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SPACE PATENTS BY
Aerospace Assignees
Aerospace Inventors
Time Lines

Propulsive anti-torque system for rotorcraft

Invented by: Dudley E. Smith
Arlington, TX

Walter C. Joiner
Arlington, TX

Paul J. Madej
Grand Prairie, TX

Charles L. Hollimon
North Richland Hills, TX

Daniel B. Robertson
Southlake, TX

Originally Assigned to: Bell Helicopter Textron Inc.
Fort Worth, TX
[Now assigned to . . .]

Issued:2010-06-08
Filed:2004-09-28
Application No:11662559
Examined by:Dinh; Tien

A rotorcraft having an enhanced configuration in which a simple wing and a propulsive anti-torque system are combined is disclosed. The propulsive anti-torque system includes an anti-torque thruster system in which a variable pitch fan is installed internal to the tail boom of the rotorcraft and an anti-torque thruster nozzle is mounted at the extremity of the tail boom. The fan is driven directly from the main rotor drive. The configuration and location of the fan allows the primary exhaust from the engine to be mixed with the compressed air flow from the fan. The mixed air flow from the fan and the engine passes through the tail boom and out the thruster nozzle.

[pdf] U.S. Pat. No. 7,731,121

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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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