EP3999802B1 - Ammunition having reduced sensitivity - Google Patents

Ammunition having reduced sensitivity Download PDF

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Publication number
EP3999802B1
EP3999802B1 EP20750337.6A EP20750337A EP3999802B1 EP 3999802 B1 EP3999802 B1 EP 3999802B1 EP 20750337 A EP20750337 A EP 20750337A EP 3999802 B1 EP3999802 B1 EP 3999802B1
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EP
European Patent Office
Prior art keywords
ammunition
bore
charge
stiffening element
priming
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Legal status (The legal status 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 status listed.)
Active
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EP20750337.6A
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German (de)
French (fr)
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EP3999802A1 (en
Inventor
Pierre Brunet
Emmanuel BACLE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eurenco France Sas
ArianeGroup SAS
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Eurenco SA
ArianeGroup SAS
Eurenco France SA
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Application filed by Eurenco SA, ArianeGroup SAS, Eurenco France SA filed Critical Eurenco SA
Publication of EP3999802A1 publication Critical patent/EP3999802A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B39/00—Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
    • F42B39/14—Explosion or fire protection arrangements on packages or ammunition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B39/00—Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
    • F42B39/20—Packages or ammunition having valves for pressure-equalising; Packages or ammunition having plugs for pressure release, e.g. meltable ; Blow-out panels; Venting arrangements

