EP3264021B1 - Flexible seal for missile container - Google Patents

Flexible seal for missile container Download PDF

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Publication number
EP3264021B1
EP3264021B1 EP17290081.3A EP17290081A EP3264021B1 EP 3264021 B1 EP3264021 B1 EP 3264021B1 EP 17290081 A EP17290081 A EP 17290081A EP 3264021 B1 EP3264021 B1 EP 3264021B1
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EP
European Patent Office
Prior art keywords
flexible cover
layer
main layer
missile
cover according
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EP17290081.3A
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German (de)
French (fr)
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EP3264021A1 (en
Inventor
Bertrand Leroy
Pascal Herquel
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MBDA France SAS
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MBDA France SAS
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41FAPPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
    • F41F3/00Rocket or torpedo launchers
    • F41F3/04Rocket or torpedo launchers for rockets
    • F41F3/077Doors or covers for launching tubes

Description

La présente invention concerne un opercule flexible pour conteneur de missile.The present invention relates to a flexible cover for a missile container.

On sait qu'un opercule de conteneur a pour fonction de fermer hermétiquement le conteneur afin de protéger un missile installé dans ce conteneur. L'opercule doit pouvoir s'ouvrir afin de laisser passer le missile ou les gaz de propulsion lors du tir de ce dernier.We know that a container lid has the function of hermetically closing the container in order to protect a missile installed in this container. The seal must be able to open in order to allow the missile or the propellant gases to pass when the latter is fired.

Généralement, les opercules se divisent en deux catégories :

  • des opercules fragmentables, qui sont réalisés en général en matériaux composites ; et
  • des mécanismes à ouvertures automatiques, le plus généralement métalliques.
Generally, the lids are divided into two categories:
  • fragmentable lids, which are generally made of composite materials; and
  • automatic opening mechanisms, most generally metallic.

Ces solutions présentent différents inconvénients. Plus précisément, les inconvénients de ces solutions sont :

  • pour les opercules en matériaux composites :
    • la présence de débris projetés à des vitesses élevées dans diverses directions, ces débris présentant un danger pour les équipements à proximité, et même parfois pour le missile lui-même ; et
    • dans certains cas, un effort important sur le radôme du missile lors de la traversée de l'opercule en phase de départ ; et
  • pour les mécanismes à ouvertures automatiques :
    • une gestion plus complexe de la sécurité afin de garantir l'ouverture ;
    • une masse beaucoup plus importante ; et
    • un coût de fabrication élevé.
These solutions have various drawbacks. More specifically, the disadvantages of these solutions are:
  • for covers made of composite materials:
    • the presence of debris projected at high speeds in various directions, this debris posing a danger to nearby equipment, and even sometimes to the missile itself; and
    • in some cases, a significant effort on the radome of the missile during the crossing of the cover during the departure phase; and
  • for automatic opening mechanisms:
    • more complex security management to ensure openness;
    • a much larger mass; and
    • a high manufacturing cost.

Par ailleurs, on connaît, par le document US 4 498 368 , un diaphragme fragilisé destiné à la fermeture d'un tube de lancement de missile, pouvant céder sous une force de poussée particulière.Furthermore, we know from the document US 4,498,368 , a weakened diaphragm intended for the closure of a missile launching tube, which may fail under a particular thrust force.

La présente invention a pour objet de pallier au moins certains des inconvénients précités. Plus précisément, elle a pour objet de remédier au problème des débris présentant un danger pour les équipements, tout en garantissant un effort modéré sur le radôme du missile, une faible masse et un coût de fabrication réduit.The object of the present invention is to overcome at least some of the aforementioned drawbacks. More specifically, it aims to remedy the problem of debris presenting a danger to the equipment, while guaranteeing a moderate effort on the missile radome, a low mass and a reduced manufacturing cost.

La présente invention concerne un opercule flexible, destiné à être monté sur un conteneur de missile et apte à s'ouvrir sous une poussée.The present invention relates to a flexible cover, intended to be mounted on a missile container and capable of opening under a push.

