EP0354088A1 - Device for opening projectile fins - Google Patents

Device for opening projectile fins Download PDF

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Publication number
EP0354088A1
EP0354088A1 EP89402060A EP89402060A EP0354088A1 EP 0354088 A1 EP0354088 A1 EP 0354088A1 EP 89402060 A EP89402060 A EP 89402060A EP 89402060 A EP89402060 A EP 89402060A EP 0354088 A1 EP0354088 A1 EP 0354088A1
Authority
EP
European Patent Office
Prior art keywords
striker
locking member
piston
holder
control member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89402060A
Other languages
German (de)
French (fr)
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EP0354088B1 (en
Inventor
Claude Boutet
Daniel Guenin
Jean Rat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giat Industries SA
Original Assignee
Direction General pour lArmement DGA
Giat Industries SA
Etat Francais
Priority date (The priority date 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 date listed.)
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Application filed by Direction General pour lArmement DGA, Giat Industries SA, Etat Francais filed Critical Direction General pour lArmement DGA
Priority to AT89402060T priority Critical patent/ATE78334T1/en
Publication of EP0354088A1 publication Critical patent/EP0354088A1/en
Application granted granted Critical
Publication of EP0354088B1 publication Critical patent/EP0354088B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02Stabilising arrangements
    • F42B10/14Stabilising arrangements using fins spread or deployed after launch, e.g. after leaving the barrel
    • F42B10/20Stabilising arrangements using fins spread or deployed after launch, e.g. after leaving the barrel deployed by combustion gas pressure, or by pneumatic or hydraulic forces

Definitions

  • the present invention relates to a device for opening the tail of an artillery projectile.
  • the deploying tail unit has the advantage of being less bulky in length than a fixed tail unit which, to be effective, must be pushed far behind the body of the projectile; in fact, for a smaller footprint, it allows better stabilization, therefore greater precision.
  • this type of empennage allows the shooting by means of a tube with the caliber of the projectile.
  • document FR-A-2 221 707 discloses an artillery projectile tail opening device, of the type comprising a mounting body, an opening control member movable axially with respect to said body. from a first position where it keeps the tail closed, to a second position where it keeps the tail open, and control means for said control member, said control means comprising a piston sensitive to the pressure of the gases in the launcher tube and a gas generator arranged to bring the opening control member from its first to its second position.
  • the gases act on the fins by means of differential pistons subjected in the tube to the pressure of the propellant gases of the projectile exerted on a large surface of this piston, the gases tending to open the fins n ' acting only on a significantly smaller surface.
  • the thrust due to the propellant gases is very significantly greater and therefore keeps the tail closed.
  • the present invention aims to overcome these drawbacks by providing a simple and therefore inexpensive device allowing an almost instantaneous opening of the tail unit as soon as it leaves the tube, and only outside the tube, in a perfectly symmetrical manner.
  • the invention also aims to provide a device having all the guarantees of storage and handling security.
  • the subject of the present invention is a device for opening the tail of an artillery projectile of the type mentioned above, characterized in that said control means comprise: - a striker for the gas generator, a striker holder member to which the striker is linked by unlockable blocking means, a locking member arranged to keep the locking means locked in a first relative position of the striker holder and the locking member and to unlock them in a second relative position, holding means for holding the striker-striker-striker-locking member assembly in a storage position relative to the control member while maintaining the striker holder and the locking member in their first relative position, - Said piston, arranged to bring against the action of the means for holding said assembly from said storage position to an arming position when the pressure exerted on said piston exceeds a first predetermined value, while maintaining the striker holder and the the locking member in their first relative position as long as said pressure remains above a second predetermined value, and - elastic means for bringing the striker holder and the locking member into their second
  • the striker in the storage position, the striker is kept in the locked position in the striker holder. Only the considerable pressure (of the order of 2000 bars) prevailing in the barrel chamber at the start of the shot can oppose the holding means, and thus bring the assembly constituted by the striker holder the striker and the locking member in the armed position. Again, there is no risk of premature opening of the tail since the striker holder remains locked until the elastic means can oppose the pressure prevailing in the tube. However, when the projectile is about to leave this tube, the pressure is still extremely high (of the order of 400 bars). It is therefore sufficient to calibrate the spring so that it can only oppose a pressure of a few bars (for example 15 bars) to be absolutely certain that it will not cause the striker to be unlocked before the projectile is completely out of the tube.
  • said locking means comprise at least one claw connected to the striker holder and engaged in the locked position in a corresponding recess of the striker, said claw being held in the recess by a stop surface of the locking member when the striker holder and the locking member are in their first relative position, said abutment surface being erased when the striker holder and the locking member are in their second relative position.
  • said holding means comprise a first shear piece secured to the striker holder and engaged in the storage position in a recess in the control member, two cooperating stops of the member locking and the control member now, in this storage position the striker holder and the locking member in their first relative position.
  • the piston and the locking member are integral, the locking member then exercising the function of thrust member to bring the striker-holder-striker-locking member assembly from its storage position to its position d arming by causing the shearing of the holding means.
  • the elastic means can be produced in the form of a compression spring disposed between the striker and the locking member, and tending to separate them from each other against the action of the piston.
  • the striker holder and the control member may more particularly comprise cooperating abutment surfaces, these abutments being maintained in contact in said cocking position under the action of the piston.
  • the striker holder and the locking member are arranged to slide in a bore of the control member, and the striker is arranged to slide in a bore of the striker holder.
  • the device according to the invention may also comprise a second shear piece integral with the control member, engaged, in the first position of this member, in a recess of the body.
  • the control member can, for the sake of simplicity, form a piston sliding in a bore of the body under the action of the gases of the gas generator, which cause the shearing of the second shearing part.
  • the device of Figure 1 comprises a body 1 provided with a thread 2 for mounting on the base of an artillery projectile or on an intermediate piece. It is substantially symmetrical in revolution around an axis 00.
  • a piston 3 is slidably mounted in an axial bore of the body 1, a shear flange 4 engaged in a peripheral counterbore of the bore and blocked by a bottom plate (not shown), however preventing this sliding as long as it is not not sheared.
  • O-rings 5 seal between the piston 3 and the body 1.
  • An actuating member 8 is screwed to the rear of the piston 3 with the interposition of an O-ring seal 9.
  • a locking nut 10 is itself screwed to the rear part of the actuating member 8, for reasons which will be explained below.
  • a countersink in the piston 3 forms an annular groove 11. This groove allows the engagement of a shear flange 12 formed at the periphery of a carrier member - piercer 13 arranged in a bore 14 of the piston 3.
  • An axial bore 16 is formed in the striker holder 13, which comprises in the extension of the surface of this bore elastic branches 17 terminated at their ends by claws 18 (FIG. 2b) extending axially inwards relative at bore 16.
  • the bore 16 also receives a sliding striker 19 comprising at its outer periphery an annular groove 20 of shape complementary to that of the claws 18, so that the claws can engage in the groove.
  • the actuating member 8 also comprises a bore of the same diameter as the bore 14, and coaxial with the latter, in which is disposed a pushing piece 21 whose front part forms a locking member 22 and whose rear part forms a piston rod 23.
  • the locking member 22 has a first bore 24 towards the front and a rear bore and a second bore 25 of smaller diameter.
  • the bore 25 has a diameter such that it forms an abutment surface for the radially outer surfaces of the claws 18, thus preventing the latter from leaving the groove 20 when the front part of the thrust piece 21 is in contact with the rear part of the striker holder 13.
  • an axial bore of the striker receives a compression spring 29 bearing on the one hand on an internal face of this striker, and on the other hand on the bottom of the bores of the thrust piece 21, thus tending to spread the striker of this room.
  • the piston rod 23 carries at its rear end the piston 30 proper, which is arranged in a chamber 31 formed in the actuating member 8 and opening into the open air at its rear part through a plug. maintenance.
  • the piston 30 comprises a front part 30a of reduced diameter allowing a certain radial expansion of the piston and avoiding any jamming of the latter which would prevent the return of the thrust piece 21 and therefore the opening of the tail.
  • a slightly larger diameter portion 31a is provided in its housing in the actuating member 8.
  • the piston 30 has on its front face 30b a coating of a low friction material, in particular PTFE for example with a thickness of 0.1 mm, making it possible to ensure gas tightness.
  • a low friction material in particular PTFE for example with a thickness of 0.1 mm
  • a gas generator 32 is placed in a chamber formed at the front of the piston 3 opposite the striker 19.
  • Figure 3a shows the device described above in its storage position shown in Figure 1, and mounted at the rear part of the base 33 of an artillery projectile deploying tail.
  • This empennage consists of fins 34 rotatably mounted on an axis 35.
  • Each fin has a tooth 36 whose sides are arranged to cooperate with the sides of an annular groove 37 of the control member 15. It will be noted that these sidewalls are formed on the one hand by an external shoulder of the actuating part 8 and on the other hand, by the nut 10. The latter is screwed onto the actuating part 8 so as to adjust the clearance between the two flanks of tooth 36.
  • the groove 37 has an axial position such that it maintains the fins 34 in the folded position towards the axis of the device.
  • the chamber 31 When the projectile is placed in the firing position in the core of a barrel, the chamber 31 is therefore in communication with the chamber of this barrel. When the blow is initiated, an extremely high pressure develops in this chamber, thus pushing the part 21 forward and causing the shearing of the flange 12 of the striker holder 13.
  • the assembly constituted by the thrust piece 21, the striker holder 13 and the striker 19 are thus propelled in one piece towards the front, leaving in place the flange 12. This movement ceases when the assembly is blocked in the cocking position by two cooperating stops formed respectively from the front face 38 of the firing pin holder and a shoulder 39 produced at the front end of the bore 14. The assembly is thus held in abutment as shown in the FIG. 3b as long as there is sufficient pressure in chamber 31.
  • the abutment surface 25 is erased in front of the claws 18 of the striker holder 13.
  • the spring 29 pushes not only the pushing piece 21 backwards but also the striker 19 forwards, including the rear part 40 pushes the claws 18 axially outwards in the bore 24 under the combined action of two inclined planes 41 and 42 formed respectively on the claws 18 and on the rear flank of the groove 20 (fig.2b).
  • the striker 19 is thus released from the striker holder 13 and is propelled forward where it strikes the gas generator 32 as shown in FIG. 3c.
  • the fin 34 remains immobilized in the deployed position due to the jamming of the abutment surfaces 43, 44 on the member 15.
  • This simple, therefore inexpensive embodiment device ensures extremely rapid opening of the tail (less than 5 milliseconds) and effective locking of the fins both in the folded position and in the open position.
  • Another advantage of the device lies in the high level of security that it provides, due to the importance of the forces necessary for its activation, excluding any risk of opening following falls or other rough handling.

