Active clearance control with cruise mode

Details Active clearance control with cruise mode Active clearance control with cruise mode

1989-06-23

1992-02-25

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 3975, F02C 718

Patent

active

050901931

ABSTRACT:
Flow of cooling air to a thermal clearance control system in a gas turbine engine is selectably scheduled between a normal power level versus clearance schedule and an increased efficiency cruising schedule. Selection of the cruising schedule is accompanied by a limitation on the rate of engine power increase during the period when the cruise schedule is selected.

REFERENCES:
patent: 4019320 (1977-04-01), Redinger, Jr. et al.
patent: 4304093 (1981-12-01), Schulze
patent: 4329114 (1982-05-01), Johnston et al.
patent: 4487016 (1984-12-01), Schwarz et al.
patent: 4513567 (1985-04-01), Deveau et al.
patent: 4576547 (1986-03-01), Weiner et al.
patent: 4815272 (1989-03-01), Laurello
patent: 4849895 (1989-07-01), Kervistin

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