Selon l'invention, l'opercule flexible comporte :

  • une couche dite principale, formée d'un matériau composite constitué d'au moins un tissu et d'au moins un élastomère ; et
  • au moins une couche dite auxiliaire, formée d'un matériau composite constitué également d'au moins un tissu et d'au moins un élastomère, ladite couche auxiliaire étant solidarisée de ladite couche principale sur l'une des faces de cette dernière, ladite couche auxiliaire comprenant des zones en forme de pétales, séparées les unes des autres par des lignes dites de fragilisation, ladite couche principale et ladite au moins une couche auxiliaire formant une pièce composite, caractérisé en ce que ladite au moins une couche auxiliaire est liée à ladite couche principale par des coutures et en ce qu'au moins certaines desdites coutures sont agencées le long des lignes de fragilisation.
According to the invention, the flexible cover comprises:
  • a so-called main layer, formed of a composite material consisting of at least one fabric and at least one elastomer; and
  • at least one so-called auxiliary layer, formed of a composite material also consisting of at least one fabric and at least one elastomer, said auxiliary layer being integral with said main layer on one of the faces of the latter, said layer auxiliary comprising petal-shaped zones, separated from each other by so-called weakening lines, said main layer and said at least one auxiliary layer forming a composite part, characterized in that said at least one auxiliary layer is linked to said main layer by seams and in that at least some of said seams are arranged along the lines of weakness.

Ainsi, grâce à l'invention, le ou les tissus qui sont introduits dans l'élastomère pour former la pièce composite assurent la tenue mécanique de l'opercule flexible qui est, de plus, rendu hermétique grâce notamment à l'élastomère. De plus, ladite au moins une couche auxiliaire (comprenant des zones en forme de pétales définissant des lignes de fragilisation) permet de diriger une découpe précise de l'opercule flexible, le long desdites lignes de fragilisation, ce qui permet une ouverture facilitée. En outre, la pièce en matériau composite présente une grande souplesse (ou flexibilité), ce qui permet à l'opercule flexible de revenir, après une ouverture, vers une position proche de la position avant l'ouverture.Thus, thanks to the invention, the fabric or fabrics which are introduced into the elastomer to form the composite part ensure the mechanical strength of the flexible seal which is, moreover, made airtight thanks in particular to the elastomer. In addition, said at least one auxiliary layer (comprising zones in the form of petals defining weakening lines) makes it possible to direct a precise cutting of the flexible cover, along said weakening lines, which allows easier opening. In addition, the piece of composite material has great flexibility (or flexibility), which allows the flexible seal to return, after opening, to a position close to the position before opening.

On obtient ainsi un opercule flexible qui permet d'éviter la génération de débris (présentant un danger pour les équipements), tout en garantissant un effort modéré sur le radôme du missile, une faible masse et un coût de fabrication réduit.A flexible cover is thus obtained which makes it possible to avoid the generation of debris (presenting a danger for the equipment), while guaranteeing a moderate effort on the radome of the missile, a low mass and a reduced manufacturing cost.

De façon avantageuse, l'opercule flexible comporte :

  • deux couches auxiliaires agencées de part et d'autre de la couche principale. De préférence, les deux couches auxiliaires sont agencées, avec leurs zones en forme de pétales, symétriquement, par rapport à un plan sensiblement central de la couche principale ; et
  • un revêtement antifriction sur une face dite interne destinée à être placée vers l'intérieur du conteneur. Ce revêtement antifriction permet notamment de limiter les frottements lors du passage du missile.
Advantageously, the flexible cover comprises:
  • two auxiliary layers arranged on either side of the main layer. Preferably, the two auxiliary layers are arranged, with their petal-shaped zones, symmetrically, with respect to a substantially central plane of the main layer; and
  • an anti-friction coating on a so-called internal face intended to be placed towards the interior of the container. This anti-friction coating makes it possible in particular to limit friction during the passage of the missile.

Selon l'invention, ladite au moins une couche auxiliaire est liée à ladite couche principale par des coutures, ce qui permet d'assurer une bonne tenue des zones en forme de pétales. Ces coutures participent également au maintien lors du procédé de fabrication de l'opercule flexible.According to the invention, said at least one auxiliary layer is linked to said main layer by seams, which ensures good hold of the petal-shaped areas. These seams also participate in the maintenance during the manufacturing process of the flexible seal.

Selon l'invention, au moins certaines desdites coutures sont agencées le long des lignes de fragilisation, ce qui permet de renforcer le maintien le long des lignes de fragilisation.According to the invention, at least some of said seams are arranged along the lines of weakness, which makes it possible to reinforce the support along the lines of weakness.

Avantageusement :

  • au moins certaines desdites coutures sont agencées transversalement auxdites lignes de fragilisation ;
  • des coutures sont prévues sur l'ensemble de la surface des zones en forme de pétales ;
  • les zones en forme de pétales sont agencées de sorte que les lignes de fragilisation sont orientées radialement par rapport au centre de l'opercule flexible.
Advantageously:
  • at least some of said seams are arranged transversely to said weakening lines;
  • seams are provided over the entire surface of the petal-shaped areas;
  • the petal-shaped zones are arranged so that the weakening lines are oriented radially with respect to the center of the flexible cover.

