Abstract: In order to study the performance of grooved projectiles rotarily penetrating into concrete target, the penetration experiments of non-rotating oral projectiles and non-rotating grooved projectiles against the mortar concrete targets were conducted with the use of 14.5 mm smooth-bore gun. And the penetration experiments of rotating oral projectiles and rotating grooved projectiles against the mortar and limestone concrete targets were conducted with the use of 14.5 mm rifled bore gun. The results show that the grooved projectile and rotating penetration can be used to change the concrete failure from a single axial compression to the combined effects of axial compression and circumferential shear. The axial resis-tance of projectile becomes lower and the penetration power of the projectile gets stronger. The anti-penetration capability of limestone concrete target is stronger than that of mortar concrete target.

Key words: ordnance science and technology, penetration, rotation, grooved projectile, experimental research