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Online monitoring device and method for parameters of electrons and atoms in discharge channel of krypton Hall thruster

A Hall thruster and discharge channel technology, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of increasing satellite launch costs, reducing payload, small specific impulse, etc., and achieve the effect of real-time monitoring of working status and accurate measurement

Active Publication Date: 2017-10-03
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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  • Online monitoring device and method for parameters of electrons and atoms in discharge channel of krypton Hall thruster
  • Online monitoring device and method for parameters of electrons and atoms in discharge channel of krypton Hall thruster
  • Online monitoring device and method for parameters of electrons and atoms in discharge channel of krypton Hall thruster

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Experimental program
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specific Embodiment approach 1

[0032] Specific implementation mode one: combine figure 1 Specifically explain this embodiment, an online monitoring device for electronic and atomic parameters in the discharge channel of a Krypton working substance Hall thruster described in this embodiment, including a light guide tube 100, an optical fiber 200 and a spectrometer 300;

[0033] The side wall of the discharge channel of the Hall thruster is provided with an axial test slot, which extends from one end of the channel to the other end along the axial direction of the discharge channel. The light guide 100 is inserted into the axial test slot, and the light guide 100 is used for The light in the discharge channel is introduced into 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, the material of the insulating wal...

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 tube 100 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 not only guides light but also insulates it.

specific Embodiment approach 3

[0038] Specific implementation mode three: combination figure 2 Describe this embodiment in detail. This embodiment is a further description of the on-line 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 guide tube 100 on the lead screw 600 , and the stepper motor 500 drives the lead screw 600 to move linearly, so as to drive the light guide tube 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] An axial test slot is provided along the axial direction of the discharge channel, the light guide tube 100 is inserted into the axial test slot, the lead screw passes through the progressive motor, and the stepping motor rotat...

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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 electronic and atomic parameters in a discharge channel of a krypton working substance Hall thruster. Background technique [0002] As satellites put forward higher requirements for life, the life of satellite thrusters has become the key. Traditional satellite chemical thrusters have high 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. Compared with traditional chemical thrusters, electric thrusters have the advantages of small size, light weight, high specific impulse and long life, which can reduce the cost of satellite launch and meet the life requirements of satellites, and have become a research hotspot in various countries. [0003] At present, Hall thrusters and ion thrusters are the main ones. Hundreds of electric thrusters have b...

Claims

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Application Information

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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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