Abstract:

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 require- ment of anti-aircraft missile. The charge to metal ratio (mc / mf) 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 prelim- inary radius of the layer is acquired, which is the key parameter of the killing device. The calculation re- sults about fragment-field density and fragment residual velocity indicate that the maximum distances at which the fragment-field density is enough are respective 71. 0 m and 23. 2 m when the cone angle are 10毅 and 30毅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.

Key words: ordnance science and technology, gimbaled warhead, cone angle of fragment beam, charge to metal ratio, structural design