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Meeting the challenge of a 50000-hour-life-time requirementSpace mission requirements for the 70's have established a 50,000-hour-lifetime challenge for the mechanisms designer. This challenge may be met by two approaches: (1) development of new materials for wear-prone elements, and (2) design innovation of new electromechanical devices that do not include mechanical wear-prone components. Present state-of-the-art materials require restricted operation regarding load, speed, and power for gears, bearings, and brush-slipring components. These restrictions are discussed, and methods of improvement are suggested. The design-innovations approach is discussed and is illustrated by the design of an experimental magnetically suspended motor.
Document ID
19720005762
Document Type
Other
Authors
Vest, C. E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Studer, P. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1971
Publication Information
Publication: 5th Aerospace Mech. Symp.
Subject Category
MACHINE ELEMENTS AND PROCESSES
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19720005742Analytic PrimaryFifth Aerospace Mechanisms SymposiumN72-13391 04-15Analytic Primary
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