EP1429107B1 - Hollow charge - Google Patents

Hollow charge Download PDF

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Publication number
EP1429107B1
EP1429107B1 EP20030104269 EP03104269A EP1429107B1 EP 1429107 B1 EP1429107 B1 EP 1429107B1 EP 20030104269 EP20030104269 EP 20030104269 EP 03104269 A EP03104269 A EP 03104269A EP 1429107 B1 EP1429107 B1 EP 1429107B1
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EP
European Patent Office
Prior art keywords
axis
jet
confinement
tube
liner
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Expired - Fee Related
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EP20030104269
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German (de)
French (fr)
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EP1429107A1 (en
Inventor
Henri Ropars
Joel Ferron
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TDA Armements SAS
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TDA Armements SAS
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Publication of EP1429107A1 publication Critical patent/EP1429107A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/04—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type
    • F42B12/10—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with shaped or hollow charge
    • F42B12/14—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with shaped or hollow charge the symmetry axis of the hollow charge forming an angle with the longitudinal axis of the projectile

Definitions

  • the present invention relates to a core generating charge. It applies in particular to the charges placed in the ammunition acting in overflight of their objective.
  • Core generating charges also known as shaped charges or "Explosively Formed Penetrators (EFP)" in the ango-saxon literature
  • EFP Extensively Formed Penetrators
  • the coating is deformed to form a core, projected at a speed of the order of 2000 m / s to a target.
  • Such charges are used to form the military ammunition heads. They are also used in industry (drilling, mining ). The general operating principles of these charges are described in the W.P. "Fundamentals of Shaped Charges" document. Walters and J. A. Zukas (Publisher: CMCPress, ISBN: 0-471-62172-2).
  • the armored targets are more particularly vulnerable at the level of their upper parts, which is why it is sought to define ammunition nucleus generating charge whose direction of action is substantially vertical.
  • the FR2771166 describes for example an ammunition which acts in flying over the objective and which comprises a military head whose direction of action is substantially normal to the axis of the munition (ie substantially the direction of flight of the ammunition) .
  • the munition comprises a core generating charge whose confinement is substantially cylindrical in shape.
  • the coating is arranged so that the direction in which it is projected is perpendicular to the axis of the cylinder.
  • a disadvantage of this solution is that the position of the coating relative to the confinement does not effectively exploit all the explosive present in the confinement. This is the case in particular of the explosive at the periphery of the coating, the detonation of which does not contribute to the projection of the core.
  • the formed core can break into several pieces.
  • An object of the invention is to propose a core generating charge, intended to be used in a munition pulling along an axis. (direction of action) perpendicular to the axis of the munition, and which does not have these disadvantages.
  • One of the main advantages of the invention is that, for a given caliber of ammunition, it is possible to define a load whose volume is not limited by this caliber.
  • the invention makes it possible, by increasing the amount of explosive and the mass of the coating, to obtain a core which is more efficient than that of an axially symmetrical core generating charge housed in a similar manner in the munition.
  • this geometry makes it possible to facilitate the production of loads whose characteristics respect the planes of symmetry of the load, in particular for embodiments of loadings by casting or compression.
  • the void left between the confinement and the ammunition structure can be used to house electronic modules or as a passage for electrical cables.
  • the length of the short side of the rectangle is substantially equal to the length of the confinement along the axis of the tube.
  • the section of the tube is substantially an ellipse. This allows a good machinability of the confinement.
  • the shape of the coating has two perpendicular planes of symmetry whose intersection forms the axis of the tube.
