The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 20, 2019
Filed:
May. 12, 2017
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Christopher Mike Bothwell, Grapevine, TX (US);
Jillian Samantha Alfred, Ft. Worth, TX (US);
Sung Kyun Kim, Bedford, TX (US);
Marko Vuga, Arlington, TX (US);
Matthew Hendricks, Grand Prairie, TX (US);
Mark Wasikowski, Keller, TX (US);
Thomas Parham, Colleyville, TX (US);
Michael Reaugh Smith, Colleyville, TX (US);
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Abstract
In accordance with an embodiment of the present invention, a method of operating a rotorcraft includes receiving a measured yaw rate from a yaw rate sensor or a measured lateral acceleration from a lateral acceleration sensor of the rotorcraft, filtering the measured yaw rate or the measured lateral acceleration using a filter to form a filtered measured yaw rate or a filtered measured lateral acceleration, and regulating a yaw rate or a lateral acceleration of the rotorcraft based on the measured yaw rate or the measured lateral acceleration. The filter includes a bandpass characteristic or a notch characteristic, and the filtering is configured to reduce lateral vibrations caused by airflow in a tail section of the rotorcraft.