EP1533590B1 - Explosive ammuniton with increased resistance against shocks - Google Patents

Explosive ammuniton with increased resistance against shocks Download PDF

Info

Publication number
EP1533590B1
EP1533590B1 EP04292486A EP04292486A EP1533590B1 EP 1533590 B1 EP1533590 B1 EP 1533590B1 EP 04292486 A EP04292486 A EP 04292486A EP 04292486 A EP04292486 A EP 04292486A EP 1533590 B1 EP1533590 B1 EP 1533590B1
Authority
EP
European Patent Office
Prior art keywords
shell
ring
explosive
shimming
explosive charge
Prior art date
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.)
Expired - Lifetime
Application number
EP04292486A
Other languages
German (de)
French (fr)
Other versions
EP1533590A1 (en
Inventor
Dominique Dion
Sylvain Jayet
Régis Aumasson
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.)
Nexter Munitions SA
Original Assignee
Nexter Munitions SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nexter Munitions SA filed Critical Nexter Munitions SA
Priority to PL04292486T priority Critical patent/PL1533590T3/en
Publication of EP1533590A1 publication Critical patent/EP1533590A1/en
Application granted granted Critical
Publication of EP1533590B1 publication Critical patent/EP1533590B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/02—Fuze bodies; Fuze housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/08—Ordnance projectiles or missiles, e.g. shells
    • 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
    • F42B39/24—Shock-absorbing arrangements in packages, e.g. for shock waves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/04—Protective caps

Definitions

  • the technical field of the invention is that of explosive shells.
  • Explosive shells generally include a cast explosive charge disposed in a metal shell.
  • the envelope has an opening for casting the load. This opening is also intended to receive a rocket for the initiation of loading.
  • the shells must be able to be used in high temperature ranges (between -46 ° C and + 63 ° C). These large variations induce significant expansions of the explosive up to several millimeters (2 to 5 mm). Shells are also subjected to severe mechanical environments (falls and vibrations).
  • this shell comprises a bag-shaped case made of an elastic material, which case is interposed between the envelope of the shell and the load. Furthermore, a holding washer is applied to a surface of the explosive charge by screwing a rocket fixing ring.
  • the subject of the invention is an explosive shell comprising a fusible explosive charge disposed in an envelope comprising an opening, which shell comprises a setting means disposed in the vicinity of the opening of the shell, a wedging means comprising a ring made of an elastic material and which is interposed between a front part of the shell of the shell and the explosive charge, which ring is compressed by a compression means, shell characterized in that that the wedge ring has a flange which is housed in a groove of the envelope of the shell.
  • the compression means comprises a connecting piece screwed into the opening of the shell and which exerts a compressive stress on the wedging ring.
  • the compression means will advantageously comprise a washer interposed between the connecting piece and the wedging ring.
  • the setting ring may have a cylindrical axial bore and an outer profile matching the internal profile of the envelope.
  • the shell may comprise a priming tablet disposed in the cylindrical axial bore of the wedging ring.
  • the setting ring will be made of an elastomeric material.
  • an explosive shell 1 comprises a fusible explosive charge 2 which is cast inside a metal casing 3.
  • loading may include trinitrotoluene associated with wax and a complementary explosive such as Hexogen or Octogen. It may also include a low-sensitive explosive such as oxynitrotriazole (ONTA).
  • ONTA oxynitrotriazole
  • the casing 3 has an opening 4 which will carry a tapping 5 allowing the subsequent fixing of a firing rocket (not shown).
  • this shell comprises a means for setting the explosive charge 2 which is disposed in the vicinity of the opening 4 of the shell.
  • This wedging means comprises a ring 6 which is made of an elastic material and which is interposed between a front portion 7 of the envelope 3 of the shell and the explosive charge 2.
  • This wedging ring is made of an elastomeric material, chemically compatible with the explosive 2, and having a good aging resistance.
  • the ring may be made of a silicone rubber having a hardness of 45 Shore.
  • the figure 2 shows the ring 6 alone. It has an outer conical profile 6a which is intended to fit the inner profile 7 of the casing 3. It also comprises a cylindrical axial bore 6b which allows the loading of the shell 1 by casting and after setting up the ring 6.
  • the wedging ring 6 finally has an external cylindrical collar 6c which is intended to be housed in a groove 8 of the envelope 3 of the shell 1.
  • the flexibility of the material of the ring 6 allows its manual introduction, by elastic deformation, in the opening 4 of the shell 1 and before the casting of the load 2.
  • the flange 6c is introduced into the groove 8 and it ensures the maintenance of the ring 6 relative to the shell 1 before the casting of the load 2.
  • the casting of the explosive is then carried out through the axial bore 6b of the ring.
  • the explosive charge is poured up to the inside of the axial bore 6b.
  • the ring 6 is interposed between the explosive 2 and the inner wall 7 of the envelope 3.
  • a metal washer 9 is placed on the upper face of the ring 6 (see FIG. figure 3 ).
  • This washer 9 has an outer diameter smaller than the internal diameter of the opening 4 and carries an inner rim 9a which is positioned in the axial bore 6b of the ring.
  • the connecting piece 10 and the washer 9 constitute a compression means for the ring 6.
  • This maintenance makes it possible to avoid the appearance of defects or cracks, especially during rough handling at the lowest temperatures.
  • the connecting piece 10 has an internal bore 11 which allows the attachment of a rocket (not shown).
  • the shell is here represented in its storage configuration in which a transport ring 12 is screwed to the connecting piece 10 in place of the rocket.
  • the connecting piece 10 has a bottom 13 which isolates the explosive charge 2 moisture. This bottom will be broken during the initiation of the rocket. It will include a circular initiation of rupture allowing the projection of a portion of the bottom on the explosive charge 2 to allow its priming.
  • Such a connecting piece is the subject of the request for FR2781877 and will not be described in more detail.
  • the figure 4 shows another embodiment of a shell according to the invention.
  • This mode differs from the previous one in that a priming compact 14 is disposed in the cylindrical axial bore 6b of the setting ring 6.
  • This tablet is intended to facilitate the priming of the explosive charge 2 from the rocket (not shown)
  • Such a tablet is conventional and its composition (which depends on the nature of the explosive charge) is not the subject of the present invention.
  • mismatched, insensitive loadings are described by the FR2750131 they generally incorporate an insensitive explosive such as ONTA (oxynitrotriazole).
  • ONTA oxynitrotriazole
  • the priming tablet In known shells the priming tablet is stuck to the explosive charge. However the glue at the interface compressed / loading causes a bad transmission of the detonation. If the tablet is not glued, it may also move during handling of the shell and deteriorate by crumbling.
  • the compression of the setting ring 6 by screwing the connecting piece 10 causes a radial expansion of the ring 6 which also results in the reduction of the diameter of its bore 6b.
  • the ring 6 then ensures the firm maintenance of the priming tablet 14 in contact with the explosive charge 2.
  • This embodiment also facilitates the demilitarization of shells at the end of life. It suffices to unscrew the connecting piece 10.
  • the timing ring 6 then releases the priming tablet 14 which can easily be removed.
  • the explosive charge 2 which has been cast is meltable and is then easily removed from the shell by heating.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Description

