EP1950522A1 - Decoy launch device for aircraft - Google Patents

Decoy launch device for aircraft Download PDF

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Publication number
EP1950522A1
EP1950522A1 EP08100549A EP08100549A EP1950522A1 EP 1950522 A1 EP1950522 A1 EP 1950522A1 EP 08100549 A EP08100549 A EP 08100549A EP 08100549 A EP08100549 A EP 08100549A EP 1950522 A1 EP1950522 A1 EP 1950522A1
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EP
European Patent Office
Prior art keywords
aircraft
flaps
housings
baskets
fuselage
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08100549A
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German (de)
French (fr)
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EP1950522B1 (en
Inventor
Guillaume Rosset
Bruno Vignacq
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Dassault Aviation SA
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Dassault Aviation SA
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Publication date
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Publication of EP1950522A1 publication Critical patent/EP1950522A1/en
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Publication of EP1950522B1 publication Critical patent/EP1950522B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
    • F41F5/00—Launching-apparatus for gravity-propelled missiles or projectiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
    • F41F7/00—Launching-apparatus for projecting missiles or projectiles otherwise than from barrels, e.g. using spigots

Definitions

  • the present invention relates to a lure device for aircraft, comprising first and second receiving housings of at least first and second decoy launch baskets respectively, these housings being open to allow ejection, outside the lure. aircraft, lures contained in the first and second baskets respectively.
  • Devices of this type are nowadays commonly embarked on military planes and on certain planes destined to fly in areas where they are likely to be attacked by guided military devices, such as electromagnetic or infrared-guided destruction missiles. for example.
  • the aircraft is then equipped with a radar system designed to detect the occurrence of such a threat and then trigger countermeasures. These are intended to disrupt the operation of the missile guidance system so as to miss its target.
  • One of these countermeasures consists in launching around the aircraft infrared lures containing loads of pyrotechnic products in combustion, able to divert from the aircraft an infrared-guided missile and redirect it to a burning lure. Another is to scatter metallic flakes behind the aircraft to scramble the radar-guided missile receiver.
  • the lures used are commonly packaged in the form of cartridges assembled in baskets, said lance cartridges or lance lures, these baskets being slid into corresponding housings of the launcher device.
  • these baskets and their respective housings are open towards the outside of the aircraft to allow the ejection of the lures contained in the cartridges under the control of the missile detection radar system mentioned above.
  • removable doors close the homes, but only on the ground.
  • the present invention is specifically intended to provide a lure device that does not suffer from any of these disadvantages and is therefore well suited to an installation on such an aircraft.
  • a device launching lures for aircraft comprising at least first and second receiving housings of at least first and second baskets launch lures respectively, these housings being open to permit the ejection, outside the aircraft, lures contained in these first and second baskets respectively, this device being remarkable in that it comprises first and second movable closing shutters of the first and second housings respectively, and means for operating these shutters to selectively control the opening of the housing before the ejection of the decoys.
  • the lures are protected in flight from the severe constraints of the environment. They also eliminate the noise of aerodynamic origin mentioned above as well as the effects on the drag. On the ground, they help to ensure a protection function of people and materials, as will be seen below.
  • the device is designed to be fixed on an aircraft such as an aircraft, for example under the belly of this aircraft. It is then covered with a fairing which is not shown in the figures to improve the readability thereof.
  • the device essentially comprises a frame 1 designed to receive first and second baskets launch lures 2 1 and 2 2 respectively.
  • the baskets 2 1 and 2 2 are received in first and second housings 3 1 and 3 2 respectively, partially delimited by properly cut and folded sheets, as shown.
  • baskets of a known type, are of parallelepipedal shape, complementary to that of the housing which receives them. They are open on a side face, as it appears on the figure 1 for the basket 2 1 . In this figure it appears that compartments 4 1 , 4 2 , ... are delimited in this basket by internal partitions. These compartments of rectangular cross section, elongated parallel to the arrow F 1 , extend over the entire depth of the basket 2 1 to each accommodate a decoy cartridge, also of a known type. As seen above, this cartridge can be pyrotechnic type or metal flake. Means are provided to control its ejection out of the basket, in the direction of arrow F 1 , perpendicular to the axis X of the aircraft.
  • the baskets 2 1 and 2 2 are arranged head to tail in the device according to the invention, so that their bottoms are opposite and each taken in a U-shaped section fitting, 1 , 5 2 respectively. These fittings are joined in a structure 6, or "chair", disposed in the center of the device and secured to the frame 1. Known means contained in these fittings and in the cartridges used to trigger the ejection of these cartridges out of the baskets.
  • the housings 3 1 , 3 2 and the baskets 2 1 , 2 2 respectively they contain are arranged symmetrically with respect to the median plane of symmetry of the aircraft, passing through the X axis. This arrangement makes it possible to eject laterally and simultaneously the cartridges of the aircraft to protect it from the attack of a missile.
  • the device comprises means for closing the housings 3 1 and 3 2 and means for operating these closure means for controlling a synchronized opening of these housings.
  • flaps 7 1 , 7 2 are constituted by flaps 7 1 , 7 2 respectively, represented in FIGS. Figures 1 and 2 in the open position and in the closed position respectively.
  • these flaps 7 1 , 7 2 are attached to one end of a lever arm 8 1 , 8 2 respectively whose other end is articulated on the frame 1, about axes 9 1 , 9 2 respectively.
  • Each of these flaps is in the form of a cylindrical sector axis coincides with the axis of rotation of the lever arm that supports it.
  • the angular aperture of the sector is calculated so that the flaps 7 1 , 7 2 can cover or completely discover windows 10 1 , 10 2 cut in the frame 1 facing the sides of the baskets 2 1 , 2 2 through which the cartridges come out .
  • the means for operating the flaps of the lure device according to the invention comprise a single motor member 11 acting simultaneously on the two flaps.
  • this drive member may be constituted by a cylinder, electric for example.
  • connecting rods 13 1 , 13 2 are articulated at their other end to angular references 15 1 , 15 2 themselves articulated on fittings 16 1 , 16 2 respectively, secured to the frame 1.
  • the angle gear 15 2 is integral with an arm 16 hinged at its free end on the piston 12 of the cylinder 11.
  • a suitable control of this jack thus makes it possible to tilt this return and therefore the flap 7 2 actuated by the operating rod 13 2 , between its open and closed positions represented at Figures 1 and 2 , respectively.
  • a connecting rod 17 mechanically and rigidly couples, that is to say without play, the angle of return 15 1 and 15 2 between which it is mounted, by means of joints 18 1 and 18 2 respectively.
  • This coupling allows the rods 13 1 and 13 2 to rotate synchronously flaps 7 1 and 7 2 .
  • flaps 7 1 and 7 2 pass simultaneously from their closed position to their open position when the cylinder 11 pushes its piston 12 to the extended position.
  • the flaps go from their open position to their closed position.
  • the operation of the device according to the invention is then established as follows.
  • the cylinder 11 is actuated so that the flaps 7 1 and 7 2 pass from their normal position of closure in flight to their open position, to open the windows 10 1 , 10 2 allowing the ejection of decoy cartridges under the control of the radar system.
  • the cylinder is again actuated to return the flaps in their closed position.
  • the cylinder 11 can also be manually operated by the personnel on the ground or by the crew, by means of a remote electric control.
  • the device according to the invention is further equipped with two pairs of proximity sensors (20a, 20b) and (21a, 21b) respectively, cooperating with fixed vanes 22 1 and 22 2 respectively to detect the positions occupied by the arms 8 1 , 8 2 , and therefore those of the flaps 7 1 , 7 2 when they are in their fully open position or in their fully closed position.
  • This set of sensors in a largely redundant number, makes it possible to form a very secure signal, certainly representative of the positions occupied by the two components.
  • the monitoring of these positions is involved in the logical means used to authorize the firing of cartridges. It also intervenes to signal to the crew of the aircraft the safety state of the device launches lures.
  • the flaps are not completely closed while the aircraft is on the ground, the crew is informed by a light controlled by the signal drawn from the information produced by all the sensors of the aircraft. proximity.
  • This non-closure, or incomplete closure reveals all or part of the cartridges for the users of the airport, to the detriment of the necessary discretion that must surround the presence of these on the aircraft, especially when the aircraft ensures civil or commercial transport.
  • this incomplete closure does not ensure the containment of the pyrotechnic charges contained in the cartridges and poses a problem with regard to the safety of the users of the airport. In the event of such a situation, the crew may then ask the airport control personnel to move the aircraft to an isolated parking area.
  • the movable flaps that equip the device according to the invention are further capable of preventing the firing and ejection of a pyrotechnic charge in the case of an untimely shot control lures.
  • some decoys available on the market take the form of a cartridge equipped with a safety mechanism that operates as follows.
  • the cartridge includes an electrically initiated pyrotechnic primer.
  • the initiation of this primer initiates in turn a load of "unloading", or ejection.
  • the entire cartridge is then set in motion by the pressure of the gases released.
  • a slider forming part of the safety mechanism makes it possible to ignite the pyrotechnic charge by the unloading charge when the entire cartridge leaves its housing within a predetermined time, depending on the burning time of the unloading charge.
  • the initiation of the pyrotechnic primer could be triggered accidentally, for example in case of lightning strike of the aircraft while the device according to the invention is safe, on the ground or in flight, the movable flaps being closed. These then prevent the complete ejection of the cartridge outside its housing, the setting in motion of the slider and thus the ignition of the pyrotechnic charge, thus neutralized.
  • the invention is not limited to the embodiment described and shown which has been given only by way of example.
  • aircraft other than aircraft could be equipped with the lure device according to the invention.
  • this device could be integrated inside the fuselage of the aircraft rather than reported on the outer face of this fuselage.
  • the flaps, in the closed position advantageously provide continuity of the coating of the fuselage, so as to have no impact on the drag.
  • the device according to the invention could also be installed, likewise, for example in the wheel fairing, in that of under-wing engine masts or in the drift, etc.

