EP1769217B1 - Shield and a projectile, such as a shell, which is equipped with one such shiled - Google Patents

Shield and a projectile, such as a shell, which is equipped with one such shiled Download PDF

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Publication number
EP1769217B1
EP1769217B1 EP05763943A EP05763943A EP1769217B1 EP 1769217 B1 EP1769217 B1 EP 1769217B1 EP 05763943 A EP05763943 A EP 05763943A EP 05763943 A EP05763943 A EP 05763943A EP 1769217 B1 EP1769217 B1 EP 1769217B1
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EP
European Patent Office
Prior art keywords
duct
shield
projectile according
cap
wall
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EP05763943A
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German (de)
French (fr)
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EP1769217A1 (en
Inventor
Jean-François Denis
Bruno Charles
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TDA Armements SAS
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TDA Armements SAS
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Publication of EP1769217A1 publication Critical patent/EP1769217A1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B30/00Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/08Ordnance projectiles or missiles, e.g. shells
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42CAMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00Details of fuzes
    • F42C19/02Fuze bodies; Fuze housings

Definitions

  • the present invention relates to a projectile equipped with a shield wall including a projectile with pyrotechnic charge, located between the pyrotechnic part and the control and control part. It applies in particular for shells or rockets whose denotation is programmed a given delay after impact on the target.
  • the shell or rocket has at least two parts, a control and control part located at the front, followed by a part comprising the pyrotechnic charge.
  • the control and control part includes proximity sensors that determine the distance to the target and a control unit that activates the pyrotechnic charge depending in particular on the distance of the shell to the target. The firing of the charge is caused by an electrical signal from the command and control part of the shell.
  • Delay circuits may be located in the pyrotechnic portion in particular for delaying the initiation of firing of the load following the activation signal provided by the control portion. This delay is for example a few thousandths to a few tens of thousandths of a second.
  • An electric wire more generally a flex or a strand son, must therefore pass from the control and control part to the pyrotechnic part to allow the passage of control signals, for example to initiate the firing.
  • These two parts are separated by a wall comprising a shield partition.
  • the pyrotechnic part and in particular its firing system must not be destroyed by the spray debris caused by the impact of the shell head, in particularly its control and control part, on the target, for example a concrete wall.
  • the shield partition is placed at the level of what is called the eye of the shell.
  • the aforementioned flex or son strand to cross the wall separating the two parts must actually cross the shield partition.
  • a hole is necessary to let the wire pass.
  • the different materials constituting the target are sprayed and rush into the hole.
  • These debris then deteriorate the mechanisms and electronic modules located behind the shield partition, in the pyrotechnic part in particular.
  • Solutions are known to prevent the passage of spray materials into the hole.
  • baffles are made to slow or even stop the crossing of these materials.
  • Another solution is to make small slots just let the wires.
  • the thickness of the partition may be for example of the order of 10 to 20 millimeters. Performing baffles or thin slits in such thicknesses is complicated. This results in particular an additional cost of production of parts.
  • the conduit has at least one cylindrical portion and one conical portion, the conical portion being oriented forward.
  • the engaged part of the plug is for example of conical shape,
  • the conical portion of the duct and the conical portion of the plug have substantially the same angle.
  • the conduit comprises a first cylindrical portion and a second cylindrical portion of larger section, the cylindrical portion of larger section being oriented forward.
  • the engaged part of the cap is for example of cylindrical shape of section greater than the section of the first cylindrical portion of the conduit to close the latter when the plug comes into contact with it.
  • the conduit and the plug are for example symmetrical of revolution.
  • the zone of mechanical weakness is for example an area of the support portion of reduced thickness.
  • a part of the projectile comprises for example a pyrotechnic charge and the other part placed at the front of the projectile comprises for example a control and control system, the front of the shield-partition being oriented towards this part of command and control.
  • the main advantages of the invention are that it makes it possible to produce robust shield-wall parts, that it improves the reliability of a projectile equipped with such a shield-partition and that it is simple to implement.
  • FIG. 1a presents, by a simple diagram, the situation of a shield partition in a shell 1.
  • the shell comprises at least two parts 2, 3.
  • a first part 2, located at the front of the shell, comprises by example the command and control system of the shell.
  • the second part 3 includes its pyrotechnic charge.
  • a wall 4 separates for example the two parts.
  • the wall 4 is itself closed by the shield-wall 5 located substantially in its center, at what is generally called the eye of the shell.
  • the wires carrying the control signals pass through the shield wall 5.
  • the spray materials When the shell is impacted on a target, the spray materials must not pass through the hole of the shield-shield for the passage of the wires, in particular to protect the firing mechanisms and the electronic modules located in the pyrotechnic part 2.
  • These electronic modules are for example programmed to create a firing delay in response to an activation signal from the control part 1 and control.
  • This delay is for example defined so that the shell detonates for example after partially penetrating the target.
  • This target can be, for example, a concrete wall, a hard or loose floor or a metal structure.
  • the shield-partition 5 will be called shield.
  • Figure 1b illustrates the position of a shield in a rocket.
  • the rocket 1 also has two parts 2, 3.
  • the first part 2, located at the front of the rocket, comprises for example the control and control system of the rocket.
  • the second part 3 comprises in particular its pyrotechnic charge.
  • a wall 4 separates the two parts.
  • the wall 4 is closed by the shield 5 located substantially at its center.
  • the wires carrying the control signals pass through the shield partition 5.
  • FIG. 2 illustrates, in sectional view, an exemplary possible embodiment of a shield according to the invention.
  • the shield 5 is for example symmetrical of revolution, the section of Figure 2 passes through the axis of symmetry 20 of the shield.
  • the shield 5 has a partition 21, thick enough to withstand the pressure caused by the impact of the shell on a target.
  • the wall 21 made of metal, for example, is pierced with a duct 22 in which a plug 23 is engaged.
  • the duct 22 is located in the center of the wall 21.
  • the duct is composed of a cylindrical portion 221 and a conical portion 222.
  • the cylindrical portion 221 of the conduit is oriented towards the pyrotechnic charge, the conical portion 222 facing the control and control system, it is ie oriented towards the front of the shell.
  • the plug 23 has a conical portion 231 facing the conical portion 222 of the conduit. A gap is maintained between the conduit wall and the plug 23 so as to leave a passage 25 for an electrical wire 24, a son strand, a wire braid or a flex.
