第20卷
第9期
2012年9月
文章编号
1004-924X(2012)09-198407
光学精密工程
Optics and Precision Engineering
Vol. 20No. 9
Sep.2012
炭/炭复合材料在空间光学遥感器热控制中的应用
吴清文'，王领华1,2*，杨献伟"，江帆"，郭亮1,2，陈立恒（1.中国科学院长春光学精窑机械与物理研究所，吉林长春130033：
2.中国科学院研究生院，北京100039)
摘要：提出在金属表面粘贴炭/炭复合材料来解决空间光学遥感器光机结构材料导热率低、温度梯度较大的间题。概述了炭/炭复合材料的基本特点并建立了钢板表面粘贴炭/炭复合材料的热传导数学模型，对钢板的棵板和单面分别贴 0.5mm和2mm复合材料的3种状态进行了理论分新与温度测试试验，获得了钢板在3种状态下的等效热导率，利用 IDEAS-TMG有限元软件对模型进行了仿真分析并对钢板在上述3种状态下的传热性能进行了比较。对比结果显示，粘贴炭/炭复合材料能很好地改善钢板的传热性能，最后，将0.5mm厚的炭/炭复合材料应用于低热导率的量敏感器安装支架（材料为TC4)的热控，并对星敏感器支架粘贴炭/炭复合材料前后两种情况进行了温度测试试验，试验结果显示，表面粘贴炭/炭复合材料后，星敏感器支架测点溢差由28C减小为5℃，提高了星敏感器支架温度均匀性，表明该措施对改善空间光学遥感器上低热导率结构件的温度梯度很有意义，
关键调：空间光学遂感器；发/炭复合材料：温度梯度：热导率；星敏感器支架
中图分类号：V448.22；V259
文献标识码：A
doi: 10, 3788/OPE, 20122009, 1984
Applicationof carbon-carboncompositestothermal
controlofspaceopticalinstrument
WU Qing-wen' , WANG Ling-hua'-* , YANG Xian-wei' ,JIANG Fan', GUO Liang'-, CHEN Li-heng
(1.Changchun Institute of Optics,FineMechanics and Physics,ChineseAcademy
of Sciences，Changchun130033,China;
2.Graduate University of ChineseAcademy of Sciences,Beijing 100039,China)
Corresponding author,E-mail:wuqw@ciomp.qc.cn
Abstract: In order to improve the thermal conductivity of materials and decrease the temperature gra-dient of a space optical remote sensor, the carbon-carbon composites were pasted on the metal surface. The characteristics of carbon-carbon composites were introduced and the heat transfer models of one bare steel plate and two pasted plates with carbon-carbon composites in the thicknesses of o, 5 mm and 2 mm respectively were established. The three heat transfer states of the steel plates were calculated and experimented, and their equivalent thermal conductivities were obtained, The models were simu-lated by using the finite element model IDEAS-TMG and the heat transfer properties of three kinds of plates mentioned above were compared, Results is shown that the carbon-carbon composites could im prove the temperature uniformity of the plates, Finally, the carbon-carbon composites were applied to a TC4 star-tracker bracket of a star sensor, and the temperature difference between the assembly area
收稿日期：2012-02-03；修订日期：2012-04-01。基金项目：国家重大工程资助项目