为了对羽流激波中金属光谱特性进行研究 ,用煤油 氧火焰气体模拟煤油 氧发动机的羽流 ,以二茂铁溶于煤油模拟发动机材料铁的磨损 ,给出不同混合比下铁在火焰中辐射光谱的实验与仿真结果。实验光谱数据随铁的浓度不同而变化 ,理论光谱与实验结果吻合较好 ,验证了羽流中金属原子辐射光谱的仿真程序。为基于羽流光谱分析的发动机故障诊断研究奠定了实验与理论基础 In order to study the spectral characteristics of metal in plume shock wave, the kerosene oxygen flame gas is used to simulate the plume of kerosene oxygen engine, and the ferric iron is dissolved in kerosene to simulate the wear of engine iron. The iron content in iron Experimental and simulation results of radiation spectra. The experimental spectrum changes with the concentration of iron, the theoretical spectra agree well with the experimental results, validating the simulation program of the metal atom emission spectrum in plume. It laid the experimental and theoretical foundation for the research of engine fault diagnosis based on plume spectrum analysis