EP0916921A1 - Munitions for mine clearance - Google Patents

Munitions for mine clearance Download PDF

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Publication number
EP0916921A1
EP0916921A1 EP98120292A EP98120292A EP0916921A1 EP 0916921 A1 EP0916921 A1 EP 0916921A1 EP 98120292 A EP98120292 A EP 98120292A EP 98120292 A EP98120292 A EP 98120292A EP 0916921 A1 EP0916921 A1 EP 0916921A1
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EP
European Patent Office
Prior art keywords
projectile
demining
sub
projectiles
magnetic
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Granted
Application number
EP98120292A
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German (de)
French (fr)
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EP0916921B1 (en
Inventor
Didier Roger
Ghislain Hervieu
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Giat Industries SA
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Giat Industries SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H11/00—Defence installations; Defence devices
    • F41H11/12—Means for clearing land minefields; Systems specially adapted for detection of landmines
    • 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
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information

Definitions

  • the technical field of the invention is that of demining ammunition, especially for landmines.
  • Demining munitions are used to carry out safety distance clearing a passage in a field of mines.
  • Known demining munitions include generally an explosive charge which is initiated at the vicinity of the mines so as to cause the detonation of these past.
  • Patent US4776255 thus describes a projectile self-propelled which deploys on its trajectory a detonating cord. The line is initiated when it comes into contact with the ground.
  • New generation anti-tank mines are usually equipped with a magnetic sensor igniter which allows them to detect the approach of the ferro mass important magnetic formed by a tank or a vehicle.
  • Known demining systems that initiate remotely such mines include a generator electromagnetic integral with a vehicle and which projects into before the latter a magnetic signature close to that of a tank.
  • Patent FR2701105 describes such a demining system.
  • Patent US5192827 proposes a projectile which can generate an electromagnetic pulse, especially micro wave or radio frequency, near a target. He puts in operates a capacitor which is charged with current before the shoot. Such a projectile is also used complex.
  • Patent DE2455769 describes a system for destroying land mines which uses a conductive net connected to a electric generator.
  • the net can optionally be dispersed by rocket.
  • the implementation of such a projectile is also complex because it requires the use of a electric generator and making connections electric.
  • patent US4562789 shows a demining system of naval mines which is constituted by a torpedo carrying permanent magnets in the form of rotating discs driven by control motors.
  • the shape of the field is modulated by playing on the relative rotational speeds of different discs.
  • Such a device is complex and bulky and it is totally unsuitable for an operation of land clearance.
  • the ammunition according to the invention is of design simple and inexpensive because it does not implement any on-board or off-shore electrical energy. So she can be provided as an endowment to all combat vehicles for enable them to ensure their self-protection against mines.
  • the subject of the invention is a demining munition, especially for landmines, and including at least a projectile launched by a propellant charge, and containing at least one magnetic field generator, ammunition characterized in that the projectile comprises dispersing means allowing the trajectory to be released or the magnetic field generators that are made up by magnetized sub-projectiles.
  • the sub-projectiles may be in the form of beads or have two conical ends.
  • the sub-projectiles may include a magnetic material core coated with a plastic envelope.
  • the material of the magnetic core or sub-projectile may have a coercive field greater than 40,000 A / m and a residual field greater than 0.8 Tesla.
  • the material of the core or of the sub-projectile magnetized will be chosen from the following materials: AlNiCo V, SmCo5, Neodymium.
  • the plastic of the envelope coating the core is colored and / or fluorescent.
  • the projectile contain or less a box or container containing the sub-projectiles, the dispersing means being constituted by an explosive charge of dispersion arranged at the axis of the housing or container.
  • the ammunition may include at least two projectiles placed in a launch tube intended for be secured to a shooting platform, tube containing an ejection charge.
  • a demining munition according to a first embodiment of the invention comprises a propellant charge (not shown) and a projectile 1.
  • the projectile here is an artillery or mortar and its propellant charge will for example be contained in a socket or a gargousse.
  • the projectile 1 comprises a body 2 on which are fixed by threading or riveting a warhead 3 and a base 4.
  • a propellant gas tightness belt 5 is crimped at a rear part of the body 2, and it allows the projectile fire from a weapon system (not shown) like a cannon or a mortar.
  • the warhead 3 carries at its front part a rocket chronometric 6 programmable, mechanical or electronic. This rocket is intended to initiate a gas generating pyrotechnic composition 7.
  • the body 2 of the projectile contains generating means magnetic field 8, which will be described below, as well than a push piston 19.
  • the magnetic field generating means are constituted by magnetic sub-projectiles having the shape of balls (approximately 140 balls of 12 mm in diameter).
  • Figure 3 shows such a sub-projectile 9 in section. he has a parallelepipedic core 10 (here for example cubic) made of a magnetic material generating a magnetic field of significant intensity, core coated by an envelope 11 in plastic material (for example a deformable polymer such as rubber).
  • a parallelepipedic core 10 here for example cubic
  • plastic material for example a deformable polymer such as rubber
  • Each ball has a diameter of 10 to 20 mm, the side of the cube is between 8 mm and 12 mm.
  • the magnetic material will be chosen so that it has a coercive field greater than 40,000 A / m and a field residual greater than 0.8 Tesla.
  • the envelope 11 has the function of absorbing the shocks received by the nucleus, both when firing the projectile and when dispersal of sub-projectiles. By its deformability it also allows for the placement of sub-projectiles without play in the body of the projectile, the sub-projectiles being then kept slightly compressed between pellet 4 and piston 19.
  • the envelope can advantageously be produced in one colored or phosphorescent plastic, we will ensure thus marking the demined area of land.
  • the chronometric rocket 6 After identifying an area of land to be cleared and evaluation of its distance, we program in a known manner the chronometric rocket 6 (manually or with a programming not shown) by introducing into it data relating to the moment at which the dispersion must be ordered from the moment of firing. This moment depends on the characteristics of the shot (speeds and angles of shooting) and it is given by a shooting table.
  • a firing platform launches projectile 1 towards of the area to be cleared.
  • rocket 6 initiates the means of dispersal constituted by the pyrotechnic charge 7.
  • the gas pressure generated pushes the piston 19 which exerts pressure on the base 4 by means of the balls 9 forming the means field generators 8.
  • the means of securing the base and the body 2 is sheared and the balls 9 are scattered over the area to clear.
