Reliability Evaluation of the Electric Explosive Device During the Railgun′s Launching Process
During the launch process of the railgun,a strong pulsed magnetic field will be excited in the bore,resulting in energy coupling with the electric explosive device(EED)inside the fuze,threatening the reliability of the railgun ammunition.Firstly,regarding the characterization of the mag-netic field environment around the EED,the finite element method was applied to simulate the entire firing process of the railgun,the spatiotemporal distribution characteristics of the magnetic field in the projectile fuze region are identified,and the extreme changes caused by the special event of the projec-tile exiting the muzzle are highlighted.An investigation is then conducted into the coupling effects be-tween the EED and the strong pulsed magnetic field,which looks into the attenuation characteristics of the actual EED case and bridge geometries in the strong pulsed magnetic field.The electrothermal re-sponse of the transducer in the EED with different pin wire arrangements is analyzed with its reliability evaluated according to the minimum ignition energy and bridge melting point.The results show that the EED is reliable with the representative parameters of a railgun launching event.The analysis results can provide a reference for the design of electromagnetic railgun ammunition fuses.
NETL
NSTL
万方数据
