Electric thruster anode gas distributor

Abstract

The invention discloses an electric thruster gas distributor. The electric thruster gas distributor comprises a first welding screw, a second welding screw, a first gas inlet pipe, a second gas inletpipe, a first gas inlet pipe fixing seat, a second gas inlet pipe fixing seat, a distributor lower bottom and a distributor upper bottom, wherein a plurality of pairs of fixing key grooves, a circumferential gas conveying groove, a first gas inlet hole, a second gas inlet hole, a first counter bore, a second counter bore and radial gas conveying grooves are formed in the inner circumference and the outer circumference of the distributor lower bottom; and fixing keys corresponding to the plurality of pairs of fixing key grooves, a 0.32 mm jet hole, a 0.46 mm jet hole, a 0.56 mm jet hole, a 0.6mm jet slit and a 1 mm flow blocking plate are arranged on the inner circumference and the outer circumference of the distributor upper bottom. According to the technical scheme of the electric thruster gas distributor, the distribution of the gas flow can be controlled so as to achieve more uniform gas distribution, and a uniform and stable neutral particle environment is provided for an electricthruster.

Description

technical field [0001] The invention belongs to the technical field of electric propulsion, in particular to an electric thruster gas distributor. Background technique [0002] Due to its advantages of high specific impulse, long life, and small size, electric propulsion technology has been more and more widely used in space activities. With the development of microsatellites in recent years, small electric thrusters have gradually developed. The miniaturization of the electric thruster makes the size of the discharge channel smaller, which brings difficulties to the design of the anode gas distributor. The aerodynamic design of the traditional multi-hole electric thruster gas distributor will make the circumferential and radial distribution of the propellant gas in the discharge channel uneven, resulting in a much higher density of the propellant gas near the outlet of the intake pipe than in other areas. This makes the neutral particle environment in the discharge channe...

AI Technical Summary

Problems solved by technology

The miniaturization of the electric thruster makes the size of the discharge channel smaller, which brings difficulties to the design of the anode gas distributor

The aerodynamic design of the traditional multi-hole electric thruster gas distributor will make the circumferential and radial distribution of the propellant gas in the discharge channel uneven, resulting in a much higher density of the propellant gas near the outlet of the intake pipe than in other areas. This makes the neutral particle environment in the discharge channel uneven, the plasma discharge is uneven, and the flow of electrons to the anode is intensified, resulting in a decline in the efficiency of the electric thruster

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