通信卫星真空热试验测试电缆集中控温方法  

Method for centralized temperature control of testing cables in thermal vacuum test for communication satellite

作　　者：简亚彬[1] 毕研强[1] 周艳[1] 吴越[2] 杜春林[1] JIAN Yabin;BI Yanqiang;ZHOU Yan;WU Yue;DU Chunlin(Beijing Institute of Spacecraft Environment Engineering;Institute of Telecommunication Satellite,China Academy of Space Technology,Beijing 100094,China)

机构地区：[1]北京卫星环境工程研究所 [2]中国空间技术研究院通信卫星事业部,北京100094

出　　处：《航天器环境工程》2018年第3期277-282,共6页Spacecraft Environment Engineering

基　　金：国家自然科学基金项目(编号:51506009)

摘　　要：为解决通信卫星真空热试验中有效载荷的部分测试电缆工作温度超出正常区间导致电缆相位特性发生极大跃变的问题,文章设计了一种新型电缆控温方法,实现了测试电缆在真空低温复杂环境下的集中控温。在某新一代通信卫星真空热试验中,应用该集中控温方法后测试电缆网的温度被严格控制在40℃±5℃,单根电缆沿路径的温度差异被控制在±3℃之内,满足了星上有效载荷的时序和相位要求,提高了地面测试的准确性。In the thermal vacuum test, a large number of cables are connected to the communication satellite through a flange outside the space environmental simulator. A part of the cables would work beyond the normal temperature range, which may lead to undesirable phase jumps. To solve this problem, a new type of cables temperature control device is proposed. With it, the centralized temperature control of the cables in complex vacuum cryogenic environment is realized. In the thermal vacuum test of a new-generation communications satellite, the temperature of the related cables is controlled within a range of 40 ℃±5 ℃, and the temperature difference of a single cable along its path is kept within ±3 ℃. Under the controlled temperature,the requirements of timing and phase of the satellite payload is guaranteed, and therefore the accuracy of the ground testing is also improved.

关 键 词：航天器 真空热试验 测试电缆 真空低温环境 集中控温 

分 类 号：V414[航空宇航科学与技术—航空宇航推进理论与工程]