Numerical Study on Low-Velocity Impact Between Asteroid Lander and Deformable Regolith

Zeng, Xia; Li, Ziwen; Gan, Qingbo; Circi, Christian

doi:10.2514/1.g006659

Cited by 14 publications

(3 citation statements)

References 46 publications

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“…In this article, the attitude of the target is parameterized using a quaternion. The kinematics of the quaternion is given as [22,23]…”

Section: Dynamic Model Of Rotational Motionmentioning

confidence: 99%

“…In this article, the attitude of the target is parameterized using a quaternion. The kinematics of the quaternion is given as [ 22 , 23 ]

where

describes the orientation of any target-fixed coordinate frame (

) with respect to the inertial coordinate frame,

is the angular velocity of frame

with respect to frame

expressed in

, and

represents the quaternion multiplication.…”

Section: Mathematical Modelmentioning

confidence: 99%

See 1 more Smart Citation

Relative Motion Estimation Algorithm for Noncooperative Targets Considering Multiple Solutions of Rotational Parameters

Hu,

Wu,

Meng

et al. 2024

Sensors

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On-orbit servicing using a space robot is gaining popularity among the space community for both economic and safety aspects. In particular, the estimation of the relative motion of a noncooperative target is a challenging problem. This study presents a relative motion estimation scheme based on stereovision for noncooperative targets considering multiple solutions of rotational parameters. Specifically, the mass distribution of the target is identified based on the least-square method and the principle of conservation of angular momentum. Then, the determination of a unique principal axis coordinate frame of the target is employed to resolve the multiple-solution problem. In addition, an EKF (extended Kalman filter)-based filter with global observability is designed to estimate the full motion states and inertia parameters of the target. The convergence performance of the proposed method is verified by numerical simulation. The results also demonstrate that the method is robust to occlusion.

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“…In this article, the attitude of the target is parameterized using a quaternion. The kinematics of the quaternion is given as [22,23]…”

Section: Dynamic Model Of Rotational Motionmentioning

confidence: 99%

“…In this article, the attitude of the target is parameterized using a quaternion. The kinematics of the quaternion is given as [ 22 , 23 ]

where

describes the orientation of any target-fixed coordinate frame (

) with respect to the inertial coordinate frame,

is the angular velocity of frame

with respect to frame

expressed in

, and

represents the quaternion multiplication.…”

Section: Mathematical Modelmentioning

confidence: 99%

Relative Motion Estimation Algorithm for Noncooperative Targets Considering Multiple Solutions of Rotational Parameters

Hu,

Wu,

Meng

et al. 2024

Sensors

View full text Add to dashboard Cite

show abstract

“…Even though the capability of the ground-based observation has been dramatically increased, some small celestial bodies with lower albedos still cannot be recognized, such as the asteroid 2019 OK [3]. Therefore, asteroids have attracted more and more attention and become hot spots for space explorations [4][5][6][7][8][9][10][11]. If its orbit deviates slightly due to other perturbations such as the tidal effect, it is possible for it to collide with the Earth.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2022

Self Cite

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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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New meteoroid entry method with a deformable non-spherical N-body model

Li,

Zeng,

Alfriend

et al. 2023

Acta Mech. Sin.

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Numerical Study on Low-Velocity Impact Between Asteroid Lander and Deformable Regolith

Cited by 14 publications

References 46 publications

Relative Motion Estimation Algorithm for Noncooperative Targets Considering Multiple Solutions of Rotational Parameters

Relative Motion Estimation Algorithm for Noncooperative Targets Considering Multiple Solutions of Rotational Parameters

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

New meteoroid entry method with a deformable non-spherical N-body model

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