Abstract

The device has two receiving housings (3-1, 3-2) receiving two decoy launch baskets (2-1, 2-2), respectively. The housings are open for permitting ejection of decoys contained in the respective baskets, at the exterior of an aircraft. Two mobile closing flaps (7-1, 7-2) close the respective housings. An operating unit operates the flaps for selectively controlling the opening of the housings before the ejection of the decoys, where the operating unit is constituted by an actuator (11), operating rod (13-1), crank assemblies (15-1, 15-2) and connecting rod (17).

Description

La présente invention est relative à un dispositif lance leurres pour aéronef, comprenant des premier et deuxième logements de réception d'au moins des premier et deuxième paniers lance leurres respectivement, ces logements étant ouverts pour permettre l'éjection, à l'extérieur de l'aéronef, des leurres contenus dans les premier et deuxième paniers respectivement.The present invention relates to a lure device for aircraft, comprising first and second receiving housings of at least first and second decoy launch baskets respectively, these housings being open to allow ejection, outside the lure. aircraft, lures contained in the first and second baskets respectively.

Des dispositifs de ce type sont aujourd'hui couramment embarqués dans des avions militaires et sur certains avions appelés à voler dans des régions où ils sont susceptibles d'être attaqués par des engins militaires guidés, tels que des missiles de destruction à guidage électromagnétique ou infrarouge par exemple.Devices of this type are nowadays commonly embarked on military planes and on certain planes destined to fly in areas where they are likely to be attacked by guided military devices, such as electromagnetic or infrared-guided destruction missiles. for example.

