论文部分内容阅读
为了评估不同燃料燃烧加热的空气污染对超燃冲压发动机性能的影响,重点研究了相同流动匹配条件下四种不同燃料燃烧加热的超燃冲压发动机性能(氢、甲烷、酒精和煤油)。对相同流动匹配条件下,地面模拟飞行Ma=6,高度25km的超燃冲压发动机流道性能采用数值模拟进行了评估,并将之与飞行条件下的发动机性能进行了对比分析。结果表明,不同加热方式对进气道升力和升阻比有显著影响(升力最大差异>8%,升阻比最大差异>6%),对超燃冲压发动机性能也有显著影响,比推最大差异97N·s/kg,燃烧效率最大差异11%。
In order to evaluate the effect of air pollution caused by different fuel combustion heating on the performance of scramjet, the performance of four different scramjet heated scramjet engines (hydrogen, methane, alcohol and kerosene) under the same flow matching conditions was mainly studied. Under the same flow matching condition, the runner performance of scramjet with Ma = 6 and 25km altitude was evaluated by numerical simulation and compared with the performance of the engine under flight conditions. The results show that different heating methods have significant effects on the lift and lift / drag ratio (maximum difference> 8%, maximum difference> 6%), and have significant influence on the performance of scramjet. The maximum difference 97N · s / kg, the maximum difference of combustion efficiency of 11%.