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SPACE PATENTS BY
Aerospace Assignees
Aerospace Inventors
Time Lines

Variable area nozzle for gas turbine engines driven by shape memory alloy actuators

Invented by: Nancy M. Rey
Glastonbury, CT

Robin M. Miller
Ellington, CT

Thomas G. Tillman
West Hartford, CT

Robert M. Rukus
Vernon, CT

John L. Kettle
Vernon, CT

Originally Assigned to: United Technologies Corporation
Hartford, CT
[Now assigned to . . .]

Issued:2006-02-28
Filed:2004-01-12
Application No:10755566
Examined by:Fenstermacher; David M.

A gas turbine engine includes a variable area nozzle having a plurality of flaps. The flaps are actuated by a plurality of actuating mechanisms driven by shape memory alloy (SMA) actuators to vary fan exist nozzle area. The SMA actuator has a deformed shape in its martensitic state and a parent shape in its austenitic state. The SMA actuator is heated to transform from martensitic state to austenitic state generating a force output to actuate the flaps. The variable area nozzle also includes a plurality of return mechanisms deforming the SMA actuator when the SMA actuator is in its martensitic state.

[pdf] U.S. Pat. No. 7,004,047

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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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