EP3376153A1 - Ballistic protection device for observation means - Google Patents

Ballistic protection device for observation means Download PDF

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Publication number
EP3376153A1
EP3376153A1 EP18161621.0A EP18161621A EP3376153A1 EP 3376153 A1 EP3376153 A1 EP 3376153A1 EP 18161621 A EP18161621 A EP 18161621A EP 3376153 A1 EP3376153 A1 EP 3376153A1
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EP
European Patent Office
Prior art keywords
cover
window
covers
bearing
bearing axis
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Granted
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EP18161621.0A
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German (de)
French (fr)
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EP3376153B1 (en
Inventor
Aymeric Peloux
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Nexter Systems SA
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Nexter Systems SA
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41HARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00Armour; Armour plates
    • F41H5/26Peepholes; Windows; Loopholes
    • F41H5/266Periscopes for fighting or armoured vehicles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41HARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00Armour; Armour plates
    • F41H5/06Shields
    • F41H5/18Rotating shields

Definitions

  • the technical field of the invention is that of protection devices for observation means.
  • a 360 degree rotating 360-degree periscopic observation means may comprise a shielded cowling which covers it and which is coaxial with the observation means.
  • the cowling comprises a window located opposite an optical observation means.
  • the cowling and the observation means are mechanically coupled in the bearing so that, when the observation means pivots in position, the cowling also pivots so that the window is always facing the optics.
  • Such a protective device constituted by the cowling and its window must have a window opening with a surface greater than the surface of the optic to allow observations in elevation.
  • the patent RU2584362 discloses a ballistic protection device having first and second coaxial revolution hoods and each having a plurality of grooves oriented in different directions for each hood.
  • the grooves rotate continuously in opposite directions to provide ballistic protection but do not allow to provide a permanent observation window for an optical.
  • the invention proposes to solve this problem of vulnerability by reducing the opening of the window to the necessary minimum, namely the surface of the optics and this for all positions in the field or in the location of the axis of the optics.
  • the invention also makes it possible to hide the opening of the window without it being necessary to provide a shutter or a part dedicated solely to this function.
  • the invention relates to a ballistic protection device orientable about a bearing axis and intended to cover at least one pivotable periscopic observation means around the same bearing axis, protection device characterized in that it comprises a first and a second cover each having a form of revolution, form for placing the first cover under the second to rotate each of the covers relative to each other about the bearing axis, the first and the second bonnet being rotated respectively by a first and second drive means, each having a sensor for knowing the position of each of the hoods in position, the first and the second bonnet respectively comprising first and second grooves oriented obliquely by relative to the bearing axis, the first and second grooves being oriented in different directions so that a zone of superposition of the grooves forms an observation window through the two covers, the window whose position is controlled by means of a control device to be placed opposite an optical observation means, the position of the window on the device being variable as a function of the angular position of the covers relative to the bearing axis.
  • the covers have a cylindrical shape and have their groove on the side of the cylinder thus allowing a variation of the position of the observation window both in the deposit and in the site.
  • the first and second grooves are inclined by 45 degrees relative to the bearing axis.
  • control device can simultaneously rotate the first cover and the second cover in opposite directions and both at the same angle to vary only the position of the window.
  • control device can simultaneously rotate the first cover and the second cover of the same angular value in the same direction to vary only the position in the bearing of the window.
  • control device can compose angular position variations of the first cover with respect to the angular position of the second cover and the absolute positions of the two covers relative to the bearing axis to simultaneously vary the position in site and in the field. from the window.
  • an armored combat vehicle 100 has on its roof an observation means (observation means visible to the figure 2 ) protected by a ballistic protection device 1 which is orientable in bearing around a substantially vertical axis 2 which is also the bearing axis of the observation means 4.
  • the protection device 1 comprises a first cover 3 intended to be placed on the observation means 4, coaxially with the bearing axis 2 of this observation means 4.
  • a second cover 5 covers the first cover 3 also coaxially 2.
  • the first and the second hoods 3 and 5 comprise forms of revolution, in this case substantially cylindrical shapes, in order to be able to rotate relative to one another.
  • each cover 3 and 5 comprises a drive means 11 comprising a ring gear 12 circular meshing with a pinion 14 of a motor 13 fixed to the vehicle 100 in order to rotate each cover 3 and 5 around the bearing axis 2.
  • Each motor 13 comprises an encoder (non-visible encoder) making it possible to know the position in the bearing of each of the covers 3 and 5.
  • first and second covers 3 and 5 respectively comprise a first groove 6 (for the first cover 3) and a second groove 7 (for the second cover 5) which are inclined relative to the bearing axis 2.
  • the first groove 6 is oriented at an angle ⁇ by relative to the bearing axis 2.
  • the second groove 7 is oriented by an angle ⁇ with respect to the bearing axis 2. The angle ⁇ is different from the angle ⁇ of inclination of the second groove 7.
  • the first groove 6 is oriented at a first angle ⁇ of 45 degrees with respect to the axis 2 while the second groove 7 is oriented by a second angle ⁇ of -45 degrees with respect to this axis 2.
  • first and second grooves 6 and 7 are orthogonal to each other.
  • an open observation window 8 is obtained in the superposition zone of the grooves 6 and 7.
  • this observation window 8 will be positioned opposite an optical 9 of the observation means 4 thus enabling an operator (operator not shown) to observe the environment of the vehicle (vehicle visible to the figure 1 ).
  • the position in the site and in the bearing of the window 8 is slaved to the position in the bearing and to the inclination of the optics 9 by means of a control device adapted to follow a control process such that: To vary the single position in the window 8 site, without changing its position in the field, is rotated simultaneously the first cover 3 and the second cover 5 in opposite directions and both of the same angle ⁇ .
  • the optic 9 of the observation means 4 is oriented in a conventional manner to modify the inclination in site of its axis of sight.
  • the optic 9 of the observation means 4 does not pivot in the bearing, only the covers 3 and 5 pivot.
  • the observation means 4 is in a conventional manner already provided with sensors making it possible to determine the positions in the S-site and in the G-spot of the axis of its optics 9. As described above, sensors will also be provided, for example incremental encoders associated with the motors (not shown) making it possible to know the angular positions in the bearing of each cap 3 and 5.
  • the orientation reference values in S-site and G-bearing of the axis of optics 9 to control the relative positionings in the bearing of the two covers 3 and 5 (positions which are also measured by the appropriate sensors) so as to match the window 8 with the position of the optics 9 both in site and in the field.
  • angles ⁇ 1 and ⁇ 2 are determined by an algorithm from the values of the site angles S and deposit G of the axis of the optics 9. These angles also depend on the geometric characteristics of the grooves 6 and 7 of the covers 3 and 5, in particular their inclinations ⁇ and ⁇ with respect to the bearing axis 2.
  • each intermediate value between ⁇ 1 and ⁇ 2 can be associated with a particular angle of elevation.
  • angles ⁇ 1 and ⁇ 2 will also take into account the difference between the initial position of the covers and the median position described above.
  • the zone devoid of ballistic protection is very small since it is limited to a window 8 permanently facing the optics 9 during the observation phases.
  • the width of each groove 6 and 7 is substantially equivalent to the diagonal of the optic 9.
  • the invention it is also possible to completely protect the optics 9 by removing the window 8. For this, simply rotate the first cover 3 relative to the second cover 5 by an angle such that the grooves 6 and 7 do not have an overlay area.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

