EP4025865A1 - Anti-aircraft shell for telescoped ammunition with double unlocking - Google Patents

Anti-aircraft shell for telescoped ammunition with double unlocking

Info

Publication number
EP4025865A1
EP4025865A1 EP20785750.9A EP20785750A EP4025865A1 EP 4025865 A1 EP4025865 A1 EP 4025865A1 EP 20785750 A EP20785750 A EP 20785750A EP 4025865 A1 EP4025865 A1 EP 4025865A1
Authority
EP
European Patent Office
Prior art keywords
projectiles
sub
skirt
gyrostabilized
aircraft shell
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.)
Pending
Application number
EP20785750.9A
Other languages
German (de)
French (fr)
Inventor
Chris Carr
Titoman VOILLOT
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.)
CTA International SAS
Original Assignee
CTA International SAS
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 CTA International SAS filed Critical CTA International SAS
Publication of EP4025865A1 publication Critical patent/EP4025865A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F42B12/56—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 for dispensing discrete solid bodies
    • F42B12/58—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles
    • F42B12/62—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles the submissiles being ejected parallel to the longitudinal axis of the projectile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F42B10/26—Stabilising arrangements using spin
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/045—Cartridges, i.e. cases with charge and missile of telescopic type

Definitions

  • TITLE Anti-aircraft shell for telescoped ammunition with double unlocking
  • the technical sector of the present invention is that of anti-aircraft shells intended to disperse sub-projectiles on the trajectory.
  • Anti-aircraft shells generating a shower of sub-projectiles on the trajectory are well known.
  • these sub-projectiles consist of balls or metal cylinders.
  • patent EP-2578987 describes a medium-caliber anti-aircraft shell consisting of a warhead extended by a casing and a base containing a stripping charge, joined together by securing means.
  • the sub-projectiles are integrated into the casing and during the operation of the unloading charge the sub-projectiles are released.
  • the main drawback of this shell lies in the fact that the separation of the warhead from the casing and the separation of the casing from the base is achieved by a single means. As a result, it is difficult to control the operation of this shell.
  • the aim of the present invention is to provide an anti-aircraft shell whose operation is carried out in two stages in order to make the dispersion of the sub-projectiles more reliable.
  • the subject of the invention is therefore a gyrostabilized medium-caliber anti-aircraft shell intended to produce a shower of sub-projectiles, characterized in that it comprises a warhead extended by a skirt and a central axis delimiting with the skirt a housing containing sub-projectiles, a casing covering the skirt fixed using an upstream thread at its front end on a shoulder of the ogive and fixed by means of a downstream thread at its rear end on a base containing a stripping charge, translation means being interposed between the base and the skirt in order to ensure the shearing of the upstream and downstream threads.
  • the translation means are arranged in the casing and are actuated by the initiation of the stripping load.
  • the shell comprises a jacket arranged in the housing and adjusted to the internal diameter of the skirt, the sub-projectiles being arranged in said jacket.
  • the sleeve is disposed upstream in abutment against a shoulder of the ogive and downstream against the translation means.
  • the translation means is formed on the one hand by a finger engaged on the free end of the central axis of the ogive and on the other hand by a disc bearing against the free end of the skirt.
  • the translation of the finger causes the shearing of the upstream thread and the translation of the disc causes the shearing of the downstream thread.
  • the shell comprises at least one ring disposed to bear both against the rear end of the sleeve and against the sub-projectiles.
  • the jacket is formed by a set of petals for retaining the sub-projectiles.
  • the sub-projectiles consist of cylinders made of heavy material.
  • a very first advantage of the invention lies in the fact that the separation of the various elements is carried out successively. In fact, the ogive is first separated from the casing and then from the casing from the base.
