引用本文: 李姿雯, 曾祥远. 着陆探测器低速碰撞小天体风化层的动力学分析. 力学与实践, 2022, 44(6): 1261-1267.
Li Ziwen, Zeng Xiangyuan. Dynamical analyses on the low-velocity impact between the landing probe and the asteroid deformable regolith. Mechanics in Engineering, 2022, 44(6): 1261-1267.
 Citation: Li Ziwen, Zeng Xiangyuan. Dynamical analyses on the low-velocity impact between the landing probe and the asteroid deformable regolith. Mechanics in Engineering, 2022, 44(6): 1261-1267.

DYNAMICAL ANALYSES ON THE LOW-VELOCITY IMPACT BETWEEN THE LANDING PROBE AND THE ASTEROID DEFORMABLE REGOLITH

• 摘要: 风化层是小天体表面探测任务中重点关注的地表特征。本文将地面力学理论应用于小天体弱引力场风化层地形描述，研究探测器着陆时与表面风化层的低速碰撞问题。文中仿真方法可同时解算探测器六自由度运动和风化层地表接触演化，进而分析不同尺寸的立方体探测器与小天体风化层区域的碰撞演化；探究探测器的棱长对碰撞时间、速度、角速度和风化层变形的影响规律。

Abstract: Regolith is a vital terrain feature in small body surface exploration missions. For simulating the low-velocity collision between the probe and the regolith during landing, the terramechanics theory is applied to describe the regolith topography in the weak irregular gravitational field of the asteroids. The newly-proposed simulation method in this paper can simultaneously solve the 6-DOF motion of the probe and the collision process of the regolith surfaces. By exploiting this method, the collision evolution between the different-sized cube probes and the asteroid regolith is analyzed. The influence of the edge length of the cube on the low-velocity collision duration time, the velocity, the angular velocity, and the regolith deformation is investigated.

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