Influence of Azimuthally Nonuniform Propellant Flow Rate on Thrust Vector and Discharge Current Oscillation in a Hall Thruster
Influence of Azimuthally Nonuniform Propellant Flow Rate on Thrust Vector and Discharge Current Oscillation in a Hall Thruster
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DOI：
10.2322/tstj.7.pb_41
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Y. Fukushima;Shigeru Yokota;K. Komurasaki;Y. Arakawa
中科院分区：
文献类型：
--
作者：
Y. Fukushima;Shigeru Yokota;K. Komurasaki;Y. Arakawa
在空间使用阳极层式霍尔推力器时，放电电流在10- 100khz频率范围内的振荡会引起严重的问题。在加速通道中建立方向非均匀推进剂流动是一种新的稳定放电方法。一个充气室被分成两个房间，分别以不同的流速向两个房间供应氙气。结果表明，在较大的质量流差和较宽的运行条件下，均能实现稳定的流量。在最大推力效率下，振荡幅度降低了94%。此外，测量了推力矢量，发现偏差角随差流量和磁通密度的变化而变化。
Discharge current oscillation at the frequency range of 10-100 kHz causes serious problems in using an anode layer type Hall thruster in space. As a new approach to the discharge stabilization, azimuthally nonuniform propellant flows were created in an acceleration channel. A plenum chamber was divided into two rooms to which xenon gas was supplied at different flow rates. As a result, stable discharge was achieved in wider operation conditions with the larger mass flow differential. The oscillation amplitude at the maximum thrust efficiency was decreased by up to 94%. In addition, thrust vector was measured and the deviation angle was found to vary with the differential flow rate and magnetic flux density.