第22卷第7期 2014年7月
文章编号1004-924X(2014)07-1800-08
光学精密工程
Optics and Precision Engineering
皮卫星及其星箭分离机构的热-结构耦合与间隙设计
谢长雄1+2·，徐月同"，夏晨晖"，陈子辰"，傅建中！
Vol. 22No.7
Jul.2014
（1.浙江大学机械工程学系，浙江杭州310027;2.衡州学院机械工程学院，浙江衢州324000）
摘要：对皮卫星与星箭分离机构进行了热结构耦合分析，以便合理地设计皮卫星与导轨面间的配合间隙，确保皮卫星安全可靠分离。在充分考患皮卫星发射过程中卫星、地球、太阳三者几何关系的基础上，计算了皮卫星及其星箭分离机构在卫星发射过程中所吸收的外热流；通过有限元分析求解了卫星发射过程中的温度场和热变形情况。基于上述工作，设
外壳和导轨面总体并未发生大的扭曲形变；在600N和300N预紧
分别为62.3m和63μm。
根据分析结果合理选
配告公票
力作用下，皮卫星与导轨面间的配合间隙最大变化量
得到的结果表明：皮卫星及其星箭分离机构在高低温
试验后能正常分离、在轨星篇分离案态与仿真结果吻合，实验结果验证
正了卫星与导轨间配合间除设计的合理性，可用于
指导皮卫星星篇分离机构的结构设计和热控制设计。
关键词：皮卫星；星箭分高机构；热变形；热-结构揭合；间隙配合
中图分类号：V474
文献标识码：A
doi:10,3788/OPE.20142207.1800
Design of clearance fit between pico-satellite and its separation
mechanismbasedonthermal-structurecoupling
XIE Chang-xiong'-·,XU Yue-tong',XIA Chen-hui',CHEN Zi-chen',FU Jian-zhong
(1.Departmentof Mechanical Engineering,ZhejiangUnizersity,Hangzhou310027,China
2.CollegeofMechanicalEngineering,QuzhouUniversity,Quzhou324000,China）
+Corresponding author,E-mail :.riechang.riongzju.edu.cn
Abstract: The thermal-structure coupling for a pico-satellite and its separation mechanism was analyzed to guide a rational design of the fit clearance value between the satellite and guide rail and to ensure safe and reliable satellite separation. On the basis of the geometry relations of the satellite, the earth, and the sun in the process of launching, the internal and external heat flows absorbed by the pico-satellite and its separation mechanism were analyzed. The temperature field and thermal deformation in satellite launching were obtained by finite element analysis, The clearance fit value between the satellite and guide rail was designed on the basis of above analysis. The analysis results show that the maximum deformation occurs on the shady side because of the cold dark environment and conduction heat, and the pico-satellite shell and its guide rail surface are not distorted and deformed seriously. The amount of maximum deformation is 62. 3 μm when the preload force is 6oo N
收稿日期：2013-12-20；修订日期：2014-02-01.
基金项目：中国博士后科学基金资助项目（No.20080431306)；中国博士后科学基金特别资助项目（No.20081458）