EP3943870A1 - Device for extracting a high-calibre projectile jammed in a weapon barrel - Google Patents
Device for extracting a high-calibre projectile jammed in a weapon barrel Download PDFInfo
- Publication number
- EP3943870A1 EP3943870A1 EP21177823.8A EP21177823A EP3943870A1 EP 3943870 A1 EP3943870 A1 EP 3943870A1 EP 21177823 A EP21177823 A EP 21177823A EP 3943870 A1 EP3943870 A1 EP 3943870A1
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- European Patent Office
- Prior art keywords
- tube
- projectile
- blocking means
- blocking
- locking
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- 239000004429 Calibre Substances 0.000 title 1
- 230000000903 blocking effect Effects 0.000 claims abstract description 63
- 238000000605 extraction Methods 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 208000031968 Cadaver Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000023077 detection of light stimulus Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A15/00—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun
- F41A15/22—Tools for extracting cartridges
Definitions
- the technical field of the invention is that of devices and methods for extracting a large caliber projectile stuck in a weapon barrel.
- the patent FR2975178 teaches the use of an extraction device comprising an unblocking mass of a diameter smaller than the caliber of the tube, mass which is intended to be introduced into the tube at the level of the mouth of the latter, then to be released into the tube to impact the blocked projectile by inertia.
- the mass is secured to one end of a rope and, in order to be able to lock or unlock the rope, the second end of the latter can be secured with a locking and unlocking means.
- the blocking and unblocking means is secured to a vehicle carrying the weapon. Once the mass has been inserted into the tube, which must first be placed horizontally, the tube must be raised to the highest possible position before proceeding with the remote release of the mass using the blocking/unblocking means of the rope.
- the invention proposes to simplify these unlocking devices and methods while solving this security problem.
- the subject of the invention is a device for extracting a large caliber projectile stuck in a tube of a weapon, device comprising a solid body with a diameter less than the caliber of the tube and intended to be introduced into the tube at the level of the mouth of the latter then to be released in the tube in order to impact the blocked projectile by inertia, device characterized in that it comprises at least two radially expandable blocking means, each capable of moving between a blocked position in which it is applied radially against the internal wall of the tube and an unlocked position in which it is not applied against the tube, the passage of the locking means from one position to the other being ensured by means of expansion, device comprising translation means making it possible to axially translate a first blocking means with respect to a second blocking means.
- each blocking means may comprise a toroidal chamber made of elastic plastic material, the expansion means comprising a pneumatic compressor coupled to the chambers via pneumatic distributors controllable so as to inflate one and/or or the other of the chambers so that it (s) gets stuck radially in the tube in the locked position, the deflation of one and/or the other chamber giving it the unlocked position.
- each blocking means may comprise at least one pair of jaws intended to cooperate with the internal surface of the tube, which jaws can be applied against the inside of the tube by the expansion means.
- the expansion means may comprise at least one elliptical roller driven in rotation by an electric motor, the roller pushing radially and simultaneously the two jaws of each pair, elastic means connecting the jaws of each pair against the action of the roller so as to bring the jaws back into the unlocked position.
- the device may include means for detecting the arrival of the device at the muzzle of the weapon and which automatically interrupts the progress of the device.
- the detection means may comprise an optical sensor.
- an extraction device 1 is introduced at the level of the mouth 101 of a weapon tube 100 (here an artillery piece), previously oriented at zero elevation, in which a projectile 200 is stuck at the level of the forcing cone.
- a weapon tube 100 here an artillery piece
- the device 1 comprises a solid body 2, the total mass of which is between 20 and 100 kilograms, and which comprises a knocker mass 3 (for example made of steel) at the level of its face facing the projectile 200 to be unjammed.
- the body 2 is of a smaller diameter than that of the tube 100 in order to be able to slide in the tube 100. In order to be able to slide better, the body may be equipped with pads 2a limiting the friction between the body 2 and the tube 100.
- the device 1 comprises at least two radially expandable locking means 4 and 5, each capable of moving between a locked position in which it is applied radially against the internal wall of the tube 100 and an unlocked position in which it is not applied against the tube 100.
- the passage of the blocking means 4 and 5 from one of the positions to the other of the positions is ensured by an expansion means 6.