  • this space is intended to pass links 24 necessary for the transmission of signals between the front of the shield, oriented for example towards the control and control system of a shell, and the rear of the shield, oriented by example to the pyrotechnic charge of a shell.
  • the cap 23 comprises for example a plate 232 mechanically integral with this conical portion.
  • the plate 232 rests for example on the wall 21 of the shield.
  • a hollow matching the shape of the plate is for example made in the wall 21 in which is placed the plate 232, the conical portion 231 of the cap being engaged in the conduit 22.
  • the plate 232 forms for example a flat cylinder of a kind that the plug 23 as a whole forms a symmetrical component of revolution, centered on the axis of symmetry 20 of the shield 5.
  • the plate is for example forcibly engaged in the wall, or welded, for holding in the closed position or in near-closure, leaving just the passage space 25.
  • the plate comprises for example a slot 233 to let the 24. More generally an opening 233 in the tray made opposite the opening or passage space 25, provides a complete opening.
  • the conical portion 231 of the cap 23 and the plate 232 are mechanically secured, so they can in particular form a single piece. However, their mechanical connection comprises, for example, a zone of weakness 26 so that the conical portion 231 can separate from the plate 232.
  • This zone of mechanical fragility 26 is for example constituted by a part of the plate of lesser thickness. By way of example, it may be formed of a circular zone 26 of small thickness, this zone connecting the plate 232 to the conical portion 231, all nevertheless forming a single piece. In the event of pressure exerted on the plug, the conical portion can then be detached from the plate 232 by shearing.
  • the wall 21 is for example extended on each of its sides by a hollow portion 211, 212, forming for example a hollow cylinder.
  • a not shown thread may be provided for, for example, screw the shield on a support, or more particularly in the eye of the shell.
  • FIG. 2 represents a shield according to the invention before impacting on a target of the projectile which comprises it.
  • the shield closes a passage separating two parts of the projectile, for example the control and control part 2 of the pyrotechnic part 3 of a shell, while allowing a wire, a group of wires or any other type to pass through. of links 24.
  • Figure 3 shows the state of the shield after impact of the projectile, or shell, on a target, for example on a concrete wall.
  • the front of the shield and more particularly the plug 23 is subjected to a pressure 31 such that the conical portion 231 separates from its support, for example the plate 232, the separation is made at the zone 26 of mechanical fragility by shearing.
  • the conical portion 231 of the stopper is then pushed onto the flared face of the duct, its conical opening, so that the conical portion 231 encloses the space 25 through which the connection 24 passes.
  • the angle of the cone 231 of the shield is substantially the same as that of the opening cone of the led 22 so as to optimize the closure.
  • the closure of the space 25 causes the cut or deterioration of the link 24, however it does not matter for the rest of the operational phase. Indeed, the electrical modules located at the rear of the shield 5 remain intact because protected especially of the spray materials due to the impact on the target. In particular delays programmed in the electronic modules are still active. A firing delay can then be created from an activation signal transmitted by the link 24 passing through the shield, in accordance with the programmed instructions.
  • FIG. 4 shows another possible embodiment of a shield according to the invention.
  • the plug 23 and the duct 22 have different shapes from those of FIGS. 2 and 3.
  • the duct 22 always comprises two parts, a first cylindrical portion 221, as in the case of FIGS. facing the back of the shield.
  • a second portion 222 'in which the cap 23 is engaged has a wall 41 disposed facing the wall of the cap so as to reserve a space between the wall of the duct and the wall of the cap.
  • This space 25 is provided for the passage of a link, this connection may be an electrical wire or a group of son in the form of strand, braid or flex.
  • the portion 222 'of the conduit which receives the plug 23 forms a cylinder.
  • the duct 22 thus comprises two cylindrical parts of different sections.
  • the plug 23 is engaged in the cylinder of larger section.
  • the plug 23 is for example always composed of a support 232 bearing on the wall 21 of the shield.
  • the support 232 which may take the form of a cylindrical plate is mechanically connected to another portion 231 'of the plug 23 via a zone of mechanical weakness, as in the previous embodiment.
  • This other part 231 'of the plug is that which is engaged in the conduit 22, it has for example a shape cylindrical adapted to the cylindrical wall of the duct.
  • This portion 231 'of the plug has a section at least greater than the section of the first cylindrical portion 221 of the conduit.
  • the support 232 of the cap is supported on the wall 21 of the shield so that a space 25 is reserved between the cap and the bottom 41 of the cylinder of the conduit.
  • the cylindrical portion 231 'of the cap disengages from the support 232 and abuts on the bottom 41 of the cylinder of the conduit 22.
  • the front and the rear of the shield are then well closed to each other.
  • the support 232 of the cap 23 also comprises for example a slot 233 for passing the connection.
  • the cylinders 231 ', 232 forming the cap are for example symmetrical of revolution. It is possible to provide embodiments where the two cylinders are not symmetrical of revolution.
  • the cylinder 222 'of the conduit in which the plug is engaged will accordingly have a suitable shape, and the section of the plug will be large enough to close the first cylinder 221.
  • FIG. 5 shows another embodiment of the plug 23 used in a shield according to the invention.
  • the portion 231 of the plug engaged in the conduit 22 has a conical shape. It is possible to provide another embodiment where this part would have another shape, for example of the flat cylinder type as shown in FIG. 4.
  • the conical portion 231 is always connected to the support 232 by a zone of mechanical weakness 26 '. Nevertheless, in this embodiment, this zone 26 'is a rod of small section.
  • the cone 231, the rod 26 'and the support 232 form for example a single mechanical part.
  • the support may, for example, be supported on the partition by pins 51.
  • Figure 6 shows in a sectional view and in perspective the position of a plug, as shown in Figure 5, in a shield according to the invention.
  • the wall 21 is extended, for example, to form a well 61 which opens out onto the duct 22.
  • the support 232 of the plug 23 is then placed at the bottom of the well, opposite the duct 22.
  • the rod 26 crosses the well.
  • the support 232 of the cap has a shape that does not close the well 61, so as to allow the one or more connections 24 and secondly to allow the pressure causing the rupture of the rod 26 '.
  • conduit 22 of the shield has an inner surface substantially parallel to a surface of the plug 23 engaged in the conduit, with a space 25 reserved between these two surfaces . Under the effect of an external pressure both surfaces come into contact to close the shield.
  • the invention is economical and simple to implement.
  • the component parts of a shield according to the invention can be symmetrical of revolution without particular bore. There are at most two bores to predict.
  • a bore for conduit 22 is simple to make. It is the same to make the slot 22 of the plug support for passing the links. This embodiment also makes it possible to obtain robust parts.
  • a projectile at most equipped with such a shield is therefore more reliable and also less expensive to achieve.
  • the shield separates the pyrotechnic part 3 from the projectile or shell from the control and control part 2.
  • a link 24, for example electrical, transmits signals between the two parts.

