Accession Number:

AD0266016

Title:

GEOMETRY EFFECTS ON THE THRESHOLD OF HALF-FREQUENCY WHIRL IN GAS-DYNAMIC JOURNAL BEARINGS

Descriptive Note:

Corporate Author:

GENERAL ELECTRIC CO SCHENECTADY N Y

Personal Author(s):

Report Date:

1961-10-16

Pagination or Media Count:

1.0

Abstract:

Various groove arrangements and orifices were used to raise the threshold of Half-Frequency Whirl HFW. Experimental results on several different bearing geometries are presented. The threshold of HFW was markedly influenced by the position of a small orifice with a 0.020 in. diam with respect to the load vector, and by grooves and their location with respect to the load vector. The load carrying capacity of a grooved bearing is largely dependent on the number of grooves and their position with respect to the load vector. The lower the attitude angle the higher the threshold of HFW. Hybrid bearings can be designed with high threshold of HFW. Unless properly designed, however, they have much smaller load carrying capacity than plain cylindrical journal bearings. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE