皮星1号A卫星(ZDPS-1A)被动热控制技术

Passive thermal control technology of ZDPS-1A satellite

针对皮卫星体积小、质量轻、热容量小和热容密度大等特点带来的热控设计难点,提出完全被动热控以及覆盖法的设计方法.通过对皮卫星热控输入进行详细的分析,提出被动热控的具体措施,并建立热控模型进行仿真计算.进行地面试验和在轨试验.试验结果表明,在轨温度和在地面试验时的温度基本一致,并都在计算得到的温度范围之内.说明完全被动热控以及覆盖法的设计方法在皮卫星上的运用非常成功,为后续皮卫星热控的设计提供借鉴.

In view of the design difficulty of thermal control caused by the small volume,light weight,small heat capacity and large heat flow density of the pico-satellite,passive thermal control and cover method were used.Through the detailed analysis of thermal control design input,the passive thermal control and cover method were proposed.The thermal model was set up and simulated.Also the experiments on ground and in orbit were done.The results show that the temperatures in orbit and on ground match well,and both within the temperature range of calculated results.It reveals that the passive thermal control and cover method are applied successfully in the pico-satellite,which provides reference for the pico-satellite thermal control in the future.