Description

La présente invention concerne un projectile équipé d'une cloison-bouclier notamment d'un projectile à charge pyrotechnique, située entre la partie pyrotechnique et la partie de commande et de contrôle. Elle s'applique en particulier pour des obus ou des fusées dont la dénotation est programmée un retard donné après impact sur la cible.The present invention relates to a projectile equipped with a shield wall including a projectile with pyrotechnic charge, located between the pyrotechnic part and the control and control part. It applies in particular for shells or rockets whose denotation is programmed a given delay after impact on the target.

Un tel projectile, qui forme une base pour le préambule de la revendication 1, est décrit dans le document EP 0426627 A .Such a projectile, which forms a basis for the preamble of claim 1, is described in the document EP 0426627 A .

Pour détruire ou traverser une paroi en béton par exemple à l'aide d'un obus, il est préférable de retarder la détonation de l'obus après l'impact de celui-ci sur la paroi. Il en est de même lorsque l'obus doit pénétrer un sol dur ou meuble ou encore une structure métallique par exemple. Selon une approche simple, l'obus ou la fusée comporte au moins deux parties, une partie de commande et de contrôle située à l'avant, suivie d'une partie comportant la charge pyrotechnique. La partie de commande et de contrôle comporte notamment des capteurs de proximité qui déterminent la distance à la cible ainsi qu'une unité de commande qui active la charge pyrotechnique en fonction notamment de la distance de l'obus à la cible. La mise à feu de la charge est provoquée par un signal électrique issu de la partie de commande et de contrôle de l'obus. Des circuits de temporisation peuvent être situés dans la partie pyrotechnique en particulier pour retarder le déclenchement de la mise à feu de la charge à la suite du signal d'activation fournie par la partie de commande. Ce retard est par exemple de quelques millièmes à quelques dizaines de millièmes de secondes. Un fil électrique, plus généralement un flex ou un toron de fils, doit donc passer de la partie de commande et de contrôle à la partie pyrotechnique pour permettre le passage des signaux de commande, par exemple pour initier la mise à feu. Ces deux parties sont notamment séparées par une paroi comportant une cloison-bouclier. Lors de l'impact de l'obus sur une cible, la partie pyrotechnique et notamment son système de mise à feu ne doivent en effet pas être détruits par les débris de pulvérisation provoqués par l'impact de la tête de l'obus, en particulier sa partie de commande et de contrôle, sur la cible, par exemple une paroi en béton. La cloison-bouclier est placée au niveau de ce que l'on appelle l'oeil de l'obus.To destroy or cross a concrete wall for example with a shell, it is best to delay the detonation of the shell after the impact of the shell on the wall. It is the same when the shell must penetrate hard or loose ground or a metal structure for example. According to a simple approach, the shell or rocket has at least two parts, a control and control part located at the front, followed by a part comprising the pyrotechnic charge. The control and control part includes proximity sensors that determine the distance to the target and a control unit that activates the pyrotechnic charge depending in particular on the distance of the shell to the target. The firing of the charge is caused by an electrical signal from the command and control part of the shell. Delay circuits may be located in the pyrotechnic portion in particular for delaying the initiation of firing of the load following the activation signal provided by the control portion. This delay is for example a few thousandths to a few tens of thousandths of a second. An electric wire, more generally a flex or a strand son, must therefore pass from the control and control part to the pyrotechnic part to allow the passage of control signals, for example to initiate the firing. These two parts are separated by a wall comprising a shield partition. During the impact of the shell on a target, the pyrotechnic part and in particular its firing system must not be destroyed by the spray debris caused by the impact of the shell head, in particularly its control and control part, on the target, for example a concrete wall. The shield partition is placed at the level of what is called the eye of the shell.

Or le flex ou le toron de fils précité pour traverser la paroi séparant les deux parties doit en fait traverser la cloison-bouclier. Un trou est donc nécessaire pour laisser passer le fil. En l'absence de précaution, sous la pression du choc les différents matériaux constituant la cible se pulvérisent et s'engouffrent dans le trou. Ces débris détériorent alors les mécanismes et les modules électroniques situés en arrière de la cloison-bouclier, dans la partie pyrotechnique notamment.
Des solutions sont connues pour empêcher le passage des matériaux de pulvérisation à l'intérieur du trou. En particulier des chicanes sont réalisées pour freiner, voire stopper, la traversée de ces matériaux. Une autre solution consiste à réaliser de petites fentes laissant juste passer les fils. Cependant de telles solutions sont complexes à mettre en oeuvre. En effet, l'épaisseur de la cloison peut être par exemple de l'ordre de 10 à 20 millimètres. Réaliser des chicanes ou de fines fentes dans de telles épaisseurs est compliqué. Il en résulte notamment un surcoût de production de pièces.
Or the aforementioned flex or son strand to cross the wall separating the two parts must actually cross the shield partition. A hole is necessary to let the wire pass. In the absence of precaution, under the pressure of the shock the different materials constituting the target are sprayed and rush into the hole. These debris then deteriorate the mechanisms and electronic modules located behind the shield partition, in the pyrotechnic part in particular.
Solutions are known to prevent the passage of spray materials into the hole. In particular, baffles are made to slow or even stop the crossing of these materials. Another solution is to make small slots just let the wires. However, such solutions are complex to implement. Indeed, the thickness of the partition may be for example of the order of 10 to 20 millimeters. Performing baffles or thin slits in such thicknesses is complicated. This results in particular an additional cost of production of parts.

