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Braking of a Magnetized Body at the Interaction of Its Magnetic Field with a Rarified Plasma Flow
High Temperature ( IF 1 ) Pub Date : 2020-06-29 , DOI: 10.1134/s0018151x20020182
V. A. Shuvalov , N. A. Tokmak , Yu. P. Kuchugurnyi , N. P. Reznichenko

Abstract

The features of the flow around and the dynamic interaction of a magnetized sphere with a hypersonic flow of a rarefied plasma are studied via physical simulation. The dependences of the coefficients of the electromagnetic drag of a sphere on the ratio of the magnetic pressure to the dynamic pressure are obtained for the axial and orthogonal orientations of the plasma flow vectors and of the body’s own magnetic field. At an magnetic field of the sphere of 0.8–1.5 T, the electromagnetic force generated in the “magnetic field of the sphere–surrounding plasma” system is comparable to the pulse injected by plasma accelerators of special spacecraft designed for forced (“active”) removal of objects of space debris from the near-Earth space via their braking with a plasma jet, removing to lower orbits, and disposal by combustion in the dense layers of the Earth’s atmosphere. Small, permanent magnets can be used arranged in a particular manner (Halbach magnetic arrays) to create energy-efficient, compact sources of the magnetic field of these objects with an induction of 0.8–1.5 T.


中文翻译:

磁场与稀化等离子体流相互作用时磁化体的制动

摘要

通过物理模拟研究了绕流的特征以及磁化球体与稀有等离子体的高超声速流之间的动态相互作用。对于等离子流矢量和人体自身磁场的轴向和正交方向,可以获得球体的电磁阻力系数对磁压与动压之比的依赖性。在0.8–1.5 T的球体磁场下,“环绕球体的等离子体”系统中产生的电磁力可与专用于强迫(“主动”)航天器的等离子加速器注入的脉冲相媲美。通过等离子射流的制动从近地空间清除空间碎片,并移至较低的轨道,并通过燃烧在地球大气层中进行处置。可以使用以特殊方式排列的小型永磁体(哈尔巴赫磁阵列)来创建这些物体的磁场的节能,紧凑的源,感应强度为0.8-1.5T。
更新日期:2020-06-29
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