L'avion est alors équipé d'un système radar conçu pour détecter l'occurrence d'une telle menace et pour déclencher alors des contre-mesures. Celles-ci ont pour but de perturber le fonctionnement du système de guidage du missile de manière à lui faire manquer sa cible.The aircraft is then equipped with a radar system designed to detect the occurrence of such a threat and then trigger countermeasures. These are intended to disrupt the operation of the missile guidance system so as to miss its target.

L'une de ces contre-mesures consiste à lancer autour de l'avion des leurres infrarouges contenant des charges de produits pyrotechniques en combustion, propres à détourner de l'avion un missile à guidage infrarouge et à le rediriger vers un leurre en combustion. Une autre consiste à disperser des paillettes métalliques derrière l'avion, afin de brouiller le récepteur de missiles guidés par radar.One of these countermeasures consists in launching around the aircraft infrared lures containing loads of pyrotechnic products in combustion, able to divert from the aircraft an infrared-guided missile and redirect it to a burning lure. Another is to scatter metallic flakes behind the aircraft to scramble the radar-guided missile receiver.

Les leurres utilisés, infrarouges ou à paillettes, sont couramment conditionnés sous forme de cartouches réunies dans des paniers, dits lance cartouches ou lance leurres, ces paniers étant glissés dans des logements correspondants du dispositif lance leurres.The lures used, infrared or flake, are commonly packaged in the form of cartridges assembled in baskets, said lance cartridges or lance lures, these baskets being slid into corresponding housings of the launcher device.

Selon l'état actuel de la technique, ces paniers et leurs logements respectifs sont ouverts vers l'extérieur de l'aéronef pour permettre l'éjection des leurres contenus dans les cartouches sous la commande du système radar de détection de missile évoqué ci-dessus. Dans certaines installations, des portes démontables ferment les logements, mais au sol seulement.According to the current state of the art, these baskets and their respective housings are open towards the outside of the aircraft to allow the ejection of the lures contained in the cartridges under the control of the missile detection radar system mentioned above. . In some installations, removable doors close the homes, but only on the ground.

Cette pratique n'est pas sans inconvénient. En effet, en vol, les cartouches sont alors exposées aux contraintes sévères régnant dans l'environnement de l'avion. En outre l'ouverture vers l'extérieur des paniers peut être à l'origine d'une dégradation de l'aérodynamique et de bruits supplémentaires, du fait des discontinuités introduites par les ouvertures des logements sur la surface extérieure de l'avion. Egalement, lorsque les logements restent ouverts au sol, la sécurité des personnes et des matériels présents dans l'environnement de l'avion vis-à-vis d'un départ intempestif de leurres n'est pas assurée, non plus que la discrétion de la présence d'un dispositif lance leurres sur l'avion. Tous ces inconvénients sont particulièrement inadmissibles lorsqu'un tel dispositif est installé sur un avion civil ou commercial.This practice is not without inconvenience. Indeed, in flight, the cartridges are then exposed to severe constraints prevailing in the environment of the aircraft. In addition, the opening towards the outside of the baskets can be at the origin of a deterioration of the aerodynamics and additional noises, because of the discontinuities introduced by the openings of the housings on the external surface from the plane. Also, when the dwellings remain open on the ground, the safety of the persons and materials present in the environment of the aircraft vis-à-vis an unwanted departure of lures is not assured, nor the discretion of the presence of a device launches lures on the plane. All these disadvantages are particularly inadmissible when such a device is installed on a civil or commercial aircraft.

La présente invention a précisément pour but de fournir un dispositif lance leurres qui ne souffre d'aucun de ces inconvénients et qui est donc bien adapté à une installation sur un tel avion.The present invention is specifically intended to provide a lure device that does not suffer from any of these disadvantages and is therefore well suited to an installation on such an aircraft.

On atteint ce but de l'invention, ainsi que d'autres qui apparaîtront à la lecture de la description qui va suivre, avec un dispositif lance leurres pour aéronef, comprenant au moins des premier et deuxième logements de réception d'au moins des premier et deuxième paniers lance leurres respectivement, ces logements étant ouverts pour permettre l'éjection, à l'extérieur de l'aéronef, des leurres contenus dans ces premier et deuxième paniers respectivement, ce dispositif étant remarquable en ce qu'il comprend des premier et deuxième volets mobiles de fermeture des premier et deuxième logements respectivement, et des moyens de manoeuvre de ces volets pour commander sélectivement l'ouverture des logements avant l'éjection des leurres.This object of the invention is attained, as well as others which will appear on reading the following description, with a device launching lures for aircraft, comprising at least first and second receiving housings of at least first and second baskets launch lures respectively, these housings being open to permit the ejection, outside the aircraft, lures contained in these first and second baskets respectively, this device being remarkable in that it comprises first and second movable closing shutters of the first and second housings respectively, and means for operating these shutters to selectively control the opening of the housing before the ejection of the decoys.

Grâce à ces volets, les leurres sont protégés en vol des contraintes sévères de l'environnement. Ils suppriment aussi les bruits d'origine aérodynamique évoqués plus haut ainsi que les effets sur la traînée. Au sol, ils contribuent à assurer une fonction de protection de personnes et de matériels, comme on le verra plus loin.Thanks to these shutters, the lures are protected in flight from the severe constraints of the environment. They also eliminate the noise of aerodynamic origin mentioned above as well as the effects on the drag. On the ground, they help to ensure a protection function of people and materials, as will be seen below.

