WO1999064812A1 - Countermeasure ammunition - Google Patents

Countermeasure ammunition Download PDF

Info

Publication number
WO1999064812A1
WO1999064812A1 PCT/FR1999/001283 FR9901283W WO9964812A1 WO 1999064812 A1 WO1999064812 A1 WO 1999064812A1 FR 9901283 W FR9901283 W FR 9901283W WO 9964812 A1 WO9964812 A1 WO 9964812A1
Authority
WO
WIPO (PCT)
Prior art keywords
hollow
charges
ammunition according
ammunition
charge
Prior art date
Application number
PCT/FR1999/001283
Other languages
French (fr)
Inventor
Joël FERRON
Jean-Pierre Guillon
Claude Perthuis
Original Assignee
Tda Armements S.A.S.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tda Armements S.A.S. filed Critical Tda Armements S.A.S.
Priority to EP99922246A priority Critical patent/EP1000312B1/en
Priority to DE69911884T priority patent/DE69911884T2/en
Priority to DK99922246T priority patent/DK1000312T3/en
Publication of WO1999064812A1 publication Critical patent/WO1999064812A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
    • B63G7/00—Mine-sweeping; Vessels characterised thereby
    • B63G7/02—Mine-sweeping means, Means for destroying mines
    • 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
    • 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
    • F42B12/16—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 in combination with an additional projectile or charge, acting successively on the target
    • F42B12/18—Hollow charges in tandem arrangement

Definitions

  • the invention relates to the field of countermeasures ammunition, in particular but not exclusively ammunition intended for the destruction or neutralization of weapons containing very insensitive explosives such as underwater mines.
  • Such ammunition can be torpedoes, underwater vehicles, guided or autonomous, ammunition installed directly by deminers or more generally demining systems.
  • SEAFOX An example of such a demining system is known under the designation of SEAFOX.
  • This system consists of a wire-guided underwater vehicle which will be placed near the mine. It carries a hollow charge which through its perforation capacity will, with its jet, cross the mine. This aggression is generally likely to render the mine inoperative. This is a first level of efficiency, but we know that mine hunters want to see the sonar echo of the mine disappear, which means breaking up into small pieces. Such an effect is obtained when the jet of the hollow charge has the capacity during its penetration into the explosive charge of the mine, to create a shock whose energy is sufficient to cause the almost immediate detonation thereof.
  • the object of the present invention is to increase the efficiency of a countermeasure munition at constant volume. It aims in particular:
  • the invention relates to a countermeasure ammunition comprising a lethal system having an axis of attack, characterized in that it comprises at least three hollow charges whose longitudinal axes are concurrent and angularly distributed around the axis of attack, each hollow charge being intended to produce a jet of hollow charge acting concomitantly in an area of a target, the area being defined by the intersection with the target of the cone containing the concurrent axes of the hollow charges and centered on the axis of attack.
  • the invention also relates to the use of ammunition as an underwater vehicle for the destruction of submerged mines.
  • the simultaneous action of the jets of these hollow charges is intended to cause: - a perforation of the structures and envelopes of the target after crossing the medium separating the ammunition from the target at the time of operation, for example the medium can to be water,
  • FIG. 1a shows a sectional view of an ammunition of the underwater vehicle type according to the prior art, equipped with a lethal system with a single hollow charge in the attack position with respect to a moored mine .
  • Figure 1b is a sectional view of the mode of action of the jet of the hollow charge of the ammunition shown in Figure 1a on the explosive of a mine.
  • FIG. 2a and 2b a first embodiment of a multi-charge hollow ammunition according to the invention.
  • Figure 2c a sectional view of the mode of action of the jets of the hollow charges of the ammunition shown in Figures 2a and 2b.
  • FIG. 3a and 3b a second embodiment of a hollow multi-charge munition according to the invention.
  • FIG. 4a and 4b an embodiment of a synchronous pyrotechnic distributor usable for firing the embodiment of Figures 2a and 2b.
  • the ammunition is placed in the attack position in front of a ruddy mine 1.
