A Mixed Effect Ring Ion Thruster Based on Segmented Anodes

Abstract

A mixed-effect annular ion thruster based on segmented anodes. First, the propelling working medium enters the discharge chamber from the outer annular working medium distributor located upstream of the grid, and the working medium gas is distributed at the normal velocity of the anode wall outside, so that the working The mass gas density is lower downstream of the cathode. A radial electric field is formed between the segmented anodes, and an E×B crossed field is formed in the downstream region of the cathode with the magnetic field passing through the cathode axis. Then, the biased cathode releases high-energy electrons, which are confined under the magnetic mirror effect of the permanent magnet and undergo circumferential Hall drift under the Hall effect of the E×B cross field, and simultaneously ionize the propellant to form a plasma. Subsequently, the plasma is extracted and accelerated by the ring grid. Finally, the electrons emitted by the neutralizer are neutralized to form a plume to generate thrust. The invention couples various effects based on the segmented anode design, which can improve the circumferential uniformity of high-energy electrons and plasma emitted by the biased cathode, improve grid working conditions and increase grid service life.

Description

technical field

[0001] The invention belongs to the technical field of electric propulsion, and more specifically relates to a mixed-effect ring-type ion thruster based on segmented anodes. Background technique

[0002] At the beginning of 2020, my country's lunar exploration program "Chang'e Project Phase III" was successfully completed, a deep space exploration network was initially established, and the Mars exploration program was put on the agenda. The primary problem in carrying out the Mars exploration mission is the carrying problem of the probe. If the probe wants to get rid of the gravity of the earth and enter the orbit of Mars, its flight speed must exceed the second cosmic speed. At the same time, the probe has to go through an extremely long flight time, during which it also withstands various forces, heat and radiation disturbances. Therefore, carrying out the Mars exploration mission puts forward higher requirements on the thrust, power, specific impulse, eff...

Examples

Embodiment Construction

[0028] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the present invention will be further described below with reference to the accompanying drawings and in conjunction with specific embodiments, so that those skilled in the art can implement it with reference to the description. The scope of protection is not limited to this specific embodiment. Apparently, the embodiments described below are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] Such as figure 1 , figure 2 A mixed-effect ring-type ion thruster based on a segmented anode is shown, including a segmented anode, a ring grid, a ring permanent magnet group, an outer ring ring-shaped working medium distributor, a bias discharge...

technical field

[0001] The invention belongs to the technical field of electric propulsion, and more specifically relates to a mixed-effect ring-type ion thruster based on segmented anodes. Background technique

[0002] At the beginning of 2020, my country's lunar exploration program "Chang'e Project Phase III" was successfully completed, a deep space exploration network was initially established, and the Mars exploration program was put on the agenda. The primary problem in carrying out the Mars exploration mission is the carrying problem of the probe. If the probe wants to get rid of the gravity of the earth and enter the orbit of Mars, its flight speed must exceed the second cosmic speed. At the same time, the probe has to go through an extremely long flight time, during which it also withstands various forces, heat and radiation disturbances. Therefore, carrying out the Mars exploration mission puts forward higher requirements on the thrust, power, specific impulse, eff...

Examples

Embodiment Construction

[0028] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the present invention will be further described below with reference to the accompanying drawings and in conjunction with specific embodiments, so that those skilled in the art can implement it with reference to the description. The scope of protection is not limited to this specific embodiment. Apparently, the embodiments described below are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] Such as figure 1 , figure 2 A mixed-effect ring-type ion thruster based on a segmented anode is shown, including a segmented anode, a ring grid, a ring permanent magnet group, an outer ring ring-shaped working medium distributor, a bias discharge...

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