Le domaine technique de l'invention est celui des obus explosifs.The technical field of the invention is that of explosive shells.

Les obus explosifs comprennent généralement un chargement explosif coulé disposé dans une enveloppe métallique.Explosive shells generally include a cast explosive charge disposed in a metal shell.

L'enveloppe comporte une ouverture permettant la coulée du chargement. Cette ouverture est destinée par ailleurs à recevoir une fusée permettant l'initiation du chargement.The envelope has an opening for casting the load. This opening is also intended to receive a rocket for the initiation of loading.

Les obus doivent pouvoir être mis en oeuvre dans des plages de températures importantes (entre - 46° C et + 63° C). Ces variations importantes induisent des dilatations non négligeables de l'explosif pouvant atteindre plusieurs millimètres (2 à 5 mm). Par ailleurs les obus sont soumis à des environnements mécaniques sévères (chutes et vibrations).The shells must be able to be used in high temperature ranges (between -46 ° C and + 63 ° C). These large variations induce significant expansions of the explosive up to several millimeters (2 to 5 mm). Shells are also subjected to severe mechanical environments (falls and vibrations).

La combinaison des chocs thermiques et mécaniques conduit à l'apparition de fissures dans le chargement explosif. Ces fissures peuvent conduire à une initiation prématurée lors de l'utilisation de l'obus.The combination of thermal and mechanical shocks leads to the appearance of cracks in the explosive charge. These cracks can lead to premature initiation when using the shell.