Suivant d'autres caractéristiques de la présente invention :

  • les moyens de manoeuvre comprennent un organe moteur unique,
  • l'organe moteur est un vérin,
  • le dispositif comprend un châssis et chaque volet est fixé à une extrémité d'un bras de levier dont l'autre extrémité est articulée sur le châssis, une bielle de manoeuvre du bras étant montée entre celui-ci et un renvoi d'angle également articulé sur le châssis, les renvois d'angle étant rigidement couplés en rotation par une bielle de liaison,
  • le vérin est mécaniquement couplé aux renvois d'angle pour les faire basculer sélectivement entre des première et deuxième positions correspondant aux positions de fermeture et d'ouverture des volets, respectivement,
  • chacun des volets prend la forme d'un secteur cylindrique mobile en rotation autour de son axe, confondu avec l'axe de rotation du bras de levier qui le supporte,
  • le dispositif comprend au moins un capteur de proximité placé au voisinage d'au moins un des volets, pour émettre un signal représentatif de la position des volets.
According to other features of the present invention:
  • the operating means comprise a single drive member,
  • the driving member is a jack,
  • the device comprises a frame and each flap is attached to one end of a lever arm whose other end is hinged to the frame, a rod for maneuvering the arm being mounted between the latter and an equally articulated angle gear on the chassis, the angle references being rigidly coupled in rotation by a connecting rod,
  • the jack is mechanically coupled to the angle gears to tilt them selectively between first and second positions corresponding to the closing and opening positions of the flaps, respectively,
  • each of the flaps takes the form of a cylindrical sector movable in rotation about its axis, coinciding with the axis of rotation of the lever arm which supports it,
  • the device comprises at least one proximity sensor placed in the vicinity of at least one of the flaps, to emit a signal representative of the position of the flaps.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description qui va suivre et à l'examen du dessin annexé, dans lequel :

  • la figure 1 est une vue perspective d'un mode de réalisation préféré du dispositif suivant l'invention, les volets étant dans leur position d'ouverture, et
  • la figure 2 est une vue analogue à celle de la figure 1, les volets étant dans leur position de fermeture.
Other features and advantages of the present invention will appear on reading the description which follows and on examining the appended drawing, in which:
  • the figure 1 is a perspective view of a preferred embodiment of the device according to the invention, the flaps being in their open position, and
  • the figure 2 is a view similar to that of the figure 1 , the flaps being in their closed position.

Suivant un mode de réalisation du dispositif selon la présente invention, celui-ci est conçu pour être fixé sur un aéronef tel qu'un avion, par exemple sous le ventre de cet avion. II est alors recouvert d'un carénage qui n'est pas représenté sur les figures pour améliorer la lisibilité de celles-ci.According to one embodiment of the device according to the present invention, it is designed to be fixed on an aircraft such as an aircraft, for example under the belly of this aircraft. It is then covered with a fairing which is not shown in the figures to improve the readability thereof.

Comme représenté sur la figure 1 du dessin annexé, le dispositif comprend essentiellement un châssis 1 conçu pour recevoir des premier et deuxième paniers lance leurres 21 et 22 respectivement. Les paniers 21 et 22 sont reçus dans des premier et deuxième logements 31 et 32 respectivement, partiellement délimités par des tôles convenablement découpées et pliées, comme représenté.As shown on the figure 1 of the appended drawing, the device essentially comprises a frame 1 designed to receive first and second baskets launch lures 2 1 and 2 2 respectively. The baskets 2 1 and 2 2 are received in first and second housings 3 1 and 3 2 respectively, partially delimited by properly cut and folded sheets, as shown.

Ces paniers, d'un type connu, sont de forme parallélépipédique, complémentaire de celle des logements qui les reçoivent. Ils sont ouverts sur une face latérale, comme cela apparaît sur la figure 1 pour le panier 21. Sur cette figure il apparaît que des compartiments 41, 42, ... sont délimités dans ce panier par des cloisons internes. Ces compartiments de section droite rectangulaire, allongés parallèlement à la flèche F1, s'étendent sur toute la profondeur du panier 21 pour accueillir chacun une cartouche de leurres, également d'un type connu. Comme on l'a vu plus haut, cette cartouche peut être du type pyrotechnique ou à paillettes métalliques. Des moyens sont prévus pour commander son éjection hors du panier, dans le sens de la flèche F1, perpendiculaire à l'axe X de l'avion.These baskets, of a known type, are of parallelepipedal shape, complementary to that of the housing which receives them. They are open on a side face, as it appears on the figure 1 for the basket 2 1 . In this figure it appears that compartments 4 1 , 4 2 , ... are delimited in this basket by internal partitions. These compartments of rectangular cross section, elongated parallel to the arrow F 1 , extend over the entire depth of the basket 2 1 to each accommodate a decoy cartridge, also of a known type. As seen above, this cartridge can be pyrotechnic type or metal flake. Means are provided to control its ejection out of the basket, in the direction of arrow F 1 , perpendicular to the axis X of the aircraft.

II en est de même évidemment pour le panier 22 et pour les cartouches qu'il contient, qui sont éjectées dans le sens de la flèche F2 de sens opposé à celui de la flèche F1.It is the same obviously for the basket 2 2 and for the cartridges it contains, which are ejected in the direction of the arrow F 2 opposite to that of the arrow F 1 .

Les paniers 21 et 22 sont disposés tête-bêche dans le dispositif suivant l'invention, de manière que leurs fonds soient en regard et pris chacun dans une ferrure à section droite en U, 51, 52 respectivement. Ces ferrures sont réunies dans une structure 6, ou "chaise", disposée au centre du dispositif et solidaire du châssis 1. Des moyens connus contenus dans ces ferrures et dans les cartouches permettent de déclencher l'éjection de ces cartouches hors des paniers.The baskets 2 1 and 2 2 are arranged head to tail in the device according to the invention, so that their bottoms are opposite and each taken in a U-shaped section fitting, 1 , 5 2 respectively. These fittings are joined in a structure 6, or "chair", disposed in the center of the device and secured to the frame 1. Known means contained in these fittings and in the cartridges used to trigger the ejection of these cartridges out of the baskets.