Un but de l'invention est notamment de pallier les inconvénients précités. A cet effet, l'invention a pour objet un projectile comportant au moins deux parties séparées par une cloison-bouclier, la cloison-bouclier comportant au moins :

  • une paroi percée d'un conduit, caractérisé en ce que la cloison-bouclier comporte de plus ou moins:
  • un bouchon composé d'une partie support et d'une partie engagée dans le conduit laissant un espace entre elle-même et la paroi du conduit, les deux parties étant reliées par une zone de fragilité mécanique ;
la partie support prenant appui sur la paroi, à l'avant, de sorte que la partie engagée se sépare de la partie support sous l'effet d'une pression externe pour venir en contact avec la paroi interne du conduit et fermer l'espace une liaison de transmission de signaux traversant l'espace laissé entre la paroi du conduit et le bouchon.An object of the invention is in particular to overcome the aforementioned drawbacks. For this purpose, the subject of the invention is a projectile comprising at least two parts separated by a shield-partition, the shield-partition comprising at least:
  • a wall pierced with a duct, characterized in that the shield partition comprises more or less:
  • a plug composed of a support part and a part engaged in the conduit leaving a space between itself and the wall of the conduit, the two parts being connected by a zone of mechanical weakness;
the support part bearing on the wall, at the front, so that the engaged part separates from the support part under the effect of an external pressure to come into contact with the inner wall of the duct and close the space a signal transmission link traversing the space left between the wall of the conduit and the plug.

De préférence, une ouverture est réalisée dans le support en regard de l'espace.
Dans un mode de réalisation, le conduit comporte au moins une partie cylindrique et une partie conique, la partie conique étant orientée vers l'avant. La partie engagée du bouchon est par exemple de forme conique,
Avantageusement, la partie conique du conduit et la partie conique du bouchon ont sensiblement le même angle.
Dans un autre mode de réalisation possible, le conduit comporte une première partie cylindrique et une deuxième partie cylindrique de plus grande section, la partie cylindrique de plus grande section étant orientée vers l'avant. La partie engagée du bouchon est par exemple de forme cylindrique de section supérieure à la section de la première partie cylindrique du conduit pour fermer cette dernière lorsque le bouchon vient en contact avec elle.
Le conduit et le bouchon sont par exemple à symétrie de révolution.
La zone de fragilité mécanique est par exemple une zone de la partie support d'épaisseur réduite.
Preferably, an opening is made in the support facing the space.
In one embodiment, the conduit has at least one cylindrical portion and one conical portion, the conical portion being oriented forward. The engaged part of the plug is for example of conical shape,
Advantageously, the conical portion of the duct and the conical portion of the plug have substantially the same angle.
In another possible embodiment, the conduit comprises a first cylindrical portion and a second cylindrical portion of larger section, the cylindrical portion of larger section being oriented forward. The engaged part of the cap is for example of cylindrical shape of section greater than the section of the first cylindrical portion of the conduit to close the latter when the plug comes into contact with it.
The conduit and the plug are for example symmetrical of revolution.
The zone of mechanical weakness is for example an area of the support portion of reduced thickness.

Dans un mode de réalisation, une partie du projectile comporte par exemple une charge pyrotechnique et l'autre partie placée à l'avant du projectile comporte par exemple un système de commande et de contrôle, l'avant de la cloison-bouclier étant orienté vers cette partie de commande et de contrôle.In one embodiment, a part of the projectile comprises for example a pyrotechnic charge and the other part placed at the front of the projectile comprises for example a control and control system, the front of the shield-partition being oriented towards this part of command and control.

L'invention a pour principaux avantages qu'elle permet de réaliser des pièces de cloison-bouclier robuste, qu'elle améliore la fiabilité d'un projectile équipé d'une telle cloison-bouclier et qu'elle est simple à mettre en oeuvre.The main advantages of the invention are that it makes it possible to produce robust shield-wall parts, that it improves the reliability of a projectile equipped with such a shield-partition and that it is simple to implement.

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

  • la figure 1 a, la situation d'une cloison bouclier dans un projectile, par exemple un obus ;
  • la figure 1b, la situation d'une cloison bouclier dans autre type de projectile, par exemple une fusée ;
  • la figure 2, un premier mode de réalisation possible d'une cloison-bouclier selon l'invention ;
  • la figure 3, l'état de cette cloison-bouclier après impact ;
  • la figure 4, un autre mode de réalisation possible d'une cloison-bouclier selon l'invention ;
  • la figure 5, un autre exemple de réalisation d'un bouchon utilisé dans une cloison-bouclier selon l'invention ;
  • la figure 6, la position du bouchon précédent dans une cloison-bouclier selon l'invention.
Other characteristics and advantages of the invention will become apparent with the aid of the following description made with reference to appended drawings which represent:
  • Figure 1a, the situation of a shield partition in a projectile, for example a shell;
  • Figure 1b, the situation of a shield partition in another type of projectile, for example a rocket;
  • FIG. 2, a first possible embodiment of a shield partition according to the invention;
  • Figure 3, the state of this shield partition after impact;
  • FIG. 4, another possible embodiment of a shield partition according to the invention;
  • Figure 5, another embodiment of a plug used in a shield wall according to the invention;
  • Figure 6, the position of the previous cap in a shield wall according to the invention.

La figure 1a présente par un simple schéma la situation d'une cloison-bouclier dans un obus 1. L'obus comporte au moins deux parties 2, 3. Une première partie 2, située à l'avant de l'obus, comporte par exemple le système de commande et de contrôle de l'obus. La deuxième partie 3 comporte notamment sa charge pyrotechnique. Une paroi 4 sépare par exemple les deux parties. La paroi 4 est elle-même fermée par la cloison-bouclier 5 située sensiblement en son centre, au niveau de ce qu'il est convenu généralement d'appeler l'oeil de l'obus. Les fils véhiculant les signaux de commande traversent la cloison-bouclier 5. Lors de l'impact de l'obus sur une cible, les matériaux de pulvérisation ne doivent pas franchir le trou de la cloison-bouclier destiné au passage des fils, en particulier pour protéger les mécanismes de mise à feu ainsi que les modules électroniques situés dans la partie pyrotechnique 2. Ces modules électroniques sont par exemple programmer pour créer un retard de mise à feu en réponse à un signal d'activation issu de la partie 1 de commande et de contrôle. Ce retard est par exemple défini de façon à ce que l'obus détonne par exemple après avoir pénétré en partie la cible. Cette cible peut être par notamment une paroi en béton, un sol dur ou meuble ou encore une structure métallique. Par la suite la cloison-bouclier 5 sera appelée bouclier.FIG. 1a presents, by a simple diagram, the situation of a shield partition in a shell 1. The shell comprises at least two parts 2, 3. A first part 2, located at the front of the shell, comprises by example the command and control system of the shell. The second part 3 includes its pyrotechnic charge. A wall 4 separates for example the two parts. The wall 4 is itself closed by the shield-wall 5 located substantially in its center, at what is generally called the eye of the shell. The wires carrying the control signals pass through the shield wall 5. When the shell is impacted on a target, the spray materials must not pass through the hole of the shield-shield for the passage of the wires, in particular to protect the firing mechanisms and the electronic modules located in the pyrotechnic part 2. These electronic modules are for example programmed to create a firing delay in response to an activation signal from the control part 1 and control. This delay is for example defined so that the shell detonates for example after partially penetrating the target. This target can be, for example, a concrete wall, a hard or loose floor or a metal structure. Subsequently the shield-partition 5 will be called shield.

