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SPACE PATENTS BY
Aerospace Assignees
Aerospace Inventors
Time Lines

Aircraft gas turbine engine blade tip clearance control

Invented by: John Erik Hershey
Ballston Lake, NY

Brock Estel Osborn
Niskayuna, NY

Donald Lee Gardner
West Chester, OH

Rafael Jose Ruiz
Liberty Township, OH

William Lee Herron
Springdale, OH

Originally Assigned to: General Electric Company
Schenectady, NY
[Now assigned to . . .]

Issued:2012-02-28
Filed:2007-08-03
Application No:11833596
Examined by:Tran; Khoi

A method and system adjusts blade tip clearance between rotating aircraft gas turbine engine blade tips and a surrounding shroud in anticipation of and before an engine command that changes an engine rotational speed. The method may include determining when to begin adjusting the tip clearance by expanding or contracting the shroud before the engine command and may be based on monitored aircraft and/or aircraft crew data indicative of the engine. The aircraft and/or aircraft crew data may include communications between aircraft crew and air traffic control authorities or air traffic control surrogates. Determining when to begin adjusting the tip clearance may include using learning algorithms which may use the aircraft gas turbine engine's operating experience and/or operating experience of other jet engines on an aircraft containing the aircraft gas turbine engine and/or on other aircraft.

[pdf] U.S. Pat. No. 8,126,628

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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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