L'invention porte sur un dispositif de protection balistique (1) orientable autour d'un axe de gisement (2) recouvrant un moyen d'observation (4) pivotable autour du même axe. Le dispositif comporte un premier et un second capot (3,5) ayant chacun une forme de révolution permettant de placer le premier capot (3) sous le second (5) pour pouvoir faire tourner chacun des capots (3,5) l'un par rapport à l'autre. Le premier (3) et le second (5) capots sont entraînés en rotation par un premier et un second moyen d'entraînement et comportent respectivement une première et une seconde rainures (6,7) orientées obliquement par rapport à l'axe de gisement (2) dans des directions différentes de manière telle qu'une zone de superposition des rainures forme une fenêtre (8) d'observation au travers des deux capots. La fenêtre a une position variable en site et en gisement en fonction de la position angulaire des capots.

Figure imgaf001
The invention relates to a ballistic protection device (1) orientable around a bearing axis (2) covering an observation means (4) pivotable about the same axis. The device comprises a first and a second cover (3,5) each having a shape of revolution for placing the first cover (3) under the second (5) to be able to rotate each of the covers (3,5) one compared to each other. The first (3) and the second (5) covers are rotated by a first and a second driving means and respectively comprise first and second grooves (6, 7) oriented obliquely with respect to the bearing axis. (2) in different directions such that a superposition area of the grooves forms a window (8) observation through the two covers. The window has a position that varies in location and location depending on the angular position of the hoods.
Figure imgaf001

Description

Le domaine technique de l'invention est celui des dispositifs de protection pour moyens d'observation.The technical field of the invention is that of protection devices for observation means.

Les véhicules de combat sont équipés de moyens d'observation périscopiques qui sont, de par la mission du véhicule, exposés à des tirs susceptibles de les détruire. Pour remédier à cela, il est connu de protéger les moyens d'observation par un blindage.Combat vehicles are equipped with periscopic means of observation which are, by the mission of the vehicle, exposed to shots likely to destroy them. To remedy this, it is known to protect the observation means by a shield.

