EP0121494A1 - Armour-piercing projectile fuze - Google Patents

Armour-piercing projectile fuze Download PDF

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Publication number
EP0121494A1
EP0121494A1 EP84810098A EP84810098A EP0121494A1 EP 0121494 A1 EP0121494 A1 EP 0121494A1 EP 84810098 A EP84810098 A EP 84810098A EP 84810098 A EP84810098 A EP 84810098A EP 0121494 A1 EP0121494 A1 EP 0121494A1
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EP
European Patent Office
Prior art keywords
rocket
primer
moving part
firing
positions
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
EP84810098A
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German (de)
French (fr)
Other versions
EP0121494B1 (en
Inventor
Jean-Pierre Golay
Denis Jaunin
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.)
Mefina SA
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Mefina SA
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Filing date
Publication date
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Priority to AT84810098T priority Critical patent/ATE27488T1/en
Publication of EP0121494A1 publication Critical patent/EP0121494A1/en
Application granted granted Critical
Publication of EP0121494B1 publication Critical patent/EP0121494B1/en
Expired legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/14—Double fuzes; Multiple fuzes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes
    • F42C11/02—Electric fuzes with piezo-crystal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/18—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved
    • F42C15/188—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved using a rotatable carrier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/02—Fuze bodies; Fuze housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/06—Electric contact parts specially adapted for use with electric fuzes