  • Another advantage of the present invention lies in the that the unlocking device gives the casing greater strength than that of conventional telescoped ammunition casings. Indeed, the sequential double unlocking device eliminates the need to include a mechanical weakening in the casing to allow the dispersion of the submunitions.
  • Another advantage of the present invention lies in a particular packaging of the sub-projectiles.
  • Yet another advantage of the present invention lies in the fact that the shell has a profile well suited to ammunition of this type.
  • Yet another advantage of the present invention lies in the use of the warhead as a means of confining the sub-projectiles.
  • FIG 1 shows a longitudinal section of the shell.
  • the shell according to the invention responds to this problem and therefore relates to an anti-aircraft shell 1 of medium caliber gyrostabilized intended to produce a shower of sub-projectiles.
  • This shell 1 comprises an ogive 2 extended by a skirt 3 and a central axis 4.
  • the skirt and the axis delimit a housing 5 containing sub-projectiles 6.
  • a casing 7 covers the skirt 3 over its entire length according to a contact. respondent and is fixed thereto using an upstream thread 8 at its front end on a shoulder 9 of the ogive 2.
  • the casing 7 is fixed to a base 10 using a downstream thread 11 at its rear end.
  • the sub-projectiles 6 can be formed by cylinders of heavy material.
  • a seal 12 is placed in a groove in the shoulder 9. The same is true between the casing and the base where this base 10 comes into abutment. against a rear seal 13 in a chamfer made at the free end of the envelope.
  • the pellet 10 contains a stripping charge 14 in conjunction with an initiator 20.
  • the shell 1 incorporates translation means 15 of the sub-projectiles 6 by being interposed between the base 10 and the skirt.
  • These translation means 15 are formed on the one hand by a finger 16 engaged on the free end of the central axis
  • the sub-projectiles 6 are arranged in a jacket 18 itself arranged in the housing delimited by the skirt 3, the jacket being adjusted to the internal diameter of this skirt 3.
  • This jacket 18 is produced in a easily breakable and dispersible material.
  • the sleeve 18 is disposed upstream in abutment against a shoulder 19 of the ogive 2 and downstream against the translation means 15 by means of at least one washer 20 disposed in abutment both against the 'rear end of the jacket 3 and against the sub-projectiles 6.
  • This jacket 18 may be constituted by a set of petals for maintaining the sub-projectiles 6.
  • the finger 16 causes the shearing of the upstream thread 8 during its translation, thus causing a first unlocking of the ogive 2 and of the casing 7 and the disc 17 causes the shearing of the downstream thread 11, resulting in thus a second unlocking of the casing 7 and of the base 10.
  • the operation is as follows.
  • the initiator 20 initiates the stripping charge 14 on the trajectory according to a predefined firing sequence.
  • the thrust generated by the load 14 first actuates the rod 16 to shear the upstream thread 8, then then actuates the disc
  • the sub-projectiles 6 continue on their trajectory in the form of a shower of a predefined volume.
  • the 6 sub-projectiles disperse in space according to the laws of general mechanics, i.e. the solid angle of the dispersion cone is almost entirely determined by the speed of rotation of the shell which creates centrifugal acceleration.
  • the speed of rotation of a telescoped ammunition shell has the advantage of not decreasing by more than 20% over its entire trajectory.
  • the solid angle of the dispersion cone is conventionally between 12 and 15 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Connection Of Plates (AREA)

Abstract

Disclosed is a gyrostabilised medium-calibre anti-aircraft shell (1) intended to produce a spread of sub-projectiles (6), characterised in that it comprises a warhead (2) extended by a skirt (3) and a central axis (4) delimiting, with the skirt (3), a cavity (5) containing the sub-projectiles (6), a casing (7) covering the skirt (3) fastened by means of an upstream thread (8) at its front end to a shoulder (19) of the warhead (2) and fastened by means of a downstream thread (11) at its rear end to a cup (10) containing an ejection charge (14), translational movement means (15) being interposed between the cup (10) and the skirt (3) in order to ensure the shearing of the upstream thread (8) and the downstream thread (11).