  • the rut mine 1 is kept immersed in water by a rope 2 attached to a toad or base 3.
  • a shell 4 often made of steel, constitutes the float of the mine and inside, a tank 5 contains the explosive charge 6.
  • the mine also includes detection means 7 connected to a firing device 8.
  • the munition which bears the reference 9 in FIG. 1 a consists of a vehicle 10 and a lethal system in the form of a hollow charge comprising a coating 11, an explosive charge 12, a lateral confinement 13, a safety and ignition system 14.
  • a dead volume 15 is generally necessary for the proper functioning of the hollow charge.
  • the ammunition 9 can operate the shaped charge without being in contact with the mine.
  • the firing of the hollow charge causes, schematically in FIG. 1b, the explosion of the explosive charge 12 which transforms the coating 11 into a jet 16 animated at a speed of several km / s. This speed allows the jet to hydrodynamically pass through the steel walls of the shell 4 and of the reservoir 5 to reach the explosive charge 6.
  • the jet 16 by creating a crater in the explosive charge 6 of the mine 1 generates a shock wave which develops zone 17 under very strong pressure. If the pressure in the zone 17 is high enough over a sufficient area, the criterion V 2 d is satisfied and the explosive charge 6 is detonated, which pulverizes the mine 1.
  • the lethal system is composed of three hollow charges 18a, 18b, 18c equally distributed around the axis of attack (00 ') of the lethal system.
  • These hollow charges are arranged in the directions of three planes at 120 ° and their longitudinal axes X'X, are concurrent forward at a point ⁇ of the axis 00 'whose adjustment is predetermined according to the distance d ammunition attack.
  • the three hollow charges are identical, they are constituted in a similar manner to that shown in FIG. 1a, of a coating 11, of an explosive charge 12, of a confinement 13 and of a system.
  • the coating 11 is for example made of copper, but other types of material such as aluminum or synthetic products (teflon, etc.) or liquid products (water, etc.) are of interest for the application. It is important that the ignition system 19 guarantees good simultaneity of operation of the hollow charges to allow the effects sought by the invention as described.
  • the firing system 19 can be a known electronic device which simultaneously initiates three detonator primers with a projected layer 20.
  • Another embodiment can consist of a pyrotechnic distributor which from a single detonator will simultaneously propagate the detonation towards the hollow charges.
  • Figure 2c shows after the explosion of the shaped charges 18a, 18b, 18c, the interaction of the jets 16 on the mine explosive.
  • Each of the jets develops around the crater which it creates, a zone 17 of overpressure, the zone 17 being defined by the intersection with the target 14 of the cone containing the concurrent axes XX 'of the hollow charges and centered on the axis of attack 00 '.
  • the zones of overpressure by joining together confine each other and create a surface, subjected to a significant pressure, greater than the sum of the three individual surfaces.
  • FIGs 3a and 3b show a second embodiment of the lethal system according to the invention.
  • the hollow charges are placed one behind the other slightly offset in 3 planes at 120 ° and their axes of revolution X'X are concurrent at a point ⁇ , located at the front of the system , whose position is predetermined according to the attack conditions of the munition.
  • the firing system 19 controls the initiator of the detonator primers with projected layers 20 of each hollow charge according to a chronology such that the heads of the jets, preferably homokinetic, simultaneously attack the explosive charge of the mine.
  • the ignition systems 19 of each of the shaped charges can be advantageously replaced by a single firing system produced in the form of the synchronous pyrotechnic distributor shown in FIGS. 4a and 4b.
  • This comprises an input pyrotechnic relay 21 which is placed in communication with each of the explosive charges by relays 22 through conduits 23.
  • the relay 21 is initialized by a primer, the detonation produced propagates through a pyrotechnic network formed by the conduits 23 into which is injected for example an explosive with thermosetting binder.
  • the latter have a length which is determined to maintain symmetry in the paths of the detonation waves and lead to a simultaneous emergence of the detonation at the output of the relays 22.