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  • Physics & Mathematics (AREA)
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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Catching Or Destruction (AREA)
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  • Manufacture Of Iron (AREA)
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Abstract

The invention relates to a device for opening artillery projectile fins, carrying a mounting body (1), an opening command member movable axially relative to the said body and control means for the said command member, comprising a piston (23) sensitive to the pressure of the gases in the launcher tube and a gas generator (32). The control means comprise, in addition to the piston (23), a striker (19) for the gas generator, a striker carrier member (13), to which the striker is connected by releasable blocking means (20), a locking member (22), retaining means and elastic means (29). The device ensures extremely rapid opening of the fins and an effective blocking of these in both the folded-up and the open position. <IMAGE>

Description

La présente invention concerne un dispositif d'ouverture d'empennage de projectile d'artillerie.The present invention relates to a device for opening the tail of an artillery projectile.

On connaît déjà des projectiles d'artillerie à empennage déployant tiré à partir de canons à tube lisse ou rayé. L'empennage déployant présente l'avantage d'être moins encombrant en longueur qu'un empennage fixe qui, pour être efficace, doit être repoussé loin en arrière du corps du projectile ; en fait, pour un encombrement moindre, il permet une meilleure stabilisation, donc une précision supérieure.We already know artillery projectiles with a deploying tail unit fired from cannons with a smooth or striped tube. The deploying tail unit has the advantage of being less bulky in length than a fixed tail unit which, to be effective, must be pushed far behind the body of the projectile; in fact, for a smaller footprint, it allows better stabilization, therefore greater precision.

Par ailleurs, ce type d' empennage permet le tir au moyen d'un tube au calibre du projectile.In addition, this type of empennage allows the shooting by means of a tube with the caliber of the projectile.

Par contre, afin d'éviter tout contact des ailettes de l'empennage avec le tube, et donc toute dégradation en phase balistique intérieure, ces ailettes doivent obligatoirement être verrouillées en position fermée.On the other hand, in order to avoid any contact of the tail fins with the tube, and therefore any degradation in the interior ballistic phase, these fins must necessarily be locked in the closed position.

Leur ouverture ne doit intervenir qu'après la sortie du tube, dans le temps le plus court possible et de manière parfaitement symétrique, afin d'assurer la stabilisation immédiate du projectile sur sa trajectoire. Sur cette trajectoire enfin, les ailettes doivent être verrouillées en position d'ouverture de manière à conserver stabilité et précision au projectile, mais également parce qu'elles se refermeraient d'elles-mêmes sous la pression des contraintes aérodynamiques.They should only be opened after they exit the tube, in the shortest possible time and in a perfectly symmetrical manner, in order to ensure the immediate stabilization of the projectile on its trajectory. Finally, on this trajectory, the fins must be locked in the open position so as to maintain stability and precision with the projectile, but also because they would close by themselves under the pressure of aerodynamic constraints.

