| 引用本文: | 叶伟,徐万武,李平,等.四支板超声速引射器性能特性试验.[J].国防科技大学学报,2019,41(5):34-37.[点击复制] |
| YE Wei,XU Wanwu,LI Ping,et al.Experimental investigation on performance of four-strut supersonic ejector[J].Journal of National University of Defense Technology,2019,41(5):34-37[点击复制] |
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| 四支板超声速引射器性能特性试验 |
| 叶伟1,2, 徐万武1,2, 李平1,2, 张富强1,2, 戴训成1,2, 肖礼1,2 |
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(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)
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| 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。 |
| 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 |
| DOI：10.11887/j.cn.201905005 |
| 投稿日期：2018-06-07 |
| 基金项目: |
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| Experimental investigation on performance of four-strut supersonic ejector |
| YE Wei1,2, XU Wanwu1,2, LI Ping1,2, ZHANG Fuqiang1,2, DAI Xuncheng1,2, XIAO Li1,2 |
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(1. College of Aeronautics and Astronautics, National University of Defense Technology, Changsha 410073, China;2. Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| 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. |
| Keywords: four-strut supersonic ejector two dimensional nozzle start property load match property entrainment ratio pressure ratio |
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