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

Gas flow control method for improving ionization efficiency of Hall thruster

A Hall thruster, gas flow technology, applied in thrust reversers, using plasma, machines/engines, etc., can solve the problems of low ionization efficiency and short neutral gas residence time, and achieve the effect of improving ionization efficiency

Active Publication Date: 2016-08-03
HARBIN INST OF TECH
View PDF3 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem of low ionization efficiency caused by the short residence time of neutral gas inside the discharge channel of the existing Hall thruster, thereby providing a gas flow control method for improving the ionization efficiency of the Hall thruster

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
  • Gas flow control method for improving ionization efficiency of Hall thruster
  • Gas flow control method for improving ionization efficiency of Hall thruster
  • Gas flow control method for improving ionization efficiency of Hall thruster

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0034] Specific implementation mode one: refer to Figure 2 to Figure 4 , Figure 17 to Figure 20 This embodiment is described in detail. The gas flow control method for improving the ionization efficiency of the Hall thruster described in this embodiment adopts a gas distributor, a gas outlet structure or a gas distributor and a gas outlet structure, and the gas distributor and the gas outlet structure are both It is a ring structure and can make the gas have a circumferential velocity component. The gas distributor and the gas outlet structure are fixed on the upstream part of the discharge channel. The axis of the gas distributor, the axis of the gas outlet structure and the axis of the discharge channel are all coincident. The gas distribution The device is located upstream of the upstream part, and the guide air outlet structure is located downstream of the upstream part.

[0035] like Figure 2 to Figure 4 In order to use COMSOL software to simulate the distribution of...

specific Embodiment approach 2

[0037] Specific embodiment 2: This embodiment is a further description of the gas flow control method for improving the ionization efficiency of the Hall thruster described in the specific embodiment 1. In this embodiment, the gas distributor includes multiple groups of gas distribution chambers 9 and distribution chambers. The base 10 of the distributor, the base 10 of the distributor is a ring structure, and the multiple groups of gas distribution chambers 9 are evenly distributed in the circumferential direction of the distributor base 10, and each group of gas distribution chambers 9 includes at least one level of buffer and exhaust holes; The devices are distributed along the axial direction in turn;

[0038] Each stage of buffer includes at least one air inlet 9-1 and a buffer chamber 9-2;

[0039] The air intake hole and the buffer chamber are distributed along the axial direction in sequence, the air inlet hole 9-1 communicates with the buffer chamber 9-2, and the last...

specific Embodiment approach 3

[0042] Specific implementation mode three: refer to Figure 5 to Figure 9Describe this embodiment in detail. This embodiment is a further description of the gas flow control method for improving the ionization efficiency of the Hall thruster described in Embodiment 2. In this embodiment, the exhaust holes are arranged on the inner wall and outer wall of the buffer chamber Or on the inner wall and the outer wall, the exhaust holes of the multiple groups of gas distribution chambers 9 form at least one row of exhaust holes, and each row of exhaust holes is evenly distributed in the circumferential direction of the inner wall or the outer wall of the distributor base 10, and the rows on the inner wall The axes of the air hole and the exhaust hole on the outer wall are parallel to the transverse plane perpendicular to the axial direction of the gas distributor. The included angle between the axis and the radial direction of the gas distributor is a, the included angle between the ...

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 a gas flow control method for improving the ionization efficiency of a Hall thruster and relates to the technical field of plasma propulsion. The gas flow control method aims at solving the problem that the staying time of neutral gas in a discharge channel of an existing Hall thruster is too short, and consequently the ionization efficiency is low. A gas distributor or a guiding gas outlet structure or the gas distributor and the guiding gas outlet structure is / are adopted. Each of the gas distributor and the guiding gas outlet structure is of an annular structure and can make gas have the circumferential speed component. The gas distributor and the guiding gas outlet structure are fixed to the upstream portion of the discharge channel. The axis of the gas distributor, the axis of the guiding gas outlet structure and the axis of the discharge channel coincide with one another. The gas distributor is located at the upper portion of the upstream part, and the guiding gas outlet structure is located at the lower portion of the upstream part. By means of the gas flow control method for improving the ionization efficiency of the Hall thruster, the ionization efficiency is effectively improved, and the gas flow control method is suitable for Hall thrusters.

Description

technical field [0001] The invention relates to the technical field of plasma propulsion. Background technique [0002] Electric propulsion has the advantages of high specific impulse, long life, compact structure, small size, and light pollution, so it has gradually attracted the attention and favor of the aerospace industry. Among them, Hall thrusters and ion thrusters are currently the most widely used space electric propulsion devices. The Hall thruster is a functional conversion device that converts electrical energy into kinetic energy of the working fluid by using the joint action of electric field and magnetic field. Part of the electrons emitted by the cathode enter the discharge chamber, and under the joint action of the orthogonal radial magnetic field and the axial electric field Make a circumferential drift pointing to the anode. The drift direction is related to the direction of the electric field and magnetic field. During the drift process, it will collide w...

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): F03H1/00
CPCF03H1/0006F03H1/0087
Inventor 丁永杰魏立秋于达仁李鸿
Owner HARBIN INST OF 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