Magnetic circuit structure design method under long service life design of magnetic focusing Hall thruster

A Hall thruster and magnetic focusing technology, which is applied in reducing greenhouse gases, nuclear power generation, electrical components, etc., can solve problems such as changes in magnetic field parameters and reduced excitation efficiency

Active Publication Date: 2018-07-20
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of greatly reduced excitation efficiency and changes in magnetic field parameters brought about by the long service life of the Hall thruster and the increase in the thickness of the ceramic wall surfac

Method used

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  • Magnetic circuit structure design method under long service life design of magnetic focusing Hall thruster
  • Magnetic circuit structure design method under long service life design of magnetic focusing Hall thruster
  • Magnetic circuit structure design method under long service life design of magnetic focusing Hall thruster

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Example Embodiment

[0037] Example 1:

[0038] A magnetic circuit structure design method under the long-life design of the magnetic focus Hall thruster. The method is as follows: first increase the thickness of the ceramic discharge channel wall, the inner magnetic screen and the outer magnetic screen to the original thickness of each component Then adjust the back section of the ceramic discharge channel wall to a segmented structure or reduce the thickness of the ceramic discharge channel wall at the back section of the ceramic discharge channel, and finally reduce the loss of excitation efficiency.

[0039] The specific steps of the method include:

[0040] Step 1: Such as figure 2 with image 3 Shown is the magnetic circuit structure of the HET-100 Hall thruster, which increases the wall thickness of the ceramic discharge channel from 3mm to 6mm;

[0041] Step 2: Use ferrite material to make the inner magnetic screen and outer magnetic screen of the magnetic focus Hall thruster to prevent magnetic ...

Example Embodiment

[0048] Example 2

[0049] A magnetic circuit structure design method under the long-life design of the magnetic focus Hall thruster. The method is as follows: first increase the thickness of the ceramic discharge channel wall, the inner magnetic screen and the outer magnetic screen to the original thickness of each component Then adjust the back section of the ceramic discharge channel wall to a segmented structure or reduce the thickness of the ceramic discharge channel wall at the back section of the ceramic discharge channel, and finally reduce the loss of excitation efficiency. The specific steps of the method include:

[0050] Step 1: Increase the wall thickness of the ceramic discharge channel from 3mm to 6mm;

[0051] Step 2: Use ferrite material to make the inner magnetic screen and outer magnetic screen of the magnetic focus Hall thruster to prevent magnetic saturation; and increase the thickness of the inner magnetic screen and the outer magnetic screen to 2 of their origi...

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Abstract

The invention relates to a magnetic circuit structure design method under the long service life design of a magnetic focusing Hall thruster and belongs to the Hall thruster design technical field. According to the method, the thickness of the wall surface of a ceramic discharge channel, the thickness of an inner magnetic screen and the thickness of an outer magnetic screen are increased, so that the service life of the thruster can be prolonged; the wall surface rear section of the ceramic discharge channel is adjusted to be a segmented structure or the ceramic discharge channel wall surface thickness of the rear section of the ceramic discharge channel is decreased; and therefore, low excitation efficiency loss can be realized. According to the inner magnetic screen and the outer magneticscreen, a soft magnetic ferrite material with a high magnetic permeability and a low thermal expansion coefficient is adopted to replace DT4C pure iron.

Description

technical field [0001] The invention relates to a magnetic circuit structure design method under the long-life design of a magnetic focus Hall thruster, and belongs to the technical field of Hall thruster design. Background technique [0002] As a mature electric propulsion device that has been applied in orbit, the Hall thruster's thrust performance and reliability in on-orbit applications are the core issues that are widely concerned at present. The ionization of the working fluid inside the discharge channel of the Hall thruster is the most important process in its work. The electrons collide with the neutral atoms to finally produce ions, and the ions are accelerated in the electric field generated by the thermalization potential and ejected out of the discharge channel. Ultimately generate thrust, the specific structure is as follows figure 1 shown. With the development of aerospace technology, space missions such as long-term spacecraft attitude and orbit adjustment ...

Claims

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Application Information

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IPC IPC(8): H05H1/10
CPCH05H1/10Y02E30/10
Inventor 于达仁宁中喜夏国俊李鸿朱悉铭刘星宇
Owner HARBIN INST OF TECH
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