Dans un mode de réalisation préféré :

  • le matériau composite formant ladite au moins une couche auxiliaire est identique au matériau composite formant la couche principale. Dans le cadre de la présente invention, le matériau composite formant la couche auxiliaire peut également être différent du matériau composite formant la couche principale ;
  • les lignes de fragilisation sont remplies d'élastomère.
In a preferred embodiment:
  • the composite material forming said at least one auxiliary layer is identical to the composite material forming the main layer. In the context of the present invention, the composite material forming the auxiliary layer can also be different from the composite material forming the main layer;
  • the embrittlement lines are filled with elastomer.

La présente invention concerne également un conteneur de missile, qui comporte au moins un opercule flexible tel que décrit ci-dessus.The present invention also relates to a missile container, which comprises at least one flexible cover as described above.

La présente invention concerne, en outre, un système d'arme qui comprend au moins un tel conteneur de missile.The present invention further relates to a weapon system which includes at least one such missile container.

Les figures annexées feront bien comprendre comment l'invention peut être réalisée. Sur ces figures, des références identiques désignent des éléments semblables.

  • La figure 1 est une coupe transversale schématique d'un mode de réalisation préféré d'un opercule flexible selon l'invention.
  • La figure 2 une coupe transversale schématique d'un autre mode de réalisation d'un opercule flexible selon l'invention.
  • Les figures 3 et 4 sont deux vues schématiques en plan, illustrant des modes de réalisation différents de lignes de fragilisation d'un opercule flexible.
  • La figure 5 est une vue en plan similaire à celle de la figure 3 avec un mode d'agencement particulier de coutures.
  • La figure 6 est une vue schématique, en perspective, de moyens de fixation d'un opercule flexible.
The appended figures will make it clear how the invention can be implemented. In these figures, identical references designate similar elements.
  • The figure 1 is a schematic cross section of a preferred embodiment of a flexible seal according to the invention.
  • The figure 2 a schematic cross section of another embodiment of a flexible seal according to the invention.
  • The figures 3 and 4 are two schematic plan views, illustrating different embodiments of lines of weakness of a flexible seal.
  • The figure 5 is a plan view similar to that of the figure 3 with a particular mode of arrangement of seams.
  • The figure 6 is a schematic perspective view of means for fixing a flexible cover.

L'opercule flexible 1 illustrant l'invention et représenté de façon schématique sur la figure 1 est destiné à être monté sur un conteneur de missile (non représenté).The flexible seal 1 illustrating the invention and shown schematically on the figure 1 is intended to be mounted on a missile container (not shown).

Ce conteneur de missile fait partie d'un système d'arme (également non représenté).This missile container is part of a weapon system (also not shown).

L'opercule flexible 1 a pour fonction de fermer hermétiquement le conteneur afin de protéger un missile installé dans le conteneur. L'opercule flexible doit pouvoir s'ouvrir afin de laisser passer le missile ou les gaz de propulsion lors d'un tir de ce dernier.The flexible seal 1 has the function of hermetically closing the container in order to protect a missile installed in the container. The flexible seal must be able to open in order to allow the missile or the propellant gases to pass when the latter is fired.

Pour ce faire, l'opercule flexible 1 est configuré pour s'ouvrir sous une poussée. Dans le cadre de la présente invention, cette poussée peut être générée lors d'un tir par un contact de l'opercule flexible par le missile, ou bien par une surpression interne générée par des moyens dédiés ou par des gaz de propulsion du missile.To do this, the flexible cover 1 is configured to open under a push. In the context of the present invention, this thrust can be generated during a firing by a contact of the flexible seal by the missile, or else by an internal overpressure generated by dedicated means or by propellant gases of the missile.

Selon l'invention, l'opercule flexible 1 comporte, comme représenté sur les figures 1 et 2 :

  • au moins une couche (ou peau) composite, dite couche principale 2. Cette couche principale 2 est formée complètement (sur toute sa surface) d'un matériau composite 9 constitué d'au moins un tissu et d'au moins un élastomère ; et
  • au moins une couche (ou peau) composite supplémentaire, dite couche auxiliaire 3, 4. Chacune desdites couches auxiliaires 3 et 4 est formée d'un matériau composite 10 constitué d'au moins un tissu et d'au moins un élastomère. Chaque couche auxiliaire 3, 4 est liée (ou solidarisée ou unie) à ladite couche composite 2 sur l'une des faces 2A, 2B de cette dernière.
According to the invention, the flexible cover 1 comprises, as shown in the figures 1 and 2 :
  • at least one composite layer (or skin), called the main layer 2. This main layer 2 is formed completely (over its entire surface) of a composite material 9 consisting of at least one fabric and at least one elastomer; and
  • at least one additional composite layer (or skin), called auxiliary layer 3, 4. Each of said auxiliary layers 3 and 4 is formed from a composite material 10 consisting of at least one fabric and at least one elastomer. Each auxiliary layer 3, 4 is linked (or secured or united) to said composite layer 2 on one of the faces 2A, 2B of the latter.

