Analysis and Design of Gas-Lubricated Tilting-Pad Journal Bearings for Miniature Cryogenic Turbomachinery
Final technical rept. May 1969-May 1970
FRANKLIN INST RESEARCH LABS PHILADELPHIA PA
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Extensive steady-state and dynamic design information was generated for tilting pad journal bearings with emphasis on miniature cryogenic turbomachinery applications. Coverage includes bearing length to diameter ratios of from 0.5 to 2.0 and values of the compressibility parameter from 1.5 to 20. Information was put into a format for use by design engineers and a separate section discusses design procedures plus practical considerations. An experimental program was completed, using room temperature air as the lubricant, which substantiated the analytical information. Variable grid computerized analysis was required to avoid numerical problems at high values of the compressibility parameter. These methods proved very successful and represent a significant improvement over constant grid techniques.
- Machinery and Tools