EP3460379B1 - Device for protecting an air inlet or outlet screen of a platform against liquids - Google Patents

Device for protecting an air inlet or outlet screen of a platform against liquids Download PDF

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Publication number
EP3460379B1
EP3460379B1 EP18190974.8A EP18190974A EP3460379B1 EP 3460379 B1 EP3460379 B1 EP 3460379B1 EP 18190974 A EP18190974 A EP 18190974A EP 3460379 B1 EP3460379 B1 EP 3460379B1
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EP
European Patent Office
Prior art keywords
frame
protecting
air inlet
panel
flexible
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EP18190974.8A
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German (de)
French (fr)
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EP3460379A1 (en
Inventor
Olivier Germenot
Guillaume Rigault
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Nexter Systems SA
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Nexter Systems SA
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Priority to PL18190974T priority Critical patent/PL3460379T3/en
Publication of EP3460379A1 publication Critical patent/EP3460379A1/en
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Publication of EP3460379B1 publication Critical patent/EP3460379B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H7/00—Armoured or armed vehicles
    • F41H7/02—Land vehicles with enclosing armour, e.g. tanks
    • F41H7/03—Air-pressurised compartments for crew; Means for preventing admission of noxious substances, e.g. combustion gas from gun barrels, in crew compartments; Sealing arrangements
    • F41H7/035—Gratings for ventilation openings

