Natural Landing Simulations on Generated Local Rocky Terrains for Asteroid Cubic Lander

Zeng, Xia; Wen, Tongge; Li, Ziwen; Alfriend, Kyle T.

doi:10.1109/taes.2022.3152099

Cited by 16 publications

(3 citation statements)

References 43 publications

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“…The polyhedron gravitational model [29][30][31], and the finite element method [32] have been widely used in studying the surrounding particle dynamics around irregular asteroids. Nevertheless, when investigating the rubble-pile structure deformation of asteroids, the discrete element method (DEM) is usually adopted to deal with the interaction of the granular systems [33].…”

Section: Methodsmentioning

confidence: 99%

The Coupling Orbit–Attitude–Structure Evolution of Rubble-Pile Asteroid with Earth Flyby in the Restricted Three-Body Problem

et al. 2022

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Some asteroids flying close to Earth may pose a threat of impact. Among them, the structural and dynamical characteristics of rubble-pile asteroids can be changed because of the tidal force of the Earth in this process. This can provide key information for predicting the dynamical evolution of potentially hazardous asteroids. In this study, the long-term evolution of the coupling orbit–attitude–structure of these small bodies is presented numerically based on the integration of two models. One is the 3D discrete element method, which models the structure and irregular shape of the rubble-pile asteroid. The other is the dynamical model of the circular restricted three-body problem (CRTBP). This provides a more precise dynamical environment of the asteroid orbital deflection, morphological modification, and attitude angles analysis compared to the frequently adopted two-body problem. Parametric studies on the asteroid evolution were performed focusing on its flyby distance and the bulk porosity. Numerical results indicate that the Earth flyby can form different patterns of modification of asteroids, where the rubble-pile structure can be destructed by considering the bulk porosity. The asteroid orbital deflection and attitude variational trends are also summarized based on the simulations of multi-orbital revolutions.

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Section: Methodsmentioning

confidence: 99%

The Coupling Orbit–Attitude–Structure Evolution of Rubble-Pile Asteroid with Earth Flyby in the Restricted Three-Body Problem

et al. 2022

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“…[108]将着陆器的姿态旋转视作控制变量, 讨论了通过控制着陆器自转辅助着陆的可行性. Zeng等人 [109,110] 则深入分析了立方体着陆器在小天体碎石地表和可变形风化层表面的运动情况, 关于上述典型地形的讨论将留作下节详细说明. 特别地, 在着陆器总质量和初 10) https://en.wikipedia.org/wiki/Gravel.…”

Section: 析了几类正多面体外形的着陆规律在最近的工作中unclassified

“…研究发现探测器入射角度等因素会影响接触碰撞中风化层地表恢复系数, 这对未来着陆探测任务设计和地表参数辨识等工作提供了新的参考. ; (b) 三维点云融合碎石地表 [110] ; (c) Dimorphos局部假想碎石分布 [123] ; (d) Blender软件生成碎石地形统的形成机制 [130] 和演化特性可为行星形成演化研究提供实证观测 [131] , 受到行星科学和航天探测领域的广泛关注. 自1993年人类第一次拍摄双小行星243 Ida-Dactyl至2022年DART双星撞击任务, 不过30年时间.…”

Section: 小天体地表模型unclassified