Compressor case with controlled thermal environment

Details Compressor case with controlled thermal environment Compressor case with controlled thermal environment

1990-09-12

1992-07-07

Look, Edward K.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between blade edge and static part

415177, F01D 1100

Patent

active

051277948

ABSTRACT:
The thermal environment to which the engine's compressor case is subjected is controlled and the coefficient of expansion selected for the stator and rotor components are suitably matched to improve engine performance by reducing radial clearances during part power engine operations. A thermal barrier around the engine case by virtue of a heat shield attached to the customary case flanges and the coaxially mounted spaced stator vanes forming an inner case defining cavities sandwiching the engine case and holds the metal temperature at a value higher than would otherwise be provided. The thermal barrier serves to isolate the outer case from the engine's fan discharge air and the engine's core gas path.

REFERENCES:
patent: 3412977 (1968-11-01), Moyer et al.
patent: 3966354 (1976-06-01), Patterson
patent: 4101242 (1978-07-01), Coplin et al.
patent: 4127357 (1978-11-01), Patterson
patent: 4543039 (1985-09-01), Ruis et al.
patent: 4778337 (1988-10-01), Popp

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