The Magneto Hydrodynamic Explosive Munition (MAHEM) is a weapon being developed by DARPA that would utilize molten metal to penetrate enemy armor. The molten metal would be propelled by electromagnetic fields from explosions. The munition would be delivered to a target as a warhead "packaged into a missile, projectile or other platform." DARPA predicts the weapon will have greater efficiency, control, and precision than conventional explosively formed penetrators.
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MAHEM Wikipedia(Text) CC BY-SA