Abstract

The invention concerns an ammunition comprising a lethal system with driving axis (00'), comprising at least three hollow charges (18a, 18b, 18c) whereof the longitudinal axes (XX') are concurrent and distributed equidistant at an angle about the driving axis (00'). Each hollow charge is designed to produce a jet (16) acting simultaneously in one zone of a target. The zone is defined by the intersection with the target of the cone containing the concurrent axes (XX') of the hollow charges and centred on the driving axis (00'). The invention is applicable to mine hunting.

Description

Munition de contre mesure. Countermeasure ammunition.
L'invention se situe dans le domaine des munitions de contre- mesure, en particulier mais non exclusivement les munitions destinées à la destruction ou la neutralisation d'armes contenant des explosifs très peu sensibles telles que des mines sous-marines. De telles munitions peuvent être des torpilles, des véhicules sous-marins, filoguidés ou autonomes, des munitions installées directement par les démineurs ou plus généralement des systèmes de déminage.The invention relates to the field of countermeasures ammunition, in particular but not exclusively ammunition intended for the destruction or neutralization of weapons containing very insensitive explosives such as underwater mines. Such ammunition can be torpedoes, underwater vehicles, guided or autonomous, ammunition installed directly by deminers or more generally demining systems.
Un exemple de tel système de déminage est connu sous la désignation de SEAFOX. Ce système est constitué d'un véhicule sous-marin filoguidé qui va se placer à proximité de la mine. Il transporte une charge creuse qui par sa capacité de perforation va, avec son jet, traverser la mine. Cette agression est généralement de nature à rendre la mine inopérante. C'est un premier niveau d'efficacité, mais on sait que les chasseurs de mines souhaitent voir disparaître l'écho sonar de la mine, ce qui signifie un éclatement en petits morceaux. Un tel effet est obtenu lorsque le jet de la charge creuse a la capacité lors de sa pénétration dans le chargement explosif de la mine, de créer un choc dont l'énergie est suffisante pour entraîner la détonation quasi-immédiate de celui-ci.An example of such a demining system is known under the designation of SEAFOX. This system consists of a wire-guided underwater vehicle which will be placed near the mine. It carries a hollow charge which through its perforation capacity will, with its jet, cross the mine. This aggression is generally likely to render the mine inoperative. This is a first level of efficiency, but we know that mine hunters want to see the sonar echo of the mine disappear, which means breaking up into small pieces. Such an effect is obtained when the jet of the hollow charge has the capacity during its penetration into the explosive charge of the mine, to create a shock whose energy is sufficient to cause the almost immediate detonation thereof.
On sait que la capacité de ce type de munition à détruire une cible par entraînement en détonation de l'explosif qu'elle contient peut être caractérisée par un critère énergétique V2d, dit de HELD, où V représente la vitesse du jet au contact de l'explosif et d son diamètre. Cette capacité sera atteinte lorsque le critère sera supérieur à une valeur seuil qui dépend notamment de l'explosif de la cible.We know that the capacity of this type of ammunition to destroy a target by detonation training of the explosive it contains can be characterized by an energy criterion V 2 d, called HELD, where V represents the speed of the jet on contact. of the explosive and its diameter. This capacity will be reached when the criterion is greater than a threshold value which depends in particular on the target's explosive.
L'emploi d'explosifs de moins en moins sensibles dans les mines considérées comme cibles, nécessite, pour obtenir leur destruction par détonation d'atteindre des valeurs de critère de plus en plus élevées, ce qui peut s'obtenir en augmentant les valeurs des deux paramètres V et d.The use of explosives less and less sensitive in the mines considered as targets, requires, to obtain their destruction by detonation, to reach higher and higher criteria values, which can be obtained by increasing the values of two parameters V and d.
Il doit être noté ici avant la suite de l'exposé que l'emploi d'une charge creuse unique comme indiqué dans l'art antérieur peut permettre une destruction complète de la cible pour les modèles les plus vulnérables d'entre elles. Toutefois en fonction de l'explosif de chargement de la cible, il ne sera pas possible d'atteindre la valeur seuil du critère, même après optimisation de la charge creuse car pour des raisons physiques la vitesse du jet est limitée et son diamètre est proportionnel au calibre de la charge creuse.It should be noted here before the rest of the presentation that the use of a single hollow charge as indicated in the prior art can allow complete destruction of the target for the most vulnerable models between them. However, depending on the explosive loading the target, it will not be possible to reach the threshold value of the criterion, even after optimization of the hollow charge because for physical reasons the speed of the jet is limited and its diameter is proportional to the rating of the shaped charge.
La présente invention a pour but d'augmenter à volume constant l'efficacité d'une munition de contre-mesure. Elle a pour but en particulier :The object of the present invention is to increase the efficiency of a countermeasure munition at constant volume. It aims in particular:
- soit de réduire le volume consacré à la charge pour un type de cible donné, - soit d'augmenter à volume constant l'agression V2d sur l'explosif de la cible, afin de l'entraîner en détonation, même lorsqu'il est d'un type peu vulnérable.- either to reduce the volume devoted to the charge for a given type of target, - or to increase at constant volume the aggression V 2 d on the target's explosive, in order to cause it to detonate, even when he is of a slightly vulnerable type.
