Volume 28 Issue 7
Jul.  2013
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DENG Wei-xin, LE Jia-ling, YANG Shun-hua, TIAN Ye, ZHANG Wan-zhou, XU Ming-heng. Effect of fueling scheme on scramjet combustion performance[J]. Journal of Aerospace Power, 2013, 28(7): 1449-1457.
Citation: DENG Wei-xin, LE Jia-ling, YANG Shun-hua, TIAN Ye, ZHANG Wan-zhou, XU Ming-heng. Effect of fueling scheme on scramjet combustion performance[J]. Journal of Aerospace Power, 2013, 28(7): 1449-1457.

Effect of fueling scheme on scramjet combustion performance

  • Received Date: 2012-11-26
  • Publish Date: 2013-07-28
  • Effect of fueling scheme on scramjet combustion performance was investigated based on pulse wind-tunnel direct connected experiment platform. Both pressure measurement and high speed videos were employed.The time evolution of flame with ethylene injected at different single injectors was demonstrated by high speed videos.Under the limits of producing effective thrust and avoiding inlet un-start,the first and second injectors' least and largest fuel equivalence ratios(ER) for combustion were obtained from injecting characteristics experiments.The coupling of the first and second injectors with others was studied.With these initiatory results gained above,different fueling schemes for best combustion performance were investigated under three indexes:isolator undisturbed length,combustor inner thrust and fuel specific impulse.The optimum values for these three indexes were 149.6mm,1622.3N and 1354.0s separately.

     

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