  • the speeds of the different balls are variable in intensity and orientation and their relative positioning is also variable.
  • the result is a magnetic field global generated by the set of balls which is variable in orientation. The level of this field is sufficient to trigger most igniter mines passive.
  • the variability of the field also makes it difficult the design of a mine igniter hardened to this type of deception.
  • Figure 2 shows another embodiment of a demining ammunition according to the invention.
  • This mode differs from the previous one in that the body 2 of the projectile 1 contains, not a stack of balls, but a container 12 formed of a metal envelope 13 closed at each end by a cover 14a, 14b.
  • the cover 14b carries a delay igniter 15 which is connected by a connection 16 to the rocket 6.
  • the igniter 15 is connected to an explosive charge of dispersion 17 arranged in a sheath coaxial with the container 12.
  • the dispersion charge will for example be a charge combining aluminum and potassium perchlorate.
  • Container 12 contains a field generator magnetic 8 formed by a stack of magnetic beads as previously described.
  • the rocket 6 causes on the one hand the initiation of the pyrotechnic charge 7 and on the other hand (via of connection 16) that of the pyrotechnic delay of the delay igniter 15.
  • the gas pressure pushes the piston 19 which ejects the base 4 and container 12.
  • This embodiment compared to previous is that it allows the balls to be released at a shorter distance from the ground (for example of the order of 2 to 5 m), this results in less dispersion of the balls in space and greater mine clearance efficiency.
  • each container 12 will contain balls magnetized and an explosive charge of dispersion initiated by a pyrotechnic delay. This will result in better spatial distribution of logs.
  • Figure 4 shows ammunition according to a third mode for carrying out the invention.
  • This ammunition 101 includes a case 102 which carries the level of a rear part 102 has a base 103 carrying a radial lug 104 which allows the munition to be fixed by a bayonet mount on a launcher (not shown) which is integral with a structure such as a vehicle or fixed structure.
  • the case 102 is closed at its front part by a plug 120 secured to the case by at least one pin radial 121.
  • the case 102 has a rear flange 102b which is pinched between a shoulder of the base 103 and a nut 105 screwed to the base.
  • the base 103 carries an electric igniter 106 fixed on a support 107 bonded to the base 103.
  • the electrical wires of the igniter 106 are connected to an axial contact 108 on the one hand and on the base 103 on the other hand, the axial contact being isolated electrically from the base.
  • the support 107 contains a pyrotechnic ejection charge 109 which consists of for example by a propellant powder or an ignition powder.
  • the case 102 also contains a piston 110 on which a stack of two demining projectiles is placed 111a, 111b.
  • the piston 110 has a diameter smaller than that of the case 102 and is supported on a counterbore arranged at the rear of projectile 111a.
  • the case 102 thus constitutes a launching tube for the projectiles 111, the ejection charge 109 being intended to generate gases which will be applied to the piston 110 which will push the projectiles out of the holster.
  • Each projectile 111 is formed by a casing cylindrical 112 for example made of aluminum and which is closed by a bottom 114 and a cover 113 screwed.
  • the bottom 114 carries an axial housing which receives a plug ignition 116 comprising a pyrotechnic composition with delay.
  • An explosive charge of dispersion 117 is placed in a plastic sheath 118 coaxial with the housing 112.
  • the case also contains a magnetic generator formed by a stack of balls of the type described previously (approximately 70 balls of diameter 12 mm per housing).
  • each projectile 111 is positioned set back from the rear end of the housing.
  • a such an arrangement makes it possible to arrange, on the one hand, a bedroom 122a between the rear projectile 111a and the piston 110, and on the other hand a chamber 122b between the two projectiles 111a and 111b.
  • each projectile has two notches radials 123 arranged at its rear part (see FIG. 5) and the casing 112a of the rear projectile 111a also has two longitudinal grooves 119 along two generators.
  • the notches 123 of the rear projectile make it possible to pass some of the propellant gases generated by the ejection charge 109 to chamber 122a and the igniter to delay of the rear projectile 111a.
  • the longitudinal grooves 119 also pass a part of the propellant gases towards the chamber 122b separating the two projectiles 111a and 111b, this through the notches 123 arranged on the housing 112b of the front projectile 111b.
  • the propellants therefore also ignite the delay pyrotechnic compositions of the two projectiles, these compositions will ensure the initiation on trajectory of dispersion charges 117.
  • These grooves 119 are calibrated so as to allow passage enough gas to ignite the delay and avoid a too much pressure between the two projectiles which would brake the rear projectile.
  • the case 102 of the ammunition is fixed to a launcher 124 secured to a vehicle or structure 125.
  • the ejection charge When firing the ammunition the ejection charge is initiated and it causes the lid 120 to open, the ignition of the delays 116 and the expulsion of the two projectiles 111a, 111b.
  • the heights H1 and H2 relative on the ground are substantially the same and close to 3 m.
  • the logs are then distributed over the ground over an area of approximately 200 m 2 .
  • a vehicle fitted with such a munitions launcher demining can therefore easily ensure the clearance of passages about 10 m wide by 20 m long.
  • the launcher and the ammunition are light and little expensive that can equip any type of vehicle, from tank to light infantry vehicle. Launchers adapted to these ammunition is already in service on many vehicles and allow the dispersal of smoke ammunition or close defense grenades. Demining ammunition according to the invention therefore makes it possible to endow easily and inexpensively these vehicles with quick demining capability and that is also more effective than pyrotechnical deminers against new generation mines.
  • Figure 7 shows another embodiment of a magnetic sub-projectile 9.
  • This sub-projectile differs from that of Figure 3 in that that the core 10 is a rectangular parallelepiped and the casing 11 is formed of a central cylindrical part 11a to which two conical ends 11b are connected and 11c.
  • the axis 19 of the conical ends and of the part cylindrical of the envelope 11 is perpendicular to the direction 20 of a great length 21 of the core 10.
  • the magnet formed by the core 10 has its north poles (N) and south (S) located on either side of axis 19 of envelope 11.
  • Such sub-projectiles are arranged in a projectile as described with reference to Figures 1, 2 or 4 with their axes 19 all parallel to each other and parallel to the axis of the carrying projectile (1 or 111).
  • the rotation around the axis 19 causes a variation of the orientation of the magnetic field generated by each core 10. This improves the effectiveness of mine clearance.
  • sub-projectiles for example define a sub-projectile with two ends conical connecting at their large bases (a projectile according to figure 7 devoid of cylindrical part 11a).

Abstract

The shell comprises a projectile (1) launched by a propulsive charge and containing a disperser (7) for one or more magnetic field generators (8) in the form of magnetic sub-projectiles.

Description

Le domaine technique de l'invention est celui des munitions de déminage, notamment pour les mines terrestres.The technical field of the invention is that of demining ammunition, especially for landmines.