Definitions

  • a projectile When it is desired that a projectile is capable of destroying a target made of hard material, for example a concrete fort or an armored vehicle, it must be provided with a piercing head capable of penetrating the hard material and protecting the percussion and firing device for the projectile. Indeed, the projectile must be equipped with a rocket producing a delayed firing so that the explosion does not occur until after the penetration of the projectile into the goal. Instant firing would do little damage to an armored goal.
  • Electric firing by a voltage pulse supplied by a piezoelectric generator is known, for example from German patent 25,58,836.
  • the object of the present invention is to improve a rocket of the aforementioned kind and to allow efficient construction, less bulky, lighter and less expensive than known constructions.
  • the subject of the present invention is a rocket with a piercing head for a projectile, comprising an electric firing device and means for delaying firing, this device and these means being placed inside or in back of a perforation piece of material to high resistance, characterized in that it comprises a piezoelectric generator intended to be actuated on impact to supply the electrical firing energy, this generator being disposed in front of the perforation piece and electrically connected to the firing device.
  • the rocket shown comprises an annular part 1, fixed by crimping on a protective part 2 having an external thread 3 making it possible to fix the assembly on the body, not shown, of a projectile.
  • the annular part 1 surrounds an electrical firing device, comprising a striker 5 disposed in a cap 4 and intended to strike a hammer 6, against the action of a spring 7 at the time of impact.
  • the shock produced on the hammer 6 is applied to a piezoelectric element 8, which provides an electrical voltage peak under the effect of the shock.
  • This piezoelectric element rests on the front face of the protective part 2, which constitutes an anvil and at the same time an electrode at ground potential, while the hammer 6 constitutes the other electrode, which is connected via from a contact finger 10 to a step-down transformer 9.
  • the rocket also includes a timer mechanism 11, provided with a counterweight 12, movable at the start of the blow to band a spring.
  • the latter acts as a motor on a clockwork movement contained in the timer 11, a movement which is of known construction and which will therefore not be shown in detail.
  • a movement of this kind is moreover described in Swiss patent application 691 / 80-3.
  • the timer releases a stop member, constituted by a rod 13, sliding along an axis parallel to that of the rocket, this rod 13 being subjected to the action of a return spring 14 ( Figure 2).
  • the rod 13 constitutes a stop member for a movable part 15 in the form of a rotor pivotally mounted on a pin 16 and a pivot 17.
  • the pin 16 is secured to a spiral spring 18, the outer end of which is fixed to a bearing 19 of the rod 13, this bearing being carried by a disc 20.
  • This spring 18 biases the rotor 15 in a clockwise direction and this is retained in its rotation by the stop rod 13, which cooperates with a shoulder 21, provided on the periphery of the rotor to block it in the safety position.
  • the shoulder 21 is followed by a shoulder 22 which makes it possible to define a first active position of the rotor 15 by abutment against the rod 13. If the rod 13 is sufficiently displaced to release the shoulder 22, the rotor can turn further to reach a second active position.
  • the rotor 15 contains two electrical primers, only one of which is visible in FIGS. 1 and 2. These primers have different characteristics, one being intended for instantaneous firing and the other for delayed firing of the projectile. .
  • a pyrotechnic chain 25, 26, intended to communicate the firing of the explosive charge of the projectile.
  • the component 25 of the pyrotechnic chain is separated from the rotor 15 by a metal disc 27 and is located opposite an orifice 28, formed in this disc.
  • the contact for supplying tension to the primer 24 is constituted by a rod 29, subjected to the action of a spring 30 and cooperating with a contact blade 31 which touches the finger 32 for supplying tension to the primer 24.
  • the contact rod 30 is pressed against the disc 20 which is at ground potential, so that the ignition terminals of the primer 24 are short-circuited, which makes the device completely neutral with respect to induced voltages, for example by electromagnetic devices.
  • no primer is located opposite the hole 28, since it is the safety position.
  • the arrangement is the same for the other primer, which is not shown and which also has an elastic contact rod.
  • the stop rod 13 has moved upwards and the rotor 15 has rotated under the action of the spring 18 to bring the primer 24 opposite the hole 28.
  • the contact rod 29 has slipped under the disc 20 until it is opposite an opening 23 of the disc 20 which it crosses under the action of the spring 30 to come into contact with a current supply formed by a conductor 33, the latter is connected to the step-down transformer 9.
  • the voltage produced by the piezoelectric element is applied to the primer 24 passing through the finger 10, the transformer 9 , the conductor 33, the rod 29 and the blade 31.
  • the control of the selection of one or the other of the primers is carried out by acting on a rotary member 34 having a slotted head 35.
  • This member has an end 36 intended to limit the stroke of the stop rod 13. In the position illustrated in FIG. 3, the end 36 prevents any displacement of the rod 13 upwards, making it possible to release the shoulder 21 of the rotor 15. If the member 34 is rotated by half a turn, as illustrated in FIGS. Figures 1 and 2, the part 13 can slide to release the shoulder 21 and constitute a stop for the shoulder 22 to define a first stop position of the rotor 15. When the member 34 is only turned one quarter-turn, the end 36 is outside the path of the rod 13, so that its lower end is placed higher than the shoulder 22. The rotor 15 can then rotate until the contact rod 29 abuts against the end of a slot 38 extending the opening 23. In this position the contact rod of the other primer crosses the opening 23 after sliding under the disk 20.
  • the end 36 has a housing 39 opposite the rod 13, in which this rod would be housed in the event that it is accidentally released, so as to prevent any rotation of the member 34 and prohibit armament of the rocket.
  • the member 34 is of course placed in its selection position before the start of the shot, so that after the launch of the projectile and after the delay given by the timer mechanism 11, the rod 13 moves upwards, under the action of the spring 14 and occupies, according to the preselection, a stop or release position for the shoulder 22 of the rotor 15.
  • the other primer is short-circuited by its rod 29 which is either pressed against the plate 20, or in contact with this plate at the end of the slot 38.
  • the striker 5 and the hammer 6 act on the piezoelectric element to produce an ignition voltage which is transmitted almost instantaneously to the primer which has been selected.
  • the generator is then dislocated by the impact shock, but the firing device is protected by the shielding piece 2 while the latter acts as a piercing head when entering the goal. Firing then occurs normally.
  • the shielding part 2 no longer has a protective role to play, but it makes it possible to use only one model of projectile which is also suitable. both for instant ignition and for delayed ignition after penetration into a hard material.

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  • General Engineering & Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Toys (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Laminated Bodies (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Air Bags (AREA)
  • Fireproofing Substances (AREA)
  • Drilling And Boring (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Soft Magnetic Materials (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Stringed Musical Instruments (AREA)
  • Electric Clocks (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Fuses (AREA)

Abstract

The projectile fuse comprises a piezoelectric generator located forward of a piercing part (2) and formed by a striker (5), a hammer (6) and a crystal (8). The firing device comprises a watch movement (11) providing a muzzle safety and making possible the positioning of a rotary support (15) for at least one primer (24). A part (2) of material with high mechanical resistance acts as the piercing head for the projectile after the dislodging of the electric generator at the moment of impact and effectively protects the watch movement (11) and the rotary support (15).

