Method for maintaining blade tip clearance

Details Method for maintaining blade tip clearance Method for maintaining blade tip clearance

1988-05-02

1989-08-15

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 3915, 60 3975, 415116, 415178, F02C 712

Patent

active

048562726

ABSTRACT:
A method for periodically restoring the blade tip to annular seal clearance in a gas turbine engine (10) includes incrementing (42a, 42b) the flow of external cooling air responsive only to an accumulated engine use parameter (58).

REFERENCES:
patent: 4019320 (1977-04-01), Redinger et al.
patent: 4069662 (1978-01-01), Redinger, Jr. et al.
patent: 4213296 (1980-07-01), Schwarz
patent: 4304093 (1981-12-01), Schulze
patent: 4363599 (1982-12-01), Cline et al.
patent: 4487016 (1984-12-01), Schwarz et al.
patent: 4648241 (1987-03-01), Putman et al.

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