A Carbon Nanotube Gas Field Ionization Thruster with Double Gate Structure

Abstract

The invention discloses a carbon nanotube gas field ionization thruster with a double gate structure, which belongs to the field of space propulsion technology. The invention mainly consists of three parts: a gas diffusion chamber, an ionization chamber and a secondary acceleration chamber. The gas diffusion chamber includes a ventilation base, a first isolation layer, an emitter base, a carbon nanotube emitter, and an emitter cold-pressed connection terminal. The gas enters the gas diffusion chamber through the ventilation base to complete the diffusion; the gas working medium enters the ionization chamber through the ventilation hole on the carbon nanotube emitter, and is charged in the ionization chamber by applying power to the cold-pressed terminal of the emitter and the cold-pressed terminal of the extraction grid. Achieve gas ionization and primary acceleration. The ionized gas ions enter the secondary acceleration chamber through the pores of the extraction grid, and the ionization after the secondary acceleration is sprayed through the pores of the acceleration grid by energizing the cold-pressed terminals of the extraction grid and the cold-pressed terminals of the acceleration grid. It is shown that the control of particle velocity is satisfied by changing the potential difference between the extraction grid and the acceleration grid in the secondary acceleration chamber.

Description

A carbon nanotube gas field ionization thruster with double grid structure technical field The present invention relates to a kind of carbon nanotube gas field ionization thruster of double grid structure, belong to the field of space propulsion technology area. Background technique Micro-thrust based on carbon nanotube field ionization is a kind of micro-electric thruster of new concept, which is mainly used in space. Micro-nano satellite precise attitude and orbit control and position maintenance. The thruster takes advantage of the high aspect ratio and array junction of carbon nanotubes on the emitter The structure generates a high field strength to achieve the ionization of the gas working medium, and accelerates the ejection under the action of the electric field to generate thrust. As mentioned in invention patent CN113027717A a kind of micro thruster based on carbon nanotube microporous array electrode, Cold-pressed terminals and terminals are used for ele...

AI Technical Summary

Problems solved by technology

[0004] The structure and layout of the existing technical schemes all use a single gate structure, which can realize the ionization and acceleration of the working fluid at the same time, but the speed of the extracted ions can only be changed by the potential difference between the gate and the emitter, and the adjustable range smaller

Images