Contrails
The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

Evaluation of Gas Lubricated Hydrodynamic Bearings in a Gas Turbine Environment

Report Number: AFAPL TR 72-41
Author(s): Swenson, Kendall R.; Hughes, Nick M.; Heuer, Don F.
Corporate Author: Airesearch Manufactruing Company of Arizona
Laboratory: Air Force Aero Propulsion Laboratory
Date of Publication: 1972-06
Pages: 59
Contract: F33615-71-C-1376
Project: None Given
AD Number: AD0744844

Abstract:
The report contains a summary of the design analysis, development testing, and demonstration testing performed to demonstrate the feasibility of using gas lubricated hydrodynamic bearings in a gas turbine environment. The gas generator portion of the jet fuel starter used on the A7D aircraft was modified to incorporate compliant-foil gas bearings and subjected to varied demonstration test. In addition, engine starts were made under conditions which simulated normal starting gear loads. Results of the testing were very satisfactory. It is concluded that gas lubricated bearings can be used in a gas turbine application and further testing is encouraged.

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