EP0432031A1 - Armour plate for protection against ballistic projectiles - Google Patents

Armour plate for protection against ballistic projectiles Download PDF

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Publication number
EP0432031A1
EP0432031A1 EP19900403435 EP90403435A EP0432031A1 EP 0432031 A1 EP0432031 A1 EP 0432031A1 EP 19900403435 EP19900403435 EP 19900403435 EP 90403435 A EP90403435 A EP 90403435A EP 0432031 A1 EP0432031 A1 EP 0432031A1
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EP
European Patent Office
Prior art keywords
plate
auxiliary plate
shielding
cells
projectiles
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19900403435
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German (de)
French (fr)
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EP0432031B1 (en
Inventor
Michel Vives
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Societe Europeenne de Propulsion SEP SA
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Societe Europeenne de Propulsion SEP SA
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Publication of EP0432031A1 publication Critical patent/EP0432031A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0414—Layered armour containing ceramic material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/023—Armour plate, or auxiliary armour plate mounted at a distance of the main armour plate, having cavities at its outer impact surface, or holes, for deflecting the projectile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0414—Layered armour containing ceramic material
    • F41H5/0421—Ceramic layers in combination with metal layers

Definitions

  • the present invention relates to ballistic protection armor, comprising an armor plate intended to stop projectiles.
  • Such a shielding plate can be a metal plate, which leads to economical shielding, due to its low cost and the weldability of the plate, which is useful for stopping projectiles having a speed of less than 500 m / s.
  • a two-layer plate composed of a front element for ballistic protection, for example made of ceramic, and a rear element of structural strength, for example made of Kevlar.
  • a front element for ballistic protection for example made of ceramic
  • a rear element of structural strength for example made of Kevlar.
  • Such a two-layer plate offers a gain in mass and good performance for projectiles of speed greater than 500 m / s.
  • the object of the invention is to improve the ballistic performance of such shields, in particular of those which employ a two-layer plate of the type indicated above.
  • a shield according to the invention further comprises an auxiliary plate disposed in front of the shield plate, with a determined spacing, which is constituted by a ceramic plate pierced with a large number of cells distributed in a regular grid pattern. and formed by holes which are oriented perpendicular to the mean plane of the auxiliary plate. These holes may be blind holes opening onto the front face thereof, or through holes; in the latter case, the rear face of the auxiliary plate should be coated with an insulation sheet, for example aluminum or Kevlar, preserving the rear parts of the shielding.
  • an insulation sheet for example aluminum or Kevlar
  • the auxiliary plate placed in front of the armor plate has the effect of clawing the projectiles before they strike the armor plate, thus preparing by rupture primers their bursting on the latter.
  • the projectiles undergo destabilization on the part of the auxiliary plate, which collaborates in their fragmentation. This reduces the thickness, therefore the surface mass, of the armor plate, and thus achieving a weight gain over the whole armor, has equal efficiency.
  • This layer which preferably has a honeycomb structure, or can also be made of foam or elastomer, has a damping function.
  • the auxiliary plate can be made either of sintered ceramic such as alumina, silicon carbide or boron carbide, or in composite formed from a ceramic matrix containing a fibrous reinforcement.
  • the ceramic matrix can be constituted by silicon carbide or boron and the fibrous reinforcement by carbon fibers or silicon carbide.
  • the cells of the auxiliary plate preferably have a wall of cylindrical or prismatic shape with a diameter less than the caliber of the projectiles which the shielding must stop. If necessary, the front face of the auxiliary plate may include raised areas, regularly distributed in relation to the grid formed by the cells.
  • a lightened armor according to the invention finds application in particular for the protection of helicopters (seats, mechanical parts and engine) as well as in the manufacture of bullet-proof vests.
  • Figure 1 shows a cross section made through a portion of a shield according to the invention.
  • Figures 2 to 5 illustrate the phases of destruction of a projectile entering the armor of Figure 1.
  • Figures 6 and 7 show the projectile of Figure 3 seen respectively in side perspective and in section through a transverse plane.
  • FIGS. 8 and 9 represent two alternative embodiments of the auxiliary plate that the shield of FIG. 1 comprises.
  • FIG. 1 shows a protective shield against the impact of projectiles 15 of conventional ogival shape, composed of a main plate 10, an auxiliary plate 14, an intermediate layer 13 defining the spacing between the plates 10 and 14.
  • the auxiliary plate made of ceramic material, offers two flat and parallel faces; its front face, which receives the impact of projectiles 15, is pierced with cells 16 of circular section, formed, in the present example, of blind holes not opening on its rear face. These cells, cylindrical or possibly slightly conical, are distributed in rows and columns forming on the front face a regular grid.
  • Their axes 19 are oriented perpendicular to the surface of the front face and they have a circular section of diameter less than the caliber of the projectiles 15 to be stopped.
  • the front face of the auxiliary plate 14 can be given a shape which is not equal, possibly flat, but irregular, made up of raised areas inclined at various angles and directions of obliquity. Such a conformation can create a ricochet effect on the projectile, which increases the effectiveness of the armor.
  • FIG. 8 shows for example a plate 14 whose front face is formed of pyramids regular square bases, juxtaposed in rows and columns, the cells 16 being centered on the edges of the bases of said pyramids.
  • FIG. 9 shows another example where the plate 14 has a front face formed from juxtaposed parallel grooves, at the bottom of which the cells 16 are aligned.
  • the cells 16 can also offer a polygonal contour, for example hexagonal; such a conformation can be chosen whatever the structure adopted for the plate 14.
  • the auxiliary plate 14 can be made of sintered ceramic (alumina, silicon or boron carbide, etc.) or of ceramic fiber / matrix composite (C / SiC, C / B4C, SiC / SiC, etc.) .
  • the main plate 10 may comprise only a single element 11, made of ceramic matrix composite of one of the types indicated above, or comprise two elements 11, 12 joined together.
  • the front element 11 can be made of sintered ceramic, the rear element 12 then being made of Kevlar, a ceramic matrix composite or steel, or be made of a ceramic matrix composite, the element 12 being then steel, aluminum alloy or also Kevlar.
  • the intermediate layer 13 has here a honeycomb structure and can be made of aluminum, Kevlar-epoxy or fiberglass-epoxy, with a thickness leading to a spacing between the plates 10 and 14 of the order of the length a of the ogival point of the projectiles 15 to be stopped.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to an armouring for protection against ballistic projectiles, comprising an armour plate (10) which is intended for stopping projectiles (15) and in front of which is arranged, at a specific spacing, an auxiliary plate (14) consisting of a ceramic plate pierced with a large number of cells (16) distributed in a regular chequerwork pattern and formed from blind holes which are oriented perpendicularly to the rear face of the auxiliary plate and which open out onto the front face of the latter. The effect of the auxiliary plate (14) is to destabilise and catch the projectiles (15) so as to assist their explosion on the armour plate (10). <IMAGE>

