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Non-triggering-type electrode capable of reducing arcing energy of vacuum electric arc thruster

A non-triggering, vacuum arc technology, used in thrust reversers, machines/engines, plasma utilization, etc., can solve the problems of complex vacuum arc thruster systems, high power requirements, and complex power supply structures, and achieve increased flash The probability of arcing, the simplification of the power supply structure, the effect of high application value

Pending Publication Date: 2018-06-22
XIAN AEROSPACE PROPULSION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the requirements for the power supply are very high, the structure of the power supply is relatively complicated, and the size and weight are large, which leads to the complexity of the entire system of the vacuum arc thruster.

Method used

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  • Non-triggering-type electrode capable of reducing arcing energy of vacuum electric arc thruster
  • Non-triggering-type electrode capable of reducing arcing energy of vacuum electric arc thruster

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) The cylindrical anode, the cylindrical ceramics, and the cylindrical cathode are coaxially arranged radially from the inside to the outside, so that the distance between the cathode and the anode is 0.1 mm to 2 mm;

[0022] (2) Coating a layer of graphite on the upper surface of the ceramics by using the coating method of vapor phase thin film deposition, vapor deposition for 20 hours, and the thickness of the graphite layer on the ceramic surface is 100 μm;

[0023] (3) Measure the resistance between the cathode and the anode, and the resistance is 7KΩ;

[0024] (4) Load high voltage to the vacuum arc thruster, the arcing voltage of the vacuum arc thruster is 320V, and the arcing current is 60A;

[0025] (5) The size of the power supply of the vacuum arc thruster is 100mm*100mm*100mm.

Embodiment 2

[0027] (1) The cylindrical anode, the cylindrical ceramics, and the cylindrical cathode are coaxially arranged radially from the inside to the outside, so that the distance between the cathode and the anode is 0.1 mm to 2 mm;

[0028] (2) Coating a layer of graphite on the upper surface of the ceramics by using the coating method of vapor phase thin film deposition, vapor deposition for 35 hours, and the thickness of the graphite layer on the ceramic surface is 300 μm;

[0029] (3) Measure the resistance value between the cathode and the anode, and the resistance value is 2.5KΩ;

[0030] (4) Load high voltage to the vacuum arc thruster, the arcing voltage of the thruster is 300V, and the arcing current is 60A;

[0031] (5) The size of the power supply of the vacuum arc thruster is 100mm*100mm*100mm.

Embodiment 3

[0033] (1) The cylindrical anode, the cylindrical ceramics, and the cylindrical cathode are coaxially arranged radially from the inside to the outside, so that the distance between the cathode and the anode is 0.1 mm to 2 mm;

[0034] (2) Coating a layer of graphite on the upper surface of the ceramics by using the coating method of vapor phase thin film deposition, vapor deposition for 40 hours, and the thickness of the graphite layer on the ceramic surface is 500 μm;

[0035] (3) Measure the resistance value between the cathode and the anode, and the resistance value is 1KΩ;

[0036] (4) Load high voltage to the vacuum arc thruster, the arcing voltage of the thruster is 280V, and the arcing current is 60A;

[0037] (5) The size of the power supply of the vacuum arc thruster is 100mm*100mm*100mm.

[0038] Therefore, within the range of 10 μm to 800 μm, the greater the thickness of the graphite coating, the smaller the required arcing energy. Using the electrode designed in t...

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Abstract

The invention provides a non-triggering-type electrode capable of reducing arcing energy of a vacuum electric arc thruster. According to the non-triggering-type electrode, the problems that an existing vacuum electric arc thruster needs large energy, and a power source is complex in structure and large in size and weight are solved. The non-triggering-type electrode comprises an anode and a cathode. The anode is cylindrical, and the cathode is in a drum shape and is coaxially arranged outside the anode in a sleeving mode; a drum-shaped insulating medium is further arranged between the cathodeand the anode, and the cathode and the anode both make contact with the insulating medium; and the exposed surface of the insulating medium is coated with a layer of conductive material. A non-triggering-type discharge is adopted, the flashover electric arc generating probability is increased, and the energy required for arcing of the vacuum electric arc thruster is reduced to a great extent; thestructure of a power source is simplified, and the size of weight of the power source are decreased; and the application field of the vacuum electric arc thruster is expanded, and thus the vacuum electric arc thruster has higher application value.

Description

technical field [0001] The invention belongs to the technical field of vacuum arc thrusters, in particular to a non-trigger electrode capable of reducing the arcing energy of the vacuum arc thruster, which is suitable for the ignition start of the vacuum arc thruster. Background technique [0002] Vacuum arc thruster, as a new type of high specific impulse, low power, miniaturized micro-thrust system, is increasingly being considered as a power source for micro-nano satellite platforms. [0003] In the traditional electrodes used in the vacuum arc thruster, the cathode and the anode are both cylindrical, because they are arranged coaxially and oppositely, and there is a vacuum gap between them, so that the energy required for the arcing of the vacuum arc thruster is very large, such as vacuum environment Under the condition that the distance between the cathode and the anode is 1 mm, the arcing voltage can reach 30 kV, and the required power can reach the order of kilowatts....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03H1/00
CPCF03H1/0093
Inventor 赵杨邓永锋方吉汉王妍李光熙杨明
Owner XIAN AEROSPACE PROPULSION INST
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