Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981spie..280...71h&link_type=abstract
In: Infrared astronomy - Scientific/military thrusts and instrumentation; Proceedings of the Meeting, Washington, DC, April 21,
Astronomy and Astrophysics
Astronomy
Cooling Systems, Cryogenic Cooling, Infrared Tracking, Remote Sensors, Satellite-Borne Instruments, Space Flight, Spaceborne Astronomy, Energy Consumption, Focal Plane Devices, Gas Bearings, Spacecraft Instruments, Stirling Cycle
Scientific paper
Several types of cryogenic cooling systems for the focal planes and optical elements in sensors aboard orbiting spacecraft have been developed. (1) The cryogenic radiator is very reliable and requires no power consumption although it does not cool below 40 K and has a limited capacity. (2) The Vuilleumier cooler has moderate efficiency but it is difficult to detach the cold section and there is a problem of wearing parts. (3) The turbo-cooler has gas film bearings, a detached cold section and a large cooling capacity, but has poor efficiency in small sizes. (4) The rotary reciprocating refrigerator has good efficiency, little vibration and a detached cold section, but it is a complex machine with complex electronics. (5) The Stirling cooler with magnetic bearings and clearance seals is highly efficient but requires a counter-mass balance system and complex electronics for its magnetic bearings.
Chenoweth J. E.
Harris Roscoe Everett
White Russel
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