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:
Apr. 07, 2020
Filed:
Apr. 05, 2017
Textron Innovations Inc., Providence, RI (US);
Robert Earl Worsham, II, Weatherford, TX (US);
Thomas Wayne Brooks, Grapevine, TX (US);
Textron Innovations Inc., Providence, RI (US);
Abstract
A rotorcraft with a fly-by-wire system includes a computing device having control laws. The control laws are operable to engage a stabilization maneuver in response to a perturbation of an otherwise stable operating condition of the rotorcraft, thereby returning the rotorcraft to the stable operating condition without requiring input from the pilot. One or more control laws are further operable to increase or decrease pitch angle, roll angle, yaw rate, or collective pitch angle. In representative aspects, perturbation of the stable operating condition may occur as a result of transient meteorological conditions (e.g., wind shear, wind gust, turbulence) experienced by a rotorcraft engaged in flight operations at airspeeds between 0 knots (e.g., a hover) and about 60 knots. The control laws are further operable to permit the rotorcraft to operate with Instrument Meteorological Conditions (IMC) approval at substantially all airspeeds within a normal flight envelope of the rotorcraft.