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Ball-Actuated Tubular Projectile.

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Patent, Filed 10 Apr 81, patented 3 May 83,

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Tubular projectiles have been known in the prior art since the turn of the century. However, prior art tubular projectiles have required a sabot to be either inserted within the tubular conduit of the projectile or fitted around the base end thereof so as to prevent propelling gases from escaping through the gun barrel by way of the internal conduit passing through said projectile. Although satisfactory for limited purposes, such projectiles have inadequacies in certain military applications. For example, in an aircraft having an airbreathing engine the ingestion of the sabots afer separation from the projectiles often causes premature and deleterious engine failure. Additionally, in land based weaponry the separation of the sabot frequently impacts areas outside the intended target areas exposing friendly personnel to the hazards of injury due to impaction by said sabots. Additionally, in recent times, it has been known to provide an internal ball-actuated valve to replace the sabot such that a unitary projectile is formed. Such projectiles have the advantage of being able to be used by aircraft having airbreathing engines and to fire over friendly occupied territory. However, known fabrication techniques have used two part projectile bodies having an internal valve and require expensive fitting and testing in the fabrication, thereby raising the cost of these projectiles to make them unattractive for mass production as would be required for standard military arms. An improved tubular projectile formed from a single piece body member having a ball valve resiliently held in a closed position therein and a method of manufacture is disclosed. Patents

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  • Ammunition and Explosives

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