Patent ID: 6769643
Filing Date: 2004-08-03
Classification: F42B

Abstract:
A projectile (12) which is to be fired from a barrel and which at its tail (10) has control surface vanes (14) which are movable from a sub-calibre launch position into an over-calibre functional position, characterised in that a securing pot (18) having a pot peripheral portion (22) and a pot bottom (24) is temporarily fixed to the tail (10) in such a way that the vanes (14) are held in their launch position by the pot peripheral portion (22) and that a pressure chamber (32) is present between the tail end face (26) of the projectile (12) and the pot bottom (24) of the securing pot (18), wherein the pot bottom (24) has at least one propellent gas inlet (34) which opens into the pressure chamber (32), wherein the pot peripheral portion (22) is pressure-tightly sealed off relative to the tail (10) of the projectile (12), and the tail (10) of the projectile (12) has behind the vanes (14) at least one sealing ring (40) for pressure-tightly sealing off the pot peripheral portion (22) relative to the tail (10) of the projectile (12).