Creating a robust system of protection barriers requires a study of the various ways to counteract high-speed extended projectiles. This paper considers the interactions of projectiles with explosive throwing systems of smooth and ribbed plates, different combinations of rods from different materials. After contact rods and projectiles form a cruciform configuration. Deformation and fracture of projectiles reduces their penetration and the ability to break through the object shell. At the second stage, collision is considered by the residue of projectiles to the protected barriers.