AN INVESTIGATION OF SELF-ACTING FOIL BEARINGS,
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1964
- Accession Number
- AD0600657
Entities
People
- Joseph T. Ma
Organizations
- Ampex