Les munitions de déminage permettent de réaliser à distance de sécurité le dégagement d'un passage dans un champ de mines.Demining munitions are used to carry out safety distance clearing a passage in a field of mines.

Suivant leur taille et leur puissance, elles sont mise en oeuvre soit par une personne soit par un véhicule.According to their size and their power, they are put in works either by a person or by a vehicle.

Les munitions de déminage connues comprennent généralement une charge explosive qui est initiée au voisinage des mines de façon à provoquer la détonation de ces dernières.Known demining munitions include generally an explosive charge which is initiated at the vicinity of the mines so as to cause the detonation of these past.

Le brevet US4776255 décrit ainsi un projectile autopropulsé qui déploie sur trajectoire un cordeau détonant. Le cordeau est initié lorsqu'il arrive en contact avec le sol.Patent US4776255 thus describes a projectile self-propelled which deploys on its trajectory a detonating cord. The line is initiated when it comes into contact with the ground.

On connaít également des munitions de déminage dans lesquelles l'explosif est initié à distance du sol. C'est le souffle de l'explosion qui provoque alors l'initiation des mines.We also know of demining ammunition in which the explosive is initiated at a distance from the ground. It's the breath of the explosion which then causes the initiation of mines.

Ces munitions de déminage sont inefficaces contre les mines antichar de nouvelles générations dont l'allumeur est conçu pour résister au choc provoqué par l'initiation d'une charge explosive.These demining munitions are ineffective against new generation anti-tank mines whose igniter is designed to withstand the shock of initiating a explosive charge.

Les mines antichar de nouvelle génération sont généralement dotées d'un allumeur à senseur magnétique qui leur permet de détecter l'approche de la masse ferro magnétique importante constituée par un char ou un véhicule.New generation anti-tank mines are usually equipped with a magnetic sensor igniter which allows them to detect the approach of the ferro mass important magnetic formed by a tank or a vehicle.

Les systèmes de déminage connus qui permettent d'initier à distance de telles mines comprennent un générateur électromagnétique solidaire d'un véhicule et qui projette en avant de ce dernier une signature magnétique proche de celle d'un char.Known demining systems that initiate remotely such mines include a generator electromagnetic integral with a vehicle and which projects into before the latter a magnetic signature close to that of a tank.

Le brevet FR2701105 décrit un tel système de déminage.Patent FR2701105 describes such a demining system.

Cependant de tels systèmes sont coûteux, consomment beaucoup d'énergie et ne peuvent donc équiper tous les véhicules de combat. However such systems are expensive, consume a lot of energy and therefore cannot equip all combat vehicles.

De plus, ils ne peuvent initier les mines qu'en avant du véhicule et à une distance relativement réduite (de l'ordre de 3 m).In addition, they can only initiate mines before the vehicle and at a relatively short distance (around 3 m).

On connait par les brevets EP757224 et DE3528338 des munitions emportant ou dispersant des générateurs de micro ondes. De tels générateurs sont complexes et coûteux à réaliser et ils sont plus particulièrement destinés à neutraliser les systèmes radars ou de contrôles de tir.We know from patents EP757224 and DE3528338 ammunition carrying or dispersing micro generators waves. Such generators are complex and expensive to realize and they are specifically intended for neutralize radar or fire control systems.

Le brevet US5192827 propose un projectile pouvant engendrer une impulsion électromagnétique, notamment micro onde ou radio fréquence, au voisinage d'une cible. Il met en oeuvre un condensateur qui est chargé en courant avant le tir. Un tel projectile est également de mise en oeuvre complexe.Patent US5192827 proposes a projectile which can generate an electromagnetic pulse, especially micro wave or radio frequency, near a target. He puts in operates a capacitor which is charged with current before the shoot. Such a projectile is also used complex.

Le brevet DE2455769 décrit un système de destruction de mines terrestres qui utilise un filet conducteur relié à un générateur électrique. Le filet peut éventuellement être dispersé par roquette. La mise en oeuvre d'un tel projectile est également complexe, car elle impose le recours à un générateur électrique et la réalisation de connexions électriques.Patent DE2455769 describes a system for destroying land mines which uses a conductive net connected to a electric generator. The net can optionally be dispersed by rocket. The implementation of such a projectile is also complex because it requires the use of a electric generator and making connections electric.

Enfin le brevet US4562789 montre un système de déminage de mines navales qui est constitué par une torpille emportant des aimants permanents ayant la forme de disques rotatifs entraínés par des moteurs de commande. La forme du champ est modulée en jouant sur les vitesses de rotation relatives des différents disques. Un tel dispositif est complexe et encombrant et il est totalement inadapté à une opération de déminage terrestre.Finally patent US4562789 shows a demining system of naval mines which is constituted by a torpedo carrying permanent magnets in the form of rotating discs driven by control motors. The shape of the field is modulated by playing on the relative rotational speeds of different discs. Such a device is complex and bulky and it is totally unsuitable for an operation of land clearance.

C'est le but de l'invention de proposer une munition de déminage permettant de pallier de tels inconvénients.It is the object of the invention to provide a munition of demining to overcome such drawbacks.

Ainsi la munition selon l'invention est de conception simple et peu coûteuse car elle ne met en oeuvre aucune énergie électrique embarquée ou délocalisée. Elle peut donc être fournie en dotation à tous les véhicules de combat pour leur permettre d'assurer leur autoprotection contre les mines. Thus the ammunition according to the invention is of design simple and inexpensive because it does not implement any on-board or off-shore electrical energy. So she can be provided as an endowment to all combat vehicles for enable them to ensure their self-protection against mines.

Elle peut également être conçue suffisamment légère pour pouvoir être mise en oeuvre par des fantassins.It can also be designed light enough to can be implemented by infantrymen.

Elle a enfin une efficacité contre toutes les mines de nouvelles générations dotées d'un senseur magnétique et contre lesquelles les munitions de déminage qui utilisent les explosifs sont inefficaces.Finally, it has an effectiveness against all mines of new generations with a magnetic sensor and against which the demining munitions that use the explosives are ineffective.

Ainsi l'invention a pour objet une munition de déminage, notamment pour les mines terrestres, et comprenant au moins un projectile lancé au moyen d'une charge propulsive, et renfermant au moins un générateur de champ magnétique, munition caractérisée en ce que le projectile comprend des moyens de dispersion permettant de libérer sur trajectoire le ou les générateurs de champ magnétique qui sont constitués par des sous projectiles aimantés.Thus, the subject of the invention is a demining munition, especially for landmines, and including at least a projectile launched by a propellant charge, and containing at least one magnetic field generator, ammunition characterized in that the projectile comprises dispersing means allowing the trajectory to be released or the magnetic field generators that are made up by magnetized sub-projectiles.