A toutes ces fins, l'invention a pour objet une munition de contre mesure comportant un système létal ayant un axe d'attaque, caractérisé en ce qu'il comporte au moins trois charges creuses dont les axes longitudinaux sont concourants et équirépartis angulairement autour de l'axe d'attaque, chaque charge creuse étant destinée à produire un jet de charge creuse agissant concomitamment dans une zone d'une cible, la zone étant définie par l'intersection avec la cible du cône contenant les axes concourants des charges creuses et centré sur l'axe d'attaque.For all these purposes, the invention relates to a countermeasure ammunition comprising a lethal system having an axis of attack, characterized in that it comprises at least three hollow charges whose longitudinal axes are concurrent and angularly distributed around the axis of attack, each hollow charge being intended to produce a jet of hollow charge acting concomitantly in an area of a target, the area being defined by the intersection with the target of the cone containing the concurrent axes of the hollow charges and centered on the axis of attack.
L'invention a également pour objet une utilisation de la munition comme véhicule sous marin pour la destruction de mines immergées.The invention also relates to the use of ammunition as an underwater vehicle for the destruction of submerged mines.
L'action simultanée des jets de ces charges creuses est destinée à provoquer : - une perforation des structures et enveloppes de la cible après franchissement du milieu séparant la munition de la cible à l'instant du fonctionnement , à titre d'exemple le milieu peut être de l'eau,The simultaneous action of the jets of these hollow charges is intended to cause: - a perforation of the structures and envelopes of the target after crossing the medium separating the ammunition from the target at the time of operation, for example the medium can to be water,
- une agression importante du chargement explosif de la cible du fait de la combinaison des effets des ondes de chocs pendant la pénétration. Ces jets doivent être concourants pour que leurs effets soient cumulatifs sur une grande surface.- a significant attack on the explosive charge of the target due to the combination of the effects of shock waves during penetration. These jets must be concurrent so that their effects are cumulative over a large area.
- la satisfaction du critère V2d pour obtenir la destruction par détonation des explosifs de la cible. Lorsque ces explosifs sont peu vulnérables et par conséquent ont des diamètres critiques importants, l'augmentation du critère par le facteur V ne vaut que si d est supérieur à une valeur minimale fonction de l'explosif. Cette valeur est difficilement atteignable avec une seule charge creuse sans aboutir à un calibre de charge prohibitif.- satisfaction of criterion V 2 d to obtain the destruction by detonation of the target's explosives. When these explosives are not very vulnerable and therefore have large critical diameters, the increase in the criterion by factor V is only valid if d is greater than a minimum value depending on the explosive. This value is difficult to achieve with a single hollow charge without resulting in a prohibitive charge rating.
Ce sont ces effets qui permettent à volume égal de répartir l'énergie sur plus grande surface et de favoriser la détonation des explosifs peu sensibles.These are the effects that allow equal volume to distribute energy over a larger area and promote the detonation of insensitive explosives.
D'autres avantages et particularités de réalisation de l'invention apparaîtront au cours de la description détaillée qui va suivre de plusieurs exemples de réalisation de l'invention. Ces exemples sont décrits en référence aux dessins annexés dans lesquels :Other advantages and particularities of embodiment of the invention will appear during the detailed description which will follow from several examples of embodiment of the invention. These examples are described with reference to the accompanying drawings in which:
- la figure 1 a représente une vue en coupe d'une munition de type véhicule sous marin suivant l'art antérieur, équipé d'un système létal à une seule charge creuse en position d'attaque vis à vis d'une mine à orin.- Figure 1a shows a sectional view of an ammunition of the underwater vehicle type according to the prior art, equipped with a lethal system with a single hollow charge in the attack position with respect to a moored mine .
- la figure 1 b est une vue en coupe, du mode d'action du jet de la charge creuse de la munition représentée à la figure 1 a sur l'explosif d'une mine.- Figure 1b is a sectional view of the mode of action of the jet of the hollow charge of the ammunition shown in Figure 1a on the explosive of a mine.
- les figures 2a et 2b un premier mode de réalisation d'une munition à multi-charges creuses selon l'invention.- Figures 2a and 2b a first embodiment of a multi-charge hollow ammunition according to the invention.
- la figure 2c une vue en coupe du mode d'action des jets des charges creuses de la munition représentée aux figures 2a et 2b.- Figure 2c a sectional view of the mode of action of the jets of the hollow charges of the ammunition shown in Figures 2a and 2b.
- les figures 3a et 3b un deuxième mode de réalisation d'une munition à multi-charges creuses selon l'invention.- Figures 3a and 3b a second embodiment of a hollow multi-charge munition according to the invention.
- les figures 4a et 4b un mode de réalisation d'un distributeur pyrotechnique synchrone utilisable pour la mise à feu du mode de réalisation des figures 2a et 2b.- Figures 4a and 4b an embodiment of a synchronous pyrotechnic distributor usable for firing the embodiment of Figures 2a and 2b.
Dans l'exemple d'utilisation d'une munition sous marine pour la destruction de mines à orin qui est montré à la figure 1 a, la munition est placée en position d'attaque devant une mine à orin 1. La mine à orin 1 est maintenue immergée dans l'eau par un orin 2 fixé à un crapaud ou socle 3. Classiquement une coquille 4, souvent en acier, constitue le flotteur de la mine et à l'intérieur, un réservoir 5 contient le chargement explosif 6. La mine comprend aussi des moyens de détection 7 reliés à un dispositif de mise à feu 8.In the example of using an underwater munition for the destruction of ruddy mines which is shown in FIG. 1 a, the ammunition is placed in the attack position in front of a ruddy mine 1. The rut mine 1 is kept immersed in water by a rope 2 attached to a toad or base 3. Conventionally a shell 4, often made of steel, constitutes the float of the mine and inside, a tank 5 contains the explosive charge 6. The mine also includes detection means 7 connected to a firing device 8.
La munition qui porte la référence 9 sur la figure 1 a se compose d'un véhicule 10 et d'un système létal sous la forme d'une charge creuse comprenant un revêtement 11 , un chargement explosif 12, un confinement latéral 13, un système de sécurité et mise à feu 14. Un volume mort 15 est généralement nécessaire au bon fonctionnement de la charge creuse. Dans certains cas la munition 9 peut faire fonctionner la charge creuse sans être au contact de la mine.The munition which bears the reference 9 in FIG. 1 a consists of a vehicle 10 and a lethal system in the form of a hollow charge comprising a coating 11, an explosive charge 12, a lateral confinement 13, a safety and ignition system 14. A dead volume 15 is generally necessary for the proper functioning of the hollow charge. In some cases the ammunition 9 can operate the shaped charge without being in contact with the mine.
