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Evolution of the rotational motion of space debris acted upon by eddy current torque
Lin, Hou-Yuan1,2,3; Zhao, Chang-Yin1,2
2015-06-01
发表期刊ASTROPHYSICS AND SPACE SCIENCE
卷号357期号:2页码:167
摘要Finding analytical solutions to the eddy current torque produced by a conducting body rotating within a magnetic field is arduous. In this paper, the finite difference method is adopted to solve numerically the boundary problem regarding the distributions of eddy currents in determining eddy current torque. Through analysis of the solutions, this paper presents the expression of eddy current torque that applies to a model of arbitrary shape rotating around an arbitrary axis. The parameters of the physical properties of the rigid body are integrated into the eddy current torque tensor, the features of which are analogous to the inertia tensor. The elements in the tensor are constants for a specific rigid body; thus, in the expression, the torque is associated only with the relative angular velocity and magnetic field. The expression is used to investigate the evolution of the rotation of space debris subjected to eddy current torque, through numerical integration with the angular velocity of the variation of the geomagnetic field, which is assumed a dipole. The results explain the observed phenomenon of change in the spin decay rate. Moreover, the effects of gravity-gradient torque and orbit precession cause the self-spin of the space debris to resonate with the orbital motion and ultimately, to reach a steady state.
文章类型Article
关键词Boundary Problem Eddy Current Torque Rotational Motion Of Space Debris
WOS标题词Science & Technology ; Physical Sciences
学科领域天文和天体物理
DOI10.1007/s10509-015-2396-2
收录类别SCI
语种英语
资助项目PMO_LIB-IR
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000357338700014
引用统计
文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/14813
专题空间目标与碎片观测研究基地
作者单位1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, PMO, Key Lab Space Object & Debris Observat, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Lin, Hou-Yuan,Zhao, Chang-Yin. Evolution of the rotational motion of space debris acted upon by eddy current torque[J]. ASTROPHYSICS AND SPACE SCIENCE,2015,357(2):167.
APA Lin, Hou-Yuan,&Zhao, Chang-Yin.(2015).Evolution of the rotational motion of space debris acted upon by eddy current torque.ASTROPHYSICS AND SPACE SCIENCE,357(2),167.
MLA Lin, Hou-Yuan,et al."Evolution of the rotational motion of space debris acted upon by eddy current torque".ASTROPHYSICS AND SPACE SCIENCE 357.2(2015):167.
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