Les logements 31, 32 et les paniers 21, 22 respectivement qu'ils contiennent sont disposés symétriquement par rapport au plan de symétrie médian de l'avion, passant par l'axe X. Cette disposition permet d'éjecter latéralement et simultanément les cartouches de l'avion pour le protéger de l'attaque d'un missile.The housings 3 1 , 3 2 and the baskets 2 1 , 2 2 respectively they contain are arranged symmetrically with respect to the median plane of symmetry of the aircraft, passing through the X axis. This arrangement makes it possible to eject laterally and simultaneously the cartridges of the aircraft to protect it from the attack of a missile.

Suivant une caractéristique du dispositif selon la présente invention, celui-ci comprend des moyens de fermeture des logements 31 et 32 et des moyens de manoeuvre de ces moyens de fermeture permettant de commander une ouverture synchronisée de ces logements.According to a feature of the device according to the present invention, it comprises means for closing the housings 3 1 and 3 2 and means for operating these closure means for controlling a synchronized opening of these housings.

Ces moyens de fermeture des logements 31, 32 sont constitués par des volets 71, 72 respectivement, représentés aux figures 1 et 2 en position d'ouverture et en position de fermeture respectivement. Comme cela apparaît sur ces figures, ces volets 71, 72 sont fixés à une extrémité d'un bras de levier 81, 82 respectivement dont l'autre extrémité est articulée sur le châssis 1, autour d'axes 91, 92 respectivement. Chacun de ces volets est en forme de secteur cylindrique d'axe confondu avec l'axe de rotation du bras de levier qui le supporte. L'ouverture angulaire du secteur est calculée pour que les volets 71, 72 puissent couvrir ou découvrir complètement des fenêtres 101, 102 découpées dans le châssis 1 en regard des faces des paniers 21, 22 par lesquelles sortent les cartouches.These means for closing the housings 3 1 , 3 2 are constituted by flaps 7 1 , 7 2 respectively, represented in FIGS. Figures 1 and 2 in the open position and in the closed position respectively. As shown in these figures, these flaps 7 1 , 7 2 are attached to one end of a lever arm 8 1 , 8 2 respectively whose other end is articulated on the frame 1, about axes 9 1 , 9 2 respectively. Each of these flaps is in the form of a cylindrical sector axis coincides with the axis of rotation of the lever arm that supports it. The angular aperture of the sector is calculated so that the flaps 7 1 , 7 2 can cover or completely discover windows 10 1 , 10 2 cut in the frame 1 facing the sides of the baskets 2 1 , 2 2 through which the cartridges come out .

Il est important que les cartouches contenues dans les paniers 21 et 22 puissent être éjectées simultanément des deux côtés de l'avion, pour assurer une protection complète de celui-ci. Lors de l'activation du système de protection constitué par le système radar et le dispositif lance leurres, il est avantageux que les volets s'ouvrent en synchronisme.It is important that the cartridges contained in the baskets 2 1 and 2 2 can be ejected simultaneously on both sides of the aircraft, to ensure complete protection thereof. When activating the protection system constituted by the radar system and the device launches lures, it is advantageous that the shutters open in synchronism.

Pour ce faire, selon la présente invention, les moyens de manoeuvre des volets du dispositif lance leurres suivant l'invention comprennent un organe moteur unique 11 agissant simultanément sur les deux volets. A titre illustratif et non limitatif seulement, cet organe moteur peut être constitué par un vérin, électrique par exemple.To do this, according to the present invention, the means for operating the flaps of the lure device according to the invention comprise a single motor member 11 acting simultaneously on the two flaps. By way of illustration and not limitation only, this drive member may be constituted by a cylinder, electric for example.

Des bielles de manoeuvre 131, 132 sont articulées à une extrémité sur les volets 71, 72 pour les faire basculer autour des axes 91, 92 respectivement, entre leur position de fermeture et d'ouverture (voir sur la figure 2 l'articulation 141 de la bielle 131 sur le volet 71).Maneuvering rods 13 1 , 13 2 are articulated at one end to the flaps 7 1 , 7 2 to tilt them about the axes 9 1 , 9 2 respectively, between their closed and open position (see figure 2 the hinge 14 1 of the rod 13 1 on the flap 7 1 ).

Ces bielles 131, 132 sont articulées à leur autre extrémité sur des renvois d'angle 151, 152 eux-mêmes articulés sur des ferrures 161, 162 respectivement, solidaires du châssis 1.These connecting rods 13 1 , 13 2 are articulated at their other end to angular references 15 1 , 15 2 themselves articulated on fittings 16 1 , 16 2 respectively, secured to the frame 1.

Comme cela apparaît à l'examen combiné des figures 1 et 2, le renvoi d'angle 152 est solidaire d'un bras 16 articulé à son extrémité libre sur le piston 12 du vérin 11. Une commande appropriée de ce vérin permet ainsi de faire basculer ce renvoi et donc le volet 72 actionné par la bielle de manoeuvre 132, entre ses positions d'ouverture et de fermeture représentées aux figures 1 et 2, respectivement.As appears in the Combined Examination of Figures 1 and 2 , the angle gear 15 2 is integral with an arm 16 hinged at its free end on the piston 12 of the cylinder 11. A suitable control of this jack thus makes it possible to tilt this return and therefore the flap 7 2 actuated by the operating rod 13 2 , between its open and closed positions represented at Figures 1 and 2 , respectively.

