Clearance control for gas turbine engine

Details Clearance control for gas turbine engine Clearance control for gas turbine engine

1975-12-05

1978-01-24

Garrett, Robert E.

Power plants

Reaction motor

Interrelated reaction motors

60 3966, 415116, 415127, 415128, 415138, F02C 716

Patent

active

040696626

ABSTRACT:
The clearance between the outer air seal of a gas turbine engine and the tip of the turbine rotor is controlled by selectively turning on and off or modulating the cool air supply which is directed in proximity to the air seal supporting structure so as to control its thermal growth. The cooling causes shrinkage thereby holding the clearance low and effectively reducing fuel consumption.

REFERENCES:
patent: 2811833 (1957-11-01), Brofitt
patent: 2994472 (1961-08-01), Botje
patent: 3141651 (1964-07-01), Moyer
patent: 3301526 (1967-01-01), Chamberlain
patent: 3453825 (1969-07-01), May et al.
patent: 3583824 (1971-06-01), Smuland et al.
patent: 3736069 (1973-05-01), Beam et al.
patent: 3736751 (1973-06-01), Fuller
patent: 3742705 (1973-07-01), Sifford
patent: 3751909 (1973-08-01), Kohler
patent: 3869222 (1975-03-01), Rahnke et al.
patent: 3957391 (1976-05-01), Vollinger
patent: 3966354 (1976-06-01), Patterson
patent: 3975901 (1976-08-01), Hallinger et al.
patent: 3986720 (1976-10-01), Knudsen et al.
patent: 4005946 (1977-02-01), Brown et al.

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