and Cylindrical Worms: Generation, Simulation of Meshing, and Stress Analysis"
Faydor L. Litvin, Alessandro Nava, Qi Fan, and Alfonso Fuentes
NASA CR-2002-211895, ARL-CR-0511, November 2002 (Large file 5 Mb)

"Advanced High Temperature Structural Seals"
Charles W. Newquist, Juris Verzemnieks, Peter C. Keller, Michael Rorabaugh, and Mark W. Shorey
NASA CR-2002-211973, October 2002 (Large file 13 Mb)

"2001 NASA Seal/Secondary Air System Workshop"
Bruce M. Steinetz and Robert C. Hendricks, editors
NASA CP-2002-211911-VOL1, October 2002 (Large file 59 Mb)

"Space Mechanisms Technology Workshop"
Fred B. Oswald, editor
NASA CP-2002-211882, September 2002 (Large file 14 Mb)

"Turbine Engine Clearance Control Systems: Current Practices and Future Directions"
Scott B. Lattime and Bruce M. Steinetz
NASA TM-2002-211794, AIAA-2002-3790, September 2002 (File size 1 Mb)

"Transient Vibration Prediction for Rotors on Ball Bearings Using Load-Dependent Non-Linear Bearing Stiffness"
David P. Fleming and J.V. Poplawski
NASA TM-2002-211829, August 2002 (File size 0.2 Mb)

"Spiral Bevel Gear Damage Detection Using Decision Fusion Analysis"
Paula J. Dempsey, Robert F. Handschuh, and Abdollah A. Afjeh
NASA TM-2002-211814, ARL-TR-2744, August 2002 (File size 2 Mb)

"Investigations of Control Surface Seals for Re-Entry Vehicles"
Patrick H. Dunlap, Jr., Bruce M. Steinetz, Donald M. Curry, Jeffrey J. DeMange, H. Kevin Rivers, and Su-Yuen Hsu
NASA TM-2002-211708, AIAA-2002-3941, July 2002 (File size 0.9 Mb)

"High-Speed, High-Temperature Finger Seal Test Results"
Margaret P. Proctor, Arun Kumar, and Irebert R. Delgado
NASA TM-2002-211589, ARL-TR-2781, AIAA-2002-3793, July 2002 (File size 0.8 Mb)

"Predictive Failure of Cylindrical Coatings Using Weibull Analysis"
Brian L. Vlcek, Robert C. Hendricks, and Erwin V. Zaretsky
NASA TM-2002-211381, July 2002 (File size 0.3 Mb)

"Weibull-Based Design Methodology for Rotating Aircraft Engine Structures"
Erwin V. Zaretsky, Robert C. Hendricks, and Sherry Soditus
NASA TM-2002-211348, June 2002 (File size 0.4 Mb)

"Integrating Oil Debris and Vibration Gear Damage Detection Technologies Using Fuzzy Logic"
Paula J. Dempsey and Abdollah A. Afjeh
NASA TM-2002-211126, July 2002 (File size 3 Mb)

"Development of Face Gear Technology for Industrial and Aerospace Power Transmission"
Gregory F. Heath, Robert R. Filler, and Jie Tan
NASA CR-2002-211320, ARL-CR-0485, May 2002 (File size 4 Mb)

"Crack Detection for Aerospace Quality Spur Gears"
Harry J. Decker
NASA TM-2002-211492, ARL-TR-2682, April 2002 (File size 1 Mb)

"Gear Crack Detection Using Tooth Analysis"
Harry J. Decker
NASA TM-2002-211491, ARL-TR-2681, April 2002 (File size 0.8 Mb)

"Preliminary Investigation of the Thermal Behavior of High-Speed Helical Gear Trains"
Robert F. Handschuh and Charles J. Kilmain
NASA TM-2002-211336, ARL-TR-2661, March 2002 (File size 0.5 Kb)

