Variable area nozzle including a plurality of convexly vanes...

Details Variable area nozzle including a plurality of convexly vanes... Variable area nozzle including a plurality of convexly vanes...

2003-10-23

2008-12-02

Rodriguez, William H (Department: 3746)

Power plants

Reaction motor

Particular exhaust nozzle feature

C239S265390, C181S213000

Reexamination Certificate

active

07458221

ABSTRACT:
A variable area nozzle comprising a concentric support and a plurality of convexly contoured self sealing vanes is disclosed and claimed. The vanes are circumferentially and rotatably mounted to the concentric support forming a nozzle infinitely positionable between a first position corresponding to a minimum area nozzle and a second position corresponding to a maximum area nozzle. A closer, which is preferably a shape memory alloy (SMA), urges the nozzle toward the first position corresponding to a minimum area nozzle. Periodically spaced openers act between adjacent vanes to urge the nozzle to a second position corresponding to a maximum area nozzle.

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U.S. Appl. No. 10/693,853, filed Oct. 23, 2003, Arnold.

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