Comme le montre le brevet FR2509034 , un moyen d'observation périscopique apte à pivoter en gisement sur 360 degrés peut comporter un capotage blindé qui le recouvre et qui est coaxial au moyen d'observation. Le capotage comporte une fenêtre située en regard d'une optique du moyen d'observation. Le capotage et le moyen d'observation sont mécaniquement couplés en gisement de manière à ce que, lorsque le moyen d'observation pivote en gisement, le capotage pivote également pour que la fenêtre soit toujours en regard de l'optique.As the patent shows FR2509034 a 360 degree rotating 360-degree periscopic observation means may comprise a shielded cowling which covers it and which is coaxial with the observation means. The cowling comprises a window located opposite an optical observation means. The cowling and the observation means are mechanically coupled in the bearing so that, when the observation means pivots in position, the cowling also pivots so that the window is always facing the optics.

Cependant un tel dispositif de protection constitué par le capotage et sa fenêtre doivent comporter une ouverture de fenêtre de surface supérieure à la surface de l'optique afin de permettre des observations en élévation.However, such a protective device constituted by the cowling and its window must have a window opening with a surface greater than the surface of the optic to allow observations in elevation.

Plus le besoin d'observation en élévation est important, plus l'ouverture de la fenêtre doit être importante ce qui augmente la vulnérabilité balistique du dispositif, l'ouverture de la fenêtre étant une zone non protégée ce qui fait de cette ouverture une cible privilégiée pour des tireurs ennemis.The greater the need for observation in elevation, the greater the opening of the window which increases the ballistic vulnerability of the device, the opening of the window being an unprotected area which makes this opening a preferred target for enemy shooters.

Le brevet RU2584362 décrit un dispositif de protection balistique comportant un premier et un second capot de révolution coaxiaux et comportant chacun une pluralité de rainures orientées dans des directions différentes pour chaque capot. Les rainures tournent en permanence dans des directions opposées pour fournir une protection balistique mais ne permettent pas d'offrir une fenêtre d'observation permanente pour une optique.The patent RU2584362 discloses a ballistic protection device having first and second coaxial revolution hoods and each having a plurality of grooves oriented in different directions for each hood. The grooves rotate continuously in opposite directions to provide ballistic protection but do not allow to provide a permanent observation window for an optical.

L'invention propose de résoudre ce problème de vulnérabilité en réduisant l'ouverture de la fenêtre au strict nécessaire, à savoir la surface de l'optique et ceci pour toutes positions en gisement ou en site de l'axe de l'optique.The invention proposes to solve this problem of vulnerability by reducing the opening of the window to the necessary minimum, namely the surface of the optics and this for all positions in the field or in the location of the axis of the optics.

Selon un mode de réalisation, l'invention permet également d'occulter l'ouverture de la fenêtre sans qu'il soit nécessaire de prévoir un volet ou une pièce dédiée uniquement à cette fonction.According to one embodiment, the invention also makes it possible to hide the opening of the window without it being necessary to provide a shutter or a part dedicated solely to this function.

L'invention porte sur un dispositif de protection balistique orientable autour d'un axe de gisement et destiné à recouvrir au moins un moyen d'observation périscopique pivotable autour du même axe de gisement, dispositif de protection caractérisé en ce qu'il comporte un premier et un second capot ayant chacun une forme de révolution, forme permettant de placer le premier capot sous le second pour pouvoir faire tourner chacun des capots l'un par rapport à l'autre autour de l'axe de gisement, le premier et le second capot étant entraînés en rotation respectivement par un premier et un second moyen d'entraînement, comportant chacun un capteur permettant de connaître la position en gisement de chacun des capots, le premier et le second capot comportant respectivement une première et une seconde rainures orientées obliquement par rapport à l'axe de gisement, les première et seconde rainures étant orientées dans des directions différentes de manière telle qu'une zone de superposition des rainures forme une fenêtre d'observation au travers des deux capots, fenêtre dont la position est asservie au moyen d'un dispositif de pilotage pour être placée en regard d'une optique du moyen d'observation, la position de la fenêtre sur le dispositif étant variable en fonction de la position angulaire des capots par rapport à l'axe de gisement.The invention relates to a ballistic protection device orientable about a bearing axis and intended to cover at least one pivotable periscopic observation means around the same bearing axis, protection device characterized in that it comprises a first and a second cover each having a form of revolution, form for placing the first cover under the second to rotate each of the covers relative to each other about the bearing axis, the first and the second bonnet being rotated respectively by a first and second drive means, each having a sensor for knowing the position of each of the hoods in position, the first and the second bonnet respectively comprising first and second grooves oriented obliquely by relative to the bearing axis, the first and second grooves being oriented in different directions so that a zone of superposition of the grooves forms an observation window through the two covers, the window whose position is controlled by means of a control device to be placed opposite an optical observation means, the position of the window on the device being variable as a function of the angular position of the covers relative to the bearing axis.