Plus particulièrement, on connaît par le document FR-A-2 221 707 un dispositif d'ouverture d'empennage de projectile d'artillerie, du type comportant un corps de montage, un organe de commande d'ouverture mobile axialement par rapport audit corps d'une première position où il maintient l'empennage fermé à une deuxième position où il maintient l'empennage ouvert, et des moyens de contrôle pour ledit organe de commande, lesdits moyens de contrôle comprenant un piston sensible à la pression des gaz dans le tube lanceur et un générateur de gaz agencé pour amener l'organe de commande d'ouverture de sa première à sa deuxième position.More particularly, document FR-A-2 221 707 discloses an artillery projectile tail opening device, of the type comprising a mounting body, an opening control member movable axially with respect to said body. from a first position where it keeps the tail closed, to a second position where it keeps the tail open, and control means for said control member, said control means comprising a piston sensitive to the pressure of the gases in the launcher tube and a gas generator arranged to bring the opening control member from its first to its second position.

Dans ce document, les gaz agissent sur les ailettes par l'intermédiaire de pistons différentiels soumis dans le tube à la pression des gaz de propulsion du projectile s'exerçant sur une grande surface de ce piston, les gaz tendant à ouvrir les ailettes n'agissant que sur une surface notablement inférieure. En phase balistique intérieure, la poussée due aux gaz de propulsion est très sensiblement supérieure et maintient donc l'empennage fermé.In this document, the gases act on the fins by means of differential pistons subjected in the tube to the pressure of the propellant gases of the projectile exerted on a large surface of this piston, the gases tending to open the fins n ' acting only on a significantly smaller surface. In the interior ballistic phase, the thrust due to the propellant gases is very significantly greater and therefore keeps the tail closed.

Néanmoins, il existe toujours une force tendant à ouvrir l'empennage alors que le projectile est encore dans le canon. Vers la bouche de ce dernier, la pression ayant fortement chuté, cette force risque de prédominer sur celle maintenant l'empennage fermé, d'où un possible déploiement des ailettes entraînant leur dégradation au contact du tube, ainsi qu'un possible rayage de ce dernier. De plus, si le canon est muni d'un frein de bouche, les ailettes peuvent se tordre sinon se casser en le traversant. Enfin, ce dispositif est constitué de pièces complexes associées à des assemblages précis qui en rendent la réalisation délicate et coûteuse.However, there is still a force tending to open the tail while the projectile is still in the barrel. Towards the mouth of the latter, the pressure having dropped sharply, this force may predominate over that keeping the tail closed, hence a possible deployment of the fins causing their degradation in contact with the tube, as well as possible scratching of the latter. In addition, if the barrel is equipped with a muzzle brake, the fins can bend or break while crossing it. Finally, this device consists of complex parts associated with precise assemblies which make it difficult and expensive to produce.

La présente invention vise à pallier ces inconvénients en fournissant un dispositif simple et donc peu coûteux permettant une ouverture quasi instantanée de l'empennage dès sa sortie du tube, et seulement hors du tube, d'une manière parfaitement symétrique. L'invention vise également à fournir un dispositif présentant toutes les garanties de sécurité de stockage et de manutention.The present invention aims to overcome these drawbacks by providing a simple and therefore inexpensive device allowing an almost instantaneous opening of the tail unit as soon as it leaves the tube, and only outside the tube, in a perfectly symmetrical manner. The invention also aims to provide a device having all the guarantees of storage and handling security.

A cet effet, la présente invention a pour objet un dispositif d'ouverture d'empennage de projectile d'artillerie du type rappelé ci-dessus, caractérisé par le fait que lesdits moyens de contrôle comprennent :
- un percuteur pour le générateur de gaz,
- un organe porte-percuteur auquel le percuteur est lié par des moyens de blocage déverrouillables,
- un organe de verrouillage agencé pour maintenir les moyens de blocage verrouillés dans une première position relative du porte-percuteur et de l'organe de verrouillage et pour les déverrouiller dans une deuxième position relative,
- des moyens de maintien pour maintenir l'ensemble percuteur porte-percuteur-organe de verrouillage dans une position de stockage par rapport à l'organe de commande tout en maintenant le porte-percuteur et l'organe de verrouillage dans leur première position relative,
- ledit piston, agencé pour amener contre l'action des moyens de maintien ledit ensemble de ladite position de stockage à une position d'armement lorsque la pression exercée sur ledit piston dépasse une première valeur prédéterminée, tout en maintenant le porte-percuteur et l'organe de verrouillage dans leur première position relative tant que ladite pression reste supérieure à une deuxième valeur prédéterminée, et
- des moyens élastiques pour amener le porte-percuteur et l'organe de verrouillage dans leur deuxième position relative et amener le percuteur à percuter le générateur de gaz contre l'action dudit piston lorsque ladite pression devient inférieure à ladite deuxième valeur prédéterminée.
To this end, the subject of the present invention is a device for opening the tail of an artillery projectile of the type mentioned above, characterized in that said control means comprise:
- a striker for the gas generator,
a striker holder member to which the striker is linked by unlockable blocking means,
a locking member arranged to keep the locking means locked in a first relative position of the striker holder and the locking member and to unlock them in a second relative position,
holding means for holding the striker-striker-striker-locking member assembly in a storage position relative to the control member while maintaining the striker holder and the locking member in their first relative position,
- Said piston, arranged to bring against the action of the means for holding said assembly from said storage position to an arming position when the pressure exerted on said piston exceeds a first predetermined value, while maintaining the striker holder and the the locking member in their first relative position as long as said pressure remains above a second predetermined value, and
- elastic means for bringing the striker holder and the locking member into their second relative position and causing the striker to strike the gas generator against the action of said piston when said pressure becomes lower than said second predetermined value.

0n comprend qu'un tel agencement présente toute la sécurité désirable.0n understand that such an arrangement has all the desirable security.