La figure 1b illustre la position d'un bouclier dans une fusée. La fusée 1' comporte aussi deux parties 2, 3. La première partie 2, située à l'avant de la fusée, comporte par exemple le système de commande et de contrôle de la fusée. La deuxième partie 3 comporte en particulier sa charge pyrotechnique. Une paroi 4 sépare les deux parties. La paroi 4 est fermée par le bouclier 5 située sensiblement en son centre. Les fils véhiculant les signaux de commande traversent la cloison-bouclier 5. Pour la suite de la description il sera fait référence à un obus comme type de projectile, cependant le bouclier décrit peut être utilisé pour une fusée ou pour d'autres types de projectiles.Figure 1b illustrates the position of a shield in a rocket. The rocket 1 'also has two parts 2, 3. The first part 2, located at the front of the rocket, comprises for example the control and control system of the rocket. The second part 3 comprises in particular its pyrotechnic charge. A wall 4 separates the two parts. The wall 4 is closed by the shield 5 located substantially at its center. The wires carrying the control signals pass through the shield partition 5. For the rest of the description reference will be made to a shell as a projectile type, however the described shield can be used for a rocket or for other types of projectiles.

La figure 2 illustre par une vue en coupe un exemple de réalisation possible d'un bouclier selon l'invention. Le bouclier 5 étant par exemple à symétrie de révolution, la coupe de la figure 2 passe par l'axe de symétrie 20 du bouclier. Le bouclier 5 comporte une cloison 21, suffisamment épaisse pour supporter la pressions provoquée lors de l'impact de l'obus sur une cible. La paroi 21 par exemple en métal est percée d'un conduit 22 dans lequel est engagé un bouchon 23. Le conduit 22 est situé au centre de la paroi 21. Le conduit est composé d'une partie cylindrique 221 et d'une partie conique 222. En situation opérationnelle, lorsque le bouclier 5 est par exemple placé dans un obus 1, la partie cylindrique 221 du conduit est orientée vers la charge pyrotechnique, la partie conique 222 étant en regard du système de commande et de contrôle, c'est-à-dire orientée vers l'avant de l'obus. De préférence le bouchon 23 comporte une partie conique 231 en regard de la partie conique 222 du conduit. Un espace est conservé entre la paroi du conduit et le bouchon 23 de façon à laisser un passage 25 pour un fil électrique 24, un toron de fils, une tresse de fil ou encore un flex. Plus généralement cet espace est destiné à laisser passer des liaisons 24 nécessaires pour la transmission de signaux entre l'avant du bouclier, orienté par exemple vers le système de commande et de contrôle d'un obus, et l'arrière du bouclier, orienté par exemple vers la charge pyrotechnique d'un obus.
Outre sa partie conique 231, le bouchon 23 comporte par exemple un plateau 232 solidaire mécaniquement de cette partie conique. Le plateau 232 repose par exemple sur la paroi 21 du bouclier. A cet effet un creux épousant la forme du plateau est par exemple réalisé dans la paroi 21 dans lequel est placé le plateau 232, la partie conique 231 du bouchon étant engagée dans le conduit 22. Le plateau 232 forme par exemple un cylindre plat de sorte que le bouchon 23 dans son ensemble forme un composant à symétrie de révolution, centré sur l'axe de symétrie 20 du bouclier 5. Le plateau est par exemple engagé à force dans la paroi, ou soudé, pour le maintien en position de fermeture ou en quasi-fermeture, laissant juste l'espace de passage 25. Le plateau comporte par exemple une fente 233 pour laisser passer les liaisons 24. Plus généralement une ouverture 233 dans le plateau réalisée en regard de l'espace d'ouverture ou de passage 25, permet d'obtenir une ouverture complète.
La partie conique 231 du bouchon 23 et le plateau 232 sont solidaires mécaniquement, ils peuvent donc notamment former une pièce unique. Cependant leur lien mécanique comporte par exemple une zone de fragilité 26 de façon à ce que la partie conique 231 puisse se séparer du plateau 232. Cette zone de fragilité mécanique 26 est par exemple constituée d'une partie du plateau de moindre épaisseur. A titre d'exemple elle peut être formée d'une zone circulaire 26 de faible épaisseur, cette zone reliant le plateau 232 à la partie conique 231, le tout formant néanmoins une seule pièce. En cas de pression exercée sur le bouchon la partie conique peut alors se détacher du plateau 232 par cisaillement.
La paroi 21 est par exemple prolongée sur chacun de ses côtés par une partie creuse 211, 212, formant par exemple un cylindre creux. Un filetage non représenté peut être prévu pour, par exemple, visser le bouclier sur un support, ou plus particulièrement dans l'oeil de l'obus. Selon l'épaisseur de ce support ou en raison d'autres contraintes mécaniques ou opérationnelles éventuelles, les prolongations 211, 212 de la paroi 21 du bouclier peuvent être plus ou moins longues.
Le plateau 232 du bouchon 23 peut être remplacé par tout autre support mécanique solidaire de la partie conique 231 et susceptible de s'en séparer. La figure 2 représente un bouclier selon l'invention avant impact sur une cible du projectile qui le comporte. Dans cet état, le bouclier ferme un passage séparant deux parties du projectile, par exemple la partie de commande et de contrôle 2 de la partie pyrotechnique 3 d'un obus, tout en laissant passer un fil, un groupe de fils ou tout autre type de liaisons 24.
FIG. 2 illustrates, in sectional view, an exemplary possible embodiment of a shield according to the invention. The shield 5 is for example symmetrical of revolution, the section of Figure 2 passes through the axis of symmetry 20 of the shield. The shield 5 has a partition 21, thick enough to withstand the pressure caused by the impact of the shell on a target. The wall 21 made of metal, for example, is pierced with a duct 22 in which a plug 23 is engaged. The duct 22 is located in the center of the wall 21. The duct is composed of a cylindrical portion 221 and a conical portion 222. In operational situation, when the shield 5 is for example placed in a shell 1, the cylindrical portion 221 of the conduit is oriented towards the pyrotechnic charge, the conical portion 222 facing the control and control system, it is ie oriented towards the front of the shell. Preferably the plug 23 has a conical portion 231 facing the conical portion 222 of the conduit. A gap is maintained between the conduit wall and the plug 23 so as to leave a passage 25 for an electrical wire 24, a son strand, a wire braid or a flex. More generally, this space is intended to pass links 24 necessary for the transmission of signals between the front of the shield, oriented for example towards the control and control system of a shell, and the rear of the shield, oriented by example to the pyrotechnic charge of a shell.
In addition to its conical portion 231, the cap 23 comprises for example a plate 232 mechanically integral with this conical portion. The plate 232 rests for example on the wall 21 of the shield. For this purpose a hollow matching the shape of the plate is for example made in the wall 21 in which is placed the plate 232, the conical portion 231 of the cap being engaged in the conduit 22. The plate 232 forms for example a flat cylinder of a kind that the plug 23 as a whole forms a symmetrical component of revolution, centered on the axis of symmetry 20 of the shield 5. The plate is for example forcibly engaged in the wall, or welded, for holding in the closed position or in near-closure, leaving just the passage space 25. The plate comprises for example a slot 233 to let the 24. More generally an opening 233 in the tray made opposite the opening or passage space 25, provides a complete opening.
The conical portion 231 of the cap 23 and the plate 232 are mechanically secured, so they can in particular form a single piece. However, their mechanical connection comprises, for example, a zone of weakness 26 so that the conical portion 231 can separate from the plate 232. This zone of mechanical fragility 26 is for example constituted by a part of the plate of lesser thickness. By way of example, it may be formed of a circular zone 26 of small thickness, this zone connecting the plate 232 to the conical portion 231, all nevertheless forming a single piece. In the event of pressure exerted on the plug, the conical portion can then be detached from the plate 232 by shearing.
The wall 21 is for example extended on each of its sides by a hollow portion 211, 212, forming for example a hollow cylinder. A not shown thread may be provided for, for example, screw the shield on a support, or more particularly in the eye of the shell. Depending on the thickness of this support or because of other possible mechanical or operational constraints, the extensions 211, 212 of the wall 21 of the shield may be more or less long.
The plate 232 of the cap 23 may be replaced by any other mechanical support integral with the conical portion 231 and capable of separating therefrom. FIG. 2 represents a shield according to the invention before impacting on a target of the projectile which comprises it. In this state, the shield closes a passage separating two parts of the projectile, for example the control and control part 2 of the pyrotechnic part 3 of a shell, while allowing a wire, a group of wires or any other type to pass through. of links 24.

