GEARBOXES FOR GAS TURBINE ENGINES

Abstract: an epicyclic power gear box for a gas turbine engine delivers torque from a low speed shaft to the primary fan. the gear box includes a planet gear, a bearing pin for the planet gear, sun gear and ring gear. the planet gear and bearing pin are arranged so that a clearance between the two is maintained during a takeoff condition for the gas turbine engine. the planet gear can be characterized by a pin clearance parameter, a ratio of bending stress neutral axis radius to rim thickness, a gear pinch ratio, and/or a ratio of average rim radius to rim thickness.

Inventor(s): Kedar S. Vaidya, Bugra H. Ertas

CPC Classification: F02C7/36 (GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines ; jet-propulsion plants ; construction of compressors or fans ; generating combustion products of high pressure or high velocity ; using gas turbines in compression refrigeration plants ))

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