Study on the high efficiency Hall thruster for space use

航天用高效霍尔推进器研究

• 批准号: 20560735
• 负责人: MIYASAKA Takeshi
• 金额: $ 3万
• 依托单位: Gifu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20560735/
• 关键词: ホール推進機; 電気推進機; 粒子シミュレーション; 壁面効果; 航空宇宙工学; ロケット; プラズマ; 電気推進; ホールスラスタ; 流体; シミュレーション工学

To develop Hall thrusters having high efficiency, focusing on interactions of plasma with acceleration channel walls, effects of acceleration channel on thruster operations were studied experimentally and numerically. Investigations were performed for different propellants and orifice radial positions. As results of numerical analyses using a developed particle code, it is found that in the case of xenon having a small ionization energy, the discharge current oscillation amplitude is large and the thrust efficiency is high. In the case of the orifice installed near the channel wall, the amplitude of discharge current oscillation was suppressed. This tendency was confirmed by the experiments. A loss of plasma to the acceleration channel walls in the upstream region for the orifice installed near the channel wall is larger than that for the orifice installed at intermediate position between the walls. Thus, it is found that in operations, determinations of orifice position by numerical investigations of the discharge current oscillation and thrust efficiency are required.

为了开发高效的霍尔推进器，重点关注等离子体与加速通道壁的相互作用，通过实验和数值研究了加速通道对推进器操作的影响。对不同的推进剂和孔口径向位置进行了研究。使用开发的粒子代码进行数值分析的结果发现，在电离能小的氙的情况下，放电电流振荡幅度大并且推力效率高。在孔口安装在通道壁附近的情况下，放电电流振荡的幅度被抑制。这种趋势已被实验所证实。对于安装在通道壁附近的孔口，到上游区域中的加速通道壁的等离子体损失大于安装在壁之间的中间位置的孔口的等离子体损失。由此可知，在运行中，需要通过放电电流振荡和推力效率的数值研究来确定节流孔位置。

项目成果

陽極形状によるホールスラスタ作動制御

通过阳极形状控制霍尔推进器运行

• 发表时间: 2009
• 作者: K.Segawa;T.Miyasaka;K.Asato;西川進栄;瀬川和秀
• 通讯作者: 瀬川和秀

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Experiment and Particle Simulation on Periodic Phenomena of a Hall Thruster

霍尔推进器周期性现象的实验与粒子模拟

• 发表时间: 2011
• 作者: K.Segawa;T.Miyasaka;K.Asato
• 通讯作者: K.Asato