"A Passive Magnetic Bearing Flywheel"
Mark Siebert, Ben Ebihara, Ralph Jansen, Robert L. Fusaro, Wilfredo Morales, Albert Kascak, and Andrew Kenny
NASA TM-2002-211159, IECEC2001-AT-89, February 2002 (File size 0.5 Mb)

"Face Gear Drive With Spur Involute Pinion: Geometry, Generation by a Worm, Stress Analysis"
Faydor L. Litvin, Alfonso Fuentes, Claudio Zanzi, and Matteo Pontiggia
NASA CR-2002-211362, ARL-CR-491, February 2002 (Large file 10 Mb)

"Wave Journal Bearings Under Dynamic Loads"
Florin Dimofte and Robert C. Hendricks
NASA TM-2002-211079, February 2002 (File size 1 Mb)

"Design and Stress Analysis of Low-Noise Adjusted Bearing Contact Spiral Bevel Gears"
Faydor L. Litvin, Alfonso Fuentes, Baxter R. Mullins, and Ron Woods
NASA CR-2002-211344, ARL-CR-486, January 2002 (Large file 7 Mb)

"Procedure for Tooth Contact Analysis of a Face Gear Meshing With a Spur Gear Using Finite Element Analysis"
George Bibel
NASA CR-2002-211277, January 2002 (File size 2 Mb)

"Effect of Bearing Dynamic Stiffness on Gear Vibration"
David P. Fleming
NASA TM-2002-211356, January 2002 (File size 0.1 Mb)

"Software for Statistical Analysis of Weibull Distributions With Application Timothy L. Krantz
to Gear Fatigue Data: User Manual With Verification"
NASA TM-2002-211109, ARL-TR-1338, January 2002 (File size 0.5 Mb)

2001 Reports Go to Top

"Experimental Comparison of Face-Milled and Face-Hobbed Spiral Bevel Gears"
Robert F. Handschuh, Michael Nanlawala, John M. Hawkins, and Danny Mahan
NASA TM-2001-210940, ARL-TR-1104, October 2001 (File size 1 Mb)

"Gear Damage Detection Using Oil Debris Analysis"
Paula J. Dempsey
NASA TM-2001-210936, ARL-TR-1104, October 2001 (File size 0.6 Mb)

"2000 NASA Seal/Secondary Air System Workshop"
Bruce M. Steinetz and Robert C. Hendricks, editors
NASA CP-2001-211208-VOL1, October 2001 (Large File 61 Mb)

"Rotordynamic Influence on Rolling Element Bearing Selection and Operation"
Gilbert K. Queitzsch, Jr., and David P. Fleming
NASA TM-2001-211131, August 2001 (File size 0.4 Mb)

"Comparison Between Oil-Mist and Oil-Jet Lubrication of High-Speed, Small-Bore, Angular-Contact Ball Bearings"
Stanley I. Pinel, Hans R. Signer, and Erwin V. Zaretsky
NASA TM-2001-210462, August 2001 (File size 0.3 Mb)

"Effect of Speed (Centrifugal Load) on Gear Crack Propagation Direction"
David G. Lewicki
NASA TM-2001-211117, ARL-TR-1314, August 2001 (File size 1 Mb

"Gear Crack Propagation Path Studies-Guidelines for Ultra-Safe Design"
David G. Lewicki
NASA TM-2001-211073, ARL-TR-2468, July 2001 (File size 2 Mb)

"Further Investigations of Control Surface Seals for the X-38 Re-Entry Vehicle"
Patrick H. Dunlap, Jr., Bruce M. Steinetz, Donald M. Curry, Charles W. Newquist, and Juris Verzemnieks
NASA TM-2001-210980, AIAA-2001-3628, July 2001 (File size 0.9 Mb)

"Space Mechanisms Technology Workshop"
Fred B. Oswald, editor
NASA CP-2001-210971, June 2001 (File size 4 Mb)

"Modeling, Modal Properties, and Mesh Stiffness Variation Instabilities of Planetary Gears"
Robert G. Parker and Jian Lin
NASA CR-2001-210939, ARL-CR-462, May 2001 (File size 3 Mb)