Description

Lorsqu'on désire qu'un projectile soit capable de détruire un objectif en un matériau dur, par exemple un fortin en béton ou un véhicule blindé, on doit le munir d'une tête perforante capable de pénétrer dans le matériau dur et de protéger le dispositif de percussion et de mise à feu du projectile. En effet, le projectile doit être muni d'une fusée produisant une mise à feu retardée afin que l'explosion ne se produise qu'après la pénétration du projectile dans le but. Une mise à feu instantanée ne produirait guère de dégâts sur un but blindé.When it is desired that a projectile is capable of destroying a target made of hard material, for example a concrete fort or an armored vehicle, it must be provided with a piercing head capable of penetrating the hard material and protecting the percussion and firing device for the projectile. Indeed, the projectile must be equipped with a rocket producing a delayed firing so that the explosion does not occur until after the penetration of the projectile into the goal. Instant firing would do little damage to an armored goal.

Jusqu'à présent, toute la tête du projectile était enfermée dans une pièce de protection en un matériau à haute résistance mécanique, seul le percuteur étant éventuellement situé en avant de cette tête de protection. Une telle construction est lourde, en même temps que très coûteuse.Until now, the entire head of the projectile was enclosed in a protective part made of a material with high mechanical resistance, only the striker possibly being located in front of this protective head. Such a construction is heavy, at the same time as very expensive.

Le brevet USA 2.485.887, ainsi que le brevet français 2.219.396, montrent chacun une construction dans laquelle tout le dispositif de mise à feu est situé en arrière de la pièce de perforation, seul un contact de percussion étant disposé en avant de cette pièce.The US patent 2,485,887, as well as the French patent 2,219,396, each show a construction in which the entire firing device is located behind the perforation piece, only a percussion contact being disposed in front of this room.

La mise à feu électrique par une impulsion de tension fournie par un générateur piézo-électrique est connue, par exemple par le brevet allemand 25.58.836.Electric firing by a voltage pulse supplied by a piezoelectric generator is known, for example from German patent 25,58,836.

La présente invention a pour but d'améliorer une fusée du genre précité et de permettre une construction efficace, moins volumineuse, plus légère et moins coûteuse que les constructions connues.The object of the present invention is to improve a rocket of the aforementioned kind and to allow efficient construction, less bulky, lighter and less expensive than known constructions.

A cet effet, la présente invention a pour objet une fusée à tête perforante pour projectile, comprenant un dispositif électrique de mise à feu et des moyens de retardement de la mise à feu, ce dispositif et ces moyens étant placés à l'intérieur ou en arrière d'une pièce de perforation en matériau à haute résistance, caractérisée en ce qu'elle comprend un générateur piézo-électrique destiné à être actionné lors de l'impact pour fournir l'énergie électrique de mise à feu, ce générateur étant disposé en avant de la pièce de perforation et relié électriquement au dispositif de mise à feu.To this end, the subject of the present invention is a rocket with a piercing head for a projectile, comprising an electric firing device and means for delaying firing, this device and these means being placed inside or in back of a perforation piece of material to high resistance, characterized in that it comprises a piezoelectric generator intended to be actuated on impact to supply the electrical firing energy, this generator being disposed in front of the perforation piece and electrically connected to the firing device.

Le dessin annexé représente schématiquement et à titre d'exemple une forme d'exécution de la fusée, objet de l'invention.The accompanying drawing shows schematically and by way of example an embodiment of the rocket, object of the invention.

  • La figure 1 est une coupe axiale de cette forme d'exécution, montrant la position occupée par les différents éléments de la fusée, avant le départ du coup.Figure 1 is an axial section of this embodiment, showing the position occupied by the various elements of the rocket, before the start of the blow.
  • La figure 2 est une vue analogue à la figure 1, montrant la fusée en position armée, après le départ du coup.Figure 2 is a view similar to Figure 1, showing the rocket in the armed position, after the start of the shot.
  • La figure 3 est une, vue schématique en perspective avec des parties enlevées, montrant une partie du mécanisme retardateur et la pièce mobile.Figure 3 is a schematic perspective view with parts removed, showing part of the delay mechanism and the moving part.
  • La figure 4 montre un détail de la figure 3.Figure 4 shows a detail of Figure 3.