Description

La présente invention se rapporte à un blindage de protection balistique, comprenant une plaque de blindage destinée à arrêter des projectiles.The present invention relates to ballistic protection armor, comprising an armor plate intended to stop projectiles.

Une telle plaque de blindage peut être une plaque métallique, ce qui conduit à un blindage économique, du fait de son faible coût et de la soudabilité de la plaque, intéressant pour arrêter des projectiles ayant une vitesse inférieure à 500 m/s.Such a shielding plate can be a metal plate, which leads to economical shielding, due to its low cost and the weldability of the plate, which is useful for stopping projectiles having a speed of less than 500 m / s.

On peut aussi utiliser une plaque bi-couche composée d'un élément avant de protection balistique, par exemple en céramique, et d'un élément arrière de tenue structurale, par exemple en Kevlar. Une telle plaque bi-couche offre un gain de masse et de bonnes performances pour les projectiles de vitesse supérieure à 500 m/s.It is also possible to use a two-layer plate composed of a front element for ballistic protection, for example made of ceramic, and a rear element of structural strength, for example made of Kevlar. Such a two-layer plate offers a gain in mass and good performance for projectiles of speed greater than 500 m / s.

L'invention a pour but d'améliorer les performances balistiques de tels blindages, notamment de ceux qui mettent en oeuvre une plaque bi-couche du type indiqué ci-dessus.The object of the invention is to improve the ballistic performance of such shields, in particular of those which employ a two-layer plate of the type indicated above.