Definitions

  • the present invention relates to ammunition with reduced sensitivity.
  • An ammunition or military charge comprises a main explosive charge which is detonated directly or via a booster by an initiating device or relay.
  • a well or blind bore is made in the main charge or the booster in order to form a housing for the priming device.
  • the priming relay is placed in the well only when the ammunition is to be used, that is to say exploded. Consequently, during the entire time the ammunition is stored, the well is empty.
  • Such ammunition is for example known from the document FR 1 253 957 A .
  • the ammunition can be hit by projectiles such as bullets or heavy shrapnel. If the empty well is on the trajectory of the projectile, the latter can significantly damage the ammunition and lead in particular to a collapse of the well, to significant mechanical damage to the main load or the booster and to a shock between the walls. opposite the well. This damage at the level of the well is likely to cause a violent pyrotechnic reaction of the ammunition.
  • the object of the invention is to provide ammunition having improved impact resistance at the level of the housing reserved for the priming device.
  • ammunition with reduced sensitivity comprising an explosive charge, the explosive charge comprising a blind cylindrical bore intended to receive at least one priming device, the ammunition further comprising a stiffening element in contact with the internal surface of the bore, characterized in that the stiffening element is a solid cylinder having a volume corresponding to the volume of the bore.
  • the ammunition according to the invention has a greatly increased resistance to impact at the level of the blind cylindrical bore when the latter is in storage configuration, i.e. when not occupied by a boot device.
  • the risks of pyrotechnic reaction of the explosive charge are thus very significantly reduced.
  • the solid cylinder can be made of plastic material.
  • the object of the invention is also achieved with a reduced-sensitivity ammunition comprising a main explosive charge and a secondary priming charge surrounded by the main explosive charge, the secondary priming charge comprising a blind cylindrical bore intended to receive at least a priming device, the ammunition further comprising a stiffening element in contact with the internal surface of the bore, characterized in that the stiffening element is a solid cylinder having a volume corresponding to the volume of the bore.
  • the ammunition according to the invention has a greatly reinforced impact resistance at the level of the blind cylindrical bore when the latter is in the storage configuration, that is to say when it is not occupied. by an initiating device.
  • the risks of pyrotechnic reaction of the priming charge are thus very significantly reduced.
  • the solid cylinder can be made of plastic material.
  • the invention generally applies to any ammunition comprising a blind cylindrical shaft or bore which is usually empty during the storage phase of the ammunition.
  • FIG. 1 shows in partial longitudinal section the rear part of an ammunition 100 which is a so-called “General Use with Reduced Vulnerability” bomb, the illustrated embodiment not being, however, the subject of the present invention.
  • This ammunition is shown here schematically. It comprises an envelope or body 110 containing an explosive charge 120 such as the composition PXBN-109 (explosive with PHHT binder containing 20% aluminum, 64% RDX (1, 3, 5-trinitro-1, 3.5 -triazacyclohexane) and 16% binder containing PHHT), DOA (dioctyladipate), or IPDI (isophorone diisocyanate).
  • the PBXN-109 has a detonation velocity of 7600 mis.
  • the envelope 110 has an opening 111 cooperating with an opening 121 of the explosive charge.
  • a blind cylindrical bore or well 130 is present in the explosive charge 120 and opens out at the level of the openings 121 and 111.
  • the blind cylindrical bore 130 is intended to receive an initiation device or detonation relay capable of initiating on command the explosive charge 120.
  • a thin metal sheath 115 is present on the exposed surface of the charge 120 at the level of the bore 130.
  • Ammunition 100 is represented on the figure 1 in its storage configuration, that is to say when the priming device is not present in the bore 130.
  • the ammunition 100 comprises a stiffening element 140 in contact with the internal surface 130b of the blind cylindrical bore 130.
  • the stiffening element 140 corresponds here, contrary to the present invention, to a sleeve 141 whose outer surface 141a is in contact with the inner surface 130b of the bore 130.
  • the sleeve 141 is preferably made of metallic material such as, for example, SAE 4340 alloy steel.
  • the sleeve 141 made of metallic material preferably has a wall thickness E 141 greater than or equal to 6.5 mm.
  • the minimum thickness of the wall of the sleeve is determined by calculating the mechanical resistance necessary to impart to the blind cylindrical bore as a function of a determined impact force.
  • the sleeve can be completely hollow like the sleeve 141 or possibly be provided with additional stiffening elements as on the picture 2 which shows a sleeve 151 made of metallic material which comprises in its internal volume stiffening elements 152 each extending between two diametrically opposite points of the internal surface 151b of the sleeve. This increases the resistance to crushing of the sleeve, which possibly makes it possible to reduce the thickness of the wall of the sleeve.
  • the stiffening element of the invention consists of a solid cylinder.
  • the stiffening element can be made of plastic, which makes it possible to lighten its mass compared to a metallic material.
  • FIG. 3 shows in partial longitudinal section the rear part of ammunition 200 which is a so-called “General Use with Reduced Vulnerability” bomb in accordance with one embodiment of the invention.
  • the ammunition 200 differs from the ammunition 100 already described in that it also comprises a secondary priming charge.
  • the ammunition 200 comprises an envelope or body 210 containing a main explosive charge 220, for example a composite explosive based on oxynitrotriazole, and a secondary priming charge or booster 260 consisting for example of an explosive based on octogen.
  • Secondary seed charge 210 is surrounded by main explosive charge 220.
  • the casing 210 has an opening 211 cooperating with an opening 261 of the secondary priming charge 260.
  • a blind cylindrical bore or well 230 is present in the secondary priming charge 260 and opens out at the level of the openings 261 and 211.
  • the blind cylindrical bore 230 is intended to receive an initiating device or detonation relay capable of initiating on command the priming charge 260.
  • a thin metal sheath 215 is present on the exposed surface of the charge of secondary priming 260 at bore 130.
  • the ammunition 200 represented on the picture 3 in its storage configuration, that is to say when the priming device is not present in the bore 230, comprises a stiffening element 240 in contact with the internal surface 230b of the blind cylindrical bore 230.
  • the stiffening element 240 corresponds to a solid cylinder 241 whose outer surface 241a is in contact with the inner surface 230b of the bore 230.
  • the sleeve 241 is preferably made of plastic material such as for example high density polyethylene (HDPE).
  • HDPE high density polyethylene
  • the stiffening element is removable in order to allow it to be replaced by a priming device during use of the ammunition.
  • the placement and removal of the stiffening element are facilitated by the presence of a thin metal sheath on the exposed surface of the single charge or the secondary priming charge as described above.
  • the blind cylindrical bore or well intended to receive the priming device is produced coaxially with respect to the load.
  • the blind cylindrical bore can nevertheless be made in other orientations, such as for example orthogonally to the axis of the load.
  • the blind cylindrical bore is present at the level of the rear end of the ammunition. This may also be present at the level of the front part or front bottom of the ammunition.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Measuring Fluid Pressure (AREA)

Description

Domaine TechniqueTechnical area

La présente invention concerne une munition à sensibilité réduite.The present invention relates to ammunition with reduced sensitivity.