- each blocking means 4 and 5 may be provided at least two diametrically opposed jaws or sectors which are moved radially so as to be applied or not against the wall of the tube.
- each blocking means 4 and 5 here comprises a toroidal chamber 4a and 5a made of elastic plastic material or elastomer.
- the expansion means 6 then comprises a pneumatic compressor 6 which is coupled to each of the chambers 4a or 5a via controllable pneumatic distributors 33 ( figure 7 ) so as to inflate one or the other of the chambers so that it expands and becomes wedged radially against the wall of the tube 100 to adopt a blocked position.
- the distributors 33 can then be controlled so as to deflate the chamber or chambers considered so that it no longer adheres to the tube 100.
- the deflated chamber then occupies an unlocked position. Chambers 4a and 5a will be better seen in the following figures.
- the body 2 of the device therefore contains a pneumatic compressor 6 which is connected to each blocking means 4 and 5 by pipes carrying pneumatic distributors 33 that can be controlled. It also contains a means of translation 8 which will comprise for example a pneumatic linear cylinder 8 whose direction of movement of the rod is controlled by one of the distributors 33 (one could alternatively provide a screw jack).
- the translation means 8 makes it possible to bring the blocking means 4 and 5 axially closer together or further apart.
- An electronic control box 31 makes it possible to control the sequencing of the inflation or deflation operations of the toric chambers 4a and 5a of each blocking means 4 or 5 and the movement of the translation means 8.
- This control box 31 (or the body 2 ) may include a computer 32 or a programmable automaton incorporating the control sequence(s) which will be described later.
- the first blocking means 4 and the second blocking means 5 are both in the blocked position to ensure perfect immobility of the device 1 relative to the tube 100.
- the device 1 has been introduced beforehand into the tube 100, positioned at the horizontal.
- the locking means 4 and 5 are of course in the unlocked position. It is only once the device has been put in place that the blocking means are put into the blocked position by the expansion means 6, before modifying the elevation angle of the tube.
- the energy supply to device 1 can be done either from an external source by means of a power cord, not shown, or else from batteries embedded in device 1 (batteries not shown).
- the tube 100 has been oriented at its maximum site, placing the device 1 in an almost vertical position.
- the locking means 4 and 5 have been placed in the unlocked position, causing the device 1 to fall by gravity into the tube 100.
- the device 1 struck the projectile 200 in the vicinity of its warhead while avoiding hitting the fuze 203 thanks to a clearance 3a provided at the level of the knocker 3.
- the kinetic energy released by the impact of the device 1 on the projectile 200 must unjam the latter from the tube 100. If the projectile 200 is not released, it is necessary to raise the device 1 as high as possible in the tube 100 to reiterate the fall of the device 1 and cause a new shock on the projectile 200 for the unlock.
- the second blocking means 5 is first positioned in the blocked position (here by inflation of the chamber 5a). Then the first blocking means 4, which is in the unlocked position, is translated by a stroke X along an axis parallel to the tube 100 in the direction of the mouth of the tube 100 thanks to the translation means 8 which may include the pneumatic linear cylinder or opinion. This first translational movement tends to move the first blocking means 4 away from the second blocking means 5 and also from the body 2 of the device (which is fixed axially with respect to the second blocking means).
- the latter is placed in the blocked position as shown in figure 5 , here by inflation of the chamber 4a.
- the second locking means 5 is placed in the unlocked position.
- the translation means 8 is then actuated in the opposite direction so as to bring the blocking means 4 and 5 closer to each other. This movement has the effect of raising the body 2 of the device 1 in the tube 100 and more generally of raising the entire device 1 by a distance X towards the top of the tube 100.
- the second locking means 5 is placed in the locked position, ensuring the immobilization of the device 1 with respect to the tube 100, and placing the device in a configuration identical to that of the figure 2 . It is then possible to repeat the operation of moving then blocking the first blocking means 4 with respect to the second blocking means 5 as previously described.
- a step-by-step movement X is obtained at each step which allows the device 1 to reach the top of the tube 100 without an operator having to approach the part. of artillery.
- the upward movement of device 1 is interrupted when device 1 has reached the muzzle of the weapon. This interruption can either be controlled by a remote operator, or intervene automatically.
