JAS39 “鹰狮”多用途战斗机是由瑞典萨伯公司研制的,它不但可以执行空战,而且还可在对地攻击中执行空中侦察任务。“鹰狮”多用途战斗机的机体广泛采用了复合材料,可以适应所有高度上的超音速飞行。“鹰狮”的机翼为切尖三角形中单冀,后掠角45°,后缘为两段式升降副翼;前翼为全动式梯形后掠翼; JAS39 “Griin” multi-purpose fighter was developed by the Swedish company Saab, it can not only perform air combat, but also in the ground attack air reconnaissance mission. The “Lioness” multipurpose fighter aircraft body widely used composite materials, can adapt to all the hypersonic flight. The Eagle's wing is a sharp triangle in the single Ji, sweepback angle of 45 °, the trailing edge of the two-stage ascending aileron; front wing is fully movable trapezoidal swept wing;