Technique antérieurePrior technique

Une munition ou charge militaire comprend un chargement explosif principal qui est mis en détonation directement ou via un booster par un dispositif ou relais d'amorçage. Un puits ou alésage borgne est réalisé dans le chargement principal ou le booster afin de former un logement pour le dispositif d'amorçage.An ammunition or military charge comprises a main explosive charge which is detonated directly or via a booster by an initiating device or relay. A well or blind bore is made in the main charge or the booster in order to form a housing for the priming device.

Le relais d'amorçage est placé dans le puits uniquement lorsque la munition doit être utilisée, c'est-à-dire explosée. Par conséquent, durant tout le temps où la munition est stockée, le puits est vide. Une telle munition est par exemple connue par le document FR 1 253 957 A .The priming relay is placed in the well only when the ammunition is to be used, that is to say exploded. Consequently, during the entire time the ammunition is stored, the well is empty. Such ammunition is for example known from the document FR 1 253 957 A .

Pendant sa période de stockage, la munition peut être frappée par des projectiles tels que des balles ou des éclats lourds. Si le puits vide se trouve sur la trajectoire du projectile, ce dernier peut endommager de façon importante la munition et conduire en particulier à un effondrement du puits, à des dommages mécaniques importants sur le chargement principal ou le booster et à un choc entre les parois opposées du puits. Ces endommagements au niveau du puits sont susceptibles d'entraîner une réaction pyrotechnique violente de la munition.During its storage period, the ammunition can be hit by projectiles such as bullets or heavy shrapnel. If the empty well is on the trajectory of the projectile, the latter can significantly damage the ammunition and lead in particular to a collapse of the well, to significant mechanical damage to the main load or the booster and to a shock between the walls. opposite the well. This damage at the level of the well is likely to cause a violent pyrotechnic reaction of the ammunition.

Exposé de l'inventionDisclosure of Invention

L'invention a pour but de proposer une munition présentant une résistance à l'impact améliorée au niveau du logement réservé pour le dispositif d'amorçage.The object of the invention is to provide ammunition having improved impact resistance at the level of the housing reserved for the priming device.

Ce but est atteint notamment grâce à une munition à sensibilité réduite comprenant un chargement explosif, le chargement explosif comportant un alésage cylindrique borgne destiné à recevoir au moins un dispositif d'amorçage, la munition comprenant en outre un élément raidisseur en contact avec la surface interne de l'alésage, caractérisée en ce que l'élément raidisseur est un cylindre plein présentant un volume correspondant au volume de l'alésage.This object is achieved in particular thanks to ammunition with reduced sensitivity comprising an explosive charge, the explosive charge comprising a blind cylindrical bore intended to receive at least one priming device, the ammunition further comprising a stiffening element in contact with the internal surface of the bore, characterized in that the stiffening element is a solid cylinder having a volume corresponding to the volume of the bore.

Ainsi, la munition selon l'invention présente une résistance à l'impact grandement renforcée au niveau de l'alésage cylindrique borgne lorsque celui-ci est en configuration de stockage, c'est-à-dire lorsqu'il n'est pas occupé par un dispositif d'amorçage. On réduit ainsi de manière très significative les risques de réaction pyrotechnique du chargement explosif.Thus, the ammunition according to the invention has a greatly increased resistance to impact at the level of the blind cylindrical bore when the latter is in storage configuration, i.e. when not occupied by a boot device. The risks of pyrotechnic reaction of the explosive charge are thus very significantly reduced.

