EP0048204A1 - Pyrotechnically activated cartridge with useful load with a safety - Google Patents
Pyrotechnically activated cartridge with useful load with a safety Download PDFInfo
- Publication number
- EP0048204A1 EP0048204A1 EP81401413A EP81401413A EP0048204A1 EP 0048204 A1 EP0048204 A1 EP 0048204A1 EP 81401413 A EP81401413 A EP 81401413A EP 81401413 A EP81401413 A EP 81401413A EP 0048204 A1 EP0048204 A1 EP 0048204A1
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- EP
- European Patent Office
- Prior art keywords
- chain
- projectile
- pyrotechnic
- block
- cartridge according
- 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.)
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- 230000001133 acceleration Effects 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 239000000567 combustion gas Substances 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 235000008429 bread Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
- F42C15/28—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids
- F42C15/31—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids generated by the combustion of a pyrotechnic or explosive charge within the fuze
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
- F42C15/18—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved
- F42C15/184—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved using a slidable carrier
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
- F42C15/24—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means
Definitions
- the present invention relates to the security of ammunition.
- a cartridge is very often used comprising a tube, the socket bottom of which houses a pyrotechnic ejection charge. And the projectile placed in front of the ejection charge is in turn provided with a delay pyrotechnic chain; initiated by the ejection charge, this will finally ignite after leaving the tube the charge for implementing the projectile.
- the present invention comes to propose a particularly satisfactory solution, which is based on simple means, and gives complete satisfaction, by envisaging, in addition to the aforementioned chain-breaking drawer, double security produced by entirely separate parts, and operating following radically different principles.
- the aforementioned drawer is immobilized in the chain-breaking position by a stop, axially retained until a force of predetermined intensity, and secured to a counterweight, which eclipses it under the effect of the acceleration due to the start of the coup.
- the pyrotechnic chain further comprises another chain break, ensured by the interposition of a shutter block, the latter also being held axially under a predetermined effort, and capable of being driven out by the pressure of the combustion gases.
- this other chain break is placed between the ejection charge and the start of the delay pyrotechnic chain.
- the block which slides-in a bore, has a shoulder housing an O-ring larger than the bore, and abutting thereon, in the position where the block ensures the chain breaks, while the gas pressure forces the passage of the block with its seal in the bore.
- the stop is advantageously maintained in the position of immobilization of the drawer by a toothed washer or a veil capable of yielding under a predetermined force.
- the pressure of the gases on the shutter block displaces the latter axially, in the opposite direction to the axial movement of the counterweight due to the acceleration at the start of the stroke.
- the cartridge illustrated in FIGS. 1 and 2 comprises a tube 1, integral with a socket bottom 2, which houses a pyrotechnic ejection charge 4, capable of being excited by an electrical primer 3. Passing through the holes d 'a spangle 5, the gases released by the ejection charge 4 will propel a projectile generally designated by the reference 10, this projectile leaving when the cap 6 placed at the other end is released, and retained by crimping formed at the end of the tube 1.
- the projectile 10 comprises in the upper part an envelope defined by a disc 12 and a cylinder 11, this envelope being fixed by a screw 14 on the central shaft 13, which in turn comes in the lower part to receive a screw 15 fixing it on the part 16, perforated in particular in 17. Between the end walls 12 and 17 can be formed any charge, for example an illuminating bar, which will be ignited by gases released by an implementation charge 72, and passing through the orifices 17
- the plate 16 is in turn fixed to the base of the projectile, which is designated by the general reference 20, and can be made up of one or more integral parts.
- this base comprises in the middle part a sliding drawer, designated by 50.
- This drawer is provided with bores in which are drawn outwards from the pins 53 and 54, coming bear on the external wall of the part 20.
- the drawer 50 has a rod 56, projecting outwards, until passing through an orifice 57 formed in the part 20, to finally come to press on the tube 1.
- the drawer 50 will move to the left of FIG. 4 to come into abutment on the wall 20.
- the orifice 52 comes in the alignment position, and thus allows a transmission of fire between the relay load 51 of FIG. 5 and the processing load 72 already mentioned, through a thin web 71.
- the gases released by the ejection charge will then not only to be able to eject the projectile, but also to ignite a pyrotechnic charge 40 forming a delay relay.
- This load 40 is placed in a radial bore, terminating on the side of the bore 35 housing the obturator block 31. And this radial bore comes to an axial orifice, allowing access to another load forming a transmission relay of fire 51.
