Abstract
Data are reported for two rotors (1.44 and 5.88 pounds) supported by externally pressurized gas bearings. Comparative plots show that the effective spring rate for synchronous whirl (a function of pressure) also serves to account for the shaft displacement under gravity load and under low-frequency impact loading. Exceptions are noted at the half-speed whirl threshold and at low speed and low pressure. Some explanation is offered for these discrepancies, as well as for observed displacements somewhat in excess of that predicted on the basis of the linear spring, under impact. Contributed by the ASLE Technical Committee on Bearings and Bearing Lubrication and presented at the Annual Meeting of the American Society of Lubrication Engineers held in Detroit, Michigan, May, 1965.
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