In order to improve the infrared stealth and maneuverability of aircraft exhaust system,a multi-axis cascade rotary vertical take-off and landing nozzle was developed and proposed,and the infrared radiation characteristics of nozzles in conventional cruise,vertical takeoff and landing and intermediate form S stealth modes were studied parameterized by using Malkmus statistical narrow band model and the reverse Monte Carlo method(RMCM).The results showed that compared to the conventional cruise mode nozzle,the infrared radiation intensity of the vertical takeoff and landing mode nozzle was reduced by a maximum of 23％and the S stealth mode nozzle by a maximum of 47％.And the relative angles of the cabins had a significant effect on the infrared radiation characteristics of the S stealth mode nozzle,and the relative angles of the cabins near the exit had little effect on the infrared radiation characteristics of the nozzle in vertical takeoff and landing mode.
关键词
排气系统/垂直起降喷管/Malkmus统计窄谱带模型/反向蒙特卡洛/红外辐射
Key words
exhaust system/vertical take-off and landing nozzle/Malkmus statistical narrow band model/RMCM/infrared radiation
维普
万方数据