中文摘要：

在极超音速的超音速冲压式喷气发动机的地面测试，高热含量的飞机飞行时所生之气流由经常烧烃燃料生产了包含水蒸汽和二氧化碳的沾染物。沾染物可以改变在地面测试和真实班机之间的燃料的点火特征。为了适当地在烃的点火特征上估计沾染物的影响，造成，在中国 RP-3 煤油的点火延期时间的水蒸汽和二氧化碳的效果在一个预热吃惊试管在反映的冲击波后面被学习。实验在 8001 500K 的一个更宽的温度范围上被进行，在 0.3 MPa， 0.5 和 1 的等价比率，和 20% 的氧集中的一个压力。点火延期时间从激动的激进分子的发作被决定哦和压力侧面的排放。点火延期时间为四个盒子被测量：( 1 )清洗气体，( 2 )气体在鼹鼠与10%和20%水蒸汽污染了，( 3 )气体在鼹鼠与10%二氧化碳污染了，并且( 4 )气体与10%水蒸汽和10%二氧化碳污染了，在鼹鼠的20%水蒸汽和10%二氧化碳。当时，结果证明二氧化碳在 1 300 K 下面在温度生产禁止的效果 = 0.5，而水蒸汽看起来加速点火，下面处理大约 1 000 K 的批评温度什么时候 = 0.5。当水蒸汽和二氧化碳一起存在时，次要的禁止效果在 = 被观察 0.5，当没有效果在 = 被发现时 1.0。结果也被讨论由考虑燃烧反应机制和燃料混合物的 thermophysics 性质初步。当前的大小在似空气的 O 在中国 RP-3 煤油的自动点火特征上表明水蒸汽和二氧化碳的损害效果 < 潜水艇 class= “ a-plus-plus ” > 2 集中。当数据从测试到真实飞行条件的地面被外推时，说明如此的效果是重要的。

英文摘要：

In ground tests of hypersonic scramjet, the highenthalpy airstream produced by burning hydrocarbon fuels often contains contaminants of water vapor and carbon dioxide. The contaminants may change the ignition characteristics of fuels between ground tests and real flights. In order to properly assess the influence of the contaminants on ignition characteristics of hydrocarbon fuels, the effect of water vapor and carbon dioxide on the ignition delay times of China RP-3 kerosene was studied behind reflected shock waves in a preheated shock tube. Experiments were conducted over a wider temperature range of 800-1 500 K, at a pressure of 0.3 MPa, equivalence ratios of 0.5 and 1, and oxygen concentration of 20%. Ignition delay times were determined from the onset of the excited radical OH emission together with the pressure profile. Ignition delay times were measured for four cases： （1） clean gas, （2） gas vitiated with 10% and 20% water vapor in mole, （3） gas vitiated with 10% carbon dioxide in mole, and （4） gas vitiated with 10% water vapor and 10% carbon dioxide, 20% water vapor and 10% carbon dioxide in mole. The results show that carbon dioxide produces an inhibiting effect at temperatures below 1 300 K when Ф = 0.5, whereas water vapor appears to accelerate the ignition process below a critical temperature of about 1 000 K when Ф = 0.5. When both water vapor and carbon dioxide exist together, a minor inhibiting effect is observed at Ф = 0.5, while no effect is found at Ф = 1.0. The results are also discussed preliminary by considering both the combustion reaction mechanism and the thermophysics properties of the fuel mixtures. The current measurements demonstrate vitiation effects of water vapor and carbon dioxide on the autoignition characteristics of China RP-3 kerosene at air-like O2 concentration. It is important to account for such effects when data are extrapolated from ground testing to real flight conditions.