High-speed jet group penetration into brittle materials

The group impact of space charge jets (SCJs) on a composite target consisting of corundum and fiber glass-reinforced plastic layers has been studied. It is established that, under certain spatial and temporal conditions, the collective action of SCJs enhances the efficiency of brittle material resistance to high-speed jet penetration. These features are manifested for a subsonic character of penetration and confirm the proposed mechanism of the radial action of a crater formed in a high-strength brittle material on the SCJ propagation.