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An online monitoring device and method for electronic and atomic parameters in the discharge channel of a kryptonian Hall thruster

A Hall thruster and discharge channel technology, applied in the measurement of color/spectral characteristics, etc., can solve the problems of increasing the cost of satellite launch, reducing the payload, increasing the number of satellites, etc., to achieve the effect of real-time monitoring of working status and accurate measurement

Active Publication Date: 2019-07-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional satellite chemical thrusters have large thrust but small specific impulse. To improve the life of the thruster, the chemical fuel carried by the satellite must be increased, which increases the cost of satellite launch and reduces the payload.

Method used

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  • An online monitoring device and method for electronic and atomic parameters in the discharge channel of a kryptonian Hall thruster
  • An online monitoring device and method for electronic and atomic parameters in the discharge channel of a kryptonian Hall thruster
  • An online monitoring device and method for electronic and atomic parameters in the discharge channel of a kryptonian Hall thruster

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Experimental program
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specific Embodiment approach 1

[0032] Specific implementation mode 1: Combination figure 1 To describe this embodiment in detail, the online monitoring device for electronic and atomic parameters in the discharge channel of a Krypton working medium Hall thruster described in this embodiment includes a light pipe 100, an optical fiber 200, and a spectrometer 300;

[0033] An axial test slit is opened on the side wall of the discharge channel of the Hall thruster. The axial test slit extends from one end of the channel to the other along the axial direction of the discharge channel. The light pipe 100 is inserted into the axial test slit, and the light pipe 100 is used for The light in the discharge channel is guided to the optical fiber 200, and the optical fiber 200 is connected to the spectrometer 300.

[0034] figure 1 701 is the discharge channel, L is the length of the discharge channel, 702 is the buffer cavity, 703 is the anode, 704 is the insulating wall surface, the material of the insulating wall surfa...

specific Embodiment approach 2

[0036] Specific embodiment 2: This embodiment is a further description of the online monitoring device for electronic and atomic parameters in the discharge channel of a krypton working substance Hall thruster described in specific embodiment 1. In this embodiment, the light guide 100 It is realized by hollow ceramic tube.

[0037] The light of the discharge channel is led out from the hollow ceramic tube and introduced into the optical fiber 200. The hollow ceramic tube can not only guide light but also insulate.

specific Embodiment approach 3

[0038] Specific implementation mode three: combination figure 2 Detailed description of this embodiment, this embodiment is a further description of the online monitoring device for electronic and atomic parameters in the discharge channel of a Krypton working substance Hall thruster described in the second embodiment. In this embodiment, it also includes connection Card 400, stepper motor 500 and lead screw 600;

[0039] The connecting piece 400 fixes the light pipe 100 on the lead screw 600, and the stepping motor 500 drives the lead screw 600 to move linearly, thereby driving the light pipe 100 to move back and forth.

[0040] The connecting card 400, the stepping motor 500 and the lead screw 600 constitute an axial movement device.

[0041] Axial test slits are provided along the axis of the discharge channel, the light pipe 100 is inserted into the axial test slit, the lead screw passes through the stepping motor, and the stepping motor rotates forward and backward to realize ...

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Abstract

The invention relates to online monitoring technology for the parameters of electrons and atoms in the discharge channels of krypton Hall thrusters and provides an online monitoring device and method for the parameters of electrons and atoms in the discharge channel of a krypton Hall thruster to meet the demand for monitoring of ionization degrees in the discharge channel of the krypton Hall thruster. The online monitoring device comprises a light guiding pipe, an optical fiber and a spectrometer, wherein the sidewall of the discharge channel of the Hall thruster is provided with an axial testing slit; the light guiding pipe is inserted into the axial testing slit and used for guiding light in the discharge channel into the optical fiber; and the optical fiber is connected with the spectrometer. The spectrometer measures the intensities of krypton atom spectral lines with wavelengths of 805.95 nm, 785.48 nm, 760.15 nm and 758.74 nm, respectively; and the temperature of electrons and the density of krypton atoms are calculated according to the intensities of the krypton atom spectral lines. The online monitoring device and method provided by the invention are applicable to monitoring of the parameters of electrons and atoms in discharge channels.

Description

Technical field [0001] The invention relates to an online monitoring technology of electron and atomic parameters in the discharge channel of a krypton working medium Hall thruster. Background technique [0002] As the satellite puts forward higher requirements on the life span, the life span of the satellite thruster becomes the key. The traditional satellite chemical thruster has a large thrust but a small specific impulse. To increase the life of the thruster, the chemical fuel carried by the satellite must be increased, which increases the satellite launch cost and reduces the effective load. Compared with traditional chemical thrusters, electric thrusters have the advantages of small size, light weight, high specific impulse, and long life. They can reduce the cost of satellite launch and can meet the requirements of the life of the satellite, which has become a research focus of various countries. [0003] At present, Hall thrusters and ion thrusters are the main ones. There...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25
CPCG01N21/25
Inventor 朱悉铭宁中喜刘晨光韩星孟圣峰王彦飞
Owner HARBIN INST OF TECH
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