SHAKE TABLE TESTS OF A SPIRAL-GROOVED JOURNAL BEARING.
MECHANICAL TECHNOLOGY INC LATHAM N Y
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A 1.5 inch diameter, LD 1, spiral-grooved, gas journal bearing with a rotor weight of 2-18 lb. per bearing, mounted in a housing total weight of approximately 100 lb. was subjected to a one g vibrating load over a frequency spectrum of 20 to 2000 cps. Tests were made at rotor speeds of 12,000, 20,000 and 30,000 rpm. The only static bearing load imposed was the rotor weight. The in-line and perpendicular frequency responses of the rotor both magnitude and phase angle were measured and recorded. No sign of bearing touchdown was detected. Correlation between this experimental data and available theoretical data was good. Author
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