微小空间碎片气球卫星结构总体设计及分析  

Overall Design and Analysis of the Structure of Micro Space Debris Balloon Satellite

作　　者：魏德超 杨萱 杨华[3] 

机构地区：[1]中国科学院国家空间科学中心,北京100190 [2]中国科学院大学,北京100049 [3]内蒙古电子信息职业技术学院电子工程系,内蒙古呼和浩特010011

出　　处：《计算机仿真》2017年第12期45-48,296,共5页Computer Simulation

基　　金：中国科学院空间科学研究院培育项目(29Y5213D01)

摘　　要：针对近地轨道飞行器长期面临微小空间碎片撞击的风险,提出了一种气球和充气重力梯度伸杆相结合的卫星构型方案,通过在气球表面布置PVDF压电薄膜来对微小空间碎片进行探测,预防破坏的发生。对气球卫星结构进行总体设计,使气球卫星通过分步充气的方式,实现由收拢到展开状态。通过分析气球卫星受到的各种环境力矩,提出一种杆长的计算方法;对气球卫星展开状态进行模态分析,其振动频率与气球卫星重力稳定的天平动频率、轨道频率不耦合,满足设计要求,为气球卫星的进一步设计提供参考。A satellite structure scheme of the combination of balloon and inflatable gravity gradient rod is proposed in the paper. The surface of the balloon is covered with PVDF sensors which are used for micro space debris detec- tion,preventing the damage of micro space debris to near - Earth orbit spacecraft. The overall design of the satellite structure makes the satellite inflate step by step from the folded state to the expanded state. By analyzing the various environmental moments applied to the satellite, a method for calculating the length of the rod is proposed. Through the modal analysis, the satellite vibration frequency is not coupled with the moving frequency and the orbit frequency. The design results meet the design requirements and provide reference for the further design of the balloon satellite.

关 键 词：微小空间碎片 气球卫星 重力梯度杆 模态分析 

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]