Selon un mode particulier de réalisation, les sous-projectiles pourront avoir la forme de billes ou bien comporter deux extrémités coniques.According to a particular embodiment, the sub-projectiles may be in the form of beads or have two conical ends.

Selon un mode particulier de réalisation, les sous-projectiles pouront comporter un noyau en matériau aimanté enrobé par une enveloppe en matière plastique.According to a particular embodiment, the sub-projectiles may include a magnetic material core coated with a plastic envelope.

Le matériau du noyau ou du sous-projectile aimanté pourra présenter un champ coercitif supérieur à 40000 A/m et un champ rémanent supérieur à 0,8 Tesla.The material of the magnetic core or sub-projectile may have a coercive field greater than 40,000 A / m and a residual field greater than 0.8 Tesla.

Avantageusement le matériau du noyau ou du sous-projectile aimanté sera choisi parmi les matériaux suivants: AlNiCo V, SmCo5, Néodyme.Advantageously, the material of the core or of the sub-projectile magnetized will be chosen from the following materials: AlNiCo V, SmCo5, Neodymium.

Selon une variante de réalisation, la matière plastique de l'enveloppe enrobant le noyau est colorée et/ou fluorescente.According to an alternative embodiment, the plastic of the envelope coating the core is colored and / or fluorescent.

Selon un autre mode de réalisation, le projectile comportera ou moins un boítier ou conteneur renfermant les sous-projectiles, les moyens de dispersion étant constitués par une charge explosive de dispersion disposée au niveau de l'axe du boítier ou du conteneur.According to another embodiment, the projectile contain or less a box or container containing the sub-projectiles, the dispersing means being constituted by an explosive charge of dispersion arranged at the axis of the housing or container.

Avantageusement, la munition pourra comporter au moins deux projectiles disposés dans un tube de lancement destiné à être rendu solidaire d'une plate-forme de tir, tube renfermant une charge d'éjection. Advantageously, the ammunition may include at least two projectiles placed in a launch tube intended for be secured to a shooting platform, tube containing an ejection charge.

L'invention sera mieux comprise à la lecture de la description qui va suivre de modes particuliers de réalisation, description faite en référence aux dessins annexés et dans lesquels :

  • la figure 1 montre un projectile d'une munition de déminage suivant un premier mode de réalisation de l'invention,
  • la figure 2 montre un projectile d'une munition de déminage suivant un deuxième mode de réalisation de l'invention,
  • la figure 3 représente en coupe un mode particulier de réalisation d'un sous-projectile générateur de champ magnétique,
  • la figure 4 représente en coupe longitudinale une munition de déminage selon un troisième mode de réalisation de l'invention, coupe réalisée suivant le plan repéré BB sur la figure 5,
  • la figure 5 est une vue en coupe transversale de cette munition, coupe réalisée suivant le plan repéré AA sur la figure 4,
  • les figures 6a et 6b sont des schémas représentant deux phases de fonctionnement d'une munition selon l'invention.
  • la figure 7 est une vue en coupe d'un autre mode particulier de réalisation d'un sous-projectile générateur de champ magnétique.
The invention will be better understood on reading the description which follows of particular embodiments, description made with reference to the appended drawings and in which:
  • FIG. 1 shows a projectile of a demining munition according to a first embodiment of the invention,
  • FIG. 2 shows a projectile of a demining munition according to a second embodiment of the invention,
  • FIG. 3 represents in section a particular embodiment of a magnetic field generating sub-projectile,
  • FIG. 4 represents in longitudinal section a demining munition according to a third embodiment of the invention, section made along the plane marked BB in FIG. 5,
  • FIG. 5 is a cross-sectional view of this munition, a section taken along the plane marked AA in FIG. 4,
  • Figures 6a and 6b are diagrams showing two operating phases of a munition according to the invention.
  • Figure 7 is a sectional view of another particular embodiment of a magnetic field generating sub-projectile.

En se reportant à la figure 1, une munition de déminage selon un premier mode de réalisation de l'invention comporte une charge propulsive (non représentée) et un projectile 1.Referring to Figure 1, a demining munition according to a first embodiment of the invention comprises a propellant charge (not shown) and a projectile 1.

Le projectile est ici un projectile d'artillerie ou de mortier et sa charge propulsive sera par exemple contenue dans une douille ou une gargousse.The projectile here is an artillery or mortar and its propellant charge will for example be contained in a socket or a gargousse.

D'une façon classique le projectile 1 comporte un corps 2 sur lequel sont fixés par filetage ou rivetage une ogive 3 et un culot 4.In a conventional manner the projectile 1 comprises a body 2 on which are fixed by threading or riveting a warhead 3 and a base 4.

Une ceinture d'étanchéité aux gaz propulsifs 5 est sertie au niveau d'une partie arrière du corps 2, et elle permet le tir du projectile à partir d'un système d'arme (non représenté) tel un canon ou un mortier. A propellant gas tightness belt 5 is crimped at a rear part of the body 2, and it allows the projectile fire from a weapon system (not shown) like a cannon or a mortar.

L'ogive 3 porte à sa partie avant une fusée chronométrique 6 programmable, mécanique ou électronique. Cette fusée est destinée à réaliser l'amorçage d'une composition pyrotechnique génératrice de gaz 7.The warhead 3 carries at its front part a rocket chronometric 6 programmable, mechanical or electronic. This rocket is intended to initiate a gas generating pyrotechnic composition 7.

Le corps 2 du projectile renferme des moyens générateurs de champ magnétique 8, qui seront décrits ci-après, ainsi qu'un piston pousseur 19.The body 2 of the projectile contains generating means magnetic field 8, which will be described below, as well than a push piston 19.

Les moyens générateurs de champ magnétiques sont constitués par des sous-projectiles magnétiques ayant la forme de billes (environ 140 billes de 12 mm de diamètre).The magnetic field generating means are constituted by magnetic sub-projectiles having the shape of balls (approximately 140 balls of 12 mm in diameter).

La figure 3 montre un tel sous-projectile 9 en coupe. Il comporte un noyau 10 parallèlépipèdique (ici par exemple cubique) en un matériau aimanté générant un champ magnétique d'intensité importante, noyau enrobé par une enveloppe 11 en matière plastique (par exemple un polymère déformable tel le caoutchouc).Figure 3 shows such a sub-projectile 9 in section. he has a parallelepipedic core 10 (here for example cubic) made of a magnetic material generating a magnetic field of significant intensity, core coated by an envelope 11 in plastic material (for example a deformable polymer such as rubber).

