BUCHSENMECHANISMUS FÜR DAS ÜBERSTEHEN KOMPLEXER GESCHOSSBÖDEN

A projectile (10) with extensible fins (24) is designed to be lightweight by removing material unnecessary to structural strength and filling the resulting voids with a non-metallic filler material (26). Although particularly suited where the extensible fins (24) are mounted behind the obturator (22) and that are therefore subjected to turbulent, destructive shock waves when the projectile is accelerated down the gun barrel, the method and apparatus can be used elsewhere as well. The filler material (26) may be high temperature grease, an epoxy, a silicone or other similar materials. The filler material (26) may be designed to fall away as soon as the projectile (10) exits the gun barrel, or it may be permanently adhered to the material of the projectile. The filler may be surrounded by a frangible boot (66, 66') to protect the filler during storage, shipment and loading into the gun.