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:
Mar. 05, 2024
Filed:
Aug. 08, 2019
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Keith Morgan, Westmount, CA;
Stephen Mah, Brossard, CA;
Philippe Beauchesne-Martel, Brossard, CA;
Eric Durocher, Vercheres, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 13/02 (2006.01); B64C 27/12 (2006.01); B64D 27/10 (2006.01); B64D 35/04 (2006.01); F01D 15/12 (2006.01); F01D 17/16 (2006.01); F02C 6/02 (2006.01); F02C 6/20 (2006.01); F02C 7/36 (2006.01); F02C 9/56 (2006.01);
U.S. Cl.
CPC ...
F01D 13/02 (2013.01); B64C 27/12 (2013.01); B64D 27/10 (2013.01); B64D 35/04 (2013.01); F01D 15/12 (2013.01); F01D 17/162 (2013.01); F02C 6/02 (2013.01); F02C 6/20 (2013.01); F02C 7/36 (2013.01); F02C 9/56 (2013.01); F05D 2220/329 (2013.01); F05D 2240/12 (2013.01); F05D 2240/60 (2013.01); F05D 2260/4031 (2013.01);
Abstract
A method of operating a multi-engine system of a rotorcraft includes, during a cruise flight segment of the rotorcraft, controlling a first engine to provide sufficient power and/or rotor speed demands of the cruise flight segment; and controlling a second engine to by providing a fuel flow to the second engine that is between 70% and 99.5% less than a fuel flow provided to the first engine. A turboshaft engine for a multi-engine system configured to drive a common load is also described.