DETACHABLE DRIVING DEVICE OF SUBCALIBER JET PROJECTILE Russian patent published in 2001 - IPC

FIELD: small-sized jet projectiles. SUBSTANCE: the detachable driving device has bearing annular sectors with a recess on the front end. Made on the cylindrical surface of each annular sector, perpendicularly to the projectile longitudinal axis is a through stepped hole accommodating a spring-loaded pusher locked by a plug with an external central pin installed in the mating holes on the external surface of the projectile body. The pusher longitudinal axis is positioned relative to the center of mass of the bearing annular sector at a distance conditioned by the equality of the moments overturning the bearing annular sector, i.e. F_a•L = F_sp•l, where F_a-resultant aerodynamic force acting on the recess of the bearing annular sector at the instant of its separation from the projectile; L-distance from the resultant aerodynamic force to the center of mass of the bearing annular sector; Fsp-spring force acting on the pusher; l-distance between the pusher axis and the center of mass of the bearing annular sector. EFFECT: prevented damage of the projectile aerodynamic surfaces during transportation and at launching. 2 dwg