Analysis of Anti Shaped-Charge Resistance of Electrodynamic Protection with Implementation of "Shutdown" of Energy Capacitive Storage

To increase the efficiency of metal shaped-charge jets destruction by electric current powerful pulse which is created by electrodynamic protection system, we offer to use the energy capacitive storage "shutdown" at the moment when its voltage becomes equal to zero in case of implementing the discharge periodic mode. As a result of an excluding the capacitive storage recharging, we provided a better agreement between the law of current change in discharge circuit and the time of motion of shaped-charge jet various parts through an interelectrode interval owing. We conducted the studies based on computational procedure. Meanwhile, we considered the development of necking-type magnetohydrodynamic instability of shaped-charge jet and its material dispergation with radial dispersion as possible physical mechanisms of reducing the penetration capability of shaped-charge jets under the powerful electrodynamic action. We carried out the comparative analysis of anti shaped-charge resistance of electrodynamic protection with "shutdown" and without "shutdown" of the capacitive storage in relation to a shaped charge of diameter about 90 mm with penetration depth in a homogeneous steel target 550...600 mm. Findings of the research show that use of the capacitive storage "shutdown" allows us at the fixed value of its energy to reduce the residual depth of shaped-charge jet penetration into a target. At the same time the effect of shaped charge penetrability reduction which is reached due to the capacitive storage "shutdown" depends on parameters of a discharge circuit.

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