Selon une caractéristique particulière de l'invention, le cylindre plein peut être en matériau plastique.According to a particular characteristic of the invention, the solid cylinder can be made of plastic material.

Le but de l'invention est également atteint avec une munition à sensibilité réduite comprenant un chargement explosif principal et un chargement d'amorçage secondaire entouré par le chargement explosif principal, le chargement d'amorçage secondaire comportant un alésage cylindrique borgne destiné à recevoir au moins un dispositif d'amorçage, la munition comprenant en outre un élément raidisseur en contact avec la surface interne de l'alésage, caractérisée en ce que l'élément raidisseur est un cylindre plein présentant un volume correspondant au volume de l'alésage.The object of the invention is also achieved with a reduced-sensitivity ammunition comprising a main explosive charge and a secondary priming charge surrounded by the main explosive charge, the secondary priming charge comprising a blind cylindrical bore intended to receive at least a priming device, the ammunition further comprising a stiffening element in contact with the internal surface of the bore, characterized in that the stiffening element is a solid cylinder having a volume corresponding to the volume of the bore.

Ainsi, la munition selon l'invention présente une résistance à l'impact grandement renforcée au niveau de l'alésage cylindrique borgne lorsque celui-ci est en configuration de stockage, c'est-à-dire lorsqu'il n'est pas occupé par un dispositif d'amorçage. On réduit ainsi de manière très significative les risques de réaction pyrotechnique du chargement d'amorçage.Thus, the ammunition according to the invention has a greatly reinforced impact resistance at the level of the blind cylindrical bore when the latter is in the storage configuration, that is to say when it is not occupied. by an initiating device. The risks of pyrotechnic reaction of the priming charge are thus very significantly reduced.

Selon une caractéristique particulière de l'invention, le cylindre plein peut être en matériau plastique.According to a particular characteristic of the invention, the solid cylinder can be made of plastic material.

Brève description des dessinsBrief description of the drawings

  • [Fig. 1] La figure 1 est une coupe longitudinale schématique partielle d'une partie arrière d'une munition à sensibilité réduite, le mode de réalisation illustré n'étant pas l'objet de la présente invention.[ Fig. 1 ] There figure 1 is a partial schematic longitudinal section of a rear part of a reduced-sensitivity ammunition, the illustrated embodiment not being the subject of the present invention.
  • [Fig. 2] La figure 2 est une vue schématique en coupe montrant un manchon muni d'éléments de rigidification,[ Fig. 2 ] There figure 2 is a schematic sectional view showing a sleeve provided with stiffening elements,
  • [Fig. 3] La figure 3 est une coupe longitudinale schématique partielle d'une partie arrière d'une munition à sensibilité réduite selon un mode de réalisation de l'invention.[ Fig. 3 ] There picture 3 is a partial diagrammatic longitudinal section of a rear part of a reduced-sensitivity ammunition according to one embodiment of the invention.
Description des modes de réalisationDescription of embodiments

L'invention s'applique d'une manière générale à toute munition comportant un puits ou alésage cylindrique borgne qui est habituellement vide lors de la phase de stockage de la munition.The invention generally applies to any ammunition comprising a blind cylindrical shaft or bore which is usually empty during the storage phase of the ammunition.