A cet effet, un blindage selon l'invention comprend en outre une plaque auxiliaire disposée devant la plaque de blindage, avec un espacement déterminé, qui est constituée par une plaque de céramique percée d'un grand nombre d'alvéoles réparties suivant un quadrillage régulier et formées de trous qui sont orientés perpendiculairement au plan moyen de la plaque auxiliaire. Ces trous peuvent être des trous borgnes débouchant sur la face avant de celle-ci, ou des trous traversants; dans ce dernier cas, il convient de revêtir la face arrière de la plaque auxiliaire d'une feuille d'isolement, par exemple en aluminium ou en Kevlar, préservant les parties postérieures du blindage.For this purpose, a shield according to the invention further comprises an auxiliary plate disposed in front of the shield plate, with a determined spacing, which is constituted by a ceramic plate pierced with a large number of cells distributed in a regular grid pattern. and formed by holes which are oriented perpendicular to the mean plane of the auxiliary plate. These holes may be blind holes opening onto the front face thereof, or through holes; in the latter case, the rear face of the auxiliary plate should be coated with an insulation sheet, for example aluminum or Kevlar, preserving the rear parts of the shielding.

La plaque auxiliaire placée devant la plaque de blindage a pour effet de griffer les projectiles avant qu'ils percutent la plaque de blindage, préparant ainsi par des amorces de rupture leur éclatement sur cette dernière. En outre, les projectiles subissent une déstabilisation de la part de la plaque auxiliaire, qui collabore à leur fragmentation. Cela permet de réduire l'épaisseur, donc la masse surfacique, de la plaque de blindage, et de réaliser ainsi un gain de poids sur l'ensemble du blindage, a efficacité égale.The auxiliary plate placed in front of the armor plate has the effect of clawing the projectiles before they strike the armor plate, thus preparing by rupture primers their bursting on the latter. In addition, the projectiles undergo destabilization on the part of the auxiliary plate, which collaborates in their fragmentation. This reduces the thickness, therefore the surface mass, of the armor plate, and thus achieving a weight gain over the whole armor, has equal efficiency.

Il convient d'interposer, entre la plaque auxiliaire et la plaque de blindage précitées, une couche intermédiaire déterminant l'espacement entre ces deux plaques. Cette couche, qui présente de préférence une structure en nid d'abeilles, ou peut encore être réalisée en mousse ou en élastomère, a une fonction d'amortissement.It is advisable to interpose, between the aforementioned auxiliary plate and the shielding plate, an intermediate layer determining the spacing between these two plates. This layer, which preferably has a honeycomb structure, or can also be made of foam or elastomer, has a damping function.

La plaque auxiliaire peut être réalisée soit en céramique frittée telle que l'alumine, le carbure de silicium ou le carbure de bore, soit en composite formé d'une matrice céramique contenant un renforcement fibreux. Dans ce dernier cas, la matrice céramique peut être constituée par du carbure de silicium ou de bore et le renforcement fibreux par des fibres de carbone ou de carbure de silicium.The auxiliary plate can be made either of sintered ceramic such as alumina, silicon carbide or boron carbide, or in composite formed from a ceramic matrix containing a fibrous reinforcement. In the latter case, the ceramic matrix can be constituted by silicon carbide or boron and the fibrous reinforcement by carbon fibers or silicon carbide.

Les alvéoles de la plaque auxiliaire ont de préférence une paroi de forme cylindrique ou prismatique de diamètre inférieur au calibre des projectiles que doit arrêter le blindage. En cas de besoin, la face avant de la plaque auxiliaire peut comporter des zones en relief, réparties régulièrement en relation avec le quadrillage formé par les alvéoles.The cells of the auxiliary plate preferably have a wall of cylindrical or prismatic shape with a diameter less than the caliber of the projectiles which the shielding must stop. If necessary, the front face of the auxiliary plate may include raised areas, regularly distributed in relation to the grid formed by the cells.

Un blindage allégé selon l'invention trouve application notamment pour la protection des hélicoptères (sièges, organes mécaniques et moteur) ainsi que dans la confection de gilets pare-balles.A lightened armor according to the invention finds application in particular for the protection of helicopters (seats, mechanical parts and engine) as well as in the manufacture of bullet-proof vests.

D'autres particularités et avantages de l'invention ressortiront de la description qui va suivre, en regard des dessins annexés, d'exemples de réalisation non limitatifs.Other features and advantages of the invention will emerge from the description which follows, with reference to the appended drawings, of nonlimiting exemplary embodiments.

La figure 1 représente une coupe transversale faite a travers une portion d'un blindage selon l'invention.Figure 1 shows a cross section made through a portion of a shield according to the invention.