On connaît par le brevet EP1338860 un obus comprenant un chargement en explosif composite. Afin de pallier les problèmes liés à la dilatation du chargement explosif, cet obus comprend un étui en forme de sac réalisé en un matériau élastique, étui qui est interposé entre l'enveloppe de l'obus et le chargement. Par ailleurs une rondelle de maintien est appliquée sur une surface du chargement explosif par le vissage d'une bague de fixation de la fusée.We know by EP1338860 a shell comprising a composite explosive charge. In order to overcome the problems related to the expansion of the explosive charge, this shell comprises a bag-shaped case made of an elastic material, which case is interposed between the envelope of the shell and the load. Furthermore, a holding washer is applied to a surface of the explosive charge by screwing a rocket fixing ring.

Avec un tel obus il est nécessaire de charger l'obus avec la composition, de procéder à sa polymérisation par cuisson, puis d'usiner une face supérieure du chargement avant de positionner la rondelle de calage.With such a shell it is necessary to load the shell with the composition, to proceed with its polymerization by baking, and then to machine an upper face of the load before positioning the lock washer.

C'est le but de l'invention que de proposer un obus explosif dont le mode de chargement est simplifié mais qui comporte néanmoins des moyens permettant d'éviter l'apparition de fissures, dommages ou décollements dans le chargement explosif.It is the object of the invention to provide an explosive shell whose loading mode is simplified but which nevertheless includes means to prevent the occurrence of cracks, damage or detachment in the explosive charge.

Ainsi l'invention a pour objet un obus explosif comprenant un chargement explosif fusionnable disposé dans une enveloppe comportant une ouverture, obus comprennant un moyen de calage disposé au voisinage de l'ouverture de l'obus, moyen de calage comprenant une bague réalisée en un matériau élastique et qui est interposée entre une partie avant de l'enveloppe de l'obus et le chargement explosif, bague qui est comprimée par un moyen de compression, obus caractérisé en ce que la bague de calage comporte une collerette qui se loge dans une gorge de l'enveloppe de l'obus.Thus, the subject of the invention is an explosive shell comprising a fusible explosive charge disposed in an envelope comprising an opening, which shell comprises a setting means disposed in the vicinity of the opening of the shell, a wedging means comprising a ring made of an elastic material and which is interposed between a front part of the shell of the shell and the explosive charge, which ring is compressed by a compression means, shell characterized in that that the wedge ring has a flange which is housed in a groove of the envelope of the shell.

Selon un mode particulier de réalisation, le moyen de compression comprend une pièce de raccordement vissée dans l'ouverture de l'obus et qui exerce une contrainte de compression sur la bague de calage.According to a particular embodiment, the compression means comprises a connecting piece screwed into the opening of the shell and which exerts a compressive stress on the wedging ring.

Le moyen de compression comprendra avantageusement une rondelle interposée entre la pièce de raccordement et la bague de calage.The compression means will advantageously comprise a washer interposed between the connecting piece and the wedging ring.

La bague de calage pourra présenter un alésage axial cylindrique ainsi qu'un profil externe épousant le profil interne de l'enveloppe.The setting ring may have a cylindrical axial bore and an outer profile matching the internal profile of the envelope.

Selon un autre mode de réalisation de l'invention, l'obus pourra comprendre un comprimé d'amorçage disposé dans l'alésage axial cylindrique de la bague de calage.According to another embodiment of the invention, the shell may comprise a priming tablet disposed in the cylindrical axial bore of the wedging ring.

La bague de calage sera réalisée en un matériau élastomère.The setting ring will be made of an elastomeric material.

D'autres avantages de l'invention apparaîtront 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 représente en coupe longitudinale partielle une partie avant d'un obus selon l'invention après la coulée de l'explosif et avant la mise en place de la pièce de raccordement,
  • la figure 2 est une vue de la bague de calage seule,
  • la figure 3 représente ce même obus après fixation d'une pièce de raccordement destinée à recevoir une fusée,
  • la figure 4 est analogue à la figure 3 mais représente un obus suivant un autre mode de réalisation de l'invention.
Other advantages of the invention will appear on reading the following description of particular embodiments, a description given with reference to the appended drawings and in which:
  • the figure 1 represents in partial longitudinal section a front part of a shell according to the invention after the casting of the explosive and before the introduction of the connecting piece,
  • the figure 2 is a view of the wedging ring alone,
  • the figure 3 represents the same shell after fixing a connection piece intended to receive a rocket,
  • the figure 4 is analogous to the figure 3 but represents a shell according to another embodiment of the invention.