La figure 1 montre en coupe longitudinale partielle la partie arrière d'une munition 100 qui est une bombe dite « d'Emploi Général à Vulnérabilité Réduite », le mode de réalisation illustré n'étant toutefois pas l'objet de la présente invention. Cette munition est représentée ici de façon schématique. Elle comporte une enveloppe ou corps 110 renfermant un chargement explosif 120 comme par exemple la composition PXBN-109 (explosif à liant PHHT contenant 20% d'aluminium, 64% de RDX (1, 3, 5-trinitro-1, 3,5-triazacyclohexane) et 16% de liant contenant du PHHT), du DOA (dioctyladipate), ou de l'IPDI (isophorone diisocyanate). La PBXN-109 a une vitesse de détonation de 7600 mis. L'enveloppe 110 présente une ouverture 111 coopérant avec une ouverture 121 du chargement explosif. Un alésage cylindrique borgne ou puits 130 est présent dans le chargement explosif 120 et débouche à l'extérieur au niveau des ouvertures 121 et 111. L'alésage cylindrique borgne 130 est destiné à recevoir un dispositif d'amorçage ou relais de détonation apte à initier sur commande le chargement explosif 120. Une gaine métallique de faible épaisseur 115 est présente sur la surface exposée du chargement 120 au niveau de l'alésage 130.There figure 1 shows in partial longitudinal section the rear part of an ammunition 100 which is a so-called “General Use with Reduced Vulnerability” bomb, the illustrated embodiment not being, however, the subject of the present invention. This ammunition is shown here schematically. It comprises an envelope or body 110 containing an explosive charge 120 such as the composition PXBN-109 (explosive with PHHT binder containing 20% aluminum, 64% RDX (1, 3, 5-trinitro-1, 3.5 -triazacyclohexane) and 16% binder containing PHHT), DOA (dioctyladipate), or IPDI (isophorone diisocyanate). The PBXN-109 has a detonation velocity of 7600 mis. The envelope 110 has an opening 111 cooperating with an opening 121 of the explosive charge. A blind cylindrical bore or well 130 is present in the explosive charge 120 and opens out at the level of the openings 121 and 111. The blind cylindrical bore 130 is intended to receive an initiation device or detonation relay capable of initiating on command the explosive charge 120. A thin metal sheath 115 is present on the exposed surface of the charge 120 at the level of the bore 130.

La munition 100 est représentée sur la figure 1 dans sa configuration de stockage, c'est-à-dire lorsque le dispositif d'amorçage n'est pas présent dans l'alésage 130. Dans sa configuration de stockage, la munition 100 comprend un élément raidisseur 140 en contact avec la surface interne 130b de l'alésage cylindrique borgne 130. Sur la figure 1, l'élément raidisseur 140 correspond ici, contrairement à la présente invention, à un manchon 141 dont la surface externe 141a est en contact avec la surface interne 130b de l'alésage 130.Ammunition 100 is represented on the figure 1 in its storage configuration, that is to say when the priming device is not present in the bore 130. In its storage configuration, the ammunition 100 comprises a stiffening element 140 in contact with the internal surface 130b of the blind cylindrical bore 130. On the figure 1 , the stiffening element 140 corresponds here, contrary to the present invention, to a sleeve 141 whose outer surface 141a is in contact with the inner surface 130b of the bore 130.

Le manchon 141 est réalisé de préférence en matériau métallique comme par exemple l'acier allié SAE 4340 . A titre d'exemple, le manchon 141 en matériau métallique présente de préférence une épaisseur de paroi E141 supérieure ou égale à 6,5 mm. D'une manière générale, l'épaisseur minimale de la paroi du manchon est déterminée par calcul de la résistance mécanique nécessaire à conférer à l'alésage cylindrique borgne en fonction d'une force d'impact déterminée.The sleeve 141 is preferably made of metallic material such as, for example, SAE 4340 alloy steel. By way of example, the sleeve 141 made of metallic material preferably has a wall thickness E 141 greater than or equal to 6.5 mm. In general, the minimum thickness of the wall of the sleeve is determined by calculating the mechanical resistance necessary to impart to the blind cylindrical bore as a function of a determined impact force.

Le manchon peut être totalement creux comme le manchon 141 ou être éventuellement muni d'éléments supplémentaires de rigidification comme sur la figure 2 qui montre un manchon 151 en matériau métallique qui comprend dans son volume interne des éléments de rigidification 152 s'étendant chacun entre deux points diamétralement opposés de la surface interne 151b du manchon. On augmente ainsi la résistance à l'écrasement du manchon, ce qui permet éventuellement de diminuer l'épaisseur de la paroi du manchon.The sleeve can be completely hollow like the sleeve 141 or possibly be provided with additional stiffening elements as on the picture 2 which shows a sleeve 151 made of metallic material which comprises in its internal volume stiffening elements 152 each extending between two diametrically opposite points of the internal surface 151b of the sleeve. This increases the resistance to crushing of the sleeve, which possibly makes it possible to reduce the thickness of the wall of the sleeve.