Description

DESCRIPTION DESCRIPTION
TITRE : Obus anti-aérien pour munition télescopée à double déverrouiilâge TITLE: Anti-aircraft shell for telescoped ammunition with double unlocking
DOMAINE DE L' INVENTION FIELD OF THE INVENTION
Le secteur technique de la présente invention est celui des obus anti-aériens destinés à disperser sur trajectoire des sous-projectiles. The technical sector of the present invention is that of anti-aircraft shells intended to disperse sub-projectiles on the trajectory.
ETAT DE LA TECHNIQUE STATE OF THE ART
Les obus anti-aériens engendrant sur trajectoire une gerbe de sous-projectiles sont bien connus. Généralement, ces sous- projectiles sont constitués par des billes ou des cylindres métalliques . Anti-aircraft shells generating a shower of sub-projectiles on the trajectory are well known. Generally, these sub-projectiles consist of balls or metal cylinders.
On peut par exemple se référer au brevet EP-2578987 qui décrit un obus anti-aérien de moyen calibre constitué d'une ogive prolongée par une enveloppe et un culot renfermant une charge de dépotage, réunis ensemble par des moyens de solidarisation . Les sous-projectiles sont intégrés dans l'enveloppe et lors du fonctionnement de la charge de dépotage les sous-projectiles sont libérés. Reference may for example be made to patent EP-2578987 which describes a medium-caliber anti-aircraft shell consisting of a warhead extended by a casing and a base containing a stripping charge, joined together by securing means. The sub-projectiles are integrated into the casing and during the operation of the unloading charge the sub-projectiles are released.
L'inconvénient principal de cet obus réside dans le fait que la séparation de l'ogive de l'enveloppe et la séparation de l'enveloppe du culot est réalisé par un moyen unique. Il en résulte qu'il est difficile de maîtriser le fonctionnement de cet obus. The main drawback of this shell lies in the fact that the separation of the warhead from the casing and the separation of the casing from the base is achieved by a single means. As a result, it is difficult to control the operation of this shell.
EXPOSE DE L' INVENTION DISCLOSURE OF THE INVENTION
Le but de la présente invention est de fournir un obus anti-aérien dont le fonctionnement est réalisé en deux temps afin de fiabiliser la dispersion des sous-projectiles. The aim of the present invention is to provide an anti-aircraft shell whose operation is carried out in two stages in order to make the dispersion of the sub-projectiles more reliable.
L'invention a donc pour objet un obus anti-aérien de moyen calibre gyrostabilisé destiné à produire une gerbe de sous- projectiles, caractérisé en ce qu'il comprend une ogive prolongée par une jupe et un axe central délimitant avec la jupe un logement renfermant les sous-projectiles, une enveloppe coiffant la jupe fixée à l'aide d'un filetage amont à son extrémité avant sur un épaulement de l'ogive et fixée à l'aide d'un filetage aval à son extrémité arrière sur un culot renfermant une charge de dépotage, des moyens de translation étant intercalés entre le culot et la jupe afin d'assurer le cisaillement des filetages amont et aval. The subject of the invention is therefore a gyrostabilized medium-caliber anti-aircraft shell intended to produce a shower of sub-projectiles, characterized in that it comprises a warhead extended by a skirt and a central axis delimiting with the skirt a housing containing sub-projectiles, a casing covering the skirt fixed using an upstream thread at its front end on a shoulder of the ogive and fixed by means of a downstream thread at its rear end on a base containing a stripping charge, translation means being interposed between the base and the skirt in order to ensure the shearing of the upstream and downstream threads.
Selon une caractéristique de l'invention, les moyens de translation sont disposés dans l'enveloppe et sont actionnés par l'initiation de la charge de dépotage. According to one characteristic of the invention, the translation means are arranged in the casing and are actuated by the initiation of the stripping load.
Selon une autre caractéristique de l'invention, l'obus comprend une chemise disposée dans le logement et ajustée au diamètre interne de la jupe, les sous-projectiles étant disposés dans ladite chemise. According to another characteristic of the invention, the shell comprises a jacket arranged in the housing and adjusted to the internal diameter of the skirt, the sub-projectiles being arranged in said jacket.
