Multipoint Initiation Technique Gain Efficiency Warhead Eccentric

To meet the demand of efficient launcher for the new antiaircraft missile weapon system, this paper mainly studies off-center multi-point synchronous explosive logic circuitandits enhancement efficiency for aimed warhead by means of experiment, theoretic and numerical simulation.Off-center multi-point synchronous explosive logic circuitwas is the key technique owing to this aimed warhead takes advantage of synchronous explosive to achieve aimed damage. This paper adopted "T" pattern explosive trough as ignition switch through taking a new explosive that has the superiority on tiny stable burst critical diameter and little range of detonation velocity as logic circuitwas charge structure, meanwhile a off-center multi-point (eight average points in circumferential direction and three average points on the each generatrix based on points above stated, reference to axis of warhead) synchronous explosive logic circuit was designed, and the synchronization of multi-point explosive was tested with the probe method, the results indicate that the super synchronization is completely satisfied for using requirement of aimed warhead.Due to complicated action mechanism of off-center multi-point synchronous explosive aimed warhead, achieving accurate theoretical analysis is difficult. This paper established physical model of off-center multi-point synchronous explosive aimed warhead, and the numerical simulation for the action procedure and enhancement is conducted by using ANSYS/LS-DYNA based on studied for structure and ignition way of off-center multi-point synchronous explosive aimed warhead, and it was tested by explode experiment, enhancement of fragment number and velocity were obtained in the condition of different off-center multi-point synchronous explosive in aimed area, the results indicate the way of off-center multi-point synchronous explosive has huge effection on enhancement of fragment number and velocity, for off-center multi-point synchronous explosive logic circuit,90°nine-point synchronous explosive is the best option, followed by90°six-point synchronous explosive,45°six-point synchronous explosive is final.The result of this paper can provide technical assistance and theoretical basis for the choice of initiation and application of aimed warhead.