针式铟场发射电推力器的研制及实验特性 *

推进技术 ›› 2018, Vol. 39 ›› Issue (4): 955-960.

• 电推进和其它推进 • 上一篇

针式铟场发射电推力器的研制及实验特性 *

郭登帅¹,康小明¹,刘欣宇¹,杭观荣²,贺伟国¹,余水淋²,薛伟华²,李彦达²

上海交通大学机械与动力工程学院，上海 200240,上海交通大学机械与动力工程学院，上海 200240,上海交通大学机械与动力工程学院，上海 200240,上海空间推进研究所，上海 201112,上海交通大学机械与动力工程学院，上海 200240,上海空间推进研究所，上海 201112,上海空间推进研究所，上海 201112,上海空间推进研究所，上海 201112

发布日期:2021-08-15
作者简介:郭登帅，男，博士生，研究领域为场发射电推进技术与理论。
基金资助:
国家自然科学基金(51675341)；中国科学院微小卫星重点实验室开放课题(KFKT13SYS4)。

Development and Experimental Characteristics of Indium Needle-Type Field Emission Electric Propulsion Thruster

School of Mechanical Engineering，Shanghai Jiaotong University，Shanghai 200240，China,School of Mechanical Engineering，Shanghai Jiaotong University，Shanghai 200240，China,School of Mechanical Engineering，Shanghai Jiaotong University，Shanghai 200240，China,Shanghai Institute of Space Propulsion，Shanghai 201112，China,School of Mechanical Engineering，Shanghai Jiaotong University，Shanghai 200240，China,Shanghai Institute of Space Propulsion，Shanghai 201112，China,Shanghai Institute of Space Propulsion，Shanghai 201112，China and Shanghai Institute of Space Propulsion，Shanghai 201112，China

Published:2021-08-15

摘要/Abstract

摘要： 为了研制针式铟场发射电推力器实验样机，采用微细电化学腐蚀法制备了场发射电推力器的核心部件发射针，并对发射针进行了表面粗化以促进推进剂的输运，研究了真空环境中发射针的浸润方法，实现了推力器的点火，并测得了不同针尖尺寸的发射针的I-V特性曲线和推力值。实验结果表明，发射针针尖半径决定了点火起始电压的大小，针尖半径越小，点火起始电压越低；推力器样机有连续的推力输出，最大推力可达30μN。

关键词: 场发射电推力器；发射针；粗化；浸润

Abstract: To develop an indium needle-type FEEP thruster， the needle tip of the FEEP thruster was fabricated by electrochemical etching and was roughened to facilitate the flow of the propellant indium. The needle was wetted under vacuum condition. The developed experimental prototype of In-FEEP was ignited successfully. The characteristics of the thruster including I-V curves of tips with different radii and its thrust were obtained. The experimental results showed that the threshold voltage is dependent on the tip radius that the smaller the tip radius， the lower the threshold voltage is. The experimental prototype could provide continuous thrust output which is 30μN at maximum.

Key words: FEEP；Needle；Roughening；Wetting

郭登帅,康小明,刘欣宇,杭观荣,贺伟国,余水淋,薛伟华,李彦达. 针式铟场发射电推力器的研制及实验特性 *[J]. 推进技术, 2018, 39(4): 955-960.

GUO Deng-shuai¹,KANG Xiao-ming¹,LIU Xin-yu¹,HANG Guan-rong²,HE Wei-guo¹,YU Shui-lin²,XUE Wei-hua²,LI Yan-da². Development and Experimental Characteristics of Indium Needle-Type Field Emission Electric Propulsion Thruster[J]. Journal of Propulsion Technology, 2018, 39(4): 955-960.

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针式铟场发射电推力器的研制及实验特性 *

Development and Experimental Characteristics of Indium Needle-Type Field Emission Electric Propulsion Thruster

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