Zero-Load Stability of Rotating Externally Pressurized Gas-Lubricated Journal Bearings

[+] Author and Article Information
David P. Fleming, R. E. Cunningham, W. J. Anderson

Lewis Research Center, National Aeronautics and Space Administration, Cleveland, Ohio

J. of Lubrication Tech 92(2), 325-334 (Apr 01, 1970) (10 pages) doi:10.1115/1.3451403 History: Received July 11, 1969; Online October 18, 2010


A small eccentricity analysis was performed for a bearing having two feeding planes, each of which is assumed to be a line source. Numerical results were obtained for a range of bearing number, pressure ratio, feeding parameter, and orifice recess volume by means of a digital computer. Steady-state load and attitude angle were obtained, as well as stability data. Stability decreased markedly with increasing recess volume; moreover, for large recess volume and low bearing number, an increase in pressure ratio decreased stability. There was no correlation between stability and steady-state attitude angle for any of the cases studied. Fair agreement was obtained with available experimental data.

Copyright © 1970 by ASME
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