Definitions

  • the technical field of the invention is that of devices for protecting an air inlet or outlet grille, in particular a grille fitted to an armored vehicle.
  • Such a device has the drawback of reducing the passage reserved for air. If this is acceptable in most cases for air inlets, this is insufficient for air outlets because the reduction in air outlet section greatly reduces the performance of the motorization.
  • the device according to the invention can also find application to protect the air inlets or outlets of fixed platforms, for example inlets or outlets of air conditioning or ventilation.
  • the subject of the invention is a device for protecting an air inlet or outlet grille of a platform, such as a vehicle, against splashing liquids, device characterized in that it comprises at least one frame surrounding the grid and forming a bowl, frame comprising an upper rim situated above the plane of the grid, frame above which is positioned a flexible structure comprising a flexible non-flammable or flame-retardant panel which is fixed to the frame and s 'extends from a first side of the frame to a second side of the frame parallel to the first side, panel which is positioned in the deployed position above the grid and at a distance therefrom, panel delimiting two lateral openings allowing the passage of the air.
  • each opening may be partially closed at its base by a strip which will extend above a third, or respectively fourth, side of the frame.
  • the flexible panel has a width at its top which is less than its width at the level of the frame, so that, in the deployed position, the lateral openings appear situated at the level of inclined lateral planes.
  • each opening may comprise, arranged above the strip, a grid secured to the flexible panel.
  • the device may include an elastic frame which will maintain the panel in the deployed position.
  • the elastic reinforcement may comprise at least two arches, each of which will be fixed at the edge of an opening, as well as at least one flexible rod arranged between the arches.
  • the elastic reinforcement may comprise at least two crossed arches each extending from one edge of an opening to the edge of the other opening.
  • a platform 1 which is here an armored vehicle 1 comprises a body 2 on which is fixed a turret 3 carrying a weapon tube 4.
  • the turret 3 can rotate relative to the body 2 about an axis 5.
  • Box 2 houses an engine (not shown) which is connected to the outside by air intake and exhaust pipes.
  • An air exhaust grid 6 is shown in dotted lines at the figure 1 .
  • This grid 6 is covered by a protection device 7 according to the invention.
  • This protection device 7 is seen more fully by also considering the figures 2, 3 and 4a .
  • This frame is rigid. It can be made of metal, for example aluminum alloy.
  • the frame has a height such that its upper edge 8a is located above the plane of the grid 6.
  • the frame 8 thus delimits or forms a bowl 8b which is substantially rectangular and which will have a depth of the order of ten millimeters.
  • the grid 6 is therefore at the bottom of this bowl 8b which surrounds it completely.
  • the rigidity of the frame 8 makes it possible to protect the grid 6 from the direct impacts of improvised projectiles such as Molotov cocktails.
  • the periphery of the frame 8 may be inclined to facilitate the flow and evacuation of the liquids projected onto the protection device 6.
  • a flexible structure 9 is positioned above the frame 8.
  • This structure comprises at least one flexible panel 9a which is fixed to the frame 8 and which extends from a first side 8 1 of the frame to a second side 8 2 of the frame which is parallel to the first side 8 1 ( figure 3 ).
  • the flexible panel 9a may be made of a flexible plastic material such as polyvinyl chloride (PVC), or even of a waterproof synthetic fabric, or a sheet of fiberglass or carbon, or finally of synthetic or natural rubber.
  • PVC polyvinyl chloride
  • This panel will be made in one material which is non-flammable or which has received a protective treatment making it non-flammable or hardly flammable (fireproofing treatment).
  • the flexible panel 9a will be fixed to the frame 8 for example by screwed bars, secured to the first and second sides 8 1 and 8 2 (bars not shown).
  • the flexible panel 9a is positioned in the deployed position above the grid 6 and at a distance therefrom. As seen in Figures 1 and 3 , the panel 9a delimits with the frame 8 two lateral openings 10 (here at an elliptical periphery) which allow the passage of air.
  • each opening 10 may be partially closed at its base by a strip 11 which extends above a third 8 3 , or respectively a fourth 8 4 , on the side of the frame 8.
  • the strips 11 can be made of the same material as the flexible panel 9a and will be non-flammable (flame retardant). They will also be fixed to the frame 8 by screwed bars (not shown) and they will be made integral with the panel 9a by waterproof heat seals.
  • the openings 10 comprise a grid 12 which is disposed above the strip 11.
  • These grids 12 will be made of a flexible and resistant material, for example of an aramid synthetic fiber having received a treatment capable of rendering it non-flammable (flame retardant).
  • the grids 12 will be made integral with the panel 9a by bonding or heat welding. Alternatively the grids 12 could be formed by a part of the panel 9a, for example by making the panel 9a with a frame constituting the grids 12 and by covering this frame with cut plates forming the waterproof panel 9a.
  • the grids 12 make it possible to protect the openings against the penetration of an incendiary device. They do not obstruct the air outlet.
  • the flexible panel 9a also has a width L1 at its top which is less than its width L2 at the frame 8 ( figure 4a ).
  • the lateral openings 10 appear situated at the level of inclined lateral planes 13a and 13b.
  • Such an arrangement makes it possible to increase the surface of the openings 10 which improves the circulation of air. It also facilitates the folding of the device 7 during the passage of the tube 4 of the weapon as described below.
  • the air which is evacuated by the grid 6 is sufficient to "inflate" the flexible structure 9 which then extends above the grid 6 from the start of the motorization.
  • Such an arrangement is useful for example when the protection device 7 is positioned above an air intake grille. It is also useful for ensuring a minimum amount of air conducive to the proper flow of incendiary fluids in the event of ventilation failure.
  • the figure 5 shows a top view of such an embodiment.
  • the elastic frame 14 here comprises two hoops 14a and 14b, each of which is fixed at the edge of an opening 10.
  • the hoops 14a and 14b are for example made in the form of flat rods or rods, made of fiberglass or of flexible and elastic plastic material.
  • the arches will be made integral with the panel 9a, for example by housing them in gussets sewn along the edges of the openings 10.
  • the elastic frame 14 is completed by at least one flexible rod or rod 15 connecting the arches 14a and 14b.
  • the rod 15 will also be made of fiberglass or flexible plastic. It can be fixed to the arches 14a and 14b for example by metal jumpers 16 crimped on the rods or by joints. We can more simply arrange the rod or flexible rod 15 in gussets sewn on the panel 9a.
  • the elements of the armature 14 will be dimensioned so as to allow the deformation of the flexible structure 9 when the barrel 4 of the weapon passes over the grid 6.
  • the figure 6 shows a top view of another embodiment of a flexible structure 9 provided with an elastic frame 14.
  • the elastic frame 14 here comprises two arches 14a and 14b. Each hoop extends from one edge of an opening 10 to the edge of the other opening 10. The hoops 14a and 14b thus intersect substantially in the middle of the panel 9a.
  • arches 14a and 14b may be made in the form of flat rods or rods, fiberglass or flexible and elastic plastic.
  • the arches will be made integral with the panel 9a for example by housing them in gussets sewn along the diagonals of the panel 9a.
  • the figures 4a to 4d illustrate the behavior of the protection device 7 when the barrel 4 of the weapon passes over the grid 6.
  • the tube 4 can deform the latter ( Figures 4b and 4c ) which offers only a weak resistance.
  • the presence of the inclined lateral planes 13a and 13b at the level of the openings 10 facilitates the folding of the structure 9 without hooking by the tube and without tearing.
  • the structure 9 is equipped with an elastic frame 14 which ensures the maintenance of the panel 9a in the deployed position (mode more particularly adapted to the installation of the device on a grid 6 of the air intake type), the flexibility of the frame 14 authorizes the deformation of the device 7 and the passage of the tube 4 of the weapon.
  • the invention has been described in its application to the protection of air inlets or outlets of a vehicle. It could of course be implemented for the protection of the air inlets or outlets of a fixed platform possibly equipped with an armed turret.
  • the invention more particularly ensures the protection of air inlets and outlets against projections of flaming liquids (Molotov cocktails). It also protects these air inlets or outlets against projections of other liquids such as toxic or corrosive liquids.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Body Structure For Vehicles (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Description

Le domaine technique de l'invention est celui des dispositifs de protection d'une grille d'entrée ou de sortie d'air, en particulier d'une grille équipant un véhicule blindé.The technical field of the invention is that of devices for protecting an air inlet or outlet grille, in particular a grille fitted to an armored vehicle.

