Variable area exhaust nozzle

Details Variable area exhaust nozzle Variable area exhaust nozzle

1975-04-30

1979-01-02

Husar, C. J.

Power plants

Reaction motor

Interrelated reaction motors

23926539, B64C 1506, F02K 306

Patent

active

041320689

ABSTRACT:
A variable area exhaust nozzle for a gas turbine engine comprising a plurality of arcuate flaps pivotally connected to the trailing edge of a cylindrical casing which houses the engine is provided with seals disposed within the flaps along the side edges thereof. The seals are spring biased and extensible beyond the side edges of the flaps. The seals of adjacent flaps are maintained in sealing engagement with each other when the flaps are adjusted between positions defining minimum nozzle flow area and the cruise position. Extensible, spring biased seals are also disposed within the flaps adjacent to a supporting pylon to thereby engage the pylon in a sealing arrangement. The flaps are hinged to the casing at the central portion of the flaps' leading edges and are connected to actuators at opposed outer portions of the leading edges to thereby maximize the mechanical advantage in the actuation of the flaps.

REFERENCES:
patent: 3703258 (1972-11-01), Wildner
patent: 3747341 (1973-07-01), Davis
patent: 3820719 (1974-06-01), Clark
patent: 3873027 (1975-03-01), Camboulives et al.
patent: 3892358 (1975-07-01), Gisslen

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