空间碎片几何形状对激光烧蚀冲量的影响规律  

Influence of Geometry of Space Debris on Laser Ablation Impulse

作　　者：陈川[1] 龚自正[1,2] 杨武霖 李明[3] 余谦 CHEN Chuan;GONG Zizheng;YANG Wulin;LI Ming;YU Qian(Science and Technology on Reliability and Environmental Engineering Laboratory,Beijing Institute of Spacecraft Environment Engineering,Beijing 100094,China;Beijing Institute of Spacecraft Environment Engineering,Beijing 100094,China;China Academy of Space Technology,Beijing 100094,China)

机构地区：[1]北京卫星环境工程研究所可靠性与环境工程技术重点实验室,北京100094 [2]北京卫星环境工程研究所,北京100094 [3]中国空间技术研究院,北京100094

出　　处：《高压物理学报》2018年第4期1-12,共12页Chinese Journal of High Pressure Physics

基　　金：国家安全重大基础研究计划(61331103);空间碎片专项(KJSP2016040103)

摘　　要：激光烧蚀驱动是移除厘米级空间碎片非常有前景的技术,但空间碎片不规则的几何形状对激光烧蚀产生的驱动效果有十分复杂的影响,是目前研究的难点和热点之一。从激光烧蚀驱动目标冲量耦合规律出发,基于通过目标表面顶点的三角化三维重构,提出了一种可以精确计算激光辐照外形不规则目标所产生冲量大小及方向的方法。以立方体、球体和圆柱体3个典型的几何外形规则的目标为对象,验证了该方法的计算精度。利用该方法研究了激光辐照几何外形规则目标和不规则类球体小行星"贝努"产生的冲量规律,给出了在特定激光入射角度下不同几何外形目标产生最大冲量的条件。这一方法和结果对激光烧蚀驱动移除空间碎片技术研究有重要参考作用。： Laser ablation driven is a very promising technology to remove centimeter-scale space debris,however,the irregular geometry of the space debris has very complicated influence on the impulse of the laser ablation,which is a difficulty and hot issue in current related research.In this study,based on the impulse coupling law of laser ablation,we presented a method for accurately calculating the impulse magnitude and direction for the irregular target irradiated by laser based on the surface triangulation and three-dimensional reconstruction of irregular objects.The accuracy of this method is verified by 3 targets with typical geometric shapes：cube,sphere and cylinder.Using this method,we studied the impulse generation rule of laser irradiating the regular targets with typical geometrical shapes and the irregular spherical target asteroid “Bennu”,and obtained the conditions of the maximum impulse for various geometrically shaped targets under specific laser incidence angle.This method and the results are very useful for the research of active debris removal by laser.

关 键 词：空间碎片移除 激光烧蚀驱动 目标几何形状 表面三角化重构 冲量产生规律 

分 类 号：O532.25[理学—等离子体物理] V416.5[理学—物理]