Il est connu du brevet EP2182317 un dispositif de protection pour une grille d'entrée d'air de véhicule, vis-à-vis de la projection d'engins incendiaires tels que les cocktails Molotov. Ce dispositif comprend un volet assurant la couverture de l'entrée d'air et disposé à distance de l'entrée d'air, et des moyens permettant d'empêcher l'écoulement d'un fluide enflammé ou inflammable vers l'entrée d'air.It is known from the patent EP2182317 a protective device for a vehicle air intake grille, against the projection of incendiary devices such as Molotov cocktails. This device comprises a flap ensuring the cover of the air inlet and placed at a distance from the air inlet, and means making it possible to prevent the flow of an ignited or flammable fluid towards the inlet of air.

Un tel dispositif présente comme inconvénient de réduire le passage réservé à l'air. Si ceci est acceptable dans la plupart des cas pour les entrées d'air, cela est insuffisant pour les sorties d'air car la réduction de section de sortie d'air réduit fortement les performances de la motorisation.Such a device has the drawback of reducing the passage reserved for air. If this is acceptable in most cases for air inlets, this is insufficient for air outlets because the reduction in air outlet section greatly reduces the performance of the motorization.

Par ailleurs si on cherche à accroître la section de passage d'air avec les solutions décrites par le brevet EP2182317 , on est conduit à définir un moyen de protection encombrant qui peut dans certains cas gêner le débattement d'une arme portée par une tourelle.Furthermore, if we seek to increase the air passage section with the solutions described by the patent EP2182317 , we are led to define a bulky protection means which can in certain cases hinder the movement of a weapon carried by a turret.

Le dispositif selon l'invention peut également trouver application pour protéger des entrées ou sorties d'air de plateformes fixes, par exemple des entrées ou sorties d'air de climatisation ou de ventilation.The device according to the invention can also find application to protect the air inlets or outlets of fixed platforms, for example inlets or outlets of air conditioning or ventilation.

C'est le but de l'invention que de résoudre de tels problèmes en proposant un dispositif de protection assurant tout à la fois une section de passage d'air importante et une protection efficace.It is the object of the invention to solve such problems by proposing a protection device ensuring both a large air passage section and effective protection.

C'est un autre but de l'invention que de proposer un dispositif de protection ne gênant pas le débattement angulaire d'une tourelle portant une arme à proximité du dispositif.It is another object of the invention to provide a protection device that does not interfere with the angular movement of a turret carrying a weapon near the device.

Ainsi l'invention a pour objet un dispositif de protection d'une grille d'entrée ou de sortie d'air d'une plateforme, telle qu'un véhicule, contre les projections de liquides, dispositif caractérisé en ce qu'il comprend au moins un cadre entourant la grille et formant une cuvette, cadre comprenant un rebord supérieur situé au-dessus du plan de la grille, cadre au-dessus duquel est positionnée une structure souple comprenant un panneau souple ininflammable ou ignifugé qui est fixé au cadre et s'étend d'un premier côté du cadre à un second côté du cadre parallèle au premier côté, panneau qui est positionné en position déployée au-dessus de la grille et à distance de celle-ci, panneau délimitant deux ouvertures latérales permettant le passage de l'air.Thus the subject of the invention is a device for protecting an air inlet or outlet grille of a platform, such as a vehicle, against splashing liquids, device characterized in that it comprises at least one frame surrounding the grid and forming a bowl, frame comprising an upper rim situated above the plane of the grid, frame above which is positioned a flexible structure comprising a flexible non-flammable or flame-retardant panel which is fixed to the frame and s 'extends from a first side of the frame to a second side of the frame parallel to the first side, panel which is positioned in the deployed position above the grid and at a distance therefrom, panel delimiting two lateral openings allowing the passage of the air.

Selon un mode particulier de réalisation, chaque ouverture pourra être partiellement obturée à sa base par une bande qui s'étendra au-dessus d'un troisième, ou respectivement quatrième, côté du cadre.According to a particular embodiment, each opening may be partially closed at its base by a strip which will extend above a third, or respectively fourth, side of the frame.