Chaque bille a un diamètre de 10 à 20 mm, le côté du cube est compris entre 8 mm et 12 mm.Each ball has a diameter of 10 to 20 mm, the side of the cube is between 8 mm and 12 mm.

Le matériau magnétique sera choisi de telle sorte qu'il présente un champ coercitif supérieur à 40000 A/m et un champ rémanent supérieur à 0,8 Tesla.The magnetic material will be chosen so that it has a coercive field greater than 40,000 A / m and a field residual greater than 0.8 Tesla.

On pourra par exemple choisir comme matériaux magnétiques les alliages frittés utilisés habituellement pour réaliser les aimants permanents des moteurs à courant continu :

  • Al-Ni-Co V (Aluminium/Nickel/Cobalt) dont le champ coercitif est de 52000 A/m et le champ rémanent de 1,25 T,
  • Sm-Co5 (Samarium/Cobalt) - champ coercitif : 440000 A/m, champ rémanent 0,9 T,
  • Néodyme - champ coercitif : 689700 A/m, champ rémanent : 1,3 T.
    • We can for example choose as magnetic materials the sintered alloys usually used to make permanent magnets for DC motors:
  • Al-Ni-Co V (Aluminum / Nickel / Cobalt) with a coercive field of 52,000 A / m and a residual field of 1.25 T,
  • Sm-Co5 (Samarium / Cobalt) - coercive field: 440000 A / m, residual field 0.9 T,
  • Neodymium - coercive field: 689 700 A / m, residual field: 1.3 T.

    • L'enveloppe 11 a pour fonction d'amortir les chocs reçus par le noyau, tant lors du tir du projectile que lors de la dispersion des sous-projectiles. Par sa déformabilité elle permet également une mise en place des sous-projectiles sans jeu dans le corps du projectile, les sous projectiles étant alors maintenus légèrement comprimés entre le culot 4 et le piston 19. The envelope 11 has the function of absorbing the shocks received by the nucleus, both when firing the projectile and when dispersal of sub-projectiles. By its deformability it also allows for the placement of sub-projectiles without play in the body of the projectile, the sub-projectiles being then kept slightly compressed between pellet 4 and piston 19.

    On pourra avantageusement réaliser l'enveloppe en une matière plastique colorée ou phosphorescente, on assurera ainsi un marquage de la zone de terrain déminée.The envelope can advantageously be produced in one colored or phosphorescent plastic, we will ensure thus marking the demined area of land.

    Le fonctionnement de cette munition est le suivant.The operation of this munition is as follows.

    Après repérage d'une zone de terrain à déminer et évaluation de sa distance, on programme d'une façon connue la fusée chronométrique 6 (manuellement ou avec un système de programmation non représenté) en introduisant dans celle-ci des données relatives à l'instant auquel la dispersion doit être commandée à partir de l'instant de tir. Cet instant dépend des caractéristiques du tir (vitesses et angles de tir) et il est donné par une table de tir.After identifying an area of land to be cleared and evaluation of its distance, we program in a known manner the chronometric rocket 6 (manually or with a programming not shown) by introducing into it data relating to the moment at which the dispersion must be ordered from the moment of firing. This moment depends on the characteristics of the shot (speeds and angles of shooting) and it is given by a shooting table.

    Une plate-forme de tir lance le projectile 1 en direction de la zone à déminer. A l'issue de l'intervalle de temps programmé, la fusée 6 initie les moyens de dispersion constitués par la charge pyrotechnique 7. La pression des gaz engendrés pousse le piston 19 qui exerce une pression sur le culot 4 par l'intermédiaire des billes 9 formant les moyens générateurs de champ 8.A firing platform launches projectile 1 towards of the area to be cleared. At the end of the time interval programmed, rocket 6 initiates the means of dispersal constituted by the pyrotechnic charge 7. The gas pressure generated pushes the piston 19 which exerts pressure on the base 4 by means of the balls 9 forming the means field generators 8.

    Le moyen de solidarisation du culot et du corps 2 est cisaillé et les billes 9 sont dispersées au dessus de la zone à déminer. Les vitesses des différentes billes sont variables en intensité et orientation et leur positionnement relatif est lui aussi variable. Il en résulte un champ magnétique global engendré par l'ensemble des billes qui est variable en orientation. Le niveau de ce champ est suffisant pour provoquer le déclenchement de la plupart des mines à allumeur passif. La variabilité du champ rend par ailleurs difficile la conception d'un allumeur de mine durci à ce type de leurrage.The means of securing the base and the body 2 is sheared and the balls 9 are scattered over the area to clear. The speeds of the different balls are variable in intensity and orientation and their relative positioning is also variable. The result is a magnetic field global generated by the set of balls which is variable in orientation. The level of this field is sufficient to trigger most igniter mines passive. The variability of the field also makes it difficult the design of a mine igniter hardened to this type of deception.

    La figure 2 montre un autre mode de réalisation d'une munition de déminage selon l'invention.Figure 2 shows another embodiment of a demining ammunition according to the invention.

    Ce mode diffère du précédent en ce que le corps 2 du projectile 1 renferme, non pas un empilement de billes, mais un conteneur 12 formé d'une enveloppe métallique 13 fermée à chaque extrémité par un couvercle 14a,14b.This mode differs from the previous one in that the body 2 of the projectile 1 contains, not a stack of balls, but a container 12 formed of a metal envelope 13 closed at each end by a cover 14a, 14b.

    Le couvercle 14b porte un allumeur à retard 15 qui est relié par une connexion 16 à la fusée 6. The cover 14b carries a delay igniter 15 which is connected by a connection 16 to the rocket 6.

    L'allumeur 15 est relié à une charge explosive de dispersion 17 disposée dans une gaine coaxiale au conteneur 12. La charge de dispersion sera par exemple une charge associant aluminium et perchlorate de potassium.The igniter 15 is connected to an explosive charge of dispersion 17 arranged in a sheath coaxial with the container 12. The dispersion charge will for example be a charge combining aluminum and potassium perchlorate.

    Le conteneur 12 renferme un générateur de champ magnétique 8 formé par un empilement de billes aimantées telles que décrites précédemment.Container 12 contains a field generator magnetic 8 formed by a stack of magnetic beads as previously described.

    Le fonctionnement de ce mode de réalisation est le suivant.The operation of this embodiment is the following.