Avantageusement, la chemise est disposée en amont en butée contre un épaulement de l'ogive et en aval contre le moyen de translation . Advantageously, the sleeve is disposed upstream in abutment against a shoulder of the ogive and downstream against the translation means.
Selon encore une autre caractéristique de l'invention, le moyen de translation est constitué d'une part par un doigt en prise sur l'extrémité libre de l'axe central de l'ogive et d'autre part par un disque en appui contre l'extrémité libre de la jupe. According to yet another characteristic of the invention, the translation means is formed on the one hand by a finger engaged on the free end of the central axis of the ogive and on the other hand by a disc bearing against the free end of the skirt.
Selon encore une autre caractéristique de l'invention, la translation du doigt entraine le cisaillement du filetage amont et la translation du disque entraine le cisaillement du filetage aval. According to yet another characteristic of the invention, the translation of the finger causes the shearing of the upstream thread and the translation of the disc causes the shearing of the downstream thread.
Selon encore une autre caractéristique de l'invention, l'obus comporte au moins une bague disposée en appui à la fois contre l'extrémité arrière de la chemise et contre les sous- projectiles . According to yet another characteristic of the invention, the shell comprises at least one ring disposed to bear both against the rear end of the sleeve and against the sub-projectiles.
Selon encore une autre caractéristique de l'invention, la chemise est constituée par un ensemble de pétales de maintien des sous-projectiles. According to yet another characteristic of the invention, the jacket is formed by a set of petals for retaining the sub-projectiles.
Avantageusement, les sous-projectiles sont constitués par des cylindres en matériau lourd. Advantageously, the sub-projectiles consist of cylinders made of heavy material.
Un tout premier avantage de l'invention réside dans le fait que la séparation des différents éléments est réalisée successivement. En effet, on réalise d'abord la séparation de l'ogive de l'enveloppe puis de l'enveloppe du culot. A very first advantage of the invention lies in the fact that the separation of the various elements is carried out successively. In fact, the ogive is first separated from the casing and then from the casing from the base.
Un autre avantage de la présente invention réside dans le fait que le dispositif de déverrouillage confère à l'enveloppe une robustesse supérieure à celle des enveloppes classiques de munitions télescopées. En effet, le dispositif de double déverrouillage séquentiel supprime la nécessité d'inclure une fragilisation mécanique dans l'enveloppe pour permettre la dispersion des sous-munitions. Another advantage of the present invention lies in the that the unlocking device gives the casing greater strength than that of conventional telescoped ammunition casings. Indeed, the sequential double unlocking device eliminates the need to include a mechanical weakening in the casing to allow the dispersion of the submunitions.
Un autre avantage de la présente invention réside dans un conditionnement particulier des sous-projectiles. Another advantage of the present invention lies in a particular packaging of the sub-projectiles.
Un autre avantage encore de la présente invention réside dans le fait que l'obus présente un profil bien adapté aux munitions de ce type. Yet another advantage of the present invention lies in the fact that the shell has a profile well suited to ammunition of this type.
Un autre avantage encore de la présente invention réside dans l'utilisation de l'ogive comme moyen de confinement des sous-projectiles. Yet another advantage of the present invention lies in the use of the warhead as a means of confining the sub-projectiles.
BREVE DESCRIPTION DES DESSINS BRIEF DESCRIPTION OF THE DRAWINGS
D'autres caractéristiques, avantages et détails de l'invention seront mieux compris à la lecture du complément de description qui va suivre en rapport avec un dessin dans lequel : Other characteristics, advantages and details of the invention will be better understood on reading the additional description which follows in connection with a drawing in which:
[Fig 1] représente une coupe longitudinale de l'obus. [Fig 1] shows a longitudinal section of the shell.