La fusée représentée comprend une pièce annulaire 1, fixée par sertissage sur une pièce de protection 2 présentant un filetage extérieur 3 permettant de fixer l'ensemble sur le corps, non représenté, d'un projectile.The rocket shown comprises an annular part 1, fixed by crimping on a protective part 2 having an external thread 3 making it possible to fix the assembly on the body, not shown, of a projectile.

La pièce annulaire 1 entoure un dispositif électrique de mise à feu, comprenant un percuteur 5 disposé dans une calotte 4 et destinée à venir frapper un marteau 6, contre l'action d'un ressort 7 au moment de l'impact. Le choc produit sur le marteau 6 est appliqué à un élément piézo-électrique 8, qui fournit une pointe de tension électrique sous l'effet du choc. Cet élément piézo-électrique repose sur la face avant de la pièce de protection 2, qui constitue une enclume et en même temps une électrode au potentiel de masse, tandis que le marteau 6 constitue l'autre électrode, qui est reliée par l'intermédiaire d'un doigt de contact 10 à un transformateur abaisseur de tension 9.The annular part 1 surrounds an electrical firing device, comprising a striker 5 disposed in a cap 4 and intended to strike a hammer 6, against the action of a spring 7 at the time of impact. The shock produced on the hammer 6 is applied to a piezoelectric element 8, which provides an electrical voltage peak under the effect of the shock. This piezoelectric element rests on the front face of the protective part 2, which constitutes an anvil and at the same time an electrode at ground potential, while the hammer 6 constitutes the other electrode, which is connected via from a contact finger 10 to a step-down transformer 9.

La fusée comprend encore un mécanisme temporisateur 11, muni d'une masselotte 12, déplaçable lors du départ du coup pour bander un ressort. Ce dernier agit en tant que moteur sur un mouvement d'horlogerie contenu dans le temporisateur 11, mouvement qui est de construction connue et qui ne sera donc pas représenté en détail. Un mouvement de ce genre est d'ailleurs décrit dans la demande de brevet suisse 691/80-3. Lorsque le temps défini par le mouvement d'horlogerie est écoulé, le temporisateur libère un organe de butée, constitué par une tige 13, coulissant suivant un axe parallèle à celui de la fusée, cette tige 13 étant soumise à l'action d'un ressort de rappel 14 (figure 2).The rocket also includes a timer mechanism 11, provided with a counterweight 12, movable at the start of the blow to band a spring. The latter acts as a motor on a clockwork movement contained in the timer 11, a movement which is of known construction and which will therefore not be shown in detail. A movement of this kind is moreover described in Swiss patent application 691 / 80-3. When the time defined by the clockwork movement has elapsed, the timer releases a stop member, constituted by a rod 13, sliding along an axis parallel to that of the rocket, this rod 13 being subjected to the action of a return spring 14 (Figure 2).

La tige 13 constitue un organe de butée pour une pièce mobile 15 en forme de rotor monté pivotant sur un tourillon 16 et un pivot 17.The rod 13 constitutes a stop member for a movable part 15 in the form of a rotor pivotally mounted on a pin 16 and a pivot 17.

Comme le montre la figure 3, le tourillon 16 est solidaire d'un ressort spiral 18, dont l'extrémité extérieure est fixée sur un palier 19 de la tige 13, ce palier étant porté par un disque 20. Ce ressort 18 sollicite le rotor 15 dans le sens des aiguilles d'une montre et celui-ci est retenu dans sa rotation par la tige de butée 13, qui coopère avec un épaulement 21, prévu sur le pourtour du rotor pour le bloquer en position de sécurité. L'épaulement 21 est suivi d'un épaulement 22 qui permet de définir une première position active du rotor 15 par butée contre la tige 13. Si la tige 13 est suffisamment déplacée pour dégager l'épaulement 22, le rotor peut tourner davantage pour atteindre une deuxième position active.As shown in Figure 3, the pin 16 is secured to a spiral spring 18, the outer end of which is fixed to a bearing 19 of the rod 13, this bearing being carried by a disc 20. This spring 18 biases the rotor 15 in a clockwise direction and this is retained in its rotation by the stop rod 13, which cooperates with a shoulder 21, provided on the periphery of the rotor to block it in the safety position. The shoulder 21 is followed by a shoulder 22 which makes it possible to define a first active position of the rotor 15 by abutment against the rod 13. If the rod 13 is sufficiently displaced to release the shoulder 22, the rotor can turn further to reach a second active position.