En effet, en position de stockage, le percuteur est maintenu en position verrouillée dans le porte-percuteur. Seule, la pression considérable (de l'ordre de 2000 bars) régnant dans la chambre du canon lors du départ du coup peut s'opposer aux moyens de maintien, et amener ainsi l'ensemble constitué par le porte-percuteur le percuteur et l'organe de verrouillage en position armée. Là encore, aucun risque d'ouverture prématurée de l'empennage n'est à craindre puisque le porte-percuteur reste verrouillé jusqu'à ce que les moyens élastiques puissent s'opposer à la pression régnant dans le tube. Or, lorsque le projectile est sur le point de quitter ce tube, la pression est encore extrêmement élevée (de l'ordre de 400 bars). Il suffit par conséquent, de tarer le ressort de manière qu'il ne puisse s'opposer qu'à une pression de quelques bars (par exemple 15 bars) pour être absolument certain qu'il ne provoquera pas le déverrouillage du percuteur avant que le projectile soit complétement sorti du tube.Indeed, in the storage position, the striker is kept in the locked position in the striker holder. Only the considerable pressure (of the order of 2000 bars) prevailing in the barrel chamber at the start of the shot can oppose the holding means, and thus bring the assembly constituted by the striker holder the striker and the locking member in the armed position. Again, there is no risk of premature opening of the tail since the striker holder remains locked until the elastic means can oppose the pressure prevailing in the tube. However, when the projectile is about to leave this tube, the pressure is still extremely high (of the order of 400 bars). It is therefore sufficient to calibrate the spring so that it can only oppose a pressure of a few bars (for example 15 bars) to be absolutely certain that it will not cause the striker to be unlocked before the projectile is completely out of the tube.

Selon un mode de réalisation particulier de l'invention, lesdits moyens de blocage comprennent au moins une griffe reliée au porte-percuteur et engagée en position de verrouillage dans un renfoncement correspondant du percuteur, ladite griffe étant maintenue dans le renfoncement par une surface de butée de l'organe de verrouillage lorsque le porte-percuteur et l'organe de verrouillage sont dans leur première position relative, ladite surface de butée étant effacée lorsque le porte-percuteur et l'organe de verrouilllage sont dans leur deuxième position relative.According to a particular embodiment of the invention, said locking means comprise at least one claw connected to the striker holder and engaged in the locked position in a corresponding recess of the striker, said claw being held in the recess by a stop surface of the locking member when the striker holder and the locking member are in their first relative position, said abutment surface being erased when the striker holder and the locking member are in their second relative position.

Egalement selon un mode de réalisation particulier de l'invention, lesdits moyens de maintien comprennent une première pièce de cisaillement solidaire du porte-percuteur et engagée en position de stockage dans un renfoncement de l'organe de commande, deux butées coopérantes de l'organe de verrouillage et de l'organe de commande maintenant, dans cette position de stockage le porte-percuteur et l'organe de verrouillage dans leur première position relative.Also according to a particular embodiment of the invention, said holding means comprise a first shear piece secured to the striker holder and engaged in the storage position in a recess in the control member, two cooperating stops of the member locking and the control member now, in this storage position the striker holder and the locking member in their first relative position.

Avantageusement, le piston et l'organe de verrouillage sont solidaires, l'organe de verrouillage exerçant alors la fonction d'organe de poussée pour amener l'ensemble percuteur-porte-percuteur-organe de verrouillage de sa position de stockage à sa position d'armement en provoquant le cisaillement des moyens de maintien.Advantageously, the piston and the locking member are integral, the locking member then exercising the function of thrust member to bring the striker-holder-striker-locking member assembly from its storage position to its position d arming by causing the shearing of the holding means.

Les moyens élastiques peuvent être réalisés sous la forme d'un ressort de compression disposé entre le percuteur et l'organe de verrouillage, et tendant à les écarter l'un de l'autre contre l'action du piston.The elastic means can be produced in the form of a compression spring disposed between the striker and the locking member, and tending to separate them from each other against the action of the piston.

Dans ces conditions, lorsque la pression devient inférieure à la deuxième valeur prédéterminée, le ressort écarte l'organe de verrouillage du porte-percuteur, efface par conséquent la surface de butée de l'organe de verrouillage, lequel libère le percuteur qui est ainsi projeté sous l'action du ressort vers le générateur de gaz.Under these conditions, when the pressure drops below the second predetermined value, the spring draws aside the locking member from the striker holder, consequently clears the abutment surface of the locking member, which releases the striker which is thus projected. under the action of the spring towards the gas generator.

Le porte-percuteur et l'organe de commande peuvent plus particulièrement comprendre des surfaces de butées coopérantes, ces butées étant maintenues en contact dans ladite position d' armement sous l'action du piston.The striker holder and the control member may more particularly comprise cooperating abutment surfaces, these abutments being maintained in contact in said cocking position under the action of the piston.

Dans un mode de réalisation avantageux de l'invention, le porte-percuteur et l'organe de verrouillage sont agencés pour coulisser dans un alésage de l'organe de commande, et le percuteur est agencé pour coulisser dans un alésage du porte-percuteur.In an advantageous embodiment of the invention, the striker holder and the locking member are arranged to slide in a bore of the control member, and the striker is arranged to slide in a bore of the striker holder.

Le dispositif selon l'invention peut également comprendre une deuxième pièce de cisaillement solidaire de l'organe de commande, engagée, dans la première position de cet organe, dans un renfoncement du corps.The device according to the invention may also comprise a second shear piece integral with the control member, engaged, in the first position of this member, in a recess of the body.

L'organe de commande peut, dans un but de simplicité, former un piston coulissant dans un alésage du corps sous l'action des gaz du générateur de gaz, qui provoquent le cisaillement de la deuxième pièce de cisaillement.The control member can, for the sake of simplicity, form a piston sliding in a bore of the body under the action of the gases of the gas generator, which cause the shearing of the second shearing part.

On décrira maintenant à titre d'exemple non limitatif un mode de réalisation particulier de l'invention en référence aux dessins annexés dans lesquels :

  • - la figure 1 est une vue en coupe axiale d'un dispositif selon l'invention dans sa position de stockage,
  • - les figures 2a et 2b sont des vues à plus grande échelle des détails IIa et IIb de la figure 1, et
  • - les figures 3a à 3d sont des vues schématiques en demi-coupe axiale illustrant le fonctionnement de ce dispositif.
A particular embodiment of the invention will now be described by way of nonlimiting example with reference to the accompanying drawings in which:
  • FIG. 1 is a view in axial section of a device according to the invention in its storage position,
  • FIGS. 2a and 2b are enlarged views of the details IIa and IIb of FIG. 1, and
  • - Figures 3a to 3d are schematic views in axial half-section illustrating the operation of this device.

Le dispositif de la figure 1 comprend un corps 1 muni d'un filetage 2 pour son montage sur le culot d'un projectile d'artillerie ou sur une pièce intermédiaire. Il est sensiblement symétrique de révolution autour d'un axe 00.The device of Figure 1 comprises a body 1 provided with a thread 2 for mounting on the base of an artillery projectile or on an intermediate piece. It is substantially symmetrical in revolution around an axis 00.