Les figures 2 à 5 illustrent les phases de destruction d'un projectile pénétrant dans le blindage de la figure 1.Figures 2 to 5 illustrate the phases of destruction of a projectile entering the armor of Figure 1.

Les figures 6 et 7 représentent le projectile de la figure 3 vu respectivement en perspective de côté et en coupe par un plan transversal.Figures 6 and 7 show the projectile of Figure 3 seen respectively in side perspective and in section through a transverse plane.

Les figures 8 et 9 représentent deux variantes de réalisation de la plaque auxiliaire que comporte le blindage de la figure 1.FIGS. 8 and 9 represent two alternative embodiments of the auxiliary plate that the shield of FIG. 1 comprises.

On voit sur la figure 1 un blindage de protection contre l'impact de projectiles 15 de forme ogivale classique, composé d'une plaque principale 10, d'une plaque auxiliaire 14, une couche intermédiaire 13 définissant l'espacement entre les plaques 10 et 14. La plaque auxiliaire, réalisée en matériau céramique, offre deux faces planes et parallèles; sa face avant, qui reçoit l'impact de projectiles 15, est percée d'alvéoles 16 de section circulaire, formées, dans le présent exemple, de trous borgnes ne débouchant pas sur sa face arrière. Ces alvéoles, cylindriques ou éventuellement légèrement coniques, sont réparties en rangées et en colonnes formant sur la face avant un quadrillage régulier. Leurs axes 19 sont orientés perpendiculairement a la surface de la face avant et elles présentent une section circulaire de diamètre inférieur au calibre des projectiles 15 à arrêter.FIG. 1 shows a protective shield against the impact of projectiles 15 of conventional ogival shape, composed of a main plate 10, an auxiliary plate 14, an intermediate layer 13 defining the spacing between the plates 10 and 14. The auxiliary plate, made of ceramic material, offers two flat and parallel faces; its front face, which receives the impact of projectiles 15, is pierced with cells 16 of circular section, formed, in the present example, of blind holes not opening on its rear face. These cells, cylindrical or possibly slightly conical, are distributed in rows and columns forming on the front face a regular grid. Their axes 19 are oriented perpendicular to the surface of the front face and they have a circular section of diameter less than the caliber of the projectiles 15 to be stopped.

Lorsqu'un projectile 15 frappe le blindage (figure 2), il rencontre tout d'abord la plaque auxiliaire 14. Du fait de la structure alvéolée de celle-ci du côté de l'impact des projectiles, l'enveloppe de laiton du projectile 15 est découpée et arrachée, tandis que des rainures longitudinales 17 sont créées dans son noyau en raison de la pénétration par frettage des parois brisées des alvéoles (figures 3, 6 et 7). Ces rainures provoquent des amorces de rupture sur le noyau du projectile 15 qui, lorsque celui-ci percute la plaque principale 10 (figure 4), favorisent son éclatement (figure 5), même s'il n'est plus animé que d'une vitesse relativement faible.When a projectile 15 strikes the armor (FIG. 2), it first meets the auxiliary plate 14. Due to the honeycomb structure of the latter on the side of the impact of the projectiles, the brass casing of the projectile 15 is cut and torn off, while longitudinal grooves 17 are created in its core due to the penetration by shrinking of the broken walls of the cells (Figures 3, 6 and 7). These grooves cause incipient fractures on the core of the projectile 15 which, when the latter strikes the main plate 10 (FIG. 4), favor its bursting (FIG. 5), even if it is no longer animated except by a relatively low speed.

En variante, on peut conférer à la face avant de la plaque auxiliaire 14 une forme non pas égale, éventuellement plane, mais irrégulière, composée de zones en relief inclinées suivant des angles et des directions d'obliquité divers. Une telle conformation peut créer un effet de ricochet sur le projectile, ce qui accroît l'efficacité du blindage. La figure 8 montre par exemple une plaque 14 dont la face avant est formée de pyramides régulières à base carrée, juxtaposées en rangées et en colonnes, les alvéoles 16 étant centrées sur les arêtes des bases desdites pyramides. La figure 9 montre un autre exemple où la plaque 14 présente une face avant formée de cannelures parallèles juxtaposées, au fond desquelles sont alignées les alvéoles 16.As a variant, the front face of the auxiliary plate 14 can be given a shape which is not equal, possibly flat, but irregular, made up of raised areas inclined at various angles and directions of obliquity. Such a conformation can create a ricochet effect on the projectile, which increases the effectiveness of the armor. FIG. 8 shows for example a plate 14 whose front face is formed of pyramids regular square bases, juxtaposed in rows and columns, the cells 16 being centered on the edges of the bases of said pyramids. FIG. 9 shows another example where the plate 14 has a front face formed from juxtaposed parallel grooves, at the bottom of which the cells 16 are aligned.

