Thrust Performance and Plasma Characteristics of Low Power Hall Thrusters
Thrust Performance and Plasma Characteristics of Low Power Hall Thrusters
复制标题
低功率霍尔推进器的推力性能和等离子体特性
DOI：
--
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
T. Yoshikawa
中科院分区：
文献类型：
--
作者：
H. Tahara;D. Goto;T. Yasui;T. Yoshikawa
使用 THT 系列霍尔推进器研究了低功率霍尔推进器的性能。 THT-IIIA推进器可在较宽的磁场强度范围内稳定运行。在恒定质量流量下，无论放电电压如何，都可以通过低放电电流和高推力实现高推力效率，以获得最佳磁场强度。结果，在 250-1800 W 的宽输入功率范围内，放电电压为 200-500 V，质量流量为 1-3 mg/s，推力和比冲范围分别为 10 至 70 mN 和 1200 至 2300 秒。推力效率范围为 30% 至 45%。此外，还进行一维流场计算以了解内部物理现象。发现电离和等离子体加速都有效地发生在加速通道出口附近几毫米厚的薄区域中。计算结果与实验结果大致吻合。
Low-power Hall thruster performance was investigated using THT-series Hall thrusters. The THT-IIIA thruster could be stably operated in a wide range of magnetic field strength. A high thrust efficiency was achieved with a low discharge current and a high thrust for an optimum magnetic field strength regardless of discharge voltage at a constant mass flow rate. As a result, both the thrust and the specific impulse ranged from 10 to 70 mN and from 1200 to 2300 sec, respectively, at discharge voltages of 200-500 V with mass flow rates of 1-3 mg/s in a wide input power range of 250-1800 W. The thrust efficiency ranged from 30 to 45 %. Furthermore, one-dimensional flowfield calculation was made to understand the inner physical phenomena. Both ionization and plasma acceleration were found to efficiently occur in a thin region with a few mm thick near the acceleration channel exit. The calculated results roughly agreed with the experimental ones.