An Insulated Anode Cathode Arc Propeller with Auxiliary Suspension Potential Electrode

Abstract

The invention provides an insulated anode cathode arc thruster with an auxiliary floating potential electrode, comprising a cathode (1), an auxiliary floating potential electrode (2), an insulating sleeve (3), an insulating anode (4) and an anode insulating layer (5 ); the insulating anode (4) is set on the insulating sleeve (3), and the surface of the insulating anode (4) is wrapped by the anode insulating layer (5); the insulating sleeve (3) is set on the cathode (1), and the cathode The surface of (1) is in close contact with the inner wall of the insulating sleeve (3); the auxiliary floating potential electrode (2) is located inside the insulating sleeve (3), and is in close contact with the inner wall of the insulating sleeve (3), increasing the The cathode current amplitude, the density of the plasma source is high, and the plasma source forms a directional jet, which improves the efficiency of the cathode arc thruster. The invention reduces the radial divergence of the jet plasma without affecting the plasma generation , so that more plasma is directional ejected along the insulating sleeve (3) to form a thrust, which greatly improves the propulsion capability of the cathode arc thruster.

Description

technical field [0001] The invention relates to the technical field of thrusters, in particular to an insulated anode-cathode arc thruster with auxiliary floating potential electrodes. Background technique [0002] With the development of micro-satellite technology, new requirements are put forward for its propulsion system, which needs to be able to achieve high specific impulse and high-efficiency output. Due to its advantages in structure and function, the electric propulsion system has gradually replaced the traditional chemical propulsion system and has become the main propulsion method of the micro-satellite system. Due to the characteristics of simple structure, light weight and high specific impulse, the cathode arc thruster has attracted more and more attention from all over the world. [0003] Existing cathodic arc thrusters use a bare metal discharge electrode structure. However, most of the generated plasma enters the metal electrode under the action of an exte...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies in the above-mentioned prior art that the amplitude of the cathode current is reduced, the density of the plasma source is not high, the orientation is poor, and the efficiency of the thruster is low, the present invention provides an insulated anode-cathode arc thruster with an auxiliary floating potential electrode , comprising a cathode (1), an auxiliary floating potential electrode (2), an insulating sleeve (3), an insulating anode (4) and an anode insulating layer (5); the auxiliary floating potential electrode (2) and the insulating anode (4) Both are sleeve structures, the insulating anode (4) is sleeved on the insulating sleeve (3), and the surface of the insulating anode (4) is wrapped by an anode insulating layer (5); the insulating sleeve ( 3) set on the cathode (1), and the surface of the cathode (1) is in close contact with the inner wall of the insulating sleeve (3); the auxiliary floating potential electrode (2) is located on the insulating sleeve (3) ), and in close contact with the inner wall of the insulating sleeve (3), the cathode current amplitude is increased, the density of the plasma source is improved, and the plasma source forms a directional jet, which improves the cathode arc thruster efficiency

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