关键词: 振动与波, 卫星, 点波束天线, 天线反射器, UG-TMG, 热分析, 热致振动

Abstract:

During the running of the satellite in orbit, the temperature of the satellite antennaschanges with the heat flux and the radiation exchange.Satellite components such as antenna reflectors which aresensitive to the temperature change are prone to thermally induced vibrations which thus affect their normal function. Thermal analysis of the satellite antennas running in orbit provides temperature datafor the thermal control design of satellite antennas and the prediction of thermally induced vibrations. Firstly the paper established the physical model of certain type of satellite antenna system, and then analyzed the transient heat in orbit space by the software of UG-TMG. Lastly we followed and analyzed the result of temperature of antenna reflectors.