    Lorsque le projectile 1 se trouve au dessus de la zone à déminer, la fusée 6 provoque d'une part l'initiation de la charge pyrotechnique 7 et d'autre part (par l'intermédiaire de la connexion 16) celle du retard pyrotechnique de l'allumeur à retard 15.When projectile 1 is above the area to be demining, the rocket 6 causes on the one hand the initiation of the pyrotechnic charge 7 and on the other hand (via of connection 16) that of the pyrotechnic delay of the delay igniter 15.

    La pression des gaz pousse le piston 19 qui éjecte le culot 4 et le conteneur 12.The gas pressure pushes the piston 19 which ejects the base 4 and container 12.

    Celui-ci suit alors sa propre trajectoire vers le sol.It then follows its own trajectory towards the ground.

    Son orientation par rapport au sol et sa vitesse peuvent être corrigées par des moyens classiques utilisés sur les sous-munitions et non représentés ici : ailettes de freinage, parachute...Its orientation relative to the ground and its speed can be corrected by conventional means used on submunitions and not shown here: brake fins, parachute...

    Lorsque le retard pyrotechnique de l'allumeur 15 est consumé, la charge explosive de dispersion 17 est initiée et elle provoque la rupture du conteneur 12 et la dispersion des billes aimantées.When the pyrotechnic delay of the igniter 15 is consumed, the explosive charge of dispersion 17 is initiated and it causes the container 12 to rupture and the dispersion of magnetic beads.

    L'avantage de ce mode de réalisation par rapport au précédent est qu'il permet de libérer les billes à une distance du sol plus réduite (par exemple de l'ordre de 2 à 5 m), il en résulte une moindre dispersion des billes dans l'espace et une plus grande efficacité du déminage.The advantage of this embodiment compared to previous is that it allows the balls to be released at a shorter distance from the ground (for example of the order of 2 to 5 m), this results in less dispersion of the balls in space and greater mine clearance efficiency.

    A titre de variante, il est bien entendu possible de disposer plusieurs conteneurs 12 distincts à l'intérieur du corps du projectile 1. Chaque conteneur renfermera des billes aimantées et une charge explosive de dispersion initiée par un retard pyrotechnique. Il en résultera une meilleure répartition spatiale des billes.As a variant, it is of course possible to have several separate containers 12 inside the body of the projectile 1. Each container will contain balls magnetized and an explosive charge of dispersion initiated by a pyrotechnic delay. This will result in better spatial distribution of logs.

    La figure 4 montre une munition selon un troisième mode de réalisation de l'invention. Figure 4 shows ammunition according to a third mode for carrying out the invention.

    Cette munition 101 comprend un étui 102 qui porte au niveau d'une partie arrière 102a une embase 103 portant un ergot radial 104 qui autorise une fixation de la munition par un montage à baïonnette sur un lanceur (non représenté) qui est solidaire d'une structure telle un véhicule ou une structure fixe.This ammunition 101 includes a case 102 which carries the level of a rear part 102 has a base 103 carrying a radial lug 104 which allows the munition to be fixed by a bayonet mount on a launcher (not shown) which is integral with a structure such as a vehicle or fixed structure.

    L'étui 102 est obturé à sa partie avant par un bouchon 120 rendu solidaire de l'étui par au moins une goupille radiale 121.The case 102 is closed at its front part by a plug 120 secured to the case by at least one pin radial 121.

    L'étui 102 présente une collerette arrière 102b qui est pincée entre un épaulement de l'embase 103 et un écrou 105 vissé à l'embase.The case 102 has a rear flange 102b which is pinched between a shoulder of the base 103 and a nut 105 screwed to the base.

    L'embase 103 porte un allumeur électrique 106 fixé sur un support 107 collé à l'embase 103. Les fils électriques de l'allumeur 106 sont reliés à un contact axial 108 d'une part et à l'embase 103 d'autre part, le contact axial étant isolé électriquement de l'embase. Le support 107 renferme une charge pyrotechnique d'éjection 109 qui est constituée par exemple par une poudre propulsive ou une poudre d'allumage.The base 103 carries an electric igniter 106 fixed on a support 107 bonded to the base 103. The electrical wires of the igniter 106 are connected to an axial contact 108 on the one hand and on the base 103 on the other hand, the axial contact being isolated electrically from the base. The support 107 contains a pyrotechnic ejection charge 109 which consists of for example by a propellant powder or an ignition powder.

    L'étui 102 contient également un piston 110 sur lequel est placé un empilement de deux projectiles de déminage 111a,111b. Le piston 110 a un diamètre inférieur à celui de l'étui 102 et prend appui sur un lamage aménagé à l'arrière du projectile 111a.The case 102 also contains a piston 110 on which a stack of two demining projectiles is placed 111a, 111b. The piston 110 has a diameter smaller than that of the case 102 and is supported on a counterbore arranged at the rear of projectile 111a.

    L'étui 102 constitue ainsi un tube de lancement pour les projectiles 111, la charge d'éjection 109 étant destinée à engendrer des gaz qui s'appliqueront sur le piston 110 qui poussera les projectiles hors de l'étui.The case 102 thus constitutes a launching tube for the projectiles 111, the ejection charge 109 being intended to generate gases which will be applied to the piston 110 which will push the projectiles out of the holster.

    Chaque projectile 111 est formé par un boítier cylindrique 112 par exemple en aluminium et qui est fermé par un fond 114 et un couvercle 113 vissés.Each projectile 111 is formed by a casing cylindrical 112 for example made of aluminum and which is closed by a bottom 114 and a cover 113 screwed.

    Le fond 114 porte un logement axial qui reçoit un bouchon d'allumage 116 comportant une composition pyrotechnique à retard.The bottom 114 carries an axial housing which receives a plug ignition 116 comprising a pyrotechnic composition with delay.

    Une charge explosive de dispersion 117 est disposée dans une gaine 118 en matière plastique coaxiale au boítier 112.An explosive charge of dispersion 117 is placed in a plastic sheath 118 coaxial with the housing 112.

    Le boítier renferme également un générateur magnétique formé par un empilement de billes du type de celle décrite précédemment (environ 70 billes de diamètre 12 mm par boítier).The case also contains a magnetic generator formed by a stack of balls of the type described previously (approximately 70 balls of diameter 12 mm per housing).