- the radial bore which houses the part 40 extends to the opposite end of the block 20, by another bore 41.
- the main purpose of this is to allow the composition to be put in place. delay 41, as well as its settlement.
- the bore 41 is closed by a piston 42 secured to a head 43 with the interposition of a seal.
- the relay load 5i is located immediately below the sliding drawer 50, and it can therefore ensure the continued transmission of fire, provided that the drawer 50 has meanwhile been able to move, the projectile having left the tube, in order to bring the orifice 52 in the axial position. It will be noted that in reality the ignition of the relay composition 51 can be done at the desired time, since it is placed after the delay charge 40.
- a stop 61 is placed projecting into the housing of the drawer 50 in order to immobilize the latter in the broken chain position.
- the counterweight 61 is retained in position blocking the drawer by a washer 62, which is a toothed washer as can be seen better in FIG. 5A.
- This toothed washer will open when the force applied to it by the stop 61 reaches a predetermined threshold, and therefore when the acceleration communicated to all the parts 61 and 63 reaches a predetermined value.
- the ejection charge 4 begins to burn, and produces a strong gas evolution in the chamber 25.
- the obturator block 31 of FIG. 3 will be moved towards the top, in order to allow the ignition of the delay charge 40, which will burn for a preset time, for example equal to 5/100 seconds.
- the projectile 10 begins to move. Its acceleration very quickly reaches a very large value, sufficient to move the stop against the toothed washer 62, and consequently free the drawer. As soon as it leaves the mouth, the slide will therefore be able to move to the axial position, and authorize the communication of fire between the relay load 51 and the implementation load 72.
- the pyrotechnic delay 40 will arrive at the end of combustion and ignite the relay load 51, which will now communicate the fire to the implementation load 72. In turn, this will not only ensure the load deposition useful of the cartridge, but also the ignition of the lighting bread or the similar charge that it can contain.
- the load according to the invention has very high security. This security also intervenes at the level of violent shocks undergone by the cartridge, because the displacement of the shutter block 31 occurs axially, but in the opposite direction to the axial movement required for the counterweight 63 in order to ensure the transmission of fire. As a result, a violent vertical shock can only move one of the two elements, but not both. On the other hand, these members are placed in the vicinity of axial planes of the cartridge which are perpendicular to each other.
- the O-ring 33 of FIG. 3 is a silicone seal for low temperature, which has the advantage of ensuring good blocking of the shutter block when the latter does not move. This results in almost irreversibility of the movement of the shutter block 31, except of course under the effect of strong accelerations which can occur during the start of the stroke.
- the cartridge according to the present invention advantageously applies as an infrared decoy for aircraft, because it allows excellent safety, even if the delay 40 is very short, so as to ensure deployment of the infrared decoy very soon after the projectile has left the aircraft, condition that a person skilled in the art will recognize as very useful.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Emergency Lowering Means (AREA)
- Air Bags (AREA)
- Burglar Alarm Systems (AREA)
- Secondary Cells (AREA)
- Display Devices Of Pinball Game Machines (AREA)
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- Vibration Dampers (AREA)
- Dental Preparations (AREA)
Abstract
Description
La présente invention concerne la sécurité des munitions.The present invention relates to the security of ammunition.
Pour lancer différentes charges utiles, par exemple des charges éclairantes, on utilise très souvent une cartouche comprenant un tube dont le fond de douille loge une charge pyrotechnique d'éjection. Et le projectile placé devant la charge d'éjection est muni à son tour d'une chaîne pyrotechnique à retard ; initiée par la charge d'éjection, celle-ci va finalement allumer après sortie du tube la charge de mise en oeuvre du projectile.To launch different payloads, for example lighting loads, a cartridge is very often used comprising a tube, the socket bottom of which houses a pyrotechnic ejection charge. And the projectile placed in front of the ejection charge is in turn provided with a delay pyrotechnic chain; initiated by the ejection charge, this will finally ignite after leaving the tube the charge for implementing the projectile.
Dans le brevet français N° 74 41 205, la demanderesse a déjà décrit l'interposition d'un tiroir à coulissement transversal, lequel ne vient en position de transmission de feu qu'après la sortie de tube du projectile. De la sorte, la mise en oeuvre de la charge utile ne peut intervenir avant que le projectile ne soit sorti du tube de la cartouche. Ce moyen, qui a reçu une large utilisation, permet d'ores et déjà une sécurité non négligeable. Cela étant, la tendance actuelle est à augmenter considérablement la sécurité. Il en résulte cor- rélativement une complication des dispositifs utilisés.In French patent No. 74 41 205, the applicant has already described the interposition of a transversely sliding drawer, which does not come into the fire transmission position until after the tube has left the projectile. In this way, the implementation of the payload cannot take place before the projectile has left the cartridge tube. This means, which has been widely used, already provides significant security. However, the current trend is to significantly increase safety. This results in a complication of the devices used.
