TRENDS OF ROLLING-CONTACT BEARINGS AS APPLIED TO AIRCRAFT GAS-TURBINE ENGINES

摘要

A review of the present and future trends of rolling-contact bearings for aircraft, gas-turbine engines indicates that while rolling-con¬tact bearings are satisfactory for present production engines, such bearings for future, higher output aircraft engines require extensive development. The specific requirements for rolling-contact bearings for future aircraft gas-turbine engines are very severe. Operating temperatures to 750° F, turbine soak-back temperatures to 1000° F, thrust loads to 50,000 pounds, and DN values to 3.5X106 are desired if possible of attainment. (DN value is the product of the bearing bore in millimeters and shaft speed in rpm.).