De plus, chaque couche auxiliaire 3, 4 comprend une pluralité de zones 6 (constituées de matériau composite 10) en forme de pétales, par exemple de forme triangulaire, qui sont séparées les unes des autres par des lignes de séparation, dites lignes de fragilisation 5.In addition, each auxiliary layer 3, 4 comprises a plurality of zones 6 (made of composite material 10) in the form of petals, for example of triangular shape, which are separated from each other by dividing lines, called weakening lines 5.

Ces lignes de fragilisation 5, exemptes de tissu, sont remplies d'élastomère (du matériau composite 10), comme représenté en noir sur les figures 1 et 2.These embrittlement lines 5, free of fabric, are filled with elastomer (of the composite material 10), as shown in black on the figures 1 and 2 .

Ladite couche principale 2 et ladite au moins une couche auxiliaire 3, 4 forment ainsi une pièce composite 8 monobloc. Dans un mode de réalisation préféré, le matériau composite 10 formant la ou les couches auxiliaires 3, 4 est identique au matériau composite 9 formant la couche principale 2.Said main layer 2 and said at least one auxiliary layer 3, 4 thus form a one-piece composite part 8. In a preferred embodiment, the composite material 10 forming the auxiliary layer or layers 3, 4 is identical to the composite material 9 forming the main layer 2.

La couche composite 2 et la ou les couches auxiliaires 3, 4 forment donc une pièce composite 8 flexible qui, grâce à sa flexibilité (ou souplesse), permet à l'opercule flexible 1 de revenir, après une ouverture, vers une position qui est proche de sa position avant l'ouverture, comme précisé ci-dessous.The composite layer 2 and the auxiliary layer (s) 3, 4 therefore form a flexible composite part 8 which, thanks to its flexibility (or suppleness), allows the flexible cover 1 to return, after opening, to a position which is close to its position before opening, as specified below.

L'agencement de la ou des couches auxiliaires 3, 4 avec des zones 6 en forme de pétales permet de diriger une découpe précise du matériau composite (élastomère/tissu), le long des lignes de fragilisation 5 formées entre ces zones 6.The arrangement of the auxiliary layer (s) 3, 4 with zones 6 in the form of petals makes it possible to direct a precise cutting of the composite material (elastomer / fabric), along the lines of weakness 5 formed between these zones 6.

En outre, le ou les tissus qui sont insérés dans l'élastomère pour former le matériau composite 9, 10 assurent la tenue mécanique de l'opercule flexible 1. Ce ou ces tissus sont réalisés, en particulier, à base de fibres de carbone ou de fibres de verre, ou bien de fibres textiles (polyester, polyamide,...).In addition, the fabric or fabrics which are inserted into the elastomer to form the composite material 9, 10 ensure the mechanical strength of the flexible seal 1. This or these fabrics are made, in particular, from fibers of carbon or glass fibers, or textile fibers (polyester, polyamide, ...).

Le matériau composite 9, 10 permet également, grâce à l'élastomère, de rendre l'opercule flexible 1 hermétique. L'élastomère peut être réalisé en différentes matières. De préférence, cet élastomère est de type butyle, néoprène, silicone, ...The composite material 9, 10 also makes it possible, thanks to the elastomer, to make the flexible seal 1 hermetic. The elastomer can be made of different materials. Preferably, this elastomer is of the butyl, neoprene, silicone type, etc.

Dans un premier mode de réalisation préféré, représenté sur la figure 1, l'opercule flexible 1 comporte deux couches auxiliaires 3 et 4 qui sont agencées de part et d'autre de la couche principale 2, respectivement sur les faces 2A et 2B de cette dernière.In a first preferred embodiment, shown in the figure 1 , the flexible cover 1 comprises two auxiliary layers 3 and 4 which are arranged on either side of the main layer 2, respectively on the faces 2A and 2B of the latter.

