火箭推进2023，Vol.49Issue(6)：73-81,9.
地面试验中的超燃冲压发动机特性分析
Analysis of scramjet characteristics in ground experiment
摘要
Abstract
Direct connection experiment and free flow experiment are the two most common experiments in the ground simulation experiment of scramjet engine.By comparing the concrete simulation of two kinds of experiments,it indicated that the operating parameters of the heater and incoming flow components meet the experiment requirements.On this basis,the performance of the same type of scramjet in these two kinds of experiments was analyzed,and combined with the numerical simulation analysis results to carry out the discussion.The results show that,in the two kinds of experiment,the flow pattern of the in-let is consistent.In terms of the working characteristics of the inlet and engine matching,the position of the ending shock wave in the free flow experiment is generally far behind,and its safety margin is higher than that in the direct connection experiment.The engine specific impulse ratings obtained from the two types of experiments are similar.The results show that the relative accuracy of engine performance can be obtained by the method based on the static pressure along the direct connecting experiment.关键词
超燃冲压发动机/直连式试验/自由射流试验/进气道内流特征/进-发匹配特性/发动机总体性能Key words
scramjet engine/direct connection experiment/free flow experiment/inlet flow pattern/in-let-engine matching/engine performance分类
航空航天引用本文复制引用
陈磊,李光熙,梁俊龙,王玉峰,杜泉,李江涵..地面试验中的超燃冲压发动机特性分析[J].火箭推进,2023,49(6):73-81,9.基金项目
国家自然科学基金(u1967203) （u1967203）