En se reportant à la figure 1, un obus explosif 1 selon l'invention comprend un chargement explosif 2 fusionnable et qui est coulé à l'intérieur d'une enveloppe métallique 3. Le chargement pourra comporter du trinitrotoluène associé à de la cire et à un explosif complémentaire tel que de l'Hexogène ou de l'Octogène. Il pourra également comporter un explosif peu sensible tel que l'oxynitrotriazole (ONTA).Referring to the figure 1 an explosive shell 1 according to the invention comprises a fusible explosive charge 2 which is cast inside a metal casing 3. loading may include trinitrotoluene associated with wax and a complementary explosive such as Hexogen or Octogen. It may also include a low-sensitive explosive such as oxynitrotriazole (ONTA).

Pour permettre la coulée, l'enveloppe 3 comporte une ouverture 4 qui portera un taraudage 5 permettant la fixation ultérieure d'une fusée d'amorçage (non représentée).To allow casting, the casing 3 has an opening 4 which will carry a tapping 5 allowing the subsequent fixing of a firing rocket (not shown).

Conformément à l'invention cet obus comprend un moyen de calage du chargement explosif 2 qui est disposé au voisinage de l'ouverture 4 de l'obus.According to the invention this shell comprises a means for setting the explosive charge 2 which is disposed in the vicinity of the opening 4 of the shell.

Ce moyen de calage comprend une bague 6 qui est réalisée en un matériau élastique et qui est interposée entre une partie avant 7 de l'enveloppe 3 de l'obus et le chargement explosif 2.This wedging means comprises a ring 6 which is made of an elastic material and which is interposed between a front portion 7 of the envelope 3 of the shell and the explosive charge 2.

Cette bague de calage est réalisée en un matériau élastomère, compatible chimiquement avec l'explosif 2, et ayant une bonne tenue au vieillissement. On pourra par exemple réaliser la bague en un caoutchouc silicone de dureté 45 Shore.This wedging ring is made of an elastomeric material, chemically compatible with the explosive 2, and having a good aging resistance. For example, the ring may be made of a silicone rubber having a hardness of 45 Shore.

La figure 2 montre la bague 6 seule. Elle présente un profil externe 6a conique qui est destiné à venir épouser le profil interne 7 de l'enveloppe 3. Elle comporte également un alésage axial 6b cylindrique qui autorise le chargement de l'obus 1 par coulée et après mise en place de la bague 6.The figure 2 shows the ring 6 alone. It has an outer conical profile 6a which is intended to fit the inner profile 7 of the casing 3. It also comprises a cylindrical axial bore 6b which allows the loading of the shell 1 by casting and after setting up the ring 6.

La bague de calage 6 comporte enfin une collerette cylindrique externe 6c qui est destinée à se loger dans une gorge 8 de l'enveloppe 3 de l'obus 1.The wedging ring 6 finally has an external cylindrical collar 6c which is intended to be housed in a groove 8 of the envelope 3 of the shell 1.

La souplesse du matériau de la bague 6 autorise son introduction manuelle, par déformation élastique, dans l'ouverture 4 de l'obus 1 et avant la coulée du chargement 2.The flexibility of the material of the ring 6 allows its manual introduction, by elastic deformation, in the opening 4 of the shell 1 and before the casting of the load 2.

La collerette 6c est introduite dans la gorge 8 et elle assure le maintien de la bague 6 par rapport à l'obus 1 avant la coulée du chargement 2.The flange 6c is introduced into the groove 8 and it ensures the maintenance of the ring 6 relative to the shell 1 before the casting of the load 2.

Une fois mis en place, le profil externe 6a conique de la bague 6 est en contact avec la paroi interne de l'enveloppe 3.Once in place, the conical outer profile 6a of the ring 6 is in contact with the inner wall of the casing 3.

On procède alors à la coulée de l'explosif au travers de l'alésage axial 6b de la bague.The casting of the explosive is then carried out through the axial bore 6b of the ring.

Le chargement explosif est coulé jusqu'à remonter à l'intérieur de l'alésage axial 6b.The explosive charge is poured up to the inside of the axial bore 6b.

Ainsi, au niveau d'une partie avant de l'obus 1, la bague 6 est interposée entre l'explosif 2 et la paroi interne 7 de l'enveloppe 3.Thus, at a front part of the shell 1, the ring 6 is interposed between the explosive 2 and the inner wall 7 of the envelope 3.

