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	Routing the asteroid surface vehicle with detailed mechanics
	Yang Yu ; He-Xi Baoyin ; Yang Yu ; He-Xi Baoyin
	2016-03-30 ; 2016-03-30
关键词	Asteroid exploration Numeric mode Morphodynamics 1620 Geographos Path planning P173
其他题名	Routing the asteroid surface vehicle with detailed mechanics
中文摘要	The motion of a surface vehicle on/above an irregular object is investigated for a potential interest in the insitu explorations to asteroids of the solar system.A global valid numeric method,including detailed gravity and geomorphology,is developed to mimic the behaviors of the test particles governed by the orbital equations and surface coupling effects.A general discussion on the surface mechanical environment of a specified asteroid,1620 Geographos,is presented to make a global evaluation of the surface vehicle’s working conditions.We show the connections between the natural trajectories near the ground and differential features of the asteroid surface,which describes both the good and bad of typical terrains from the viewpoint of vehicles’dynamic performances.Monte Carlo simulations are performed to take a further look at the trajectories of particles initializing near the surface.The simulations reveal consistent conclusions with the analysis,i.e.,the openfield flat ground and slightly concave basins/valleys are the best choices for the vehicles’dynamical security.The dependence of decending trajectories on the releasing height is studied as an application;the results show that the pole direction(where the centrifugal force is zero)is the most stable direction in which the shift of a natural trajectory will be well limited after landing.We present this work as an example for pre-analysis that provides guidance to engineering design of the exploration site and routing the surface vehicles.; The motion of a surface vehicle on/above an irregular object is investigated for a potential interest in the insitu explorations to asteroids of the solar system.A global valid numeric method,including detailed gravity and geomorphology,is developed to mimic the behaviors of the test particles governed by the orbital equations and surface coupling effects.A general discussion on the surface mechanical environment of a specified asteroid,1620 Geographos,is presented to make a global evaluation of the surface vehicle’s working conditions.We show the connections between the natural trajectories near the ground and differential features of the asteroid surface,which describes both the good and bad of typical terrains from the viewpoint of vehicles’dynamic performances.Monte Carlo simulations are performed to take a further look at the trajectories of particles initializing near the surface.The simulations reveal consistent conclusions with the analysis,i.e.,the openfield flat ground and slightly concave basins/valleys are the best choices for the vehicles’dynamical security.The dependence of decending trajectories on the releasing height is studied as an application;the results show that the pole direction(where the centrifugal force is zero)is the most stable direction in which the shift of a natural trajectory will be well limited after landing.We present this work as an example for pre-analysis that provides guidance to engineering design of the exploration site and routing the surface vehicles.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/143745]
专题	清华大学
推荐引用方式 GB/T 7714	Yang Yu,He-Xi Baoyin,Yang Yu,et al. Routing the asteroid surface vehicle with detailed mechanics[J],2016, 2016.
APA	Yang Yu,He-Xi Baoyin,Yang Yu,&He-Xi Baoyin.(2016).Routing the asteroid surface vehicle with detailed mechanics..
MLA	Yang Yu,et al."Routing the asteroid surface vehicle with detailed mechanics".(2016).

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