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Proceedings Paper

Contamination effects on radiant cooler
Author(s): Hongyan Xu; Deping Dong; Rongjian Xie
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Paper Abstract

The radiant cooler is used to cool optics and detectors to reduce signal noise in infrared (IR) telescopes. In-orbit radiant cooler could be contaminated by excessive molecular, particulate and outgassing. The contamination can change the emittance, solar absorptance and scattering of the surface of optical reflector and earth shield. The paper calculates the effection of contamination on the thermal properties of radiant cooler. The working performance degrades a lot when the optical screens are contaminated. Anti-contamination is emphasized for the radiant cooler through design, manufacture, tests and flight procedure for quantitative applications of remote sensing data. Low outgassing materials, reasonable outgassing channels and outgassing heaters are applied to the radiant cooler to reduce the potential contaminants. The flight performance of the cooler meets with the design requirements.

Paper Details

Date Published: 5 November 2010
PDF: 6 pages
Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 78542G (5 November 2010); doi: 10.1117/12.868761
Show Author Affiliations
Hongyan Xu, Shanghai Institute of Technical Physics (China)
Deping Dong, Shanghai Institute of Technical Physics (China)
Rongjian Xie, Shanghai Institute of Technical Physics (China)


Published in SPIE Proceedings Vol. 7854:
Infrared, Millimeter Wave, and Terahertz Technologies
Cunlin Zhang; Xi-Cheng Zhang; Peter H. Siegel; Li He; Sheng-Cai Shi, Editor(s)

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