Patent ID: 7578238

Claim:
A projectile, comprising: a warhead casing having a nose end and a base end; a payload disposed in the warhead casing; a motor body attached to the base end of the warhead casing and having an igniter disposed therein; a base closure attached to the motor body, an exterior surface of the base closure being tapered to form a boat tail, the base closure and the motor body defining an interior volume; a propellant disposed in the interior volume, the propellant being used for base bleed operation, and a converter attached to the base closure and extending into the interior volume, wherein the converter comprises: a first cylindrical portion that is hollow; a generally conical portion that is hollow and connected to the first cylindrical portion; a second cylindrical portion that is hollow and connected to the generally conical portion; a plate disposed between the first cylindrical portion and the generally conical portion; and a flange disposed around a base of the second cylindrical portion.