La mise à feu de la charge creuse provoque de la façon schématisée sur la figure 1 b, l'explosion du chargement explosif 12 qui transforme le revêtement 11 en un jet 16 animé d'une vitesse de plusieurs km/s. Cette vitesse permet au jet de traverser hydrodynamiquement les parois d'acier de la coquille 4 et du réservoir 5 pour atteindre le chargement explosif 6. Le jet 16 en créant un cratère dans le chargement explosif 6 de la mine 1 génère une onde de choc qui développe une zone 17 sous très forte pression. Si la pression dans la zone 17 est assez élevée sur une surface suffisante, le critère V2d est satisfait et le chargement explosif 6 se trouve entraîné en détonation ce qui pulvérise la mine 1.The firing of the hollow charge causes, schematically in FIG. 1b, the explosion of the explosive charge 12 which transforms the coating 11 into a jet 16 animated at a speed of several km / s. This speed allows the jet to hydrodynamically pass through the steel walls of the shell 4 and of the reservoir 5 to reach the explosive charge 6. The jet 16 by creating a crater in the explosive charge 6 of the mine 1 generates a shock wave which develops zone 17 under very strong pressure. If the pressure in the zone 17 is high enough over a sufficient area, the criterion V 2 d is satisfied and the explosive charge 6 is detonated, which pulverizes the mine 1.
Suivant un premier mode de réalisation de l'invention qui est représenté aux figures 2a et 2b où les éléments homologues à ceux de la figure 1 a sont représentés avec les mêmes références, le système létal est composé de trois charges creuses 18a, 18b, 18c équiréparties autour de l'axe d'attaque (00') du système létal. Ces charges creuses sont disposées suivant les directions de trois plans à 120° et leurs axes longitudinaux X'X, sont concourants vers l'avant en un point α de l'axe 00' dont le réglage est prédéterminé en fonction de la distance d'attaque de la munition. A titre d'exemple les trois charges creuses sont identiques, elles sont constituées de façon similaire à celle représentée à la figure 1 a, d'un revêtement 11 , d'un chargement explosif 12, d'un confinement 13 et d'un système de mise à feu simultanée 19 des trois charges creuses. Le revêtement 11 est par exemple en cuivre, mais d'autres types de matériaux tels que l'aluminium ou des produits synthétiques (téflon...) ou des produits liquides (eau...) présentent un intérêt pour l'application. Il est important que le système de mise à feu 19 garantisse une bonne simultanéité de fonctionnement des charges creuses pour permettre les effets recherchés par l'invention tels qu'ils sont décrits. A titre d'exemple, le système de mise à feu 19 peut être un dispositif électronique connu qui amorce simultanément trois amorces détonateur à couche projetée 20. Un autre mode de réalisation peut consister en un distributeur pyrotechnique qui à partir d'un détonateur unique va propager simultanément la détonation vers les charges creuses.According to a first embodiment of the invention which is represented in FIGS. 2a and 2b where the elements homologous to those of FIG. 1a are represented with the same references, the lethal system is composed of three hollow charges 18a, 18b, 18c equally distributed around the axis of attack (00 ') of the lethal system. These hollow charges are arranged in the directions of three planes at 120 ° and their longitudinal axes X'X, are concurrent forward at a point α of the axis 00 'whose adjustment is predetermined according to the distance d ammunition attack. For example, the three hollow charges are identical, they are constituted in a similar manner to that shown in FIG. 1a, of a coating 11, of an explosive charge 12, of a confinement 13 and of a system. of simultaneous firing 19 of the three hollow charges. The coating 11 is for example made of copper, but other types of material such as aluminum or synthetic products (teflon, etc.) or liquid products (water, etc.) are of interest for the application. It is important that the ignition system 19 guarantees good simultaneity of operation of the hollow charges to allow the effects sought by the invention as described. By way of example, the firing system 19 can be a known electronic device which simultaneously initiates three detonator primers with a projected layer 20. Another embodiment can consist of a pyrotechnic distributor which from a single detonator will simultaneously propagate the detonation towards the hollow charges.
La figure 2c montre après l'explosion des charges creuses 18a, 18b, 18c, I 'interaction des jets 16 sur l'explosif de la mine. Chacun des jets développe autour du cratère qu'il crée, une zone 17 de surpression, la zone 17 étant définie par l'intersection avec la cible 14 du cône contenant les axes concourants XX' des charges creuses et centré sur l'axe d'attaque 00'. Les zones de surpression en se rejoignant se confinent mutuellement et crée une surface, soumise à une pression importante, supérieure à la somme des trois surfaces individuelles. Comme la vitesse d'un jet de charge creuse est en première approximation indépendante du calibre, il apparaît que le critère V2d sera plus facilement satisfait avec cette organisation de munition pour un volume plus faible et une quantité d'explosif bien moindre ce qui facilite largement la logistique au niveau des stockages des munitions, notamment dans les soutes des chasseurs de mines.Figure 2c shows after the explosion of the shaped charges 18a, 18b, 18c, the interaction of the jets 16 on the mine explosive. Each of the jets develops around the crater which it creates, a zone 17 of overpressure, the zone 17 being defined by the intersection with the target 14 of the cone containing the concurrent axes XX 'of the hollow charges and centered on the axis of attack 00 '. The zones of overpressure by joining together confine each other and create a surface, subjected to a significant pressure, greater than the sum of the three individual surfaces. As the speed of a hollow charge jet is a first approximation independent of the caliber, it appears that the criterion V 2 d will be more easily satisfied with this organization of ammunition for a lower volume and a much lower quantity of explosive which greatly facilitates logistics in terms of ammunition storage, especially in the holds of mine hunters.
