Rotational flow gas outlet structure for magnetic focusing hall thruster

Abstract

The invention relates to a rotational flow gas outlet structure for a magnetic focusing hall thruster and belongs to the field of hall thrusters. The rotational flow gas outlet structure solves the problem of the poor ionization characteristic of an existing high-specific-impulse krypton working medium hall thruster. The rotational flow gas outlet structure comprises a top guide plate, a middle guide plate, a gas distributor base, an installation pillar, a gas guide tube, a discharge channel and a positive pole. The top guide plate, the middle guide plate and the gas distributor base are arranged in parallel from top to bottom and are fixedly connected to form a primary buffer chamber and a secondary buffer chamber in a laser welding manner. The primary buffer chamber and the secondary buffer chamber are coaxially arranged in the discharge channel, and the top guide plate guides neutral gas through inclined holes to rotate in the discharge channel. The positive pole is arranged on theportion, close to the top guide plate, inside the discharge channel. The gas guide tube and the installation pillar are welded to both sides of the bottom of a gas distributor. By the adoption of therotational flow gas outlet structure, the utilization rate of a working medium is increased effectively, and especially the effect on the improvement of the ionization performance of the krypton working medium is outstanding.

Description

technical field [0001] The invention relates to a swirling air outlet structure of a magnetically focused Hall thruster, belonging to the field of Hall thrusters. 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 produces thrust. [0003] With the development of aerospace technology, the power that spacecraft can provide continues to increase, and other supporting technologies are also constantly innovating. New space missions increasingly require el...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of poor ionization characteristics of the existing high specific impulse krypton working medium Hall thruster, the present invention proposes a swirling gas outlet structure of the magnetic focusing Hall thruster, and the adopted technical scheme is as follows:

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