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:
Sep. 22, 2020
Filed:
Dec. 08, 2017
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Matthew Chiasson, Milton, CA;
Jason Tremblay, Montréal, CA;
Leonard Bezman, Brossard, CA;
Ioan Sabau, Montréal, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 7/26 (2006.01); F01D 25/34 (2006.01); F01D 19/02 (2006.01); F01D 5/02 (2006.01); F01D 21/08 (2006.01); F02C 7/268 (2006.01); F01D 21/06 (2006.01); F02C 9/28 (2006.01);
U.S. Cl.
CPC ...
F02C 7/26 (2013.01); F01D 5/027 (2013.01); F01D 19/02 (2013.01); F01D 21/06 (2013.01); F01D 21/08 (2013.01); F01D 25/34 (2013.01); F02C 7/268 (2013.01); F02C 9/28 (2013.01); F05D 2240/24 (2013.01); F05D 2260/80 (2013.01); F05D 2260/85 (2013.01); F05D 2260/941 (2013.01); F05D 2270/304 (2013.01); F05D 2300/5021 (2013.01);
Abstract
A system and method for rotor bow mitigation for a gas turbine engine are provided. An elapsed time since a shutdown of the engine and an idle operation time of the engine prior to the shutdown are determined. A rotor bow mitigation period is determined based on the elapsed time and the idle operation time and, prior to initiating a start sequence of the engine, the engine is motored for a duration of the rotor bow mitigation period.