航天器环境工程2017，Vol.34Issue(6)：585-592,8.DOI:10.3969/j.issn.1673-1379.2017.06.003
一种提升近地小行星防御中拦截效率的方法
A method to improve interception efficiency in the defense against near-Earth asteroids
摘要
Abstract
Using the nuclear bomb explosion to directly destroy the asteroid or to change its orbit so as to avoid its impact on earth is one of the main methods in the defense against near earth orbit asteroids. Based on the concept of the hypervelocity asteroid interception vehicle (HAIV) developed by Iowa State University, this paper proposes a scheme of using a long rod impactor instead of the original impactor. The crater forming process of the long rod impactor impacting the asteroid is simulated by using the Euler type hydrocode NTS developed by us. The deflections and damages of the nuclear device exploded in various depths are simulated by adding an energy source into the simulation. The results show that by using the long rod impactor with a reasonable impact velocity, the nuclear device can be guided into a deeper place and exploded in the asteroid, thus the nuclear explosion energy can be more efficiently used, and the ability to deflect or destroy the asteroid can be enhanced.关键词
近地小行星/超高速碰撞/撞击防御/核爆/仿真研究Key words
near-Earth asteroid/hypervelocity impact/impact defense/nuclear burst/simulation study分类
航空航天引用本文复制引用
李毅,陈鸿,兰胜威,任磊生,柳森..一种提升近地小行星防御中拦截效率的方法[J].航天器环境工程,2017,34(6):585-592,8.基金项目
国家自然科学基金项目"水冰的超高速成坑机理与损伤方程"(编号:41304138) （编号:41304138）
