卫星密封舱湿度控制技术的应用研究

Application Study on Humidity Control Technique for the Pressurized Module in Satellites

通过实验验证和热力学分析相结合的方法，对卫星密封舱湿度控制技术进行了应用研究。由卫星的热试验和在轨飞行试验可知，通过利用相机胶片的水汽含量、设置湿控子系统及进行临射前舱内湿度调控等方法，能够使卫星密封舱内局部区域的相对湿度控制在30％～60％的范围内，满足相机要求。通过研究可得，热控系统所采取的卫星湿度控制技术是成功的，保证了卫星任务的圆满完成。

In order to solve the humidity requirements of the camera in the satellite, the application study on the humidity control technique for the pressurized module is conducted by experimental verification and thermodynamic analysis. By the thermal test and in-orbit test of the satellite, it can be got that, by using the moisture of the camera＇s film, using humidity control subsystem and conducting humidity adjustment before launch, the relative humidity of the local area in the pressurized module of the satellite can be controlled in a range about 30%～ 60%, which meets the requirements of the camera. It is concluded from the paper that, the humidity control technique used by the thermal control system is successful, and ensure the full success of the satellite＇s task.