Anode magnetic screen integrated structure for Hall thruster

Abstract

The invention discloses an anode magnetic screen integrated structure for a Hall thruster. The structure is composed of an outer ceramic cylinder, an inner ceramic cylinder, an anode, a magnetic conductive part, insulation ceramics, an insulation cap, a conductive column and a magnetic source; holes are evenly formed in the outer circle, with the largest maximum, of the anode, the anode has the gas homogenization effect, through the anode, the magnetically soft alloy material is adopted to achieve the magnetic conductive function, the magnet exciting coil manner is adopted in the magnetic source, the permanent magnet manner is adopted, the outer ceramic cylinder and the inner ceramic cylinder are arranged in an anode cavity, and therefore building of an insulation acceleration channel of the Hall thruster is achieved; during work, the anode with the high potential is isolated from other parts with different potentials through the insulation ceramics and the insulation cap; the anode is connected with other components through the conductive column, the anode is connected with the conductive column through the electron beam welding manner, the Hall thruster with the small size can achieve the focusing magnetic field type, and the type is the magnetic field type structure generally obtained by the high-performance Hall thruster.

Description

technical field [0001] The invention relates to an integrated structure of an anode magnetic shield for a Hall thruster, which is especially suitable for the magnetic circuit design of a small-sized Hall thruster, and belongs to the technical field of magnetic circuit design of a Hall electric thruster. Background technique [0002] Hall thruster is currently the most popular spacecraft electric propulsion technology in the world. It mainly includes hollow cathode, discharge chamber, magnetic pole, magnetic coil, anode / gas distributor, propellant delivery pipeline and support structure; it adopts Hall propulsion Technology can increase the payload of spacecraft, reduce launch costs, and extend service life. It is an effective means to improve the efficiency and competitiveness of commercial satellites in the future. The functions and tasks that Hall propulsion technology can complete include: orbit transfer, position maintenance and off-orbit processing of synchronous commun...

AI Technical Summary

Problems solved by technology

This results in a very small space between the inner ceramic cylinder and the inner magnetic pole, making it difficult to realize the arrangement of the inner magnetic shield

For the external magnetic screen, it is also difficult to arrange due to the limitation of size

Therefore, it is difficult to achieve a focused magnetic field design

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