- the detection of the reaching of the mouth 101 of the tube 100 could be done for example by means of a sensor evaluating the distance traveled by the device 1 in the tube (by counting for example the number of running cycles X).
- a new release can be carried out by the command of an operator, or else the device can be removed if it is decided not to drop it on the projectile again.
- the removal of the device can also be done through the breech once the projectile has been unlocked.
- each locking means 4 and 5 no longer comprises toroidal chambers 4a and 5a but at least one pair of jaws 4b (or 5b), diametrically opposed and which each have an external sector profile which corresponds with the internal surface of the tube 100
- Each blocking means 4 and 5 comprises at least one elliptical roller 20 which, when it pivots, pushes the two jaws 4b (or 5b) associated with it radially and simultaneously against the inside of the tube 100 so as to block the blocking means 4 or 5 in the tube 100 as seen in figure 8a .
- Elastic means 19 (here a pair of springs connecting the ends of the jaws) connect the jaws of each pair and act against the action of the thrust of the roller(s) 20. They allow the pairs of jaws 4b or 5b.
- the material of the jaws 4b and 5b will be chosen so that it offers the highest possible coefficient of friction with respect to the nature of the material inside the tube 100.
- the pivoting of each elliptical roller 20 is ensured by an electric motor 21.
- the invention therefore allows safe withdrawal of a projectile stuck in a tube since all the unjamming operations and the repetition of these operations can be controlled remotely from the weapon (here the artillery piece).
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Toys (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Stroboscope Apparatuses (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
L'invention a pour objet un dispositif d'extraction (1) d'un projectile (200) de gros calibre coincé dans un tube (100) d'une arme, dispositif comportant un corps massif (2) d'un diamètre inférieur au calibre du tube (100) et destiné à être introduit dans le tube (100) au niveau de la bouche (101) de ce dernier puis à être libéré dans le tube (100) pour venir impacter par inertie le projectile (200) bloqué. ce dispositif est caractérisé en ce qu'il comporte au moins deux moyens de blocage (4,5) expansibles radialement, chacun apte à évoluer entre une position bloquée dans laquelle il est appliqué radialement contre la paroi interne du tube et une position débloquée dans laquelle il n'est pas appliqué contre le tube (100), le passage des moyens de blocage (4,5) de l'une à l'autre des positions étant assuré par un moyen d'expansion (6), dispositif comportant un moyen de translation (8) permettant de translater axialement un premier moyen de blocage (4) par rapport à un second moyen de blocage (5).L'invention a également pour objet un procédé d'extraction de projectile mettant en œuvre un tel dispositif.The subject of the invention is a device (1) for extracting a large caliber projectile (200) stuck in a tube (100) of a weapon, device comprising a solid body (2) with a diameter less than caliber of the tube (100) and intended to be introduced into the tube (100) at the level of the mouth (101) of the latter then to be released into the tube (100) to impact the blocked projectile (200) by inertia. this device is characterized in that it comprises at least two radially expandable locking means (4, 5), each capable of moving between a locked position in which it is applied radially against the internal wall of the tube and an unlocked position in which it is not applied against the tube (100), the passage of the blocking means (4,5) from one position to the other being ensured by an expansion means (6), device comprising a means translation (8) for axially translating a first locking means (4) relative to a second locking means (5). The invention also relates to a projectile extraction method implementing such a device.
Description
Le domaine technique de l'invention est celui des dispositifs et procédés d'extraction d'un projectile de gros calibre coincé dans un tube d'arme.The technical field of the invention is that of devices and methods for extracting a large caliber projectile stuck in a weapon barrel.
Lors de la mise à poste d'un projectile de gros calibre dans un tube d'artillerie, le projectile est maintenu en place par son coincement dans le cône de forcement du tube.When positioning a large caliber projectile in an artillery tube, the projectile is held in place by its wedging in the forcing cone of the tube.
Il peut arriver qu'un dysfonctionnement de la pièce d'artillerie ou une annulation de l'ordre de tir engendre la nécessité de retirer le projectile du tube pour une mise en sécurité de l'arme.It may happen that a malfunction of the artillery piece or a cancellation of the firing order generates the need to remove the projectile from the barrel in order to secure the weapon.
