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Thermal effects on the clearance and stiffness of foil journal bearings for a Brayton cycle turboalternator

Author
Eshel, A.
Published
Sep 1, 1972.
Physical Description
1 electronic document
Online Version

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Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
An analysis of foil journal bearings for a NASA Brayton Cycle Unit (BRU) is presented. The study represents an extension of previous work in that it includes the effects of thermal expansion of foil-bearing components, as well as an improved model of the influence of foil flexure. The results presented give the bearing film thickness, the bearing stiffness, and the foil tension as functions of the operating temperatures and the elasto-hydrodynamic and geometrical parameters pertinent to the design of BRU foil bearings. A computer program for the evaluation of design data and for parametric studies is included.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19720024845.
Accession ID: 72N32495.
E-6976.
NASA-CR-2113.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15945697