  • the coating has at least one concave face.
  • the concave face of the coating is spherical or toric or ellipsoidal.
  • the average value of the radius of curvature of the concave face of the coating is equal to twice the length of the tube along its axis within plus or minus 20%.
  • initiators are placed on the surface of the confinement facing the coating.
  • the initiators are distributed symmetrically with respect to the planes of symmetry of the coating.
  • the initiators are four in number.
  • FIG. 1 to 3 represents an example of an ammunition comprising a load according to the invention.
  • the ammunition 2 has a substantially cylindrical body with respect to an axis of symmetry 3.
  • the axis of symmetry 3 is substantially horizontal, aligned with the direction of movement of the ammunition, when the ammunition is in flight.
  • the ammunition 2 has a load 1 placed inside.
  • This charge has a direction of action 4 substantially vertical, that is to say perpendicular to the axis of symmetry 3.
  • the load 1 comprises a containment 5 in which is placed an explosive charge (not shown). Containment may be made of steel, aluminum or plastic material for example.
  • the charge further comprises at least one initiator (not visible in this figure) for initiating the detonation of the explosive charge.
  • the containment 5 has an opening closed by a coating 6.
  • the coating is intended to form a core during the detonation of the explosive charge.
  • the coating may be made of metal, such as tantalum, nickel, iron or copper, for example.
  • the coating is located on one side of the ammunition, inside the outer profile of the munition and flush with the latter in its outermost parts.
  • the confinement substantially forms a tube along the axis 4.
  • the tube has in the horizontal plane (plane perpendicular to the axis 4) a section which is inscribed in a rectangle 7.
  • the section of the tube is an ellipse or almost a ellipse.
  • Rectangle 7 has a large side 8 and a small side 9 of different lengths.
  • the long side 8 is parallel to the axis 3.
  • the confinement being housed in the munition 2 its length along the axis 4 and the length of the short side 9 are limited by the caliber of the ammunition 2.
  • the length of the confinement along the axis 4 and the length of the short side of the rectangle are such that the confinement can be housed in a cylindrical tube (ammunition section) of axis parallel to the long side 8.
  • the length of the short side 9 is substantially equal to the length of the confinement along the axis of the tube 4.
  • the coating has two planes of symmetry 10 and 11. These planes of symmetry are perpendicular and their intersection forms the axis of the tube (axis 4).
  • the initiators 12 can be four in number and positioned on the face of the confinement 5 facing the coating 6, symmetrically with respect to the symmetry planes 10, 11 of the coating.
  • the coating may itself be symmetrical with respect to the planes 10, 11.
  • the explosive charge detonates by forming a wave symmetrical with respect to the planes 10, 11.
  • the coating being itself symmetrical with respect to the planes 10, 11, there is obtained a core propagating along the axis 4, and symmetrical with respect to the planes 10, 11.
  • the coating has at least one concave face.
  • the other side of the coating 16 may be flat or convex (if the coating has a constant thickness for example).
  • the concave face 15 of the coating is advantageously spherical, toric or ellipsoidal.
  • the average value of the radius of curvature 14 of the concave face 15 of the coating is equal to twice the length of the tube along its axis 4 within plus or minus 20%.
  • the coating closes the entire section of the tube. It therefore presents in this example a projection in a horizontal plane (plane perpendicular to the axis 4) elliptical 13. This allows not only to form a nucleus with greater efficiency, but also to allow to have a contact area between the coating and the confinement that is not limited by the thickness of the confinement (the contact is with the inner surface of the confinement, and not with an edge of the confinement).
  • the invention is not limited to this embodiment.
  • the number of initiators can be different.
  • the coating may have a variable thickness.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Description

La présente invention concerne une charge génératrice de noyau. Elle s'applique notamment aux charges placées dans les munitions agissant en survol de leur objectif.The present invention relates to a core generating charge. It applies in particular to the charges placed in the ammunition acting in overflight of their objective.

