航天器大型可展开天线金属网热辐射性质测试及热分析仿真  

Optical-Property Measurement and Thermal Analysis on Metal Wire Mesh of Large Deployable Flexible Antenna

作　　者：王耀霆 王波[1] 肖志伟 徐向阳[1] 张小波 WANG Yaoting;WANG Bo;XIAO Zhiwei;XU Xiangyang;ZHANG Xiaobo(China Academy of Space Technology(Xi'an),Xi'an 710000,China)

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2020年第6期22-27,共6页Space Electronic Technology

摘　　要：在大型可展开天线的设计中,金属网的透射率、太阳吸收比和半球发射率三个热辐射性质是最重要的热物性参数,决定着金属网在轨温度水平,而金属网的温度水平又会影响天线的形面精度和无源互调(PIM)性能。本文针对金属网这种结构,提出了一种透射率、太阳吸收比、半球发射率的测试方法,并提出了一种等效参数仿真算法,利用有限元中的壳单元等效热物性参数对金属网进行了热分析仿真。该方法可适用于大型可展开天线用的各种规格金属网热辐射性质的测试和热分析仿真。其它半透明材料的热辐射性质的测试可参考。The optical-property of metal wire mesh:transmissivity,solar absorbtivity and emissivity are always the key and hard-to-measure parameters in the thermal design of the large deployable flexible antennas.The temperature of mesh is closely relevent to optical-propertys and will seriously affecte the antenna surface accuracy and the Passive intermodulation(PIM).In this paper,an optical-property measurement method and an equivalent finite element thermal analysis method for metal wire mesh are proposed,which can play a guiding role in optical-property measurement and thermal analysis of large deployable flexible antenna.

关 键 词：金属网 金属丝 透射率 太阳吸收比 半球发射率 热分析 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]