Avantageusement, les capots ont une forme cylindrique et comportent leur rainure sur le flanc du cylindre permettant ainsi une variation de la position de la fenêtre d'observation tant en gisement qu'en site.Advantageously, the covers have a cylindrical shape and have their groove on the side of the cylinder thus allowing a variation of the position of the observation window both in the deposit and in the site.

Avantageusement, la première et la seconde rainures sont inclinées de 45 degrés par rapport à l'axe de gisement.Advantageously, the first and second grooves are inclined by 45 degrees relative to the bearing axis.

Avantageusement, le dispositif de pilotage pourra faire tourner simultanément le premier capot et le second capot dans des directions opposées et tous les deux d'un même angle pour varier uniquement la position en site de la fenêtre.Advantageously, the control device can simultaneously rotate the first cover and the second cover in opposite directions and both at the same angle to vary only the position of the window.

Avantageusement, le dispositif de pilotage pourra faire tourner simultanément le premier capot et le second capot d'une même valeur angulaire dans la même direction pour varier uniquement la position en gisement de la fenêtre.Advantageously, the control device can simultaneously rotate the first cover and the second cover of the same angular value in the same direction to vary only the position in the bearing of the window.

Avantageusement, le dispositif de pilotage pourra composer des variations angulaires de position du premier capot par rapport à la position angulaire du second capot et les positions absolues des deux capots par rapport à l'axe de gisement pour varier simultanément la position en site et en gisement de la fenêtre.Advantageously, the control device can compose angular position variations of the first cover with respect to the angular position of the second cover and the absolute positions of the two covers relative to the bearing axis to simultaneously vary the position in site and in the field. from the window.

L'invention sera mieux comprise à la lecture de la description suivante, description faite en référence aux dessins en annexe, dessins dans lesquels :

  • La figure 1 représente une vue de trois quarts d'un véhicule de combat équipé d'un dispositif selon l'invention.
  • La figure 2 représente une vue éclatée d'un dispositif selon l'invention.
  • La figure 3 représente une vue de trois quarts d'un dispositif selon l'invention selon une première configuration.
  • La figure 4 représente une vue de trois quarts d'un dispositif selon l'invention selon une seconde configuration.
  • La figure 5 représente une vue de trois quarts d'un dispositif selon l'invention selon une troisième orientation.
  • La figure 6 représente une vue éclatée d'un dispositif selon un second mode de réalisation.
  • La figure 7 représente une vue de détail en coupe d'un dispositif selon l'invention.
The invention will be better understood on reading the following description, description made with reference to the appended drawings, drawings in which:
  • The figure 1 represents a three-quarter view of a combat vehicle equipped with a device according to the invention.
  • The figure 2 represents an exploded view of a device according to the invention.
  • The figure 3 represents a three-quarter view of a device according to the invention according to a first configuration.
  • The figure 4 represents a three-quarter view of a device according to the invention according to a second configuration.
  • The figure 5 represents a three-quarter view of a device according to the invention in a third orientation.
  • The figure 6 represents an exploded view of a device according to a second embodiment.
  • The figure 7 represents a detail view in section of a device according to the invention.

Selon la figure 1, un véhicule blindé de combat 100 comporte sur son toit un moyen d'observation (moyen d'observation visible à la figure 2) protégé par un dispositif de protection balistique 1 qui est orientable en gisement autour d'un axe sensiblement vertical 2 qui est aussi l'axe de gisement du moyen d'observation 4.According to figure 1 , an armored combat vehicle 100 has on its roof an observation means (observation means visible to the figure 2 ) protected by a ballistic protection device 1 which is orientable in bearing around a substantially vertical axis 2 which is also the bearing axis of the observation means 4.

Selon la figure 2, le dispositif de protection 1 comporte un premier capot 3 destiné à être placé sur le moyen d'observation 4, coaxialement à l'axe de gisement 2 de ce moyen d'observation 4. Un second capot 5 recouvre le premier capot 3 également coaxialement à l'axe de gisement 2. Le premier et le second capot 3 et 5 comportent des formes de révolution, en l'espèce des formes sensiblement cylindriques, afin de pouvoir tourner relativement l'un à l'autre.According to figure 2 , the protection device 1 comprises a first cover 3 intended to be placed on the observation means 4, coaxially with the bearing axis 2 of this observation means 4. A second cover 5 covers the first cover 3 also coaxially 2. The first and the second hoods 3 and 5 comprise forms of revolution, in this case substantially cylindrical shapes, in order to be able to rotate relative to one another.

