Pressurized nacelle compartment for active clearance controlled

Details Pressurized nacelle compartment for active clearance controlled Pressurized nacelle compartment for active clearance controlled

1983-03-07

1985-01-15

Casaregola, Louis J.

Power plants

Reaction motor

Method of operation

602261, 60266, 60 3907, 60 3975, 60 3983, 415116, F02C 718

Patent

active

044931840

ABSTRACT:
Methods and apparatus for improving the thrust specific fuel consumption (TSFC) of a gas turbine engine employing an exterior active clearance control system are disclosed.
The pressure within the nacelle compartment to which active clearance control air is discharged is operated under altitude cruise conditions at a level on the order of one to two and one-half pounds per square inch (1-21/2 psi) above the ambient atmosphere. Flow discharging from the nacelle is directed through an aft facing vent nozzle for purposes of thrust recovery.

REFERENCES:
patent: 2853854 (1958-09-01), Avery et al.
patent: 3058302 (1962-10-01), Kuzyk
patent: 4163366 (1979-08-01), Kent
patent: 4232513 (1980-11-01), Pearson et al.
patent: 4304093 (1981-12-01), Schulze

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