Power plants – Reaction motor – Interrelated reaction motors
Patent
1993-02-03
1994-09-27
Bertsch, Richard A.
Power plants
Reaction motor
Interrelated reaction motors
60 39142, F02C 7262
Patent
active
053498143
ABSTRACT:
A method and assembly are effective for air-starting an aircraft gas turbine engine having a fan powered by a low pressure turbine through a first shaft, and a compressor powered by a high pressure turbine through a second shaft disposed coaxially therewith. A gear train is selectively operatively joined between the first and second shafts by selectively engaging a first clutch for transmitting torque through the first clutch only in one direction from the first shaft to the second shaft when the fan is windmilling for driving the second shaft to allow an air-start of the gas turbine engine during flight. In a preferred embodiment, a second clutch is operatively joined to the gear train and is selectively engageable at speeds of the second shaft below a predetermined release speed, and disengageable at the release speed and above for disconnecting the air-start assembly once the engine has been started.
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Ciokajlo John J.
O'Brien Michael T.
Bertsch Richard A.
General Electric Company
Herkamp Nathan D.
Squillaro Jerome C.
Wicker William J.
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