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박상필(Sangpil Park),오환섭(Hwansup Oh),허민구(Mingu Hur) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this study, we analysis a cemented mirror for 3 mount material in steady - state using 'Finite elements analysis' for the purpose of making the cemented mirror of Lyman- solar telescope which is main payload of the STSAT-2 that is planned to blastoff the latter half of the year in 2005, be the minimum thermal stress and thermal transformation. we assume just two cases of temperature changes, which are worst cold case and worst hot case, according to an orbit character of satellite. As a result, the stress and transformation on commissure caused by the difference of the coefficient of thermal expansion is inquired out in order of Al-6063-T6, Ti-6AI-4V, SuperInvar besides stress on commissure and displacement of out 'of commissure is the maximum. Consequently It is safe to use Invar-fraction, But In the case of using AI-6063- T6 for satisfying mass requirement, is required more effectively thermal control system.