Computer Science
Scientific paper
Sep 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.540...41t&link_type=abstract
In: Proceedings of the 9th International Symposium on Materials in a Space Environment, 16-20 June 2003, Noordwijk, The Netherla
Computer Science
Space Environment, Materials
Scientific paper
A new thermal control material named the Smart Radiation Device (SRD) was studied and improved. An SRD can be used as a variable emittance radiator; it controls the heat radiated to deep space without electrical instruments or mechanical parts, simply by changing emissivity. This device reduces the energy consumption of the on-board electrical heater, and decreases the weight and the cost of the thermal control system on the spacecraft. Three types of SRD were tried in the process of improving optical properties. In order to reduce solar absorptance, we designed and applied multilayer films for SRDs to reflect solar radiation while retaining its infrared radiative properties. In this paper, we introduce the optical properties of the SRD, a space environmental simulation test on ground, and environmental tests in space. In addition, we report the optical properties of the value-added SRD.
Hirosawa Haruto
Nakamura Yasuyuki
Ochi Atsushi
Ohnishi Akira
Okamoto Akira
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