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Technical Paper

A LOOK AT SOME TURBINE BEARING PROBLEMS
1956-01-01
560166
The heavily loaded thrust bearing in aircraft turbines must be 100% reliable, which requires a different philosophy from that on which catalog ratings are based, namely, 10% of failures. Principal problems are: 1) to raise the minimum life of bearings regardless of the wide spread between minimum and maximum, and 2) to raise the permissible operating temperature. Metallurgical improvements offer the best possibilities for gain in 1 and 2 above. Other factors such as geometry, finish, and dimensional accuracy are helpful in category 1 but do not promise large gains.
Technical Paper

CURRENT STATUS OF AXIAL-FACE SEALS
1956-01-01
560167
A description of the application of Axial Face Seals to Aircraft Gas Turbine Main Shaft Bearings, Gear Boxes or Accessory Pads and Accessories; their limitations with respect to sealing media, temperatures, pressures and rubbing surface speeds; the influence of these factors on the selection of materials of construction. A statement of the current status of the art and projected future requirements.
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