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Device for monitoring Hall effect thruster plume region product components

A Hall thruster and plume technology is applied in the field of monitoring the product components of Hall thrusters, which can solve problems such as spacecraft corrosion, charge accumulation, and communication influence, and achieve the effect of avoiding interference.

Active Publication Date: 2017-07-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The collision of neutral gas and fast ions will produce slow ions, which will be accelerated radially and flow back to the front of the thruster, causing corrosion and charge accumulation to the spacecraft
[0005] 2. Since the plume of the Hall thruster is in a plasma state, it has a shielding effect on electromagnetic waves, which may affect the communication on the spacecraft

Method used

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  • Device for monitoring Hall effect thruster plume region product components
  • Device for monitoring Hall effect thruster plume region product components

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specific Embodiment approach 1

[0021] Specific implementation mode one: combine figure 1 Specifically explain this embodiment, a device for monitoring product components in the plume area of ​​a Hall thruster, including a high-voltage power supply 100, a cathode plate 200, an electrode 300, a vacuum chamber 400, a filter 500, a nanosecond pulse laser 600, and an ICCD camera 700 and computer 800;

[0022] The cathode plate 200 is opposite to the electrode 300 and arranged in parallel in the vacuum chamber 400. The plume area of ​​the Hall thruster is located in the area between the cathode plate 200 and the electrode 300. The bias voltage output terminal of the high voltage power supply 100 is connected to The cathode plate 200, the zero-potential output terminal of the high-voltage power supply 100 is connected to the electrode 300;

[0023] The laser light emitted by the nanosecond pulse laser 600 passes through the second window 402 and is vertically incident on the cathode plate 200. The jet direction o...

specific Embodiment approach 2

[0028] Specific implementation mode two: combination figure 2 This embodiment is described in detail. This embodiment is a further description of the device for monitoring the product components in the plume area of ​​the Hall thruster described in the first embodiment. In this embodiment, in this embodiment, the signal Generator 900 , the rectangular signal output by the signal generator 900 triggers the nanosecond pulse laser 600 and the ICCD camera 700 synchronously.

[0029] ICCD camera and laser are controlled by the same signal generator. The signal generator produces a rectangular wave with a frequency of 100-1000Hz. The rectangular signal generated by the signal generator is input to the solid-state laser and ICCD, and the laser and ICCD are synchronously triggered to work. The fluorescent signal captured by ICCD is input into the computer and saved.

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Abstract

Relating to the monitoring technology of Hall effect thruster product components, the invention relates to a device for monitoring Hall effect thruster plume region product components to meet the need for analysis of Hall effect thruster plume region product components. A negative plate and an electrode are oppositely and parallelly disposed in a vacuum chamber, a Hall effect thruster plume region is located in an area between the negative plate and the electrode, a bias voltage output end of a high voltage power supply is connected to the negative plate, and a zero potential output end of the high voltage power supply is connected to the electrode. Laser emergent from a nanosecond pulse laser is vertically incident to the negative plate, the jet flow direction of a negative plate escape electron beam is perpendicular to the Hall effect thruster plume jet direction, electrons collide with plume region particles to generate fluorescence, an ICCD camera collects fluorescence through a filter, and the ICCD camera is connected to a computer. The device provided by the invention is suitable for monitoring the Hall effect thruster plume region product components.

Description

technical field [0001] The present invention relates to the monitoring technology of the product components of the Hall thruster. Background technique [0002] As satellites put forward higher requirements on life, the improvement of satellite thruster life becomes 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 been applied to satellites, mainly for performing...

Claims

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Application Information

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IPC IPC(8): G01N21/64
CPCG01N21/6402
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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