Improvements in miniaturized Hall Thrusters by use of high-temperature SmCo magnets and additive manufacturing techniques

2019 International Conference on Advances in Materials, Mechanical and Manufacturing

材料科学;机械制造

Olano, A.^1 ; Ren, J.^1 ; Zhang, G.^1 ; Tang, H.^2 ; Zhang, T.^3 ; Li, J.^4

Key Lab. of Spacecraft Des. Optimization and Dynamic Simulat. Technologies of Ministry of Education, School of Astronautics, Beihang University, Beijing

100191, China^1

Key Lab. of Spacecraft Des. Optimization and Dynamic Simulat. Technologies of Ministry of Education, School of Space and Environment, Beihang University, Beijing

100191, China^2

School of Materials Science and Engineering, Beihang University, Beijing

100191, China^3

Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics, Lanzhou

730000, China^4

关键词: Azimuthal distributions;    Conventional manufacturing;    Electric propulsion systems;    High temperature resistance;    Magnetic field distribution;    Manufacturing techniques;    Operational temperature;    Traditional manufacturing;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/576/1/012002/pdf
DOI  :  10.1088/1757-899X/576/1/012002

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This work presents the difficulties associated with the miniaturization of Hall Thruster engines and how state of the art materials and new manufacture techniques can potentially solve these problems. Hall Thrusters are electric propulsion systems that require specific magnetic field topography and uniform propellant distribution for optimal operation which is difficult to achieve with typical materials and by conventional manufacturing methods in miniaturized engines. To keep the optimal magnetic field distribution at small thruster sizes, it is shown that new alloys of SmCo permanent magnets can generate the desired magnetic field distribution and that their high-temperature resistance properties assure its operation temperature will be under the maximum operational temperature. In addition, whereas for the small dimensions required for the anode traditional manufacture methods only allow for simple designs, it is explained how the implementation of 3D-printing techniques can improve the uniformity in the azimuthal distribution of the propellant by allowing complex geometries in the design of the anode that are unattainable with traditional manufacturing.