Avantageusement, le panneau souple a une largeur au niveau de son sommet qui est inférieure à sa largeur au niveau du cadre, de telle sorte que, en position déployée, les ouvertures latérales apparaissent situées au niveau de plans latéraux inclinés.Advantageously, the flexible panel has a width at its top which is less than its width at the level of the frame, so that, in the deployed position, the lateral openings appear situated at the level of inclined lateral planes.

Selon un mode particulier de réalisation, chaque ouverture pourra comporter, disposée au-dessus de la bande, une grille solidaire du panneau souple.According to a particular embodiment, each opening may comprise, arranged above the strip, a grid secured to the flexible panel.

Selon un mode particulier de réalisation, le dispositif pourra comporter une armature élastique qui assurera le maintien du panneau en position déployée.According to a particular embodiment, the device may include an elastic frame which will maintain the panel in the deployed position.

L'armature élastique pourra comporter au moins deux arceaux dont chacun sera fixé au niveau du bord d'une ouverture, ainsi qu'au moins une baguette souple disposée entre les arceaux.The elastic reinforcement may comprise at least two arches, each of which will be fixed at the edge of an opening, as well as at least one flexible rod arranged between the arches.

Selon un autre mode de réalisation, l'armature élastique pourra comporter au moins deux arceaux croisés s'étendant chacun d'un bord d'une ouverture au bord de l'autre ouverture.According to another embodiment, the elastic reinforcement may comprise at least two crossed arches each extending from one edge of an opening to the edge of the other opening.

L'invention sera mieux comprise à la lecture de la description qui va suivre de différents modes de réalisation, description faite en référence aux dessins annexés et dans lesquels :

  • La figure 1 est une vue latérale schématique d'une partie avant d'un véhicule équipé d'un dispositif de protection selon un mode de réalisation de l'invention ;
  • La figure 2 est une vue de dessus d'une grille de sortie d'air entourée par le cadre du dispositif selon l'invention, le panneau souple étant retiré ;
  • La figure 3 est une vue de dessus d'une grille de sortie d'air équipée du dispositif selon un mode de réalisation de l'invention ;
  • Les figures 4a, 4b, 4c et 4d montrent en vue de face le dispositif selon l'invention lors de différentes étapes successives de passage d'un tube d'arme ;
  • La figure 5 est une vue de dessus d'une grille de sortie d'air équipée du dispositif selon un autre mode de réalisation de l'invention ;
  • La figure 6 est une vue de dessus d'une grille de sortie d'air équipée du dispositif selon un autre mode de réalisation de l'invention.
The invention will be better understood on reading the description which follows of different embodiments, description made with reference to the appended drawings and in which:
  • The figure 1 is a schematic side view of a front part of a vehicle equipped with a protection device according to an embodiment of the invention;
  • The figure 2 is a top view of an air outlet grille surrounded by the frame of the device according to the invention, the flexible panel being removed;
  • The figure 3 is a top view of an air outlet grille equipped with the device according to an embodiment of the invention;
  • The Figures 4a, 4b, 4c and 4d show in front view the device according to the invention during different successive stages of passage of a weapon tube;
  • The figure 5 is a top view of an air outlet grille equipped with the device according to another embodiment of the invention;
  • The figure 6 is a top view of an air outlet grille equipped with the device according to another embodiment of the invention.

En se reportant à la figure 1, une plateforme 1 qui est ici un véhicule blindé 1 comporte une caisse 2 sur laquelle est fixée une tourelle 3 portant un tube d'arme 4. La tourelle 3 peut tourner par rapport à la caisse 2 autour d'un axe 5.Referring to the figure 1 , a platform 1 which is here an armored vehicle 1 comprises a body 2 on which is fixed a turret 3 carrying a weapon tube 4. The turret 3 can rotate relative to the body 2 about an axis 5.

La caisse 2 abrite une motorisation (non représentée) qui est reliée à l'extérieur par des tubulures d'admission et d'évacuation d'air. Une grille 6 d'évacuation d'air est représentée en pointillés à la figure 1.Box 2 houses an engine (not shown) which is connected to the outside by air intake and exhaust pipes. An air exhaust grid 6 is shown in dotted lines at the figure 1 .

Cette grille 6 est couverte par un dispositif de protection 7 selon l'invention.This grid 6 is covered by a protection device 7 according to the invention.

Ce dispositif de protection 7 est vu de façon plus complète en considérant aussi les figures 2, 3 et 4a.This protection device 7 is seen more fully by also considering the figures 2, 3 and 4a .