Après solidification du chargement explosif 2, on place une rondelle métallique 9 sur la face supérieure de la bague 6 (voir figure 3) .After solidification of the explosive charge 2, a metal washer 9 is placed on the upper face of the ring 6 (see FIG. figure 3 ).

Cette rondelle 9 a un diamètre externe inférieur au diamètre interne de l'ouverture 4 et elle porte un rebord interne 9a qui se positionne dans l'alésage axial 6b de la bague.This washer 9 has an outer diameter smaller than the internal diameter of the opening 4 and carries an inner rim 9a which is positioned in the axial bore 6b of the ring.

Il n'est donc pas ici nécessaire de réaliser un usinage de la face supérieure du chargement explosif après la coulée.It is therefore not necessary here to perform machining of the upper face of the explosive charge after casting.

On visse ensuite simplement une pièce de raccordement 10 dans l'ouverture 5 de l'obus 1. Lors du vissage cette pièce vient en appui contre la rondelle 9 et elle pousse cette dernière qui vient comprimer axialement la bague 6 d'environ 7 à 10 mm. La rondelle autorise le frottement de la pièce 10. Elle permet ainsi le vissage de la pièce 10 sans détérioration de la bague 6.Then simply screw a connecting piece 10 in the opening 5 of the shell 1. During screwing this piece bears against the washer 9 and pushes the latter which compresses axially the ring 6 from about 7 to 10 mm. The washer allows the friction of the part 10. It allows the screwing of the part 10 without damaging the ring 6.

La pièce de raccordement 10 et la rondelle 9 constituent un moyen de compression de la bague 6.The connecting piece 10 and the washer 9 constitute a compression means for the ring 6.

Ce moyen permet d'exercer de façon permanente et réversible une contrainte de compression sur la bague de calage 6 dans toute la plage de température d'emploi de l'obus (de -46°C à +63°C). La bague 6 transmet cette contrainte au chargement explosif 2 qui se trouve donc également maintenu.This means makes it possible to permanently and reversibly exert a compressive stress on the wedging ring 6 throughout the entire operating temperature range of the shell (from -46 ° C. to + 63 ° C.). The ring 6 transmits this constraint to the explosive charge 2 which is thus also maintained.

Ce maintien permet d'éviter l'apparition de défauts ou fissures, notamment lors de manipulations brutales aux températures les plus basses.This maintenance makes it possible to avoid the appearance of defects or cracks, especially during rough handling at the lowest temperatures.

La pièce de raccordement 10 comporte un alésage interne 11 qui permet la fixation d'une fusée (non représentée).The connecting piece 10 has an internal bore 11 which allows the attachment of a rocket (not shown).

L'obus est ici représenté dans sa configuration de stockage dans laquelle un anneau de transport 12 est vissé à la pièce de raccordement 10 à la place de la fusée.The shell is here represented in its storage configuration in which a transport ring 12 is screwed to the connecting piece 10 in place of the rocket.

La pièce de raccordement 10 comporte un fond 13 qui permet d'isoler le chargement explosif 2 de l'humidité. Ce fond sera rompu lors de l'initiation de la fusée. Il comportera une amorce de rupture circulaire permettant la projection d'une partie du fond sur le chargement explosif 2 pour permettre son amorçage.The connecting piece 10 has a bottom 13 which isolates the explosive charge 2 moisture. This bottom will be broken during the initiation of the rocket. It will include a circular initiation of rupture allowing the projection of a portion of the bottom on the explosive charge 2 to allow its priming.

Une telle pièce de raccordement fait l'objet de la demande de brevet FR2781877 et ne sera donc pas décrite plus en détails.Such a connecting piece is the subject of the request for FR2781877 and will not be described in more detail.

La figure 4 montre un autre mode de réalisation d'un obus selon l'invention.The figure 4 shows another embodiment of a shell according to the invention.

Ce mode diffère du précédent en ce qu'un comprimé d'amorçage 14 est disposé dans l'alésage axial cylindrique 6b de la bague de calage 6. Ce comprimé est destiné à venir faciliter l'amorçage du chargement explosif 2 à partir de la fusée (non représentée). Un tel comprimé est classique et sa composition (qui dépend de la nature du chargement explosif) ne fait pas l'objet de la présente invention.This mode differs from the previous one in that a priming compact 14 is disposed in the cylindrical axial bore 6b of the setting ring 6. This tablet is intended to facilitate the priming of the explosive charge 2 from the rocket (not shown) Such a tablet is conventional and its composition (which depends on the nature of the explosive charge) is not the subject of the present invention.