Les deux couches auxiliaires 3, 4 sont agencées, avec leurs zones 6 en forme de pétales, symétriquement, par rapport à un plan P sensiblement central de la couche principale 2 de forme générale plane. Ainsi, les zones de fragilisation sont situées à la même position de part et d'autre de la couche principale 2.The two auxiliary layers 3, 4 are arranged, with their zones 6 in the form of petals, symmetrically, with respect to a substantially central plane P of the main layer 2 of generally planar shape. Thus, the weakening zones are located in the same position on either side of the main layer 2.

Par ailleurs, dans un second mode de réalisation simplifié, représenté sur la figure 2, une seule couche auxiliaire 3 (tissu/élastomère) est prévue sur la face 2A externe de la couche principale 2 (tissu/élastomère), c'est-à-dire sur la face 1A qui sera dirigée vers l'extérieur du conteneur dans la position montée de l'opercule flexible 1. Ceci permet de limiter les efforts nécessaires à l'ouverture.Furthermore, in a second simplified embodiment, shown in the figure 2 , a single auxiliary layer 3 (fabric / elastomer) is provided on the outer side 2A of the main layer 2 (fabric / elastomer), that is to say on the side 1A which will be directed towards the outside of the container in the mounted position of the flexible cover 1. This makes it possible to limit the forces necessary for opening.

Sur la figure 1, on a également représenté les faces internes 1B et 2B de l'opercule flexible 1 et de la couche principale 2.On the figure 1 , the internal faces 1B and 2B of the flexible cover 1 and of the main layer 2 have also been shown.

Par ailleurs, comme représenté sur les figures 1 et 2, l'opercule flexible 1 comporte, de plus, un revêtement antifriction 11 sur la face interne 1B, qui est donc destinée à être placée vers l'intérieur du conteneur.Furthermore, as shown in the figures 1 and 2 , the flexible cover 1 further comprises an anti-friction coating 11 on the internal face 1B, which is therefore intended to be placed towards the interior of the container.

Ce revêtement antifriction 11 permet, notamment, de limiter les frottements lors du passage du missile à travers l'opercule flexible 1.This anti-friction coating 11 makes it possible, in particular, to limit friction during the passage of the missile through the flexible cover 1.

Le revêtement antifriction 11 est réalisé par exemple à partir d'un matériau métallique, ce qui permet, en plus de réduire le coefficient de friction, d'assurer une continuité électrique.The anti-friction coating 11 is produced for example from a metallic material, which makes it possible, in addition to reducing the coefficient of friction, to ensure electrical continuity.

Les zones 6 permettent donc de créer les lignes de fragilisation 5, ce qui facilite le déchirement du matériau composite 9 (tissu/élastomère) de la couche principale 2 suivant des directions précises. De préférence, les lignes de fragilisation 5 sont agencées radialement par rapport au centre 12 de l'opercule flexible 1, comme représenté sur les figures 3 à 5.The zones 6 therefore make it possible to create the weakening lines 5, which facilitates the tearing of the composite material 9 (fabric / elastomer) of the main layer 2 in precise directions. Preferably, the weakening lines 5 are arranged radially with respect to the center 12 of the flexible cover 1, as shown in the figures 3 to 5 .

En fonction de la taille du missile et de l'opercule, les lignes de fragilisation 5 sont plus ou moins nombreuses, par exemple deux lignes orientées selon les diagonales comme sur les exemples des figures 3 et 5 ou quatre lignes orientées selon les diagonales et les médiatrices des côtés comme représenté sur l'exemple de la figure 4.Depending on the size of the missile and the cover, the weakening lines 5 are more or less numerous, for example two lines oriented along the diagonals as in the examples of figures 3 and 5 or four lines oriented along the diagonals and the perpendicular bisectors of the sides as shown in the example of the figure 4 .

D'autres formes peuvent bien entendu être prévues pour les lignes de fragilisation dans le cadre de la présente invention.Other forms can of course be provided for the lines of weakness in the context of the present invention.

