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Load capacity estimation of foil air journal bearings for oil-free turbomachinery applications
- Article from:
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Tribology Transactions
- Article date:
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October 1, 2000
- Author:
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;
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Copyright informationCopyright Society of Tribologists and Lubrication Engineers Oct 2000. Provided by ProQuest LLC. (Hide copyright information)
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This paper introduces a simple "Rule of Thumb" (ROT) method to estimate the load capacity of foil air journal bearings, which are self-acting compliant-surface hydrodynamic bearings being considered for Oil-Free turbomachinery applications such as gas turbine engines. The ROT is based on first principles and data available in the literature and it relates bearing load capacity to the bearing size and speed through an empirically based load capacity coefficient, D. It is shown that load capacity is a linear function of bearing surface velocity and bearing projected area. Furthermore, it was found that the load capacity coefficient, D, is related to the design features of the bearing ...
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