DESCRIPTION DETAILLEE DE MODES DE REALISATION DE DETAILED DESCRIPTION OF EMBODIMENTS OF
L' INVENTION THE INVENTION
L'invention va maintenant être décrite avec plus de détails. Comme indiqué précédemment, il s'agit de produire une gerbe de sous-projectiles vers une cible du type missile ou autres à l'aide d'un obus anti-aérien. Cet obus contient un grand nombre de sous-projectiles qu'il s'agit d'éjecter avec le maximum d'efficacité. The invention will now be described in more detail. As indicated previously, it is a question of producing a shower of sub-projectiles towards a target of the missile or other type using an anti-aircraft shell. This shell contains a large number of sub-projectiles which must be ejected with maximum efficiency.
L'obus selon l'invention répond à cette problématique et concerne donc un obus anti-aérien 1 de moyen calibre gyrostabilisé destiné à produire une gerbe de sous- projectiles . The shell according to the invention responds to this problem and therefore relates to an anti-aircraft shell 1 of medium caliber gyrostabilized intended to produce a shower of sub-projectiles.
Cet obus 1 comprend une ogive 2 prolongée par une jupe 3 et un axe central 4. La jupe et l'axe délimitent un logement 5 renfermant des sous-projectiles 6. Une enveloppe 7 vient coiffer la jupe 3 sur toute sa longueur selon un contact intime et est fixée à celle-ci à l'aide d'un filetage amont 8 à son extrémité avant sur un épaulement 9 de l'ogive 2. L'enveloppe 7 est fixée sur un culot 10 à l'aide d'un filetage aval 11 à son extrémité arrière. This shell 1 comprises an ogive 2 extended by a skirt 3 and a central axis 4. The skirt and the axis delimit a housing 5 containing sub-projectiles 6. A casing 7 covers the skirt 3 over its entire length according to a contact. respondent and is fixed thereto using an upstream thread 8 at its front end on a shoulder 9 of the ogive 2. The casing 7 is fixed to a base 10 using a downstream thread 11 at its rear end.
Les sous-projectiles 6 peuvent être constitués par des cylindres en matériau lourd. The sub-projectiles 6 can be formed by cylinders of heavy material.
Pour parfaire l'étanchéité de l'enveloppe 7 par rapport à l'ogive 2 un joint 12 est disposé dans une rainure de 1'épaulement 9. Il en est de même entre l'enveloppe et le culot où ce culot 10 vient en butée contre un joint arrière 13 dans un chanfrein pratiqué au niveau de l'extrémité libre de 1'enveloppe . To perfect the tightness of the casing 7 with respect to the ogive 2, a seal 12 is placed in a groove in the shoulder 9. The same is true between the casing and the base where this base 10 comes into abutment. against a rear seal 13 in a chamfer made at the free end of the envelope.
Le culot 10 renferme une charge de dépotage 14 en liaison avec un initiateur 20. The pellet 10 contains a stripping charge 14 in conjunction with an initiator 20.
L'obus 1 intègre des moyens de translation 15 des sous- projectiles 6 en étant intercalés entre le culot 10 et la jupeThe shell 1 incorporates translation means 15 of the sub-projectiles 6 by being interposed between the base 10 and the skirt.
3 afin d'assurer le cisaillement des filetages amont 8 et aval 11. Ces moyens de translation 15 sont actionnés par l'initiation de la charge de dépotage 14 comme cela sera expliqué ci-après. 3 in order to ensure the shearing of the upstream 8 and downstream 11 threads. These translation means 15 are actuated by the initiation of the stripping load 14 as will be explained below.
Ces moyens de translation 15 sont constitués d'une part par un doigt 16 en prise sur l'extrémité libre de l'axe centralThese translation means 15 are formed on the one hand by a finger 16 engaged on the free end of the central axis
4 de l'ogive 2 et d'autre part par un disque 17 en appui contre l'extrémité libre de la jupe 3. Il va de soi que le doigt 16 peut être inséré libre dans un perçage pratiqué dans l'extrémité libre de l'axe central 4. 4 of the ogive 2 and on the other hand by a disc 17 bearing against the free end of the skirt 3. It goes without saying that the finger 16 can be inserted free in a hole made in the free end of the 'central axis 4.
Sur la figure, on voit que les sous-projectiles 6 sont disposés dans une chemise 18 elle-même disposée dans le logement délimité par la jupe 3, la chemise étant ajustée au diamètre interne de cette jupe 3. Cette chemise 18 est réalisée dans un matériau facilement sécable et dispersable. In the figure, it can be seen that the sub-projectiles 6 are arranged in a jacket 18 itself arranged in the housing delimited by the skirt 3, the jacket being adjusted to the internal diameter of this skirt 3. This jacket 18 is produced in a easily breakable and dispersible material.
