摘要
运用CFD/IR(computational fluid dynamics/infrared)数值模拟的方法,研究了直升机红外抑制器遮挡罩不同遮挡间距对红外辐射特性的影响.计算结果表明:相对未加装遮挡罩的红外抑制器,加装遮挡罩后红外辐射强度在水平面和铅垂面下方可以削弱90%以上;随着遮挡间距的增加,遮挡罩外露壁面的温度呈现单调降低的趋势;在研究的三种遮挡间距(5,10,35 mm)下,10 mm遮挡间距的红外抑制效果更为优越.
Based on numerical calculation of computational fluid dynamics/infrared(CFD/IR),the effects of the covering shelter fixed onto the curved mixing duct on the infrared radiation characteristics of the helicopter infrared radiation suppressor were revealed.The results show that: the infrared radiation intensity of the IR suppressor with covering shelter could be reduced more than 90% in the horizontal plane or the bottom of the vertical plane,if compared with that without covering shelter.With the increase of ...
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2009年第7期1493-1499,共7页
Journal of Aerospace Power
关键词
武装直升机
红外抑制器
遮挡罩
红外辐射
数值计算
armed helicopter
infrared suppressor
covering shelter
infrared radiation
numerical calculation