Comme visible à la figure 7, chaque capot 3 et 5 comporte un moyen d'entraînement 11 comportant une couronne dentée 12 circulaire engrenant avec un pignon 14 d'un moteur 13 fixé au véhicule 100 afin de pouvoir faire tourner chaque capot 3 et 5 autour de l'axe de gisement 2. Chaque moteur 13 comporte un codeur (codeur non visible) permettant de connaitre la position en gisement de chacun des capots 3 et 5.As visible at figure 7 , each cover 3 and 5 comprises a drive means 11 comprising a ring gear 12 circular meshing with a pinion 14 of a motor 13 fixed to the vehicle 100 in order to rotate each cover 3 and 5 around the bearing axis 2. Each motor 13 comprises an encoder (non-visible encoder) making it possible to know the position in the bearing of each of the covers 3 and 5.

On notera que le premier et le second capot 3 et 5 comportent respectivement une première rainure 6 (pour le premier capot 3) et une seconde rainure 7 (pour le second capot 5) qui sont inclinées relativement à l'axe de gisement 2. La première rainure 6 est orientée selon un angle α par rapport à l'axe de gisement 2. La seconde rainure 7 est orientée d'un angle β par rapport à l'axe de gisement 2. L'angle α est différent de l'angle β d'inclinaison de la seconde rainure 7.It should be noted that the first and second covers 3 and 5 respectively comprise a first groove 6 (for the first cover 3) and a second groove 7 (for the second cover 5) which are inclined relative to the bearing axis 2. The first groove 6 is oriented at an angle α by relative to the bearing axis 2. The second groove 7 is oriented by an angle β with respect to the bearing axis 2. The angle α is different from the angle β of inclination of the second groove 7.

Selon un mode de réalisation préféré, la première rainure 6 est orientée d'un premier angle α de 45 degrés par rapport à l'axe 2 alors que la seconde rainure 7 est orientée d'un second angle β de - 45 degrés par rapport à cet axe 2.According to a preferred embodiment, the first groove 6 is oriented at a first angle α of 45 degrees with respect to the axis 2 while the second groove 7 is oriented by a second angle β of -45 degrees with respect to this axis 2.

Ainsi, la première et la seconde rainures 6 et 7 sont orthogonales l'une à l'autre.Thus, the first and second grooves 6 and 7 are orthogonal to each other.

Selon la figure 3, une fenêtre d'observation 8 ouverte est obtenue dans la zone de superposition des rainures 6 et 7. Par une commande appropriée des moyens d'entraînement de chaque capot, cette fenêtre d'observation 8 sera positionnée en regard d'une optique 9 du moyen d'observation 4 permettant ainsi à un opérateur (opérateur non représenté) d'observer l'environnement du véhicule (véhicule visible à la figure 1).According to figure 3 , an open observation window 8 is obtained in the superposition zone of the grooves 6 and 7. By appropriate control of the drive means of each cover, this observation window 8 will be positioned opposite an optical 9 of the observation means 4 thus enabling an operator (operator not shown) to observe the environment of the vehicle (vehicle visible to the figure 1 ).

Selon la figure 4, la position en site et en gisement de la fenêtre 8 est asservie sur la position en gisement et sur l'inclinaison en site de l'optique 9 au moyen d'un dispositif de pilotage apte à suivre un processus de pilotage tel que :
Pour faire varier la seule position en site de la fenêtre 8, sans modifier sa position en gisement, on fait tourner simultanément le premier capot 3 et le second capot 5 dans des directions opposées et tous les deux d'un même angle Φ. Dans ce cas, l'optique 9 du moyen d'observation 4 est orientée de façon classique pour modifier l'inclinaison en site de son axe de visée. L'optique 9 du moyen d'observation 4 ne pivote pas en gisement, seuls les capots 3 et 5 pivotent.
According to figure 4 , the position in the site and in the bearing of the window 8 is slaved to the position in the bearing and to the inclination of the optics 9 by means of a control device adapted to follow a control process such that:
To vary the single position in the window 8 site, without changing its position in the field, is rotated simultaneously the first cover 3 and the second cover 5 in opposite directions and both of the same angle Φ. In this case, the optic 9 of the observation means 4 is oriented in a conventional manner to modify the inclination in site of its axis of sight. The optic 9 of the observation means 4 does not pivot in the bearing, only the covers 3 and 5 pivot.

