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요약정보
阴极位置对大功率霍尔推力器点火过程影响的研究 / Influence of Cathode Position on Ignition Process of High-Power Hall Thrusters
Resource Type
Academic Journal
Authors
李文博
;
廖岩
;
成渭民
;
孙建宁
;
高前
;
王尚民
;
魏立秋
;
于达仁
;
LI Wenbo
;
LIAO Yan
;
CHENG Weimin
;
SUN Jianning
;
GAO Qian
;
WANG Shangmin
;
WEI Liqiu
;
Yu Daren
Source
载人航天 / MANNED SPACEFLIGHT
. 27(6):696-702
Subject
大功率霍尔推力器;点火启动;P IC模拟;阴极位置
Language
Chinese
ISSN
1674-5825
Online Access
Find it @ DONGA
초록
为研究不同阴极位置对大功率霍尔推力器点火过程的影响,测量了一台10 kW霍尔推力器不同阴极位置下的点火冲击电流,采用P IC数值模型计算了不同阴极位置下推力器点火过程中离子密度变化特性.结果表明:与阴极外置结构相比,尽管阴极中置结构下点火过程初始阶段的阳极电流增长速率较慢,冲击电流峰值出现较晚,点火过程演化速率较慢,但点火冲击电流峰值更小,推力器点火成功后向稳态放电转换过程中低频振荡放电电流的平均值和峰值较小,且推力器点火过程中羽流的周向对称性更加良好,造成这些差异的主要原因是由于阴极所处的位置不同导致其初始发射电子所处的磁场环境不同.
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