Study on the optimal damage model for directional detonation control of aimable warhead

Abstract

To meet the detonation control requirements of the directional warhead in cooperation with the fuze, a detonation control modeling method based on laser/millimeter wave compound azimuth detection fuze is proposed to study the scattering rule of the warhead’s pre-formed fragments. The fragmentation law of the warhead was experimentally and numerically studied under different initiation conditions. Combined with the azimuth detection fuze, the appropriate target azimuth recognition method is designed, and the warhead detonation strategy under different detection modes is matched. A target vulnerability equivalent model is used to simulate, the effect of the matching relationship between the fuze delay and miss distance on the damage effect. The simulation and experiment results show that the eccentric 90° three-line initiation can make the warhead generate a 90° fragment directional gain region, and the maximum average flying velocity of the fragment in the region is 2002.81 m·s⁻¹, which is 14.73 % higher than that of the central initiation. Compared with the traditional central point initiation fuze-warhead coordination, the damage probability of laser/millimeter wave azimuth detection fuze is increased by 8.2 %∼22.6 %. In the process of fuze-warhead coordination of directional warhead, a target damage probability calculation model with obvious physical significance is established by introducing parameters such as target miss distance and fuze delay.