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. 14, 2017
Filed:
Jun. 05, 2014
Applicant:
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Inventors:
Joseph M. Schaeffer, Cedar Hill, TX (US);
Jignesh Patel, Trophy Club, TX (US);
Eric O'Neill, Great Mills, MD (US);
Assignee:
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64D 31/00 (2006.01); B64C 19/00 (2006.01); G05D 1/00 (2006.01); B64C 27/54 (2006.01); B64C 27/57 (2006.01);
U.S. Cl.
CPC ...
B64D 31/00 (2013.01); B64C 19/00 (2013.01); B64C 27/54 (2013.01); G05D 1/0072 (2013.01); B64C 27/57 (2013.01);
Abstract
A method of preserving rotor speed during a one engine inoperative operation of an rotorcraft, the method can include: detecting a failure of a first engine; monitoring an engine parameter associated with a second engine; using a computer processor to compare the engine parameter to an engine limit; and commanding a decrease collective pitch command when the engine parameter is within a predefined range of the engine limit.