On voit encore que la chemise 18 est disposée en amont en butée contre un épaulement 19 de l'ogive 2 et en aval contre les moyens de translation 15 par l'intermédiaire d'au moins une rondelle 20 disposée en appui à la fois contre l'extrémité arrière de la chemise 3 et contre les sous-projectiles 6. Cette chemise 18 peut être constituée par un ensemble de pétales de maintien des sous-projectiles 6. Avantageusement selon l'invention, le doigt 16 entraine le cisaillement du filetage amont 8 lors de sa translation, provoquant ainsi un premier déverrouillage de l'ogive 2 et de l'enveloppe 7 et le disque 17 provoque le cisaillement du filetage aval 11, entraînant ainsi un second déverrouillage de l'enveloppe 7 et du culot 10. It can also be seen that the sleeve 18 is disposed upstream in abutment against a shoulder 19 of the ogive 2 and downstream against the translation means 15 by means of at least one washer 20 disposed in abutment both against the 'rear end of the jacket 3 and against the sub-projectiles 6. This jacket 18 may be constituted by a set of petals for maintaining the sub-projectiles 6. Advantageously according to the invention, the finger 16 causes the shearing of the upstream thread 8 during its translation, thus causing a first unlocking of the ogive 2 and of the casing 7 and the disc 17 causes the shearing of the downstream thread 11, resulting in thus a second unlocking of the casing 7 and of the base 10.
Ce double déverrouillage assure la séparation des trois éléments constituant l'obus 1 et la libération des sous- projectiles 6. This double unlocking ensures the separation of the three elements constituting the shell 1 and the release of the sub-projectiles 6.
Le fonctionnement est le suivant. The operation is as follows.
Lors du lancement de l'obus à l'approche d'une menace, l'initiateur 20 initie la charge de dépotage 14 sur la trajectoire selon une séquence de tir prédéfinie. La poussée engendrée par la charge 14 actionne d'abord la tige 16 pour cisailler le filetage amont 8, puis actionne ensuite le disqueWhen the shell is launched on the approach of a threat, the initiator 20 initiates the stripping charge 14 on the trajectory according to a predefined firing sequence. The thrust generated by the load 14 first actuates the rod 16 to shear the upstream thread 8, then then actuates the disc
17 qui à son tour provoque le cisaillement du filetage aval 11. Les trois éléments constituant l'obus 1, le culot 10 l'enveloppe 7 et l'ogive 2 sont ainsi séparés en éloignement l'un de l'autre. Puis intervient la séparation de la chemise17 which in turn causes the downstream thread 11 to shear. The three elements constituting the shell 1, the base 10, the casing 7 and the ogive 2 are thus separated away from one another. Then comes the separation of the shirt
18 contenant les sous-projectiles 6 et de l'ogive 2 sous l'effet de la différence de masse. 18 containing the sub-projectiles 6 and the warhead 2 under the effect of the mass difference.
Par suite de la désintégration de la chemise 18, les sous- projectiles 6 continuent sur leur trajectoire sous la forme d'une gerbe d'un volume prédéfini. As a result of the disintegration of the jacket 18, the sub-projectiles 6 continue on their trajectory in the form of a shower of a predefined volume.
Les sous-projectiles 6 se dispersent dans l'espace selon les lois de la mécanique générale, c'est-à-dire que l'angle solide du cône de dispersion est presque entièrement déterminé par la vitesse de rotation de l'obus qui crée l'accélération centrifuge. Or, la vitesse de rotation d'un obus de munition télescopée présente l'avantage de ne pas décroître de plus de 20% sur toute sa trajectoire. The 6 sub-projectiles disperse in space according to the laws of general mechanics, i.e. the solid angle of the dispersion cone is almost entirely determined by the speed of rotation of the shell which creates centrifugal acceleration. However, the speed of rotation of a telescoped ammunition shell has the advantage of not decreasing by more than 20% over its entire trajectory.
L'angle solide du cône de dispersion est, de manière classique, compris entre 12 et 15°. The solid angle of the dispersion cone is conventionally between 12 and 15 °.