Les figures 3a et 3b, où les éléments homologues à ceux des figures 2a et 2b sont représentés avec les mêmes références, représentent un deuxième mode de réalisation du système létal selon l'invention. Pour réduire l'encombrement en calibre du système, les charges creuses sont placées les unes derrière les autres légèrement décalées dans 3 plans à 120° et leurs axes de révolution X'X sont concourants en un point α, situé à l'avant du système, dont la position est prédéterminée en fonction des conditions d'attaque de la munition. Pour obtenir une convergence spatiotemporelle des jets, le système de mise à feu 19 pilote l'initiateur des amorces détonateurs à couches projetées 20 de chaque charge creuse suivant une chronologie telle que les têtes des jets, de préférence homocinétique, agresse simultanément le chargement explosif de la mine.Figures 3a and 3b, where elements homologous to those of Figures 2a and 2b are shown with the same references, show a second embodiment of the lethal system according to the invention. To reduce the size of the system, the hollow charges are placed one behind the other slightly offset in 3 planes at 120 ° and their axes of revolution X'X are concurrent at a point α, located at the front of the system , whose position is predetermined according to the attack conditions of the munition. To obtain a spatiotemporal convergence of the jets, the firing system 19 controls the initiator of the detonator primers with projected layers 20 of each hollow charge according to a chronology such that the heads of the jets, preferably homokinetic, simultaneously attack the explosive charge of the mine.
Naturellement la réalisation du système létal selon l'invention n'est pas limitée à la seule mise en oeuvre de trois charges creuses et il va de soi que cette mise en oeuvre peut aussi être effectuée avec un nombre N supérieur à trois de charges équiréparties autour de l'axe d'attaque. Il est à noter qu'un nombre de charges N=2 ne permet pas la création d'une zone de confinement également répartie autour du point d'attaque de la mine.Naturally, the realization of the lethal system according to the invention is not limited to the sole use of three hollow charges and it goes without saying that this implementation can also be carried out with a number N greater than three of charges equally distributed around of the axis of attack. It should be noted that a number of charges N = 2 does not allow the creation of a containment zone also distributed around the point of attack of the mine.
Suivant encore un autre mode de réalisation de l'invention, les systèmes de mise à feu 19 de chacune des charges creuses peuvent être avantageusement remplacés par un système de mise à feu unique réalisé sous la forme du distributeur pyrotechnique synchrone représenté aux figures 4a et 4b. Celui-ci comporte un relais pyrotechnique d'entrée 21 qui est mis en communication avec chacun des chargements explosifs par des relais 22 au travers de conduits 23. Lorsqu'avec ce dispositif le relais 21 est initialisé par une amorce, la détonation produite se propage à travers un réseau pyrotechnique formé par les conduits 23 dans lesquels est injecté par exemple un explosif à liant thermodurcissable. Ces derniers ont une longueur qui est déterminée pour conserver une symétrie des trajets des ondes de détonation et aboutir à une émergence simultanée de la détonation en sortie des relais 22.According to yet another embodiment of the invention, the ignition systems 19 of each of the shaped charges can be advantageously replaced by a single firing system produced in the form of the synchronous pyrotechnic distributor shown in FIGS. 4a and 4b. This comprises an input pyrotechnic relay 21 which is placed in communication with each of the explosive charges by relays 22 through conduits 23. When with this device the relay 21 is initialized by a primer, the detonation produced propagates through a pyrotechnic network formed by the conduits 23 into which is injected for example an explosive with thermosetting binder. The latter have a length which is determined to maintain symmetry in the paths of the detonation waves and lead to a simultaneous emergence of the detonation at the output of the relays 22.
Suivant ce même principe, il est aussi possible de réaliser un distributeur pyrotechnique séquentiel dont le réseau de conduits 23 est dissymétrique pour être adapté au mode de réalisation des figures 3a et 3b, afin de respecter la chronologie nécessaire à son fonctionnement.According to this same principle, it is also possible to produce a sequential pyrotechnic distributor whose network of conduits 23 is asymmetrical to be adapted to the embodiment of FIGS. 3a and 3b, in order to respect the chronology necessary for its operation.
Enfin il est également possible sans sortir du cadre de l'invention de réaliser des munitions constituées d'un nombre entier de paquets placés les uns derrière les autres légèrement décalés multiple de au moins trois charges creuses pour réaliser N zones d'agression de la cible afin d'élargir la surface d'efficacité de la munition et ainsi compenser d'éventuelles erreurs de positionnement de celle-ci. La multiplication des axes d'attaque X'X sera alors d'autant plus intéressante que le pointage est incertain.Finally, it is also possible without departing from the scope of the invention to produce ammunition consisting of a whole number of packets placed one behind the other slightly offset multiple of at least three hollow charges to produce N zones of aggression on the target in order to widen the area of effectiveness of the ammunition and thus compensate for possible positioning errors thereof. The multiplication of the axes of attack X'X will then be all the more interesting as the pointing is uncertain.
On pourra également, lorsque la munition est destinée à travailler à grande distance d'attaque et pour éviter de consommer les jets des charges creuses dans l'eau, adapter devant le système létal soit une charge creuse dont le jet cratérise l'eau en formant un tunnel pour le passage des jets du système létal, soit de la même manière une charge explosive qui crée une bulle entre le système létal et la mine. It will also be possible, when the ammunition is intended to work at a long attack distance and to avoid consuming the jets of hollow charges in the water, adapting before the lethal system is a hollow charge whose jet craters the water by forming a tunnel for the passage of the lethal system jets, in the same way an explosive charge which creates a bubble between the lethal system and the mine.

