| 收扩喷管加小突片对尾喷流红外辐射的影响 |
| |
| 引用本文： | 黄勇,郭志辉,魏福清,吴寿生.收扩喷管加小突片对尾喷流红外辐射的影响[J].航空动力学报,2001,16(1):19-22. |
| |
| 作者姓名： | 黄勇 郭志辉 魏福清 吴寿生 |
| |
| 作者单位： | 北京航空航天大学动力系,北京100083 |
| |
| 摘 要： | 针对收扩喷管,在高温(约640℃)、高速(超音速)流动状态下,实验研究了加装小突片后对飞机发动机尾喷流红外辐射的抑制效果,并探讨了小突片堵塞比、小突片后倾角度等因素对红外辐射抑制特性的影响。结果表明,小突片对热射流的红外辐射具有明显的抑制作用,不仅使热射流的核心区长度大为缩短,而且使热射流的总体红外辐射信号大幅度下降(在本文实验范围内,最大可下降约57%)。
|
| 关 键 词： | 收扩喷管 小突片 红外辐射 |
| 文章编号： | 1000-8055(2001)01-0019-04 |
| 收稿时间： | 1999/3/17 0:00:00 |
| 修稿时间： | 1999年3月17日 |
Effect of Tabs Fixed on a Convergent-Divergent Nozzle on Infrared Radiation of Exhausting Jet |
| |
| HUANG Yong,GUO Zhi-hui,WEI Fu-qing and WU Shou-sheng.Effect of Tabs Fixed on a Convergent-Divergent Nozzle on Infrared Radiation of Exhausting Jet[J].Journal of Aerospace Power,2001,16(1):19-22. |
| |
| Authors: | HUANG Yong GUO Zhi-hui WEI Fu-qing and WU Shou-sheng |
| |
| Institution: | 4th Dept., Beijing University of Aeronautics and Astronautics, Beijing100083, China |
| |
| Abstract: | The effect of tabs fixed on a convergent-divergent nozzle on theinfrared radiation of the exhausting high speed (subsonic and supersonic) hot (about 640℃) jet was investigated,and the influence of tab block ratio and inclined angle on the suppression of infrared radiation was studied.The results show that tabs can cut down a good lot of hot jet core length and suppress the infrared radiation up to 57% from the hot jet.The increase in tab block ratio of 1% decreases the infrared radiation intensity of the whole hot exhausting gas by about 5.5% in average,and the increase in tab inclined angle by 1 degree can suppress the infrared radiation intensity of the whole hot exhausting gas by about 0.21% in average in the test conditions. |
| |
| Keywords: | convergent-divergent nozzle small tabs infrared radiation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
| 点击此处可从《航空动力学报》下载免费的PDF全文 |
|