La présente invention vient au contraire proposer une solution particulièrement satisfaisante, qui se trouve fondée sur des moyens simples, et donne entière satisfaction, en envisaaeant en plus du tiroir de rupture de chaîne précité, une double sécurité réalisée par des pièces entièrement séparées, et fonctionnant suivant des principes radicalement différents.The present invention, on the contrary, comes to propose a particularly satisfactory solution, which is based on simple means, and gives complete satisfaction, by envisaging, in addition to the aforementioned chain-breaking drawer, double security produced by entirely separate parts, and operating following radically different principles.
Selon la première sécurité proposée, le tiroir précité est immobilisé en position de rupture de chaîne par une butée, retenue axialement jusqu'à un effort d'intensité prédéterminée, et solidaire d'une masselotte, qui l'éclipse sous l'effet de l'accélération due au départ du coup.According to the first safety proposed, the aforementioned drawer is immobilized in the chain-breaking position by a stop, axially retained until a force of predetermined intensity, and secured to a counterweight, which eclipses it under the effect of the acceleration due to the start of the coup.
Pour réaliser la seconde sécurité, qu'il est très avantageux d'utiliser selon l'invention, la chaîne pyrotechnique comporte en outre une autre rupture de chaîne, assurée par interposition d'un bloc obturateur, celui-ci étant également tenu axialement sous un effort prédéterminé, et susceptible d'être chassé par la pression des gaz de combustion. De préférence, cette autre rupture de chaîne est placée entre la charge d'éjection et le début de la chaîne pyrotechnique à retard.To achieve the second safety, which it is very advantageous to use according to the invention, the pyrotechnic chain further comprises another chain break, ensured by the interposition of a shutter block, the latter also being held axially under a predetermined effort, and capable of being driven out by the pressure of the combustion gases. Preferably, this other chain break is placed between the ejection charge and the start of the delay pyrotechnic chain.
De manière particulière, elle peut être réalisée par le fait que le bloc, qui coulisse-dans un alésage, comporte un épaulement logeant un joint torique plus grand que l'alésage, et venant buter sur celui-ci, dans la position où le bloc assure la rupture de chaîne, alors que la pression des gaz force le passage du bloc avec son joint dans l'alésage.In particular, it can be achieved by the fact that the block, which slides-in a bore, has a shoulder housing an O-ring larger than the bore, and abutting thereon, in the position where the block ensures the chain breaks, while the gas pressure forces the passage of the block with its seal in the bore.
De son côté, également dans un mode de réalisation particulier, la butée est avantageusement maintenue en position d'immobilisation du tiroir par une rondelle à dents ou un voile susceptible de céder sous un effort prédéterminé.For its part, also in a particular embodiment, the stop is advantageously maintained in the position of immobilization of the drawer by a toothed washer or a veil capable of yielding under a predetermined force.
Selon une autre caractéristique de l'invention, la pression des gaz sur le bloc obturateur déplace celui-ci axialement, en sens inverse du mouvement axial de la masselotte à raison de l'accélération au départ du coup.According to another characteristic of the invention, the pressure of the gases on the shutter block displaces the latter axially, in the opposite direction to the axial movement of the counterweight due to the acceleration at the start of the stroke.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, faite en référence aux dessins annexés, donnés pour illustrer à titre d'exemple non limitatif un mode de réalisation préférentiel de la présente invention, et sur lesquels :
- - la figure 1 est une vue en coupe du mode de réalisation préférentiel des cartouches selon la présente invention ;
- - la figure 2 est une autre vue en coupe, dans un plan perpendiculaire à celui de la figure 1 ;
- - la figure 3 est une vue de détail d'une fraction de la figure 1, destinée à illustrer mieux les éléments désignés généralement par 30 ;
- - la figure 4 est une section - droite formant la coupe B-B de la figure 1 ;
- - la figure 5 est une vue en coupe d'une autre section de la figure 2, destinée à illustrer les détails désignés globalement par 60 ; et
- - la figure 5A illustre plus précisément l'élément 62 de la figure 5.
