脉冲爆震发动机倒旋流气动阀性能实验  

Experimental Investigation on Inversing-Rotating Aero-Valve in PDE

作　　者：宫继双[1] 范育新[1] 张义宁[2] 齐海帆[1] 程晓军[1] 王家骅[1] 张靖周[1] 

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016 [2]中国航天科工集团三十一研究所,北京100074

出　　处：《推进技术》2012年第4期657-664,共8页Journal of Propulsion Technology

基　　金：高超声速冲压发动机技术重点实验室项目资助(20110101007)

摘　　要：为了得到高性能的脉冲爆震发动机气动阀,根据以前研究者气动阀设计的经验,提出倒旋流气动阀设计思想,以此设计思想设计了五种结构不同的气动阀,并分别对五种气动阀性能进行了冷态和热态试验研究。试验结果表明:倒旋流数越大气动阀的单向性能越好;在进气道进口加装长1.5D(D为进气道进口直径)的直管,可获得最佳的气动阀单向性;综合考虑进气总压损失和气动阀单向性等因素,认为轴向倒旋流气动阀更适合PDE应用。通过轴向气动阀的热态试验结果表明:采用倒旋流设计的气动阀,可有效抑制前传压力约70%。In order to obtain high performance aero-valve of Pulse Detonation Engine （PDE） , a new type of aero-valve, called inversing-rotating aero-valve, was advanced by summarizing the experience of former designers. Five aero-valves with different structures were designed for following experiment. Results show that aero-valves with larger swirl number SN , which are fixed straight tubes （1.5D long） ahead of inlet, have more attractive one-way performance. The axial inversing-rotating aero-valve shows up more adaptability for PDE, while considering pressure loss and one-way performance. FuIthermore, the pressure of travelling waves to upstream through valve can be decreased about 70%.

关 键 词：脉冲爆震发动机 气动阀 倒旋流 单向性能 堵塞比 

分 类 号：V235.22[航空宇航科学与技术—航空宇航推进理论与工程]