摘要
针对近地小行星频繁的撞击威胁,论证了小行星动力推离偏转处置任务。该处置方式通过侵彻锚固小行星表面并采用电力推进对小行星多次推离。通过建立近地小行星动力推离动力学模型,研究了不同自转状态小行星在动力推离处置策略下,其轨道偏移变化的情况。以2019VL5偏转小行星为例,通过数值仿真模拟动力推离处置效能及工程可实施性。仿真结果表明,在约4年的预警时间中,在特定轨道位置施加0.4N小推力,小行星能够获得的最大偏转距离2.91万km,在处置结束2500d后小行星能够获得9万km的最大偏转。小行星动力推离处置可使对具有威胁的小行星实现有效偏转,可用于未来小行星防御偏转和抵御其它太空物体攻击的轨道转移任务。
In view of the threat of more frequent near-Earth asteroid impacts,the asteroid dynamic push away deflection disposal mission was demonstrated.The disposal method was pushed away the asteroid multiple times by penetrating and anchoring the asteroid surface and by electric propulsion.In this paper,a dynamic model of near-Earth asteroids was established to study the change of orbit deviation of asteroids with different rotation states under the dynamic push away treatment strategy.Taking the deflection of 2019VL5 asteroid as an example,the efficiency of dynamic push away disposal and the feasibility of the project were evaluated by numerical simulation.The simulation results show that during the warning time of 4 years the maximum deflection distance of the asteroid could be 2.91×104 km under the small 0.4 N thrust applied to the specific orbital position,and the maximum deflection distance of the asteroid could be 9.0×104 km after 2500 days of disposal.The dynamic push away disposal of asteroids can effectively deflect threatening asteroids,and can be used in future asteroids deflecting defense missions and orbit transfer missions against other space object attacks.
作者
薛璐瑶
彭玉明
段晓闻
黄帆
张恒
袁渊
XUE Luyao;PENG Yuming;DUAN Xiaowen;HUANG Fan;ZHANG Heng;YUAN Yuan(Shanghai Institute of Satellite Engineering,Shanghai 201109,China;Shanghai Key Laboratory of Deep Space Exploration Technology,Shanghai 201109,China;School of Instrument Science and Engineering,Southeast University,Nanjing 210008,China)
出处
《深空探测学报（中英文）》
CSCD
北大核心
2023年第4期413-419,共7页
Journal Of Deep Space Exploration
基金
空间碎片专项预研项目(KJSP2020020301)。
关键词
近地小行星
行星防御
动力推离
偏转处置
near-Earth asteroids
planetary defense
dynamic push away
deflection disposal
