Arcjet thruster capable of improving operation stability

Abstract

The invention provides an arcjet thruster capable of improving operation stability. The arcjet thruster comprises a cathode, a sealing piece, an insulating piece, a metal sleeve and an anode spraying pipe which are sequentially connected. The cathode, the sealing piece and the insulating piece are fixedly connected in sleeving mode in sequence. One end of the metal sleeve is connected with the insulating piece in a sleeving mode. The other end of the metal sleeve is clamped to the anode spraying pipe. The arcjet thruster further comprises a water cooling sleeve adaptive to the anode spraying pipe. The water cooling sleeve is additionally arranged on the outer wall face of the anode spraying pipe. A through way allowing cooling water to pass through is arranged in the water cooling sleeve. According to the arcjet thruster, the water cooling sleeve is additionally arranged near the outer wall face of the anode spraying pipe of the arcjet thruster, it is avoided that the temperature of the anode spraying pipe is excessively high, ablation of the inner wall face of the anode spraying pipe is lowered accordingly, and the operation stability of the arcjet thruster is improved.

Description

technical field [0001] The invention relates to the field of aviation technology, in particular to an arc heating engine which can improve the running stability of the engine. Background technique [0002] With the increasing space activities aimed at the detection and utilization of space resources, and the development of commercial communications, scientific exploration, and national defense missions, higher requirements have been placed on the propulsion system used for satellite attitude and orbit adjustment. Traditional chemical propulsion is limited by the combustion temperature of the propellant, the specific impulse is already close to the limit, and the control accuracy for satellite positioning is low. The electric propulsion system can generate a much higher specific impulse than chemical propulsion, so on the premise of completing the same space mission, it can reduce the weight of propellant that the satellite needs to carry, increase the payload of the satellit...

AI Technical Summary

Problems solved by technology

[0004] In the running experiments of arc heating engines in my country, problems such as serious ablation of engine electrodes, poor sealing under hot conditions, unstable engine performance, poor reliability, short continuous and stable working time, and low efficiency have been encountered, and the life of the propulsion system is limited. To a certain extent, it determines the life of the spacecraft. So far, my country's arc heating engine has not been successfully applied to its own satellites.

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