Comme cela apparaît aussi sur ces figures, une bielle de liaison 17 couple mécaniquement et rigidement, c'est-à-dire sans jeu, les renvois d'angle 151 et 152 entre lesquels elle est montée, par le moyen d'articulations 181 et 182 respectivement. Ce couplage permet aux bielles 131 et 132 de faire pivoter en synchronisme les volets 71 et 72. C'est ainsi que ceux-ci passent simultanément de leur position de fermeture à leur position d'ouverture quand le vérin 11 pousse son piston 12 en position d'extension. Inversement, quand le vérin commande la rétraction du piston, les volets passent de leur position d'ouverture à leur position de fermeture.As also appears in these figures, a connecting rod 17 mechanically and rigidly couples, that is to say without play, the angle of return 15 1 and 15 2 between which it is mounted, by means of joints 18 1 and 18 2 respectively. This coupling allows the rods 13 1 and 13 2 to rotate synchronously flaps 7 1 and 7 2 . Thus they pass simultaneously from their closed position to their open position when the cylinder 11 pushes its piston 12 to the extended position. Conversely, when the cylinder controls the retraction of the piston, the flaps go from their open position to their closed position.

Le fonctionnement du dispositif suivant l'invention s'établit alors comme suit. Lorsque le système de protection défini plus haut est activé, le vérin 11 est actionné pour que les volets 71 et 72 passent de leur position normale de fermeture en vol à leur position d'ouverture, pour ouvrir les fenêtres 101, 102 permettant l'éjection de cartouches de leurres sous la commande du système radar. Après l'éjection des cartouches, le vérin est de nouveau actionné pour rappeler les volets dans leur position de fermeture.The operation of the device according to the invention is then established as follows. When the protection system defined above is activated, the cylinder 11 is actuated so that the flaps 7 1 and 7 2 pass from their normal position of closure in flight to their open position, to open the windows 10 1 , 10 2 allowing the ejection of decoy cartridges under the control of the radar system. After the ejection of the cartridges, the cylinder is again actuated to return the flaps in their closed position.

Bien entendu, pour la maintenance et le rechargement des paniers lances leurres, le vérin 11 peut aussi être actionné manuellement par le personnel au sol ou par l'équipage, au moyen d'une commande électrique déportée.Of course, for the maintenance and reloading of the decoy lure baskets, the cylinder 11 can also be manually operated by the personnel on the ground or by the crew, by means of a remote electric control.

Le dispositif suivant l'invention est équipé, en outre, de deux paires de capteurs de proximité (20a, 20b) et (21a, 21b) respectivement, coopérant avec des palettes fixes 221 et 222 respectivement pour détecter les positions occupées par les bras 81, 82, et donc celles des volets 71, 72 quand ces derniers sont dans leur position de pleine ouverture ou dans leur position de pleine fermeture. Cet ensemble de capteurs, en nombre largement redondant, permet de former un signal très sécurisé, assurément représentatif des positions occupées par les deux volets.The device according to the invention is further equipped with two pairs of proximity sensors (20a, 20b) and (21a, 21b) respectively, cooperating with fixed vanes 22 1 and 22 2 respectively to detect the positions occupied by the arms 8 1 , 8 2 , and therefore those of the flaps 7 1 , 7 2 when they are in their fully open position or in their fully closed position. This set of sensors, in a largely redundant number, makes it possible to form a very secure signal, certainly representative of the positions occupied by the two components.

La surveillance de ces positions intervient dans les moyens logiques utilisés pour autoriser le tir de cartouches. Elle intervient aussi pour signaler à l'équipage de l'avion l'état de sécurité du dispositif lance leurres. C'est ainsi, par exemple, que si les volets ne sont pas complètement fermés alors que l'avion est au sol, l'équipage en est informé par un voyant commandé par le signal tiré des informations produites par l'ensemble des capteurs de proximité. Cette non fermeture, ou fermeture incomplète, laisse apparaître tout ou partie des cartouches pour les usagers de l'aéroport, au détriment de la nécessaire discrétion qui doit entourer la présence de celles-ci sur l'avion, en particulier quand l'avion assure des transports civils ou commerciaux. En outre cette fermeture incomplète n'assure pas le confinement des charges pyrotechniques contenues dans les cartouches et pose alors un problème quant à la sécurité des usagers de l'aéroport. A l'occurrence d'une telle situation, l'équipage peut alors demander au personnel de contrôle de l'aéroport un déplacement de l'avion vers une zone de parking isolée.The monitoring of these positions is involved in the logical means used to authorize the firing of cartridges. It also intervenes to signal to the crew of the aircraft the safety state of the device launches lures. Thus, for example, if the flaps are not completely closed while the aircraft is on the ground, the crew is informed by a light controlled by the signal drawn from the information produced by all the sensors of the aircraft. proximity. This non-closure, or incomplete closure, reveals all or part of the cartridges for the users of the airport, to the detriment of the necessary discretion that must surround the presence of these on the aircraft, especially when the aircraft ensures civil or commercial transport. In addition, this incomplete closure does not ensure the containment of the pyrotechnic charges contained in the cartridges and poses a problem with regard to the safety of the users of the airport. In the event of such a situation, the crew may then ask the airport control personnel to move the aircraft to an isolated parking area.

Il apparaît maintenant que l'invention permet bien d'atteindre les buts annoncés, à savoir, et notamment, assurer la protection en vol des leurres vis-à-vis des contraintes sévères de l'environnement, limiter la traînée, supprimer les bruits d'origine aérodynamique évoqués en préambule de la présente description, et contribuer, au sol, à la protection des personnes et des matériels présents sur les aéroports.It now appears that the invention makes it possible to achieve the stated goals, namely, and in particular, provide in-flight protection of lures vis-à-vis the severe environmental constraints, limit drag, remove noises aerodynamic origin mentioned in the preamble of this description, and contribute, on the ground, to the protection of people and materials present at airports.

Les volets mobiles qui équipent le dispositif suivant l'invention sont en outre susceptibles d'empêcher la mise à feu et l'éjection d'une charge pyrotechnique dans le cas d'une commande de tir intempestive des leurres. En effet, certains leurres disponibles sur le marché prennent la forme d'une cartouche équipée d'un mécanisme de sécurité qui fonctionne comme suit.The movable flaps that equip the device according to the invention are further capable of preventing the firing and ejection of a pyrotechnic charge in the case of an untimely shot control lures. Indeed, some decoys available on the market take the form of a cartridge equipped with a safety mechanism that operates as follows.

