Abstract The increasing demand for cost reduction in aerospace electric propulsion makes the application of krypton Hall thrusters a compelling choice. However, these thrusters continue to experience performance limitations. Nonetheless, their working performance and stability have been greatly improved via their operation in the rotating supply mode. The present study is based on previous research results pertaining to the rotating supply mode and subsequent studies of the specific mechanism by which the rotating supply mode influences the ionization process and performance of the krypton Hall thruster. The ionization performance of the thruster was analyzed using an image diagnosis method. The rotating supply mode reduces the width of the ionization zone, increases the ionization intensity, and moves the ionization zone upstream of the discharge channel. Considering the flow rate-ampere characteristics at a discharge voltage of 300 V, the rotating supply mode can reduce the width of the ionization zone by 10%–20%, increase the ionization intensity by approximately 14%, and move the maximum ionization intensity peak position nearly 2 mm upstream of the discharge channel, compared to the axial supply mode. The experimental data explains the mechanism by which the rotating supply mode optimizes the ionization process in the krypton Hall thruster.

中文翻译：

---

旋转供电方式对氪霍尔推进器电离参数的影响

摘要 航空航天电力推进对降低成本的需求日益增加，使得氪霍尔推进器的应用成为一个引人注目的选择。然而，这些推进器继续遇到性能限制。尽管如此，通过在旋转供电模式下运行，它们的工作性能和稳定性得到了很大的提高。本研究基于先前有关旋转供应模式的研究成果以及随后对旋转供应模式影响氪霍尔推进器电离过程和性能的具体机制的研究。使用图像诊断方法分析了推进器的电离性能。旋转供电方式减小了电离区的宽度，增加了电离强度，并将电离区移动到放电通道的上游。考虑300V放电电压下的流量-安培特性，旋转供电方式可使电离区宽度减小10%~20%，电离强度增加约14%，电离强度最大峰值移动与轴向供应模式相比，位于排放通道上游近 2 毫米的位置。实验数据解释了旋转供电模式优化氪霍尔推进器电离过程的机制。与轴向供电模式相比，将最大电离强度峰值位置移动到放电通道上游近 2 mm。实验数据解释了旋转供电模式优化氪霍尔推进器电离过程的机制。与轴向供电模式相比，将最大电离强度峰值位置移动到放电通道上游近 2 mm。实验数据解释了旋转供电模式优化氪霍尔推进器电离过程的机制。