Le rotor 15 contient deux amorces électriques, dont une seule 24 est visible aux figures 1 et 2. Ces amorces présentent des caractéristiques différentes, l'une étant prévue pour une mise à feu instantanée et l'autre pour une mise à feu retardée du projectile. Au-dessous du rotor 15 se trouve une chaîne pyrotechnique 25, 26, destinée à communiquer la mise à feu à la charge explosive du projectile.The rotor 15 contains two electrical primers, only one of which is visible in FIGS. 1 and 2. These primers have different characteristics, one being intended for instantaneous firing and the other for delayed firing of the projectile. . Below the rotor 15 is a pyrotechnic chain 25, 26, intended to communicate the firing of the explosive charge of the projectile.

Le composant 25 de la chaîne pyrotechnique est séparé du rotor 15 par un disque métallique 27 et est situé en face d'un orifice 28, ménagé dans ce disque.The component 25 of the pyrotechnic chain is separated from the rotor 15 by a metal disc 27 and is located opposite an orifice 28, formed in this disc.

Le contact pour l'amenée de la tension à l'amorce 24 est constitué par une tige 29, soumise à l'action d'un ressort 30 et coopérant avec une lame de contact 31 qui touche le doigt 32 d'amenée de tension à l'amorce 24. Dans la position de la figure 1, la tige de contact 30 est appuyée contre le disque 20 qui est au potentiel de la masse, de sorte que les bornes d'allumage de l'amorce 24 sont court-circuitées, ce qui rend le dispositif tout à fait neutre par rapport à des tensions induites, par exemple par des appareils électromagnétiques. En outre, aucune amorce ne se trouve en regard du trou 28, puisqu'il s'agit de la position de sécurité. La disposition est la même pour l'autre amorce, qui n'est pas représentée et qui possède également une tige de contact élastique.The contact for supplying tension to the primer 24 is constituted by a rod 29, subjected to the action of a spring 30 and cooperating with a contact blade 31 which touches the finger 32 for supplying tension to the primer 24. In the position of FIG. 1, the contact rod 30 is pressed against the disc 20 which is at ground potential, so that the ignition terminals of the primer 24 are short-circuited, which makes the device completely neutral with respect to induced voltages, for example by electromagnetic devices. In addition, no primer is located opposite the hole 28, since it is the safety position. The arrangement is the same for the other primer, which is not shown and which also has an elastic contact rod.

Dans la position représentée à la figure 2, la tige de butée 13 s'est déplacée vers le haut et le rotor 15 a tourné sous l'action du ressort 18 pour amener l'amorce 24 en regard du trou 28. En même temps, la tige de contact 29 a glissé sous le disque 20 jusqu'au moment où elle se trouve en regard d'une ouverture 23 du disque 20 qu'elle traverse sous l'action du ressort 30 pour entrer en contact avec une amenée de courant constituée par un conducteur 33, ce dernier est relié au transformateur abaisseur de tension 9. Au moment de l'impact, la tension produite par l'élément piézo-électrique est appliquée à l'amorce 24 en passant par le doigt 10, le transformateur 9, le conducteur 33, la tige 29 et la lame 31.In the position shown in FIG. 2, the stop rod 13 has moved upwards and the rotor 15 has rotated under the action of the spring 18 to bring the primer 24 opposite the hole 28. At the same time, the contact rod 29 has slipped under the disc 20 until it is opposite an opening 23 of the disc 20 which it crosses under the action of the spring 30 to come into contact with a current supply formed by a conductor 33, the latter is connected to the step-down transformer 9. At the time of impact, the voltage produced by the piezoelectric element is applied to the primer 24 passing through the finger 10, the transformer 9 , the conductor 33, the rod 29 and the blade 31.