La figure 3 représente l'état du bouclier après impact du projectile, ou de l'obus, sur une cible, par exemple sur une paroi en béton. Sous l'effet de l'impact un projectile sur la cible, l'avant du bouclier et plus particulièrement le bouchon 23 est soumis à une pression 31 telle que la partie conique 231 se sépare de son support, par exemple le plateau 232, la séparation se fait au niveau de la zone 26 de fragilité mécanique par cisaillement. La partie conique 231 du bouchon est alors poussée sur la face évasée du conduit, en l'occurrence son ouverture conique, de sorte que la partie conique 231 vient fermer l'espace 25 par lequel passait notamment la liaison 24. De préférence l'angle du cône 231 du bouclier est sensiblement le même que celui du cône d'ouverture du conduit 22 de façon à optimiser la fermeture. La fermeture de l'espace 25 entraîne la coupure ou la détérioration de la liaison 24, néanmoins cela n'a pas d'importance pour la suite de la phase opérationnelle. En effet les modules électriques situés à l'arrière du bouclier 5 restent intacts car protégés notamment des matériaux de pulvérisation dus à l'impact sur la cible. En particulier des retards programmés dans les modules électroniques sont toujours actifs. Un retard à la mise à feu peut alors être créé à partir d'un signal d'activation transmis par la liaison 24 traversant le bouclier, conformément aux instructions programmées.Figure 3 shows the state of the shield after impact of the projectile, or shell, on a target, for example on a concrete wall. Under the effect of the impact a projectile on the target, the front of the shield and more particularly the plug 23 is subjected to a pressure 31 such that the conical portion 231 separates from its support, for example the plate 232, the separation is made at the zone 26 of mechanical fragility by shearing. The conical portion 231 of the stopper is then pushed onto the flared face of the duct, its conical opening, so that the conical portion 231 encloses the space 25 through which the connection 24 passes. Preferably the angle of the cone 231 of the shield is substantially the same as that of the opening cone of the led 22 so as to optimize the closure. The closure of the space 25 causes the cut or deterioration of the link 24, however it does not matter for the rest of the operational phase. Indeed, the electrical modules located at the rear of the shield 5 remain intact because protected especially of the spray materials due to the impact on the target. In particular delays programmed in the electronic modules are still active. A firing delay can then be created from an activation signal transmitted by the link 24 passing through the shield, in accordance with the programmed instructions.