Par ailleurs, selon l'invention, notamment pour assurer une bonne tenue des pétales, chaque couche auxiliaire 3, 4 est liée à la couche principale 2 par des coutures 13 et 14 (figures 3 à 5). Ces coutures 13 et 14, par le maintien supplémentaire qu'elles fournissent, apportent une aide au déchirement de la couche principale 2 au niveau des lignes de fragilisation 5. Ces coutures 13 et 14 participent également au maintien du tissu des couches auxiliaires 3 et 4 sur la couche principale 2, lors du procédé de fabrication de l'opercule flexible. Elles sont réalisées de façon usuelle à partir de fils, par exemple en polyamide, qui correspondent, de préférence mais non exclusivement, aux fils des tissus utilisés pour former les matériaux composites 9 et 10.Furthermore, according to the invention, in particular to ensure good resistance of the petals, each auxiliary layer 3, 4 is linked to the main layer 2 by seams 13 and 14 ( figures 3 to 5 ). These seams 13 and 14, by the additional support that they provide, provide tearing aid for the main layer 2 at the level of the weakening lines 5. These seams 13 and 14 also participate in the maintenance of the fabric of the auxiliary layers 3 and 4 on the main layer 2, during the manufacturing process of the flexible seal. They are produced in the usual way from threads, for example polyamide, which correspond, preferably but not exclusively, to the threads of the fabrics used to form the composite materials 9 and 10.

Certaines coutures 13 sont agencées dans les zones 6, parallèlement aux lignes de fragilisation 5, suivant des lignes de couture 15, ce qui permet de faciliter le déchirement le long des lignes de fragilisation 5.Certain seams 13 are arranged in the zones 6, parallel to the lines of weakness 5, along seam lines 15, which makes it easier to tear along the lines of weakness 5.

En outre, dans un mode de réalisation particulier, représenté sur la figure 5, certaines coutures 14 sont agencées transversalement auxdites lignes de fragilisation 5.In addition, in a particular embodiment, shown in the figure 5 , certain seams 14 are arranged transversely to said weakening lines 5.

Par ailleurs, dans un mode de réalisation particulier (non représenté), des coutures peuvent être prévues sur l'ensemble de la surface des zones 6 en forme de pétales. La répartition de ces coutures peut alors prendre différentes formes.Furthermore, in a particular embodiment (not shown), seams may be provided over the entire surface of the zones 6 in the shape of petals. The distribution of these seams can then take different forms.

L'opercule flexible 1, tel que décrit ci-dessus, présente notamment les avantages suivants :

  • une ouverture et une re-fermeture facilitées ;
  • un coût de fabrication réduit ;
  • une masse réduite ;
  • une absence de génération de débris. À titre d'illustration, l'opercule flexible 1 peut être conçu pour des conteneurs de dimensions variables, et en particulier :
  • pour un conteneur cylindrique, de diamètre compris entre 100 mm (millimètres) et 1000 mm ; ou
  • pour un conteneur parallélépipédique, de section comprise entre 100x100 mm et 1000x1000 mm.
The flexible seal 1, as described above, has the following advantages in particular:
  • easier opening and re-closing;
  • reduced manufacturing cost;
  • reduced mass;
  • no generation of debris. By way of illustration, the flexible seal 1 can be designed for containers of variable dimensions, and in particular:
  • for a cylindrical container, with a diameter between 100 mm (millimeters) and 1000 mm; or
  • for a rectangular container, with a section between 100x100 mm and 1000x1000 mm.

De plus, l'opercule flexible 1 est conçu, de préférence, pour tenir des pressions comprises entre 1 et 5 bars, et pour s'ouvrir à partir de 5 bars.In addition, the flexible cover 1 is preferably designed to hold pressures between 1 and 5 bars, and to open from 5 bars.

On présente, à présent, de façon générale, un procédé de fabrication d'un opercule flexible 1 tel que décrit ci-dessus. Ce procédé de fabrication comprend, notamment, les étapes suivantes :

  • une étape de mise en place du tissu de la couche principale 2 à partir de fils imprégnés ;
  • une étape de mise en place du tissu de la ou des couches auxiliaires 3, 4, avec une fixation à l'aide de coutures 13, 14 sur le tissu de la couche principale 2 ; et
  • une étape d'assemblage des différentes couches 2, 3 et 4 de l'opercule flexible par vulcanisation.
We now present, in general, a method of manufacturing a flexible seal 1 as described above. This manufacturing process includes, in particular, the following steps:
  • a step of placing the fabric of the main layer 2 from impregnated yarns;
  • a step of placing the fabric of the auxiliary layer or layers 3, 4, with a fixing using seams 13, 14 on the fabric of the main layer 2; and
  • a step of assembling the different layers 2, 3 and 4 of the flexible cover by vulcanization.

