战斗机8～14μm波段红外特征及低发射率材料隐身效果  

Fighter's infrared characteristics between 8 and 14μm and infrared stealth effect of low emissivity materials

作　　者：刘健[1] 宫禹[2] 吉洪湖[1] 

机构地区：[1]南京航空航天大学能源与动力学院,南京210016 [2]中国航空工业集团公司沈阳飞机设计研究所总体气动部,沈阳110035

出　　处：《航空动力学报》2014年第2期259-267,共9页Journal of Aerospace Power

摘　　要：对某典型战斗机在8～14μm波段范围内的红外积分辐射强度空间分布进行了数值计算，考虑了大气透过率的影响，计算了使用红外搜索跟踪系统对战斗机进行探测时的探测距离，并分析了该战斗机采用低发射率材料后的红外隐身效果．战斗机的流场采用商用Fluent软件进行计算，红外辐射特征及探测距离采用自开发的NUAA—IRSE软件进行计算．计算结果表明：在8～14μm波段，周向角一定时，俯仰角越大红外积分辐射强度越大；俯仰角一定时，周向角越大红外积分辐射强度越大．采用低发射率材料后，战斗机在整个空间方向范围内，其红外积分辐射强度降低，战斗机红外隐身效果提高．The infrared integral radiant intensity of a typical fighter within the waveband between 8μm and 14μm and its detection range detected by infrared search/tracking system was calculated by taking into account the influence of the atmospheric transmissivity. The infrared stealth effect of the fighter with use of low emissivity materials was also analyzed. The flow field was calculated by Flunt software, while the infrared radiation characteristics and detection range were simulated by using self-developed software NUAA-IRSE. The re- sults show that the infrared integral radiant intensity increases with the increasing of circum- ference angle and pitch angle. When applying low emissivity materials, the infrared integral radiant intensity decreases in all directions, leading to an improved infrared stealth effect.

关 键 词：战斗机 红外积分辐射强度 红外隐身效果 低发射率材料 探测距离 

分 类 号：V235.1[航空宇航科学与技术—航空宇航推进理论与工程]