Il comporte tout d'abord un cadre 8 qui entoure la grille 6. Ce cadre est rigide. Il peut être réalisé en métal, par exemple en alliage d'aluminium. Le cadre a une hauteur telle que son rebord supérieur 8a se situe au-dessus du plan de la grille 6. Le cadre 8 délimite ou forme ainsi une cuvette 8b sensiblement rectangulaire qui aura une profondeur de l'ordre de la dizaine de millimètres. La grille 6 se trouve donc au fond de cette cuvette 8b qui l'entoure complètement.It firstly comprises a frame 8 which surrounds the grid 6. This frame is rigid. It can be made of metal, for example aluminum alloy. The frame has a height such that its upper edge 8a is located above the plane of the grid 6. The frame 8 thus delimits or forms a bowl 8b which is substantially rectangular and which will have a depth of the order of ten millimeters. The grid 6 is therefore at the bottom of this bowl 8b which surrounds it completely.

La rigidité du cadre 8 permet de protéger la grille 6 des impacts directs de projectiles improvisés comme les cocktails Molotov. Le pourtour du cadre 8 pourra être incliné pour faciliter l'écoulement et l'évacuation des liquides projetés sur le dispositif de protection 6.The rigidity of the frame 8 makes it possible to protect the grid 6 from the direct impacts of improvised projectiles such as Molotov cocktails. The periphery of the frame 8 may be inclined to facilitate the flow and evacuation of the liquids projected onto the protection device 6.

Conformément à l'invention, une structure souple 9 est positionnée au-dessus du cadre 8. Cette structure comprend au moins un panneau souple 9a qui est fixé au cadre 8 et qui s'étend d'un premier côté 81 du cadre à un second côté 82 du cadre qui est parallèle au premier côté 81 (figure 3).According to the invention, a flexible structure 9 is positioned above the frame 8. This structure comprises at least one flexible panel 9a which is fixed to the frame 8 and which extends from a first side 8 1 of the frame to a second side 8 2 of the frame which is parallel to the first side 8 1 ( figure 3 ).

Le panneau souple 9a pourra être réalisé en une matière plastique souple telle que le chlorure de polyvinyle (PVC), ou encore en un tissu synthétique imperméabilisé, ou une nappe de fibre de verre ou de carbone, ou enfin en caoutchouc synthétique ou naturel. Ce panneau sera réalisé en un matériau ininflammable ou ayant reçu un traitement de protection le rendant ininflammable ou difficilement inflammable (traitement d'ignifugation).The flexible panel 9a may be made of a flexible plastic material such as polyvinyl chloride (PVC), or even of a waterproof synthetic fabric, or a sheet of fiberglass or carbon, or finally of synthetic or natural rubber. This panel will be made in one material which is non-flammable or which has received a protective treatment making it non-flammable or hardly flammable (fireproofing treatment).

Le panneau souple 9a sera fixé au cadre 8 par exemple par des barrettes vissées, solidaires des premier et deuxième côtés 81 et 82 (barrettes non représentées).The flexible panel 9a will be fixed to the frame 8 for example by screwed bars, secured to the first and second sides 8 1 and 8 2 (bars not shown).

Le panneau souple 9a est positionné en position déployée au-dessus de la grille 6 et à distance de celle-ci. Comme on le voit aux figures 1 et 3, le panneau 9a délimite avec le cadre 8 deux ouvertures latérales 10 (ici à pourtour elliptique) qui permettent le passage de l'air.The flexible panel 9a is positioned in the deployed position above the grid 6 and at a distance therefrom. As seen in Figures 1 and 3 , the panel 9a delimits with the frame 8 two lateral openings 10 (here at an elliptical periphery) which allow the passage of air.

Avantageusement, chaque ouverture 10 pourra être partiellement obturée à sa base par une bande 11 qui s'étend au-dessus d'un troisième 83, ou respectivement quatrième 84, côté du cadre 8.Advantageously, each opening 10 may be partially closed at its base by a strip 11 which extends above a third 8 3 , or respectively a fourth 8 4 , on the side of the frame 8.

Une telle disposition complète la protection de la grille 6 contre les risques de ruissellement des liquides inflammables. En effet, si un cocktail Molotov se brise sur le cadre 8, les bandes 11 empêchent l'entrée du liquide dans la cuvette 8b et vers la grille 6.Such an arrangement completes the protection of the grid 6 against the risks of runoff of flammable liquids. Indeed, if a Molotov cocktail breaks on the frame 8, the strips 11 prevent the liquid from entering the bowl 8b and towards the grid 6.

Les bandes 11 pourront être réalisées dans le même matériau que le panneau souple 9a et seront ininflammables (ignifugées). Elles seront, elles aussi, fixées au cadre 8 par des barrettes vissées (non représentées) et elles seront rendues solidaires du panneau 9a par thermo soudures étanches.The strips 11 can be made of the same material as the flexible panel 9a and will be non-flammable (flame retardant). They will also be fixed to the frame 8 by screwed bars (not shown) and they will be made integral with the panel 9a by waterproof heat seals.

