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兵工学报 ›› 2016, Vol. 37 ›› Issue (9): 1655-1661.doi: 10.3969/j.issn.1000-1093.2016.09.015

• 论文 • 上一篇    下一篇

超燃冲压发动机喷焰辐射试验研究

曾学军1, 石安华2, 韩冬2, 李向东1, 胡华雨2, 张军2   

  1. (1.中国空气动力研究与发展中心 高超声速冲压发动机技术重点实验室 绵阳分部, 四川 绵阳 621000;2.中国空气动力研究与发展中心 超高速空气动力研究所, 四川 绵阳 621000)
  • 收稿日期:2016-01-19 修回日期:2016-01-19 上线日期:2016-11-04
  • 通讯作者: 曾学军 E-mail:ahtrc@cardc.cn
  • 作者简介:曾学军(1962—)男研究员博士生导师
  • 基金资助:
    装备预先研究基金项目(9140A03030111KG903)

Experimental Research on Exhaust Plume Radiation of Scramjet

ZENG Xue-jun1, SHI An-hua 2, HAN Dong2, LI Xiang-dong1, HU Hua-yu2, ZHANG Jun2   

  1. (1.Mianyang Division, Science and Technology on Scramjet Laboratory, China Aerodynamics Research and Development Center,Mianyang 621000, Sichuan, China;2.Hypervelocity Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, Sichuan, China)
  • Received:2016-01-19 Revised:2016-01-19 Online:2016-11-04
  • Contact: ZENG Xue-jun E-mail:ahtrc@cardc.cn

摘要: 介绍了超燃冲压发动机喷焰辐射特性试验与测量方法,在燃料为航空煤油、来流马赫数为6、当量油气比为0.8的试验状态下,获得了长1 m量级超燃冲压发动机喷焰辐射强度和光谱。喷焰辐射强度在发动机喷口附近随喷射距离缓慢下降;辐射强度显现出的高频震荡、低频稳定特性,反映出燃料燃烧过程的微观脉动性和宏观稳定性。根据喷焰光谱,喷焰辐射能量集中在波长4.364 3 μm附近,主要辐射源为CO2.

关键词: 航空、航天科学技术基础学科, 超燃冲压发动机, 喷焰, 辐射强度, 光谱

Abstract: The radiation measurement methods and test of scramjet exhaust plume are introduced. The exhaust plume radiation intensity and spectrum from 1m scale level scramjet are obtained for the aerial kerosene fuel under the test state of Mach number 6 with equivalent fuel-to-air ratio of 0.8. The radiation intensities of near ultraviolet band, near ultraviolet to visible light band, and mid-infrared band are reduced slowly along the exhaust direction near the exit of the scramjet. The high frequency instability and low frequency stability of radiation intensity reflect the micro instability and macro stability of combustion. According to the spectrum of plume, the radiation energy concentrates around the band of 4.364 3 μm. The main radiation component is identified to be CO2.

Key words: basic disciplines of aerospace science and technology, scramjet, exhaust plume, radiation intensity, spectrum

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