一种双Ｓ形二元排气系统红外特性的模型实验  

Experiment on infrared signature of a model of serpentine two-dimensional exhaust system

作　　者：王丁[1] 吉洪湖[1] 卢浩浩[1] 王浩[1] 

机构地区：[1]南京航空航天大学能源与动力学院,南京210016

出　　处：《航空动力学报》2017年第12期2964-2971,共8页Journal of Aerospace Power

摘　　要：通过模型实验测量了一种双S形二元(2-D)喷管排气系统壁面压力和温度分布,以及分别在侧向、下方和上方探测面上的红外辐射强度分布,并与基准轴对称排气系统作了对比分析。实验结果表明:双S形二元喷管排气系统在上方探测面上,红外辐射强度比较大,最大值出现在10°探测角;相比基准轴对称排气系统,双S形二元排气喷管系统红外辐射强度在0°探测角方位平均降低了75.5%,在侧向、下方及上方探测面上90°探测角方位分别降低了57.6%、50.9%和17.3%。The pressure and temperature distributions on the surface of a model of serpentine two-dimensional（2-D）nozzle exhaust system were measured,and its infrared radiation（IR）intensity on the side,lower and upper detection planes were also measured;these results were compared with those of a relevant axisymmetric exhaust system.The results showed that,the radiation intensity of serpentine 2-D nozzle exhaust system on the upper detection plane was much higher than that on other two planes,with the maximum value at angle 10°;compared with axisymmetric exhaust system,the radiation intensity of serpentine2-D nozzle exhaust system reduced by 75.5% at angle 0°,and 57.6%,50.9% and 17.3% at angle 90° respectively on the side,lower and upper detection planes.

关 键 词：排气系统 双S形二元喷管 红外辐射 红外抑制 模型实验 

分 类 号：V231.1[航空宇航科学与技术—航空宇航推进理论与工程]