"Computerized Design, Generation, and Simulation of Meshing and Contact of Face-Milled Formate Cut Spiral Bevel Gears"
Faydor L. Litvin, Qi Fan, and Alfonso Fuentes
NASA CR-2001-210894, ARL-CR-467, May 2001 (File size 1 Mb)

"Computerized Generation and Simulation of Meshing of Modified Spur and Helical Gears Manufactured by Shaving"
Faydor L. Litvin, Qi Fan, Daniele Vecchiato, and Alberto Demenego
NASA CR-2001-210893, ARL-CR-468, May 2001 (File size 2 Mb)

"Preventing Spacecraft Failures Due to Tribological Problems"
Robert L. Fusaro
NASA TM-2001-210806, April 2001 (File size 0.9 Mb)

"Testing of Face-Milled Spiral Bevel Gears at High-Speed and Load"
Robert F. Handschuh
NASA TM-2001-210743, ARL-TR-2381, March 2001 (File size 1 Mb)

"Minimizing Load Effects on NA4 Gear Vibration Diagnostic Parameter"
Paula J. Dempsey and James J. Zakrajsek
NASA TM-2001-210671, February 2001 (File size 3 Mb)

"Design, Generation and Tooth Contact Analysis (TCA) of Asymmetric Face Gear Drive With Modified Geometry"
Faydor L. Litvin, Alfonso Fuentes, J. Matthew Hawkins, and Robert F. Handschuh
NASA TM-2001-210614, ARL-TR-2373, January 2001 (File size 1 Mb)

2000 Reports Go to Top

"Advanced High Temperature Structural Seals"
Charles W. Newquist, Juris Verzemnieks, Peter C. Keller, and Mark W. Shorey
NASA CR-2000-210522, November 2000 (File size 1 Mb)

"Rudder/Fin Seal Investigations for the X-38 Re-Entry Vehicle"
Patrick H. Dunlap, Jr., Bruce M. Steinetz, and Donald M. Curry
NASA TM-2000-210338-REV1, AIAA-2000-3508, November 2000 (File size 0.4 Mb)

"Computerized Generation and Simulation of Meshing and Contact of New Type of Novikov-Wildhaber Helical Gears"
Faydor L. Litvin, Pin-Hao Feng, and Sergei A. Lagutin
NASA CR-2000-209415, ARL-CR-428, October 2000 (File size 0.9 Mb)

"Influence of Tooth Spacing Error on Gears With and Without Profile Modifications"
Giri Padmasolala, Hsiang H. Lin, and Fred B. Oswald
NASA TM-2000-210061, PTG-14436, October 2000 (File size 0.2 Mb)

"1999 NASA Seal/Secondary Air System Workshop"
Bruce M. Steinetz and Robert C. Hendricks, editors
NASA CP-2000-210472-VOL1, October 2000 (Abstract only -- pdf file not available)

"A Comparison of Vibration and Oil Debris Gear Damage Detection Methods Applied to Pitting Damage"
Paula J. Dempsey
NASA TM-2000-210371, September 2000 (File size 1 Mb)

"Design and Operating Characteristics of High-Speed, Small-Bore Cylindrical-Roller Bearings"
Stanley I. Pinel, Hans R. Signer, and Erwin V. Zaretsky
NASA TM-2000-209778, August 2000 (File size 0.3 Mb)

"Effect of Roller Profile on Cylindrical Roller Bearing Life Prediction"
Joseph V. Poplawski, Erwin V. Zaretsky, and Steven M. Peters
NASA TM-2000-210368, August 2000 (File size 0.6 Mb)

"Consideration of Moving Tooth Load in Gear Crack Propagation Predictions"
David G. Lewicki, Lisa E. Spievak, Paul A. Wawrzynek, Anthony R. Ingraffea, and Robert F. Handschuh
TM 210227, ARL-TR-2246, DETC2000/PTG-14386, July 2000

