Integrated control system for a gas turbine engine

Details Integrated control system for a gas turbine engine Integrated control system for a gas turbine engine

1978-05-25

1981-01-06

Garrett, Robert E.

Power plants

Reaction motor

Interrelated reaction motors

60236, 60238, 60239, F02K 306

Patent

active

042428645

ABSTRACT:
An integrated control system for a gas turbine engine of the turbofan type receives signals from a plurality of engine sensors and from the engine operator and generates control signals therefrom. A first control signal regulates the fan exhaust nozzle area in order to control inlet throat Mach number to maintain a low level of engine noise. Additional control signals regulate fuel flow to control engine thrust and fan pitch to control fan speed. A plurality of schedules are utilized to maintain a predetermined relationship between the controlled parameters and a number of fixed and calculated limits can override the control signals to prevent unsatisfactory engine performance.

REFERENCES:
patent: 3401524 (1968-09-01), Urban
patent: 3797233 (1974-03-01), Webb et al.
patent: 3932058 (1976-01-01), Harner et al.
patent: 4068469 (1978-01-01), Adamson

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