Claims

REVENDICATIONS
1 - Munition de contre mesure comportant un système létal composé par plusieurs charges creuses réparties autour d'un axe d'attaque (00') caractérisé en ce que les charges creuses (18a , 18b , 18c) ont des axes longitudinaux (XX') concourants et équirépartis angulairement autour de l'axe d'attaque (00'), chaque charge creuse étant destinée à produire un jet de charge creuse (16) agissant concomitamment dans une zone (17) d'une cible (14) avec les autres charges creuses, la zone (17) étant définie par l'intersection avec la cible (14) du cône contenant les axes concourants (XX') des charges creuses et centré sur l'axe d'attaque (00').1 - Countermeasure ammunition comprising a lethal system composed of several hollow charges distributed around an axis of attack (00 ') characterized in that the hollow charges (18a, 18b, 18c) have longitudinal axes (XX') concurrently and evenly distributed angularly around the axis of attack (00 '), each hollow charge being intended to produce a jet of hollow charge (16) acting concomitantly in a zone (17) of a target (14) with the others shaped charges, the area (17) being defined by the intersection with the target (14) of the cone containing the concurrent axes (XX ') of the shaped charges and centered on the axis of attack (00').
2 - Munition selon la revendication 1 caractérisée en ce que le système létal comprend un nombre entier N de paquets d'au moins trois charges creuses (18a, 18b, 18c) pour former N zones d'agression de la cible (14).2 - Ammunition according to claim 1 characterized in that the lethal system comprises an integer number N of packets of at least three hollow charges (18a, 18b, 18c) to form N attack zones of the target (14).
3 - Munition selon la revendication 1 caractérisée en ce que les charges creuses (18a, 18b, 18c) sont au nombre de trois et sont disposées suivant les directions de trois plans à 120°.3 - Ammunition according to claim 1 characterized in that the hollow charges (18a, 18b, 18c) are three in number and are arranged in the directions of three planes at 120 °.
4 - Munition selon la revendication 1 caractérisée en ce que les charges creuses (18a, 18b, 18c) sont placées les une derrière les autres, légèrement décalées.4 - Ammunition according to claim 1 characterized in that the hollow charges (18a, 18b, 18c) are placed one behind the other, slightly offset.
5- Munition selon la revendication 2 caractérisée en ce que les paquets sont placés les uns derrière les autres légèrement décalés.5- Ammunition according to claim 2 characterized in that the packages are placed one behind the other slightly offset.
6 -Munition selon l'une quelconque des revendications 1 à 3 caractérisée en ce que la mise à feu (19) des charges creuses (18a, 18b,6 - Ammunition according to any one of claims 1 to 3 characterized in that the ignition (19) of the hollow charges (18a, 18b,
18c) est assurée par un dispositif synchrone comportant une amorce détonateur à couche projetée par charge creuse.18c) is ensured by a synchronous device comprising a detonator primer with a layer projected by a hollow charge.
7 - Munition selon l'une quelconque des revendications 1 à 4 caractérisée en ce que la mise à feu (19) des charges creuses (18a,18b, 18c) est assurée par un distributeur pyrotechnique (21 , 22, 23) initié par une seule amorce.7 - Ammunition according to any one of claims 1 to 4 characterized in that the ignition (19) of the hollow charges (18a, 18b, 18c) is provided by a pyrotechnic distributor (21, 22, 23) initiated by a single primer.
8 - Munition selon l'une quelconque des revendications 1 à 5 caractérisée en ce que la mise à feu des charges creuses (18a, 18b, 18c) est assurée par un dispositif pyrotechnique (19) qui assure une chronologie compensant les écarts de trajet des jets. 9 - Munition selon les revendications 1 à 8 caractérisée en ce que les charges creuses ont un revêtement (11) en métal ou en matériau synthétique ou liquide.8 - Ammunition according to any one of claims 1 to 5 characterized in that the ignition of the hollow charges (18a, 18b, 18c) is ensured by a pyrotechnic device (19) which ensures a chronology compensating for the path deviations of the jets. 9 - Ammunition according to claims 1 to 8 characterized in that the hollow charges have a coating (11) of metal or synthetic or liquid material.
10 - Munition selon l'une quelconque des revendications 1 à 9 caractérisée en ce qu'elle comprend une charge creuse additionnelle placée devant le système létal.10 - Ammunition according to any one of claims 1 to 9 characterized in that it comprises an additional hollow charge placed in front of the lethal system.
11 - Munition selon l'une quelconque des revendications 1 à 8 caractérisée en ce qu'elle comprend une charge explosive placée devant le système létal. 12 - Utilisation de la munition selon l'une quelconque des revendications 1 à 11 comme véhicule sous marin pour la destruction de mines. 11 - Ammunition according to any one of claims 1 to 8 characterized in that it comprises an explosive charge placed in front of the lethal system. 12 - Use of the ammunition according to any one of claims 1 to 11 as an underwater vehicle for the destruction of mines.
PCT/FR1999/001283 1998-06-09 1999-06-01 Countermeasure ammunition WO1999064812A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP99922246A EP1000312B1 (en) 1998-06-09 1999-06-01 Countermeasure ammunition
DE69911884T DE69911884T2 (en) 1998-06-09 1999-06-01 AMMUNITION FOR COUNTERMEASURES
DK99922246T DK1000312T3 (en) 1998-06-09 1999-06-01 Countermeasure ammunition

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9807241A FR2779514B1 (en) 1998-06-09 1998-06-09 COUNTER-MEASURE AMMUNITION
FR98/07241 1998-06-09

Publications (1)

Publication Number Publication Date
WO1999064812A1 true WO1999064812A1 (en) 1999-12-16

Family

ID=9527183

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1999/001283 WO1999064812A1 (en) 1998-06-09 1999-06-01 Countermeasure ammunition

Country Status (6)

Country Link
EP (1) EP1000312B1 (en)
DE (1) DE69911884T2 (en)
DK (1) DK1000312T3 (en)
ES (1) ES2209435T3 (en)
FR (1) FR2779514B1 (en)
WO (1) WO1999064812A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6540175B1 (en) * 2001-12-03 2003-04-01 Lockheed Martin Corporation System for clearing buried and surface mines
DE102010051491A1 (en) * 2010-11-15 2012-05-16 Atlas Elektronik Gmbh Underwater vehicle and underwater system with an underwater vehicle
DE102018214824A1 (en) * 2018-08-31 2020-03-05 Atlas Elektronik Gmbh Clearance device and method for neutralizing a weapon under water
DE102019213944A1 (en) 2019-09-12 2021-03-18 Atlas Elektronik Gmbh Underwater vehicle with two shaped charges arranged one behind the other