La cartouche comprend une amorce pyrotechnique initiée électriquement. En fonctionnement normal, l'initiation de cette amorce initie à son tour une charge de « dépotage », ou d'éjection. L'ensemble de la cartouche est alors mis en mouvement par la pression des gaz dégagés. Un coulisseau formant partie du mécanisme de sécurité permet d'assurer la mise à feu de la charge pyrotechnique par la charge de dépotage quand l'ensemble de la cartouche sort de son logement dans un délai prédéterminé, fonction de la durée de combustion de la charge de dépotage.The cartridge includes an electrically initiated pyrotechnic primer. In normal operation, the initiation of this primer initiates in turn a load of "unloading", or ejection. The entire cartridge is then set in motion by the pressure of the gases released. A slider forming part of the safety mechanism makes it possible to ignite the pyrotechnic charge by the unloading charge when the entire cartridge leaves its housing within a predetermined time, depending on the burning time of the unloading charge.

Cependant, l'initiation de l'amorce pyrotechnique pourrait être déclenchée accidentellement, par exemple en cas de foudroiement de l'aéronef alors que le dispositif suivant l'invention est en sécurité, au sol ou en vol, les volets mobiles étant fermés. Ceux-ci empêchent alors l'éjection complète de la cartouche en dehors de son logement, la mise en mouvement du coulisseau et donc la mise à feu de la charge pyrotechnique, ainsi neutralisée.However, the initiation of the pyrotechnic primer could be triggered accidentally, for example in case of lightning strike of the aircraft while the device according to the invention is safe, on the ground or in flight, the movable flaps being closed. These then prevent the complete ejection of the cartridge outside its housing, the setting in motion of the slider and thus the ignition of the pyrotechnic charge, thus neutralized.

Bien entendu l'invention n'est pas limitée au mode de réalisation décrit et représenté qui n'a été donné qu'à titre d'exemple. C'est ainsi que des aéronefs autres que des avions pourraient être équipés du dispositif lance leurres suivant l'invention. C'est ainsi encore que ce dispositif pourrait être intégré à l'intérieur du fuselage de l'avion plutôt que rapporté sur la face externe de ce fuselage. Dans cette hypothèse les volets, en position de fermeture, assurent avantageusement la continuité du revêtement du fuselage, de manière à être sans impact sur la traînée. Le dispositif suivant l'invention pourrait encore être installé, de même, par exemple dans le carénage de roues, dans celui de mâts moteurs sous voilure ou encore dans la dérive, etc.Naturally, the invention is not limited to the embodiment described and shown which has been given only by way of example. Thus, aircraft other than aircraft could be equipped with the lure device according to the invention. It is thus still that this device could be integrated inside the fuselage of the aircraft rather than reported on the outer face of this fuselage. In this case the flaps, in the closed position, advantageously provide continuity of the coating of the fuselage, so as to have no impact on the drag. The device according to the invention could also be installed, likewise, for example in the wheel fairing, in that of under-wing engine masts or in the drift, etc.

Claims (10)

