多循环脉冲爆震发动机工作过程中的延迟时间研究  

Investigation of several delay times in operation process of multi-cycle pulse detonation engine

作　　者：张义宁[1] 王家骅[1] 刘鸿[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,南京210016

出　　处：《航空动力学报》2007年第2期228-232,共5页Journal of Aerospace Power

基　　金：国防基础预研项目(K1600060704)

摘　　要：为了提高两相脉冲爆震发动机(PDE)工作的协调性,运用离子传感器、动态压力传感器,对爆震燃烧的几个延迟时间以及供油电磁阀工作性能进行研究.研究表明:以汽油为燃料、空气为氧化剂的气动阀式PDE,点火延迟时间为3.0-4.5 ms,气动阀关闭滞后点火信号发出4.9-6.4 ms,供油电磁阀开、关延迟分别为2.4ms和3.4 ms左右.缓燃向爆震转捩时间为3.0-3.8 ms.PDE工作频率大于20 Hz时,电磁阀不能按设定时间工作.研究成果对PDE工作过程的协调及有效控制具有参考价值.In order to promote the operating coordination of a two-phase pulse detonation engine （PDE）, the delay time of detonation and operating performance of the solenoid valve were experimentally studied by using ion-sensors and pressure transducers of high-fre- quency response. The detonation tube is of 58ram inner diameter and 1 270 mm long. Liquid gasoline/air mixture is filled for the engine multi-cycle operations. According to the re- search,the mixture ignition delay is 3～4.5 ms , the aero-valve closing delay is 4.9～6.4ms, and the solenoid electric valve on/off delay time is 2.4 ms and 3.4 ms respectively. The transition time from deflagration to-detonation is about 3.0～3.8 ms. The solenoid electric valve cannot operate orderly when the engine operating frequency is higher than 20 Hz. These data obtained are helpful to coordinate PDE operation process.

关 键 词：航空 航天推进系统 脉冲爆震发动机(PED) 延迟时间 控制 气动阀 

分 类 号：V231.22[航空宇航科学与技术—航空宇航推进理论与工程]