Comme on le voit sur les figures 1 et 3, les ouvertures 10 comportent une grille 12 qui est disposée au-dessus de la bande 11. Ces grilles 12 seront réalisées en un matériau souple et résistant par exemple en une fibre synthétique aramide ayant reçu un traitement propre à la rendre ininflammable (ignifugée).As seen on Figures 1 and 3 , the openings 10 comprise a grid 12 which is disposed above the strip 11. These grids 12 will be made of a flexible and resistant material, for example of an aramid synthetic fiber having received a treatment capable of rendering it non-flammable (flame retardant).

Les grilles 12 seront rendues solidaires du panneau 9a par collage ou thermo soudure. Alternativement les grilles 12 pourraient être formées par une partie du panneau 9a, par exemple en réalisant le panneau 9a par une armature constituant les grilles 12 et en recouvrant cette armature par des plaques découpées formant le panneau étanche 9a.The grids 12 will be made integral with the panel 9a by bonding or heat welding. Alternatively the grids 12 could be formed by a part of the panel 9a, for example by making the panel 9a with a frame constituting the grids 12 and by covering this frame with cut plates forming the waterproof panel 9a.

Les grilles 12 permettent de protéger les ouvertures contre la pénétration d'un engin incendiaire. Elles ne gênent pas la sortie de l'air.The grids 12 make it possible to protect the openings against the penetration of an incendiary device. They do not obstruct the air outlet.

Le panneau souple 9a a par ailleurs une largeur L1 au niveau de son sommet qui est inférieure à sa largeur L2 au niveau du cadre 8 (figure 4a).The flexible panel 9a also has a width L1 at its top which is less than its width L2 at the frame 8 ( figure 4a ).

Ainsi, en position déployée du panneau 9a, les ouvertures latérales 10 apparaissent situées au niveau de plans latéraux inclinés 13a et 13b. Une telle disposition permet d'accroître la surface des ouvertures 10 ce qui améliore la circulation de l'air. Elle facilite aussi le repli du dispositif 7 lors du passage du tube 4 de l'arme comme décrit par la suite.Thus, in the deployed position of the panel 9a, the lateral openings 10 appear situated at the level of inclined lateral planes 13a and 13b. Such an arrangement makes it possible to increase the surface of the openings 10 which improves the circulation of air. It also facilitates the folding of the device 7 during the passage of the tube 4 of the weapon as described below.

Du fait de la souplesse du panneau 9a, l'air qui est évacué par la grille 6 suffit à « gonfler » la structure souple 9 qui s'étend alors au-dessus de la grille 6 dès le démarrage de la motorisation.Due to the flexibility of the panel 9a, the air which is evacuated by the grid 6 is sufficient to "inflate" the flexible structure 9 which then extends above the grid 6 from the start of the motorization.

Il peut être souhaitable d'assurer un maintien de la structure souple 9, en position déployée, à distance de la grille 6, même lorsque le moteur est à l'arrêt et que l'air n'est pas évacué au travers de la grille 6.It may be desirable to maintain the flexible structure 9, in the deployed position, away from the grid 6, even when the engine is stopped and the air is not exhausted through the grid. 6.

Une telle disposition est utile par exemple lorsque le dispositif de protection 7 est positionné au-dessus d'une grille d'entrée d'air. Elle est également utile pour assurer un bombé minimum propice au bon écoulement des fluides incendiaires en cas de non fonctionnement de la ventilation.Such an arrangement is useful for example when the protection device 7 is positioned above an air intake grille. It is also useful for ensuring a minimum amount of air conducive to the proper flow of incendiary fluids in the event of ventilation failure.

Il suffit pour assurer ce maintien déployé de doter la structure souple 9 d'une armature élastique 14.It is sufficient to ensure this deployed maintenance to provide the flexible structure 9 with an elastic reinforcement 14.

La figure 5 montre en vue de dessus un tel mode de réalisation. L'armature élastique 14 comporte ici deux arceaux 14a et 14b dont chacun est fixé au niveau du bord d'une ouverture 10. Les arceaux 14a et 14b sont par exemple réalisés sous la forme baguettes planes ou de tiges, en fibre de verre ou en matière plastique souple et élastique. Les arceaux seront rendus solidaires du panneau 9a par exemple en les logeant dans des goussets cousus suivant les bords des ouvertures 10.The figure 5 shows a top view of such an embodiment. The elastic frame 14 here comprises two hoops 14a and 14b, each of which is fixed at the edge of an opening 10. The hoops 14a and 14b are for example made in the form of flat rods or rods, made of fiberglass or of flexible and elastic plastic material. The arches will be made integral with the panel 9a, for example by housing them in gussets sewn along the edges of the openings 10.

