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A device for measuring beam divergence angle of a semicircular rake ion thruster

An ion thruster and semi-circular technology, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of low reliability of test data and few measuring points, and achieve the goal of more distributed measuring points, reduced quantity and lower cost Effect

Active Publication Date: 2019-09-10
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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Problems solved by technology

[0003] The disadvantage of this method is that only a single Faraday probe is installed on the scanning arm, there are few measuring points during scanning, and the reliability of the test data is low

Method used

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  • A device for measuring beam divergence angle of a semicircular rake ion thruster
  • A device for measuring beam divergence angle of a semicircular rake ion thruster

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Embodiment Construction

[0022] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] The invention provides a semicircular rake-shaped ion thruster beam divergence angle testing device, the basic principle of which is to design a semicircular Faraday probe assembly in the shape of a semicircular rake, and the semicircular Faraday probe assembly passes through the rotating assembly The driving assembly is connected, and the driving assembly drives the semicircular Faraday probe assembly to rotate to scan the plume area of ​​the ion thruster. The measurement and control component is connected to the Faraday probe and the driving component to realize the control of the driving component, the data collection of the Faraday probe and the calculation of the beam divergence angle.

[0024] figure 1 It is a block diagram of an embodiment of the beam divergence angle testing device of the semicircular rake ion thruster of the present invent...

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Abstract

The invention discloses a semicircular rake-shaped ion thruster beam divergence angle test device. A Faraday probe is fixed on a semicircular rake, the semicircular rake is a semi-circular unenclosedarc structure and is connected with a driving assembly through a rotation assembly, under the driving action of the driving assembly, a semi-circular framework can rotate around a semi-circular centerline of the framework, a plume area is scanned, beam density of different positions of the ion thruster plume area can be tested through a test control assembly, an ion thruster beam divergence anglecan be acquired through calculation. The device is advantaged in that beam density of the multiple positions of the plume area can be simultaneously tested, multiple measurement points are distributed, test data reliability is high, and the device is quite suitable for measuring beam divergence angles of electrical propulsion thrusters such as ion thrusters and Hall thrusters.

Description

technical field [0001] The invention relates to the technical field of thruster measurement, in particular to a beam divergence angle testing device for a semicircular rake-shaped ion thruster. Background technique [0002] In the document "Effect of discharge voltage on plume divergence of a high specific impulse Hall thruster.AIAA 2005-4403", a test method for the beam divergence angle of a Hall thruster is introduced. In this method, a Faraday probe mounted on a scanning arm is used to scan a 180° semicircle in the plume region, and then the beam divergence angle is calculated by integrating the obtained angular spatial distribution of the ion current. [0003] The disadvantage of this method is that only a single Faraday probe is installed on the scanning arm, and there are few measuring points during scanning, and the reliability of the test data is low. Therefore, it is necessary to design an ion thruster beam divergence angle testing device that is easy to operate an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T1/29
Inventor 陈焘李得天张天平杨俊泰顾左郭宁史楷田恺马欣魏志斌
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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