Disclosed is a drive device, in particular for a flying vehicle such as an aircraft or a spacecraft, comprising at least one engine and a device for cooling the engine, the device for cooling the engine comprising a cryogenic refrigerator, i.e. refrigerating to a temperature between −100° C. and −273° C., the refrigerator comprising a working circuit forming a loop and containing a working fluid, the working circuit forming a cycle comprising, in series: a mechanism for compressing the working fluid, a mechanism for cooling the working fluid, a mechanism for expanding the working fluid and a mechanism for heating the working fluid, the refrigerator comprising a portion for heat exchange between the working fluid expanded in the expansion mechanism and the engine, the refrigerator being configured to produce a first determined maximum refrigeration power, characterized in that the device for cooling the engine further comprises an additional refrigeration system comprising a cryogenic fluid store that can be brought into heat exchange with the refrigerator and/or the engine, the additional refrigeration system being configured to supply a second determined maximum refrigeration power to the refrigerator and/or to the engine when the cryogenic fluid is brought into heat exchange with the refrigerator and/or the engine.
DRIVE DEVICE, FLYING VEHICLE AND METHOD FOR COOLING A MOTOR
2024-02-15
Patent
Elektronische Ressource
Englisch
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