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SPACE PATENTS BY
Aerospace Assignees
Aerospace Inventors
Time Lines

Reaction drive rotor/wing variable area nozzle

Invented by: Dennis K. Kennedy
Mesa, AZ

Neal W. Muylaert
Apache Junction, AZ

William J. Bigbee-Hansen
Renton, WA

Originally Assigned to: The Boeing Company
Chicago, IL
[Now assigned to . . .]

Issued:2010-11-23
Filed:2006-03-22
Application No:11387189
Examined by:Dinh; Tien

In an exemplary variable area nozzle, a fixed duct section has an inlet and an outlet oriented approximately perpendicular to the inlet. A controllable nozzle member is disposed adjacent the outlet of the fixed duct section. The controllable nozzle member has an area that is adjustable to maintain a substantially constant nozzle pressure ratio. The controllable nozzle member may include first and second flap doors hinged and pivotable in opposite directions between an open position and a closed position and that also may be hinged and pivotable in a same direction so thrust from gas exiting the nozzle is vectorable. When disposed in rotor tips of an aircraft capable of rotary wing flight and fixed wing flight, the variable area nozzle may maintain a substantially constant nozzle pressure ratio near an optimized nozzle pressure ratio as the aircraft transitions from rotary wing flight to fixed wing flight.

[pdf] U.S. Pat. No. 7,837,141

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This information is part of a study by Oasis Global, Inc. of all space inventions filed at the United States Patent and Trademark Office, and is provided for informational purposes only. It is not an endorsement of any particular assignee, inventor or invention. Although Peter A. Koziol represents inventors and assignees of space inventions he does not represent all of the inventors and assignees listed. The prosecuting attorney agent or firm for each patent is identified by the United States Patent and Trademark Office in the patent specfication, which can be viewed by clicking on the patent image or downloading the patent document. For more information regarding Mr. Koziol's background and experience, or to learn more about space inventions, please contact Mr. Koziol.

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