Accession Number:

AD0686028

Title:

A UNIVERSALLY VALID COMPRESSIBLE THEORY FOR GAS-LUBRICATED, NARROW, SPIRAL-GROOVED THRUST BEARINGS.

Descriptive Note:

Technical rept.,

Corporate Author:

MECHANICAL TECHNOLOGY INC LATHAM N Y

Personal Author(s):

Report Date:

1969-04-01

Pagination or Media Count:

39.0

Abstract:

Whipples theory for spiral-grooved bearings becomes inaccurate when a fixed geometry including overall geometry and number of grooves is required to operate at a large compressibility number. This phenomenon is in addition to the end leakage effect previously considered by Muyderman. Earlier works concerned with the local compressibility effect predicted load capacity degradation in comparison with that calculated load capacity degradation in comparison with that calculated according to Whipples theory. The amount of load degradation increases with the local compressibility number based on the ambient pressure and with the width-to-length ratio of the grooves. A new theory was developed such that the pressure field can be calculated in a self-consistent manner for narrow-groove bearings of any value of the local compressibility number. Author

Subject Categories:

  • Aerodynamics
  • Machinery and Tools
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE