Azimuthal Velocity Measurement of μ 10 Microwave Ion Thruster by Laser Induced Fluorescence Spectroscopy
Azimuthal Velocity Measurement of μ 10 Microwave Ion Thruster by Laser Induced Fluorescence Spectroscopy
复制标题
激光诱导荧光光谱法测量μ10微波离子推进器方位角速度
DOI：
--
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
H. Kuninaka
中科院分区：
文献类型：
--
作者：
R. Tsukizaki;Yuta Yamamoto;Y. Yamashita;H. Kuninaka
本文报道了第一次地面研究，以测量产生滚转扭矩的离子推力器的方位角速度。通过离子推进器在空间中的运行，已经证实了推进器引起了关于离子束轴的意外滚转力矩。为了揭示产生这种扭矩的物理机制，将激光诱导荧光光谱应用于日本小行星探测器上安装的微波离子推进器。这种技术可以用来测量方位角速度，通过估计多普勒频移的速度函数的速度函数的P2（P2）6p [3] 5/2。为了简化这一问题，在没有中和剂阴极的情况下进行测量，以避免阴极影响离子束轨迹的可能性。成功地测量了方位角速度，发现其范围为-700至600 m/s。在此基础上，估算出绕推力轴的滚转力矩为0.5 μN·m。此外，方位角速度分布建模的基础上的旋转失调的网格和磁场从放电室，这将在口头报告。
This paper reports the first ground study to measure the azimuthal velocities of an ion thruster that produces roll torque. Through the operation of ion thrusters in space, it has been confirmed that thrusters cause an unexpected roll torque about the ion beam axis. To reveal the physical mechanism that produces this torque, laser-induced fluorescence spectroscopy was applied to a microwave ion thruster that has been installed in Japanese asteroid probes. This technique can be used to measure the azimuthal velocity by estimating the Doppler shift of the velocity functions of Xe II 5p(P2)6p [3] 5/2. To simplify this problem, the measurement was conducted without a neutralizer cathode to avoid the possibility of the cathode affecting the trajectory of the ion beam. The azimuthal velocities were successfully measured and were found to range from -700 to 600 m/s. The based on the results, the roll torque was estimated as 0.5 μN·m about the thrust axis. Also the azimuthal velocity profile was modeled based on the rotational misalignments of the grids and the magnetic field from the discharged chamber, which will be reported in oral presentation.