Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ion thruster operation life evaluation method based on grid corrosion

A technology of ion thruster and operating life, which is applied in the field of plasma, can solve the problem of staggering costs and achieve the effect of reducing production costs

Active Publication Date: 2020-05-26
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
View PDF12 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the premise that the failure mechanism of the grid assembly is not clear, the life test cost of tens of thousands of hours for the thruster is quite staggering

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ion thruster operation life evaluation method based on grid corrosion
  • Ion thruster operation life evaluation method based on grid corrosion
  • Ion thruster operation life evaluation method based on grid corrosion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0014] A kind of ion thruster operating life evaluation method based on grid corrosion provided by the present invention, such as figure 1 As shown, it specifically includes the following steps:

[0015] Step 1. According to the potential barrier change caused by the enlargement of the accelerating grid aperture during the beam extraction process, establish the relationship between the acceleration grid aperture diameter change rate, the saddle point potential, the geometric structure parameters of the grid assembly and the gas-electric parameters, and then obtain the electron backlash The relationship between the life of the corresponding thruster and the geometric structure parameters and aeroelectric parameters of the grid assembly when the flow fails. At the same time, according to the generation of high-energy charge exchange (CEX) ions in the proces...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an ion thruster operation life evaluation method based on grid corrosion. The method comprises the following steps of substituting a test measurement result and a numerical simulation calculation result into a semi-empirical analysis model; calculating to obtain the operation life of the ion thruster; evaluating the operation life of the ion thruster by using limited test data. Therefore, the most critical factors of the influence of the service life of the ion thruster can be quickly determined, the links of machining, manufacturing, assembling, testing, testing and the like of the thruster after failure are effectively reduced, the production cost of products is reduced, and the application range and the application value of the ion thruster can be predicted in advance.

Description

technical field [0001] The invention belongs to the field of plasma technology, and in particular relates to a method for evaluating the operating life of an ion thruster based on grid corrosion. Background technique [0002] The high specific impulse and high efficiency of ion thrusters can significantly reduce the amount of propellant carried by the spacecraft and reduce the mass of the spacecraft, so it is widely used in satellite position maintenance, orbital maneuvering and deep space exploration tasks. However, the inherent low thrust of ion thrusters requires that it must have high reliability and long life when performing space missions, and generally requires tens of thousands of hours of reliable operation. [0003] During the operation of the thruster, the sputtering corrosion effect of the plasma on the thruster is mainly concentrated on the key components of the screen grid, the acceleration grid, the discharge chamber wall and the discharge cathode, and the spu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F119/04G01M99/00
CPCG01M99/00Y02T90/00
Inventor 耿海吴辰宸温晓东孙新锋贾艳辉陈娟娟
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com