| 摘要: |
| 随着空间碎片数量的增加，其对近地轨道中的在轨卫星产生越来越严重的威胁，空间多碎片的高效清理在近年来也成为了学界关注的热点问题。针对柔性绳网在一次任务中同时对多个碎片进行捕获清理的问题，建立了柔性绳网的动力学模型和与碎片接触动力学模型，并对捕获过程中柔性绳网与碎片的运动进行了仿真模拟。针对绳网的最大拉伸力、质量块位移速度等变量，深入分析捕获过程中绳网与碎片的运动特性。数值仿真结果表明，在一次任务中，柔性绳网可以对多个旋转空间碎片进行捕获，并实现稳定的包裹缠绕，展示了柔性绳网良好的捕获能力。 |
| 关键词: 空间多碎片 柔性绳网 接触动力学 |
| DOI： |
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| 基金项目:国家研发计划 (2019YFA0706500) |
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| Capture Dynamics Simulations of a Flexible Net for Multiple Space Debris Pieces Removal |
| ZHANG Yu,ZHANG Haojie,CHENG Bin,BAOYIN Hexi |
| (School of Aerospace Engineering, Tsinghua University, Beijing 100084, China) |
| Abstract: |
| With the increase in the number of space debris, the threat to satellites in low Earth orbit has become increasingly serious. Efficient removal of space debris has also become a hot topic of concern in academia in recent years. This paper aims to address the issue of using a flexible net to simultaneously capture and clean up multiple debris in a single mission. We establish a dynamic model of the flexible net and a contact dynamics model with the debris during the capture process. The motion of the flexible net and debris during the capture process is simulated. In order to gain a deeper understanding of the motion characteristics of the net and debris during the capture process, we investigate: the maximum tensile stress of the net, the displacement and velocity of the mass block etc., the numerical simulation results show that in a single mission, the flexible net can capture multiple rotating space debris and achieve stable wrapping, demonstrating the excellent capture capability of the flexible net. |
| Key words: Multiple space debris Flexible net Contact dynamics |