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Proceedings Paper

Long-life spaceborne cryocooler for the Advanced Spaceborne Thermal Emission and Reflection Radiometer/Short Wavelength Infrared Radiometer (ASTER/SWIR)
Author(s): Hiroyuki Kiyota; Minoru Kobayashi; Hiroshi Akao; Kazuhiko Kawajiri
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Paper Abstract

A long life spaceborne Stirling cycle cryocooler named 'LS-5A' has been developed for use to cool the detector mounted on the Short Wavelength Infrared Radiometer (SWIR) of the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER). The cryocooler is applied Stirling cycle, supplies 1.2 watt cooling at the cooling temperature of 70 K, and consist of a twin-opposed piston compressor unit and a expander unit balanced by an active balancer to minimize the self-induced vibration. In order to accomplish 5 years of continuous operation in orbit, the cryocooler has noncontact clearance seals for pistons supported by suspension springs to avoid the wear of seal materials. Cooling performances and self-induced vibration levels were evaluated, and a life test cryocooler has been running for 7300 hours without any performance degradation.

Paper Details

Date Published: 14 September 1994
PDF: 11 pages
Proc. SPIE 2268, Infrared Spaceborne Remote Sensing II, (14 September 1994); doi: 10.1117/12.185826
Show Author Affiliations
Hiroyuki Kiyota, Mitsubishi Electric Corp. (Japan)
Minoru Kobayashi, Mitsubishi Electric Corp. (Japan)
Hiroshi Akao, Mitsubishi Electric Corp. (Japan)
Kazuhiko Kawajiri, Mitsubishi Electric Corp. (Japan)

Published in SPIE Proceedings Vol. 2268:
Infrared Spaceborne Remote Sensing II
Marija S. Scholl, Editor(s)

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