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880103A (en) * 1972-08-21 1975-04-29 Us Navy Tethered mine hunting system
DE2829001A1 (en) * 1978-07-01 1980-09-11 Messerschmitt Boelkow Blohm Missile multiple warhead construction - has distance sensors firing main warhead via time delay after auxiliary warheads
DE3010917A1 (en) * 1980-03-21 1981-10-01 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Missile head with hollow charges - has preliminary charge axis offset from that of main charge
DE2829002A1 (en) * 1978-07-01 1984-03-29 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Multiple headed missile system - moves initial- and after-action bodies apart axially before detonation
DE3626434A1 (en) * 1986-08-05 1988-02-18 Diehl Gmbh & Co Method and device for destroying large-volume explosive bodies with thin casings, such as seabed mines, in particular
DE3739370A1 (en) * 1987-11-20 1989-06-01 Diehl Gmbh & Co Bomblet warhead (cluster munition)
EP0775629A1 (en) * 1995-11-24 1997-05-28 DIEHL GMBH & CO. Sea-minesweeping

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880103A (en) * 1972-08-21 1975-04-29 Us Navy Tethered mine hunting system
DE2829001A1 (en) * 1978-07-01 1980-09-11 Messerschmitt Boelkow Blohm Missile multiple warhead construction - has distance sensors firing main warhead via time delay after auxiliary warheads
DE2829002A1 (en) * 1978-07-01 1984-03-29 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Multiple headed missile system - moves initial- and after-action bodies apart axially before detonation
DE3010917A1 (en) * 1980-03-21 1981-10-01 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Missile head with hollow charges - has preliminary charge axis offset from that of main charge
DE3626434A1 (en) * 1986-08-05 1988-02-18 Diehl Gmbh & Co Method and device for destroying large-volume explosive bodies with thin casings, such as seabed mines, in particular
DE3739370A1 (en) * 1987-11-20 1989-06-01 Diehl Gmbh & Co Bomblet warhead (cluster munition)
EP0775629A1 (en) * 1995-11-24 1997-05-28 DIEHL GMBH & CO. Sea-minesweeping

Also Published As

Publication number Publication date
DK1000312T3 (en) 2004-02-09
EP1000312A1 (en) 2000-05-17
DE69911884T2 (en) 2004-09-09
ES2209435T3 (en) 2004-06-16
FR2779514A1 (en) 1999-12-10
EP1000312B1 (en) 2003-10-08
FR2779514B1 (en) 2001-01-26
DE69911884D1 (en) 2003-11-13

Similar Documents

Publication Publication Date Title
EP3102906B1 (en) Hollow charge and use for separating two floors of an aeronautical vehicle or for the neutralization thereof
EP0800054B1 (en) Projectile the warhead of which is triggered by means of a target designator
EP0438343B1 (en) Penetrator ammunition for targets with high mechanical resistance
FR2844348A1 (en) UNIVERSAL JET BOMB AND LOAD CONE
EP0221218B1 (en) Shaped-charge war heads in tandem arrangement
FR2545923A1 (en) PROJECTILE ENSURING THE DRILLING OF SHIELDS
EP0084007B1 (en) Dual stage penetrator bomb
EP1766323B1 (en) Projectile, in particular an anti-infrastructure penetrating bomb and method for penetration of said projectile through a wall
EP1000312B1 (en) Countermeasure ammunition
WO2011023863A1 (en) Method and system for remotely launching, from an underwater environment, tactical or strategic craft having an aerial phase
FR2796454A1 (en) Weapon system mounted on stealth aircraft is concealed to minimize radar signature has concelaed tube fixed to the exterior and minmizes the reflection of electromagnetic waves
EP1521053B1 (en) Anti-bunker ammunition
EP0943887B1 (en) Conversion kit enabling the conversion of an explosive projectile to a concrete piercing projectile and projectile obtained by conversion
FR2775770A1 (en) Explosive mine clearance munition
FR2601763A1 (en) SUB-CALIBER PROJECTILE OF ARRAY TYPE FOR ACTIVE SHIELDS
FR2704052A1 (en) Multi-ignitable shaped charge
EP1302741B1 (en) High explosive projectile
FR2975482A1 (en) Warhead for use in projectile, has coating comprising machining zones or inserts that are formed or arranged to cause expansion of projection material at initiation of explosive charge to create impact on target
FR2775769A1 (en) Submarine launched munition for mine clearance
FR2747185A1 (en) Projectile with explosive charge producing fragments or main missile
FR2742539A1 (en) Multi-purpose explosive charge, e.g. for detonating mines
EP2204634A1 (en) Warhead projecting rods
FR2672385A1 (en) Underwater weapon with good directional stability
EP1371935A1 (en) Device and ammunition for the protection of a vehicle or platform against threats
EP3633313A1 (en) Enclosure for ammunition and ammunition including such an enclosure

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): NO

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

WWE Wipo information: entry into national phase

Ref document number: 1999922246

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWP Wipo information: published in national office

Ref document number: 1999922246

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1999922246

Country of ref document: EP