"Simulating Fatigue Crack Growth in Spiral Bevel Gears"
Lisa E. Spievak, Paul A. Wawrzynek, and Anthony R. Ingraffea
NASA CR-2000-210062, ARL-CR-451, May 2000

"Lubrication System Failure Baseline Testing on an Aerospace Quality Gear Mesh"
Robert F. Handschuh and Wilfredo Morales
NASA TM-2000-209954, ARL-TR-2214, May 2000

"Surface Fatigue Lives of Case-Carburized Gears With an Improved Surface Finish"
T.L. Krantz, M.P. Alanou, H.P. Evans, and R.W. Snidle
NASA TM-2000-210044, ARL-TR-2170, DETC2000/PTG-14373, April 2000

"Handbook on Face Gear Drives With a Spur Involute Pinion"
F.L. Litvin, A. Egelja, J. Tan, D.Y-D. Chen, and G. Heath
NASA CR-2000-209909, ARL-CR-447, March 2000 (File size 1.5 Mb)

"Performance and Durability of High Temperature Foil Air Bearings for Oil-Free Turbomachinery"
C. DellaCorte, V. Lukaszewicz, M.J. Valco, K.C. Radil, and H. Heshmat
NASA TM-2000-209187-REV1, ARL-TR-2202, March 2000

"Wave Fluid Film Bearing Tests for an Aviation Gearbox"
Florin Dimofte, Margaret P. Proctor, David P. Fleming, and Theo G. Keith, Jr.
NASA TM-2000-209766, January 2000

1999 Reports Go to Top

"Space Mechanisms Technology Workshop Proceedings"
Robert L. Fusaro, editor
NASA CP-1999-209200, October 1999 (Note: Large file 12.3 Mb)

"Enhanced Computer Aided Simulation of Meshing and Contact with Application for Spiral Bevel Gear Drives"
F.L. Litvin, M. De Donno, A. Peng, A. Vorontsov, and R.F. Handschuh
NASA TM-1999-209438, ARL-TR-2111, October 1999

"Comparison of Interpolation Methods as Applied to Time Synchronous Averaging"
Harry J. Decker and James J. Zakrajsek
NASA TM-1999-209086, ARL-TR-1960, June 1999

"Development of Thermal Barriers for Solid Rocket Motor Nozzle Joints"
Bruce M. Steinetz and Patrick H. Dunlap, Jr
NASA TM-1999-209278, AIAA-99-2823, June 1999

"Pressure Balanced, Low Hysteresis, Finger Seal Test Results"
Gul K. Arora, Margaret P. Proctor, Bruce M. Steinetz, and Irebert R. Delgado
NASA TM-1999-209191, ARL-MR-457, AIAA-99-2686, June 1999 (File size 517 Kb)

"Evaluation of Carburized and Ground Face Gears"
David G. Lewicki, Robert F. Handschuh, Gregory F. Heath, and Vijay Sheth
NASA TM-1999-209188, ARL-TR-1998, May 1999

"A Preliminary Study on the Vapor/Mist Phase Lubrication of a Spur Gearbox"
Wilfredo Morales and Robert F. Handschuh
NASA TM-1999-208833, February 1999

"Comparison of Experimental and Analytical Tooth Bending Stress of Aerospace Spiral Bevel Gears"
Robert F. Handschuh and George D. Bibel
NASA TM-1999-208903, ARL-TR-1891, February 1999

1998 Reports Go to Top

"Three-Dimensional Gear Crack Propagation Studies"
David G. Lewicki, Ashok D. Sane, Raymond J. Drago, and Paul A. Wawrzynek
NASA TM-1998-208827, ARL-TR-1833, December 1998

"Using Dynamic Analysis for Compact Gear Design"
Ping-Hsun Lin, Hsiang Hsi Lin, Fred B. Oswald, and Dennis P. Townsend
NASA TM-1998-207419, ARL-TR-1818, ASME DETC98/PTG-5785, September 1998

