Complaint Foil Gas Lubricated Bearing
Final rept. Apr 1972-May 1973
AIRESEARCH MFG CO OF ARIZONA PHOENIX
Pagination or Media Count:
A series of demonstration tests, similar to those required for engine qualification, were conducted on a gas turbine engine using gas lubricated complaint foil bearings. The engine operated successfully throughout the water ingestion and dust ingestion tests. When subjected to high-yaw maneuver rates, which subjected the bearings to high gyroscopic moment loads, the ultimate load capacity of the bearings was reached. When subjected to high vibration, structural resonance was incurred which amplified the input vibration at the bearing carrier. The forward journal bearing did not survive the test but its vibrational loading was 5 times what was originally intended. Results of the overtemperature test indicated that the present bearing coating is acceptable up to 550 deg F, but higher temperature coatings would be required if the bearings should be installed in new, advanced-design engines.
- Machinery and Tools
- Jet and Gas Turbine Engines