L'armature élastique 14 est complétée par au moins une baguette ou tige souple 15 reliant les arceaux 14a et 14b. La baguette 15 sera elle aussi réalisée en fibre de verre ou en matière plastique souple. Elle pourra être fixée aux arceaux 14a et 14b par exemple par des cavaliers métalliques 16 sertis sur les baguettes ou par des articulations. On pourra plus simplement disposer la baguette ou tige souple 15 dans des goussets cousus sur le panneau 9a.The elastic frame 14 is completed by at least one flexible rod or rod 15 connecting the arches 14a and 14b. The rod 15 will also be made of fiberglass or flexible plastic. It can be fixed to the arches 14a and 14b for example by metal jumpers 16 crimped on the rods or by joints. We can more simply arrange the rod or flexible rod 15 in gussets sewn on the panel 9a.

Dans tous les cas les éléments de l'armature 14 seront dimensionnés de façon à permettre la déformation de la structure souple 9 lorsque le tube 4 de l'arme passe au-dessus de la grille 6.In all cases, the elements of the armature 14 will be dimensioned so as to allow the deformation of the flexible structure 9 when the barrel 4 of the weapon passes over the grid 6.

La figure 6 montre en vue de dessus un autre mode de réalisation d'une structure souple 9 dotée d'une armature élastique 14.The figure 6 shows a top view of another embodiment of a flexible structure 9 provided with an elastic frame 14.

L'armature élastique 14 comporte ici deux arceaux 14a et 14b. Chaque arceau s'étend d'un bord d'une ouverture 10 au bord de l'autre ouverture 10. Les arceaux 14a et 14b se croisent ainsi sensiblement au milieu du panneau 9a.The elastic frame 14 here comprises two arches 14a and 14b. Each hoop extends from one edge of an opening 10 to the edge of the other opening 10. The hoops 14a and 14b thus intersect substantially in the middle of the panel 9a.

Là encore les arceaux 14a et 14b pourront être réalisés sous la forme de baguettes planes ou de tiges, en fibre de verre ou en matière plastique souple et élastique. Les arceaux seront rendus solidaires du panneau 9a par exemple en les logeant dans des goussets cousus suivant les diagonales du panneau 9a.Again the arches 14a and 14b may be made in the form of flat rods or rods, fiberglass or flexible and elastic plastic. The arches will be made integral with the panel 9a for example by housing them in gussets sewn along the diagonals of the panel 9a.

Les figures 4a à 4d illustrent le comportement du dispositif de protection 7 lorsque le tube 4 de l'arme passe au-dessus de la grille 6.The figures 4a to 4d illustrate the behavior of the protection device 7 when the barrel 4 of the weapon passes over the grid 6.

Du fait de la souplesse de la structure 9, le tube 4 peut déformer cette dernière (figures 4b et 4c) qui ne lui oppose qu'une faible résistance. La présence des plans latéraux inclinés 13a et 13b au niveau des ouvertures 10 facilite le repli de la structure 9 sans accrochage par le tube et sans déchirure.Due to the flexibility of the structure 9, the tube 4 can deform the latter ( Figures 4b and 4c ) which offers only a weak resistance. The presence of the inclined lateral planes 13a and 13b at the level of the openings 10 facilitates the folding of the structure 9 without hooking by the tube and without tearing.

Après passage du tube (figure 4d) la structure 9 reprend sa forme initiale, aidée par le souffle de l'air évacué par la grille 6.After passage of the tube ( figure 4d ) the structure 9 returns to its initial shape, helped by the breath of the air evacuated by the grid 6.

Lorsque la structure 9 est équipée d'une armature élastique 14 qui assure le maintien du panneau 9a en position déployée (mode plus particulièrement adapté à la mise en place du dispositif sur une grille 6 de type entrée d'air), la souplesse de l'armature 14 autorise la déformation du dispositif 7 et le passage du tube 4 de l'arme.When the structure 9 is equipped with an elastic frame 14 which ensures the maintenance of the panel 9a in the deployed position (mode more particularly adapted to the installation of the device on a grid 6 of the air intake type), the flexibility of the frame 14 authorizes the deformation of the device 7 and the passage of the tube 4 of the weapon.

L'invention a été décrite dans son application à la protection des entrées ou sorties d'air d'un véhicule. Elle pourrait bien entendu être mise en œuvre pour la protection des entrées ou sorties d'air d'une plateforme fixe éventuellement dotée d'une tourelle armée.The invention has been described in its application to the protection of air inlets or outlets of a vehicle. It could of course be implemented for the protection of the air inlets or outlets of a fixed platform possibly equipped with an armed turret.