Cependant, selon la présente invention, l'élément raidisseur de l'invention est constitué d'un cylindre plein. Dans ce cas, l'élément raidisseur peut être réalisé en plastique, ce qui permet d'alléger sa masse par rapport à un matériau métallique.However, according to the present invention, the stiffening element of the invention consists of a solid cylinder. In this case, the stiffening element can be made of plastic, which makes it possible to lighten its mass compared to a metallic material.

La figure 3 montre en coupe longitudinale partielle la partie arrière d'une munition 200 qui est une bombe dite « d'Emploi Général à Vulnérabilité Réduite » conformément à un mode de réalisation de l'invention. La munition 200 diffère de la munition 100 déjà décrite en ce qu'elle comprend en outre un chargement d'amorçage secondaire.There picture 3 shows in partial longitudinal section the rear part of ammunition 200 which is a so-called “General Use with Reduced Vulnerability” bomb in accordance with one embodiment of the invention. The ammunition 200 differs from the ammunition 100 already described in that it also comprises a secondary priming charge.

Plus précisément, la munition 200 comporte une enveloppe ou corps 210 renfermant un chargement explosif principal 220, par exemple un explosif composite à base d'oxynitrotriazole, et un chargement d'amorçage secondaire ou booster 260 constitué par exemple d'un explosif à base d'octogène. Chargement d'amorçage secondaire 210 est entouré par le chargement explosif principal 220.More specifically, the ammunition 200 comprises an envelope or body 210 containing a main explosive charge 220, for example a composite explosive based on oxynitrotriazole, and a secondary priming charge or booster 260 consisting for example of an explosive based on octogen. Secondary seed charge 210 is surrounded by main explosive charge 220.

L'enveloppe 210 présente une ouverture 211 coopérant avec une ouverture 261 du chargement d'amorçage secondaire 260. Un alésage cylindrique borgne ou puits 230 est présent dans le chargement d'amorçage secondaire 260 et débouche à l'extérieur au niveau des ouvertures 261 et 211. L'alésage cylindrique borgne 230 est destiné à recevoir un dispositif d'amorçage ou relais de détonation apte à initier sur commande le chargement d'amorçage 260. Une gaine métallique de faible épaisseur 215 est présente sur la surface exposée du chargement d'amorçage secondaire 260 au niveau de l'alésage 130.The casing 210 has an opening 211 cooperating with an opening 261 of the secondary priming charge 260. A blind cylindrical bore or well 230 is present in the secondary priming charge 260 and opens out at the level of the openings 261 and 211. The blind cylindrical bore 230 is intended to receive an initiating device or detonation relay capable of initiating on command the priming charge 260. A thin metal sheath 215 is present on the exposed surface of the charge of secondary priming 260 at bore 130.

Conformément à l'invention, la munition 200, représentée sur la figure 3 dans sa configuration de stockage, c'est-à-dire lorsque le dispositif d'amorçage n'est pas présent dans l'alésage 230, comprend un élément raidisseur 240 en contact avec la surface interne 230b de l'alésage cylindrique borgne 230. Sur la figure 3, l'élément raidisseur 240 correspond à un cylindre plein 241 dont la surface externe 241a est en contact avec la surface interne 230b de l'alésage 230.In accordance with the invention, the ammunition 200, represented on the picture 3 in its storage configuration, that is to say when the priming device is not present in the bore 230, comprises a stiffening element 240 in contact with the internal surface 230b of the blind cylindrical bore 230. On the picture 3 , the stiffening element 240 corresponds to a solid cylinder 241 whose outer surface 241a is in contact with the inner surface 230b of the bore 230.

Le manchon 241 est réalisé de préférence en matériau plastique comme par exemple de polyéthylène haute densité (PEHD).The sleeve 241 is preferably made of plastic material such as for example high density polyethylene (HDPE).