Un piston 3 est monté coulissant dans un alésage axial du corps 1, une collerette de cisaillement 4 engagée dans un lamage périphérique de l' alésage et bloquée par une plaque de fond (non représentée) empêchant toutefois ce coulissement tant qu'elle n'est pas cisaillée. Des joints toriques 5 assurent l'étanchéité entre le piston 3 et le corps 1.A piston 3 is slidably mounted in an axial bore of the body 1, a shear flange 4 engaged in a peripheral counterbore of the bore and blocked by a bottom plate (not shown), however preventing this sliding as long as it is not not sheared. O-rings 5 seal between the piston 3 and the body 1.

Des butées coopérantes 6 et 7 formées par des épaulements sur le piston 3 et sur le corps 1 respectivement, limitent le déplacement vers l'arrière (vers la droite des figures) du piston 3 par rapport au corps 1.Cooperating stops 6 and 7 formed by shoulders on the piston 3 and on the body 1 respectively, limit the rearward movement (to the right of the figures) of the piston 3 relative to the body 1.

Un organe d'actionnement 8 est vissé à l'arrière du piston 3 avec interposition d'un joint torique d' étanchéité 9. Un écrou de blocage 10 est lui-même vissé à la partie arrière de l'organe d'actionnement 8, pour des raisons qui seront exposées ci-après.An actuating member 8 is screwed to the rear of the piston 3 with the interposition of an O-ring seal 9. A locking nut 10 is itself screwed to the rear part of the actuating member 8, for reasons which will be explained below.

A la jonction entre le piston 3 et l'organe d'actionnement 8, un lamage dans le piston 3 forme une rainure annulaire 11. Cette rainure permet l'engagement d'une collerette de cisaillement 12 formée à la périphérie d'un organe porte-percuteur 13 disposé dans un alésage 14 du piston 3.At the junction between the piston 3 and the actuating member 8, a countersink in the piston 3 forms an annular groove 11. This groove allows the engagement of a shear flange 12 formed at the periphery of a carrier member - piercer 13 arranged in a bore 14 of the piston 3.

On notera que ce n'est qu'après mise en place du porte-percuteur 13 dans l'alésage 14 que l'organe d'actionnement 8 peut être vissé sur le piston 3. Après vissage, le piston 3 forme avec l'organe d' actionnement 8 un ensemble solidaire qui maintient axialement le porte-percuteur 13. Cet ensemble avec l'écrou 10 sera désigné dans les figures 3a à 3d sous le nom d'organe de commande 15.It will be noted that it is only after fitting the striker holder 13 in the bore 14 that the actuating member 8 can be screwed onto the piston 3. After screwing, the piston 3 forms with the member actuator 8 an integral assembly which axially holds the striker holder 13. This assembly with the nut 10 will be designated in FIGS. 3a to 3d under the name of control member 15.

Un alésage axial 16 est formé dans le porte-percuteur 13, qui comporte dans le prolongement de la surface de cet alésage des branches élastiques 17 terminées à leurs extrémités par des griffes 18 (figure 2b) s'étendant axialement vers l'intérieur par rapport à l'alésage 16.An axial bore 16 is formed in the striker holder 13, which comprises in the extension of the surface of this bore elastic branches 17 terminated at their ends by claws 18 (FIG. 2b) extending axially inwards relative at bore 16.

L'alésage 16 reçoit par ailleurs un percuteur coulissant 19 comportant à sa périphérie extérieure une gorge annulaire 20 de forme complémentaire à celle des griffes 18, de manière que les griffes puissent s'engager dans la gorge.The bore 16 also receives a sliding striker 19 comprising at its outer periphery an annular groove 20 of shape complementary to that of the claws 18, so that the claws can engage in the groove.

L'organe d'actionnement 8 comporte également un alésage de même diamètre que l'alésage 14, et coaxial à ce dernier, dans lequel est disposée une pièce de poussée 21 dont la partie avant forme un organe de verrouillage 22 et dont la partie arrière forme une tige de piston 23.The actuating member 8 also comprises a bore of the same diameter as the bore 14, and coaxial with the latter, in which is disposed a pushing piece 21 whose front part forms a locking member 22 and whose rear part forms a piston rod 23.

L'organe de verrouillage 22 comporte vers l'avant un premier alésage 24 et vers l'arrière et un deuxième alésage 25 de plus petit diamètre. L'alésage 25 possède un diamètre tel qu'il forme une surface de butée pour les surfaces radialement extérieures des griffes 18, empêchant ainsi celles-ci de sortir de la rainure 20 lorsque la partie avant de la pièce de poussée 21 est en contact avec la partie arrière du porte-percuteur 13.The locking member 22 has a first bore 24 towards the front and a rear bore and a second bore 25 of smaller diameter. The bore 25 has a diameter such that it forms an abutment surface for the radially outer surfaces of the claws 18, thus preventing the latter from leaving the groove 20 when the front part of the thrust piece 21 is in contact with the rear part of the striker holder 13.

Lorsque ce porte-percuteur est bloqué par sa collerette dans la position de stockage de la figure 1, la pièce de poussée 21 est elle aussi bloquée entre le porte-percuteur et deux surfaces de butée coopérantes formées par des épaulements 27 et 28 respectivement de l'organe d'actionnement 8 et de la pièce de poussée 21.When this striker holder is blocked by its flange in the storage position of FIG. 1, the pushing piece 21 is also blocked between the striker holder and two cooperating stop surfaces formed by shoulders 27 and 28 respectively of the actuating member 8 and the pushing piece 21.

Enfin, un alésage axial du percuteur reçoit un ressort de compression 29 prenant appui d'une part sur une face interne de ce percuteur, et d'autre part sur le fond des alésages de la pièce de poussée 21, tendant ainsi à écarter le percuteur de cette pièce.Finally, an axial bore of the striker receives a compression spring 29 bearing on the one hand on an internal face of this striker, and on the other hand on the bottom of the bores of the thrust piece 21, thus tending to spread the striker of this room.

La tige de piston 23 porte à son extrémité arrière le piston 30 proprement dit, qui est disposé dans une chambre 31 formée dans l'organe d'actionnement 8 et débouchant à l'air libre à sa partie arrière au travers d'un bouchon de maintien.The piston rod 23 carries at its rear end the piston 30 proper, which is arranged in a chamber 31 formed in the actuating member 8 and opening into the open air at its rear part through a plug. maintenance.

Le piston 30 comporte une partie avant 30a de diamètre réduit autorisant une certaine expansion radiale du piston et évitant tout coincement de celui-ci qui interdirait le retour de la pièce de poussée 21 et donc l'ouverture de l'empennage.The piston 30 comprises a front part 30a of reduced diameter allowing a certain radial expansion of the piston and avoiding any jamming of the latter which would prevent the return of the thrust piece 21 and therefore the opening of the tail.

