Active clearance control

Details Active clearance control Active clearance control

1983-11-03

1986-03-18

Croyle, Carlton R.

Rotary kinetic fluid motors or pumps

With diversely oriented inlet or additional inlet for...

415175, 60726, F02C 716

Patent

active

045765472

ABSTRACT:
The bore of the compressor for a gas turbine engine is heated by selectively bleeding compressor air from downstream stages so that heating only occurs at discreet times during the engine operating envelope. The bled air is admitted into the bore at the mid-stage station of the compressor wherein the compressor disks are scrubbed so as to expand and close the gap between the outer air seal and tips of the compressor blades during cruise of the aircraft and prevented from heating the disks during the high powered operations of the engine.

REFERENCES:
patent: 2837270 (1958-06-01), Chapman
patent: 2848156 (1958-08-01), Oppenheimer
patent: 3031132 (1962-04-01), Davies
patent: 3647313 (1972-03-01), Koff
patent: 3742706 (1973-07-01), Klompas
patent: 3844110 (1974-10-01), Widlansky et al.
patent: 3945759 (1976-03-01), Bobo
patent: 4127988 (1978-12-01), Becker
patent: 4230436 (1980-10-01), Davison
patent: 4268221 (1981-05-01), Monsarrat et al.
patent: 4329114 (1982-05-01), Johnston et al.

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