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A recording device for visually recording and saving the shape of the magnetic induction line of an electric thruster

A magnetic induction line and electric thruster technology, which is applied in the direction of magnetic performance measurement, etc., can solve the problems of incomplete shape of magnetic induction line, omission of shape characteristics of magnetic induction line, and invisibility, etc., to ensure integrity, intuitive recording form, and simple and easy installation Use the effect

Active Publication Date: 2017-08-01
SHANGHAI INST OF SPACE PROPULSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The measured magnetic induction intensity and coordinate data need to be further processed to obtain the shape map of the magnetic induction line, which is not intuitive;
[0005] (2) A complex three-dimensional magnetic field measurement device is required;
[0006] (3) The measured magnetic induction intensity value is under discrete coordinates. If the measurement step is too large, important magnetic induction line shape features may be missed;
[0007] (4) It is necessary to place the electric thruster on a three-dimensional magnetic field measurement device for measurement, which is difficult to measure the shape of the in-situ magnetic induction line of the electric thruster before and after ignition and performance experiments installed in a vacuum chamber, so it is difficult to respond in time The shape change of the magnetic induction line of the electric thruster before and after the test;
[0008] (5) In order to avoid accidental contact with the electric thruster during the magnetometer measurement, causing damage to the electric thruster or the magnetometer, it is necessary to leave a sufficient safety distance during the measurement, so the magnetic field data close to the wall of the thruster may be missed , resulting in incomplete shape of the measured magnetic induction line

Method used

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  • A recording device for visually recording and saving the shape of the magnetic induction line of an electric thruster
  • A recording device for visually recording and saving the shape of the magnetic induction line of an electric thruster
  • A recording device for visually recording and saving the shape of the magnetic induction line of an electric thruster

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specific Embodiment approach 1

[0055] Specific embodiment one (recording layer is 52 degree paraffin)

[0056]The material of the recording layer used as the recording plate of the recording device in this embodiment is paraffin. Paraffin wax has the characteristics of low softening point (for example, the softening points of No. 52 and No. 54 paraffin waxes are 52°C and 54°C respectively), and it will melt into a liquid state when heated above the softening point temperature.

[0057] When it is necessary to record the shape of the magnetic induction line, place the recording plate on which the magnetic recording material is evenly spread on the recording layer on the heating plate, and then place the recording device in the area where the electric thruster needs to record the shape of the magnetic induction line. The magnetic coil of the electric thruster is energized to generate magnetic induction lines, and then the heating plate vibrates. At this time, the iron powder magnetic recording material with a...

specific Embodiment approach 2

[0058] Specific embodiment two (heating plate utilizes twisted heating wire to heat)

[0059] In this embodiment, the heating plate used as the recording device is heated by a twisted heating wire passing a certain current. The heating power of the twisted heating wire is sufficient to soften the recording layer of the recording board into a liquid state. The heating wire can be embedded in the base plate of the heating plate, and can also be located under the heating plate. If the heating plate is heated by the principle of heating the wires, a certain strength of the magnetic field will be generated after the wires are energized, which will superimpose with the magnetic field of the electric thruster and affect the rearrangement of the magnetic recording material, which may cause the recorded magnetic induction line shape and electric current The shape of the original magnetic induction line of the thruster has a large difference, which causes a large recording error and ev...

specific Embodiment approach 3

[0060] Specific embodiment three (heating layer is heated by hot water)

[0061] The heating plate of the recording device of this embodiment is heated using a heating water pipe through which hot water is passed. The temperature of the hot water is higher than the softening temperature of the recording layer, which is enough to soften the recording layer into a liquid state. The heating water pipe of the heating plate can be embedded in the base plate of the heating plate, and can also be located at the lower part of the base plate of the heating plate. Using hot water for heating will not generate additional magnetic field, so it will not affect the magnetic field of the electric thruster itself, so as to accurately record the shape of the magnetic induction line of the electric thruster.

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Abstract

The invention discloses a recording device for recording and storing an electric thruster magnetic induction line shape in a visible mode. The recording device comprises a recording plate, soft magnetism recording material particles, a heating plate and a support. Low softening points or low melting points are arranged on the recording plate in a coating mode, and the recording plate is a solid recording layer under normal temperature. The heating plate is arranged on the support. A heating and vibration device is arranged on the heating plate. During recording, soft magnetism recording materials are evenly scattered on the recording plate before recording, the soft magnetism recording materials are distributed in a magnetic induction line shape under the vibration effect of an electric thruster electric magnetic field and the heating plate, then the heating plate heats the recording plate, so that the recording layer is softened and is in a liquid state, the soft magnetism recording materials are embedded into the recording layer under the effect of gravity, and after the recording layer is cooled and solidified, the magnetic induction line shape can be recorded and stored in the visible mode. The recording device has the advantages that measuring is convenient, the recording mode is visible, and the recording device can be used for measuring of the magnetic induction line shape of an electric thruster arranged on a testing working position.

Description

technical field [0001] The invention relates to the visual measurement of the shape of the magnetic induction line of the static magnetic field of the spacecraft electric thruster, which is suitable for the shape measurement of the magnetic induction line during the development and product inspection of Hall thrusters and ion thrusters, so as to check the accuracy of the shape design of the magnetic induction line sex. Background technique [0002] At present, satellites, deep space probes and other spacecraft have widely used electric thrusters with high specific impulse. The correct shape and strength design of the magnetic induction line is the prerequisite for the efficient operation of electric thrusters such as Hall thrusters and ion thrusters. Magnetic field measurement is an important way to test the effect of magnetic field design. At present, the magnetic field of the electric thruster is generally measured by a magnetometer installed on the moving mechanism. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/12
Inventor 杭观荣康小录赵震梁伟
Owner SHANGHAI INST OF SPACE PROPULSION