Dans tous les cas, l'élément raidisseur est amovible afin de permettre son remplacement par un dispositif d'amorçage lors de l'utilisation de la munition. Le placement et le retrait de l'élément raidisseur sont facilités par la présence d'une gaine métallique de faible épaisseur sur la surface exposée du chargement unique ou du chargement secondaire d'amorçage comme décrit ci-avant.In all cases, the stiffening element is removable in order to allow it to be replaced by a priming device during use of the ammunition. The placement and removal of the stiffening element are facilitated by the presence of a thin metal sheath on the exposed surface of the single charge or the secondary priming charge as described above.

Dans les munitions décrites précédemment, l'alésage cylindrique borgne ou puits destiné à recevoir le dispositif d'amorçage est réalisé de manière coaxiale par rapport au chargement. L'alésage cylindrique borgne peut néanmoins être réalisé suivant d'autres orientations comme par exemple de manière orthogonale par rapport à l'axe du chargement.In the ammunition described previously, the blind cylindrical bore or well intended to receive the priming device is produced coaxially with respect to the load. The blind cylindrical bore can nevertheless be made in other orientations, such as for example orthogonally to the axis of the load.

De même, dans les réalisations décrites ci-avant, l'alésage cylindrique borgne est présent au niveau du fond arrière de la munition. Celui-ci peut être également présent au niveau de la partie avant ou fond avant de la munition.Similarly, in the embodiments described above, the blind cylindrical bore is present at the level of the rear end of the ammunition. This may also be present at the level of the front part or front bottom of the ammunition.

Claims (4)

  1. A reduced sensitivity ammunition (100) comprising an explosive charge (120), the explosive charge including a blind cylindrical bore (130) intended to receive at least one priming device, the ammunition further comprising a stiffening element (140) in contact with the inner surface (130b) of the bore (130), characterized in that the stiffening element is a solid cylinder having a volume corresponding to the volume of the bore.
  2. The ammunition according to claim 1, wherein the solid cylinder is made of plastic material.
  3. A reduced sensitivity ammunition (200) comprising a main explosive charge (220) and a secondary priming charge (260) surrounded by the main explosive charge, the secondary priming charge including a blind cylindrical bore (230) intended to receive at least one priming device, the ammunition further comprising a stiffening element (240) in contact with the inner surface (230b) of the bore (230), characterized in that the stiffening element (240) is a solid cylinder (241) having a volume corresponding to the volume of the bore.
  4. The ammunition according to claim 3, wherein the solid cylinder (241) is made of plastic material.
EP20750337.6A 2019-07-15 2020-07-09 Ammunition having reduced sensitivity Active EP3999802B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1907906A FR3098899B1 (en) 2019-07-15 2019-07-15 Reduced Sensitivity Ammunition
PCT/FR2020/051229 WO2021009444A1 (en) 2019-07-15 2020-07-09 Ammunition having reduced sensitivity

Publications (2)

Publication Number Publication Date
EP3999802A1 EP3999802A1 (en) 2022-05-25
EP3999802B1 true EP3999802B1 (en) 2023-06-28

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EP20750337.6A Active EP3999802B1 (en) 2019-07-15 2020-07-09 Ammunition having reduced sensitivity

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EP (1) EP3999802B1 (en)
ES (1) ES2955807T3 (en)
FR (1) FR3098899B1 (en)
WO (1) WO2021009444A1 (en)

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FR1253957A (en) * 1960-01-08 1961-02-17 Soc Tech De Rech Ind Improvements in explosive devices
SE468687B (en) * 1991-06-18 1993-03-01 Bofors Ab SETTING AND DEVICE FOR SEALING THE EXPLOSION SPACE IN A GRANATE
US6523477B1 (en) * 1999-03-30 2003-02-25 Lockheed Martin Corporation Enhanced performance insensitive penetrator warhead

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ES2955807T3 (en) 2023-12-07
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FR3098899A1 (en) 2021-01-22

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