La commande de la sélection de l'une ou de l'autre des amorces est effectuée en agissant sur un organe 34 rotatif présentant une tête à fente 35. Cet organe présente une extrémité 36 destinée à limiter la course de la tige de butée 13. Dans la position illustrée à la figure 3, l'extrémité 36 empêche tout déplacement de la tige 13 vers le haut permettant de libérer l'épaulement 21 du rotor 15. Si on tourne l'organe 34 d'un demi tour, comme illustré aux figures 1 et 2, la pièce 13 peut coulisser pour libérer l'épaulement 21 et constituer une butée pour l'épaulement 22 pour définir une première position d'arrêt du rotor 15. Lorsque l'organe 34 n'est tourné que d'un quart de tour, l'extrémité 36 se trouve en dehors de la trajectoire de la tige 13, de sorte que son extrémité inférieure vient se placer plus haut que l'épaulement 22. Le rotor 15 peut alors tourner jusqu'à ce que la tige de contact 29 vienne buter contre l'extrémité d'une fente 38 prolongeant l'ouverture 23. Dans cette position la tige de contact de l'autre amorce traverse l'ouverture 23 après avoir glissé sous le'disque 20.The control of the selection of one or the other of the primers is carried out by acting on a rotary member 34 having a slotted head 35. This member has an end 36 intended to limit the stroke of the stop rod 13. In the position illustrated in FIG. 3, the end 36 prevents any displacement of the rod 13 upwards, making it possible to release the shoulder 21 of the rotor 15. If the member 34 is rotated by half a turn, as illustrated in FIGS. Figures 1 and 2, the part 13 can slide to release the shoulder 21 and constitute a stop for the shoulder 22 to define a first stop position of the rotor 15. When the member 34 is only turned one quarter-turn, the end 36 is outside the path of the rod 13, so that its lower end is placed higher than the shoulder 22. The rotor 15 can then rotate until the contact rod 29 abuts against the end of a slot 38 extending the opening 23. In this position the contact rod of the other primer crosses the opening 23 after sliding under the disk 20.

Comme le montre la figure 4, l'extrémité 36 présente un logement 39 en regard de la tige 13, dans lequel cette tige se logerait dans le cas où elle serait libérée accidentellement, de manière à empêcher toute rotation de l'organe 34 et interdire l'armement de la fusée.As shown in Figure 4, the end 36 has a housing 39 opposite the rod 13, in which this rod would be housed in the event that it is accidentally released, so as to prevent any rotation of the member 34 and prohibit armament of the rocket.

L'organe 34 est bien entendu placé dans sa position de sélection avant le départ du coup, de sorte qu'après le lancement du projectile et après le délai donné par le mécanisme temporisateur 11, la tige 13 se déplace vers le haut, sous l'action du ressort 14 et occupe, suivant la présélection, une position de butée ou de dégagement pour l'épaulement 22 du rotor 15.The member 34 is of course placed in its selection position before the start of the shot, so that after the launch of the projectile and after the delay given by the timer mechanism 11, the rod 13 moves upwards, under the action of the spring 14 and occupies, according to the preselection, a stop or release position for the shoulder 22 of the rotor 15.

Ce dernier tourne très rapidement sous l'action de son ressort 18, de sorte que le temps de mise en place de l'une ou de l'autre amorce reste pratiquement le même, quelle que soit l'amorce présélectionnée.The latter rotates very quickly under the action of its spring 18, so that the time for setting up one or the other primer remains practically the same, whatever the preselected primer.

On constate que quelle que soit l'amorce présélectionnée, l'autre amorce est court-circuitée par sa tige 29 qui est soit appuyée contre la platine 20, soit en contact avec cette platine à l'extrémité de la fente 38.It can be seen that whatever the preselected primer, the other primer is short-circuited by its rod 29 which is either pressed against the plate 20, or in contact with this plate at the end of the slot 38.

