Effect of Sabot Front Borerider Stiffness on the Launch Dynamics of Fin-Stabilized Kinetic Energy Ammunition.

摘要

The influence of sabot front borerider stiffness on the launch dynamics of generic 25mm fin-stabilized kinetic energy ammunition has been experimentally examined. The effects of this parameter on the jump and dispersion of the ammunition are presented and analyzed. The major conclusions of this report are that: (1) the linear and angular dynamic state of the projectile at shot exit is not dominated by the motion of the gun muzzle but is primarily dependent on the relative motion of the projectile to the bore centerline (i.e., the in-bore balloting), (2) the front borerider stiffness clearly alters the inbore response of the projectile and (3) the dispersion of the ammunition is a result of a complex interaction determined by the dynamic state of the projectile at muzzle exit. Keywords: Sabot petal stiffness, In-bore balloting motion, Interior ballistics, Gun tubes. (aw)