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:
Aug. 06, 2024
Filed:
Mar. 19, 2021
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Michael R. Mark, Montreal, CA;
Leonid Guerchkovitch, Dollard des Ormeaux, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64D 31/06 (2024.01); B60L 50/61 (2019.01); B64C 27/00 (2006.01); B64D 27/02 (2006.01); B64D 27/24 (2006.01); B64D 35/08 (2006.01);
U.S. Cl.
CPC ...
B64D 31/06 (2013.01); B60L 50/61 (2019.02); B64C 27/00 (2013.01); B64D 27/02 (2013.01); B64D 27/24 (2013.01); B64D 35/08 (2013.01); B60L 2200/10 (2013.01); B64D 27/026 (2024.01);
Abstract
A hybrid electric system for a rotorcraft can include a first thermal engine, a second thermal engine, and an electrical machine. The first thermal engine can be sized to produce a maximum first thermal engine power that is below a one-or-more-engine-inoperative (OEI) requirement power and the second thermal engine can be sized to produce a maximum second thermal engine power that is below the OEI requirement power. The electrical machine can be sized to provide at least a remaining power needed to reach the OEI requirement power in an OEI state.