- - Figure 1 is a sectional view of the preferred embodiment of the cartridges according to the present invention;
- - Figure 2 is another sectional view, in a plane perpendicular to that of Figure 1;
- - Figure 3 is a detail view of a fraction of Figure 1, intended to better illustrate the elements generally designated by 30;
- - Figure 4 is a cross-section forming the section BB of Figure 1;
- - Figure 5 is a sectional view of another section of Figure 2, intended to illustrate the details generally designated by 60; and
- FIG. 5A illustrates more precisely the
element 62 of FIG. 5.
La cartouche illustrée sur les figures 1 et 2 comporte un tube 1, solidaire d'un fond de douille 2, qui loge une charge pyrotechnique d'éjection 4, susceptible d'être excitée par une amorce électrique 3. En passant par les trous d'un paillet 5, les gaz dégagés par la charge d'éjection 4 vont propulser un projectile désigné généralement par la référence 10, ce projectile sortant lorsque va lâcher le bouchon 6 placé à l'autre extrémité, et retenu par sertissage ménagé au bout du tube 1.The cartridge illustrated in FIGS. 1 and 2 comprises a
Le projectile 10 comporte en partie supérieure une enveloppe définie par un disque 12 et un cylindre 11, cette enveloppe étant fixée par une vis 14 sur l'arbre central 13, qui vienten partie basse à son tour recevoir une vis 15 le fixant sur la pièce 16, perforée notamment en 17. Entre les parois d'extrémités 12 et 17 peut être ménagée une charge quelconque, par exemple un pain éclairant, qui sera allumé par des gaz dégagés par une charge de mise en oeuvre 72, et traversant les orifices 17. La plaque 16 est à son tour fixée sur le culot du projectile, qui est désigné par la référence générale 20, et peut être constitué en une ou plusieurs pièces solidaires.The
Comme le montrent les figures 2 et 4, ce culot comporte en partie médiane un tiroir coulissant, désigné par 50. Ce tiroir est muni d'alésagesdans lesquels sont sollicités vers l'extérieur des tétons 53 et 54, venant prendre appui sur la paroi externe de la pièce 20. De l'autre côté, le tiroir 50 comporte une tige 56, faisant saillie vers l'extérieur, jusqu'à traverser un orifice 57 ménagé dans la pièce 20, pour finalement venir s'appuyer sur le tube 1. On voit immédiatement que lorsque le projectile est sorti du tube, le tiroir 50 va se déplacer vers la gauche de la figure 4 pour venir en butée sur la paroi 20. Il en résulte alors que l'orifice 52 vient en position d'alignement, et permet ainsi une transmission de feu entre la charge-relais 51 de la figure 5 et la charge de mise en oeuvre 72 déjà mentionnée, à travers un mince voile 71.As shown in FIGS. 2 and 4, this base comprises in the middle part a sliding drawer, designated by 50. This drawer is provided with bores in which are drawn outwards from the
On va maintenant décrire les éléments de sécurité selon l'invention.We will now describe the security elements according to the invention.
Si l'on prend la chaîne pyrotechnique dans l'ordre, le premier de ces éléments de sécurité est constitué par ce que l'on a appelé précédemment "l'autre rupture de chaîne". Sur la figure 3, on voit la partie supérieure du volume 25 ménagé pour le développement, à travers les orifices de la pièce 5, des gaz dégagés par la charge d'éjection 4. Sous l'effet du dégagement gazeux, la pression monte dans cette chambre 25, et avant qu'elle n'atteigne une valeur suffisante pour déplacer le projectile, elle va avoir agi sur l'ensemble 30, constitué d'un bloc-obturateur-31, muni d'un épaulement en creux 32 logeant un joint torique 33, qui vient s'appuyer sur le bord inférieur d'un alésage 35. Lorsque la pression dans la chambre 25 assure une force suffisante sur la face inférieure de l'obturateur 31, le joint 33 va entrer dans l'alésage. Le bloc 31 se trouve alors chassé vers le haut, où il pourra être reçu dans un alvéole 36, ménagé à cet effet. Lorsqu'il aura passé le bord supérieur de l'alésage 35, le joint 33 empêchera à nouveau la rèdescente du bloc-obturateur 31.If we take the pyrotechnic chain in order, the first of these safety elements is constituted by what has previously been called "the other chain break". In Figure 3, we see the upper part of the
