A Gas Distributor/Anode Integrated Structure of a Hall Thruster

Abstract

A gas distributor / anode integrated structure of a Hall thruster belongs to the field of Hall thrusters. The invention aims to solve the problem of hole expansion of the gas outlet of the Hall thruster gas distributor and uneven distribution of neutral gas near the anode. The invention includes an anode and a gas distributor, the gas distributor is a two-stage buffer chamber, the lower end surface of the second-stage buffer chamber and the upper end surface of the first-stage buffer chamber are coaxially fixed together by laser welding; the outer circle of the second-stage buffer chamber A plurality of radial air outlet holes are evenly arranged on the side wall along the circumferential direction; the radial air outlet holes are flush with the radial center position of the discharge channel of the Hall thruster; The anode is a ring structure arranged on the upper end surface of the primary buffer cavity, and the anode and the primary buffer cavity are in one piece; the middle part of the circular side wall of the anode is a hollow structure, and the circumference is hollowed out The angle exceeds one-half of the entire circumference; the top of the anode is set in the zero magnetic field area of ​​the Hall thruster.

Description

technical field [0001] The invention belongs to the field of Hall thrusters. 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 anode is an important component of the Hall thruster body, which is responsible for receiving electrons and forming an important function of a discharge circuit. The ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of hole reaming of the gas outlet of the Hall thruster gas distributor and the uneven distribution of neutral gas near the anode, and provides a scheme for changing the structure of the gas distributor and integrating it with the anode

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