Pour permettre le déblocage et le retrait du projectile, le brevet
La masse est solidaire d'une extrémité d'une corde et, afin de pouvoir bloquer ou débloquer la corde, la seconde extrémité de cette dernière est solidarisable avec un moyen de blocage et déblocage.The mass is secured to one end of a rope and, in order to be able to lock or unlock the rope, the second end of the latter can be secured with a locking and unlocking means.
Le moyen de blocage et déblocage est solidaire d'un véhicule porteur de l'arme. Une fois la masse insérée dans le tube, qui doit préalablement être placé à l'horizontale, il faut remonter le tube à un site le plus élevé possible avant de procéder au largage à distance de la masse grâce au moyen de blocage/déblocage de la corde.The blocking and unblocking means is secured to a vehicle carrying the weapon. Once the mass has been inserted into the tube, which must first be placed horizontally, the tube must be raised to the highest possible position before proceeding with the remote release of the mass using the blocking/unblocking means of the rope.
Durant toute l'opération d'élévation du tube, la corde doit être maintenue tendue manuellement ce qui pose des problèmes du point de vue de la sécurité.Throughout the entire operation of raising the tube, the rope must be kept taut manually, which poses problems from the point of view of safety.
En outre la fixation du moyen de blocage/déblocage de l'arme sur une pièce d'artillerie sans provoquer d'entrave de la corde avec d'autres équipements de la pièce n'est pas toujours possible.In addition, fixing the means for blocking/unblocking the weapon on an artillery piece without causing the rope to be obstructed with other equipment in the piece is not always possible.
Enfin, si le projectile n'a pas été débloqué lors du premier largage, il faut réitérer toute l'opération de hissage de la masse ce qui implique la présence d'un opérateur au pied de la pièce non sécurisée.Finally, if the projectile has not been released during the first release, the entire operation of hoisting the mass must be repeated, which implies the presence of an operator at the foot of the unsecured part.
L'invention propose de simplifier ces dispositifs et procédés de déblocage tout en résolvant ce problème de sécurité.The invention proposes to simplify these unlocking devices and methods while solving this security problem.
Ainsi l'invention a pour objet un dispositif d'extraction d'un projectile de gros calibre coincé dans un tube d'une arme, dispositif comportant un corps massif d'un diamètre inférieur au calibre du tube et destiné à être introduit dans le tube au niveau de la bouche de ce dernier puis à être libéré dans le tube pour venir impacter par inertie le projectile bloqué, dispositif caractérisé en ce qu'il comporte au moins deux moyens de blocage expansibles radialement, chacun apte à évoluer entre une position bloquée dans laquelle il est appliqué radialement contre la paroi interne du tube et une position débloquée dans laquelle il n'est pas appliqué contre le tube, le passage des moyens de blocage de l'une à l'autre des positions étant assuré par un moyen d'expansion, dispositif comportant un moyen de translation permettant de translater axialement un premier moyen de blocage par rapport à un second moyen de blocage.Thus the subject of the invention is a device for extracting a large caliber projectile stuck in a tube of a weapon, device comprising a solid body with a diameter less than the caliber of the tube and intended to be introduced into the tube at the level of the mouth of the latter then to be released in the tube in order to impact the blocked projectile by inertia, device characterized in that it comprises at least two radially expandable blocking means, each capable of moving between a blocked position in which it is applied radially against the internal wall of the tube and an unlocked position in which it is not applied against the tube, the passage of the locking means from one position to the other being ensured by means of expansion, device comprising translation means making it possible to axially translate a first blocking means with respect to a second blocking means.
Selon un premier mode de réalisation, chaque moyen de blocage pourra comporter une chambre torique en matière plastique élastique, le moyen d'expansion comportant un compresseur pneumatique couplé aux chambres par l'intermédiaire de distributeurs pneumatiques commandables de manière à gonfler l'une et/ou l'autre des chambres pour qu'elle (s) se coince (nt) radialement dans le tube dans la position bloquée, le dégonflage de l'une et/ou de l'autre chambre lui donnant la position débloquée.According to a first embodiment, each blocking means may comprise a toroidal chamber made of elastic plastic material, the expansion means comprising a pneumatic compressor coupled to the chambers via pneumatic distributors controllable so as to inflate one and/or or the other of the chambers so that it (s) gets stuck radially in the tube in the locked position, the deflation of one and/or the other chamber giving it the unlocked position.