Les gaz dégagés par la charge d'éjection vont alors non seulement pouvoir assurer l'éjection du projectile, mais également allumer une charge pyrotechnique 40 formant relais à retard. Cette charge 40 est placée dans un alésage radial, aboutissant sur le côté de l'alésage 35 logeant le bloc-obturateur 31. Et cet alésage radial vient jusqu'à un orifice axial, permettant l'accès à une autre charge formant relais de transmission de feu 51.The gases released by the ejection charge will then not only to be able to eject the projectile, but also to ignite a
Pour des raisons technologiques, l'alésage radial qui loge la pièce 40 se prolonge jusqu'à l'extrémité opposée du bloc 20, par un autre alésage 41. Celui-ci a essentiellement pour but de permettre la mise en place de la composition à retard 41, ainsi que son tassement. Après construction, l'alésage 41 est refermé par un piston 42 solidaire d'une tête 43 avec interposition d'un joint d'étanchéité.For technological reasons, the radial bore which houses the
La charge relais 5i se trouve immédiatement en dessous du tiroir coulissant 50, et elle pourra donc assurer la poursuite de la transmission de feu, sous réserve que le tiroir 50 ait pu entre temps se déplacer, le projectile étant sorti du tube, afin d'amener l'orifice 52 en position axiale. On notera qu'en réalité l'allumage de la composition relais 51 peut se faire au môment désiré, puisqu'elle est placée après la charge à retard 40.The relay load 5i is located immediately below the
Si l'on revient maintenant à l'instant de départ du coup, les gaz dégagés par la charge d'éjection vont très rapidement communiquer une vive accélération au projectile. Cette accélération va s'exercer sur la masselotte 63 de la figure 5, qui est libre de coulisser dans une enceinte 64, tout effet de piston étant éliminé par un orifice 65 traversant la masselotte 63. Bien entendu, si au contraire on désirait ralentir le mouvement de la masselotte afin d'être sensible à une accélération pendant un certain temps, on pourrait donner à l'orifice 65 la section calibrée adéquate. Cette masselotte 63 va donc être sujette à une force dirigée vers le bas, et qui est proportionnelle à l'accélération communiquée au projectile, ainsi qu'à sa masse. Vissée sur la masselotte 63 se place une butée 61 faisant saillie dans le logement du tiroir 50 afin d'immobiliser celui-ci en position de rupture de chaîne. La masselotte 61 est retenue en position bloquant le tiroir par une rondelle 62, qui est une rondelle à' dents comme on le voit mieux sur la figure 5A. Cette rondelle à dents va s'ouvrir lorsque l'effort qui lui est appliqué par la butée 61 atteint un seuil prédéterminé, et par conséquent lorsque l'accélération communiquée à l'ensemble des pièces 61 et 63 atteint une valeur prédéterminée. Une fois que la butée est rentrée dans le logement défini par l'enceinte 64, elle ne péut plus en ressortir, et le tiroir 50 est par conséquent libre de venir en position/transmission de feu.If we now return to the instant of departure of the shot, the gases released by the ejection charge will very quickly communicate a sharp acceleration to the projectile. This acceleration will be exerted on the
On peut maintenant décrire le fonctionnement général de la cartouche selon l'invention. Après initiation de l'amorce 3, la charge d'éjection 4 commence à brûler, et produit un fort dégagement gazeux dans la chambre 25. Lors de la montée en pression, le bloc-obturateur 31 de la figure 3 va se trouver déplacé vers le haut, afin de permettre l'allumage de la charge à retard 40, qui va brûler pendant un temps préétabli, par exemple égal à 5/100 de secondes. En même temps ou peu après, le projectile 10 commence à se mouvoir. Son accélération atteint très rapidement une valeur très grande, suffisante pour déplacer la butée à l'encontre de la rondelle à dents 62, et libérer par conséquent le tiroir. Dès la sortie de bouche, le tiroir va donc pouvoir se mettre en position axiale, et autoriser la communication du feu entre la charge relais 51 et la charge de mise en oeuvre 72.We can now describe the general operation of the cartridge according to the invention. After initiation of the