Il est plus particulièrement utilisé lorsque le chargement explosif présente une sensibilité réduite aux agressions (chargement d'un obus qualifié de MURAT comme MUnition à Risques ATténués).It is more particularly used when the explosive charge has a reduced sensitivity to the attacks (loading of a MURAT qualified shell like MU nition to R isques AT tenuous).

Ces chargements fusionnables peu sensibles sont décrits par le brevet FR2750131 , ils incorporent généralement un explosif insensible comme l'ONTA (oxynitrotriazole).These mismatched, insensitive loadings are described by the FR2750131 they generally incorporate an insensitive explosive such as ONTA (oxynitrotriazole).

Dans les obus connus le comprimé d'amorçage est collé au chargement explosif. Cependant la colle à l'interface comprimé/chargement entraîne une mauvaise transmission de la détonation. Si le comprimé n'est pas collé, il risque par ailleurs de se déplacer lors des manipulations de l'obus et de se détériorer par effritement.In known shells the priming tablet is stuck to the explosive charge. However the glue at the interface compressed / loading causes a bad transmission of the detonation. If the tablet is not glued, it may also move during handling of the shell and deteriorate by crumbling.

Dans l'obus selon l'invention, la compression de la bague de calage 6 par le vissage de la pièce de raccordement 10 entraîne une expansion radiale de la bague 6 qui se traduit aussi par la réduction du diamètre de son alésage 6b. En plus du calage du chargement explosif 2, la bague 6 assure alors le maintien ferme du comprimé d'amorçage 14 au contact du chargement explosif 2.In the shell according to the invention, the compression of the setting ring 6 by screwing the connecting piece 10 causes a radial expansion of the ring 6 which also results in the reduction of the diameter of its bore 6b. In addition to the setting of the explosive charge 2, the ring 6 then ensures the firm maintenance of the priming tablet 14 in contact with the explosive charge 2.

Il n'est donc plus nécessaire grâce à invention de coller le comprimé d'amorçage 14. On augmente ainsi la fiabilité de l'obus 1.It is therefore no longer necessary thanks to the invention to glue the priming tablet 14. This increases the reliability of the shell 1.

Avec ce mode de réalisation de l'invention, et afin de faciliter l'allumage du chargement 2 par le comprimé 14, il est bien entendu nécessaire de réaliser un usinage de la face supérieure du chargement explosif après la coulée.With this embodiment of the invention, and to facilitate the ignition of the load 2 by the tablet 14, it is of course necessary to perform a machining of the upper face of the explosive charge after casting.

Ce mode de réalisation permet également de faciliter la démilitarisation des obus en fin de vie. Il suffit en effet de dévisser la pièce de raccordement 10.This embodiment also facilitates the demilitarization of shells at the end of life. It suffices to unscrew the connecting piece 10.

La bague de calage 6 libère alors le comprimé d'amorçage 14 qui peut facilement être retiré. Le chargement explosif 2 qui a été mis en oeuvre par coulée est fusionnable et il est ensuite retiré aisément de l'obus par chauffage.The timing ring 6 then releases the priming tablet 14 which can easily be removed. The explosive charge 2 which has been cast is meltable and is then easily removed from the shell by heating.

Claims (6)

  1. An explosive shell (1) comprising a fusible explosive load (2) placed in a casing (3) incorporating an opening (4), such shell comprising shimming means (6) placed in the vicinity of the shell opening (4), such shimming means comprising a ring (6) made of an elastic material placed between a front part of the shell casing (3) and the explosive load (2), such ring being compressed by compression means (9, 10), shell wherein the shimming ring (6) incorporates a flange (6c) housed in a groove (8) made in the casing (3) of the shell (1).
  2. An explosive shell according to Claim 1, wherein the compression means comprise a linking part (10) screwed in the shell opening (4) and exerting a compressive stress on the shimming ring (6).
  3. An explosive shell according to Claim 2, wherein the compression means comprise a washer (9) placed between the linking part (10) and the shimming ring (6).
  4. An explosive shell according to one of Claims 1 to 3, wherein the shimming ring (6) has a cylindrical axial bore (6b) as well as an external profile (6a) matching the internal profile (7) of the casing (3).
  5. An explosive shell according to Claim 4, wherein it comprises a tablet of primer (14) placed in the cylindrical axial bore (6b) in the shimming ring (6).
  6. An explosive shell according to one of Claims 1 to 5, wherein the shimming ring (6) is made of an elastomer material.
EP04292486A 2003-11-17 2004-10-20 Explosive ammuniton with increased resistance against shocks Expired - Lifetime EP1533590B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04292486T PL1533590T3 (en) 2003-11-17 2004-10-20 Explosive ammuniton with increased resistance against shocks