On précise également le fonctionnement de l'opercule flexible 1. Lors de la génération d'une poussée pour ouvrir l'opercule flexible 1 fermant le conteneur, en vue d'un tir d'un missile installé dans le conteneur, à partir d'une certaine pression (par exemple 5 bars), l'opercule flexible 1 (et plus particulièrement la pièce composite 8 et le cas échéant également le revêtement antifriction 11) se déchire selon les lignes de fragilisation 5, et les pétales 6 flexibles ainsi libérées se courbent vers l'extérieur pour ouvrir l'opercule flexible 1 et libérer le passage pour le missile. Après la sortie du missile du conteneur, les pétales 6 flexibles reviennent, grâce à leur flexibilité, vers une position initiale pour que l'opercule flexible 1 soit proche de sa position avant l'ouverture afin de permettre la fermeture de la porte de l'alvéole.The operation of the flexible cover 1 is also specified. When generating a push to open the flexible cover 1 closing the container, with a view to firing a missile installed in the container, from a certain pressure (for example 5 bars), the flexible cover 1 (and more particularly the composite part 8 and, where appropriate, also the anti-friction coating 11) tears along the lines of weakness 5, and the flexible petals 6 thus released bend outward to open the flexible seal 1 and free the passage for the missile. After the missile leaves the container, the flexible petals 6 return, thanks to their flexibility, to an initial position so that the flexible seal 1 is close to its position before opening in order to allow the door to be closed. alveolus.

Comme représenté sur la figure 6, plusieurs éléments 16 (ou brides), par exemple en acier inoxydable, en particulier quatre éléments 16 en forme d'équerre, permettent de brider l'opercule flexible 1 sur le conteneur (non représenté).As shown in the figure 6 , several elements 16 (or flanges), for example made of stainless steel, in particular four elements 16 in the form of a square, make it possible to clamp the flexible seal 1 on the container (not shown).

Une application possible de l'invention concerne un conteneur d'un lanceur de missiles, qui est embarqué sur un navire. Un tel conteneur comporte généralement une série d'alvéoles, chaque alvéole étant destinée à recevoir un missile placé dans son conteneur. La partie supérieure d'une alvéole débouche au niveau du pont du navire et est fermée, en dehors des phases de lancement, par une porte. La partie inférieure d'une alvéole comporte une ouverture de communication débouchant dans une chambre destinée à recevoir les gaz émis lors du lancement d'un missile. Les parties supérieure et inférieure de chaque conteneur sont obturées de manière étanche, par un couvercle muni d'un opercule flexible haut, tel que l'opercule flexible 1 précisé ci-dessus, et par un fond muni, par exemple, également d'un opercule flexible bas tel que l'opercule flexible 1. Le volume intérieur du conteneur est, en général, rempli d'un gaz inerte en surpression par rapport à l'atmosphère. Lors du lancement du missile, une porte de l'alvéole est ouverte, et le missile est mis à feu. Les gaz de propulsion font alors augmenter la pression et la température de manière importante à l'intérieur du conteneur, ce qui perfore l'opercule flexible haut du conteneur (et le cas échéant ouvre l'opercule flexible bas). Après le tir, le ou les opercules flexibles reviennent à peu près dans leur position initiale et la porte de l'alvéole est refermée.One possible application of the invention relates to a container of a missile launcher, which is on board a ship. Such a container generally comprises a series of cells, each cell being intended to receive a missile placed in its container. The upper part of a cell opens out at the level of the ship's deck and is closed, outside the launch phases, by a door. The lower part of a cell has a communication opening opening into a chamber intended to receive the gases emitted during the launching of a missile. The upper and lower parts of each container are sealed, by a cover provided with a high flexible cover, such as the flexible cover 1 specified above, and by a bottom provided, for example, also with a low flexible cover such as flexible cover 1. The interior volume of the container is, in general, filled with an inert gas at overpressure relative to the atmosphere. When the missile is launched, a cell door is opened, and the missile is fired. The propellants then increase the pressure and the temperature significantly inside the container, which punctures the flexible top seal of the container (and if necessary opens the bottom flexible seal). After firing, the flexible cover (s) return roughly to their initial position and the cell door is closed.

Claims (12)