Les charges génératrices de noyau (connues aussi sous le nom de charges formées ou « Explosively Formed Penetrators (EFP) » dans la littérature ango-saxonne) sont des têtes explosives, comportant un revêtement mis en mouvement par la détonation d'un chargement explosif disposé dans un confinement (connu aussi sous le nom d'enveloppe) généralement métallique cylindrique. Le revêtement se déforme de façon à constituer un noyau, projeté à une vitesse de l'ordre de 2000 m/s vers une cible. De telles charges sont utilisées pour former les têtes militaires de munitions. Elles sont aussi utilisées dans l'industrie (forages, exploitations minières...). Les principes généraux de fonctionnement de ces charges sont décrits dans le document « Fundamentals of Shaped Charges » de W.P. Walters et J.A. Zukas (Editeur : CMCPress, ISBN : 0-471-62172-2).Core generating charges (also known as shaped charges or "Explosively Formed Penetrators (EFP)" in the ango-saxon literature) are explosive heads, having a coating set in motion by the detonation of an explosive charge arranged in a confinement (also known as envelope) generally cylindrical metal. The coating is deformed to form a core, projected at a speed of the order of 2000 m / s to a target. Such charges are used to form the military ammunition heads. They are also used in industry (drilling, mining ...). The general operating principles of these charges are described in the W.P. "Fundamentals of Shaped Charges" document. Walters and J. A. Zukas (Publisher: CMCPress, ISBN: 0-471-62172-2).

Les cibles blindées sont plus particulièrement vulnérables au niveau de leurs parties supérieures, c'est pourquoi on cherche à définir des munitions à charge génératrice de noyau dont la direction d'action est sensiblement verticale.The armored targets are more particularly vulnerable at the level of their upper parts, which is why it is sought to define ammunition nucleus generating charge whose direction of action is substantially vertical.

Le brevet FR2771166 décrit par exemple une munition qui agit en survol de l'objectif et qui comporte une tête militaire dont la direction d'action est sensiblement normal à l'axe de la munition (c'est à dire sensiblement la direction de vol de la munition). La munition comprend une charge génératrice de noyau dont le confinement est de forme sensiblement cylindrique. Le revêtement est disposé de telle sorte que la direction dans laquelle il est projeté soit perpendiculaire à l'axe du cylindre.The FR2771166 describes for example an ammunition which acts in flying over the objective and which comprises a military head whose direction of action is substantially normal to the axis of the munition (ie substantially the direction of flight of the ammunition) . The munition comprises a core generating charge whose confinement is substantially cylindrical in shape. The coating is arranged so that the direction in which it is projected is perpendicular to the axis of the cylinder.

Un inconvénient de cette solution est que la position du revêtement par rapport au confinement ne permet pas d'exploiter de manière efficace tout l'explosif présent dans le confinement. C'est le cas en particulier de l'explosif en périphérie du revêtement, dont la détonation ne contribue pas à la projection du noyau. En outre, le noyau formé peut se rompre en plusieurs morceaux.A disadvantage of this solution is that the position of the coating relative to the confinement does not effectively exploit all the explosive present in the confinement. This is the case in particular of the explosive at the periphery of the coating, the detonation of which does not contribute to the projection of the core. In addition, the formed core can break into several pieces.

Le document WO 02/21070 décrit une charge génératrice de noyau suivant le préambule de la revendication 1.The document WO 02/21070 discloses a core generating charge according to the preamble of claim 1.

Un but de l'invention est de proposer une charge génératrice de noyau, destinée à être utilisée dans une munition tirant suivant un axe (direction d'action ) perpendiculaire à l'axe de la munition, et qui ne présente pas ces inconvénients.An object of the invention is to propose a core generating charge, intended to be used in a munition pulling along an axis. (direction of action) perpendicular to the axis of the munition, and which does not have these disadvantages.

Ainsi, l'invention a notamment pour objet une charge génératrice de noyau comprenant un confinement, un revêtement destiné à former un noyau, dans lequel :

  • le confinement forme sensiblement un tube selon un axe, le tube étant ouvert à une extrémité, le tube possédant une section perpendiculaire à l'axe inscrite dans un rectangle, les deux côtés du rectangle ayant des longueurs différentes, la longueur du confinement selon l'axe et la longueur du petit côté du rectangle étant telles que le confinement puisse être logé dans un cylindre d'axe parallèle au grand côté du rectangle ;
  • le revêtement ferme l'ouverture du confinement, de telle sorte que le noyau formé par la détonation soit mis en mouvement dans une direction sensiblement parallèle à l'axe du tube.
Thus, the subject of the invention is in particular a core generating load comprising a confinement, a coating intended to form a core, in which:
  • the confinement substantially forms a tube along an axis, the tube being open at one end, the tube having a section perpendicular to the axis inscribed in a rectangle, the two sides of the rectangle having different lengths, the length of the confinement according to the axis and the length of the short side of the rectangle being such that the confinement can be housed in a cylinder axis parallel to the long side of the rectangle;
  • the coating closes the opening of the confinement, so that the core formed by the detonation is set in motion in a direction substantially parallel to the axis of the tube.

