Multistage cusped magnetic field plasma thruster with channel magnetic field guide structure

A technology of magnetic field guidance and cusp magnetic field, which is applied in the field of plasma thrusters, can solve the problems of long processing cycle of samarium cobalt permanent magnet materials, difficult adjustment of magnetic interface angle, and inconvenient adjustment, so as to shorten the processing cycle and avoid Effect of weakened magnetism and simple structure
CN104033346AActive Publication Date: 2014-09-10HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2014-09-10

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Abstract

The invention relates to an electric thruster, in particular to a multistage cusped magnetic field plasma thruster with a channel magnetic field guide structure, so as to solve the problems that magnetic field configuration of an existing thruster and the position of a magnetic mirror tip cannot be adjusted conveniently according to section changes of a discharge channel, the angle of a magnetic interface at the magnetic mirror tip is not easy to adjust, and a samarium cobalt permanent magnet material for variable cross-section experiments is long in processing cycle and high in cost. The plasma thruster comprises a ceramic bushing, an engine casing, four permanent magnets, five magnetic-conducting rings and five non-magnetic-conducting matching rings, the permanent magnets are round permanent magnets and arranged sequentially from top to bottom, the ceramic bushing is arranged among the four permanent magnets, the large-diameter port of the ceramic bushing faces upwards, the four permanent magnets are clamped together through the engine casing; the five magnetic-conducting rings are a first magnetic-conducting ring, a second magnetic-conducting ring, a third magnetic-conducting ring, a fourth magnetic-conducting ring and a fifth magnetic-conducting ring respectively. The plasma thruster is applied to the field of spaceflight.
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Description

technical field

[0001] The invention relates to an electric thruster, in particular to a multi-stage tangent magnetic field plasma thruster with a channel magnetic field guiding structure. Background technique

[0002] The multi-stage cusp magnetic field plasma thruster is a new type of electric thruster developed on the basis of the Hall thruster. The thruster is composed of multi-stage reverse ring permanent magnets to form a tangential magnetic field, and the periphery of the central discharge channel area is a ceramic sleeve. Electrons are emitted from the hollow cathode at the exit of the channel, and move to the anode upstream of the channel under the action of the electric field. Due to the magnetic mirror effect at the tip of the tangent magnetic field, the electrons are effectively shielded and will not collide with the ceramic wall. Magnetic field confinement, high-speed reciprocating motion between two magnetic tips. During this process, electrons will move to t...

Claims

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