L'invention assure plus particulièrement la protection des entrées et sorties d'air contre les projections de liquides enflammés (cocktails Molotov). Elle protège également ces entrées ou sorties d'air contre les projections d'autres liquides tels que les liquides toxiques ou corrosifs.The invention more particularly ensures the protection of air inlets and outlets against projections of flaming liquids (Molotov cocktails). It also protects these air inlets or outlets against projections of other liquids such as toxic or corrosive liquids.

Claims (7)

  1. A device (7) for protecting an air inlet or outlet screen (6) of a platform, such as a vehicle, against projections of liquids, the device comprising at least one frame (8) surrounding the screen (6) and forming a depression (8b), the frame comprising an upper rim located above the plane of the screen (6), characterised in that above the frame, a flexible structure (9) is positioned comprising a nonflammable or flame-proofed flexible panel (9a) that is fastened to the frame (8) and extends from a first side (81) of the frame to a second side (82) of the frame that is parallel to the first side (81), this panel being positioned in a position deployed above the screen (6) and at a distance therefrom, the panel delimiting two side openings (10) allowing the passage of air.
  2. The device for protecting an air inlet or outlet screen according to claim 1, characterised in that each opening (10) is partially closed off at its base by a strip (11) that extends above a third (83), or respectively fourth (84), side of the frame (8).
  3. The device for protecting an air inlet or outlet screen according to claim 2, characterised in that the flexible panel (9a) has a width (L1) at its apex that is smaller than its width (L2) at the frame (8), such that, in the deployed position, the side openings (10) appear to be located at inclined side planes (13a,13b).
  4. The device for protecting an air inlet or outlet screen according to claim 3, characterised in that each opening (10) includes, positioned above the strip (11), a screen (12) secured to the flexible panel (9a).
  5. The device for protecting an air inlet or outlet screen according to one of claims 1 to 4, characterised in that it includes a resilient armature (14) that keeps the panel (9a) in the deployed position.
  6. The device for protecting an air inlet or outlet screen according to claim 5, characterised in that the resilient armature (14) includes at least two arches (14a,14b), each of which is fastened at the edge of an opening, as well as at least one flexible rod (15) positioned between the arches (14a,14b).
  7. The device for protecting an air inlet or outlet screen according to claim 5, characterised in that the resilient armature (14) includes at least two crossed arches (14a,14b) each extending from an edge of one opening to the edge of the other opening.
EP18190974.8A 2017-09-26 2018-08-27 Device for protecting an air inlet or outlet screen of a platform against liquids Active EP3460379B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18190974T PL3460379T3 (en) 2017-09-26 2018-08-27 Device for protecting an air inlet or outlet screen of a platform against liquids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1701013A FR3071598B1 (en) 2017-09-26 2017-09-26 PROTECTION DEVICE FOR AN AIR INLET OR OUTLET GRILLE OF A PLATFORM AGAINST LIQUID SPRAY

Publications (2)

Publication Number Publication Date
EP3460379A1 EP3460379A1 (en) 2019-03-27
EP3460379B1 true EP3460379B1 (en) 2020-07-01

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Application Number Title Priority Date Filing Date
EP18190974.8A Active EP3460379B1 (en) 2017-09-26 2018-08-27 Device for protecting an air inlet or outlet screen of a platform against liquids

Country Status (5)

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EP (1) EP3460379B1 (en)
DK (1) DK3460379T3 (en)
ES (1) ES2811524T3 (en)
FR (1) FR3071598B1 (en)
PL (1) PL3460379T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3119014B1 (en) 2021-01-20 2024-02-16 Nexter Systems Device for protecting an air inlet or outlet grille

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7205393U (en) * 1972-02-12 1977-03-17 Krauss-Maffei Ag, 8000 Muenchen DEVICE FOR PROTECTIVE COVERING OF AIR OPENINGS IN ARMORED VEHICLES
DE4228865A1 (en) * 1992-08-29 1994-03-03 Bundesrep Deutschland Fireproof air intake for armoured fighting vehicle - comprises base frame with sidewall forming labyrinth with covering cowl
FR2937557A1 (en) * 2008-10-28 2010-04-30 Nexter Systems DEVICE FOR PROTECTING A VEHICLE AGAINST FLUID PROJECTIONS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2811524T3 (en) 2021-03-12
EP3460379A1 (en) 2019-03-27
FR3071598A1 (en) 2019-03-29
FR3071598B1 (en) 2021-01-08
PL3460379T3 (en) 2020-09-21
DK3460379T3 (en) 2020-09-07

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