"Evaluation of Navy 9 cst Oil in Bell Helicopter M412 HP Gearboxes"
Zachary S. Henry and William R. Stapper
NASA CR-1998-208517, ARL-CR-430, August 1998 (Abstract only -- pdf file not available)

"Design and Operating Characteristics of High-Speed, Small Bore, Angular-Contact Ball Bearings"
Stanley I. Pinel, Hans R. Signer, and Erwin V. Zaretsky
NASA TM-1998-206981, August 1998

"Design, Fabrication, and Testing of a High-Speed, Over-Running Clutch for Rotorcraft"
Frank Fitz and Craig Gadd
NASA CR-1998-208513, ARL-CR-429, August 1998 (Abstract only -- pdf file not available)

"Feasibility Assessment of Thermal Barrier Seals for Extreme Transient Temperatures"
Bruce M. Steinetz and Patrick H. Dunlap, Jr.
NASA TM-1998-208484, AIAA-98-3288, July 1998 (File size 390 Kb)

"Operational Evaluation of a Health and Usage Monitoring System (HUMS)"
J. Cronkhite, B. Dickson, W. Martin, and G. Collingwood
NASA CR-1998-207409, ARL-CR-420, DOT/FAA/AR-97/64, April 1998 (Abstract only -- pdf file not available)

"Advanced Seal Technology Role in Meeting Next Generation Turbine Engine Goals"
Bruce M. Steinetz, Robert C. Hendricks, and John Munson
NASA TM-1998-206961, AVT-PPS Paper No. 11, April 1998

"A Parametric Study of Spur Gear Dynamics"
Hsiang Hsi Lin and Chuen-Huei Liou
NASA CR-1998-206598, ARL-CR-419, January 1998 (Abstract only -- pdf file not available)

1997 Reports Go to Top

"Development of Gear Technology and Theory of Gearing"
Faydor L. Litvin
NASA RP-1406, December 1997 (Note: File size 3.26 Mb)

"New Methods for Improved Double Circular-Arc Helical Gears"
Faydor L. Litvin and Jian Lu
NASA CR-4771, ARL-CR-339, July 1997 (Note: File size 3.26 Mb)

"Effects of Compression, Staging, and Braid Angle on Braided Rope Seal Performance"
Bruce M. Steinetz and Michael L. Adams
NASA TM-107504, AIAA-97-2872, July 1997 (File size 160 Kb)

"JTAGG II Brush Seal Test Results"
Gul K. Arora and Margaret P. Proctor
NASA TM-107448, AIAA-97-2632, ARL-TR-1397, July 1997 (File size 253 Kb)

"A. Palmgren Revisited - A Basis for Bearing Life Prediction"
Erwin V. Zaretsky
NASA TM-107440, April 1997

"Gear and Transmission Research at NASA Lewis Research Center"
Dennis P. Townsend
NASA TM-107428, ARL-TR-1339, April 1997 (Abstract only -- pdf file not available)

"Diagnostic Analyzer for Gearboxes (DAG): User's Guide"
Vinay B. Jammu and Kourosh Danai
NASA CR-4762, ARL-CR-333, January 1997 (Abstract only -- pdf file not available)

1996 Reports Go to Top

"Meshing of a Spiral Bevel Gearset With 3D Finite Element Analysis"
George D. Bibel and Robert Handschuh
NASA TM-107336, ARL-TR-1224, October 1996 (Abstract only -- pdf file not available)

"Measurement of Gear Tooth Dynamic Friction"
Brian Rebbechi, Fred B. Oswald, and Dennis P. Townsend
NASA TM-107279, ARL-TR-1165, September 1996

"A Computer Program for the Computation of Running Gear Temperatures Using Green's Function"
S. Koshigoe, J.W. Murdock, L.S. Akin, and D.P. Townsend
NASA TM-107241, ARL-TR-1117, September 1996

"Evaluation of a Vibration Diagnostic System for the Detection of Spiral Bevel Gear Pitting Failures"
Dennis P. Townsend, James J. Zakrajsek, and Robert F. Handschuh
NASA TM-107228, ARL-TR-1106, September 1996 (Abstract only -- pdf file not available)

