Multipurpose auxiliary power unit

Details Multipurpose auxiliary power unit Multipurpose auxiliary power unit

1989-04-11

1990-04-17

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 39142, 60 3933, F02C 7268

Patent

active

049168932

ABSTRACT:
A single gas turbine may be made alternately useable as an auxiliary power unit, a load compressor, an air turbine starter, or an air turbine starter motor by placing a selectively operable clutch 38 between a centrifugal compressor 10 and a turbine wheel 30, by placing a valve 58 in ducting 48, 50, 52, 54 extending from the compressor 10 to a combustor 44, and by providing variable inlet vanes 24 at the inlet 20 to the compressor 10. By appropriate operation of the valve 58, the clutch 38, and the vanes 24, each of the foregoing functions can be obtained.

REFERENCES:
patent: 3481145 (1969-12-01), Oldfield
patent: 4092824 (1978-06-01), Friedrich
patent: 4237692 (1980-12-01), Ahrens et al.
patent: 4630436 (1986-12-01), Frutschi
patent: 4686822 (1987-08-01), Frutschi

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