Pumps – Condition responsive control of drive transmission or pump...
Patent
1989-12-26
1991-08-13
Fox, John C.
Pumps
Condition responsive control of drive transmission or pump...
475 2, 475 5, 60 3933, F04B 3904
Patent
active
050392816
ABSTRACT:
An apparatus for supplying compressed air to the auxiliary system of a vehicle such as an aircraft, or other device powered by a gas turbine engine, comprises an auxiliary compressor which is connected by a differential to the main drive shaft of the compressor of the gas turbine engine. A controller receives a signal from a pressure sensor at the output of the auxiliary compressor representing the pressure and/or flow rate of the compressed air discharged from the auxiliary compressor and compares that signal with a signal from the auxiliary system representing its requirements for compressed air which can be set at predetermined levels or dynamically determined during operation of the vehicle. The controller is effective to control a variable speed motor connected to the differential which speeds up or slows down the auxiliary compressor and thus varies the compressed air output from the auxiliary compressor to the auxiliary system of the vehicle.
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Fox John C.
General Electric Company
Squillaro Jerome C.
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