Experimental investigation on de-icing by an array of impact rod-type plasma synthetic jets  

作　　者：刘雪城 梁华 宗豪华 谢理科 苏志 Xuecheng LIU;Hua LIANG;Haohua ZONG;Like XIE;Zhi SU(Science and Technology on Plasma Dynamics Laboratory,Air Force Engineering University,Xi’an 710038,People’s Republic of China;School of Mechanical Engineering,Xi’an Jiaotong University,Xi’an 710049,People’s Republic of China)

机构地区：[1]Science and Technology on Plasma Dynamics Laboratory,Air Force Engineering University,Xi’an 710038,People’s Republic of China [2]School of Mechanical Engineering,Xi’an Jiaotong University,Xi’an 710049,People’s Republic of China

出　　处：《Plasma Science and Technology》2023年第3期138-149,共12页等离子体科学和技术（英文版）

基　　金：financially supported by National Natural Science Foundation of China(No.12002384);National Key Laboratory Foundation of China(No.614220220200107);National Science and Technology Major Project of China(No.J2019-II-0014-0035);Academician Workstation F0undation of the Green Aerotechnics Research Institute of Chongqing Jiaotong University(No.GATRI2020C06003)。

摘　　要：Since flight accidents due to aircraft icing occur from time to time,this paper proposes an array of impact rod-type plasma synthetic jet de-icing methods for aircraft icing problems.The impact rod-type plasma synthetic jet actuator(PSJA)is based on the traditional PSJA with an additional impact rod structure for better de-icing in the flight environment.In this work,we first optimize the ice-breaking performance of a single-impact rod-type PSJA,and then conduct an array of impact rod-type plasma synthetic jet ice-breaking experiments to investigate the relationship between crack expansion and discharge energy,ice thickness and group spacing.The results show that the impact force and impulse of a single-impact rod-type PSJA are proportional to the discharge energy,and there exists a threshold energy Qmin for a single actuator to break the ice,which is proportional to the ice thickness.Only when the discharge energy reaches above Qmin can the ice layer produce cracks,and at the same time,the maximum radial crack length produced during the ice-breaking process is proportional to the discharge energy.When the ice is broken by an array of impact rod PSJAs,the discharge energy and group spacing together determine whether the crack can be extended to the middle region of the actuator.When the group spacing is certain,increasing the energy can increase the intersection of cracks in the middle region,and the ice-fragmentation degree is increased and the ice-breaking effect is better.At the same time,the energy estimation method of ice breaking by an array of impact rod-type PSJAs is proposed according to the law when a single actuator is breaking ice.

关 键 词：plasma de-icing plasma synthesis jet force measurement high-speed photography ice cracks 

分 类 号：V244.15[航空宇航科学与技术—飞行器设计] O539[理学—等离子体物理]