Micropulse plasma thruster

Abstract

The invention discloses a micropulse plasma thruster which is common anode type; cathode plates are symmetrically arranged at the periphery of an anode of the micropulse plasma thruster, a propellant is arranged between the anode and the cathode plates, and discharge chambers are formed in a space among the anode, the cathode plates and the propellant; anti-creeping ceramic insulating plates are arranged at the sides of the propellant; a cathode of a capacitor is connected with the cathode plates; an anode of the capacitor is connected with the anode; and spark plugs are arranged on the cathode plates. The invention provides a concept of a parallel-plate common-anode type micropulse plasma thruster based on an existing relatively-mature pulse plasma thruster technology for feeding the propellant on the tails of the parallel plates, and the meaning of the concept is that singe cathode plate is changed into four same cathode plates which are symmetrically arranged at the periphery of an anode plate with a hollow structure on the basis of the existing mature pulse plasma ion thruster design, so that four same discharge chamber structural designs are formed, impulse bit is improved while high specific impulse is kept, and therefore, the purpose of improving total impulse is realized.

Description

technical field [0001] The invention relates to a micropulse plasma thruster device used in space, and belongs to the technical field of spacecraft propulsion. Background technique [0002] The pulse plasma thruster is a kind of plasma based on the ignition electrode, which causes the capacitor to discharge and ablate the propellant surface between the two electrodes connected by the capacitor, and the vaporized and thermally ionized propellant is ejected under the action of electromagnetic force and aerodynamic force A pulsed plasma device that generates thrust. It is mainly used for tasks such as micro-nano satellite rotation elimination, orbit positioning (orbit insertion), long-term on-orbit (orbit maintenance), orbit and position adjustment, attitude control, formation flight, and orbit unloading. Electric propulsion technology has increasingly become one of the symbols to measure the advancement of related satellite platforms. The micropulse plasma thruster can gener...

AI Technical Summary

Problems solved by technology

According to the literature, some researchers use two or more discharge chambers, that is, one capacitor corresponds to two or more discharge chambers in one installation direction, to improve the total charge. However, this method increases the quality and space

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