Power plants – Combustion products used as motive fluid – Combined with regulation of power output feature
Patent
1980-07-30
1983-07-05
Garrett, Robert E.
Power plants
Combustion products used as motive fluid
Combined with regulation of power output feature
91167R, F02C 918
Patent
active
043910920
ABSTRACT:
An actuator particularly adapted to control a plurality of bleed air valves of a gas turbine engine is disclosed. The actuator comprises n solenoid pilot valves where 2.sup.n is the number of actuation positions and 2.sup.n -1 is the number of bleed air valves to be actuated. The actuator receives as n bit digital signal corresponding to the number of bleed air valves to be actuated for a particular operating condition of the engine and the actuator converts this number into a correct mechanical position. The conversion is accomplished by a series of telescoping cylinder and piston assemblies each having an expandable chamber. Each chamber is independently contracted or expanded by an associated pilot valve controlling a pressure source in response to the presence or absence of a particular bit in the digital word. The size of the expandable chamber of each assembly is related to the others by ascending powerts of two and correspond to a bit position in the digital input signal.
REFERENCES:
patent: 2912008 (1959-11-01), Blackburn
patent: 2967545 (1961-01-01), Schmidt
patent: 3114296 (1963-12-01), Smith, Jr.
patent: 3116757 (1964-01-01), Donguy et al.
patent: 3190608 (1965-06-01), Hassa
patent: 3275964 (1966-09-01), Kumm
patent: 3534720 (1970-10-01), DuBois
patent: 3537355 (1970-11-01), Bliss
patent: 3635438 (1972-01-01), Peters
patent: 3646753 (1972-03-01), Colman et al.
patent: 3882759 (1975-05-01), Formwalt et al.
patent: 3996964 (1976-12-01), McCombs
patent: 4114648 (1978-09-01), Nakajima et al.
patent: 4137710 (1979-02-01), Preti et al.
Decker Ken C.
Garrett Robert E.
Marvin William A.
The Bendix Corporation
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