Un des principaux avantages de l'invention est que, pour un calibre de munition donné, il est possible de définir une charge dont le volume n'est pas limité par ce calibre. L'invention permet, par l'augmentation de la quantité d'explosif et de la masse du revêtement, d'obtenir un noyau plus performant que celui d'une charge génératrice de noyau axisymétrique logée de manière similaire dans la munition. De plus, cette géométrie permet de faciliter la réalisation de chargements dont les caractéristiques respectent les plans de symétrie de la charge, notamment pour des réalisations de chargements par coulée ou compression. Le vide laissé entre le confinement et la structure de la munition peut être utilisé pour loger des modules électroniques ou comme passage de câbles électriques.One of the main advantages of the invention is that, for a given caliber of ammunition, it is possible to define a load whose volume is not limited by this caliber. The invention makes it possible, by increasing the amount of explosive and the mass of the coating, to obtain a core which is more efficient than that of an axially symmetrical core generating charge housed in a similar manner in the munition. In addition, this geometry makes it possible to facilitate the production of loads whose characteristics respect the planes of symmetry of the load, in particular for embodiments of loadings by casting or compression. The void left between the confinement and the ammunition structure can be used to house electronic modules or as a passage for electrical cables.

Selon un mode de réalisation, la longueur du petit côté du rectangle est sensiblement égale à la longueur du confinement selon l'axe du tube.According to one embodiment, the length of the short side of the rectangle is substantially equal to the length of the confinement along the axis of the tube.

Selon un mode de réalisation avantageux, la section du tube est sensiblement une ellipse. Ceci permet une bonne usinabilité du confinement.According to an advantageous embodiment, the section of the tube is substantially an ellipse. This allows a good machinability of the confinement.

Selon un mode de réalisation avantageux, la forme du revêtement possède deux plans de symétrie perpendiculaires dont l'intersection forme l'axe du tube.According to an advantageous embodiment, the shape of the coating has two perpendicular planes of symmetry whose intersection forms the axis of the tube.

Selon un mode de réalisation avantageux, le revêtement a au moins une face concave.According to an advantageous embodiment, the coating has at least one concave face.

Selon un mode de réalisation avantageux, la face concave du revêtement est sphérique ou torique ou ellipsoïdale.According to an advantageous embodiment, the concave face of the coating is spherical or toric or ellipsoidal.

Selon un mode de réalisation avantageux, la valeur moyenne du rayon de courbure de la face concave du revêtement est égale au double de la longueur du tube selon son axe à plus ou moins 20% près.According to an advantageous embodiment, the average value of the radius of curvature of the concave face of the coating is equal to twice the length of the tube along its axis within plus or minus 20%.

Selon un mode de réalisation avantageux, des initiateurs sont placés sur la surface du confinement en regard du revêtement.According to an advantageous embodiment, initiators are placed on the surface of the confinement facing the coating.

Selon un mode de réalisation avantageux, les initiateurs sont répartis de manière symétrique par rapport aux plans de symétrie du revêtement.According to an advantageous embodiment, the initiators are distributed symmetrically with respect to the planes of symmetry of the coating.

Selon un mode de réalisation avantageux, les initiateurs sont au nombre de quatre.According to an advantageous embodiment, the initiators are four in number.

