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. 13, 2020
Filed:
May. 03, 2017
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Sylvain Lamarre, Boucherville, CA;
Jeremie Hebert, Napierville, CA;
Pierre Alexandre, St-Jean-sur-Richelieu, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 9/28 (2006.01); F02C 7/26 (2006.01); F02C 9/44 (2006.01); B64D 31/06 (2006.01);
U.S. Cl.
CPC ...
F02C 9/28 (2013.01); B64D 31/06 (2013.01); F02C 7/26 (2013.01); F02C 9/44 (2013.01); F05D 2260/85 (2013.01); F05D 2270/304 (2013.01); F05D 2270/3011 (2013.01); F05D 2270/708 (2013.01);
Abstract
Herein provided are methods and systems for setting a fuel flow schedule for starting a gas turbine engine of an aircraft. Aircraft speed and engine rotational speed are obtained. A compressor inlet recovered pressure is estimated by combining a first component influenced by the aircraft speed and a second component influenced by the engine rotational speed, and a fuel flow schedule is selected for engine start in accordance with the estimated compressor inlet recovered pressure.