Control of low compressor vanes and fuel for a gas turbine engin

Details Control of low compressor vanes and fuel for a gas turbine engin Control of low compressor vanes and fuel for a gas turbine engin

1989-12-11

1992-07-28

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Multiple fluid-operated motors

60 3927, F02C 954

Patent

active

051331829

ABSTRACT:
Time responsiveness to thrust demands for a fan jet engine of the type that includes twin spools and a variable inlet at the fan is enhanced by regulating air flow through the variable inlet while holding low pressure compressor speed constant. The thrust change is targeted as a function of power lever position which generates a low pressure compressor parameter as a function of engine and aircraft operating variables. This parameter is then utilized to control both the inlet variable vanes and fuel flow to 1) attain the targeted value and 2) return the engine to its steady state operating line after a given time interval.

REFERENCES:
patent: 2931168 (1960-04-01), Alexander et al.
patent: 4184327 (1980-01-01), Cornett et el.
patent: 4244181 (1981-01-01), Wiher et al.
patent: 4299088 (1981-11-01), Rowen et al.
patent: 4550565 (1985-11-01), Ozono
patent: 4928482 (1990-05-01), Pollak et al.

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