Preliminary study of the electrospray DPE peculiarities from the liquid surface in the presence of the CSWs  

作　　者：贺伟国 霍卫杰 韩罗峰 朱康武 王锋 王泽坤 Weiguo HE;Weijie HUO;Luofeng HAN;Kangwu ZHU;Feng WANG;Zekun WANG(School of Mechatronic Engineering and Automation,Shanghai University,Shanghai 200444,People’s Republic of China;Shanghai Aerospace Electronic Technology Institute,Shanghai 201109,People’s Republic of China;Shanghai Aerospace Control Technology Institute,Shanghai 201109,People’s Republic of China)

机构地区：[1]School of Mechatronic Engineering and Automation,Shanghai University,Shanghai 200444,People’s Republic of China [2]Shanghai Aerospace Electronic Technology Institute,Shanghai 201109,People’s Republic of China [3]Shanghai Aerospace Control Technology Institute,Shanghai 201109,People’s Republic of China

出　　处：《Plasma Science and Technology》2024年第5期110-120,共11页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(No.12102099);the National Key R&D Program of China(No.2021YFC2202700);the Outstanding Academic Leader Project of Shanghai(Youth)(No.23XD1421700),respectively。

摘　　要：The Ultrasonic Electric Propulsion(UEP)system is a cutting-edge propulsion technology that is mostly used on platforms for small satellites(less than 10 kg).The characteristics of droplet partial emissions(DPEs)in the UEP system are investigated using a high-speed imaging technique(an ultra-high speed camera(NAC HX-6)and a long-distance microscope)in this work.The experiments demonstrate that there are a few partial emission modes,including left-side emission,double-side emission,and right-side emission,that are present in the droplet emission process of the UEP system.These modes are primarily caused by the partial formation of capillary standing waves(CSWs)on the emission surface of the ultrasonic nozzle.The emission rate for single-and double-sided emissions varies at different times,indicating that there are different CSWs engaged in droplet emission due to variations in the liquid film thickness and charge state of the liquid cones.Additionally,as the droplets emit continuously,a raised area on the emission surface appears,with several droplets emitting there as a result of charge accumulation.Additionally,photos of the CSWs with emitting droplets are obtained,which highlights the CSWs'distinctive wave morphology.

关 键 词：ultrasonic electric propulsion system MICROSATELLITE high-speed imaging technique droplet partial emissions electric field 

分 类 号：V439.4[航空宇航科学与技术—航空宇航推进理论与工程]