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http://dx.doi.org/10.5139/JKSAS.2008.36.12.1216

Investigation on Thermal Effect for a Low Earth Orbit Satellite during Imaging Maneuvering  

Kim, Hui-Kyung (한국항공우주연구원 위성열추진팀)
Lee, Jang-Joon (한국항공우주연구원 위성열추진팀)
Hyun, Bum-Seok (한국항공우주연구원 위성열추진팀)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.36, no.12, 2008 , pp. 1216-1221 More about this Journal
Abstract
A low earth orbit satellite with a fixed solar array always has a sun-pointing attitude during daylight, and changes into a nadir-pointing attitude for a imaging mission. Since external heating sources to the satellite panels are Earth　irradiation and Albedo during most of daylight in a sun-pointing attitude, the thermal environment condition is relatively stable. However, direct sunlight which is the greatest environmental heating has an affect on the satellite panels during a mission period (10% of one orbit) in a nadir-pointing attitude. In satellite thermal design, thermal effects of a nadir-pointing mission attitude due to this thermal environment change need to be evaluated although the duration of a nadir-pointing attitude is short. Therefore, a nadir-pointing attitude during a mission is incorporated into thermal model and by the thermal analysis result, thermal effects on the satellite are investigated.
Keywords
Low Earth Orbit Satellite; Satellite Thermal Design; Satellite Thermal Model; Satellite Thermal Analysis; Satellite Mission Attitude;
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