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0313523 2003-11-17
FR0313523A FR2862378B1 (en) 2003-11-17 2003-11-17 EXPLOSIVE OBUS HAVING IMPROVED SHOCK RESISTANCE

Publications (2)

Publication Number Publication Date
EP1533590A1 EP1533590A1 (en) 2005-05-25
EP1533590B1 true EP1533590B1 (en) 2012-06-20

Family

ID=34430017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04292486A Expired - Lifetime EP1533590B1 (en) 2003-11-17 2004-10-20 Explosive ammuniton with increased resistance against shocks

Country Status (10)

Country Link
US (1) US7174834B2 (en)
EP (1) EP1533590B1 (en)
AU (1) AU2004226912B8 (en)
CA (1) CA2484782C (en)
DK (1) DK1533590T3 (en)
ES (1) ES2389652T3 (en)
FR (1) FR2862378B1 (en)
NO (1) NO338258B1 (en)
PL (1) PL1533590T3 (en)
ZA (1) ZA200408928B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2924494B1 (en) 2007-12-03 2013-06-21 Nexter Munitions METHOD FOR DISCHARGING A MUNITION BODY AND TOOLS FOR IMPLEMENTING SAID METHOD
CN101592462B (en) * 2009-07-02 2014-04-16 蒙宝林 Process for charging and packing industrial powder explosive cartridge and vibratory charging machine
US9459080B2 (en) 2013-03-15 2016-10-04 Hunting Titan, Inc. Venting system for a jet cutter in the event of deflagration
KR101399149B1 (en) * 2014-01-28 2014-05-27 최홍준 Ammunition container
DE102016008391B4 (en) 2016-07-09 2018-05-24 Diehl Defence Gmbh & Co. Kg bullet
KR101929667B1 (en) * 2017-06-14 2018-12-14 (주)수아 Lifting Plug for High Explosives Having Improved Insensitive Performance
CN110030884B (en) * 2019-04-08 2021-08-03 南京理工大学 Split type mortar shell capable of being quickly connected and assembling method thereof

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599570A (en) * 1969-08-28 1971-08-17 Thiokol Chemical Corp Ammunition antidefuzing device
US3978795A (en) * 1972-07-05 1976-09-07 Dynamit Nobel Aktiengesellschaft Retaining ring apparatus
US4365556A (en) * 1980-10-06 1982-12-28 The United States Of America As Represented By The Secretary Of The Army Method and system for preventing base separation of cast explosives in projectiles
CA1264123A (en) * 1981-12-08 1990-01-02 John Stuart Mcveagh Hollow charge and liner assemblage
AU602870B2 (en) * 1985-10-22 1990-11-01 Bae Systems Plc Explosive projectiles
IN169266B (en) * 1985-10-22 1991-09-21 Royal Ordnance Plc
DE3929020A1 (en) * 1989-09-01 1991-03-21 Diehl Gmbh & Co Detonator for shell - which hollow charge booster and plastic shock absorber ring
US5133259A (en) * 1990-05-23 1992-07-28 Olin Corporation Seal ring for pyrotechnically initiated projectile
SE468687B (en) * 1991-06-18 1993-03-01 Bofors Ab SETTING AND DEVICE FOR SEALING THE EXPLOSION SPACE IN A GRANATE
DE4123649C2 (en) * 1991-07-17 1993-11-11 Rheinmetall Gmbh Ejection device
FR2682754B1 (en) * 1991-10-22 1995-03-03 Giat Ind Sa CARGO SHELL.
SE501121C2 (en) * 1992-01-29 1994-11-21 Bofors Ab Ammunition
DE19535218C1 (en) * 1995-09-22 1997-02-27 Diehl Gmbh & Co Ballistic projectile
DE10207209A1 (en) * 2002-02-21 2003-09-11 Rheinmetall W & M Gmbh Process for producing a large-caliber explosive projectile and an explosive projectile produced by this process
US7025000B1 (en) * 2002-04-11 2006-04-11 The United States Of America As Represented By The Secretary Of The Army Mechanism for reducing the vulnerability of high explosive loaded munitions to unplanned thermal stimuli

