EP1429107A1 - Hollow charge - Google Patents

Hollow charge Download PDF

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Publication number
EP1429107A1
EP1429107A1 EP03104269A EP03104269A EP1429107A1 EP 1429107 A1 EP1429107 A1 EP 1429107A1 EP 03104269 A EP03104269 A EP 03104269A EP 03104269 A EP03104269 A EP 03104269A EP 1429107 A1 EP1429107 A1 EP 1429107A1
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EP
European Patent Office
Prior art keywords
coating
axis
confinement
tube
generating charge
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Granted
Application number
EP03104269A
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German (de)
French (fr)
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EP1429107B1 (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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Publication of EP1429107B1 publication Critical patent/EP1429107B1/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 charges placed in munitions acting in overview of their goal.
  • Core generating charges also known as formed or "Explosively Formed Penetrators (EFP)" in the ango-saxon literature
  • EFP Extensively Formed Penetrators
  • the coating is deformed so as to constitute a core, projected at a speed of the order of 2000 m / s towards a target.
  • Such charges are used to form the military heads of ammunition. They are also used in the industry (boreholes, mining ). The general principles of operation of these charges are described in W.P.'s "Fundamentals of Shaped Charges” document. Walters and J. A. Zukas (Publisher: CMCPress, ISBN: 0-471-62172-2).
  • Armored targets are particularly vulnerable to level of their upper parts, that is why we seek to define core-generating charge ammunition whose direction of action is substantially vertical.
  • FR2771166 patent describes for example a munition which acts in overflight of the objective and which includes a military head whose direction of action is substantially normal to the axis of the munition (that is to say substantially the flight direction of the ammunition).
  • the ammunition includes a charge core generator whose confinement is substantially shaped cylindrical.
  • 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 in relation to the containment does not allow to exploit in a manner effective all the explosive present in the confinement. This is particularly the case explosive on the periphery of the coating, the detonation of which does not contribute at the projection of the nucleus.
  • the formed nucleus can break in several pieces.
  • An object of the invention is to propose a generating charge of core, 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 not these disadvantages.
  • One of the main advantages of the invention is that for a given caliber of ammunition, it is possible to define a charge whose volume is not limited by this template.
  • the invention makes it possible, by increasing the amount of explosive and the mass of the coating, to obtain a nucleus more efficient than that of an axisymmetric core generating charge housed similarly in the ammunition.
  • this geometry allows to facilitate the realization of loads whose characteristics respect the planes of symmetry of the load, in particular for realizations of loads by casting or compression.
  • the gap left between confinement and the ammunition structure can be used to house modules electronic or as a passage of electric 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 minus 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 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 symmetry planes of the coating.
  • the initiators are number of four.
  • FIGS. example of 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 presents a direction of action 4 substantially vertical, ie perpendicular with the axis of symmetry 3.
  • the load 1 comprises a containment 5 in which is placed an explosive charge (no represent). Containment may be made of steel, aluminum or plastic material for example.
  • the load further comprises at least one initiator (not visible in this figure) intended to initiate the detonation of the explosive charge. Containment 5 has an opening closed by 6.
  • the coating is intended to form a core during the detonation of the explosive charge.
  • the coating can be made of metal, such as Tantalum, Nickel, Iron or Copper for example.
  • the coating is on one side of the ammunition, inside the profile outside the ammunition and flush with the latter in its most exterior.
  • the confinement substantially forms a tube along the axis 4.
  • the tube present 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 an 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 ammunition 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 small side of the rectangle are such that confinement can be housed in a cylindrical tube (ammunition section) with axis parallel to the long side 8.
  • the length of the small 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 located opposite the coating 6, symmetrically with respect to the symmetry planes 10, 11 of the coating.
  • the coating may itself be symmetrical with respect to plans 10, 11.
  • the explosive charge detonates by forming a wave symmetrical with respect to the plans 10, 11.
  • the coating being itself symmetrical with respect to the planes 10, 11, we obtain a nucleus propagating along the axis 4, and symmetrical with respect to the planes 10, 11.
  • the coating has at least one concave face.
  • the other face 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 to 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) in the form of an ellipse 13.
  • This allows a only to form a nucleus with greater efficiency, but also to allow to have a contact surface between the coating and the confinement which is not limited by the thickness of the confinement (the contact is done with the inner surface of the containment, and not with an edge of the containment).
  • the invention is not limited to this example of production.
  • the number of initiators can be different.
  • the coating can 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)

Abstract

The penetrator (1) has a containment (5) forming approximately a tube according to an axis (4). The containment is accommodated in a parallel cylindrical axis to a greater side of a rectangle based on the length of the containment and length of a small side of the rectangle. A coating (6) closes an opening of the containment when the penetrator formed by an explosion moving in one direction is parallel to the axis of the tube.

