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:
May. 11, 2021
Filed:
Sep. 15, 2017
Pratt & Whitney Canada Corp., Longueuil, CA;
Karan Anand, Mississauga, CA;
Farid Abrari, Mississauga, CA;
Ernest Adique, Brampton, CA;
Paul Aitchison, Hamilton, CA;
Daniel Fudge, Vaughan, CA;
Kari Heikurinen, Oakville, CA;
Paul Stone, Guelph, CA;
Tibor Urac, Mississauga, CA;
Thomas Veitch, Scarborough, CA;
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Abstract
A compressor rotor for a gas turbine engine includes a hub disposed about an axis of rotation and an outer surface forming a radially inner gaspath boundary, the outer surface defining a nominal hub diameter. A circumferential array of blades extends radially outwardly from the hub. A first inter-blade passage is defined between a first set of adjacent blades and has a first throat area. A second inter-blade passage is defined between a second set of adjacent blades and has a second throat area that is smaller than the first throat area. At least one scoop is disposed in the second inter-blade passage, the scoop defining a cavity extending radially into the outer surface of the hub relative to the nominal hub diameter.