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

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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

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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