Claims

REVENDICATIONS
1. Obus anti-aérien (1) de moyen calibre gyrostabilisé destiné à produire une gerbe de sous-projectiles (6), caractérisé en ce qu'il comprend une ogive (2) prolongée par une jupe (3) et un axe central (4) délimitant avec la jupe (3) un logement (5) renfermant les sous-projectiles (6), une enveloppe (7) coiffant la jupe (3) fixée à l'aide d'un filetage amont (8) à son extrémité avant sur un épaulement (19) de l'ogive (2) et fixée à l'aide d'un filetage aval (11) à son extrémité arrière sur un culot (10) renfermant une charge de dépotage (14), des moyens de translation (15) étant intercalés entre le culot (10) et la jupe (3) afin d'assurer le cisaillement des filetages amont (8) et aval (11). 1. Anti-aircraft shell (1) of medium caliber gyrostabilized intended to produce a shower of sub-projectiles (6), characterized in that it comprises a warhead (2) extended by a skirt (3) and a central axis ( 4) delimiting with the skirt (3) a housing (5) containing the sub-projectiles (6), a casing (7) covering the skirt (3) fixed using an upstream thread (8) at its end front on a shoulder (19) of the ogive (2) and fixed by means of a downstream thread (11) at its rear end on a base (10) containing a stripping load (14), means of translation (15) being interposed between the base (10) and the skirt (3) in order to ensure the shearing of the upstream (8) and downstream (11) threads.
2. Obus anti-aérien (1) de moyen calibre gyrostabilisé selon la revendication 1, caractérisé en ce que les moyens de translation (15) sont disposés dans l'enveloppe (7) et sont actionnés par l'initiation de la charge de dépotage (14). 2. Anti-aircraft shell (1) of medium caliber gyrostabilized according to claim 1, characterized in that the translation means (15) are arranged in the casing (7) and are actuated by the initiation of the unloading charge (14).
3. Obus anti-aérien (1) de moyen calibre gyrostabilisé selon la revendication 1 ou 2, caractérisé en ce qu'il comprend une chemise (18) disposée dans le logement (5) et ajustée au diamètre interne de la jupe (3), les sous-projectiles étant disposés dans ladite chemise (18). 3. Anti-aircraft shell (1) of medium caliber gyrostabilized according to claim 1 or 2, characterized in that it comprises a jacket (18) disposed in the housing (5) and adjusted to the internal diameter of the skirt (3) , the sub-projectiles being arranged in said jacket (18).
4. Obus anti-aérien (1) de moyen calibre gyrostabilisé selon la revendication 3, caractérisé en ce que la chemise (18) est disposée en amont en butée contre un épaulement (19) de l'ogive (2) et en aval contre les moyens de translation (15). 4. Anti-aircraft shell (1) of medium caliber gyrostabilized according to claim 3, characterized in that the jacket (18) is disposed upstream in abutment against a shoulder (19) of the warhead (2) and downstream against the translation means (15).
5. Obus anti-aérien (1) de moyen calibre gyrostabilisé selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens de translation (15) sont constitués d'une part par un doigt (16) en prise sur l'extrémité libre de l'axe central (4) de l'ogive (2) et d'autre part par un disque (17) en appui contre l'extrémité libre de la jupe (3). 5. Anti-aircraft shell (1) of medium caliber gyrostabilized according to any one of the preceding claims, characterized in that the translation means (15) consist on the one hand by a finger (16) engaged on the free end of the central axis (4) of the ogive (2) and on the other hand by a disc (17) bearing against the free end of the skirt (3).
