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:
Jul. 29, 2025
Filed:
Jan. 30, 2024
Pratt & Whitney Canada Corp., Longueuil, CA;
Louis-Philippe Larose, St-Sabine, CA;
Pratt & Whitney Canada Corp., Longueuil, CA;
Abstract
A method of controlling an aircraft propulsion system in an aircraft susceptible to ground resonance is provided. The method includes: providing an aircraft having an aircraft propulsion system and a rotary blade propulsion unit, the aircraft propulsion system having an electric motor and a gearbox, wherein the electric motor is in drive communication with the gearbox and the gearbox is in drive communication with the rotary blade propulsion unit; determining the presence or absence of a parameter indicative of a ground resonance condition; and controlling the electric motor to deliver an amount of torque to the gearbox to drive the rotary blade propulsion unit to produce enough lift to make the aircraft airborne when the presence of the parameter indicative of the ground resonance condition is determined.