Afin d'éviter un éventuel coincement de la pièce de poussée 21 il est prévu dans son logement dans l'organe d'actionnement 8 une partie de diamètre légèrement plus grand 31a.In order to avoid possible jamming of the thrust piece 21, a slightly larger diameter portion 31a is provided in its housing in the actuating member 8.

En outre, le piston 30 comporte sur sa face frontale 30b un revêtement d'un matériau à faible friction notamment du PTFE par exemple d'une épaisseur de 0,1 mm permettant d'assurer une étanchéité aux gaz.In addition, the piston 30 has on its front face 30b a coating of a low friction material, in particular PTFE for example with a thickness of 0.1 mm, making it possible to ensure gas tightness.

Enfin, un générateur de gaz 32 est disposé dans une chambre formée à l'avant du piston 3 en vis-à-vis du percuteur 19.Finally, a gas generator 32 is placed in a chamber formed at the front of the piston 3 opposite the striker 19.

La figure 3a représente le dispositif décrit ci-dessus dans sa position de stockage représentée à la figure 1, et monté à la partie arrière du culot 33 d'un projectile d'artillerie à empennage déployant.Figure 3a shows the device described above in its storage position shown in Figure 1, and mounted at the rear part of the base 33 of an artillery projectile deploying tail.

Cet empennage est constitué d'ailettes 34 montées à rotation sur un axe 35. Chaque ailette comporte une dent 36 dont les flancs sont agencés pour coopérer avec les flancs d'une gorge annulaire 37 de l'organe de commande 15. On notera que ces flancs sont constitués d'une part par un épaulement extérieur de la pièce d'actionnement 8 et d'autre part, par l'écrou 10. Ce dernier est vissé sur la pièce d'actionnement 8 de manière à régler le jeu entre les deux flancs de la dent 36.This empennage consists of fins 34 rotatably mounted on an axis 35. Each fin has a tooth 36 whose sides are arranged to cooperate with the sides of an annular groove 37 of the control member 15. It will be noted that these sidewalls are formed on the one hand by an external shoulder of the actuating part 8 and on the other hand, by the nut 10. The latter is screwed onto the actuating part 8 so as to adjust the clearance between the two flanks of tooth 36.

On notera par ailleurs que, dans la figure 3a, c'est-à-dire en position de stockage, la rainure 37 a une position axiale telle qu'elle maintient les ailettes 34 en position repliée vers l'axe du dispositif.Note also that in Figure 3a, that is to say in the storage position, the groove 37 has an axial position such that it maintains the fins 34 in the folded position towards the axis of the device.

Lorsque le projectile est placé en position de tir dans l'âme d'un canon, la chambre 31 est par conséquent en communication avec la chambre de ce canon. Lorsque le coup est initié, une pression extrêmement élevée se développe dans cette chambre, repoussant ainsi la pièce 21 vers l'avant et provoquant le cisaillement de la collerette 12 du porte-percuteur 13.When the projectile is placed in the firing position in the core of a barrel, the chamber 31 is therefore in communication with the chamber of this barrel. When the blow is initiated, an extremely high pressure develops in this chamber, thus pushing the part 21 forward and causing the shearing of the flange 12 of the striker holder 13.

L'ensemble constitué par la pièce de poussée 21, le porte-percuteur 13 et le percuteur 19 se trouvent ainsi propulsé d'un seul bloc vers l'avant, laissant en place la collerette 12. Ce mouvement cesse lorsque l'ensemble est bloqué en position d'armement par deux butées coopérantes formées respectivement de la face avant 38 du porte-percuteur et d'un épaulement 39 réalisé à l'extrémité avant de l'alésage 14. L'ensemble est ainsi maintenu en butée comme représenté à la figure 3b tant que règne une pression suffisante dans la chambre 31.The assembly constituted by the thrust piece 21, the striker holder 13 and the striker 19 are thus propelled in one piece towards the front, leaving in place the flange 12. This movement ceases when the assembly is blocked in the cocking position by two cooperating stops formed respectively from the front face 38 of the firing pin holder and a shoulder 39 produced at the front end of the bore 14. The assembly is thus held in abutment as shown in the FIG. 3b as long as there is sufficient pressure in chamber 31.

(On remarquera que le culot 33 et les ailettes 34 n'ont pas été représentés aux figures 3b et 3c, les ailettes conservant dans ces figures les mêmes positions qu'à la figure 3a).(Note that the base 33 and the fins 34 have not been shown in Figures 3b and 3c, the fins retaining in these figures the same positions as in Figure 3a).

Lorsque le projectile sort du tube, la pression dans la chambre 31 diminue brusquement pour être ramenée à quelques bars. A cet instant, la force du ressort 29 devient suffisante pour repousser la pièce 21 vers l'arrière contre l'action de la pression résiduelle.When the projectile leaves the tube, the pressure in the chamber 31 abruptly decreases to be reduced to a few bars. At this instant, the force of the spring 29 becomes sufficient to push the part 21 backwards against the action of the residual pressure.

Ainsi, la surface de butée 25 s'efface devant les griffes 18 du porte-percuteur 13. Le ressort 29 repoussant non seulement la pièce de poussée 21 vers l'arrière mais également le percuteur 19 vers l'avant, dont la partie arrière 40 repousse les griffes 18 axialement vers l'extérieur dans l'alésage 24 sous l'action conjuguée de deux plans inclinés 41 et 42 formés respectivement sur les griffes 18 et sur le flanc arrière de la rainure 20 (fig.2b).Thus, the abutment surface 25 is erased in front of the claws 18 of the striker holder 13. The spring 29 pushes not only the pushing piece 21 backwards but also the striker 19 forwards, including the rear part 40 pushes the claws 18 axially outwards in the bore 24 under the combined action of two inclined planes 41 and 42 formed respectively on the claws 18 and on the rear flank of the groove 20 (fig.2b).

Le percuteur 19 se trouve ainsi libéré du porte-percuteur 13 et est propulsé vers l'avant où il percute le générateur de gaz 32 comme montré à la figure 3c.The striker 19 is thus released from the striker holder 13 and is propelled forward where it strikes the gas generator 32 as shown in FIG. 3c.

La pression des gaz engendrée par le générateur de gaz 32 augmentant dans la chambre avant de l'organe de commande 15, cet organe tend à être repoussé vers l'arrière à la manière d'un piston.The gas pressure generated by the gas generator 32 increasing in the front chamber of the control member 15, this member tends to be pushed back like a piston.

Lorsque la pression devient suffisante, elle provoque le cisaillement de la collerette 4, libérant ainsi l'organe de commande 15 qui se déplace vers l'arrière jusqu'à ce que les butées 6 et 7 viennent en contact. Cette position est représentée à la figure 3d.When the pressure becomes sufficient, it causes the flange 4 to shear, thereby releasing the control member 15 which moves backwards until the stops 6 and 7 come into contact. This position is shown in Figure 3d.

