Anode gas distributor of Hall electric thruster

Abstract

The invention discloses an anode gas distributor of a Hall electric thruster. The anode gas distributor comprises a gas inlet pipe, a gas pipe connecting piece, an anode magnetic conductive ring, a primary gas distributor and a secondary gas distributor, wherein a first vent hole is formed in the bottom of the U-shaped annular anode magnetizer; a second vent hole is formed in the lower side of the I-shaped annular first-stage gas distributor, and a third vent hole is formed in the upper side of the I-shaped annular first-stage gas distributor; and fourth vent holes are respectively formed in the inner side and the outer side of the n-shaped secondary gas distributor. And the anode magnetic conductive ring, the first-stage gas distributor and the second-stage gas distributor are respectively welded through electron beams to form a third-stage buffer structure with a first-stage buffer cavity, a second-stage buffer cavity and a third-stage buffer cavity. Through the technical scheme of the invention, the flow of the gas entering the anode of the Hall electric thruster can be effectively controlled and distributed, so that the flowability of the gas is more stable and uniform, and a stable and uniform neutral particle environment is provided for the Hall electric thruster.

Description

technical field [0001] The invention belongs to the technical field of electric propulsion, in particular to an anode gas distributor of a Hall electric thruster. Background technique [0002] Hall electric thruster is currently the most widely used and mature electric propulsion system in the world. Compared with chemical propulsion, Hall electric propulsion has the advantages of high specific impulse, long life and light weight. It is used in attitude control and orbit of spacecraft. Transfer and lift, orbit correction, drag compensation and other tasks. [0003] The anode gas distributor is an important part of the Hall electric thruster. Through long-term experimental research on the Hall thruster, it is found that the uniform stability of neutral gas in the anode discharge channel environment has a significant impact on plasma discharge: when When the neutral gas in the discharge channel is not uniform, the plasma discharge will be uneven, which will affect the efficie...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that the neutral gas in the discharge channel of the Hall electric thruster is not easy to be stable and uniform, the present invention proposes an anode gas distributor of the Hall electric thruster, which uses a The first-level gas distributor, the second-level gas distributor and the anode magnetic ring are integrated by electron beam welding to form a three-level buffer chamber, which makes the neutral gas more stable when flowing through the third-level buffer chamber to the discharge channel. uniform, the invention has a simple structure, and simultaneously reduces the difficulty and cost of the anode gas distributor in the preparation process

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