Abstract
The distribution characteristics of a warhead fragment field formed by projectile proximity explosion constitute an important factor that affects the damage of spatial target. In this study, the relationship between the warhead fragment spatial parameters and the damaged target was established. Damage efficiency of projectile proximity explosion to target under the intersection condition of multi-posture warhead fragment and damaged target was investigated. Furthermore, by utilizing the relative spatial coordinate transformation relationship between warhead fragment and damaged target a calculation model for damage element hitting damaged target position was established. Moreover, herein the calculation function of the damaged area of the damaged target under different intersection postures was obtained after projectile proximity explosion, and finally the calculation model of the damage probability of the warhead fragment to the damaged target was derived. Through theoretical calculation and experimental analysis, the correlation relationship between the distribution parameters of the warhead fragments and the spatial position coordinates of the damaged target was analyzed. Based on the explosion point and warhead fragment parameters obtained using the multiple screens testing system, and then by using spatial coordinate matrix to carry out the corresponding calculation, the parameters of the system software were provided, the damage results of the target under the follow-up state of projectile proximity explosion were obtained, and the effectiveness and accuracy of the established target damage assessment method were verified.
Highlights
The damage effectiveness of proximity fuse to the target is an important factor to measure fuse effectiveness
To assess the damage effectiveness of the target, the relationship between the projectile proximity position and the spatial target position should be mastered, and the projectile explodes when it satisfies the condition of projectile proximity explosion [1]
The intersection area between warhead fragments field formed in the instant of projectile proximity explosion and target is known as the target damage surface in the target relative velocity coordinate system, and the normal vector of target damage surface is shown by formula (16)
Summary
The damage effectiveness of proximity fuse to the target is an important factor to measure fuse effectiveness. The intersection area between warhead fragments field formed in the instant of projectile proximity explosion and target is known as the target damage surface in the target relative velocity coordinate system, and the normal vector of target damage surface is shown by formula (16). TARGET DAMAGE ANALYSIS BASED ON MULTI-POSTURE PROJECTILE AND TARGET INTERSECTION In order to analyze the damage of the target under multiposture intersection of projectile and target, given the projectile flight velocity and target flight velocity, the spatial coordinate transformation matrix is utilized to obtain the calculation model of the target’s motion coordinate under the same coordinate system, and the coordinate function of fragments hitting the target. When the spatial position of projectile proximity explosion is within the spatial area, and the dispersion velocity and direction of damage element meet the formula (26), the warhead fragments group can hit the target. The spatial position of projectile proximity explosion, the damage area of projectile proximity explosion, and the spatial warhead fragments distribution density after projectile proximity explosion, mainly determine the target damage probability by the single projectile
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