Ce mouvement de recul de l'organe 15 provoque le pivotement des ailettes 34 autour de l'axe 35 par l'action des flancs de la gorge 37 sur les dents 36. Lorsque l'organe de commande 15 arrive en fin de course, deux surfaces de butée 43 et 44 de l'ailette 34 viennent porter sur la surface extérieure de la pièce 15 (en fait, la surface 43 porte sur le piston 3 et la surface 44 porte sur l'organe d'actionnement 8), maintenant ainsi parfaitement l'ailette 34 en position ouverte du fait que la pression des gaz du générateur 32 se maintient et empêche ainsi l'organe de commande de revenir en arrière.This backward movement of the member 15 causes the fins 34 to pivot about the axis 35 by the action of the sides of the groove 37 on the teeth 36. When the control member 15 reaches the end of the race, two abutment surfaces 43 and 44 of the fin 34 come to bear on the external surface of the part 15 (in fact, the surface 43 bears on the piston 3 and the surface 44 bears on the actuating member 8), now thus perfectly the fin 34 in the open position because the pressure of the gas from generator 32 is maintained and thus prevents the control member from turning back.

Même dans le cas d'une diminution de la pression des gaz du générateur 32, l'ailette 34 reste immobilisée en position déployée du fait du coincement des surfaces de butée 43, 44 sur l'organe 15.Even in the case of a reduction in the gas pressure of the generator 32, the fin 34 remains immobilized in the deployed position due to the jamming of the abutment surfaces 43, 44 on the member 15.

Ce dispositif de réalisation simple, donc peu coûteuse, assure une ouverture extrêmement rapide de l'empennage (inférieur à 5 millisecondes) et un blocage efficace des ailettes aussi bien en position repliée qu'ouverte.This simple, therefore inexpensive embodiment device ensures extremely rapid opening of the tail (less than 5 milliseconds) and effective locking of the fins both in the folded position and in the open position.

Par ailleurs, il n'existe aucun risque d'ouverture intempestive à l'intérieur du tube, la différence des forces antagonistes agissant sur l'organe de commande 15 étant telle que, même en cas de défaut de la charge propulsive, celui-ci reste enfoncé.Furthermore, there is no risk of inadvertent opening inside the tube, the difference in the opposing forces acting on the control member 15 being such that, even in the event of a fault in the propellant charge, the latter stays down.

En revanche, moins de cinq mètres après la sortie du tube, l'empennage est déployé et le projectile stabilisé sur sa trajectoire bénéficiant ainsi d'une excellente précision.On the other hand, less than five meters after the exit of the tube, the tail is deployed and the projectile stabilized on its trajectory thus benefiting from an excellent precision.

Enfin, un autre avantage du dispositif réside dans le niveau de sécurité élevé qu'il procure, du fait de l'importance des forces nécessaires à son activation, excluant tout risque d'ouverture consécutive à des chutes ou autres manipulations brutales.Finally, another advantage of the device lies in the high level of security that it provides, due to the importance of the forces necessary for its activation, excluding any risk of opening following falls or other rough handling.

Claims (10)

