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Thermal Design on the Backplane of GPS Antenna of Low Earth Orbit Satellite  

Hyun, Bum-Seok (한국항공우주연구원 위성열/추진팀)
Lee, Jang-Joon (한국항공우주연구원 위성열/추진팀)
Publication Information
Aerospace Engineering and Technology / v.10, no.1, 2011 , pp. 136-140 More about this Journal
Abstract
In this study, thermal model for backplane of GPS antenna in Low Earth Orbit Satellite is updated and orbit thermal analysis is performed. The analysis is focused on the safehold mode of satellite. During the safehold mode, the solar panel is constantly looking to the Sun, and there is not a mission maneuvering. Therefore, antenna backplane receives the maximum heat influx considering the End-Of-Life condition. To maintain the temperature of antenna within allowable limits, radiating tape is applied and its area is determined. Besides, to verify the lowest temperature of the antenna, cold case with Begin-Of-Life analysis is also performed.
Keywords
satellite; thermal design; GPS antenna; temperature margin; safehold mode; backplane;
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