Selon la figure 5, pour faire varier la seule position en gisement de la fenêtre 8 sans modifier son positionnement en site, on fait tourner simultanément des capots 3 et 5 d'une même valeur angulaire Φ dans la même direction. Dans le même temps bien entendu, le moyen d'observation 4 pivotera en gisement de la même valeur d'angle Φ pour suivre la fenêtre 8 comme illustré à la figure 5.According to figure 5 in order to vary the only position in the bearing of the window 8 without modifying its positioning in the site, coils 3 and 5 of a same angular value Φ in the same direction. At the same time, of course, the observation means 4 will pivot in bearing of the same angle value Φ to follow the window 8 as shown in FIG. figure 5 .

Pour obtenir toutes les autres positions en site et en gisement de la fenêtre 8, on composera des variations angulaires de position du premier capot 3 par rapport à la position angulaire du second capot 5 et les positions absolues des deux capots par rapport à l'axe de gisement 2.To obtain all the other positions in the site and in the bearing of the window 8, angular variations of position of the first cover 3 with respect to the angular position of the second cover 5 and the absolute positions of the two covers with respect to the axis will be composed. deposit 2.

Le moyen d'observation 4 est d'une façon classique déjà doté de capteurs permettant de déterminer les positions en site S et en gisement G de l'axe de son optique 9. Comme décrit précédemment, on prévoira par ailleurs des capteurs par exemple des codeurs incrémentaux associés aux moteurs (non représentés) permettant de connaître les positions angulaires en gisement de chaque capot 3 et 5.The observation means 4 is in a conventional manner already provided with sensors making it possible to determine the positions in the S-site and in the G-spot of the axis of its optics 9. As described above, sensors will also be provided, for example incremental encoders associated with the motors (not shown) making it possible to know the angular positions in the bearing of each cap 3 and 5.

Il sera aisé d'utiliser dans un algorithme approprié les valeurs de consigne d'orientation en site S et gisement G de l'axe de l'optique 9 pour commander les positionnements relatifs en gisement des deux capots 3 et 5 (positions qui sont aussi mesurées par les capteurs appropriés) de façon à faire correspondre la fenêtre 8 avec la position de l'optique 9 à la fois en site et en gisement.It will be easy to use, in an appropriate algorithm, the orientation reference values in S-site and G-bearing of the axis of optics 9 to control the relative positionings in the bearing of the two covers 3 and 5 (positions which are also measured by the appropriate sensors) so as to match the window 8 with the position of the optics 9 both in site and in the field.

Un exemple de procédé permettant de modifier la position en gisement et en site de la fenêtre afin qu'elle reste en face de l'axe de l'optique 9 pourra se composer donc des étapes suivantes qui seront exécutées simultanément :

  • acquérir en continu par les capteurs du moyen d'observation 4 la variation de position des angles de gisement G et de site S de l'axe de l'optique 9 ;
  • simultanément, faire pivoter le premier capot 3 d'un angle Φ1 et faire pivoter le second capot 5 d'un angle Φ2.
An example of a method making it possible to modify the position in the field and in the site of the window so that it remains opposite the axis of the optics 9 may therefore consist of the following steps which will be executed simultaneously:
  • continuously acquiring by the sensors of the observation means 4 the variation of position of the bearing angles G and of the site S of the axis of the optics 9;
  • simultaneously, rotate the first cover 3 by an angle Φ 1 and rotate the second cover 5 by an angle Φ 2.

Les angles Φ1 et Φ2 sont déterminés par un algorithme à partir des valeurs des angles de site S et de gisement G de l'axe de l'optique 9. Ces angles dépendent également des caractéristiques géométriques des rainures 6 et 7 des capots 3 et 5, en particulier de leurs inclinaisons α et β par rapport à l'axe de gisement 2.The angles Φ 1 and Φ 2 are determined by an algorithm from the values of the site angles S and deposit G of the axis of the optics 9. These angles also depend on the geometric characteristics of the grooves 6 and 7 of the covers 3 and 5, in particular their inclinations α and β with respect to the bearing axis 2.

Concrètement par rapport à une position initiale qui est une position médiane et dans laquelle les capots sont positionnés avec la fenêtre 8 en regard de la ligne de visée de l'optique 9 positionnée à l'horizontale (figure 3), le premier capot pivotera d'un angle Φ1 qui sera égal à l'angle de gisement G souhaité -δ (Φ1=G-δ) et le deuxième capot pivotera d'un angle Φ2 qui sera égal à G+δ, l'écart 2δ entre Φ1 et Φ2 correspond à l'angle permettant de donner, pour la géométrie de capot considérée, l'angle de site S souhaité pour le positionnement du centre de la fenêtre d'observation 8.Concretely with respect to an initial position which is a median position and in which the covers are positioned with the window 8 facing the line of sight of the optic 9 positioned horizontally ( figure 3 ), the first cover will pivot by an angle Φ 1 which will be equal to the desired bearing angle G -δ ( Φ 1 = G-δ) and the second cover will pivot by an angle Φ 2 which will be equal to G + δ, the difference 2δ between Φ 1 and Φ 2 corresponds to the angle making it possible to give, for the hood geometry considered, the angle of elevation S desired for the positioning of the center of the observation window 8.