6. Obus anti-aérien (1) de moyen calibre gyrostabilisé selon la revendication 4, caractérisé en ce que la translation du doigt (16) entraine le cisaillement du filetage amont (8). 6. Anti-aircraft shell (1) of medium caliber gyrostabilized according to claim 4, characterized in that the translation of the finger (16) causes the shearing of the upstream thread (8).
7. Obus anti-aérien (1) de moyen calibre gyrostabilisé selon la revendication 4 ou 5, caractérisé en ce que la translation du disque (17) entraine le cisaillement du filetage aval (11). 7. Anti-aircraft shell (1) of medium caliber gyrostabilized according to claim 4 or 5, characterized in that the translation of the disc (17) causes the shearing of the downstream thread (11).
8. Obus anti-aérien (1) de moyen calibre gyrostabilisé selon la revendication 3, caractérisé en ce qu'il comporte au moins une bague (20) disposée en appui à la fois contre l'extrémité arrière de la chemise (18) et contre les sous- projectiles (6). 8. Anti-aircraft shell (1) of medium caliber gyrostabilized according to claim 3, characterized in that it comprises at least one ring (20) disposed to bear both against the rear end of the liner (18) and against sub-projectiles (6).
9. Obus anti-aérien (1) de moyen calibre gyrostabilisé selon la revendication 3 ou 4, caractérisé en ce que la chemise (18) est constituée par un ensemble de pétales de maintien des sous-projectiles (6). 9. Anti-aircraft shell (1) of medium caliber gyrostabilized according to claim 3 or 4, characterized in that the jacket (18) is constituted by a set of petals for retaining the sub-projectiles (6).
10. Obus anti-aérien (1) de moyen calibre gyrostabilisé selon l'une quelconque des revendications précédentes, caractérisé en ce que les sous-projectiles (6) sont constitués par des cylindres en matériau lourd. 10. Anti-aircraft shell (1) of medium caliber gyrostabilized according to any one of the preceding claims, characterized in that the sub-projectiles (6) consist of cylinders of heavy material.
EP20785750.9A 2019-09-06 2020-10-05 Anti-aircraft shell for telescoped ammunition with double unlocking Pending EP4025865A1 (en)

Applications Claiming Priority (2)

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FR1909820A FR3100610B1 (en) 2019-09-06 2019-09-06 Anti-aircraft shell for telescoped ammunition with double unlocking
PCT/EP2020/077869 WO2021044065A1 (en) 2019-09-06 2020-10-05 Anti-aircraft shell for telescoped ammunition with double unlocking

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KR (1) KR20230066261A (en)
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FR3098292B1 (en) * 2019-07-04 2021-07-23 Cta Int Telescoped ammunition including a shell

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US11835325B2 (en) 2023-12-05
WO2021044065A1 (en) 2021-03-11
FR3100610A1 (en) 2021-03-12
US20220373312A1 (en) 2022-11-24
FR3100610B1 (en) 2023-11-03
KR20230066261A (en) 2023-05-15

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