Propellant self-driven device of MEMS electrospray thruster

Abstract

A propellant self-driven device of an MEMS electrospray thruster comprises a storage box (1), a connecting device (2), a porous emitter electrode (3), an insulating alignment frame (4), a mounting silicon frame (5) and an extraction electrode (6), wherein propellant liquid is stored in the hollow part inside the storage box (1); the insulating alignment frame (4) is mounted at the upper part of the storage box (1); the extraction electrode (6) is mounted on the insulating alignment frame (4) through the mounting silicon frame (5) mounted at the edge of the extraction electrode (6); the porousemitter electrode (3) and the connecting device (2) are mounted between the extraction electrode (6) and the storage box (1); the porous emitter electrode (3) is connected to the upper part of the storage box (1) through the connecting device (2); and there is a potential difference between the porous emitter electrode (3) and the extraction electrode (6). The propellant self-driven device of theMEMS electrospray thruster solves the problem that an original electrospray propulsion system needs to be equipped with special propellant supply management devices such as a micro pump and a micro valve, and that the thrust precision is largely limited by the propellant supply precision of the micro valve and other mechanisms.

Description

technical field [0001] The invention relates to the technical field of liquid propulsion, in particular to a propellant driving device. Background technique [0002] Micro-nano satellites are an important direction for the development of satellites in the future. Micro-nano satellites have the advantages of low cost, short development cycle, strong expansion capability, flexible launch methods, etc., and are small in size and flexible in action; Or fly in formation to perform more complex space missions. This year, it has attracted the attention of various space powers, and the number of launches has increased year by year. [0003] However, with the increase in the complexity of micro-nano-satellite missions and the increase in the design life in orbit, corresponding propulsion modules will be required to complete their attitude control and orbit-keeping tasks; on the other hand, as the number of micro-nano-satellites increases, the Space resources will become tight, and ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, and to propose a MEMS electrospray thruster propellant drive device, which solves the problem that the original electrospray propulsion system needs to be equipped with special micropumps, microvalves and other propellant supply management device, and the thrust accuracy is largely limited by the propellant supply accuracy of microvalve and other mechanisms

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