Abstract
The design of an externally pressurized air bearing for which the gap can only take two given values is optimized in such a way that the net lift force it can achieve is maximum. The distribution of the gap is assumed to be periodic in the direction perpendicular to the main airflow with a period small enough so that the problem can be treated as one dimensional via the process of homogenization. The optimization analysis is subject to the constraint of a given gap volume which can be justified for stability reasons. An analytical solution is proposed within the framework of Reynolds' equation which shows a large improvement when compared with the typical step bearing at low gap volume. Presented at the 44th Annual Meeting In Atlanta, Georgia May 1–4, 1989
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