Lors de l'impact sur une cible dure, le percuteur 5 et le marteau 6 agissent sur l'élément piézo-électrique pour produire une tension d'allumage qui est transmise de façon quasi-instantanée à l'amorce qui a été sélectionnée. Le générateur est ensuite disloqué par le choc de l'impact, mais le dispositif de mise à feu est protégé par la pièce de blindage 2 pendant que celle-ci agit comme tête perforante en pénétrant dans le but. La mise à feu se produit ensuite normalement. Dans le cas où l'on a sélectionné l'amorce de mise à feu instantanée, la pièce de blindage 2 n'a plus de rôle de protection à jouer, mais elle permet de n'utiliser qu'un seul modèle de projectile convenant aussi bien pour l'allumage instantané que pour l'allumage retardé après pénétration dans un matériau dur.Upon impact on a hard target, the striker 5 and the hammer 6 act on the piezoelectric element to produce an ignition voltage which is transmitted almost instantaneously to the primer which has been selected. The generator is then dislocated by the impact shock, but the firing device is protected by the shielding piece 2 while the latter acts as a piercing head when entering the goal. Firing then occurs normally. In the case where the instantaneous firing primer has been selected, the shielding part 2 no longer has a protective role to play, but it makes it possible to use only one model of projectile which is also suitable. both for instant ignition and for delayed ignition after penetration into a hard material.

Claims (9)

