Hall thruster suitable for operating in wide parameter range

A Hall thruster and range technology, which is applied in the field of aerospace electric propulsion to achieve the effects of improving ionization efficiency and working medium utilization, improving performance under variable working conditions, and expanding stable working areas.

Active Publication Date: 2018-10-02
HARBIN INST OF TECH
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  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the current Hall thruster does not have high performance and stable working ability under the condition of wide parameter range, and to provide a Hall thruster suitable for working in a wide parameter range

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  • Hall thruster suitable for operating in wide parameter range
  • Hall thruster suitable for operating in wide parameter range
  • Hall thruster suitable for operating in wide parameter range

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Embodiment Construction

[0030] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0031] The high-efficiency ionization of the propellant working fluid is the basis for ensuring the stable and high-efficiency work of the Hall thruster. The ionization process mainly refers to the process in which a neutral gas is ionized into ions during the collision with electrons with a certain energy. For the Hall thruster, the distribution of the ionization process in the discharge channel is a self-c...

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Abstract

The invention discloses a Hall thruster suitable for operating in a wide parameter range and belongs to the technical field of space electric propulsion. By means of the Hall thruster, the problem that an existing Hall thruster does not have the high-performance stable operation capacity under the wide parameter range condition is solved. A ceramic channel of the Hall thruster is a continuous variable cross-section channel, and starting from the anode top face, the ceramic channel extends continuously from inside to outside at the expansion half angle of 7.1 degrees; the axial position of themagnetic field intensity peak is adjusted through a flexible magnetic circuit, and then the ionization position is controlled to adapt to different working medium flow conditions; when the working medium flow is small, ionization is carried out at an area, with small width and high working medium gas density, of the variable cross-section channel in an adjusted mode so that the through-flow density low limit value of sufficient ionization can be met; and when the working medium flow is high, ionization is carried out at an area, with large width and moderate working medium gas density, of thevariable cross-section channel in an adjusted mode, so that not only sufficient ionization of working media is ensured, but also overhigh thermal loads of part of a wall are avoided.

Description

technical field [0001] The invention belongs to the technical field of spaceflight electric propulsion, and relates to the technology of optimizing the performance of a Hall thruster through the cooperation of a ceramic channel structure and a magnetic circuit. Background technique [0002] The Hall thruster is the most widely used space electric propulsion technology in the world. It is an energy conversion device that uses the combined action of electric and magnetic fields to convert electrical energy into kinetic energy of working fluid. It has the advantages of simple structure, high specific impulse, high efficiency, long working life, high power density, long service time in orbit, etc. It is suitable for attitude control, orbit correction, orbit transfer, power compensation, position maintenance, Repositioning, off-orbit processing, deep space exploration and other tasks have become one of the most effective means for countries all over the world to reduce the total ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03H1/00B64G1/40
Inventor 李鸿于达仁丁永杰范昊天
Owner HARBIN INST OF TECH
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