Eccentric Detonated Directional Warhead Fragments Distribution And Damage Efficiency Study

This paper studies the distribution of fragment velocity and density of eccentric initiation aimed warhead combined with experiment and theoretic analysis. B-52 airplane is attacked by which the effect of each intersection parameter on kill probability can be obtained. Fuse-warhead coordination efficiency is researched for further by which the best delay interval can be obtained.The results indicate that the fragment's velocity comes to maximum in the opposite direction of initiation point where the fragment's destiny is the lowest and the fragment's velocity comes to minimum in the same direction of initiation point where the fragment's destiny is the highest. The maximum velocity's enhancement comes to 8.25% while destiny falls for 2.02% comparing with center initiation mode. The results show that miss distance and intersection angle affect greatly while off-target azimuth and V-T angle affect rarely on kill probability. The best fuse delay time extends with the increase of miss distance and intersection angle while off-target angle and V-T angle are ensured. The fuse delay interval is longer and kill probability is about 10% higher when aimed warhead is adopted compared with regular warhead. The fuse delay interval should be at 20ms-35ms to achieve largest fuse-warhead coordination efficiency on the condition of missile velocity 800m/s, target velocity 240m/s, miss distance 10m, intersection angle 0°which means the airplane is head-on attacked by missile.