Il existe en effet, pour chaque forme et inclinaison des rainures 6 et 7, une valeur δ1 pour laquelle le positionnement des capots place la fenêtre 8 à sa position la plus haute (site maximal).In fact, for each shape and inclination of the grooves 6 and 7, there exists a value δ1 for which the positioning of the covers places the window 8 at its highest position (maximum site).

Inversement il existe aussi une valeur δ2 pour laquelle le positionnement des capots place la fenêtre 8 à sa position la plus basse (site minimal). Et chaque valeur intermédiaire entre δ1 et δ2 peut être associée à un angle de site particulier.Conversely, there is also a value δ2 for which the positioning of the covers places the window 8 at its lowest position (minimum site). And each intermediate value between δ1 and δ2 can be associated with a particular angle of elevation.

Les corrélations entre les valeurs de δ et celles de l'angle de site S pour la ligne de visée sont donc mise en place dans une mémoire (par exemple sous la forme d'un etable) et permettent à un calculateur de commande du positionnement des capots, pour une consigne de site S donnée, de savoir quelle valeur de δ il doit donner à l'écart entre Φ1, Φ2 et la consigne de gisement G.The correlations between the values of δ and those of the angle of elevation S for the line of sight are therefore put in place in a memory (for example in the form of a stable) and allow a control computer to position the covers, for a given site S set, know what δ value it must give to the difference between Φ 1, Φ 2 and G. deposit setpoint

Il est bien entendu que les angles Φ1 et Φ2 tiendront également compte de l'écart entre la position initiale des capots et la position médiane décrite précédemment.It is understood that the angles Φ1 and Φ2 will also take into account the difference between the initial position of the covers and the median position described above.

Il est ainsi aisé pour l'Homme du Métier de déterminer une loi de commande permettant d'avoir un déplacement de la fenêtre 8 correspondant au déplacement de l'optique 9 afin de maintenir la fenêtre 8 en face de l'optique en mettant en oeuvre les moyens 11 d'entraînement des capots.It is thus easy for a person skilled in the art to determine a control law making it possible to have a displacement of the window 8 corresponding to the displacement of the optics 9 in order to maintain the window 8 in front of the optics by implementing the means 11 for driving the covers.

On notera que la zone dépourvue de protection balistique est très réduite puisque se limitant à une fenêtre 8 située en permanence en regard de l'optique 9 durant les phases d'observation. Dans le cas de figure représenté, afin de réduire la zone dépourvue de protection au maximum, la largeur de chaque rainure 6 et 7 est sensiblement équivalente à la diagonale de l'optique 9.It will be noted that the zone devoid of ballistic protection is very small since it is limited to a window 8 permanently facing the optics 9 during the observation phases. In the case shown, in order to reduce the area devoid of protection to the maximum, the width of each groove 6 and 7 is substantially equivalent to the diagonal of the optic 9.

Grâce à l'invention, il est également possible de protéger totalement l'optique 9 en faisant disparaître la fenêtre 8. Pour cela, il suffit de faire tourner le premier capot 3 relativement au second capot 5 d'un angle tel que les rainures 6 et 7 ne présentent pas de zone de superposition.Thanks to the invention, it is also possible to completely protect the optics 9 by removing the window 8. For this, simply rotate the first cover 3 relative to the second cover 5 by an angle such that the grooves 6 and 7 do not have an overlay area.

Claims (6)

