Accession Number : AD0600657

Title :   AN INVESTIGATION OF SELF-ACTING FOIL BEARINGS,

Corporate Author : AMPEX CORP REDWOOD CITY CALIF

Personal Author(s) : Ma,Joseph T.

Report Date : MAR 1964

Pagination or Media Count : 41

Abstract : Experimental results on the interior and exit region film thickness measurements of self-acting foil bearings are presented and discussed. These measurements were made with capacitive sensors and conductive foils. The validity of a growing sinusoidal film thickness in the exit region first predicted by Gross is clearly evidenced from the photographs. The measured wave lengths checked with Barlow's calculated values within 6 percent. For a constant relative velocity, the effect of increasing tension is to decrease the film thickness; while for a constant tension, the effect of increasing speed is to increase the film thickness. The effect of gas compressibility becomes important for high relative velocity; and the effect of surface roughness greatly influences either the predicted or measured values for thin film thickness. The data presented in this report cover a range of drum linear speed from 30 to 1942 in/sec and tape tension from 0.054 to 3.24 lb/in. (Author)

Descriptors :   (*BEARINGS, FOILS(MATERIALS)), (*FILMS, MEASUREMENT), MEASUREMENT, LUBRICATION, AIR, THICKNESS

Distribution Statement : APPROVED FOR PUBLIC RELEASE