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Assessment of the Tribological Requirements of Advanced Spacecraft Mechanisms

Published online by Cambridge University Press:  28 February 2011

Paul D. Fleischauer  and
Michael R. Hilton
Paul D. Fleischauer
Affiliation:
Chemistry and Physics Laboratory, The Aerospace Corporation, p. o. Box 92957, M2-271, Los Angeles, CA 90009
Michael R. Hilton
Affiliation:
Chemistry and Physics Laboratory, The Aerospace Corporation, p. o. Box 92957, M2-271, Los Angeles, CA 90009
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Abstract

A survey was conducted of existing technologies for moving mechanical assemblies used in spacecraft applications. The purpose was to identify areas where future requirements for lifetimes in excess of ten years with anticipated speeds, loads, and temperatures might not be satisfied. Some specific mechanisms, such as momentum/reaction wheels, high-speed turbines, pointing and tracking mechanisms, despin mechanisms, and gimbal mechanisms, were identified as areas for potential application of existing but unused technologies. Two major problem areas identified involve boundary-regime lubrication and lubricant supply (active or passive) for long life. Areas where substantial, near-term improvements appear practical include the use of hybrid bearings, new synthetic fluid lubricants, new bearing retainer materials, and properly designed solid-film lubricants.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 140: Symposium S – New Materials Approaches to Tribology: Theory and Applications , 1988 , 9
Copyright
Copyright © Materials Research Society 1989

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