Abstract: A solid fuel ramjet tubular projectile has a generally tubular body fabried of dense material or suitable hardened material having a bore formed therethrough and having first and second ends. A plurality of partitions divide the bore into a plurality of separate combustion chambers. Each of the combustion chambers extends longitudinally substantially the length of the body. Solid fuel is formed upon the body within each of the combustion cheers. An inlet is formed at the first end of the body, into which air is received. The inlet is configured so as to substantially decelerate air entering the inlet at supersonic velocity to subsonic velocity prior to the air entering the combustion cheers. An outlet, through which combustion gases flow, is formed at the second end of the body. A mixing section is preferably formed intermediate the combustion chamber and the outlet so as to facilitate substantial mixing of the combustion gases from each combustion chamber prior to the combustion gases entering the outlet.

Abstract: An elongate projectile for small arms use has a single unitary mass with a hollow nose cavity defined by a sharp rigid cutting edge adapted to make initial contact with the target surface and cut therethrough. The projectile then enters the target mass in an unstable flight mode. The projectile base is substantially solid such that the nose cavity, while relatively deep, does not extend entirely through the base and the projectile center of gravity is aft of its geometric center.

Abstract: A low-drag supersonic tubular projectile with self-contained thrust augmetion and capable of simultaneous dual internal air flows. One is a centrally located supersonic flow for providing low-drag characteristics, and the other a subsonic flow annularly arranged about the supersonic flow path, comprising a ramjet structure with solid fuel for deriving thrust augmentation enabling the projectile to achieve a terminal velocity which is substantially the same as or exceeding muzzle velocity.

Abstract: A hollow tubular projectile is disclosed having about 30 percent less mass han conventional ammunition projectiles and considerably less drag, as a result of precise aerodynamic design details.

Abstract: A discardable apparatus for mating with a full-caliber hollow tubular protile. The apparatus being discardable after expulsion from a cannon barrel. The apparatus essentially of a simple, one-piece discardable obturator having an outer cylindrically engravable surface for imparting spin to a projectile during passage through the cannon barrel. The obturator has an interior cavity formed of a flat surface and a detachable pusher plate fitted on said flat cavity surface.