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

Ion thruster service life evaluating method based on grid corrosion morphology and electronic backflow

An ion thruster and life assessment technology, which is applied in the fields of instruments, electrical digital data processing, special data processing applications, etc., can solve the problems of long life assessment test time and poor life prediction accuracy of ion thrusters.

Active Publication Date: 2018-07-13
CHINA ACADEMY OF SPACE TECHNOLOGY
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide an ion thruster life evaluation method based on grid corrosion morphology and electron backflow, and to solve the long life evaluation test time of the ion thruster and the accuracy of life prediction poor problem

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 service life evaluating method based on grid corrosion morphology and electronic backflow
  • Ion thruster service life evaluating method based on grid corrosion morphology and electronic backflow
  • Ion thruster service life evaluating method based on grid corrosion morphology and electronic backflow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0060] Aiming at the deficiencies in the prior art, the present invention proposes a method for evaluating the life of an ion thruster based on gate corrosion morphology and electron backflow, including the following steps:

[0061] Step 1, data acquisition of gate corrosion morphology

[0062] First of all, the characteristic quantities representing the corrosion morphology of the ion thruster grid are collected, mainly "corrosion depth of the surface groove downstream of the acceleration grid" and "diameter of the acceleration grid hole". in:

[0063] a) The groove corrosion depth on the downstream surface of the accelerating grid is based on the maximum value of the average groove corrosion depth of the three grid holes in the central area, that is in d ij (t) is the ith (i=1,2,...,nd, n d ≥3) grid hole and the groove corrosion depth of the surrounding jth (j=1,2,...,6) adjacent grid hole (such as figure 1 shown);

[0064] b) The diameter of the acceleration grid ho...

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 service life evaluating method based on grid corrosion morphology and electronic backflow. The method comprises the steps of firstly collecting the corrosion depth of a groove in the surface of the downstream of an accelerating grid and the diameter of a grid hole of the accelerating grid, building a grid corrosion degradation model, determining grid corrosion degradation model parameters, obtaining a grid corrosion fitting degradation model, then, estimating the service life of an ion thruster, collecting electronic backflow limit voltage data under different testing times, building an electronic backflow limit voltage degradation model, determining grid corrosion degradation model parameters, obtaining a grid corrosion fitting degradation model, estimating the service life of the ion thruster, and finally comprehensively estimating the service life of the ion thruster.

Description

technical field [0001] The invention relates to the technical field of ion thruster life evaluation, in particular to an ion thruster life evaluation method based on grid corrosion morphology and electron backflow. Background technique [0002] The electric propulsion system is an advanced space propulsion system, which has the characteristics of high specific impulse, high efficiency, and low thrust, and can effectively improve the service life and carrying capacity of satellites in orbit. In recent years, the application of electric propulsion in space propulsion has become more and more common. Compared with chemical propulsion, electric propulsion has the outstanding advantage of high specific impulse, which can greatly reduce the amount of propellant carried by satellites, thereby increasing the payload ratio of satellites, prolonging on-orbit life, and reducing launch weight. [0003] Xenon ion thruster is an important member of the electric thruster family, and its sp...

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
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2119/04
Inventor 王宗仁王敏林逢春王珏吴继峰
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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