类X-51A飞行器被动巡航状态红外辐射特性研究

Study on Infrared Radiation Characteristics of X-51A Type Hypersonic Vehicle Under Cruising State

高超声速飞行器经受严重的气动加热效应,蒙皮具有较高的温度,具有强烈的红外光辐射效应,可作为目标探测与识别的辐射源。以类X-51A高超声速飞行器为研究对象,采用反向建模技术获得了目标乘波体外形、结构尺寸和冲压发动机几何参数。在此基础上,计算了飞行器巡航状态下的流场参数及蒙皮温度,分析了类X51-A飞行器在典型飞行工况下不同探测方向的红外辐射强度分布,可为类X-51A乘波体飞行器的光辐射以及目标探测、识别和攻防等技术提供支撑。

Hypersonic vehicle suffers from severe aerodynamic heating effect,and the temperature of some zones of its skin is pretty high.The intense infrared radiation signature can be used as the radiation source of target detection and recognition.The X-51A type hypersonic vehicle was taken as the research object,and the shape,structure size and ramjet geometric parameters of the waverider were obtained by using the reverse modeling technology.On this basis,the flow field parameters and skin temperature of the aircraft in cruise state were calculated,and the infrared radiation intensity distribution of the X-51A type waverider in different detection directions under typical flight conditions was analyzed,which provides support for understanding the optical radiation characteristics of the X-51A type waverider and the fields of target detection,recognition,attack and defense.