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:
Dec. 27, 2022
Filed:
Aug. 08, 2019
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Keith Morgan, Westmount, CA;
Eric Durocher, Boucherville, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 3/10 (2006.01); F01D 13/02 (2006.01); F02C 9/56 (2006.01); B64D 35/04 (2006.01); F01D 15/12 (2006.01); B64C 27/12 (2006.01); B64D 27/10 (2006.01); F01D 17/16 (2006.01); F02C 6/02 (2006.01); F02C 6/20 (2006.01); F02C 7/36 (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
The turboshaft engine for a rotorcraft includes a low pressure spool having a low pressure compressor and a low pressure turbine section, and a high pressure spool having a high pressure compressor and a high pressure turbine section. The spools are independently rotatable relative to one another. The low pressure compressor section includes a mixed flow rotor. A set of variable guide vanes (VGVs) are discposed upstream of each of the low pressure and high pressure compressors, the VGVs being configured to be independently operable relative to one another.