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:
Mar. 24, 2026
Filed:
Aug. 23, 2024
Pratt & Whitney Canada Corp., Longueuil, CA;
Eric S. Durocher, Boucherville, CA;
Michel Labrecque, Ste-Julie, CA;
Pratt & Whitney Canada Corp., Longueuil, CA;
Abstract
An assembly for an aircraft powerplant includes a compressor rotor and an air system. The compressor rotor includes a plurality of compressor blades. The compressor blades are arranged circumferentially around the axis in a compressor blade array and are disposed in a flowpath. The air system includes an air source, an air injector and an air circuit fluidly coupling the air source to the air injector. The air system is configured to direct compressed air from the air source to the air injector through the air circuit. The air injector is configured to direct a stream of the compressed air into the flowpath and against one or more of the compressor blades to apply a rotational driving force onto the compressor rotor about an axis. The flowpath has a radial height at an injector location. The air injector projects a radial distance into the flowpath at the injector location.