"Experimental Evaluation of Face Gears for Aerospace Drive System Applications"
Robert F. Handschuh, David G. Lewicki, Gregory F. Heath, and Robert B. Bossler, Jr
NASA TM-107227, ARL-TR-1109, September 1996

"Acoustic Radiation Efficiency Models of a Simple Gearbox"
Mark F. Jacobson, Rajendra Singh, and Fred B. Oswald
NASA TM-107226, ARL-TR-1111, September 1996

"Dynamic Forces in Spur Gears-Measurement, Prediction, and Code Validation"
Fred B. Oswald, Dennis P. Townsend, Brian Rebbechi, and Hsiang Hsi Lin
NASA TM-107223, ARL-TR-1088, September 1996 (Abstract only -- pdf file not available)

"Balancing Dynamic Strength of Spur Gears Operated at Extended Center Distance"
Hsiang Hsi Lin, Chuen-Huei Liou, Fred B. Oswald, and Dennis P. Townsend
NASA TM-107222, ARL-TR-1087, September 1996

"A Method to Analyze and Optimize the Load Sharing of Split Path Transmissions"
Timothy L. Krantz
NASA TM-107201, ARL-TR-1066, September 1996.

"Dynamic Analysis of Spur Gear Transmissions (DANST) PC Version 3.00 User Manual"
Fred B. Oswald, Hsiang Hsi Lin, and Irebert R. Delgado
NASA TM-107291, ARL-TR-1189, August 1996

"Effect of Rim Thickness on Gear Crack Propagation Path"
David G. Lewicki and Roberto Ballarini
NASA TM-107229, ARL-TR-1110, August 1996

"Effects of Planetary Gear Ratio on Mean Service Life"
M. Savage, K.L Rubadeux, and H.H. Coe
NASA TM-107275, ARL-TR-1150, July 1996 (Abstract only -- pdf file not available)

"High Temperature Braided Rope Seals for Static Sealing Applications"
Bruce M. Steinetz, Michael L. Adams, Paul A. Bartolotta, Ram Darolia, and Andrew Olsen
NASA TM-107233, AIAA-96-2910, July 1996

"Experimental Study of Split Path Transmission Load Sharing"
Timothy L. Krantz and Irebert R. Delgado
NASA TM-107202, ARL-TR-1067, June 1996

"Model-Based Sensor Location Selection for Helicopter Gearbox Monitoring"
Vinay B. Jammu, Keming Wang, Kourosh Danai, and David G. Lewicki
NASA TM-107219, ARL-TR-1099, May 1996 (Abstract only -- pdf file not available)

"Crack Propagation Studies to Determine Benign or Catastrophic Failure Modes for Aerospace Thin-Rim Gears"
David G. Lewicki
NASA TM-107170, ARL-TR-971, May 1996 (Abstract only -- pdf file not available)

"Feasibility Study of a Rotorcraft Health and Usage Monitoring System B. Dickson, J. Cronkhite, S. Bielefeld, L. Killian, and R. Hayden
(HUMS): Usage and Structural Life Monitoring Evaluation"
NASA CR-198447, ARL-CR-290, DOT/FAA/AR-95/9, February 1996 (Abstract only -- pdf file not available)

"Feasibility Study of a Rotorcraft Health and Usage Monitoring System Raylund Romero, Harold Summers, and James Cronkhite
(HUMS): Results of Operator's Evaluation"
NASA CR-198446, ARL-CR-289, DOT/FAA/AR-95/50, February 1996 (Abstract only -- pdf file not available)

"Detecting Gear Tooth Fatigue Cracks in Advance of Complete Fracture"
James J. Zakrajsek and David G. Lewicki
NASA TM-107145, ARL-TR-970, January 1996

"Gear Crack Propagation Investigations"
David G. Lewicki and Roberto Ballarini
NASA TM-107147, ARL-TR-957, January 1996 (Abstract only -- pdf file not available)

