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A Method of Reducing Heat Load of Hall Thruster

A technology of Hall thruster and thermal load, which is applied in the direction of thrust reverser, machine/engine, design optimization/simulation, etc. It can solve the problems of reducing thruster efficiency and adverse effects of magnetic domain arrangement, so as to reduce thermal load and optimize The effect of magnetic shield temperature distribution and heat flow direction

Active Publication Date: 2020-07-24
山东连辰机械设备有限公司
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Problems solved by technology

[0004] However, for a high-power Hall thruster, if the magnetic shield has a high thermal load, the alignment of the magnetic domains will also be adversely affected, and even the ferromagnetic material will become a paramagnetic material, thereby greatly reducing the efficiency of the thruster

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  • A Method of Reducing Heat Load of Hall Thruster
  • A Method of Reducing Heat Load of Hall Thruster
  • A Method of Reducing Heat Load of Hall Thruster

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Embodiment Construction

[0025] like figure 1 , 2 As shown, the energy loss of the Hall thruster mainly includes the energy loss of the discharge chamber, the energy loss of the cathode and the energy loss of the excitation coil, wherein the energy loss of the discharge chamber mainly comes from ion energy, anode energy, and plasma to wall energy. Deposition, gas ionization energy, radiation energy loss, these energy losses account for 95% of the energy loss of the entire discharge chamber. Therefore, analyzing the above energy loss is of great significance for analyzing the energy loss ratio of the Hall thruster, and can also be used for the subsequent thermal balance. The establishment of the equation and the acquisition of the variable boundary conditions provide the basis.

[0026] like image 3 As shown, the heat flux density of the ion-to-discharge chamber wall and the heat flux of electrons to the anode wall are obtained from the calculation results of PIC / MCC. For the PIC / MCC algorithm, wall...

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Abstract

The invention belongs to the technical field of Hall thrusters, and in particular relates to a method for reducing the thermal load of the Hall thruster. The method for reducing the thermal load of the Hall thruster mainly comprises the following steps of: establishing a thermal balance model; solving the energy loss of a discharge chamber of the Hall thruster; determining the boundary conditionsof heat conduction; determining the size of the inner diameter of a radiating fin; and evaluating the performance of a magnetic field based on the influence of temperature on the magnetic field. A magnetic shield thermal optimization method of the invention can reduce the thermal load of the Hall thruster and optimize the temperature distribution and heat flow direction of a magnetic shield on thebasis of the magnetic field strength reaching a certain value, and lays a certain theoretical and practical foundation for the thermomagnetic correlation analysis of the Hall thruster in related research.

Description

[0001] Technical field [0002] The invention belongs to the technical field of Hall thrusters, and in particular relates to a method for reducing the heat load of the Hall thrusters. Background technique [0003] Hall thruster is an advanced electric propulsion device, which is widely used in the field of satellite position maintenance and attitude control, and has become the preferred propulsion device for future space vehicles due to its simple structure, high specific impulse, and high efficiency. The Hall thruster is accelerated by an electric field through the propellant in the thruster and confines the electrons in a magnetic field, using the electrons to ionize the propellant, accelerate the ions to generate thrust, and neutralize the ions in the plume. [0004] However, for high-power Hall thrusters, if the magnetic screen has a high thermal load, the arrangement of the magnetic domains will also be adversely affected, and even the ferromagnetic materials will become ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03H1/00
CPCF03H1/0031F03H1/0062G06F30/20G06F30/23G06F2119/08
Inventor 李保平
Owner 山东连辰机械设备有限公司
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