Adopting directional warhead is one of main ways to improve the operational effectiveness. For the high power, designing the main parameters of the gimbaled warhead killing device is necessary. The static initial velocity and static spray angle of fragments are confirmed according to the operation requirement of anti-aircraft missile. The charge to metal ratio (mc/mt) of cylindrical front-fragments warhead is calculated by using Gurney formulas. Different cone angles of fragment beam are achieved by choosing different initiation modes, and the cone angles are ensured by concave fragment-layer design. The preliminary radius of the layer is acquired, which is the key parameter of the killing device. The calculation results about fragment-field density and fragment residual velocity indicate that the maximum distances at which the fragment-field density is enough are respective 71.0m and 23. 2 m when the cone angle are 10° and 30° under dynamic explosion condition. The two modes of the warhead can be adopted at different operational distance, and the warhead has a higher capability to damage TBM.%采用定向战斗部是提高防空导弹作战效能的主要途径之一,为提高瞄准式定向战斗部的杀伤威力,需要对战斗部杀伤装置的主要参数进行设计与优化.根据防空导弹作战需求对瞄准式战斗部的破片静态初速和静态破片束锥角进行了设计.运用格尼公式计算出了圆柱形前置破片结构的装药-破片质量比mc/mf.通过选择起爆方式获得不同破片束锥角,并采用内凹式破片层设计以保证该角度的实现,计算得出了所需的内凹式破片层曲率半径.破片场密度与破片存速计算结果表明:在静态爆炸条件下,破片束锥角为10.和30.时,破片场密度满足毁伤要求的最远距离,分别为71.0m和23.2 m,战斗部的两种起爆模式适合在不同的作战距离上使用,对战术弹道导弹目标具备较强的毁伤能力.
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