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:
Sep. 23, 2025
Filed:
Dec. 04, 2019
Rolls-royce North American Technologies Inc., Indianapolis, IN (US);
Richard Keller, Indianapolis, IN (US);
Dwayne Bevis, Bloomington, IN (US);
Rolls-Royce North American Technologies Inc., Indianapolis, IN (US);
Abstract
A hybrid propulsion system for an aircraft includes a gas turbine engine, an energy storage device, at least one propulsor configured to use energy provided by one or both of the gas turbine engine and the energy storage device to provide thrust. The system also includes a controller configured to vary the power provided to the propulsor(s) in response to a signal. The signal may be provided manually by a user of the system or automatically. Automatic signals may be indicative of a threat to the aircraft, geographical location of the aircraft, altitude of the aircraft, or ingestion of particles into the gas turbine engine.