Magnetically shielded miniature (MaSMi) is a low power (≤1 kW) long life (>100 kg Xe throughput) magnetically shielded Hall thruster that features an internally mounted hollow cathode. The development model MaSMi Hall thruster was designed, fabricated, and tested in preparation for advancement into an engineering model design. The MaSMi - DM uses an ultra-compact internally-mounted heaterless hollow cathode, which has previously demonstrated stable operation over a discharge current range of 0.5–4 A. More than 100 heaterless ignitions were performed during this test campaign, revealing consistent and predictable start-up behavior. Component testing of a novel anode manifold used in the MaSMi-DM demonstrated peak-to-peak azimuthal propellant flow distribution variations of less than 3.2% across three flow rates and two anodes. Current–voltage-magnetic field testing of the MaSMi-DM was completed over a discharge voltage range of 200–600 V, a discharge current range of 0.5–...

中文翻译：

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具有内置空心阴极的低功率磁屏蔽霍尔推力器的性能表征

微型电磁屏蔽（MaSMi）是一种低功率（≤1 kW）的长寿命（> 100 kg Xe吞吐量）的电磁屏蔽霍尔推力器，其内部装有空心阴极。设计，制造和测试了开发模型MaSMi Hall推进器，以准备升级为工程模型设计。MaSMi-DM使用超紧凑的内部安装的无加热器空心阴极，该阴极先前已证明在0.5–4 A的放电电流范围内稳定运行。在此测试过程中进行了100多次无加热器点火，显示了一致且可预测的启动行为。在MaSMi-DM中使用的新型阳极歧管的组件测试表明，在三个流速和两个阳极之间，峰峰方位推进剂流量分布变化小于3.2％。