Peu après le mouvement du tiroir, le retard pyrotechnique 40 va arriver en fin de combustion et allumer la charge relais 51, laquelle communiquera maintenant le feu à la charge de mise en oeuvre 72. A son tour, celle-ci pourra assurer non seulement le dépotement de la charge utile de la cartouche, mais également la mise à feu du pain éclairant ou de la charge analogue qu'elle peut contenir.Shortly after the movement of the slide, the
L'homme de l'art comprendra que la charge selon l'invention présente une très grande sécurité. Cette sécurité intervient également au niveau de chocs violents subis par la cartouche, car le déplacement du bloc-obturateur 31 se produit axialement,-mais en sens inverse du mouvement axial requis pour la masselotte 63 afin d'assurer la transmission de feu. Il en résulte qu'un violent choc vertical ne peut tout au plus que déplacer l'un des deux éléments, mais non les deux. D'autre part, ces organes sont placés au voisinage de plans axiaux de la cartouche qui sont perpendiculaires l'un à l'autre.Those skilled in the art will understand that the load according to the invention has very high security. This security also intervenes at the level of violent shocks undergone by the cartridge, because the displacement of the
Dans un mode de réalisation particulier, le joint torique 33 de la figure 3 est un joint au silicone pour basse température, qui présente l'avantage d'assurer un bon blocage du bloc-obturateur lorsque celui-ci ne se déplace pas. Il en résulte une quasi irréversibilité du déplacement du bloc-obturateur 31, sauf bien entendu sous l'effet des fortes accélérations qui peuvent intervenir lors du départ du coup.In a particular embodiment, the O-
La cartouche selon la présente invention s'applique avantageusement comme leurre infrarouge pour aéronef, car elle permet une excellente sécurité, même si le retard 40 est très bref, de façon à assurer un déploiement du leurre infrarouge très tôt après que le projectile a quitté l'aéronef, condition que l'homme de l'art reconnaîtra comme fort utile.The cartridge according to the present invention advantageously applies as an infrared decoy for aircraft, because it allows excellent safety, even if the
Bien entendu, la présente invention n'est pas limitée au mode de réalisation décrit et s'étend à toute variante conforme à son esprit.Of course, the present invention is not limited to the embodiment described and extends to any variant in accordance with its spirit.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT81401413T ATE10136T1 (en) | 1980-09-12 | 1981-09-11 | CARTRIDGE WITH PYROTECHNICALLY ACTUATED PAYLOAD AND WITH SAFETY DEVICES. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8019720A FR2490333B1 (en) | 1980-09-12 | 1980-09-12 | CARTRIDGE HAVING PYROTECHNIC USEFUL LOAD WITH SECURITY |
FR8019720 | 1980-09-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0048204A1 true EP0048204A1 (en) | 1982-03-24 |
EP0048204B1 EP0048204B1 (en) | 1984-10-31 |
Family
ID=9245878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81401413A Expired EP0048204B1 (en) | 1980-09-12 | 1981-09-11 | Pyrotechnically activated cartridge with useful load with a safety |
Country Status (8)
Country | Link |
---|---|
US (1) | US4454816A (en) |
EP (1) | EP0048204B1 (en) |
AT (1) | ATE10136T1 (en) |
CA (1) | CA1170108A (en) |
DE (1) | DE3166985D1 (en) |
ES (1) | ES8206840A1 (en) |
FR (1) | FR2490333B1 (en) |
NO (1) | NO150578C (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4391754A (en) * | 1980-07-29 | 1983-07-05 | Imperial Chemical Industries Plc | Anthraquinone compounds |
EP0104138A2 (en) * | 1982-09-16 | 1984-03-28 | Ems-Inventa AG | Device for arming and sterilising an electric fuze for ammunition |