1995 Reports Go to Top

"Minimization of the Vibration Energy of Thin-Plate Structures and the Application to the Reduction of Gearbox Vibration"
Katsumi Inoue and Timothy L. Krantz
NASA TM-106878, ARL-TR-722, December 1995

"Accelerated Testing of Space Mechanisms"
S. Frank Murray and Hooshang Heshmat
NASA CR-198437, December 1995 (Abstract only -- pdf file not available)

"A New Antiwear Additive/Surface Pretreatment for PFPE Liquid Lubricants"
Wilfredo Morales, Robert L. Fusaro, Mark Siebert, Theo Keith, Ralph Jansen, and Pilar Herrera-Fierro
NASA TM-107038, December 1995 (Abstract only -- pdf file not available)

"Experimental and Analytical Assessment of the Thermal Behavior of Spiral Bevel Gears"
Robert F. Handschuh and Thomas P. Kicher
NASA TM-107009, ARL-TR-852, August 1995 (Abstract only -- pdf file not available)

"The Surface Fatigue Life of Contour Induction Hardened AISI 1552 Gears"
Dennis P. Townsend, Alan Turza, and Mike Chaplin
NASA TM-107017, ARL-TR-808, July 1995

"Bending Strength Model for Internal Spur Gear Teeth"
M. Savage, K.L. Rubadeux and H.H. Coe
NASA TM-107012, ARL-TR-838, July 1995 (Abstract only -- pdf file not available)

"Influence of Tooth Profile Modification on Spur Gear Dynamic Tooth Strain"
Fred B. Oswald and Dennis P. Townsend
NASA TM-106952, ARL-TR-778, AIAA-95-3050, June 1995 (Abstract only -- pdf file not available)

"Diagnosis of Helicopter Gearboxes Using Structure-Based Networks"
Vinay B. Jammu, Kourosh Danai and David G. Lewicki
NASA TM-106932, ARL-TR-761, June 1995 (Abstract only -- pdf file not available)

"Bell Helicopter Advanced Rotorcraft Transmission (ART) Program"
Zachary S. Henry
NASA CR-195479, ARL-CR-00, June 1995 (Abstract only -- pdf file not available)

"Actively Controlled Shaft Seals for Aerospace Applications"
Richard F. Salant and Paul Wolff
NASA CR-4678, June 1995 (Abstract only -- pdf file not available)

"Vibration Analysis of a Split Path Gearbox"
Timothy L. Krantz and Majid Rashidi
NASA TM-106875, ARL-TR-723, AIAA-95-3048, May 1995

"Using Hob Offset to Balance Dynamic Strength in Spur Gears
Chuen-Huei Liou, Hsiang Hsi Lin, Fred B. Oswald, and Dennis P. Townsend
NASA TM-106934, ARL-TR-764, AIAA-95-3046, May 1995 (Abstract only -- pdf file not available)

"Transmission Diagnostic Research at NASA Lewis Research Center"
J.J. Zakrajsek, D.P. Townsend, D.G. Lewicki, H.J. Decker, and R.F. Handschuh
NASA TM-106901, ARL-TR-748, April 1995

"Comparison of Life Theories for Rolling-Element Bearings"
Erwin V. Zaretsky, Joseph V. Poplawski, and Steven M. Peters
NASA TM-106585, April 1995 (Abstract only -- pdf file not available)

"Effect of Hoop Stress on Ball Bearing Life Prediction"
Erwin V. Zaretsky, Richard August, and Harold H. Coe
NASA TM-106874, April 1995 (Abstract only -- pdf file not available)

"Computerized Design and Generation of Low-Noise Gears With Localized Bearing Contact"
Faydor L. Litvin, Ningxin Chen, Jui-Sheng Chen, Jian Lu, and Robert F. Handschuh
NASA TM-106880, ARL-TR-760, April 1995 (Abstract only -- pdf file not available)

