Rtx Corporation

Raytheon Technologies Corporation

Utc Fire and Security Corporation

Nancy Poisson

Marc J Muldoon

Michael D Greenberg

Neil J Terwilliger

Lance L Smith

Marco Wo

Martin Richard Amari

Christian Maria Netter

Christopher D Ramsey

Arnab Roy

Daniel Joseph Nelsen

Lee M Drozdenko

Mark T Hofmann

Paula Kwon

Dennis P Cronin

A hybrid electric engine of an aircraft includes a compressor, a turbine operably connected to the compressor via a variable gear ratio gearbox and a combustor configured to drive the turbine via a flow of combustion products. An electric motor is operably connected to the variable gear ratio rear box and configured to input rotational energy into the gearbox. The input of rotational energy into the gearbox from the electric motor changes a rotational speed of one of the compressor or the turbine relative to the other of the compressor or the turbine.

Hybrid electric multiple shaft core

Examples described herein provide a computer-implemented method for managing battery usage for a hybrid electric engine of an aircraft. The method includes receiving a flight plan comprising flight plan data for a flight of an aircraft. The method further includes receiving battery data about a battery system of the aircraft. The method further includes determining waypoints for when to apply electric power from the battery system based at least in part on the flight plan data and the battery data. The method further includes controlling, based at least in part on the waypoints, an electric motor while the flight plan is executed. The method further includes updating, while the flight plan is executed, the waypoints based at least in part on data received during the flight.

Hybrid electric engine power distribution

An engine system of an aircraft includes a gas turbine engine comprising at least one spool and at least one electric machine operably coupled with the at least one spool. A controller is configured to detect if the at least one spool of the gas turbine engine is in or is approaching an overspeed condition and apply a load to the at least one spool via the at least one electric machine.

Turbine over-speed brake for hybrid electric gas turbine engine

Digital video recorder

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Avon, CT, United States of America

Nancy Poisson