US4498392A (en) * | 1981-06-03 | 1985-02-12 | Etienne Lacroix - Tous Artifices | Infrared decoy launching device to be deployed rapidly with a double safety device |
FR2592475A1 (en) * | 1985-12-27 | 1987-07-03 | Lacroix E Tous Artifices | Charge with pyrotechnic actuation and munition incorporating the latter |
WO2001007861A1 (en) * | 1999-07-22 | 2001-02-01 | Alliant Techsystems Inc. | Igniter assembly actuated by parachute deployment, and flare containing the same |
US6782826B1 (en) * | 1999-11-18 | 2004-08-31 | Metal Storm Limited | Decoy |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3339745C2 (en) * | 1983-11-03 | 1986-10-02 | Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf | Adaptation cartridge for insert pipe system |
US4646644A (en) * | 1984-04-09 | 1987-03-03 | Sanders Associates, Inc. | Pneumatic time delay valve |
US4549486A (en) * | 1984-05-25 | 1985-10-29 | The United States Of America As Represented By The Secretary Of The Army | Smoke canister |
US5092244A (en) * | 1984-07-11 | 1992-03-03 | American Cyanamid Company | Radar- and infrared-detectable structural simulation decoy |
US4982663A (en) * | 1986-05-16 | 1991-01-08 | Aai Corporation | Safe-and-arm arrangement and projectile arrangement therewith |
FR2672978B1 (en) * | 1991-02-18 | 1993-06-18 | Lacroix E Tous Artifices | AMMUNITION LAUNCHER. |
US5129323A (en) * | 1991-05-24 | 1992-07-14 | American Cyanamid Company | Radar-and infrared detectable structural simulation decoy |
FR2702273B1 (en) * | 1993-03-05 | 1995-06-02 | Lacroix E Tous Artifices | Pyrotechnic head with advanced means of dispersion. |
US5834682A (en) * | 1995-02-03 | 1998-11-10 | Warren; Cyrus E. | Radar signal cartridge |
US5763818A (en) * | 1995-06-30 | 1998-06-09 | Thiokol Corporation | Illuminant igniter pellet ignition system for use in a decoy flare |
DE19919001A1 (en) * | 1999-04-27 | 2000-11-09 | Junghans Gmbh Geb | Pyrotechnic self-dismantling for ammunition |
DK174402B1 (en) * | 2000-05-09 | 2003-02-10 | Gn Netcom As | communication Unit |
US7726243B2 (en) * | 2006-11-14 | 2010-06-01 | Alliant Techsystems Inc. | Igniter safe and arm, igniter assembly and flare so equipped and method of providing a safety for an igniter assembly |
FR2981443B1 (en) * | 2011-10-17 | 2013-11-29 | Sme | GAS GENERATOR PROVIDED WITH SAFETY BODY FOR SLOW HEATING CASES |
US9903695B1 (en) * | 2012-02-06 | 2018-02-27 | Schlumberger Technology Corporation | Method and device for initiating an explosive train |
US8776691B2 (en) * | 2012-06-04 | 2014-07-15 | Csi-Penn Arms, Llc | Launched smoke grenade |
CN103115530B (en) * | 2013-03-15 | 2014-11-26 | 南通天地通网络工程有限公司 | Wireless remote controlled launch type fireworks and firecrackers |
FR3018112B1 (en) * | 2014-03-03 | 2018-04-20 | Etienne Lacroix Tous Artifices S.A. | AIRCRAFT SANDING CARTRIDGE |
US9829288B2 (en) | 2015-09-17 | 2017-11-28 | Orbital Atk, Inc. | Retention clips for safety mechanisms of illumination flares and safety mechanisms |
JP6563773B2 (en) * | 2015-10-20 | 2019-08-21 | 株式会社ダイセル | Smoke screen generator |
CN108007278B (en) * | 2017-12-17 | 2020-05-01 | 上栗县东森阳光烟花制造有限公司 | Device for preventing fireworks from being set off by mistake |
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FR672710A (en) * | 1928-07-20 | 1930-01-06 | Schneider Et Cie | Instant percussion fuze with safety against premature operation |
FR737306A (en) * | 1931-06-08 | 1932-12-09 | Anciens Ets Skoda | Mechanical delay for projectile rockets |
US2118062A (en) * | 1937-09-21 | 1938-05-24 | David L Woodberry | Bore-safe fuse |
US2388691A (en) * | 1942-08-06 | 1945-11-13 | John J Horan | Fuse |
FR1311002A (en) * | 1961-02-23 | 1962-11-30 | Borletti Spa | Percussion fuze for non-rotating projectiles |
FR1549836A (en) * | 1967-02-17 | 1968-12-13 | ||
FR2126703A5 (en) * | 1971-02-13 | 1972-10-06 | Rheinmetall Gmbh |
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US1806877A (en) * | 1931-05-26 | Point detonating fitse | ||
US1842467A (en) * | 1930-02-13 | 1932-01-26 | David L Woodberry | Point detonating fuse |
