Possibilities of controlling the shaped-charge effect by electromagnetic actions

This paper deals with electromagnetic actions that allow one to control the shaped-charge effect at different stages of shaped-charge operation. A decrease in penetration of the shaped-charge jet is attained by passage of a powerful electric current pulse through it, production of an axial magnetic field in the shaped-charge liner immediately before shot, and production of a magnetic field in the conducting target material that is transverse to the direction of jet propagation. The action on a jet by low-frequency and high-frequency longitudinal magnetic fields and "mild" current action are directed toward increasing the penetration capability of a. shaped-charge jet by increasing its ultimate elongation. Results of experimental and theoretical studies of different versions of electromagnetic actions are analyzed, and the associated physical effects are considered.