Also Published As

Publication number Publication date
EP1533590A1 (en) 2005-05-25
ES2389652T3 (en) 2012-10-30
NO338258B1 (en) 2016-08-08
DK1533590T3 (en) 2012-07-23
CA2484782C (en) 2012-10-02
CA2484782A1 (en) 2005-05-17
FR2862378B1 (en) 2007-11-23
PL1533590T3 (en) 2012-11-30
AU2004226912A1 (en) 2005-06-02
FR2862378A1 (en) 2005-05-20
AU2004226912B2 (en) 2010-01-14
NO20044980L (en) 2005-05-18
ZA200408928B (en) 2005-08-31
US20050155512A1 (en) 2005-07-21
AU2004226912B8 (en) 2010-05-06
US7174834B2 (en) 2007-02-13

Similar Documents

Publication Publication Date Title
EP1092940B1 (en) Igniting device for a propellant charge
WO1994020814A1 (en) Telescoped round-type ammunition case
WO2003027562A1 (en) Quick coupling device
FR2473118A1 (en) DEVICE FOR MOUNTING AN INJECTOR ON AN INTERNAL COMBUSTION ENGINE
EP1533590B1 (en) Explosive ammuniton with increased resistance against shocks
FR2771493A1 (en) PROPULSIVE CHARGE SOCKET
EP1355120B1 (en) Device for provisionally connecting and pyrotechnically separating two elements, with no rupture
FR2892491A1 (en) CONNECTING DEVICE WITH SOLDER BODY
FR2682754A1 (en) OBUS CARGO.
EP0471617A1 (en) Sealing strip for arrow-type projectile
FR2930026A1 (en) MUNITION OF BIG SIZE CHARGED BY THE BACK
FR2482251A1 (en) Nut secured to corrugated pipe - uses locking ring in groove between corrugations engaging in nut bore
FR3068456B1 (en) SHAPED LOAD
EP0977005B1 (en) Detonating device for an explosive shell
FR3100610A1 (en) Anti-aircraft shell for telescoped double-release ammunition
EP0526316B1 (en) Ammunition, particularly of the telescoped type
EP0435830A1 (en) Method for manufacturing cartridge cases for firearms and cases obtained thereby
FR3085187A1 (en) A TURBOCHARGER HAVING A FLEXIBLE CONTACT AREA BETWEEN A BEARING SLEEVE AND A FIXED COMPRESSOR PART.
FR2805482A1 (en) Crown wheel and case for motor vehicle differential has mating splines on inner surface of gar ring and outer surface of casing
EP1649472B1 (en) Electromagnetic valve, method for attaching a solenoid to said electromagnetic valve, and method for detaching the solenoid from this electromagnetic valve
EP2219007B1 (en) Method of fixing a plastic projectile on a metallic case and projectile permitting the application of said method
FR2789733A1 (en) SOLID PROPERGOL ROCKET MOTOR WITH IMPROVED SAFETY AGAINST THERMAL AGGRESSIONS
EP1693645A1 (en) Artillery projectile having a driving band
EP1363103A1 (en) Shaped charge and assembly method therefore
FR2888923A1 (en) Munition with case, projectile and propellant charge has igniter fitted to bore in base of case with threaded or force fit

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

17P Request for examination filed

Effective date: 20051121

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NEXTER MUNITIONS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 563301

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120715

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602004038277

Country of ref document: DE

Effective date: 20120823

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20120402066

Country of ref document: GR

Effective date: 20120915

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2389652

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20121030

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 563301

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120620

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120620

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 12547

Country of ref document: SK

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120620

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120620

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120620

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20121022

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20130321

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121031

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602004038277

Country of ref document: DE

Effective date: 20130321

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121031

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121031

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121020

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120920

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121020

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041020

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20180924

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: RO

Payment date: 20181022

Year of fee payment: 15

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20191101

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 12547

Country of ref document: SK

Effective date: 20191020

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191020

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200506

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191020

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191020

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20210922

Year of fee payment: 18

Ref country code: FI

Payment date: 20210921

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20210923

Year of fee payment: 18

Ref country code: GB

Payment date: 20210922

Year of fee payment: 18

Ref country code: TR

Payment date: 20210928

Year of fee payment: 18

Ref country code: BE

Payment date: 20210924

Year of fee payment: 18

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20221031

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20221031

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20221020

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221020

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221020

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CZ

Payment date: 20230926

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20230922

Year of fee payment: 20

Ref country code: FR

Payment date: 20230920

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20231102

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20230920

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221020

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221020