Selon un second mode de réalisation, chaque moyen de blocage pourra comporter au moins une paire de mâchoires destinées à coopérer avec la surface interne du tube, mâchoires pouvant être appliquées contre l'intérieur du tube par le moyen d'expansion.According to a second embodiment, each blocking means may comprise at least one pair of jaws intended to cooperate with the internal surface of the tube, which jaws can be applied against the inside of the tube by the expansion means.
Selon une variante de réalisation, le moyen d'expansion pourra comporter au moins un galet elliptique entraîné en rotation par un moteur électrique, le galet poussant radialement et simultanément les deux mâchoires de chaque paire, des moyens élastiques reliant les mâchoires de chaque paire contre l'action du galet de façon à rappeler les mâchoires en position débloquée.According to a variant embodiment, the expansion means may comprise at least one elliptical roller driven in rotation by an electric motor, the roller pushing radially and simultaneously the two jaws of each pair, elastic means connecting the jaws of each pair against the action of the roller so as to bring the jaws back into the unlocked position.
Selon une variante, le dispositif pourra comporter un moyen de détection de l'arrivée du dispositif à la bouche de l'arme et qui interrompt automatiquement la progression du dispositif.According to a variant, the device may include means for detecting the arrival of the device at the muzzle of the weapon and which automatically interrupts the progress of the device.
Le moyen de détection pourra comporter un capteur optique.The detection means may comprise an optical sensor.
L'invention a également pour objet un procédé d'extraction d'un projectile de gros calibre coincé dans un tube d'une arme, procédé caractérisé en ce qu'on utilise un dispositif d'extraction selon une des caractéristiques précédentes et en mettant en œuvre les étapes suivantes :
- insérer le dispositif d'extraction dans la bouche du tube ;
- commander la mise en position bloquée d'au moins un moyen de blocage ;
- orienter le tube au site maximum ;
- commander la mise en position débloquée de tous les moyens de blocage de façon à libérer le dispositif qui tombe par gravité sur le projectile.
- insert the extraction device into the mouth of the tube;
- controlling the locking position of at least one locking means;
- orient the tube at the maximum site;
- control the unlocked position of all the locking means so as to release the device which falls by gravity on the projectile.
Selon un mode particulier de mise en œuvre, le procédé pourra comporter les étapes suivantes :
- après impact sur le projectile, commander la translation axiale d'un premier moyen de blocage par rapport à un second moyen de blocage ;
- commander la mise en position bloquée du premier moyen de blocage ;
- commander la translation du second moyen de blocage solidaire du corps du dispositif pour le rapprocher du premier moyen de blocage ;
- commander la mise en position bloquée du second moyen de blocage ;
- réitérer les opérations d'écartement puis blocage et de rapprochement puis blocage des moyens de blocage jusqu'à ce que le dispositif atteigne la bouche du tube ;
- commander la mise en position débloquée de tous les moyens de blocage de façon à libérer le dispositif qui tombe par gravité sur le projectile.
- after impact on the projectile, controlling the axial translation of a first blocking means relative to a second blocking means;
- controlling the placing in the blocked position of the first blocking means;
- control the translation of the second blocking means secured to the body of the device to bring it closer to the first blocking means;
- controlling the placing in the locked position of the second locking means;
- repeat the operations of separating then blocking and of bringing together then blocking the blocking means until the device reaches the mouth of the tube;
- control the unlocked position of all the locking means so as to release the device which falls by gravity on the projectile.
Selon une variante, on pourra réaliser les étapes suivantes après impact sur le projectile :
- rapprocher les deux moyens de blocage préalablement placés en position débloquée ;
- commander la mise en position bloquée du premier moyen de blocage ;
- commander la translation du second moyen de blocage solidaire du corps du dispositif pour l'éloigner du premier moyen de blocage de manière à exercer un appui sur le projectile.
- bring together the two locking means previously placed in the unlocked position;
- controlling the placing in the blocked position of the first blocking means;
- control the translation of the second blocking means secured to the body of the device to move it away from the first blocking means so as to exert pressure on the projectile.
