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:
Oct. 10, 2023
Filed:
Oct. 08, 2019
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Philippe Beauchesne-Martel, Brossard, CA;
Poi Loon Tang, Montreal, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 6/02 (2006.01); F02C 6/20 (2006.01); B64D 31/12 (2006.01); F02C 9/42 (2006.01); F02C 9/28 (2006.01); B64C 27/12 (2006.01);
U.S. Cl.
CPC ...
F02C 6/02 (2013.01); B64C 27/12 (2013.01); B64D 31/12 (2013.01); F02C 6/20 (2013.01); F02C 9/28 (2013.01); F02C 9/42 (2013.01); F05D 2270/023 (2013.01); F05D 2270/052 (2013.01); F05D 2270/304 (2013.01); F05D 2270/332 (2013.01);
Abstract
The present disclosure provides methods and systems for operating a multi-engine rotorcraft. The method comprises driving a rotor of the rotorcraft with a first engine while a second engine is de-clutched from a transmission clutch system that couples the rotor and the second engine, instructing the second engine to accelerate to a re-clutching speed, and controlling an output shaft speed of the second engine during acceleration of the second engine to the re-clutching speed by applying a damping function to a speed control loop of the second engine.