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首页> 外文期刊>Chinese journal of aeronautics >Experimental Study on Effects of Fuel Injection on Scramjet Combustor Performance
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Experimental Study on Effects of Fuel Injection on Scramjet Combustor Performance

机译：燃油喷射对超燃冲压燃烧器性能影响的实验研究

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摘要

In order to investigate the effects of fuel injection distribution on the scramjet combustor performance, there are conducted three sets of test on a hydrocarbon fueled direct-connect scramjet test facility. The results of Test A, whose fuel injection is carried out with injectors located on the top-wall and the bottom-wall, show that the fuel injection with an appropriate close-front and centralized distribution would be of much help to optimize combustor performances. The results of Test B, whose fuel injection is performed at the optimal injection locations found in Test A, with a given equivalence ratio and different injection proportions for each injector, show that this injection mode is of little benefit to improve combustor performances. The results of Test C with a circumferential fuel injection distribution displaies the possibility of ameliorating combustor performance. By analyzing the effects of injection location parameters on combustor performances on the base of the data of Test C, it is clear that the injector location has strong coupled influences on combustor performances. In addition, an inner-force synthesis specific impulse is used to reduce the errors caused by the disturbance of fuel supply and working state of air heater while assessing combustor performances.
机译：为了研究燃料喷射分布对超燃冲压燃烧器性能的影响，在以碳氢化合物为燃料的直接连接超燃冲压试验设备上进行了三组测试。测试A的结果是使用位于顶壁和底壁上的喷油器进行燃油喷射，结果表明，采用适当的近端和集中分布的燃油喷射将有助于优化燃烧器性能。测试B的结果是在给定的比率和每个喷射器不同的喷射比例的情况下，在测试A的最佳喷射位置进行燃料喷射的，结果表明，这种喷射方式对改善燃烧器性能没有多大帮助。具有周向燃料喷射分布的测试C的结果消除了改善燃烧器性能的可能性。通过基于测试C的数据分析喷射位置参数对燃烧器性能的影响，很明显，喷射器位置对燃烧器性能具有强烈的耦合影响。另外，在评估燃烧器性能的同时，使用内力综合特定脉冲来减少由燃料供应和空气加热器的工作状态的扰动引起的误差。

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