An Ionic Liquid EFI Thruster with Liquid Supply Controlled by Electric Field

An ionic liquid, electric field control technology, applied in the direction of using plasma, thrust reverser, machine/engine, etc., to achieve the effect of improving stability, increasing total volume, and improving service life

Active Publication Date: 2022-03-18
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it uses liquid working fluid as the propellant. The thrust of the traditional porous media type ionic liquid EFI thruster decreases after the liquid working fluid is consumed to a certain extent. The disadvantage lies in the stability and life of the launch.

Method used

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  • An Ionic Liquid EFI Thruster with Liquid Supply Controlled by Electric Field
  • An Ionic Liquid EFI Thruster with Liquid Supply Controlled by Electric Field
  • An Ionic Liquid EFI Thruster with Liquid Supply Controlled by Electric Field

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Embodiment 1

[0029] An ionic liquid electrospray thruster with electric field controlled liquid supply disclosed in this embodiment includes a liquid storage tank 1, a copper sheet 3 covered with a hydrophobic dielectric layer, an insulating gasket 6 for controlling the distance between the copper sheets, and an upper casing. 2. Emitter 4, Extractor 5.

[0030] The liquid storage tank 1 is made of insulating material, with a length of 30mm, a width of 30mm, a height of 10mm, and a bottom wall thickness of 2mm. Design grooves on the opposite two side walls, 5mm long, 1.6mm wide and 4mm deep.

[0031] The hydrophobic dielectric layer is composed of N-type parylene with a thickness of 10 μm and Teflon with a thickness of 500 nm, and has good dielectric and hydrophobic properties.

[0032] The ionic liquid is 1-ethyl-3-methylimidazolium tetrafluoroborate (EMI-BF 4 ) with a contact angle of 100° with the hydrophobic dielectric layer in the initial state.

[0033] The copper sheet 3 covered w...

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Abstract

The invention relates to an ionic liquid electrojet thruster with liquid supply controlled by an electric field, and belongs to the technical field of micro-nano-satellite micro-propulsion. The invention comprises a liquid storage tank, a copper sheet covered with a hydrophobic dielectric layer, an insulating pad for controlling the distance of the copper sheet, an upper casing, an emitter, and an extraction electrode. The thruster uses an electric field to improve the wettability between the ionic liquid and the porous medium emitter, and at the same time controls the flow characteristics of the ionic liquid in the capillary channel through the electric field, which can realize the active supply of propellant and improve the emission of the ionic liquid EFI thruster. Stability and life, suitable for low-power micro-nano satellite drag compensation, position maintenance, attitude control and other mission requirements.

Description

technical field [0001] The invention relates to an ionic liquid electrospray thruster capable of controlling liquid supply by an electric field, and belongs to the technical field of micro-nano satellite micro-propulsion. Background technique [0002] Low cost, short development cycle, and flexible launch are the main advantages of micro-nano satellites. At present, micro-nano satellites have been widely used in communications, remote sensing, earth observation and space experiments, and have broad prospects. Because the micro-nano satellite is limited by the total power, mass and volume, its propulsion system needs to have the characteristics of low power consumption, light weight, small size, long life and accurate thrust. Ionic Liquid Electrospray Thruster (ILET) has the characteristics of small size, light weight, high specific impulse and high thrust accuracy, which can meet the requirements of micro-nano satellites for propulsion systems, and is an ideal propulsion sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03H1/00
CPCF03H1/0037
Inventor 武志文孙伟孙振宁韩雨宁王云冰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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