Characterization of an ionic liquid electrospray thruster with a porous ceramic emitter

作     者：陈冲 陈茂林 周浩浩 Chong CHEN;Maolin CHEN;Haohao ZHOU

作者机构：CombustionInternal Flow and Thermal-Structure LaboratoryNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2020年第22卷第9期

页      面：66-74页

核心收录：

学科分类：080703[工学-动力机械及工程] 08[工学] 082502[工学-航空宇航推进理论与工程] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0825[工学-航空宇航科学与技术] 0702[理学-物理学] 

主　　题：electrospray thruster time-of-flight(TOF) retarding potential analysis(RPA) 

摘      要：An ionic liquid(IL)electrospray thruster was developed for application in micro-nano satellites or gravitational wave *** thruster employed a porous ceramic emitter with seven emitter strips located on its emission *** any liquid-supply device,IL was delivered through porous media to emitter strips via capillary *** emission sites then formed at the tip of each strip.A charged beam of up to 350μA(with a current density of 540μA cm^(-2))was stably produced in the negative ***,in the positive mode,a corona was observed which could prevent the thruster from emitting larger current.A time-of-flight mass spectrometer with significantly improved signal-to-noise ratio was built,which was used to obtain the mass distribution of the beam of the thruster.A retarding potential analysis was also *** test results showed that the thruster worked in the pure-ion regime,and delivered a maximum thrust of 67.1μN with specific impulses of 3952 s and 3117 s in the positive and negative modes,respectively.