Influence of magnetic fields on shaped-charge performance

Summary form given only, as follows. The 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 for a shaped-charge jet is attained by passage of a powerful current pulse through it, production of an axial magnetic field in the shaped-charge current 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 the shaped-charge jet effect for different versions of electromagnetic actions are presented, and the associated physical effects are considered.