Projectile resistant structure

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

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F41H 1/02 (2006.01) F41H 5/08 (2006.01)

Patent

CA 2298670

Projectile resistant structure (1) comprises a plurality of stacked flexible shield layers (20). Layers (20) are in general not bonded to one another, so that when a first of such layers is struck by spinning projectile (1) the layer acts without significant structural or other support from any other layers in countering the rotation of the projectile. Preferred shield layers are comprised of anisotropic puncture-resistant materials, stacked such that the principal axes of the layers are offset from each other, and further include substantially soft, impact-dissipating cores (3) disposed adjacent to one or more shield layers so as to spread the force imposed by an impacting projectile across a broader area of the shielded structure or body than would otherwise be affected by the impact. Cores are preferably water-resistant and less dense than water, such that they float and serve to support the shielded structure or body in water.

Structure (1) résistante aux projectiles comprenant une pluralité de couches de protection (20) souples empilées les unes sur les autres. Ces couches (20) n'adhèrent, en général, pas les unes aux autres, de sorte que, quand une première de ces couches est frappée par un projectile (i) en rotation, elle s'oppose à la rotation du projectile sans que les autres couches ne lui apportent de support important au moyen, par exemple, de leur structure. Les couches de protection préférées sont composées de matériaux anisotropes résistants à la perforation et empilés de façon que les axes principaux des couches sont décalés les uns des autres et elles comprennent, de plus, des âmes (3) pratiquement molles dissipant l'impact situées en position contiguë à une ou plusieurs couches de protection, de manière à diffuser la force exercée par l'impact d'un projectile à travers une zone de la structure ou du corps protégés plus large que celle qui serait touchée par l'impact. Ces âmes sont, de préférence, résistantes à l'eau et moins denses que l'eau, de sorte qu'elles flottent et servent à supporter la structure ou le corps protégés dans l'eau.

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