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.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2014年第2期259-267,共9页
Journal of Aerospace Power
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
fighter
infrared integral radiant intensity
infrared stealth effect
low emissivity materials
detection range
