Development of Compliant Bearing Designs for Directional Control Gyroscope

摘要

The report contains the analysis and experimental verification of basic operating characteristics of a flat externally pressurized elastomeric gas bearing. Pressure, films, flow and creep properties of silicone rubber are presented. Three hardnesses and layer thicknesses are examined. In addition, elastic modulus, stiffness and damping are presented. High speed (40,000 rpm) data was obtained for one tested rotor with an elastomeric molded spherical cavity bearing. The coupled elastic/hydrodynamic equations are solved. For preload deflections, the liftoff pressure is determined. The sensitivity of liftoff with Poisson's ratio is indicated. Both compressible and incompressible cases are reported. (Author)