Apparatus, methods and system for improved lightweight armor...

F - Mech Eng,Light,Heat,Weapons – 41 – H

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Details

F41H 5/04 (2006.01) F41H 1/00 (2006.01) F41H 5/007 (2006.01)

Patent

CA 2700883

An apparatus, method and system to enhance the performance of composite armor by utilizing energy of the threat projectile. The frontal member includes a plurality of concentric grooves on the face opposite of the surface impacted by a projectile, and the grooves mate with a complimentary plurality of concentric channels in a backing plate. The force from the impacting projectile presses the grooves of the frontal member into engagement with the channels of the backing plate. The groove design causes the backing plate to impart a compressive load into the backside of the frontal member, preventing it from prematurely fracturing in tension at the onset of the projectile penetration. The angles of each concentric groove are individually selected to cause the groove induced compressive loads to match the frontal member tensile loads from the penetrating projectile, maintaining the structural integrity of the frontal member until the projectile is defeated.

La présente invention concerne un appareil, un procédé et un système pour augmenter les performances d'une armure composite en utilisant l'énergie du projectile de menace. L'élément frontal comprend, par exemple, une pluralité de rainures concentriques sur la face opposée de la surface qui est heurtée par un projectile. Les rainures dans l'élément frontal peuvent s'accoupler, de préférence, avec une pluralité complémentaire de rainures concentriques dans une plaque de renforcement. Lors de l'impact par un projectile, la force du projectile pousse les rainures de l'élément frontal à se mettre en prise avec les rainures de la plaque de renforcement. Les rainures sont conçues de manière unique afin que la plaque de renforcement transmette une charge de compression à la face arrière de l'élément frontal, l'empêchant ainsi de se briser prématurément sous l'effet de la tension au moment de la pénétration du projectile. Selon le mode de réalisation préféré des rainures de l'élément frontal, les angles de chacune des rainures concentriques sont choisis individuellement pour que les charges de compression induites par les rainures correspondent aux charges de tension de l'élément frontal du projectile en pénétration. L'intégrité structurelle de l'élément frontal est ainsi maintenue jusqu'à ce que le projectile soit rejeté.

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