D'autres caractéristiques et avantages de l'invention apparaîtront à l'aide de la description qui suit faite en regard de dessins annexés :

  • les figure 1 à 3 représentent un exemple de munition comprenant une charge selon l'invention respectivement dans une vue latérale, une vue de dessus, et une vue radiale;
  • la figure 4, représente un section horizontale du confinement ;
  • les figures 5 à 8 représentent un exemple de charge selon l'invention dans respectivement dans une vue en perspective isométrique, une vue axiale (axe de la munition), une vue dessus, et une vue latérale ;
  • la figure 9 représente le revêtement dans une vue en perspective isométrique.
Other features and advantages of the invention will become apparent with the aid of the following description made with reference to the appended drawings:
  • the figure 1 to 3 represent an example of a munition comprising a load according to the invention respectively in a side view, a view from above, and a radial view;
  • the figure 4 , represents a horizontal section of the confinement;
  • the Figures 5 to 8 represent an example of a load according to the invention in respectively in an isometric perspective view, an axial view (axis of the munition), a view on it, and a side view;
  • the figure 9 represents the coating in an isometric perspective view.

On se réfère maintenant aux figures 1 à 3 qui représente un exemple de munition comprenant une charge selon l'invention. La munition 2 a un corps essentiellement cylindrique par rapport à un axe de symétrie 3. L'axe de symétrie 3 est sensiblement horizontal, aligné avec la direction de déplacement de la munition, lorsque la munition est en vol. La munition 2 comporte une charge 1 placée à l'intérieur. Cette charge présente une direction d'action 4 sensiblement verticale, c'est à dire perpendiculaire avec l'axe de symétrie 3.We now refer to Figures 1 to 3 which represents an example of an ammunition comprising a load according to the invention. The ammunition 2 has a substantially cylindrical body with respect to an axis of symmetry 3. The axis of symmetry 3 is substantially horizontal, aligned with the direction of movement of the ammunition, when the ammunition is in flight. The ammunition 2 has a load 1 placed inside. This charge has a direction of action 4 substantially vertical, that is to say perpendicular to the axis of symmetry 3.

On se réfère maintenant à la figure 4. La charge 1 comprend un confinement 5 dans lequel est placé un chargement explosif (non représenté). Le confinement peut être réalisé en acier, aluminium ou en matière plastique par exemple. La charge comprend en outre au moins un initiateur (non visible sur cette figure) destiné à amorcer la détonation du chargement explosif. Le confinement 5 présente une ouverture fermée par un revêtement 6. Le revêtement est destiné à former un noyau lors de la détonation du chargement explosif. Le revêtement peut être réalisé en métal, tel que Tantale, Nickel, Fer ou Cuivre par exemple.We now refer to the figure 4 . The load 1 comprises a containment 5 in which is placed an explosive charge (not shown). Containment may be made of steel, aluminum or plastic material for example. The charge further comprises at least one initiator (not visible in this figure) for initiating the detonation of the explosive charge. The containment 5 has an opening closed by a coating 6. The coating is intended to form a core during the detonation of the explosive charge. The coating may be made of metal, such as tantalum, nickel, iron or copper, for example.

Avantageusement, lorsque la charge est placée dans la munition, le revêtement se situe sur un côté de la munition, à l'intérieur du profil extérieur de la munition et affleurant ce dernier dans ses parties les plus extérieures.Advantageously, when the load is placed in the ammunition, the coating is located on one side of the ammunition, inside the outer profile of the munition and flush with the latter in its outermost parts.

Le confinement forme sensiblement un tube selon l'axe 4. Le tube présente dans le plan horizontal (plan perpendiculaire à l'axe 4) une section qui est inscrite dans un rectangle 7. Avantageusement, la section du tube est une ellipse ou quasi une ellipse. Le rectangle 7 présente un grand côté 8 et un petit côté 9 de longueurs différentes. Le grand côté 8 est parallèle à l'axe 3. Le confinement étant logé dans la munition 2, sa longueur selon l'axe 4 et la longueur du petit côté 9 sont limitées par le calibre de la munition 2. En d'autres termes, la longueur du confinement selon l'axe 4 et la longueur du petit côté du rectangle sont telles que le confinement puisse être logé dans un tube cylindrique (tronçon de munition) d'axe parallèle au grand côté 8.The confinement substantially forms a tube along the axis 4. The tube has in the horizontal plane (plane perpendicular to the axis 4) a section which is inscribed in a rectangle 7. Advantageously, the section of the tube is an ellipse or almost a ellipse. Rectangle 7 has a large side 8 and a small side 9 of different lengths. The long side 8 is parallel to the axis 3. The confinement being housed in the munition 2, its length along the axis 4 and the length of the short side 9 are limited by the caliber of the ammunition 2. In other words , the length of the confinement along the axis 4 and the length of the short side of the rectangle are such that the confinement can be housed in a cylindrical tube (ammunition section) of axis parallel to the long side 8.

