Tip clearance control apparatus and method

Details Tip clearance control apparatus and method Tip clearance control apparatus and method

1991-04-16

1993-05-25

Bertsch, Richard A.

Power plants

Combustion products used as motive fluid

60 3975, 415115, F02C 300, F02C 500

Patent

active

052129403

ABSTRACT:
In a gas turbine engine, conduit delivers pressurized cooling air to a selected group of hollow struts at a temperature sufficient to induce thermal contraction of the selected group of hollow struts, thereby opposing a downward shift in the rotor axis during high power engine operation, and maintaining a circumferentially uniform tip clearance. Air baffles disposed in the cooled struts ensure radially uniform thermal contraction and efficient heat transfer.

REFERENCES:
patent: 2994472 (1961-08-01), Botje
patent: 3742705 (1973-07-01), Sifford
patent: 4034558 (1977-07-01), Korta et al.
patent: 4466239 (1984-08-01), Napoli et al.
patent: 4648241 (1987-03-01), Putman et al.
patent: 4704861 (1987-11-01), Mowill

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