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Electric thruster space plume detection device

A technology of electric thruster and detection device, applied in the field of plasma measurement, can solve problems such as not being a solution

Active Publication Date: 2019-01-22
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many ways to eliminate the non-axial beam current density, the simplest way is the sleeve-type Faraday probe, but considering the impact of particle collisions in the narrow and long tube, the sleeve-type Faraday probe is not an ideal the solution

Method used

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  • Electric thruster space plume detection device
  • Electric thruster space plume detection device
  • Electric thruster space plume detection device

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Embodiment Construction

[0035] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention provides a space plume detection device for an electric thruster and belongs to the field of plasma measurement of electric thrusters. The space plume detection device for the electric thruster comprises a base, a Faraday probe, an electric field generator and a grounded metal piece, wherein the Faraday probe is connected with the base; the electric field generator and the grounded metal piece are respectively connected with the base; an electric field can be generated between the electric field generator and the grounded metal piece; the Faraday probe is positioned in a space encircled by the base, the electric field generator and the grounded metal piece; the electric field generated between the electric field generator and the grounded metal piece is capable of shielding non-axial incident ions and low-speed incident particles, so that the Faraday probe can reach accurate space beam current density.

Description

technical field [0001] The invention relates to the field of electric thruster plasma measurement, in particular to an electric thruster space plume detection device. Background technique [0002] Electric thrusters such as ion thrusters and Hall thrusters are widely used in spacecraft attitude and orbit control because of their advantages such as high specific impulse, long life and small system mass. Accurately obtaining electric thruster vacuum plume parameters is crucial to evaluating the performance of electric thrusters and spacecraft. [0003] The vacuum plume of the electric thruster is plasma, which mainly contains ions, electrons and neutral gas molecules, etc. The beam current density distribution in the plume is an important indicator for evaluating the life of the electric thruster and its plume effect. The Faraday probe is used to measure A simple means and method for spatial ion density distribution. [0004] The ions received by the bare Faraday probe in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/62
CPCG01N27/62
Inventor 蔡国飙刘立辉苏杨贺碧蛟翁惠焱
Owner BEIHANG UNIV