Magnetic shield/discharge channel integrated structure of a Hall thruster

Abstract

The invention proposes a magnetic shield / discharge channel integrated structure of a Hall thruster, the structure includes an anti-sputtering ring, a cylindrical magnetic shield and an insulator, and the inner ring of the anti-sputtering ring is connected to the cylindrical magnetic shield through an external thread. The inner thread two on the inner wall of the screen is connected in cooperation, the outer ring of the anti-sputtering ring is connected through the inner thread one and the outer thread two on the outer wall of the cylindrical magnetic screen, the inner ring and the inner wall, the outer ring and the outer wall are respectively coaxial and have the same diameter, The annular cylindrical magnetic screen is fixed on the bottom plate of the thruster bracket, and the insulator is arranged between the annular cylindrical magnetic screen and the anode, and the circumferentially evenly distributed protrusions on the bottom of the concave platform of the insulator are connected to the circumferentially evenly distributed channels of the annular cylindrical magnetic screen bottom plate. hole fit. It solves the problems of separate design and manufacture, installation and adjustment of the magnetic screen and discharge channel in the prior art, and provides a magnetic screen / discharge channel integrated structure scheme of the Hall thruster, which improves the structure of the magnetic screen and ceramic discharge channel into The metal magnetic shield / discharge channel integrated structure simplifies the structure and size of the thruster.

Description

technical field [0001] The invention relates to a magnetic shield / discharge channel integrated structure of a Hall thruster, belonging to the technical field of the Hall thruster. Background technique [0002] Hall Effect Thruster (HET for short) is an electric thruster that uses orthogonal electromagnetic fields to ionize and accelerate atomic working fluids, convert electrical energy into ion kinetic energy, and obtain higher specific impulse. It has the characteristics of simple structure, high specific impulse, high efficiency, long working life, high power density, long service time in orbit, etc. It is suitable for attitude control, orbit correction, orbit transfer, power compensation, position maintenance, Repositioning, off-orbit processing, space exploration and interstellar voyage and other tasks are currently the most widely used and most mature electric propulsion systems in the world. [0003] The working principle of the Hall thruster is that two ceramic sleev...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of the prior art that the magnetic screen and the discharge channel of the Hall thruster are separately designed and manufactured, difficult to install and adjust, and provide a magnetic screen / discharge channel integrated structural scheme of the Hall thruster. The structure of the magnetic shield and the ceramic discharge channel is improved to an integrated structure of the metal magnetic shield / discharge channel, which simplifies the structure and size of the thruster

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