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 charges placed in munitions acting in overview of their goal.

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 formed or "Explosively Formed Penetrators (EFP)" in the ango-saxon literature) are explosive heads, with a coating set in motion by the detonation of an explosive charge disposed in a confinement (also known as an envelope) generally cylindrical metal. The coating is deformed so as to constitute a core, projected at a speed of the order of 2000 m / s towards a target. Such charges are used to form the military heads of ammunition. They are also used in the industry (boreholes, mining ...). The general principles of operation of these charges are described in W.P.'s "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.Armored targets are particularly vulnerable to level of their upper parts, that is why we seek to define core-generating charge ammunition 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.FR2771166 patent describes for example a munition which acts in overflight of the objective and which includes a military head whose direction of action is substantially normal to the axis of the munition (that is to say substantially the flight direction of the ammunition). The ammunition includes a charge core generator whose confinement is substantially shaped cylindrical. 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 in relation to the containment does not allow to exploit in a manner effective all the explosive present in the confinement. This is particularly the case explosive on the periphery of the coating, the detonation of which does not contribute at the projection of the nucleus. In addition, the formed nucleus can break in several pieces.

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 generating charge of core, 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 not 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 charge whose volume is not limited by this template. The invention makes it possible, by increasing the amount of explosive and the mass of the coating, to obtain a nucleus more efficient than that of an axisymmetric core generating charge housed similarly in the ammunition. In addition, this geometry allows to facilitate the realization of loads whose characteristics respect the planes of symmetry of the load, in particular for realizations of loads by casting or compression. The gap left between confinement and the ammunition structure can be used to house modules electronic or as a passage of electric 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 minus 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 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 symmetry planes of the coating.

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

D'autres caractéristiques et avantages de l'invention apparaítront 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:
  • Figures 1 to 3 show an example of an ammunition comprising a load according to the invention respectively in a side view, a view from above, and a radial view;
  • Figure 4 shows a horizontal section of the confinement;
  • Figures 5 to 8 show an example of a load according to the invention respectively in an isometric perspective view, an axial view (axis of the ammunition), a view on it, and a side view;
  • Figure 9 shows 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.Reference is now made to FIGS. example of 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 presents a direction of action 4 substantially vertical, ie perpendicular with 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.Referring now to FIG. 4, the load 1 comprises a containment 5 in which is placed an explosive charge (no represent). Containment may be made of steel, aluminum or plastic material for example. The load further comprises at least one initiator (not visible in this figure) intended to initiate the detonation of the explosive charge. Containment 5 has an opening closed by 6. The coating is intended to form a core during the detonation of the explosive charge. The coating can 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 on one side of the ammunition, inside the profile outside the ammunition and flush with the latter in its most exterior.

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 present 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 an 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 ammunition 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 small side of the rectangle are such that confinement can be housed in a cylindrical tube (ammunition section) with 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 the effective volume of the load for a given ammunition caliber, the length of the small 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).Reference is now made to FIGS. 5 to 8. 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 located opposite the coating 6, symmetrically with respect to the symmetry planes 10, 11 of the coating. The coating may itself be symmetrical with respect to plans 10, 11. Thus, the explosive charge detonates by forming a wave symmetrical with respect to the plans 10, 11. The coating being itself symmetrical with respect to the planes 10, 11, we obtain a nucleus 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.Referring now to FIG. Advantageously, the coating has at least one concave face. The other face 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 to 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) in the form of an ellipse 13. This allows a only to form a nucleus with greater efficiency, but also to allow to have a contact surface between the coating and the confinement which is not limited by the thickness of the confinement (the contact is done with the inner surface of the containment, and not with an edge of the containment).

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 example of production. The number of initiators can be different. The coating can have a variable thickness.

Claims (10)

