A STUDY OF ANALYTIC METHOD AND NUMERICAL SIMULATION FOR CONCEPTUAL DESIGN OF BUS RADIATOR AND HEATER POWER OF COMS (COMMUNICATION, OCEAN AND METEOROLOGICAL SATELLITE)

통신해양기상위성 본체 방열판 및 히터 개념설계를 위한 해석적 방법 및 수치모사 연구

The COMS, the first meteorological geostationary satellite in Korea, is under development by KARI. The radiator size and the heater power for the thermal control of COMS are calculated using an analytic method. The total radiator area of $4.85\;m^2$ and the total heater power of 794.77 W are determined at a conceptual design of COMS. The commercial software, SINDA and TRASYS, are utilized in order to compare and verify the analytic results. The results of on-orbit numerical simulation of cold and hot cases show that the radiator size and heater power obtained from the analytic method are appropriate to maintain COMS equipments within required temperature ranges.