Numerical Analysis on Dynamic Characteristics of Cryogenic Hydrostatic Journal Bearing

[+] Author and Article Information
Hiroyuki Yoshikawa, Terukazu Ota

Department of Machine Intelligence and Systems Engineering, Tohoku University, Aramaki-Aoba 01, Aoba-ku, Sendai, 980-8579, Japan

Kazuyuki Higashino, Shunichiro Nakai

Ishikawajima-Harima Heavy Industries Co., Ltd., Mizuho, Nishitama, Tokyo, 190-1297, Japan

J. Tribol 121(4), 879-885 (Oct 01, 1999) (7 pages) doi:10.1115/1.2834150 History: Received August 19, 1997; Revised October 19, 1998; Online January 24, 2008


Dynamic characteristics of a two row staggered recess cryogenic hydrostatic journal bearing used in the liquid hydrogen turbopump of rocket engines for space transport systems are numerically analyzed. Effects of the rotational speed and the shaft eccentricity are studied in the analysis. Their effects on the stiffness and damping coefficients and the whirl frequency ratio are clarified. Moreover, effects of the orifice parameter, the distance between two recess rows, and the number of recesses on these dynamic characteristics are investigated.

Copyright © 1999 by The American Society of Mechanical Engineers
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