Charge génératrice de noyau (1) comprenant un confinement (5), un revêtement (6) destiné à former un noyau, caractérisée en ce que : le confinement forme sensiblement un tube selon un axe (4), le tube étant ouvert à une extrémité, le tube possédant une section perpendiculaire à l'axe inscrite dans un rectangle (7), les deux côtés (8, 9) du rectangle ayant des longueurs différentes, la longueur du confinement selon l'axe et la longueur du petit côté (9) du rectangle étant telles que le confinement puisse être logé dans un cylindre d'axe parallèle au grand côté (8) 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 (4) du tube. Core generating charge (1) comprising a confinement (5), a coating (6) for forming a core, characterized in that : the confinement substantially forms a tube along an axis (4), the tube being open at one end, the tube having a section perpendicular to the axis inscribed in 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 in a cylinder of axis parallel to the long side (8) 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 (4) of the tube. Charge génératrice de noyau selon la revendication 1, caractérisée en ce que la longueur du petit côté (9) du rectangle est sensiblement égale à la longueur du confinement selon l'axe du tubeCore generating charge according to claim 1, characterized in that the length of the short side (9) of the rectangle is substantially equal to the length of the confinement along the axis of the tube Charge génératrice de noyau selon l'une quelconque des revendications précédentes, caractérisée en ce que la section du tube est sensiblement une ellipse.Core generating charge according to one of the preceding claims, characterized in that the section of the tube is substantially an ellipse. Charge génératrice de noyau selon l'une quelconque des revendications précédentes, caractérisée en ce que la forme du revêtement possède deux plans de symétrie (10, 11) perpendiculaires dont l'intersection forme l'axe (4) du tube.Core generating charge according to any one of the preceding claims, characterized in that the shape of the coating has two perpendicular planes of symmetry (10, 11) whose intersection forms the axis (4) of the tube. Charge génératrice de noyau selon l'une quelconque des revendications précédentes, caractérisée en ce que le revêtement (6) a au moins une face (15)concave.Core generating charge according to one of the preceding claims, characterized in that the coating (6) has at least one concave face (15). Charge génératrice de noyau selon la revendication 5, caractérisée en ce que la face concave du revêtement est sphérique ou torique ou ellipsoïdale. Core generating charge according to claim 5, characterized in that the concave surface of the coating is spherical or toroidal or ellipsoidal. Charge génératrice de noyau selon l'une quelconque des revendications 5 ou 6, caractérisée en ce que la valeur moyenne du rayon de courbure (14) de la face concave du revêtement est égale au double de la longueur du tube selon son axe à plus ou moins 20% près.Core generating charge according to any one of claims 5 or 6, characterized in that the average value of the radius of curvature (14) of the concave face of the coating is twice the length of the tube along its axis plus or less than 20%. Charge génératrice de noyau selon l'une quelconque des revendications précédentes, caractérisée en qu'elle comprend des initiateurs (12) placés sur la surface du confinement en regard du revêtement.Core generating 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 coating. Charge génératrice de noyau selon la revendication 4, caractérisée en ce qu'elle comprend des initiateurs (12) répartis de manière symétrique par rapport aux plans de symétrie (10, 11) du revêtement.Core generating charge according to claim 4, characterized in that it comprises initiators (12) distributed symmetrically with respect to the symmetry planes (10, 11) of the coating. Charge génératrice de noyau selon la revendication 9, caractérisée en ce que les initiateurs sont au nombre de quatre.Core generating charge according to claim 9, characterized in that the initiators are four in number.
EP20030104269 2002-12-13 2003-11-19 Hollow charge Expired - Lifetime 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 true EP1429107A1 (en) 2004-06-16
EP1429107B1 EP1429107B1 (en) 2010-01-20

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

Citations (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
US4374495A (en) * 1977-09-17 1983-02-22 Thomanek Franz R Warhead for antitank missiles featuring a shaped charge
US5801323A (en) * 1995-07-07 1998-09-01 Giat Industries Shaped-charged warhead and munition equipped with such a warhead
FR2771166A1 (en) 1997-11-20 1999-05-21 Giat Ind Sa PROJECTILE WITH A RADIAL ACTION DIRECTION
WO2002021070A1 (en) * 2000-09-04 2002-03-14 Saab Bofors Dynamics Ab Method for speed compensation of a shaped charge jet, and missile

Patent Citations (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
US4374495A (en) * 1977-09-17 1983-02-22 Thomanek Franz R Warhead for antitank missiles featuring a shaped charge
US5801323A (en) * 1995-07-07 1998-09-01 Giat Industries Shaped-charged warhead and munition equipped with such a warhead
FR2771166A1 (en) 1997-11-20 1999-05-21 Giat Ind Sa PROJECTILE WITH A RADIAL ACTION DIRECTION
WO2002021070A1 (en) * 2000-09-04 2002-03-14 Saab Bofors Dynamics Ab Method for speed compensation of a shaped charge jet, and missile

Also Published As

Publication number Publication date
AU2003264628B2 (en) 2009-12-03
AU2003264628A1 (en) 2004-07-01
DE60331038D1 (en) 2010-03-11
FR2848657A1 (en) 2004-06-18
FR2848657B1 (en) 2005-01-28
EP1429107B1 (en) 2010-01-20

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