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Method for racemizing space non-magnetized metal debris

A metal debris, non-magnetization technology, applied in the direction of magnets, magnetic objects, permanent magnets, etc., can solve the problems of slow rotation speed of space debris, small derotation torque value, long derotation time, etc., to reduce derotation The time, enhance the anti-rotation torque, increase the effect of eddy current

Active Publication Date: 2017-02-15
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The prior art analyzes the generation mechanism and implementation method of eddy current torque. The magnetic field used is a constant magnetic field, and only depends on the eddy current torque generated by the rotational motion of the debris itself. The rotational speed of space debris is relatively slow, generally less than 60deg / s , the magnitude of the derotation torque is small, and the derotation time is longer

Method used

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  • Method for racemizing space non-magnetized metal debris
  • Method for racemizing space non-magnetized metal debris
  • Method for racemizing space non-magnetized metal debris

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Embodiment Construction

[0025] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0026] The present invention is a derotation magnetic field technology that utilizes the relative motion speed between an externally applied rotating magnetic field and non-magnetized metal fragments to accelerate the fragments to cut the magnetic lines of force, generate eddy currents in the metal fragments, and form eddy current torque. Its technical feature is that it contains the following content:

[0027] (1) The basic principle of derotation of rotating magnetic field

[0028] According to Faraday's law of electromagnetic induction, when a moving conductor cuts the magnetic force line, an induced electromotive force will be formed inside the conductor, and an eddy current will be generated, and the eddy current and the magnetic field will work together to generate an eddy current torque. For rotating fragments in a constant magnetic field, this eddy curre...

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Abstract

The invention relates to a method for recemizing space non-magnetized metal debris. By means of the relative motion speed between a rotating magnetic field and the debris, cutting magnetic lines of force of the debris are accelerated, an eddy torque is produced, the action effect of the eddy torque is improved, and the debris recemizing time is shortened. Compared with an existing study, the method has the following beneficial effects that the established rotating magnetic field opposite to the moving direction of the debris increases the relative motion speed between the rotating magnetic field and the debris and enlarges the eddy current produced by the cutting magnetic lines of force of the debris, and therefore the racemizing torque is enhanced, and the racemizing time is shortened.

Description

technical field [0001] The invention belongs to the rotating magnetic field technology for derotating non-magnetized metal fragments in space, and relates to a method for derotating non-magnetized metal fragments in space. The invention relates to a derotation magnetic field setting method which utilizes the relative motion between a rotating magnetic field and a conductor to accelerate the conductor to cut the magnetic force line and form a derotation torque, and belongs to the technical field of space debris cleaning. Background technique [0002] "Space debris" means non-functional man-made objects in Earth orbit or re-entering the atmosphere, including fragments and components thereof. With the increasing frequency of human spaceflight activities, the number of space debris is increasing exponentially, and they are concentrated in areas with an altitude of 800-1000km. Due to the influence of space perturbation, these debris are often in a state of high-speed spin motion....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G4/00H01F7/02
CPCB64G4/00H01F7/0273
Inventor 骆光照徐永强孙楚昕岳晓奎宋受俊
Owner NORTHWESTERN POLYTECHNICAL UNIV
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