部分三代战机“迎角悬挂”现象的机理分析与仿真计算

参考有关风洞试验结果,探讨了部分三代战机"迎角悬挂"现象的机理,对比分析了不同机型"迎角悬挂"的特点。并以某型三代战机为例,根据其纵向气动和操稳特性曲线及飞控系统特性,利用时域动态响应的方法,仿真计算了该型机大迎角下"迎角悬挂"的有关现象,计算结果与其技术资料的叙述相符。分析与计算表明,大迎角下"迎角悬挂"现象,是由该类型三代战机气动布局决定的一个共性问题;同时,"迎角悬挂"现象的特点又与具体机型的气动布局特点以及重心位置等因素有关。

Phenomenal Mechanism Analysis and Simulation Computation for Some Third-generation Fighter “AOA Hang”

Reference result regarding wind tunnel test,discussing AOA Hang phenomenal mechanism of some third–generation fighter,analyzing aircraft’s characteristics of different types contrastively.And take the certain-type plane for example,simulation count about AOA Hang phenomenon through making use of means of response of time history according to longitudinal aerodynamic controllability and stability speciality curve and automatic flight control system characteristics,the result was consistent in technical materials.The analysis and computation indicates AOA Hang phenomenon under AOA belonged to a common problem which was decided by this type third–generation fighter aerodynamic layout;in the mean time,the characteristics of AOA Hang phenomenon related to the characteristics of concrete plane aerodynamic layout and the position of center of gravity location and so on.