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GearingGearing technology in its modern form has a history of only 100 years. However, the earliest form of gearing can probably be traced back to fourth century B.C. Greece. Current gear practice and recent advances in the technology are drawn together. The history of gearing is reviewed briefly in the Introduction. Subsequent sections describe types of gearing and their geometry, processing, and manufacture. Both conventional and more recent methods of determining gear stress and deflections are considered. The subjects of life prediction and lubrication are additions to the literature. New and more complete methods of power loss predictions as well as an optimum design of spur gear meshes are described. Conventional and new types of power transmission systems are presented.
Document ID
Document Type
Other - NASA Reference Publication (RP)
Coy, J. J.
(Army Aviation Research and Technology Activity Cleveland, Ohio, United States)
Townsend, D. P.
(NASA Lewis Research Center Cleveland, OH, United States)
Zaretsky, E. V.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 5, 2013
Publication Date
December 1, 1985
Subject Category
Mechanical Engineering
Report/Patent Number
NAS 1.61:1152
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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