L'invention sera mieux comprise à la lecture de la description suivante, description faite en regard des dessins en annexe, dessins dans lesquels :
- [
Fig. 1 ] représente une vue schématique en coupe longitudinale d'un dispositif selon l'invention dans un tube d'arme lors d'une première phase d'utilisation. - [
Fig. 2 ] représente une vue schématique en coupe longitudinale d'un dispositif selon l'invention dans un tube d'arme lors d'une seconde phase d'utilisation. - [
Fig. 3 ] représente une vue schématique en coupe longitudinale d'un dispositif selon l'invention dans un tube d'arme lors d'une troisième phase d'utilisation. - [
Fig. 4 ] représente une vue schématique en coupe longitudinale d'un dispositif selon l'invention dans un tube d'arme lors d'une quatrième phase d'utilisation. - [
Fig. 5 ] représente une vue schématique en coupe longitudinale d'un dispositif selon l'invention dans un tube d'arme lors d'une cinquième phase d'utilisation. - [
Fig. 6 ] représente une vue schématique en coupe longitudinale d'un dispositif selon l'invention dans un tube d'arme lors d'une sixième phase d'utilisation. - [
Fig. 7 ] représente une vue schématique en coupe longitudinale d'un dispositif selon l'invention. - [
Fig. 8a ] représente une vue schématique en coupe transversale d'un dispositif dans un tube d'arme selon un second mode de réalisation de l'invention, dispositif à l'état bloqué. - [
Fig. 8b ] représente une vue schématique en coupe transversale d'un dispositif dans un tube d'arme selon un second mode de réalisation de l'invention, dispositif à l'état débloqué. - [
Fig. 9a ] représente une vue schématique en coupe longitudinale d'un dispositif selon l'invention dans un tube d'arme lors d'une première étape d'une variante d'utilisation. - [
Fig. 9b ] représente une vue schématique en coupe longitudinale d'un dispositif selon l'invention dans un tube d'arme lors d'une seconde étape d'une variante d'utilisation.
- [
Fig. 1 ] shows a schematic view in longitudinal section of a device according to the invention in a weapon barrel during a first phase of use. - [
Fig. 2 ] shows a schematic view in longitudinal section of a device according to the invention in a weapon barrel during a second phase of use. - [
Fig. 3 ] shows a schematic view in longitudinal section of a device according to the invention in a weapon barrel during a third phase of use. - [
Fig. 4 ] shows a schematic view in longitudinal section of a device according to the invention in a weapon barrel during a fourth phase of use. - [
Fig. 5 ] shows a schematic view in longitudinal section of a device according to the invention in a weapon barrel during a fifth phase of use. - [
Fig. 6 ] shows a schematic view in longitudinal section of a device according to the invention in a weapon barrel during a sixth phase of use. - [
Fig. 7 ] shows a schematic view in longitudinal section of a device according to the invention. - [
Fig. 8a ] shows a schematic cross-sectional view of a device in a weapon barrel according to a second embodiment of the invention, device in the blocked state. - [
Fig. 8b ] shows a schematic cross-sectional view of a device in a weapon barrel according to a second embodiment of the invention, device in the unlocked state. - [
Fig. 9a ] shows a schematic view in longitudinal section of a device according to the invention in a weapon barrel during a first stage of a variant of use. - [
Fig. 9b ] shows a schematic view in longitudinal section of a device according to the invention in a weapon barrel during a second stage of a variant of use.
