垂直起降喷管的红外辐射特性数值分析  

Numerical simulation on infrared radiation characteristics of vertical take-off and landing nozzle

作　　者：赵海宇 王伟 宋经远 王青山 ZHAO Haiyu;WANG Wei;SONG Jingyuan;WANG Qingshan(School of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China;Shenyang Engine Research Institute,Aero Engine Corporation of China,Shenyang 110015,China)

机构地区：[1]中南大学机电工程学院,长沙410083 [2]中国航发沈阳发动机研究所,沈阳110015

出　　处：《航空动力学报》2024年第11期300-308,共9页Journal of Aerospace Power

摘　　要：为提高飞机排气系统的红外隐身性以及机动性,发展和提出一种多轴级联旋转式垂直起降喷管,并运用Malkmus统计窄谱带模型和反向蒙特卡洛法(RMCM)对常规巡航、垂直起降和中间形态S隐身模式下喷管红外辐射特性进行参数化研究。结果表明:相比于常规巡航模式喷管,垂直起降模式喷管红外辐射强度最大降低23%,S隐身模式喷管最大降低47%;舱段相对转角变化规律对S隐身模式喷管红外辐射特性影响显著,此外靠近出口的舱段相对转角变化规律对垂直起降模式喷管红外辐射特性影响较小。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 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]