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SPACE PATENTS BY
Aerospace Assignees
Aerospace Inventors
Time Lines

Rotor collective pitch VS Mu to control flapping and mast/rotor tilt to control rotor RPM

Invented by: Jay W. Carter, Jr.
Burkburnett, TX

Jeffrey R. Lewis
Wichita Falls, TX

Originally Assigned to: Cartercopters, L.L.C.
Wichita Falls, TX
[Now assigned to . . .]

Issued:2008-11-11
Filed:2005-11-16
Application No:11280064
Examined by:Mansen; Michael R.

A method of operating a rotor aircraft involves measuring an airspeed of the aircraft and a rotational speed of the rotor. A controller determines a Mu of the rotor based on the airspeed of the aircraft and the rotational speed of the rotor. The controller varies the collective pitch of the rotor blades in relationship to the Mu, from an inertia powered jump takeoff, through high speed high advance ratio flight, through a low speed landing approach, to a zero or short roll flare landing. In addition as the rotor is unloaded and the rotor slows down, the controller maintains a minimum rotor RPM with the use of a tilting mast.

[pdf] U.S. Pat. No. 7,448,571

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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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