    Le fond 114 de chaque projectile 111 se trouve positionné en retrait par rapport à l'extrémité arrière du boítier. Une telle disposition permet d'aménager, d'une part une chambre 122a entre le projectile arrière 111a et le piston 110, et d'autre part une chambre 122b entre les deux projectiles 111a et 111b.The bottom 114 of each projectile 111 is positioned set back from the rear end of the housing. A such an arrangement makes it possible to arrange, on the one hand, a bedroom 122a between the rear projectile 111a and the piston 110, and on the other hand a chamber 122b between the two projectiles 111a and 111b.

    Le boítier de chaque projectile comporte deux encoches radialès 123 aménagées à sa partie arrière (voir figure 5) et le boítier 112a du projectile arrière 111a présente également deux rainures longitudinales 119 le long de deux génératrices.The case of each projectile has two notches radials 123 arranged at its rear part (see FIG. 5) and the casing 112a of the rear projectile 111a also has two longitudinal grooves 119 along two generators.

    Les encoches 123 du projectile arrière permettent de faire passer une partie des gaz propulsifs générés par la charge d'éjection 109 vers la chambre 122a et l'allumeur à retard du projectile arrière 111a.The notches 123 of the rear projectile make it possible to pass some of the propellant gases generated by the ejection charge 109 to chamber 122a and the igniter to delay of the rear projectile 111a.

    Les rainures longitudinales 119 font passer également une partie des gaz propulsifs vers la chambre 122b séparant les deux projectiles 111a et 111b, cela au travers des encoches 123 aménagées sur le boítier 112b du projectile avant 111b.The longitudinal grooves 119 also pass a part of the propellant gases towards the chamber 122b separating the two projectiles 111a and 111b, this through the notches 123 arranged on the housing 112b of the front projectile 111b.

    Les gaz propulsifs assurent donc également l'allumage des compositions pyrotechniques à retard des deux projectiles, ces compositions assureront l'initiation sur trajectoire des charges de dispersion 117.The propellants therefore also ignite the delay pyrotechnic compositions of the two projectiles, these compositions will ensure the initiation on trajectory of dispersion charges 117.

    Ces rainures 119 sont calibrées de façon à laisser passer suffisamment de gaz pour l'allumage du retard et éviter une pression trop importante entre les deux projectiles ce qui freinerait le projectile arrière.These grooves 119 are calibrated so as to allow passage enough gas to ignite the delay and avoid a too much pressure between the two projectiles which would brake the rear projectile.

    Le fonctionnement d'une telle munition va maintenant être décrit en référence aux figures 6a et 6b.The operation of such ammunition will now be described with reference to Figures 6a and 6b.

    L'étui 102 de la munition est fixé à un lanceur 124 solidaire d'un véhicule ou d'une structure 125.The case 102 of the ammunition is fixed to a launcher 124 secured to a vehicle or structure 125.

    Lors du tir de la munition la charge d'éjection est initiée et elle provoque l'ouverture du couvercle 120, l'allumage des retards 116 et l'expulsion des deux projectiles 111a,111b. When firing the ammunition the ejection charge is initiated and it causes the lid 120 to open, the ignition of the delays 116 and the expulsion of the two projectiles 111a, 111b.

    A l'issue de la combustion des retards pyrotechniques de chaque projectile, les charges de dispersions 117 sont initiées (fig 6a) et elles provoquent la dispersion des billes magnétiques (fig 6b) qui provoquent la détonation des mines 126.At the end of the combustion of the pyrotechnic delays of each projectile, the charges of dispersions 117 are initiated (fig 6a) and they cause the dispersion of magnetic balls (fig 6b) which cause the detonation of mines 126.

    On jouera sur les valeurs des différents retards pour assurer l'initiation de chaque projectile au niveau d'un point souhaité de la trajectoire balistique.We will play on the values of the different delays for ensure the initiation of each projectile at a level desired point of the ballistic trajectory.

    On pourra par exemple réaliser une munition pour laquelle le premier projectile 111a est initié à une distance D1 du lanceur de l'ordre de 15 m et le deuxième projectile 111b est initié à une distance D2 du lanceur de l'ordre de 40 m.We could for example make a munition for which the first projectile 111a is initiated at a distance D1 from 15 m launcher and the second 111b projectile is initiated at a distance D2 from the launcher of the order of 40 m.

    Pour chaque projectile les hauteurs H1 et H2 par rapport au sol sont sensiblement les mêmes et voisines de 3 m.For each projectile the heights H1 and H2 relative on the ground are substantially the same and close to 3 m.

    Les billes se trouvent alors réparties sur le sol sur une surface d'environ 200 m2.The logs are then distributed over the ground over an area of approximately 200 m 2 .

    Un véhicule équipé d'un tel lanceur de munitions de déminage peut donc assurer aisément le dégagement de passages d'environ 10 m de large sur 20 m de long.A vehicle fitted with such a munitions launcher demining can therefore easily ensure the clearance of passages about 10 m wide by 20 m long.

    Le lanceur et la munition sont des éléments légers et peu coûteux qui peuvent équiper tout type de véhicule, du char au véhicule léger d'infanterie. Les lanceurs adaptés à ces munitions sont déjà en service sur de nombreux véhicules et permettent la dispersion de munitions fumigènes ou de grenades de défense rapprochée. La munition de déminage selon l'invention permet donc de doter facilement et à moindre coût ces véhicules d'une capacité de déminage rapide et qui est aussi plus efficace que les démineurs pyrotechniques contre les mines de nouvelle génération.The launcher and the ammunition are light and little expensive that can equip any type of vehicle, from tank to light infantry vehicle. Launchers adapted to these ammunition is already in service on many vehicles and allow the dispersal of smoke ammunition or close defense grenades. Demining ammunition according to the invention therefore makes it possible to endow easily and inexpensively these vehicles with quick demining capability and that is also more effective than pyrotechnical deminers against new generation mines.

    La figure 7 montre un autre mode de réalisation d'un sous-projectile aimanté 9.Figure 7 shows another embodiment of a magnetic sub-projectile 9.

    Ce sous projectile diffère de celui de la figure 3 en ce que le noyau 10 est un parallélépipède rectangle et l'enveloppe 11 est formée d'une partie cylindrique centrale 11a sur laquelle se raccordent deux extrémités coniques 11b et 11c. This sub-projectile differs from that of Figure 3 in that that the core 10 is a rectangular parallelepiped and the casing 11 is formed of a central cylindrical part 11a to which two conical ends 11b are connected and 11c.

    L'axe 19 des extrémités coniques et de la partie cylindrique de l'enveloppe 11 est perpendiculaire à la direction 20 d'une grande longueur 21 du noyau 10.The axis 19 of the conical ends and of the part cylindrical of the envelope 11 is perpendicular to the direction 20 of a great length 21 of the core 10.

