A device for controlling plume divergence angle of Hall thruster
A technology of plume divergence angle and Hall thruster, which is applied in the field of plasma, can solve problems such as damage to antenna and spacecraft components, corrosion of thruster parts, and excessive plume divergence angle, achieving simple structure and wide application range , easy to achieve effect
Active Publication Date: 2021-07-16
HARBIN INST OF TECH
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Problems solved by technology
[0005] The present invention aims to solve the problems of thrust loss caused by the excessive plume divergence angle of the existing Hall thruster, corrosion of thruster components such as ceramic passages and hollow cathodes, and damage to spacecraft components such as antennas and solar panels, and further proposes A device for controlling the plume divergence angle of the Hall thruster is developed, which can effectively control the movement of ions in the plume area. The device has the advantages of simple structure and strong applicability, and expands the degree of freedom of the plume divergence angle control method. , laying the foundation for space applications of high-reliability thrusters and spacecraft
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specific Embodiment approach 1
[0025] Specific implementation mode one: see figure 1 This embodiment will be described. A device for controlling the plume divergence angle of a Hall thruster described in this embodiment includes a permanent magnet 1, a ceramic shell and an electrode 2, the ceramic shell is in a closed ring shape, and the inner surface of the ceramic shell is provided with an electrode 2 , a permanent magnet 1 is enclosed in the ceramic shell.
[0026] The ceramic shell includes an outer ceramic 3, an upper inner ceramic 4 and a lower inner ceramic 5, the outer ceramic 3 is located on the outer surface of the ceramic shell, the upper inner ceramic 4 is located above the electrode 2, and the lower inner ceramic 5 is located Below the electrode 2, its section structure is as follows figure 1 shown.
[0027] The permanent magnet 1 is wrapped in an aluminum oxide ceramic shell to prevent it from being overheated by ion sputtering, thereby affecting its magnetism. The Invar electrode 2 is pla...
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The invention discloses a device for controlling the plume divergence angle of a Hall thruster. The device includes a permanent magnet, a ceramic shell and electrodes. The ceramic shell is in a closed ring shape. magnet. The invention solves the problems of thrust loss, erosion of thruster components, and damage to spacecraft components caused by excessively large plume divergence angles of the existing Hall thruster, and proposes a method for controlling the plume divergence angle of the Hall thruster The device can effectively control the movement of ions in the plume area. This device has the advantages of simple structure and strong applicability, and expands the degree of freedom in the control mode of the plume divergence angle. It is a space application for high-reliability thrusters and spacecraft. Foundation.
Description
technical field [0001] The invention relates to a device for controlling the plume divergence angle of a Hall thruster, and belongs to the fields of aerospace electric propulsion technology and plasma technology. Background technique [0002] The rapid development of today's space science and technology has achieved world-renowned achievements. However, the ever-expanding space missions have put forward higher requirements on the functions and performance of space vehicles, and the electric propulsion devices that provide power for space vehicles are also facing urgent challenges. technological upgrades and even innovations. As the most widely used space electric propulsion technology in the world, the Hall thruster has the advantages of simple structure, high specific impulse, and long life compared with traditional chemical thrusters; compared with other electric thrusters, it has The power and thrust range are large, the specific impulse is moderate, and it is free from ...
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IPC IPC(8): F03H1/00
Inventor 丁永杰李鸿魏立秋于达仁
Owner HARBIN INST OF TECH