Electrostatic thruster based on electric control and electrode plate thereof

Abstract

The invention belongs to the field of propellers, and particularly relates to an electrostatic thruster based on electric control and an electrode plate of the electrostatic thruster. The electrostatic thruster mainly comprises a shell, an electrode plate, a liquid storage cavity and a fixing frame, an emitting component is arranged outside the top end of the liquid storage cavity, the electrode plate comprises electrode plate holes evenly distributed in the electrode plate, the electrode plate holes are provided with variable hole diameters and straight hole diameters which are communicated with each other in the thickness direction of the electrode plate. Therefore, energy loss caused by direct impact on the electrode plate due to orbital offset of charged ions caused by a disordered electric field in the prior art is avoided, corrosion to the electrode plate is reduced, and resultant thrust of the charged ions is also increased. Meanwhile, the transition area of the variable aperture and the straight hole is designed to be in arc transition, so that the orbit offset of an additional electric field to the charged ions is reduced, and the charged ion loss caused by the fact that the charged ions entering the electrode plate holes cannot escape from the electrode plate holes due to the additional electric field is avoided.

Description

technical field [0001] The invention belongs to the field of thrusters, and in particular relates to an electric control-based electrostatic thruster and applications including the electrostatic thruster. Background technique [0002] Ionic liquid electric propulsion belongs to a kind of colloidal electric propulsion, which uses ionic liquid as propellant. Ionic liquids refer to room temperature molten salts, that is, liquids purely composed of anions and cations. By combining different anions and cations, they can be widely used in capturing and reusing fuel desulfurization, fuel cells, and electroplating metals. [0003] Ionic liquids generally have the characteristics of high electrical conductivity, negligible vapor pressure, low surface tension, and wide liquid temperature range. The thrust; while the vapor pressure is negligible and the characteristics of maintaining a liquid state make the storage and replenishment of the propellant easier, and the low surface tensio...

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Problems solved by technology

[0004] In the existing ionic liquid electric propulsion, the micro-droplets attracted by the electric field from the tip of the emission cone are easy to hit the electrode plate due to the complex electric field, and then cannot pass through the through hole on the electrode plate, resulting in charged micro-liquid The loss of droplets, such as the patent application with publication number CN110230582A, on the one hand greatly reduces the propulsion speed and wastes the propulsion energy, and on the other hand also causes the electrode plate to corrode and cause electric field disturbance due to too many charged droplets. , which further reduces the service life of the propeller

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