Self-breakdown type pulsed plasma thruster for annular cone-shaped structure anode

Abstract

The invention discloses a self-breakdown type pulse plasma thruster for an annular cone-shaped structure anode. An annular cone-shaped structure is arranged on the outer surface of an anode, so that alocal strong electric field is between the position and a cathode tube, realization of the self-breakdown discharge is facilitated when the surrounding gas pressure environment is suitable, the thruster can perform stabilized normal operation, components such as an igniter and an ignition circuit are eliminated, and the weight and complexity degree of the system are greatly reduced; and the anode, ceramic and the cathode form a narrow chamber to facilitate collection and even distribution of gas, a gas pressure environment required for self-breakdown discharge is formed, and the thruster canachieve self-breakdown.

Description

technical field [0001] The invention belongs to the technical field of spacecraft propulsion, and in particular relates to a self-puncture type pulse plasma thruster with an annular pyramid structure anode. Background technique [0002] The pulsed plasma thruster is a kind of energy storage by a capacitor, relying on the spark plug to induce or self-sustain discharge, and generate a high-current arc discharge between the positive and negative electrodes, so that the working fluid is ionized into plasma, which is ejected under the action of self-induced electromagnetic force and aerodynamic force. A pulsed plasma device that generates thrust. With low power, high specific impulse, simple structure, and light weight, it is especially suitable for tasks such as micro-nano satellite spin elimination, orbit positioning, orbit maneuvering, attitude control, and formation flight. [0003] The typical propellant of pulsed plasma thrusters widely used at present is polytetrafluoroet...

AI Technical Summary

Problems solved by technology

A typical gas thruster consists of: gas container, control valve, ignition system (including igniter and control part), which increases the complexity of the system to a certain extent, and the gas supply is often realized through ceramics.

To a certain extent, it increases the complexity of the ceramics and reduces the reliability of the thruster

In addition, the self-sustained breakdown of the coaxial flat thruster requires a small discharge distance, which also limits the increase of the thruster's caliber and the further improvement of its performance to a certain extent.

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