预燃式等离子体射流点火器工作特性实验研究  

Experimental Investigation on Working Characteristics of Pre-Combustion Plasma Jet Ignitor

作　　者：蒋陆昀 于锦禄[1] 蒋永健 黄丹青 王思博 陈朝 胡雅骥[1] JIANG Lu-yun;YU Jin-lu;JIANG Yong-jian;HUANG Dan-qing;WANG Si-bo;CHEN Zhao;HU Ya-ji(College of Aeronautics Engineering,Air Force Engineering University,Xi'an 710038,China;Institute of ArmyAviation,Beijing 101121,China;95965 Armed Forces,Hengshui 253800,China)

机构地区：[1]空军工程大学航空工程学院,陕西西安710038 [2]陆航研究所,北京101121 [3]中国人民解放军95965部队,河北衡水253800

出　　处：《推进技术》2020年第12期2798-2807,共10页Journal of Propulsion Technology

基　　金：国家自然科学基金(51776223,91741112)。

摘　　要：为解决发动机点火包线小于飞行包线的实际问题,提升射流能量及射流稳定性,设计了一种预燃式等离子体射流点火器,实验研究了放电特性和射流特性。结果表明,预燃式等离子体射流点火器与空气等离子体射流点火器相比,在提升射流能量降低电源功率方面有着较大的优势,电流相同时通入甲烷在较大流量时可减小驱动电源功率,总流量为44L/min时,减幅可达14.99%;同时预燃式等离子体射流较空气等离子体射流稳定,且射流长度增加,扩大了点火面积,有利于点火。In order to solve the practical problem that the ignition envelope of the engine is narrower than the flight envelope and improve the jet energy and stability,a kind of pre-combustion plasma jet ignitor was designed.The discharge characteristics and jet characteristics were investigated experimentally.The results show that compared with the air plasma jet ignitor,the pre-combustion plasma jet ignitor has a greater advantage in improving the jet energy and reducing the power supply.When the current is the same,the driving power can be reduced when methane is introduced in a large flow rate.When the total flow rate is 44 L/min,the reduction can reach 14.99%.At the same time,the pre-combustion plasma jet is more stable than the air plasma jet,and the increase of jet length enlarges ignition area,which is beneficial to ignition.

关 键 词：等离子体 射流 点火器 放电 功率特性 射流特性 

分 类 号：V233.3[航空宇航科学与技术—航空宇航推进理论与工程]