Dispositif de protection balistique (1) orientable autour d'un axe de gisement (2) et destiné à recouvrir au moins un moyen d'observation (4) périscopique pivotable autour du même axe de gisement (2), dispositif de protection (1) caractérisé en ce qu'il comporte un premier et un second capot (3,5) ayant chacun une forme de révolution, forme permettant de placer le premier capot (3) sous le second (5) pour pouvoir faire tourner chacun des capots (3,5) l'un par rapport à l'autre autour de l'axe de gisement (2), le premier (3) et le second (5) capots étant entraînés en rotation respectivement par un premier et un second moyen (11) d'entraînement, comportant chacun un capteur permettant de connaître la position en gisement de chacun des capots, le premier et le second capot (3,5) comportant respectivement une première et une seconde (6,7) rainures orientées obliquement par rapport à l'axe de gisement (2), les première et seconde rainures (6,7) étant orientées dans des directions différentes de manière telle qu'une zone de superposition des rainures forme une fenêtre (8) d'observation au travers des deux capots (3,5), fenêtre (8) dont la position est asservie au moyen d'un dispositif de pilotage pour être placée en regard d'une optique (9) du moyen d'observation (4), la position de la fenêtre (8) sur le dispositif (1) étant variable en fonction de la position angulaire des capots par rapport à l'axe de gisement (2).Ballistic protection device (1) orientable around a bearing axis (2) and intended to cover at least one observation means (4) periscopic pivotable about the same bearing axis (2), protection device (1) characterized in that it comprises a first and a second cover (3, 5) each having a shape of revolution, a shape making it possible to place the first cover (3) under the second (5) in order to rotate each of the covers (3). , 5) relative to one another about the bearing axis (2), the first (3) and the second (5) covers being rotated respectively by first and second means (11) each having a sensor making it possible to know the bearing position of each of the covers, the first and second covers (3,5) respectively comprising a first and a second (6,7) grooves oriented obliquely with respect to the the bearing axis (2), the first and second grooves (6,7) being oriented in di different rections in such a way that a superposition zone of the grooves forms a window (8) for observation through the two covers (3,5), window (8) whose position is controlled by means of a control device to be placed facing an optic (9) of the observation means (4), the position of the window (8) on the device (1) being variable depending on the angular position of the covers relative to the bearing axis (2). Dispositif de protection (1) selon la revendication 1, caractérisé en ce que les capots (3,5) ont une forme cylindrique et comportent leur rainure (6,7) sur le flanc du cylindre permettant ainsi une variation de la position de la fenêtre d'observation (8) tant en gisement qu'en site.Protective device (1) according to claim 1, characterized in that the covers (3,5) have a cylindrical shape and have their groove (6,7) on the side of the cylinder thus allowing a variation of the position of the window observation (8) in both deposit and site. Dispositif de protection (1) selon une des revendications précédentes, caractérisé en ce que la première et la seconde rainures (6,7) sont inclinées de 45 degrés par rapport à l'axe de gisement (2).Protective device (1) according to one of the preceding claims, characterized in that the first and the second grooves (6, 7) are inclined by 45 degrees with respect to the bearing axis (2). Dispositif de protection balistique selon l'une des revendications 1 à 3, caractérisé en ce que le dispositif de pilotage fait tourner simultanément le premier capot (3) et le second capot (5) dans des directions opposées et tous les deux d'un même angle pour varier uniquement la position en site de la fenêtre (8).Ballistic protection device according to one of claims 1 to 3, characterized in that the control device simultaneously rotates the first cover (3) and the second cover (5) in opposite directions and both of the same angle to vary only the position in site of the window (8). Dispositif de protection balistique selon l'une des revendications 1 à 3, caractérisé en ce que le dispositif de pilotage fait tourner simultanément le premier capot (3) et le second capot (5) d'une même valeur angulaire dans la même direction pour varier uniquement la position en gisement de la fenêtre (8).Ballistic protection device according to one of claims 1 to 3, characterized in that the control device simultaneously rotates the first cover (3) and the second cover (5) of the same angular value in the same direction to vary only the bearing position of the window (8). Dispositif de protection balistique selon l'une des revendications 1 à 3, caractérisé en ce que le dispositif de pilotage compose des variations angulaires de position du premier capot (3) par rapport à la position angulaire du second capot (5) et les positions absolues des deux capots par rapport à l'axe de gisement (2) pour varier simultanément la position en site et en gisement de la fenêtre (8).Ballistic protection device according to one of claims 1 to 3, characterized in that the control device composes angular position variations of the first cover (3) relative to the angular position of the second cover (5) and the absolute positions. two covers relative to the bearing axis (2) to simultaneously vary the position in the site and in the bearing of the window (8).
EP18161621.0A 2017-03-16 2018-03-13 Ballistic protection device for observation means Active EP3376153B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1700281A FR3064055B1 (en) 2017-03-16 2017-03-16 BALLISTIC PROTECTION DEVICE FOR MEANS OF OBSERVATION

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EP3376153A1 true EP3376153A1 (en) 2018-09-19
EP3376153B1 EP3376153B1 (en) 2019-10-02

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FR (1) FR3064055B1 (en)

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Also Published As

Publication number Publication date
ES2760448T3 (en) 2020-05-14
FR3064055B1 (en) 2021-07-30
FR3064055A1 (en) 2018-09-21
EP3376153B1 (en) 2019-10-02

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