Accession Number : AD0426955


Title :   RESEARCH ON GAS LUBRICATION AT HIGH TEMPERATURE AND LOW FLOW RATES.


Descriptive Note : Quarterly progress rept. no. 3,


Corporate Author : MECHANICAL TECHNOLOGY INC LATHAM N Y


Personal Author(s) : Lewis,P ; Meacher,J


Report Date : 27 Dec 1963


Pagination or Media Count : 21


Abstract : The instability of the hybrid gas journal bearing is investigated analytically. The bearing is supplied with pressurized air through orifices in the centerplane which is approximated by a line source. The gas film equation, Reynolds equation, is solved by the linearized Ph-method including the hydrostatic pressure effect and used to generate the coefficients for the deter mination of the threshold of instability. The equations are solved by numerical integration. The results for threshold speed and frequency are given in the form of graphs. Comparison with experimental data shows qualitative agree ment but quantitatively there are discrepancies of as much as 2:1. This is believed to be caused by too simple an orifice representation whereas the gas film in itself should be correctly treated. A method for correction is discussed. (Author)


Descriptors :   *GAS BEARINGS , STABILITY , GASES , BEARINGS , ORIFICES


Distribution Statement : APPROVED FOR PUBLIC RELEASE