Computer Science – Performance
Scientific paper
Aug 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.558..645m&link_type=abstract
Proceedings of the 5th International Symposium on Environmental Testing for Space Programmes Noordwijk, The Netherlands (ESA SP-
Computer Science
Performance
Scientific paper
According to the national space program in Korea, the power dissipation of the future large satellites will be max. 5kW. This power may either be uniformly distributed over the area of the satellite, or it may be concentrated on some faces with a maximum power of 0.5 kW/m2 . To verify the performance of those future satellites under the space environmental conditions, KARI(Korea Aerospace Research Institute) is designing a large space simulator, in which a vacuum and thermal environment is created to simulate the conditions in space. The working pressure inside the vessel will be less than 10-5 torr with two cryopumps (2x60,000l/s). Especially, cryogenic temperature condtions will be simulated by shrouds covering the inside surface of the facility. These shrouds will be made of stainless steel(SUS 304L) and supported by the vessel. The shroud surfaces will be cooled to 77K by liquid nitrogen(LN2), and heated to 423K for bake-out by halogen lamps, which are uniformly distributed all over the internal surface of the shroud. In this paper, we will discuss about our future large thermal vacuum system.
Cho Hyokjin
Choi Seok-Weon
Lee Sang-Hoon
Moon Guee-Won
Seo Hee-Jun
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