Propulsion system cooling control
AssigneeRaytheon Technologies Corporation
InventorsFrederick M. Schwarz, Michael Winter
Life of this patent
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Abstract
A propulsion system includes an electric fan propulsion motor with a plurality of propulsion motor windings. The propulsion system also includes a means for controlling a flow rate of a working fluid through a cryogenic working fluid flow control assembly to the propulsion motor windings. The propulsion system further includes a controller operable to control supplying a pre-cooling flow of the working fluid from a cryogenic liquid reservoir through the cryogenic working fluid flow control assembly to the propulsion motor windings.
Claims20
A propulsion system comprising:
- an electric fan propulsion motor comprising a plurality of propulsion motor windings;
- a means for controlling a flow rate of a working fluid through a cryogenic working fluid flow control assembly to the propulsion motor windings, wherein the cryogenic working fluid flow control assembly comprises a manifold and a purge valve proximate to a housing of the electric fan propulsion motor;
- a means for cryogenic cooling comprising a cryogenic liquid reservoir;
- and
- a controller operable to control supplying a pre-cooling flow of the working fluid from the cryogenic liquid reservoir through the cryogenic working fluid flow control assembly to the propulsion motor windings, wherein the working fluid comprises liquid air released from the cryogenic liquid reservoir, cool gaseous air, and/or a mix of liquid air and gaseous air.
A propulsion system comprising:
- an electric fan propulsion motor comprising a plurality of propulsion motor windings;
- a cryogenic cooling system configured to control a flow rate of a working fluid through a cryogenic working fluid flow control assembly to the propulsion motor windings, wherein the cryogenic working fluid flow control assembly comprises a manifold and a purge valve proximate to a housing of the electric fan propulsion motor;
- a cryogenic liquid reservoir;
- and
- a controller operable to control supplying a pre-cooling flow of the working fluid from the cryogenic liquid reservoir through the cryogenic working fluid flow control assembly to the propulsion motor windings, wherein the working fluid comprises liquid air released from the cryogenic liquid reservoir, cool gaseous air, and/or a mix of liquid air and gaseous air.
Dependencies are inferred from the claim text.