双环嵌套霍尔推力器的设计方法研究

To establish a design approach of nested Hall thrusters, the present study proposed a new 1D high-efficiency numerical model of the plasma transportation in the Hall discharge channel. The channel configuration could be iteratively designed by the 1D numerical model coupling with the mathematical correlation between the magnetic induction peak along the channel mid-line and the magnet space width. Based on the approach above, a 50 kW class nested Hall thruster was deductively designed, and a performance measurement test of this thruster was conducted to justify the design approach. The relative error of the corrected numerical model ranged within 16.6%~20.8%, and the time cost of the 1D high-efficiency numerical model of the plasma transportation was about 150 s. The performance parameters of the 50 kW class nested Hall thruster that designed by the present approach were showing that:the discharge power ranged 1.8~55 kW, the thrust ranged 0.12~2.56 N, the max specific impulse was 2 650 s.