四支板超声速引射器性能特性试验  

Experimental investigation on performance of four-strut supersonic ejector

作　　者：叶伟[1,2] 徐万武[1,2] 李平 张富强 戴训成 肖礼 YE Wei;XU Wanwu;LI Ping;ZHANG Fuqiang;DAI Xuncheng;XIAO Li(College of Aeronautics and Astronautics,National University of Defense Technology,Changsha 410073,China;Science and Technology on Scramjet Laboratory,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学空天科学学院,湖南长沙410073 [2]国防科技大学高超声速冲压发动机技术重点实验室,湖南长沙410073

出　　处：《国防科技大学学报》2019年第5期34-37,共4页Journal of National University of Defense Technology

摘　　要：对二维喷管构型的四支板超声速引射器进行冷流试验,分析启动、负载匹配方面的性能特性。试验结果表明:启动特性方面,四支板超声速引射系统的盲腔压力低于3 kPa,引射器入口腔压的迟滞压力比启动压力低15.9%。负载匹配特性方面,四支板引射器在小引射系数、大增压比状态下具有十分明显的优势,当引射系数为0.04时,增压比为11.21;当引射系数为0.10时,增压比为7.0。因此,二维喷管构型的多支板超声速引射器具有良好的启动、负载匹配性能,工程应用潜力较大。A four-strut supersonic ejector with two-dimensional nozzle configuration was tested in cold flow,the performance of start and load match properties were analyzed.The experiment results indicate that the static pressure of suction chamber in four-strut supersonic ejector is less than 3 kPa and the pressure of ejector inlet chamber in delay status is 15.9%lower than that in start status.In the aspect of load match property,the four-strut ejector with small entrainment ratio and big pressure ratio has a quite obvious advantage.When the entrainment ratio is 0.04,the corresponding pressure ratio is 11.21;when the entrainment ratio is 0.10,the corresponding pressure ratio is 11.21.Therefore,the multi-strut supersonic ejector with two-dimensional nozzle configuration has good performance of start and load match properties,thus possessing considerable potential value in engineering.

关 键 词：四支板超声速引射器 二维喷管 启动特性 负载匹配特性 引射系数 增压比 

分 类 号：V236[航空宇航科学与技术—航空宇航推进理论与工程]