Power plants – Combustion products used as motive fluid – Combined with regulation of power output feature
Patent
1992-12-30
1994-01-11
Bertsch, Richard A.
Power plants
Combustion products used as motive fluid
Combined with regulation of power output feature
60405, 244 53R, 244 78, B64C 1336
Patent
active
052770206
ABSTRACT:
A control system for hydraulically controlling variable engine structures is disclosed in which the control system utilizes hydraulic fluid identical to that used by the aircraft hydraulic control circuit. A high pressure hydraulic pump, driven by the aircraft engine, may be interconnected with the aircraft hydraulic control circuit, or may be associated with a separate fluid reservoir, to supply pressurized hydraulic fluid to the actuators for controlling the variable engine structures. The engine control circuit also includes a hydraulic pressure modulator to modulate the pressure of the fluid supplied to the actuator and a selector connected between the high pressure pump and, the modulator and the aircraft control circuit to selectively supply the high pressure hydraulic fluid from the pump to either the engine control circuit, or to the aircraft control circuit. An electronic control system, which may comprise the aircraft computer, controls the operation of the selector as well as other parameters of the system.
REFERENCES:
patent: 3527143 (1970-09-01), Hayter
patent: 3662550 (1972-05-01), Lichtfuss
patent: 3851721 (1974-12-01), Comer, Jr. et al.
patent: 3952510 (1976-04-01), Peterson
patent: 4428196 (1984-01-01), Boehringer
patent: 4533097 (1985-08-01), Aldrich
patent: 4711089 (1987-12-01), Archung
patent: 5100082 (1992-03-01), Archung
Dehu Michel P.
Hebert Pierre
Hebraud Guy R. E.
Pean Eric C.
Bertsch Richard A.
Kocharov Michael I.
Societe Nationale d'Etude et de Construction de Motors d'Aviatio
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