La figure 4 présente un autre mode de réalisation possible d'un bouclier selon l'invention. En particulier dans ce mode de réalisation le bouchon 23 et le conduit 22 ont des formes différentes de celles des figures 2 et 3. Le conduit 22 comporte toujours deux parties, une première partie cylindrique 221, comme dans le cas des figures 2 et 3 est orientée vers l'arrière du bouclier. Une deuxième partie 222' dans laquelle est engagé le bouchon 23 comporte une paroi 41 disposée en regard de la paroi du bouchon de façon à réserver un espace entre cette paroi du conduit et la paroi du bouchon. Cet espace 25, comme dans l'exemple de réalisation précédent, est prévu pour le passage d'une liaison, cette liaison pouvant être un fil électrique ou un groupe de fils sous forme de toron, de tresse ou de flex. Dans l'exemple de réalisation de la figure 4, la partie 222' du conduit qui accueille le bouchon 23 forme un cylindre. Le conduit 22 comporte ainsi deux parties cylindriques de sections différentes. Le bouchon 23 est engagé dans le cylindre de plus grande section.
Le bouchon 23 est par exemple toujours composé d'un support 232 prenant appui sur la paroi 21 du bouclier. Le support 232, qui peut prendre la forme d'un plateau cylindrique est relié mécaniquement à une autre partie 231' du bouchon 23 par l'intermédiaire d'une zone de fragilité mécanique, comme dans l'exemple de réalisation précédente. Cette autre partie 231' du bouchon est celle qui est engagée dans le conduit 22, elle a par exemple une forme cylindrique adaptée à la paroi cylindrique du conduit. Cette partie 231' du bouchon a une section au moins supérieure à la section de la première partie cylindrique 221 du conduit. Le support 232 du bouchon prend appui sur la paroi 21 du bouclier de telle façon qu'un espace 25 soit réservé entre le bouchon et le fond 41 du cylindre du conduit. Lors d'un impact du projectile sur une cible par exemple, la partie cylindrique 231' du bouchon se désolidarise du support 232 et vient en butée sur le fond 41 du cylindre du conduit 22. L'avant et l'arrière du bouclier sont alors bien fermés l'un par rapport à l'autre. Le support 232 du bouchon 23 comporte encore par exemple une fente 233 pour laisser passer la liaison. Les cylindres 231', 232 formant le bouchon sont par exemple à symétrie de révolution. Il est possible de prévoir des modes de réalisation où les deux cylindres ne sont pas à symétrie de révolution. Le cylindre 222' du conduit dans lequel est engagé le bouchon aura en conséquence une forme adaptée, et la section du bouchon sera suffisamment grande pour fermer le premier cylindre 221.
FIG. 4 shows another possible embodiment of a shield according to the invention. In particular in this embodiment the plug 23 and the duct 22 have different shapes from those of FIGS. 2 and 3. The duct 22 always comprises two parts, a first cylindrical portion 221, as in the case of FIGS. facing the back of the shield. A second portion 222 'in which the cap 23 is engaged has a wall 41 disposed facing the wall of the cap so as to reserve a space between the wall of the duct and the wall of the cap. This space 25, as in the previous embodiment, is provided for the passage of a link, this connection may be an electrical wire or a group of son in the form of strand, braid or flex. In the embodiment of Figure 4, the portion 222 'of the conduit which receives the plug 23 forms a cylinder. The duct 22 thus comprises two cylindrical parts of different sections. The plug 23 is engaged in the cylinder of larger section.
The plug 23 is for example always composed of a support 232 bearing on the wall 21 of the shield. The support 232, which may take the form of a cylindrical plate is mechanically connected to another portion 231 'of the plug 23 via a zone of mechanical weakness, as in the previous embodiment. This other part 231 'of the plug is that which is engaged in the conduit 22, it has for example a shape cylindrical adapted to the cylindrical wall of the duct. This portion 231 'of the plug has a section at least greater than the section of the first cylindrical portion 221 of the conduit. The support 232 of the cap is supported on the wall 21 of the shield so that a space 25 is reserved between the cap and the bottom 41 of the cylinder of the conduit. During an impact of the projectile on a target for example, the cylindrical portion 231 'of the cap disengages from the support 232 and abuts on the bottom 41 of the cylinder of the conduit 22. The front and the rear of the shield are then well closed to each other. The support 232 of the cap 23 also comprises for example a slot 233 for passing the connection. The cylinders 231 ', 232 forming the cap are for example symmetrical of revolution. It is possible to provide embodiments where the two cylinders are not symmetrical of revolution. The cylinder 222 'of the conduit in which the plug is engaged will accordingly have a suitable shape, and the section of the plug will be large enough to close the first cylinder 221.

La figure 5 présente un autre exemple de réalisation du bouchon 23 utilisé dans un bouclier selon l'invention. Dans cet exemple la partie 231 du bouchon engagée dans le conduit 22 a une forme conique. Il est possible de prévoir un autre exemple de réalisation où cette partie aurait une autre forme, par exemple du type cylindre plat comme illustré par la figure 4.
Donc dans cet exemple de réalisation de la figure 4, la partie conique 231 est toujours reliée au support 232 par une zone de fragilité mécanique 26'. Néanmoins dans cet exemple de réalisation cette zone 26' est une tige de faible section. Le cône 231, la tige 26' et le support 232 forment par exemple une seule pièce mécanique. Le support peut par exemple être maintenu en appui sur la cloison par des goupilles 51.
FIG. 5 shows another embodiment of the plug 23 used in a shield according to the invention. In this example the portion 231 of the plug engaged in the conduit 22 has a conical shape. It is possible to provide another embodiment where this part would have another shape, for example of the flat cylinder type as shown in FIG. 4.
Thus in this embodiment of Figure 4, the conical portion 231 is always connected to the support 232 by a zone of mechanical weakness 26 '. Nevertheless, in this embodiment, this zone 26 'is a rod of small section. The cone 231, the rod 26 'and the support 232 form for example a single mechanical part. The support may, for example, be supported on the partition by pins 51.

La figure 6 montre par une vue en coupe et en perspective la position d'un bouchon, tel qu'illustré par la figure 5, dans un bouclier selon l'invention. Au niveau du conduit 22, la paroi 21 est par exemple prolongée pour former un puit 61 qui débouche sur ce conduit 22. Le support 232 du bouchon 23 est alors placé au fond du puit, à l'opposé du conduit 22. La tige 26' traverse le puit. Lors d'un impact du projectile sur une cible, la tige 26' se casse sous l'effet de la pression exercée sur la partie conique 231 du bouchon, les débris de pulvérisation passant de chaque côté du support 232. La pression exercée sur l'arrière de la partie conique 231 entraîne la rupture de la tige 26'. Le support 232 du bouchon a une forme qui ne ferme pas le puit 61, de façon d'une part à laisser passer la ou les liaisons 24 et d'autre part pour permettre à la pression entraînant la rupture de la tige 26'.Figure 6 shows in a sectional view and in perspective the position of a plug, as shown in Figure 5, in a shield according to the invention. At the level of the duct 22, the wall 21 is extended, for example, to form a well 61 which opens out onto the duct 22. The support 232 of the plug 23 is then placed at the bottom of the well, opposite the duct 22. The rod 26 crosses the well. During an impact of the projectile on a target, the rod 26 'breaks under the effect of the pressure exerted on the conical portion 231 of the plug, the spraying debris passing on each side of the support 232. The pressure exerted on the rear of the conical portion 231 causes the rod 26 'to rupture. The support 232 of the cap has a shape that does not close the well 61, so as to allow the one or more connections 24 and secondly to allow the pressure causing the rupture of the rod 26 '.

