Integral cooling system for a jet engine integral starter/genera

Details Integral cooling system for a jet engine integral starter/genera Integral cooling system for a jet engine integral starter/genera

1992-07-06

1993-08-31

Davis, Jr., Albert W.

Heat exchange

Movable heating or cooling surface

16510425, 16510433, 310 54, 310 57, F28D 1502

Patent

active

052400697

ABSTRACT:
A new cooling system for a jet engine integral starter/generator incorporates an array of thermosyphons in the rotor of the starter/generator in an off-axis geometry. The condenser sections of each thermosyphon extend out from the rotor into a coolant flowpath. Fins surrounding the condenser sections are oriented to increase the flow of coolant around the starter/generator. Asymmetrical balancing wicks partially cover the inside wall of the evaporator sections of each thermosyphon. The balancing wicks have the general shape assumed by a liquid working fluid during off-axis rotation. The wick cross-sectional shape is generally that of a crescent. The balancing wicks absorb working fluid when the rotor is not rotating so that the rotor will have generally the same balance at startup as it will have during full rotational speed operation.

REFERENCES:
patent: 3801843 (1974-04-01), Corman et al.
patent: 3902819 (1975-09-01), Holchendler et al.
patent: 4136516 (1979-01-01), Corsmeier
patent: 4546604 (1985-10-01), Moore et al.
patent: 4602177 (1986-07-01), Eckels et al.
SAE Technical Paper Series, Technology Review: Utilizing Rotating Thermosyphon Technology in Aircraft Thermal Management and Control Kirk L. Yerkes, 901961, pp. 1-11, The Engineering Society for Advancing Mobility Land Sea Air and Space.

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