Temperature control of engine case for clearance control

Details Temperature control of engine case for clearance control Temperature control of engine case for clearance control

1978-05-16

1980-12-30

Powell, Jr., Everette A.

Rotary kinetic fluid motors or pumps

With diversely oriented inlet or additional inlet for...

415175, F01D 1108

Patent

active

042420423

ABSTRACT:
Regulation of cool air admitted internally of a gas turbine engine into an annular space defined by the double wall construction consisting of the case and the outer air seals serve to control the leakage in and out of this space and the temperature of the engine case. Thus, the temperature range between the hot gas stream and the cool air acting on the engine case controls shrinkage and expansion of the case which in turn positions the seal relative to the tip of the rotating blades, which can be manifested as a function of engine power or other parameters.

REFERENCES:
patent: 3730640 (1973-05-01), Rice et al.
patent: 3736069 (1973-05-01), Beam, Jr. et al.
patent: 3742705 (1973-07-01), Sifford
patent: 3966354 (1976-06-01), Patterson
patent: 3975901 (1976-08-01), Hallinger et al.
patent: 4005946 (1977-02-01), Brown et al.
patent: 4019320 (1977-04-01), Redinger, Jr. et al.
patent: 4050843 (1977-09-01), Needham et al.
patent: 4053254 (1977-10-01), Chaplin et al.

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