Les alvéoles 16 peuvent également offrir un contour polygonal, par exemple hexagonal; une telle conformation peut être choisie quelle que soit la structure adoptée pour la plaque 14.The cells 16 can also offer a polygonal contour, for example hexagonal; such a conformation can be chosen whatever the structure adopted for the plate 14.

D'une manière générale, la plaque auxiliaire 14 peut être réalisée en céramique frittée (alumine, carbure de silicium ou de bore, etc) ou en composite fibre/matrice céramique (C/SiC, C/B₄C, SiC/SiC, etc). La plaque principale 10 peut ne comprendre qu'un élément 11 unique, réalisé en composite à matrice céramique de l'un des types indiqués ci-dessus, ou comprendre deux éléments 11, 12 accolés. Dans ce dernier cas, l'élément antérieur 11 peut être réalisé en céramique frittée, l'élément postérieur 12 étant alors en Kevlar, en composite à matrice céramique ou en acier, ou être réalisé en composite à matrice céramique, l'élément 12 étant alors en acier, en alliage d'aluminium ou également en Kevlar. Quant à la couche intermédiaire 13, elle présente ici une structure en nid d'abeilles et peut être réalisée en aluminium, en Kevlar-époxy ou en fibre de verre-époxy, avec une épaisseur conduisant à un espacement entre les plaques 10 et 14 de l'ordre de la longueur a de la pointe ogivale des projectiles 15 à arrêter.Generally, the auxiliary plate 14 can be made of sintered ceramic (alumina, silicon or boron carbide, etc.) or of ceramic fiber / matrix composite (C / SiC, C / B₄C, SiC / SiC, etc.) . The main plate 10 may comprise only a single element 11, made of ceramic matrix composite of one of the types indicated above, or comprise two elements 11, 12 joined together. In the latter case, the front element 11 can be made of sintered ceramic, the rear element 12 then being made of Kevlar, a ceramic matrix composite or steel, or be made of a ceramic matrix composite, the element 12 being then steel, aluminum alloy or also Kevlar. As for the intermediate layer 13, it has here a honeycomb structure and can be made of aluminum, Kevlar-epoxy or fiberglass-epoxy, with a thickness leading to a spacing between the plates 10 and 14 of the order of the length a of the ogival point of the projectiles 15 to be stopped.

Claims (11)