Selon la
Le dispositif 1 comporte un corps massif 2, dont la masse totale est comprise entre 20 et 100 kilogrammes, et qui comporte une masse heurtoir 3 (par exemple en acier) au niveau de sa face orientée vers le projectile 200 à décoincer. Le corps 2 est d'un diamètre inférieur à celui du tube 100 afin de pouvoir glisser dans le tube 100. Afin de pouvoir mieux glisser, le corps pourra être équipé de patins 2a limitant la friction entre le corps 2 et le tube 100.The
Le dispositif 1 comporte au moins deux moyens de blocage 4 et 5 expansibles radialement, chacun apte à évoluer entre une position bloquée dans laquelle il est appliqué radialement contre la paroi interne du tube 100 et une position débloquée dans laquelle il n'est pas appliqué contre le tube 100. Le passage des moyens de blocage 4 et 5 de l'une des positions à l'autre des positions est assuré par un moyen d'expansion 6.The
Différents modes de réalisation de moyens de blocage expansibles radialement sont possibles. On pourra par exemple, pour chaque moyen de blocage 4 et 5, prévoir au moins deux mâchoires ou secteurs diamétralement opposés et qui sont déplacés radialement pour venir s'appliquer ou non contre la paroi du tube.Different embodiments of radially expandable blocking means are possible. It is possible, for example, for each blocking means 4 and 5, to provide at least two diametrically opposed jaws or sectors which are moved radially so as to be applied or not against the wall of the tube.
Selon un mode particulier de réalisation schématisé aux
Selon la
Ainsi, Ã la
L'alimentation en énergie du dispositif 1 pourra se faire soit depuis une source externe grâce à un cordon d'alimentation non représenté ou bien depuis des batteries embarquées dans le dispositif 1 (batteries non représentées).The energy supply to
Selon la
A la
Conformément à l'invention et comme représenté à la
Au terme de la course X du premier moyen de blocage 4, celui-ci est mis en position bloquée comme représenté à la
Ensuite, comme représenté à la
Au terme de la course X du corps de dispositif 2 vers le premier moyen de blocage 4, le second moyen de blocage 5 est mis en position bloquée, assurant l'immobilisation du dispositif 1 par rapport au tube 100, et plaçant le dispositif dans une configuration identique à celle de la
En réitérant ces opérations de déplacement et blocage, on obtient un mouvement pas à pas de course X à chaque pas qui permet au dispositif 1 d'atteindre le haut du tube 100 sans qu'un opérateur n'ait à s'approcher de la pièce d'artillerie.By repeating these displacement and blocking operations, a step-by-step movement X is obtained at each step which allows the
Le mouvement de remontée du dispositif 1 est interrompu lorsque le dispositif 1 est arrivé à la bouche de l'arme. Cette interruption pourra soit être commandée par un opérateur à distance, soit intervenir automatiquement.The upward movement of
La détection de l'atteinte de la bouche 101 du tube 100 pourra se faire par exemple au moyen d'un capteur évaluant la distance parcourue par le dispositif 1 dans le tube (en comptant par exemple le nombre de cycles de course X).The detection of the reaching of the
On pourra également prévoir un détecteur solidaire d'une face supérieure du moyen de blocage 4 et permettant une détection optique de la lumière dans son champ d'observation radial (indication que le détecteur est sorti du tube).It is also possible to provide a detector integral with an upper face of the blocking means 4 and allowing a optical detection of light in its radial field of view (indication that the detector has come out of the tube).
Une fois le dispositif revenu au niveau de la bouche 101 du tube de l'arme, on pourra réaliser un nouveau largage par la commande d'un opérateur, ou bien on pourra retirer le dispositif si l'on renonce à le faire tomber sur le projectile une nouvelle fois. Le retrait du dispositif pourra se faire également par la culasse une fois le projectile débloqué.Once the device has returned to the level of the
Selon un autre mode de réalisation représenté aux
Des moyens élastiques 19 (ici une paire de ressorts reliant les extrémités des mâchoires) relient les mâchoires de chaque paire et agissent contre l'action de la poussée du ou des galets 20. Ils permettent de rappeler en position débloquée les paires de mâchoires 4b ou 5b. Le matériau des mâchoires 4b et 5b sera choisi de manière à ce qu'il offre un coefficient de frottement le plus élevé possible par rapport à la nature au matériau de l'intérieur du tube 100. Le pivotement de chaque galet elliptique 20 est assuré par un moteur électrique 21.Elastic means 19 (here a pair of springs connecting the ends of the jaws) connect the jaws of each pair and act against the action of the thrust of the roller(s) 20. They allow the pairs of
Le fonctionnement de ce mode de réalisation est analogue à celui décrit précédemment en référence aux
Selon une variante du mode opératoire qui est représenté aux
Ensuite, au lieu de faire remonter le dispositif pour réaliser une nouvelle chute, on commande l'écartement des deux moyens de blocage 4 et 5 l'un de l'autre.Then, instead of causing the device to rise again to produce a new drop, the separation of the two blocking means 4 and 5 from one another is controlled.
