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:
Feb. 04, 2020
Filed:
Jun. 20, 2017
Applicant:
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Inventor:
Robert L. Fortenbaugh, Pantego, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C 13/16 (2006.01); B64C 27/57 (2006.01); B64C 29/00 (2006.01);
U.S. Cl.
CPC ...
B64C 13/16 (2013.01); B64C 27/57 (2013.01); B64C 29/0033 (2013.01);
Abstract
A control system having at least a first control loop and a second control loop for determining the upper and lower cyclic limit increments due to the contribution of collective pitch in rotorcraft based at least on nacelle angle and airspeed. The aircraft is more robustly controlled by generating flight control limits for the aircraft, modifying the flight control limits based upon impending hazardous flight conditions, and adjusting a size of a flight control envelope as the aircraft transitions between non-hazardous flight conditions and hazardous flight conditions.