  1. Flexible cover, intended to be mounted on a missile container and able to be pushed open, said cover comprising:
    - a layer (2) referred to as the main layer, made of a composite material (9) consisting of at least one woven and of at least one elastomer; and
    - at least one layer (3, 4) referred to as an auxiliary layer, made of a composite material (10) also consisting of at least one woven and of at least one elastomer, said auxiliary layer (3, 4) being secured to said main layer (2), on one of the faces (2A, 2B) of the latter, said auxiliary layer (3, 4) comprising petal-shaped regions (6) that are separated from one another by lines (5) referred to as weakening lines, said main layer (2) and said at least one auxiliary layer (3, 4) forming a composite part (8),
    characterised in that said at least one auxiliary layer (3, 4) is linked to said main layer (2) by stitches (13, 14) and in that at least some (13) of said stitches are arranged along the weakening lines (5).
  2. Flexible cover according to claim 1,
    characterised in that it comprises two auxiliary layers (3, 4) arranged on either side of the main layer (2).
  3. Flexible cover according to claim 2,
    characterised in that the two auxiliary layers (3, 4) are arranged, with their petal-shaped regions (6), symmetrically, with respect to a substantially central plane (P) of the main layer (2).
  4. Flexible cover according to any one of the preceding claims, characterised in that the stitches are made using threads which correspond to the threads of the wovens used to form said composite materials (9, 10).
  5. Flexible cover according to any one of the preceding claims, characterised in that at least some (14) of said stitches are arranged transversally to said weakening lines (5).
  6. Flexible cover according to one of the preceding claims, characterised in that the stitches are provided over the entire surface of the petal-shaped regions (6).
  7. Flexible cover according to one of the preceding claims, characterised in that the petal-shaped regions (6) are arranged in such a way that the weakening lines (5) are radially oriented in relation to the centre (12) of the flexible cover (1).
  8. Flexible cover according to any one of the preceding claims, characterised in that the composite material (10) forming said at least one auxiliary layer (3, 4) is identical to the composite material (9) forming the main layer (2).
  9. Flexible cover according to one of the preceding claims, characterised in that the weakening lines (5) are filled with elastomer.
  10. Flexible cover according to one of the preceding claims, characterised in that it comprises an antifriction coating (11) on a face referred to as the inner face (1A) intended to be placed towards the inside of the container.
  11. Missile container,
    characterised in that it comprises at least one flexible cover (1) according to one of claims 1 to 10.
  12. Weapons system,
    characterised in that it comprises at least one missile container according to claim 11.
EP17290081.3A 2016-07-01 2017-06-20 Flexible seal for missile container Active EP3264021B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1601043A FR3053455B1 (en) 2016-07-01 2016-07-01 FLEXIBLE OPENER FOR MISSILE CONTAINER

Publications (2)

Publication Number Publication Date
EP3264021A1 EP3264021A1 (en) 2018-01-03
EP3264021B1 true EP3264021B1 (en) 2020-06-17

Family

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Application Number Title Priority Date Filing Date
EP17290081.3A Active EP3264021B1 (en) 2016-07-01 2017-06-20 Flexible seal for missile container

Country Status (5)

Country Link
US (1) US10845159B2 (en)
EP (1) EP3264021B1 (en)
ES (1) ES2805656T3 (en)
FR (1) FR3053455B1 (en)
WO (1) WO2018002454A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112066797B (en) * 2020-08-31 2022-11-25 湖北三江航天万峰科技发展有限公司 Frangible cover and forming method thereof
CN113819802B (en) * 2021-09-06 2022-10-21 南京航空航天大学 Composite material frangible cover with automatic reset function and preparation method thereof

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Publication number Priority date Publication date Assignee Title
FR1263011A (en) * 1960-07-21 1961-06-05 Dunlop Rubber Co Protective casing for projectiles
US4498368A (en) * 1983-10-06 1985-02-12 The United States Of America As Representedby The Secretary Of The Navy Frangible fly through diaphragm for missile launch canister
US5198280A (en) * 1990-10-25 1993-03-30 Allied-Signal Inc. Three dimensional fiber structures having improved penetration resistance
US5677029A (en) * 1990-11-19 1997-10-14 Alliedsignal Inc. Ballistic resistant fabric articles
US7520204B2 (en) * 2004-10-28 2009-04-21 Lockheed Martin Corporation Article comprising a composite cover
EP2060867B1 (en) * 2007-11-14 2011-01-19 Saab Ab Launch tube protective cover
FR2926360B1 (en) * 2008-01-11 2012-10-19 Dcns DEFORMABLE REAR OPERATOR FOR MISSILE CONTAINER, COMPRISING A FRONT SUPPORT FRAME
KR101222459B1 (en) * 2010-07-19 2013-01-15 국방과학연구소 Front cover for launching tube of missile and method for fabricating the same
US8883661B2 (en) * 2011-11-18 2014-11-11 Pro-Systems S.P.A. Composite material for ballistic protection and relative method of preparation

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Title
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Also Published As

Publication number Publication date
US20190323799A1 (en) 2019-10-24
FR3053455A1 (en) 2018-01-05
FR3053455B1 (en) 2019-04-19
ES2805656T3 (en) 2021-02-15
EP3264021A1 (en) 2018-01-03
US10845159B2 (en) 2020-11-24
WO2018002454A1 (en) 2018-01-04

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