Dispositif lance leurres pour aéronef, comprenant au moins des premier (31) et deuxième (32) logements de réception d'au moins des premier (21) et deuxième (22) paniers lance leurres respectivement, lesdits logements (31,32) étant ouverts pour permettre l'éjection, à l'extérieur dudit aéronef, des leurres contenus dans lesdits premier (21) et deuxième (22) paniers respectivement, caractérisé en ce qu'il comprend des premier (71) et deuxième (72) volets mobiles de fermeture desdits premier (31) et deuxième (32) logements respectivement, et des moyens de manoeuvre (11 ; 131, 132 ; 151, 152 ; 17) desdits volets (71, 72) pour commander sélectivement l'ouverture desdits logements (31, 32) avant ladite éjection.Apparatus for launching lures for an aircraft, comprising at least first (3 1 ) and second (3 2 ) receiving housings of at least first (2 1 ) and second (2 2 ) lure launch baskets respectively, said housing (3 1) , 3 2 ) being open to permit the ejection, outside said aircraft, of the lures contained in said first (2 1 ) and second (2 2 ) baskets respectively, characterized in that it comprises first (7 1 ) and second (7 2 ) movable shutters for closing said first (3 1 ) and second (3 2 ) housings respectively, and operating means (11; 13 1 , 13 2 ; 15 1 , 15 2 ; 17) of said shutters; (7 1 , 7 2 ) for selectively controlling the opening of said housings (3 1 , 3 2 ) before said ejection. Dispositif conforme à la revendication 1, caractérisé en ce que lesdits moyens de manoeuvre (11 ; 131, 132 ; 151, 152 ; 17) comprennent un organe moteur (11) unique.Device according to claim 1, characterized in that said operating means (11; 13 1 , 13 2 ; 15 1 , 15 2 ; 17) comprise a single drive member (11). Dispositif conforme à la revendication 2, caractérisé en ce que ledit organe moteur (11) est un vérin.Device according to claim 2, characterized in that said motor member (11) is a jack. Dispositif conforme à la revendication 3, caractérisé en ce qu'il comprend un châssis (1) et en ce que chaque volet (71, 72) est fixé à une extrémité d'un bras de levier (81, 82) dont l'autre extrémité est articulée sur ledit châssis (1), une bielle de manoeuvre (131, 132) dudit volet (71, 72) étant montée entre celui-ci et un renvoi d'angle (151, 152) également articulé sur ledit châssis (1), lesdits renvois d'angle (151, 152) étant rigidement couplés en rotation par une bielle de liaison (17).Device according to claim 3, characterized in that it comprises a frame (1) and in that each flap (7 1 , 7 2 ) is attached to one end of a lever arm (8 1 , 8 2 ) whose other end is hinged to said frame (1), an operating rod (13 1 , 13 2 ) of said flap (7 1 , 7 2 ) being mounted between the latter and an angle gear (15 1 , 2 ) also articulated on said frame (1), said angle references (15 1 , 15 2 ) being rigidly coupled in rotation by a connecting rod (17). Dispositif conforme à la revendication 4, caractérisé en ce que ledit vérin (11) est mécaniquement couplé auxdits renvois d'angle (151,152) pour les faire basculer sélectivement entre des première et deuxième positions correspondant aux positions de fermeture et d'ouverture desdits volets (71, 72), respectivement.Apparatus according to claim 4, characterized in that said ram (11) is mechanically coupled to said angle gears (15 1 , 15 2 ) to be tilted selectively between first and second positions corresponding to the closed and closed positions. opening said flaps (7 1 , 7 2 ), respectively. Dispositif conforme à l'une quelconque des revendications 4 et 5, caractérisé en ce que chacun desdits volets (71, 72) prend la forme d'un secteur cylindrique mobile en rotation autour de son axe, confondu avec l'axe de rotation du bras de levier (81, 82) qui le supporte.Device according to any one of claims 4 and 5, characterized in that each of said flaps (7 1 , 7 2 ) takes the form of a cylindrical sector movable in rotation about its axis, coincides with the axis of rotation lever arm (8 1 , 8 2 ) that supports it. Dispositif conforme à l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend au moins un capteur de proximité (20a, 20b , 21 a, 21 b) placé au voisinage d'au moins un desdits volets (71, 72), pour émettre un signal représentatif de la position desdits volets.Device according to any one of the preceding claims, characterized in that it comprises at least one proximity sensor (20a, 20b, 21a, 21b) placed in the vicinity of at least one of said flaps (7 1 , 7 2 ), to emit a signal representative of the position of said flaps. Aéronef présentant un fuselage, équipé du dispositif conforme à l'une quelconque des revendications 1 à 7, caractérisé en ce que ledit dispositif est monté sur ledit fuselage.Aircraft having a fuselage, equipped with the device according to any one of claims 1 to 7, characterized in that said device is mounted on said fuselage. Aéronef présentant un fuselage, équipé du dispositif conforme à l'une quelconque des revendications 1 à 7, caractérisé en ce que ledit dispositif est monté à l'intérieur dudit aéronef, lesdits volets étant disposés, en position de fermeture, dans la continuité de la surface dudit fuselage.Aircraft having a fuselage, equipped with the device according to any one of claims 1 to 7, characterized in that said device is mounted inside said aircraft, said flaps being arranged, in the closed position, in the continuity of the surface of said fuselage. Utilisation de l'aéronef conforme à l'une quelconque des revendications 8 et 9, à la réalisation de vols civils ou commerciaux.Use of the aircraft according to any one of claims 8 and 9, for the realization of civil or commercial flights.
EP08100549A 2007-01-25 2008-01-16 Decoy launch device for aircraft Active EP1950522B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0700515A FR2911846B1 (en) 2007-01-25 2007-01-25 DEVICE LAUNCHES LURES FOR AIRCRAFT

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IL (1) IL188901A (en)

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WO2010082881A1 (en) * 2009-01-16 2010-07-22 Saab Ab An arrangement at an aircraft of a dispenser unit for countermeasures
WO2010082882A1 (en) * 2009-01-16 2010-07-22 Saab Ab Dispenser unit for countermeasures
WO2010123424A1 (en) * 2009-04-23 2010-10-28 Saab Ab Closable counter-measure compartments for a dispenser unit
WO2010144008A1 (en) * 2009-06-11 2010-12-16 Saab Ab Air guiding means for a dispenser
US8549976B2 (en) 2009-04-23 2013-10-08 Saab Ab Arrangement for storing and launching payloads
US8607682B2 (en) 2009-04-23 2013-12-17 Saab Ab Countermeasure arrangement

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GB2177668A (en) * 1984-08-31 1987-01-28 Westland Plc Helicopter with missile supporting means
FR2665875A1 (en) 1990-08-17 1992-02-21 Aerospatiale Decoy launcher installation for aircraft
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Publication number Priority date Publication date Assignee Title
WO2010082881A1 (en) * 2009-01-16 2010-07-22 Saab Ab An arrangement at an aircraft of a dispenser unit for countermeasures
WO2010082882A1 (en) * 2009-01-16 2010-07-22 Saab Ab Dispenser unit for countermeasures
US8695847B2 (en) 2009-01-16 2014-04-15 Saab Ab Dispenser unit for countermeasures
US9045228B2 (en) 2009-01-16 2015-06-02 Saab Ab Arrangement at an aircraft of a dispenser unit for countermeasures
WO2010123424A1 (en) * 2009-04-23 2010-10-28 Saab Ab Closable counter-measure compartments for a dispenser unit
US8549976B2 (en) 2009-04-23 2013-10-08 Saab Ab Arrangement for storing and launching payloads
US8607682B2 (en) 2009-04-23 2013-12-17 Saab Ab Countermeasure arrangement
US8720829B2 (en) 2009-04-23 2014-05-13 Saab Ab Closable counter-measure compartments for a dispenser unit
WO2010144008A1 (en) * 2009-06-11 2010-12-16 Saab Ab Air guiding means for a dispenser
US8985518B2 (en) 2009-06-11 2015-03-24 Saab Ab Air guiding means for a dispenser

Also Published As

Publication number Publication date
EP1950522B1 (en) 2011-08-24
ATE521869T1 (en) 2011-09-15
IL188901A0 (en) 2008-11-03
FR2911846A1 (en) 2008-08-01
FR2911846B1 (en) 2009-04-24
IL188901A (en) 2012-02-29

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