Selon un mode de réalisation avantageux, pour maximiser le volume utile de la charge pour un calibre de munition donné, la longueur du petit côté 9 est sensiblement égale à la longueur du confinement selon l'axe du tube 4.According to an advantageous embodiment, to maximize the useful volume of the load for a given ammunition size, the length of the short side 9 is substantially equal to the length of the confinement along the axis of the tube 4.

On se réfère maintenant aux figures 5 à 8. Selon un mode de réalisation avantageux, le revêtement possède deux plans de symétrie 10 et 11. Ces plans de symétrie sont perpendiculaires et leur intersection forme l'axe du tube (axe 4).We now refer to Figures 5 to 8 . According to an advantageous embodiment, the coating has two planes of symmetry 10 and 11. These planes of symmetry are perpendicular and their intersection forms the axis of the tube (axis 4).

Les initiateurs 12 peuvent être au nombre de quatre, et être positionnés sur la face du confinement 5 située en regard de du revêtement 6, de manière symétrique par rapport aux plans de symétrie 10, 11 du revêtement. Le revêtement peut être lui-même symétrique par rapport aux plans 10, 11. Ainsi, le chargement explosif détonne en formant une onde symétrique par rapport aux plans 10, 11. Le revêtement étant lui-même symétrique par rapport aux plans 10, 11, on obtient un noyau se propageant selon l'axe 4, et symétrique par rapport aux plans 10, 11.The initiators 12 can be four in number and positioned on the face of the confinement 5 facing the coating 6, symmetrically with respect to the symmetry planes 10, 11 of the coating. The coating may itself be symmetrical with respect to the planes 10, 11. Thus, the explosive charge detonates by forming a wave symmetrical with respect to the planes 10, 11. The coating being itself symmetrical with respect to the planes 10, 11, there is obtained a core propagating along the axis 4, and symmetrical with respect to the planes 10, 11.

On se réfère maintenant à la figure 9. Selon un mode de réalisation avantageux, le revêtement a au moins une face 15 concave. L'autre face du revêtement 16 peut être plane ou convexe (si le revêtement a une épaisseur constante par exemple). La face concave 15 du revêtement est avantageusement sphérique, torique ou ellipsoïdale.We now refer to the figure 9 . According to an advantageous embodiment, the coating has at least one concave face. The other side of the coating 16 may be flat or convex (if the coating has a constant thickness for example). The concave face 15 of the coating is advantageously spherical, toric or ellipsoidal.

Avantageusement, la valeur moyenne du rayon de courbure 14 de la face concave 15 du revêtement est égale au double de la longueur du tube selon son axe 4 à plus ou moins 20% près.Advantageously, the average value of the radius of curvature 14 of the concave face 15 of the coating is equal to twice the length of the tube along its axis 4 within plus or minus 20%.

Avantageusement, le revêtement referme toute la section du tube. Il présente donc dans cet exemple une projection dans un plan horizontal (plan perpendiculaire à l'axe 4) en forme d'ellipse 13. Ceci permet non seulement de former un noyau avec une plus grande efficacité, mais aussi de permettre d'avoir une surface de contact entre le revêtement et le confinement qui n'est pas limitée par l'épaisseur du confinement (le contact se fait avec la surface intérieure du confinement, et non avec un bord du confinement).Advantageously, the coating closes the entire section of the tube. It therefore presents in this example a projection in a horizontal plane (plane perpendicular to the axis 4) elliptical 13. This allows not only to form a nucleus with greater efficiency, but also to allow to have a contact area between the coating and the confinement that is not limited by the thickness of the confinement (the contact is with the inner surface of the confinement, and not with an edge of the confinement).

