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There are a total of 53 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Design and Stress Analysis of Low-Noise Adjusted Bearing Contact Spiral Bevel Gears
Author(s): Fuentes, A.; Litvin, F. L.; Mullins, B. R.; Woods, R.; Handschuh, R. F.; Lewicki, David G.
Abstract: An integrated computerized approach for design and stress analysis of low-noise spiral bevel gear drives with adjusted bearing contact is proposed. The procedure of computations is an iterative process that requires four ...
NASA Center: Glenn Research Center
Publication Year: 2002
Added to NTRS: 2008-06-02
Document ID: 20020070782
Mathematical models for the synthesis and optimization of spiral bevel gear tooth surfaces
Author(s): Litvin, F. L.; Rahman, P.; Goldrich, R. N.
Abstract: The geometry of spiral bevel gears and to their rational design are studied. The nonconjugate tooth surfaces of spiral bevel gears are, in theory, replaced (or approximated) by conjugated tooth surfaces. These surfaces can ...
NASA Center: NASA (non Center Specific)
Publication Year: 1982
Added to NTRS: 2005-10-13
Accession Number: 82N25516; Document ID: 19820017640; Report Number: NAS 1.26:3553, NASA-CR-3553
New generation methods for spur, helical, and spiral-bevel gears
Author(s): Litvin, F. L.; Tsung, W.-J.; Coy, J. J.; Handschuh, R. F.; Tsay, C.-B. P.
Abstract: New methods for generating spur, helical, and spiral-bevel gears are proposed. These methods provide the gears with conjugate gear tooth surfaces, localized bearing contact, and reduced sensitivity to gear misalignment. ...
NASA Center: Glenn Research Center
Publication Year: 1986
Added to NTRS: 2005-10-13
Accession Number: 87N15466; Document ID: 19870006033; Report Number: AD-A178145, E-3216, NAS 1.15:88862, NASA-TM-88862, USAAVSCOM-TR-86-C-27
Synthesis and Optimization of Spiral Bevel Gears
Author(s): Litvin, F. L.; Rahman, P.; Goldrich, R. N.
Abstract: Two mathematical models help in optimizing design of spiral bevel gears. In essence, replace actual generated tooth surface with mathematical conjugate approximation. Tooth surfaces of spiral bevel gears replaced (or ...
NASA Center: Glenn Research Center
Publication Year: 1986
Added to NTRS: 2005-09-30
Accession Number: 85B10389; Document ID: 19850000389; Report Number: LEW-13920
Further Study Of Face Gears For Helicopter Transmissions
Author(s): Litvin, F. L.; Wang, J. C.; Bossler, R. B., Jr.; Chen, Y. J. D.; Heath, G.; Lewicki, D. G.
Abstract: Document describes theoretical, computational, and experimental studies of feasibility of proposed lightweight, split-torque helicopter transmissions based on face gears. Majority of work also described in prior document ...
NASA Center: Glenn Research Center
Publication Year: 1995
Added to NTRS: 2005-09-30
Accession Number: 95B10589; Document ID: 19950070410; Report Number: LEW-16193
Computerized Inspection Of Gear-Tooth Surfaces
Author(s): Handschuh, R. F.; Litvin, F. L.; Zhang, Y.; Kuan, C.
Abstract: Method of manufacturing gears with precisely shaped teeth involves computerized inspection of gear-tooth surfaces followed by adjustments of machine-tool settings to minimize deviations between real and theoretical versions ...
NASA Center: Glenn Research Center
Publication Year: 1994
Added to NTRS: 2005-09-30
Accession Number: 94B10390; Document ID: 19940000390; Report Number: LEW-15736
Face Gears For Helicopter Transmissions
Author(s): Lewicki, D. G.; Litvin, F. L.; Wang, J. C.; Bossler, R. B., Jr.; Chen, Y. J.; Heath, G.
Abstract: NASA technical memorandum describes theoretical, computational, and experimental study of potential utility of face gears in lightweight, split-torque helicopter transmissions.
NASA Center: Glenn Research Center
Publication Year: 1994
Added to NTRS: 2005-09-30
Accession Number: 94B10534; Document ID: 19940000534; Report Number: LEW-15840
New Methods For Generating Gear Surfaces
Author(s): Coy, John J.; Handschuh, Robert F.; Litvin, F. L.; Tsung, W.-J.; Tsay, C.-B. P.
Abstract: Report presents new methods for generating spur, helical, and spiral-bevel gears. Computer programs for analysis of tooth contacts developed for gears. Applied to spiral-bevel gears by use of currently available machinery ...
NASA Center: Glenn Research Center
Publication Year: 1989
Added to NTRS: 2005-09-30
Accession Number: 89B10030; Document ID: 19890000030; Report Number: LEW-14570
Helical Gears Modified To Decrease Transmission Errors
Author(s): Handschuh, R. F.; Coy, J. J.; Litvin, F. L.; Zhang, J.
Abstract: Tooth surfaces of helical gears modified, according to proposed design concept, to make gears more tolerant of misalignments and to improve distribution of contact stresses. Results in smaller transmission errors, with ...
NASA Center: Glenn Research Center
Publication Year: 1993
Added to NTRS: 2005-09-30
Accession Number: 93B10668; Document ID: 19930000668; Report Number: LEW-15048
Minimization of deviations of gear real tooth surfaces determined by coordinate measurements
Author(s): Litvin, F. L.; Kuan, C.; Wang, J.-C.; Handschuh, R. F.; Masseth, J.; Maruyama, N.
Abstract: The deviations of a gear's real tooth surface from the theoretical surface are determined by coordinate measurements at the grid of the surface. A method was developed to transform the deviations from Cartesian coordinates ...
NASA Center: Glenn Research Center
Publication Year: 1992
Added to NTRS: 2005-08-25
Accession Number: 92N30948; Document ID: 19920021704; Report Number: AD-A257176, AVSCOM-TR-92-C-003, E-7115, NAS 1.15:105718, NASA-TM-105718
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