光学小卫星仿水母构型轻量化结构研究  

Study on lightweight structure of small optical satellite imitating jellyfish

作　　者：谷松[1,3] 李军瑶 陈善搏 GU Song;LI Jun-yao;CHEN Shan-bo(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;University of Chinese Academy Sciences,Beijing 100039,China;Chang Guang Satellite Technology Ltd,Changchun 130033,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033 [2]中国科学院大学,北京100039 [3]长光卫星技术有限公司,长春130013

出　　处：《沈阳航空航天大学学报》2019年第6期91-96,共6页Journal of Shenyang Aerospace University

基　　金：国家重点研发计划(项目编号:2016YFB0500904)

摘　　要：为了实现卫星结构轻量化,利用仿生设计的方法仿照海月水母的形态对光学小卫星进行构型设计并对结构进行优化,通过改变传力路径实现对结构性能的充分利用。首先,从海月水母的形态中提取了数学模型,公式推导出曲线在动载作用下刚度的变化情况;然后,依照所得数学模型对卫星结构进行了布局设计;最后,用灵敏度分析法分析了基频对壳体各部分厚度的敏感程度,以横向一阶频率不低于35 Hz为优化目标对壳体厚度进行了迭代。结果显示壳体的最佳厚度为0.1 mm,此时卫星主承力结构质量占整星质量的4.9%,因此,仿水母构型可为同类光学小卫星设计提供参考。In order to realize the lightweight satellite structure,the bionic design method was used to simulate the shape of the sea and moon jellyfish to design the configuration of the optical satellite and optimize the structure.Through changing the transmission path,the structure performance was fully utilized.Firstly,a mathematical model was extracted from the morphology of the jellyfish,and the stiffness change of the curve under the action of dynamic load was deduced by the formula.Then,the satellite structure was designed according to the mathematical model.Finally,the sensitivily of the fundamental frequency to the thickness of each part of the shell was analyzed by the sensitivity analysis method.The shell thickness was iterated with the transverse first order frequency not less than 35 Hz as the optimization objective.The results show that the optimal thickness of the shell is 0.1 mm,and the mass of mainbearing structure of the satellite accounts for 4.9%of the total satellite mass.Therefore,the similar jellyfish configuration can provide reference for similar optical satellite design.

关 键 词：仿生设计 水母构型 光学小卫星 轻量化 灵敏度 

分 类 号：V411.8[航空宇航科学与技术—航空宇航推进理论与工程]