D'autres modes de réalisation d'un bouclier selon l'invention sont encore possibles pour que le conduit 22 du bouclier comporte une surface interne sensiblement parallèle à une surface du bouchon 23 engagée dans le conduit, avec un espace 25 réservé entre ces deux surfaces. Sous l'effet d'une pression extérieure les deux surfaces entrent en contact pour fermer le bouclier. L'invention est économique et simple à mettre en oeuvre. En particulier les pièces composant un bouclier selon l'invention peuvent être à symétrie de révolution sans alésage particulier. Il y a tout au plus deux alésages à prévoir. Un alésage pour le conduit 22 est simple à réaliser. Il en est de même pour réaliser la fente 22 du support du bouchon destinée à laisser passer les liaisons. Ce mode de réalisation permet par ailleurs d'obtenir des pièces robustes.Other embodiments of a shield according to the invention are still possible for the conduit 22 of the shield has an inner surface substantially parallel to a surface of the plug 23 engaged in the conduit, with a space 25 reserved between these two surfaces . Under the effect of an external pressure both surfaces come into contact to close the shield. The invention is economical and simple to implement. In particular the component parts of a shield according to the invention can be symmetrical of revolution without particular bore. There are at most two bores to predict. A bore for conduit 22 is simple to make. It is the same to make the slot 22 of the plug support for passing the links. This embodiment also makes it possible to obtain robust parts.

Un projectile au plus équipé d'un tel bouclier est donc plus fiable et aussi moins coûteux à réaliser. Comme présenté relativement à la figure 1, le bouclier sépare la partie pyrotechnique 3 du projectile ou de l'obus de la partie de commande et de contrôle 2. Une liaison 24, par exemple électrique, transmet des signaux entre les deux parties.A projectile at most equipped with such a shield is therefore more reliable and also less expensive to achieve. As shown with reference to FIG. 1, the shield separates the pyrotechnic part 3 from the projectile or shell from the control and control part 2. A link 24, for example electrical, transmits signals between the two parts.

Claims (15)

  1. Projectile, comprising at least two portions (2, 3) separated by a bulkhead shield, the bulkhead shield comprising at least:
    - one wall (21) pierced by a duct (22), characterized in that the bulkhead shield further comprises at least:
    - one end-cap (23) consisting of a support portion (232) and a portion (231) engaged in the duct (22) leaving a space (25) between itself and the wall of the duct (22), the two portions being connected by a mechanical weakness zone (26);
    the support portion (232) pressing on the wall (21), at the front, so that the engaged portion (231) separates from the support portion (232) under the effect of an external pressure to come into contact with the inner wall of the duct (22) and close the space (25), a connection (24) for transmitting signals passing through the space (25) left between the wall of the duct (22) and the end-cap (23).
  2. Projectile according to Claim 1, characterized in that an opening (233) is made in the support (232) in line with the space (25).
  3. Projectile according to either one of the preceding claims, characterized in that the duct (22) comprises at least one cylindrical portion (221) and one conical portion (222), the conical portion (222) being oriented toward the front.
  4. Projectile according to Claim 3, characterized in that the engaged portion (231) of the end-cap (23) is cone-shaped.
  5. Projectile according to Claim 4, characterized in that the conical portion (222) of the duct and the conical portion (231) of the end-cap have substantially the same angle.
  6. Projectile according to either one of Claims 1 or 2, characterized in that the duct (22) comprises a first cylindrical portion (221) and a second cylindrical portion (222') of larger cross section, the cylindrical portion (222') of larger cross section being oriented toward the front.
  7. Projectile according to Claim 6, characterized in that the engaged portion (231') of the end-cap (23) is of cylindrical shape with a larger cross section than the cross section of the first cylindrical portion (221) of the duct in order to close the latter when the end-cap (23) comes into contact with it.
  8. Projectile according to any one of the preceding claims, characterized in that the duct (22) and the end-cap (23) are axi-symmetric.
  9. Projectile according to any one of the preceding claims, characterized in that the duct (22) and the end-cap (23) are centered on the axis of symmetry (20) of the bulkhead shield.
  10. Projectile according to any one of the preceding claims, characterized in that the mechanical weakness zone is a thinner zone (26) of the support portion (232).
  11. Projectile according to any one of the preceding claims, characterized in that the mechanical weakness zone is a rod (26') connecting the portion (231) engaged in the duct (22) to the support portion (232).
  12. Projectile according to Claim 11, characterized in that one portion (3) comprises a pyrotechnic charge and the other portion (2) placed at the front of the projectile comprises a command and control system, the front of the bulkhead shield being oriented toward this command and control portion (2).
  13. Projectile according to either one of Claims 11 or 12, characterized in that it is a rocket.
  14. Projectile according to either one of Claims 11 or 12, characterized in that it is a shell.
  15. Projectile according to Claim 14, characterized in that the bulkhead shield is placed at the eye of the shell.
EP05763943A 2004-06-25 2005-06-24 Shield and a projectile, such as a shell, which is equipped with one such shiled Active EP1769217B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0407009A FR2872274B1 (en) 2004-06-25 2004-06-25 SHIELD-SHIELD AND PROJECTILE, IN PARTICULAR AN OBUS, EQUIPPED WITH SUCH A CLOISON
PCT/EP2005/052968 WO2006000575A1 (en) 2004-06-25 2005-06-24 Shield and a projectile, such as a shell, which is equipped with one such shield

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EP1769217A1 EP1769217A1 (en) 2007-04-04
EP1769217B1 true EP1769217B1 (en) 2008-01-23

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US (1) US7493860B2 (en)
EP (1) EP1769217B1 (en)
DE (1) DE602005004548T2 (en)
FR (1) FR2872274B1 (en)
IL (1) IL180186A (en)
WO (1) WO2006000575A1 (en)
ZA (1) ZA200700522B (en)

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DE102013010256B4 (en) * 2013-06-18 2015-01-15 Junghans Microtec Gmbh Method for sealing a projectile

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DE602005004548D1 (en) 2008-03-13
US20070227392A1 (en) 2007-10-04
IL180186A (en) 2011-11-30
WO2006000575A1 (en) 2006-01-05
FR2872274B1 (en) 2008-09-19
EP1769217A1 (en) 2007-04-04
IL180186A0 (en) 2007-06-03
FR2872274A1 (en) 2005-12-30
US7493860B2 (en) 2009-02-24
ZA200700522B (en) 2008-05-28
DE602005004548T2 (en) 2009-01-29

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