Ceci entraine une poussée du corps 2 du dispositif 1 sur le projectile 200 ce qui peut suffire dans certains cas à le débloquer.This leads to a thrust of the
En cas d'echec du déblocage par poussée, on pourra commander la remontée du dispositif 1 vers la bouche du tube pour commander un nouveau largage et chute par gravité du dispositif sur le projectile.In the event of failure of the release by pushing, it will be possible to order the raising of the
L'invention permet donc un retrait en toute sécurité d'un projectile coincé dans un tube puisque toutes les opérations de décoincement et la répétition de ces opérations peuvent être commandées à distance de l'arme (ici la pièce d'artillerie).The invention therefore allows safe withdrawal of a projectile stuck in a tube since all the unjamming operations and the repetition of these operations can be controlled remotely from the weapon (here the artillery piece).
Claims (9)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2007567A FR3112848B1 (en) | 2020-07-23 | 2020-07-23 | DEVICE FOR EXTRACTING A LARGE CALIBER PROJECTILE FROM A WEAPON TUBE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3943870A1 true EP3943870A1 (en) | 2022-01-26 |
EP3943870B1 EP3943870B1 (en) | 2023-03-22 |
Family
ID=73793287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21177823.8A Active EP3943870B1 (en) | 2020-07-23 | 2021-06-04 | Device for extracting a high-calibre projectile jammed in a weapon barrel |
Country Status (8)
Country | Link |
---|---|
US (1) | US11536529B2 (en) |
EP (1) | EP3943870B1 (en) |
DK (1) | DK3943870T3 (en) |
ES (1) | ES2947186T3 (en) |
FI (1) | FI3943870T3 (en) |
FR (1) | FR3112848B1 (en) |
IL (1) | IL284616A (en) |
PL (1) | PL3943870T3 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2975178A1 (en) | 2011-05-11 | 2012-11-16 | Nexter Systems | Extraction device for extracting projectile stuck in large caliber tube of artillery piece, has release mass intended to be introduced into caliber tube at mouth of tube so as to release blocked projectile by inertial impact of mass |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3731587A (en) * | 1970-12-08 | 1973-05-08 | Us Army | Projectile extraction apparatus |
US5430966A (en) * | 1994-05-17 | 1995-07-11 | Hippensteel; Thomas O. | Shotgun shell de-jamming device |
US10337814B1 (en) * | 2016-08-15 | 2019-07-02 | The United States Of America As Represented By The Secretary Of The Navy | Dearmer positioning system |
-
2020
- 2020-07-23 FR FR2007567A patent/FR3112848B1/en active Active
-
2021
- 2021-06-04 FI FIEP21177823.8T patent/FI3943870T3/en active
- 2021-06-04 DK DK21177823.8T patent/DK3943870T3/en active
- 2021-06-04 PL PL21177823.8T patent/PL3943870T3/en unknown
- 2021-06-04 EP EP21177823.8A patent/EP3943870B1/en active Active
- 2021-06-04 ES ES21177823T patent/ES2947186T3/en active Active
- 2021-07-05 IL IL284616A patent/IL284616A/en unknown
- 2021-07-09 US US17/371,783 patent/US11536529B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2975178A1 (en) | 2011-05-11 | 2012-11-16 | Nexter Systems | Extraction device for extracting projectile stuck in large caliber tube of artillery piece, has release mass intended to be introduced into caliber tube at mouth of tube so as to release blocked projectile by inertial impact of mass |
Also Published As
Publication number | Publication date |
---|---|
ES2947186T3 (en) | 2023-08-02 |
DK3943870T3 (en) | 2023-06-12 |
FR3112848A1 (en) | 2022-01-28 |
EP3943870B1 (en) | 2023-03-22 |
US20220057157A1 (en) | 2022-02-24 |
FI3943870T3 (en) | 2023-06-06 |
US11536529B2 (en) | 2022-12-27 |
FR3112848B1 (en) | 2022-07-01 |
IL284616A (en) | 2022-02-01 |
PL3943870T3 (en) | 2023-05-29 |
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