US2993648A (en) * | 1959-01-05 | 1961-07-25 | Phillips Petroleum Co | Jet propelled spraying device |
GB1203698A (en) * | 1967-11-24 | 1970-09-03 | Ici Ltd | Process for the reduction of aromatic nitro compounds |
US3736876A (en) * | 1970-06-26 | 1973-06-05 | Us Navy | Catalyst generator |
CH531158A (en) * | 1970-11-03 | 1972-11-30 | Mefina Sa | Safety device for rotating projectile rocket |
US3712224A (en) * | 1971-06-21 | 1973-01-23 | Us Navy | Decoy flare with traveling ignition charge |
SE407286B (en) * | 1975-11-07 | 1979-03-19 | Bofors Ab | FUSE DEVICE |
US4007690A (en) * | 1975-11-21 | 1977-02-15 | The United States Of America As Represented By The Secretary Of The Navy | Practice bomb signal for day or night operation |
GB1534134A (en) * | 1975-12-12 | 1978-11-29 | Lacroix Soc E | Lure launching cartridges |
-
1980
- 1980-09-12 FR FR8019720A patent/FR2490333B1/en not_active Expired
-
1981
- 1981-09-02 NO NO812979A patent/NO150578C/en unknown
- 1981-09-08 US US06/300,264 patent/US4454816A/en not_active Expired - Lifetime
- 1981-09-10 ES ES506039A patent/ES8206840A1/en not_active Expired
- 1981-09-10 CA CA000385617A patent/CA1170108A/en not_active Expired
- 1981-09-11 DE DE8181401413T patent/DE3166985D1/en not_active Expired
- 1981-09-11 EP EP81401413A patent/EP0048204B1/en not_active Expired
- 1981-09-11 AT AT81401413T patent/ATE10136T1/en not_active IP Right Cessation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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FR672710A (en) * | 1928-07-20 | 1930-01-06 | Schneider Et Cie | Instant percussion fuze with safety against premature operation |
FR737306A (en) * | 1931-06-08 | 1932-12-09 | Anciens Ets Skoda | Mechanical delay for projectile rockets |
US2118062A (en) * | 1937-09-21 | 1938-05-24 | David L Woodberry | Bore-safe fuse |
US2388691A (en) * | 1942-08-06 | 1945-11-13 | John J Horan | Fuse |
FR1311002A (en) * | 1961-02-23 | 1962-11-30 | Borletti Spa | Percussion fuze for non-rotating projectiles |
FR1549836A (en) * | 1967-02-17 | 1968-12-13 | ||
FR2126703A5 (en) * | 1971-02-13 | 1972-10-06 | Rheinmetall Gmbh |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4391754A (en) * | 1980-07-29 | 1983-07-05 | Imperial Chemical Industries Plc | Anthraquinone compounds |
US4498392A (en) * | 1981-06-03 | 1985-02-12 | Etienne Lacroix - Tous Artifices | Infrared decoy launching device to be deployed rapidly with a double safety device |
EP0104138A2 (en) * | 1982-09-16 | 1984-03-28 | Ems-Inventa AG | Device for arming and sterilising an electric fuze for ammunition |
EP0104138A3 (en) * | 1982-09-16 | 1984-09-12 | Ems-Inventa Ag | Device for arming and sterilising an electric fuze for ammunition |
FR2592475A1 (en) * | 1985-12-27 | 1987-07-03 | Lacroix E Tous Artifices | Charge with pyrotechnic actuation and munition incorporating the latter |
WO2001007861A1 (en) * | 1999-07-22 | 2001-02-01 | Alliant Techsystems Inc. | Igniter assembly actuated by parachute deployment, and flare containing the same |
GB2367607A (en) * | 1999-07-22 | 2002-04-10 | Alliant Techsystems Inc | Igniter assembly actuated by parachute deployment,and flare containing the same |
US6412417B1 (en) | 1999-07-22 | 2002-07-02 | Alliant Techsystems Inc. | Igniter assembly actuated by parachute deployment, and flare containing the same |
GB2367607B (en) * | 1999-07-22 | 2003-12-10 | Alliant Techsystems Inc | Igniter assembly actuated by parachute deployment,and flare containing the same |
US6782826B1 (en) * | 1999-11-18 | 2004-08-31 | Metal Storm Limited | Decoy |
Also Published As
Publication number | Publication date |
---|---|
FR2490333B1 (en) | 1986-05-02 |
NO150578C (en) | 1984-11-07 |
ATE10136T1 (en) | 1984-11-15 |
NO812979L (en) | 1982-03-15 |
EP0048204B1 (en) | 1984-10-31 |
DE3166985D1 (en) | 1984-12-06 |
US4454816A (en) | 1984-06-19 |
NO150578B (en) | 1984-07-30 |
CA1170108A (en) | 1984-07-03 |
ES506039A0 (en) | 1982-08-16 |
ES8206840A1 (en) | 1982-08-16 |
FR2490333A1 (en) | 1982-03-19 |
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