Underwater Acoustic Decoy Bullets Underwater Explosions And To Throw Dynamic Analysis

Given that Continuous Explosive Underwater Acoustic Decoy technology is a brand new subject for anti-torpedo warfare, this paper focused on the very issue. Accordingly, the standing dispersion of the acoustic decoys was analyzed as the premier study. Respectively, this paper was divided into two parts:(1) Underwater explosion analysis of the acoustic decoy warhead; (2) Flight dynamics model of the dispersion trajectory.First of all, based on the underwater explosion theory, small dose charges'simulation model were set up and simulated by AUTODYN software. This paper first analyzed the influences of the state equation and the grid density towards the simulation results, then martyrs explosion and shell deformation phenomenon which produced by the shock wave were discussed. Based on these research results, this paper obtained the minimum distribution distance of the acoustic decoy warheads.Second of all, after the Aerodynamic analysis of the decoy warhead, this paper proposed a random distribution model of the warhead's force area to substitute the random wind's influence, and then the dispersion trajectory model was set up accordingly. With the MATLAB coding, the trajectory model was simulated and analyzed, the standing dispersion of the decoy warheads was obtained. And it shown that the simulation result fit well with the experiment result. However, further studies were conducted by changing the dispersion parameters separately to obtain the influence factors accordingly. And the result of this research would provide valuable reference for both the theoretical and engineering application about the underwater acoustic decoy technology.At last summarized the research result and proposed the future research direction.