Back to results
US 10,767,566 B2Granted
Electric propulsion motor cooling system and method
AssigneeHamilton Sundstrand Corporation
InventorDebabrata Pal
Life of this patent
Estimating the term…
Abstract
An electric propulsion system for a gas turbine engine may comprise an electric motor disposed within a nacelle of the gas turbine engine, wherein the electric motor is configured to receive a bypass air from a fan bypass duct for cooling the electric motor and the electric motor is configured to drive a low speed shaft of the gas turbine engine.
Claims20
An electric propulsion system for a gas turbine engine, comprising:
- an electric motor disposed within a nacelle of the gas turbine engine, an inner surface of the nacelle at least partially defines a fan bypass duct, and the electric motor is disposed radially outward from the fan bypass duct;
- wherein the electric motor is configured to receive a bypass air from the fan bypass duct for cooling the electric motor and the electric motor is configured to drive a low speed shaft of the gas turbine engine.
A gas turbine engine, comprising:
- a nacelle comprising an inner surface at least partially defining a fan bypass duct;
- a low speed shaft configured to rotate about a longitudinal axis of the gas turbine engine;
- and
- an electric propulsion system, comprising:
- an electric motor disposed within the nacelle, the electric motor is disposed radially outward from the fan bypass duct;
- wherein the electric motor is configured to receive a bypass air from the fan bypass duct for cooling the electric motor and the electric motor is configured to drive the low speed shaft.
3 more elements
A method of operating an electric propulsion system for a gas turbine engine, comprising:
- sending, by an electric motor controller, a power signal to an electric motor, wherein the electric motor is disposed in a nacelle for the gas turbine engine, an inner surface of the nacelle partially defines a fan bypass duct, and the electric motor is disposed radially outward from the inner surface;
- rotating, by the electric motor, a drive shaft in response to receiving the power signal, wherein the drive shaft extends through the fan bypass duct;
- driving, by the electric motor, a low speed shaft via the drive shaft in response to the rotating;
- sending, by the electric motor controller, a second power signal to a motor cooling door, wherein the motor cooling door is configured to open in response to the second power signal;
- and
- receiving, by the electric motor, fan bypass duct air for cooling the electric motor in response to the motor cooling door opening.
3 more elements
Dependencies are inferred from the claim text.