Blindage de protection balistique comprenant une plaque de blindage destinée à arrêter des projectiles, caractérisé par le fait qu'il comprend en outre une plaque auxiliaire (14) disposée devant la plaque de blindage (10), avec un espacement déterminé, et constituée par une plaque de céramique percée d'un grand nombre d'alvéoles (16) réparties suivant un quadrillage régulier et formées de trous qui sont orientés perpendiculairement au plan mcyen de la plaque auxiliaire.Ballistic protection shield comprising a shielding plate intended to stop projectiles, characterized in that it further comprises an auxiliary plate (14) disposed in front of the shielding plate (10), with a determined spacing, and constituted by a ceramic plate pierced with a large number of cells (16) distributed in a regular grid pattern and formed by holes which are oriented perpendicular to the mesc plane of the auxiliary plate. Blindage selon la revendication 1, caractérisé par le fait que les trous formant les alvéoles (16) sont des trous borgnes débouchant sur la face avant de la plaque auxiliaire (14).Shielding according to claim 1, characterized in that the holes forming the cells (16) are blind holes opening onto the front face of the auxiliary plate (14). Blindage selon la revendication 1, caractérisé par le fait que les trous formant les alvéoles (16) sont des trous traversants, obturés par une feuille recouvrant la face arrière de la plaque auxiliaire (14).Shielding according to claim 1, characterized in that the holes forming the cells (16) are through holes, closed by a sheet covering the rear face of the auxiliary plate (14). Blindage selon l'une quelconque des revendications 1 à 3, caractérisé par le fait qu'entre la plaque auxiliaire (14) et la plaque de blindage (10) est interposée une couche intermédiaire (13) déterminant l'espacement entre ces deux plaques.Shielding according to any one of claims 1 to 3, characterized in that between the auxiliary plate (14) and the shielding plate (10) is interposed an intermediate layer (13) determining the spacing between these two plates. Blindage selon la revendication 4, caractérisé par le fait que la couche intermédiaire (13) présente une structure en nid d'abeilles.Shield according to claim 4, characterized in that the intermediate layer (13) has a honeycomb structure. Blindage selon l'une quelconque des revendications 1 à 5, caractérisé par le fait que la plaque auxiliaire (14) est réalisée en céramique frittée telle que l'alumine, le carbure de silicium ou le carbure de bore.Shield according to any one of claims 1 to 5, characterized in that the auxiliary plate (14) is made of sintered ceramic such as alumina, silicon carbide or boron carbide. Blindage selon l'une quelconque des revendications 1 à 5, caractérisé par le fait que la plaque auxiliaire (14) est réalisée en composite formé d'une matrice céramique contenant un renforcement fibreux.Shielding according to any one of Claims 1 to 5, characterized in that the auxiliary plate (14) is made of composite formed from a ceramic matrix containing a fibrous reinforcement. Blindage selon la revendication 7, caractérisé par le fait que la matrice céramique est constituée par du carbure de silicium ou de bore.Shield according to claim 7, characterized in that the ceramic matrix consists of silicon or boron carbide. Blindage selon la revendication 7 ou 8, caractérisé par le fait que le renforcement fibreux est constitué par des fibres de carbone ou de carbure de silicium.Armor according to claim 7 or 8, characterized in that the fibrous reinforcement consists of carbon fibers or silicon carbide. Blindage selon l'une quelconque des revendications 1 à 9, caractérisé par le fait que les alvéoles (16) de la plaque auxiliaire (14) ont une paroi de forme cylindrique ou prismatique de diamètre inférieur au calibre des projectiles (15) que doit arrêter le blindage.Shielding according to any one of Claims 1 to 9, characterized in that the cells (16) of the auxiliary plate (14) have a wall of cylindrical or prismatic shape with a diameter less than the caliber of the projectiles (15) which must stop the shielding. Blindage selon l'une quelconque des revendications 1 à 10, caractérisé par le fait que la face avant de la plaque auxiliaire (14) comporte des zones en relief réparties régulièrement en relation avec le quadrillage formé par les alvéoles (16).Shielding according to any one of Claims 1 to 10, characterized in that the front face of the auxiliary plate (14) has raised areas distributed regularly in relation to the grid formed by the cells (16).
EP90403435A 1989-12-06 1990-12-04 Armour plate for protection against ballistic projectiles Expired - Lifetime EP0432031B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8916137 1989-12-06
FR8916137A FR2655413B1 (en) 1989-12-06 1989-12-06 BALLISTIC PROTECTION SHIELD.

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EP0432031A1 true EP0432031A1 (en) 1991-06-12
EP0432031B1 EP0432031B1 (en) 1995-08-02

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US (1) US5221807A (en)
EP (1) EP0432031B1 (en)
CA (1) CA2031617C (en)
DE (1) DE69021346T2 (en)
FR (1) FR2655413B1 (en)

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US5349893A (en) * 1992-02-20 1994-09-27 Dunn Eric S Impact absorbing armor
FR2731512A1 (en) * 1995-03-06 1996-09-13 Giat Ind Sa Transparent armoured panel to protect vehicle against projectiles
WO1999011997A1 (en) * 1997-09-04 1999-03-11 Akzo Nobel Nv Composite system for protection against bullets and fragments
DE202010000965U1 (en) 2010-01-15 2010-05-20 Rheinmetall Landsysteme Gmbh Device for fastening preferably sandwich panels
WO2013087370A3 (en) * 2011-12-12 2013-10-24 Renco World Corporation A support member used in structure members
CN105737674A (en) * 2016-02-29 2016-07-06 中国航空工业集团公司北京航空材料研究院 Manufacturing method of novel high-strength protecting armor plate
WO2021242201A1 (en) * 2020-05-29 2021-12-02 Tusas- Turk Havacilik Ve Uzay Sanayii Anonim Sirketi An armour system

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FR2655413A1 (en) 1991-06-07
DE69021346T2 (en) 1996-03-21
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CA2031617A1 (en) 1991-06-07
US5221807A (en) 1993-06-22
DE69021346D1 (en) 1995-09-07
CA2031617C (en) 1995-09-12
FR2655413B1 (en) 1994-06-03

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