1 - Dispositif d'ouverture d'empennage de projectile d'artillerie, comportant un corps de montage (1), un organe de commande d'ouverture (15) mobile axialement par rapport audit corps d'une première position (Fig.3a) où il maintient l'empennage fermé à une deuxième position (Fig.3c) où il maintient l'empennage ouvert, et des moyens de contrôle pour ledit organe de commande, lesdits moyens de contrôle comprenant un piston (23) sensible à la pression des gaz dans le tube lanceur et un générateur de gaz (32) agencé pour amener l'organe de commande d'ouverture de sa première à sa deuxième position, caractérisé par le fait que lesdits moyens de contrôle comprennent:
- un percuteur (19) pour le générateur de gaz,
- un organe porte-percuteur (13) auquel le percuteur est lié par des moyens de blocage (18, 20) déverrouillables,
- un organe de verrouillage (22) agencé pour maintenir les moyens de blocage verrouillés dans une première position relative du porte-percuteur et de l'organe de verrouillage (Fig.3a, 3b), et pour les déverrouiller dans une deuxième position relative (Fig.3c, 3d),
- des moyens de maintien (12) pour maintenir l'ensemble percuteur-porte-percuteur-organe de verrouillage dans une position de stockage (Fig.3a) par rapport à l'organe de commande tout en maintenant le porte-percuteur et l'organe de verrouillage dans leur première position relative,
- ledit piston, agencé pour amener, contre l'action des moyens de maintien, ledit ensemble de ladite position de stockage à une position d'armement (Fig.3b) lorsque la pression exercée sur ledit piston dépasse une première valeur prédéterminée, tout en maintenant le porte-percuteur et l'organe du verrouillage dans leur première position relative tant que ladite pression reste supérieure à une deuxième valeur prédéterminée, et
- des moyens élastiques (29) pour amener le porte-percuteur et l'organe de verrouillage dans leur deuxième position relative, et amener le percuteur à percuter le générateur de gaz, contre l'action dudit piston lorsque ladite pression devient inférieure à ladite deuxième valeur prédéterminée.
1 - Artillery projectile tail opening device, comprising a mounting body (1), an opening control member (15) movable axially relative to said body from a first position (FIG. 3a) where it keeps the tail closed in a second position (Fig.3c) where it keeps the tail open, and control means for said control member, said control means comprising a piston (23) sensitive to the pressure of the gas in the launcher tube and a gas generator (32) arranged to bring the opening control member from its first to its second position, characterized in that said control means comprise:
- a striker (19) for the gas generator,
a striker-carrying member (13) to which the striker is linked by unlockable locking means (18, 20),
- a locking member (22) arranged to keep the locking means locked in a first relative position of the striker holder and the locking member (Fig. 3a, 3b), and to unlock them in a second relative position ( Fig. 3c, 3d),
- holding means (12) for holding the striker-holder-striker-locking member assembly in a storage position (Fig. 3a) relative to the control member while maintaining the striker holder and the locking member in their first relative position,
- Said piston, arranged to bring, against the action of the holding means, said assembly from said storage position to an arming position (Fig.3b) when the pressure exerted on said piston exceeds a first predetermined value, while maintaining the striker holder and the locking member in their first relative position as long as said pressure remains above a second predetermined value, and
- elastic means (29) for bringing the striker holder and the locking member into their second relative position, and causing the striker to strike the gas generator, against the action of said piston when said pressure becomes lower than said second predetermined value.
2 - Dispositif selon la revendication 1, caractérisé par le fait que lesdits moyens de blocage comprennent au moins une griffe (18) reliée au porte-percuteur et engagée, en position de verrouillage, dans un renfoncement (20) correspondant du percuteur, ladite griffe étant maintenue dans ledit renfoncement par une surface de butée (25) de l'organe de verrouillage lorsque le porte-percuteur et l'organe de verrouillage sont dans leur première position relative, ladite surface de butée étant effacée lorsque le porte-percuteur et l'organe de verrouillage sont dans leur deuxième position relative.2 - Device according to claim 1, characterized in that said locking means comprise at least one claw (18) connected to the striker holder and engaged, in the locked position, in a recess (20) corresponding to the striker, said claw being held in said recess by an abutment surface (25) of the locking member when the striker holder and the locking member are in their first relative position, said abutment surface being erased when the striker holder and the locking member are in their second relative position. 3 - Dispositif selon l'une quelconque des revendications 1 et 2, caractérisé par le fait que lesdits moyens de maintien comprennent une première pièce de cisaillement solidaire du porte-percuteur et engagée, en position de stockage, dans un renfoncement (11) de l'organe de commande, deux butées coopérantes (27, 28) de l'organe de verrouillage et de l'organe de commande maintenant, dans cette position, le porte-percuteur et l'organe de verrouillage dans leur première position relative.3 - Device according to any one of claims 1 and 2, characterized in that said holding means comprise a first shear piece secured to the striker holder and engaged, in the storage position, in a recess (11) of the 'control member, two cooperating stops (27, 28) of the locking member and the control member now, in this position, the striker holder and the locking member in their first relative position. 4 - Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que le piston et l'organe de verrouillage sont solidaires.4 - Device according to any one of claims 1 to 3, characterized in that the piston and the locking member are integral. 5 - Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé par le fait que lesdits moyens élastiques comprennent un ressort de compression disposé entre le percuteur et l'organe de verrouillage, et tendant à les écarter l'un de l'autre contre l'action du piston.5 - Device according to any one of claims 1 to 4, characterized in that said elastic means comprise a compression spring disposed between the striker and the locking member, and tending to separate them from each other against the action of the piston. 6 - Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé par le fait que le porte-percuteur et l'organe de commande comprennent des surfaces de butée coopérantes (38, 39), lesdites butées étant maintenues en contact dans ladite position d'armement sous l'action du piston.6 - Device according to any one of claims 1 to 5, characterized in that the striker holder and the control member comprise cooperating stop surfaces (38, 39), said stops being held in contact in said position arming under the action of the piston. 7 - Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé par le fait que le porte-percuteur et l'organe de verrouillage sont agencés pour coulisser dans un alésage (14) de l'organe de commande.7 - Device according to any one of claims 1 to 6, characterized in that the striker holder and the locking member are arranged to slide in a bore (14) of the control member. 8 - Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé par le fait que le percuteur est agencé pour coulisser dans un alésage (16) du porte-percuteur.8 - Device according to any one of claims 1 to 7, characterized in that the striker is arranged to slide in a bore (16) of the striker holder. 9 - Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé par le fait qu'il comprend une deuxième pièce de cisaillement (4) solidaire de l'organe de commande engagée, dans la première position de cet organe, dans un renfoncement dudit corps.9 - Device according to any one of claims 1 to 8, characterized in that it comprises a second shear piece (4) integral with the control member engaged, in the first position of this member, in a recess of said body. 10 - Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé par le fait que ledit organe de commande forme un piston coulissant dans un alésage du corps sous l'action des gaz du générateur de gaz.10 - Device according to any one of claims 1 to 9, characterized in that said control member forms a sliding piston in a bore of the body under the action of gases from the gas generator.
EP89402060A 1988-08-04 1989-07-20 Device for opening projectile fins Expired - Lifetime EP0354088B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89402060T ATE78334T1 (en) 1988-08-04 1989-07-20 DEVICE FOR OPENING THE WING SHAFT OF A PROJECTION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8810551 1988-08-04
FR8810551A FR2635178B1 (en) 1988-08-04 1988-08-04 LOCKING OPENING DEVICE FOR SHELLS

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EP0354088A1 true EP0354088A1 (en) 1990-02-07
EP0354088B1 EP0354088B1 (en) 1992-07-15

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EP (1) EP0354088B1 (en)
AT (1) ATE78334T1 (en)
CA (1) CA1334908C (en)
DE (1) DE68902108T2 (en)
FR (1) FR2635178B1 (en)
IL (1) IL91102A (en)

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FR1152013A (en) * 1953-10-20 1958-02-10 Braunschweiger Metallwerk F Ch Projectile gauge guide mechanism
GB789761A (en) * 1955-09-16 1958-01-29 Soc Tech De Rech Ind Improvements in projectile fuzes
FR2221707A1 (en) * 1973-03-14 1974-10-11 France Etat

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US20110186678A1 (en) * 2008-02-07 2011-08-04 Sankovic John R Pyrotechnic fin deployment and retention mechanism
US8183508B1 (en) * 2008-02-07 2012-05-22 Simmonds Precision Products, Inc. Pyrotechnic fin deployment and retention mechanism
US8338769B1 (en) * 2008-02-07 2012-12-25 Simmonds Precision Products, Inc. Pyrotechnic fin deployment and retention mechanism
US8610042B2 (en) * 2008-02-07 2013-12-17 Simmonds Precision Products, Inc. Pyrotechnic fin deployment and retention mechanism
EP2259006A1 (en) * 2009-06-05 2010-12-08 Tda Armements S.A.S. Opening and locking system for an empennage of a munition
FR2946423A1 (en) * 2009-06-05 2010-12-10 Tda Armements Sas DEVICE FOR OPENING AND LOCKING A MUNITION STACK
US8563911B2 (en) 2009-06-05 2013-10-22 Tda Armements Sas Device for opening and locking a tail unit for ammunition
EP2748557A2 (en) * 2011-08-26 2014-07-02 BAE Systems Apparatus for deploying stowed control surfaces of a projectile
EP2748557A4 (en) * 2011-08-26 2015-04-29 Bae Systems Apparatus for deploying stowed control surfaces of a projectile
EP2620738A1 (en) * 2012-01-27 2013-07-31 Tda Armements S.A.S. Steering section for guided munition
FR2986319A1 (en) * 2012-01-27 2013-08-02 Tda Armements Sas PILOTAGE TRUNK FOR GUIDED MUNITION
US8890043B2 (en) 2012-01-27 2014-11-18 Tda Armements Steering section for guided munition

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IL91102A0 (en) 1990-03-19
EP0354088B1 (en) 1992-07-15
ATE78334T1 (en) 1992-08-15
FR2635178B1 (en) 1990-10-12
CA1334908C (en) 1995-03-28
FR2635178A1 (en) 1990-02-09
DE68902108D1 (en) 1992-08-20
DE68902108T2 (en) 1993-01-14
IL91102A (en) 1992-06-21

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