    Ainsi l'aimant formé par le noyau 10 a ses pôles nord (N) et sud (S) situés de part et d'autre de l'axe 19 de l'enveloppe 11.Thus the magnet formed by the core 10 has its north poles (N) and south (S) located on either side of axis 19 of envelope 11.

    De tels sous-projectiles se trouvent disposés dans un projectile tel que décrit en référence aux figures 1 ,2 ou 4 avec leurs axes 19 tous parallèles entre eux et parallèles à l'axe du projectile porteur (1 ou 111).Such sub-projectiles are arranged in a projectile as described with reference to Figures 1, 2 or 4 with their axes 19 all parallel to each other and parallel to the axis of the carrying projectile (1 or 111).

    La structure aérodynamique particulière de ce sous projectile favorise sa rotation autour de son axe 19 par rapport aux rotations suivant d'autres axes.The particular aerodynamic structure of this sub projectile promotes its rotation around its axis 19 by relation to rotations along other axes.

    La rotation autour de l'axe 19 entraíne une variation périodique de l'orientation du champ magnétique engendré par chaque noyau 10. On améliore ainsi l'efficacité du déminage.The rotation around the axis 19 causes a variation of the orientation of the magnetic field generated by each core 10. This improves the effectiveness of mine clearance.

    A titre de variante il est bien entendu possible de donner d'autres formes aux sous-projectiles, par exemple de définir un sous-projectile comportant deux extrémités coniques se raccordant au niveau de leurs grandes bases (un projectile suivant la figure 7 dépourvu de partie cylindrique 11a).As a variant, it is of course possible to give other forms to the sub-projectiles, for example define a sub-projectile with two ends conical connecting at their large bases (a projectile according to figure 7 devoid of cylindrical part 11a).

    On pourra également définir des sous projectiles en matériau aimanté et dépourvus d'enveloppe en matière plastique.We can also define sub-projectiles in magnetic material and without a material shell plastic.

    Claims (9)

    Munition de déminage, notamment pour les mines terrestres, et comprenant au moins un projectile (1,111a,111b) lancé au moyen d'une charge propulsive, et renfermant au moins un générateur de champ magnétique (8), munition caractérisée en ce que le projectile (1,111a,111b) comprend des moyens de dispersion (7,17,117) permettant de libérer sur trajectoire le ou les générateurs de champ magnétique qui sont constitués par des sous projectiles aimantés (9).Mine clearance, especially for landmines, and comprising at least one projectile (1,111a, 111b) launched by means of a propellant charge, and containing at least one magnetic field generator (8), ammunition characterized in that the projectile (1,111a, 111b) comprises dispersing means (7,17,117) making it possible to release on the trajectory the magnetic field generator (s) which are constituted by magnetized sub-projectiles (9). Munition de déminage selon la revendication 1, caractérisée en ce que les sous-projectiles (9) ont la forme de billes.Demining ammunition according to claim 1, characterized in that the sub-projectiles (9) have the form of balls. Munition de déminage selon la revendication 1, caractérisée en ce que les sous-projectiles (9) comportent deux extrémités coniques.Demining ammunition according to claim 1, characterized in that the sub-projectiles (9) have two conical ends. Munition de déminage selon une des revendications 1 à 3, caractérisée en ce que les sous-projectiles (9) comportent un noyau (10) en matériau aimanté enrobé par une enveloppe (11) en matière plastique.Demining ammunition according to one of claims 1 to 3, characterized in that the sub-projectiles (9) comprise a core (10) of magnetic material coated by an envelope (11) made of plastic. Munition de déminage selon une des revendications 1 à 4, caractérisée en ce que le matériau du noyau (10) ou du sous-projectile aimanté (9) présente un champ coercitif supérieur à 40000 A/m et un champ rémanent supérieur à 0,8 Tesla.Demining ammunition according to one of claims 1 to 4, characterized in that the material of the core (10) or of the magnetic sub-projectile (9) has a coercive field greater than 40,000 A / m and a residual field greater than 0.8 You're here. Munition de déminage selon la revendication 5, caractérisée en ce que le matériau du noyau ou du sous projectile aimanté est choisi parmi les matériaux suivants: AlNiCo V, SmCo5, Néodyme.Demining ammunition according to claim 5, characterized in that the material of the core or the sub magnetic projectile is chosen from the following materials: AlNiCo V, SmCo5, Neodymium. Munition de déminage selon une des revendications 4 à 6, caractérisée en ce que la matière plastique de l'enveloppe (11) est colorée et/ou fluorescente.Demining ammunition according to one of claims 4 to 6, characterized in that the plastic material of the envelope (11) is colored and / or fluorescent. Munition de déminage selon une des revendications 1 à 7, caractérisée en ce que le projectile comporte au moins un boítier ou conteneur (12,112) renfermant les sous-projectiles (9), les moyens de dispersion étant constitués par une charge explosive de dispersion (17,117) disposée au niveau de l'axe du boítier ou du conteneur. Demining ammunition according to one of claims 1 to 7, characterized in that the projectile comprises at least one case or container (12,112) containing the sub-projectiles (9), the dispersing means being constituted by a filler explosive of dispersion (17,117) arranged at the level of the axis case or container. Munition selon une des revendications 1 à 8, caractérisée en ce qu'elle comprend au moins deux projectiles (111a,111b) disposés dans un tube de lancement (102) destiné à être rendu solidaire d'une plate-forme de tir, tube renfermant une charge d'éjection (109).Ammunition according to one of Claims 1 to 8, characterized in that it comprises at least two projectiles (111a, 111b) arranged in a launch tube (102) intended to be made integral with a shooting platform, tube containing an ejection charge (109).
    EP98120292A 1997-11-14 1998-10-27 Munitions for mine clearance Expired - Lifetime EP0916921B1 (en)

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    WO2002066919A1 (en) * 2001-02-16 2002-08-29 Qinetiq Limited Mine excavation method and apparatus
    US6883414B2 (en) 2001-02-16 2005-04-26 Qinetiq Limited Mine excavation method and apparatus
    US6540175B1 (en) * 2001-12-03 2003-04-01 Lockheed Martin Corporation System for clearing buried and surface mines

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    DE69810877T2 (en) 2003-11-13
    FR2771165B1 (en) 1999-12-31
    EP0916921B1 (en) 2003-01-22
    FR2771165A1 (en) 1999-05-21
    CA2251975A1 (en) 1999-05-14
    DE69810877D1 (en) 2003-02-27
    ATE231606T1 (en) 2003-02-15

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