Bien entendu l'invention ne se limite pas à cet exemple de réalisation. Le nombre d'initiateurs peut être différent. Le revêtement peut présenter une épaisseur variable.Of course, the invention is not limited to this embodiment. The number of initiators can be different. The coating may have a variable thickness.

Claims (10)

  1. Jet-forming charge (1) comprising a confinement (5), a liner (6) intended to form a jet, the confinement more or less forming a tube along an axis (4), the tube being open at one end, the liner closing the opening of the confinement in such a way that the jet formed by detonation is set in motion in the direction more or less parallel to the axis (4) of the tube, characterized in that the tube has a cross section at right angles to the axis falling within a rectangle (7), the two sides (8, 9) of the rectangle having different lengths, the length of the confinement along the axis and the length of the short side (9) of the rectangle being such that the confinement can be housed within a cylinder of axis parallel to the long side (8) of the rectangle.
  2. Jet-forming charge according to Claim 1,
    characterized in that the length of the short side (9) of the rectangle is more or less equal to the length of the confinement along the axis of the tube.
  3. Jet-forming charge according to either one of the preceding claims, characterized in that the cross section of the tube is more or less that of an ellipse.
  4. Jet-forming charge according to any one of the preceding claims, characterized in that the shape of the liner has two perpendicular planes of symmetry (10, 11) the intersection of which forms the axis (4) of the tube.
  5. Jet-forming charge according to any one of the preceding claims, characterized in that the liner (6) has at least one concave face (15).
  6. Jet-forming charge according to Claim 5, characterized in that the concave face of the liner is spherical or toric or ellipsoidal.
  7. Jet-forming charge according to either one of Claims 5 or 6, characterized in that the mean value of the radius of curvature (14) of the concave face of the liner is equal to twice the length of the tube along the axis give or take 20%.
  8. Jet-forming charge according to any one of the preceding claims, characterized in that it comprises initiators (12) placed on the surface of the confinement facing the liner.
  9. Jet-forming charge according to Claim 4, characterized in that it comprises initiators (12) distributed symmetrically with respect to the planes of symmetry (10, 11) of the liner.
  10. Jet-forming charge according to Claim 9, characterized in that there are four initiators.
EP20030104269 2002-12-13 2003-11-19 Hollow charge Expired - Fee Related EP1429107B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0215840A FR2848657B1 (en) 2002-12-13 2002-12-13 CHARGE GENERATING CORE
FR0215840 2002-12-13

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EP1429107A1 EP1429107A1 (en) 2004-06-16
EP1429107B1 true EP1429107B1 (en) 2010-01-20

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EP20030104269 Expired - Fee Related EP1429107B1 (en) 2002-12-13 2003-11-19 Hollow charge

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EP (1) EP1429107B1 (en)
AU (1) AU2003264628B2 (en)
DE (1) DE60331038D1 (en)
FR (1) FR2848657B1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3019731A (en) * 1960-02-19 1962-02-06 Advanced Oil Tools Inc Jet perforator for well casings
DE2741984C2 (en) * 1977-09-17 1984-01-26 Franz Rudolf Prof.Dr.Dipl.-Ing. West Vancouver Thomanek Warhead for an anti-tank missile with at least one spiked shaped charge
FR2736424B1 (en) * 1995-07-07 1997-08-08 Giat Ind Sa MILITARY HEAD WITH FORMED LOAD
FR2771166B1 (en) 1997-11-20 1999-12-17 Giat Ind Sa PROJECTILE WITH A RADIAL ACTION DIRECTION
SE522568C2 (en) * 2000-09-04 2004-02-17 Saab Ab Procedure for speed compensation of an RSV beam, as well as a robot

Also Published As

Publication number Publication date
FR2848657B1 (en) 2005-01-28
EP1429107A1 (en) 2004-06-16
FR2848657A1 (en) 2004-06-18
DE60331038D1 (en) 2010-03-11
AU2003264628A1 (en) 2004-07-01
AU2003264628B2 (en) 2009-12-03

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