"Detecting Gear Tooth Fracture in a High Contact Ratio Face Gear Mesh"
James J. Zakrajsek, Robert F. Handschuh, David G. Lewicki and Harry J. Decker
NASA TM-106822, ARL-TR-600, January 1995 (Abstract only -- pdf file not available)

"Wave Journal Bearing Part I: Analysis"
Florin Dimofte
NASA CR-195431, January 1995 (Abstract only -- pdf file not available)

"Wave Journal Bearing Part II: Experimental Pressure Measurements and Fractional Frequency Whirl Threshold for Wave and Plain Journal Bearings"
Florin Dimofte
NASA TM-106848, January 1995 (Abstract only -- pdf file not available)

"Generation and Computerized Simulation of Meshing and Contact of Modified Involute Helical Gears"
Faydor L. Litvin, Ningxin Chen, and Jian Lu
NASA CR-4644, ARL-CR-221, January 1995 (Abstract only -- pdf file not available)

Drive Systems Reports Go to Top

"Relation Between Hertz-Life Exponent, Ball-Race Conformity, and Ball Bearing Life"
Zaretsky, Erwin, V.; Poplawski, Joseph, V.; Root, Lawrence, E.
NASA/TM-2008-214265, January 2008 (File size 1 Mb)

"Pitting and Bending Fatigue Evaluations of a New Case-Carburized Gear Steel"
Krantz, Timothy; Tufts, Brian
NASA/TM-2007-215009; ARL-TR-4123, December, 2007 (File size 2 Mb)

"Evaluation of a Low-Noise Formate Spiral-Bevel Gear Set"
Lewicki, David, G.; Woods, Ron, L.; Litvin, Faydor, L.; Fuentes, Alfonso
NASA/TM-2007-215032; ARL-TR-4125, December, 2007 (File size 1 Mb)

"Reexamination of Ball-Race Conformity Effects on Ball Bearing Life"
Zaretsky, Erwin, V.; Poplawski, Joseph, V.; Root, Lawrence, E.
NASA/TM-2007-213635, September 2007 (File size 2 Mb)

"Vibration Transmission Through Bearings With Application to Gearboxes"
Fleming, David, P.
NASA/TM-2007-214954; ISCORMA-4-510, July 2007 (File size 1 Mb)

"Investigation of Current Methods to Identify Helicopter Gear Health"
Dempsey, Paula, J.; Lewicki, David, G.; Le, Dy, D.
NASA/TM-2007-214664, July 2007 (File size 1 Mb)

"Design of Oil-Lubricated Machine for Life and Reliability"
Erwin V. Zaretsky
NASA TM-2007-214362, January 2007 (File size 1 Mb)

"Operational Influence on Thermal Behavior of High-Speed Helical Gear Trains"
Robert F. Handschuh and Charles J. Kilmain
NASA TM-2006-214344, ARL-TR-3969, November 2006 (File size 2 Mb)

"Transient Response of Rotor on Rolling-Element Bearings with Clearance"
David P. Fleming, Brian T. Murphy, Jerzy T. Sawicki, and J.V. Poplawski
NASA TM-2006-214408, October 2006 (File size 1 Mb)

"Tapered Roller Bearing Damage Detection Using Decision Fusion Analysis"
Paula J. Dempsey, Gary Kreider, and Thomas Fichter
NASA TM-2006-214380, July 2006 (File size 6 Mb)

"Gas Seal Pad With Herringbone-Grooved Rotor-Stiffness and Load Capacity"
David P. Flemming
NASA TM-2006-214333, May 2006 (File size 1 Mb)

"Phosphate Reactions as Mechanisms of High-Temperature Lubrication"
Anitha Nagarajan, Carolina Garrido, Jorge E. Gatica, and Wilfredo Morales
NASA TM-2006-214060, May 2006 (File size 0.7 Mb)

"Seal Investigations of an Active Clearance Control System Concept"
Bruce M. Steinetz, Shawn Taylor, Jay Oswald, and Jonathan A. DeCastro
NASA TM-2006-214114, February 2006 (File size 7 Mb)