超高速斜撞击下航天器Whipple结构碎片特性研究  

Study on the Fragment Characteristics of Spacecraft Whipple Structure under Hypervelocity Oblique Impact

作　　者：李正宇 贾光辉[2] 张品亮[1] 彭厚吾 武强[1,3] 任思远 宋光明 龚自正[1] LI Zheng-yu;JIA Guang-hui;ZHANG Pin-liang;PENG Hou-wu;WU Qiang;REN Siyuan;SONG Guang-ming;GONG Zi-zheng(Beijing Institute of Spacecraft Environment Engineering,Beijing 100094,China;School of Astronautics,Beihang University,Beijing 100083,China;Science and Technology on Reliability and Environmental Engineering Laboratory,Beijing 100094,China;Institute of Remote Sensing Satellite,Beijing 100094,China)

机构地区：[1]北京卫星环境工程研究所,北京100094 [2]北京航空航天大学宇航学院,北京100083 [3]可靠性与环境工程技术重点实验室,北京100094 [4]遥感卫星总体部,北京100094

出　　处：《空间碎片研究》2023年第2期21-33,共13页Space Debris Research

基　　金：空间碎片与近地小行星防御科研项目(KJSP2020010402);国家自然科学基金(12275029)。

摘　　要：发生在近地轨道的空间碎片撞击事件几乎都是斜撞击,撞击产生的碎片云会对航天器内部结构及设备产生威胁。本文采用AUTODYN软件对航天器Whipple结构受弹丸撞击的过程进行数值仿真,通过与实验对比验证数值仿真有效性,处理并识别仿真结果,以碎片质量分数、剩余速度以及形态分布为重点,研究撞击角度在0°~60°范围内碎片云中最具威胁的碎片特征。研究表明:超高速斜撞击下碎片分布特征呈现随撞击角度分区域变化的规律,同时碎片的质量分数及剩余速度也随撞击角度变化呈现一定规律。The space debris impact events in low Earth orbit are almost oblique impacts,and the debris cloud generated by space debris impacting the spacecraft will pose a threat to its internal structure and equipment.In this paper,AUTODYN software is used to carry out numerical simulation of the impact process of spacecraft Whipple structure by projectiles.The effectiveness of numerical simulation is verified by comparing with the experimental results.By processing and identifying the simulation results,and focusing on the debris mass fraction,residual velocity and shape distribution,this paper studies the most threatening debris characteristics in the debris cloud with an inclination angle of 0 to 60°.The research shows that the distribution characteristics of debris under the hypervelocity oblique impact show a regional variation law with the angle of impact,and the mass fraction and residual velocity of debris also show a certain law with the angle of impact.

关 键 词：空间碎片 超高速斜撞击 数值仿真 碎片云模型 

分 类 号：V528[航空宇航科学与技术—人机与环境工程]