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Quasi-static analysis of foil journal bearings for a Brayton cycle turboalternatorA quasi-static analysis is presented for foil journal bearings designed for a NASA Brayton Cycle Turboalternator. Included in the analysis are effects of 'slack' (due to flexural rigidity of the foil), of frictionally restrained extension of the foil-length in contact with cylindrical guides, of fluid inertia and compressibility, and of thermal expansion of rotor, foil and supporting structure. Comparisons are made with results of early experiments performed by Licht (1968, 1969) and recent data of Licht and Branger (1973). Variatons of film thickness, foil tension and bearing stiffness are presented graphically as functions of pertinent parameters for the case of operation in zero-gravity environment.
Document ID
19750028150
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Eshel, A.
(Ampex Corp. Redwood City, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
October 1, 1974
Subject Category
Mechanical Engineering
Report/Patent Number
ASME PAPER 74-LUB-29
Meeting Information
Meeting: American Society of Mechanical Engineers and American Society of Lubrication Engineers, Joint Lubrication Conference
Location: Montreal
Country: Canada
Start Date: October 8, 1974
End Date: October 10, 1974
Sponsors: American Society of Mechanical Engineers and American Society of Lubrication Engineers
Accession Number
75A12222
Funding Number(s)
CONTRACT_GRANT: N00014-71-C-0001
CONTRACT_GRANT: NAS3-15341
Distribution Limits
Public
Copyright
Other

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