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热控系统为阿尔法磁谱仪在国际空间站上运行提供了有效和稳定的支持。长时间的在轨运行监测显示,个别工况下,阿尔法磁谱仪的穿越辐射探测器气体循环箱、硅微条探测器第一层和下层飞行时间计数器存在温度预警现象。同时,对国际空间站右舷侧太阳能光伏面板和右舷侧主散热板的操作,可以调节阿尔法磁谱仪的局部温度。通过分析具体工况的温度数据,得到了锁定太阳能光伏面板对上述3处温度的影响,计算了右舷侧主散热板向阿尔法磁谱仪反射太阳热辐射最优辐射角系数,并通过实验验证了计算的正确性,分析了异常温度部件的热响应,证明了已有热控系统的有效性。给出了针对异常温度现象的热控制建议,为阿尔法磁谱仪和其他航天器热控系统设计及运行提供了参考。
The thermal control system provides effective and stable support for alpha magnetic spectrometers operating on the ISS. Long-term monitoring of on-orbit operation shows that in some operating conditions, the temperature of the alpha spectrometer through the radiation detector gas circulation box and the first and lower flight time counters of the silicon micro-strip detector are pre-warmed. Meanwhile, the operation of the starboard side solar panels and the starboard side main heatsink of the ISS can adjust the local temperature of the alpha spectrometer. By analyzing the temperature data of specific operating conditions, the influence of the locked solar photovoltaic panels on the above three temperatures is obtained. The optimal radiation angle coefficient of the solar thermal radiation reflected from the starboard side main radiator plate to the alpha magnetic spectrometer is calculated and verified by experiments The correctness of the calculation and the thermal response of the abnormal temperature components are analyzed, which proves the effectiveness of the existing thermal control system. The thermal control suggestions for the abnormal temperature phenomenon are given, which provide a reference for the design and operation of the thermal control system of the Alpha Magnetic Spectrometer and other spacecraft.