I. Fusée à tête perforante pour projectile, comprenant un dispositif électrique de mise à feu et des moyens de retardement de la mise à feu, ce dispositif et ces moyens étant placés à l'intérieur ou en arrière d'une pièce de perforation en matériau à haute résistance, caractérisée en ce qu'elle comprend un générateur piézo-électrique destiné à être actionné lors de l'impact pour fournir l'énergie électrique de mise à feu, ce générateur étant disposé en avant de la pièce de perforation et relié électriquement au dispositif de mise à feu.I. Rocket with a piercing head for a projectile, comprising an electric firing device and means for delaying firing, this device and these means being placed inside or behind a perforation piece made of material high resistance, characterized in that it comprises a piezoelectric generator intended to be actuated on impact to supply the electrical firing energy, this generator being disposed in front of the perforation piece and electrically connected to the firing device. 2. Fusée selon la revendication 1, caractérisée en ce que le cristal piézo-électrique est disposé entre une portion plane de la face de la pièce de perforation et une pièce métallique mobile pour être poussée contre le cristal lors de l'impact.2. Rocket according to claim 1, characterized in that the piezoelectric crystal is disposed between a flat portion of the face of the perforation piece and a movable metal piece to be pushed against the crystal upon impact. 3. Fusée selon la revendication 2, caractérisée en ce que la tête du percuteur est maintenue écartée de la pièce métallique mobile par un élément élastique, de façon que lors de l'impact il vienne frapper cette pièce métallique mobile.3. Rocket according to claim 2, characterized in that the head of the striker is kept away from the movable metal part by an elastic element, so that upon impact it comes to strike this movable metal part. 4. Fusée selon la revendication 1, caractérisée en ce que le dispositif de mise à feu comprend deux amorces électriques présentant des caractéristiques différentes, ces amorces étant portées par une pièce mobile, soumise à une force de rappel et susceptible d'occuper trois positions, dont une de sécurité et deux positions actives, pour placer respectivement aucune amorce, ou la première, ou la seconde amorce en regard d'une charge explosive, un mécanisme retardateur mis en action par inertie lors du départ du coup assurant une temporisation du déplacement de la pièce mobile vers l'une des ses positions actives, un dispositif de sélection permettant de choisir la position active désirée, le mécanisme temporisateur étant muni d'au moins un organe de butée coopérant avec la pièce mobile et susceptible d'occuper trois positions, dont une de blocage de la pièce mobile dans sa position de sécurité, les deux autres positions de l'organe de butée permettant le déplacement de la pièce mobile dans l'une ou l'autre de ses positions actives, le dispositif de sélection présentant une surface d'arrêt pour limiter la course de l'organe de butée pour définir l'arrêt de la pièce mobile dans sa première position active.4. Rocket according to claim 1, characterized in that the firing device comprises two electric primers having different characteristics, these primers being carried by a moving part, subjected to a restoring force and capable of occupying three positions, including a safety and two active positions, to place respectively no primer, or the first, or the second primer opposite an explosive charge, a delay mechanism activated by inertia at the start of the shot ensuring a delay in the movement of the moving part towards one of its active positions, a selection device making it possible to choose the desired active position, the timer mechanism being provided with at least one stop member cooperating with the moving part and capable of occupying three positions, one of which locks the moving part in its safety position, both other positions of the stop member allowing the moving part to move into one or other of its active positions, the selection device having a stop surface to limit the stroke of the stop member to define the moving part stops in its first active position. 5. Fusée selon les revendications 2 et 4, caractérisée en ce que la pièce mobile est constituée par un support rotatif dont l'axe est parallèle à celui de la fusée, ce support tournant en face d'une platine métallique présentant une ouverture en regard d'un conducteur destiné à transmettre l'impulsion de mise à feu, chaque amorce présentant un contact à ressort prenant appui contre la platine, lorsque cette amorce est en position inactive, et traversant ladite ouverture en position active de l'amorce pour s'appuyer contre le conducteur, la platine étant électriquement reliée à une partie métallique de la pièce mobile qui constitue l'autre pôle d'amenée de courant auxdites amorces.5. Rocket according to claims 2 and 4, characterized in that the moving part is constituted by a rotary support whose axis is parallel to that of the rocket, this support rotating opposite a metal plate having an opening opposite a conductor intended to transmit the firing pulse, each primer having a spring contact bearing against the plate, when this primer is in the inactive position, and passing through said opening in the active position of the primer for press against the conductor, the plate being electrically connected to a metal part of the moving part which constitutes the other pole for supplying current to said primers. 6. Fusée selon la revendication 5, caractérisée en ce que l'ouverture de la platine est prolongée par une fente arquée dont le centre de courbure coïncide avec l'axe de rotation du support rotatif, cette fente permettant le passage du contact à ressort qui se trouve en regard de l'ouverture pour la première position active du support rotatif, ce contact à ressort venant buter contre l'extrémité de la fente pour définir la seconde position active du support rotatif dans laquelle le second contact à ressort est situé en regard de ladite ouverture.6. Rocket according to claim 5, characterized in that the opening of the plate is extended by an arcuate slot whose center of curvature coincides with the axis of rotation of the rotary support, this slot allowing the passage of the spring contact which is located opposite the opening for the first active position of the rotary support, this spring contact abuts against the end of the slot to define the second active position of the rotary support in which the second spring contact is located opposite of said opening. 7. Fusée selon la revendication 4, caractérisée en ce que le mécanisme temporisateur comprend une masselotte déplaçable par inertie lors du départ du coup pour bander un ressort agissant sur un mouvement d'horlogerie de temporisation, l'organe de butée étant soumis à l'action d'un ressort contre l'action duquel il est retenu par le mouvement d'horlogerie jusqu'à l'écoulement du temps de temporisation.7. Rocket according to claim 4, characterized in that the timer mechanism comprises a counterweight movable by inertia during the start of the blow to band a spring acting on a timing clock movement, the stop member being subjected to action of a spring against the action of which it is retained by the clockwork movement until the expiration of the time delay. 8. Fusée selon la revendication 7, caractérisée en ce que l'organe de butée est constitué par une tige coulissante d'axe parallèle à la fusée, le dispositif de sélection étant constitué par un doigt rotatif, orienté transversalement à l'axe de la fusée et présentant une partie susceptible d'être placée sur le chemin de ladite tige pour limiter la course de cette dernière.8. Rocket according to claim 7, characterized in that the stop member is constituted by a sliding rod with an axis parallel to the rocket, the selection device being constituted by a rotary finger, oriented transversely. to the axis of the rocket and having a part capable of being placed on the path of said rod to limit the stroke of the latter. 9. Fusée selon la revendication 8, caractérisée en ce que le dispositif de sélection comprend un logement destiné à bloquer ledit dispositif en position de sécurité en cas de libération accidentelle de l'organe de butée empêchant la mise en position active des amorces.9. Rocket according to claim 8, characterized in that the selection device comprises a housing intended to block said device in the safety position in the event of accidental release of the abutment member preventing the priming of the primers.
EP84810098A 1983-03-07 1984-02-28 Armour-piercing projectile fuze Expired EP0121494B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84810098T ATE27488T1 (en) 1983-03-07 1984-02-28 ARMORED PROJECTION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1218/83A CH650330A5 (en) 1983-03-07 1983-03-07 ROCKET HEAD FOR PROJECTILE.
CH1218/83 1983-03-07

Publications (2)

Publication Number Publication Date
EP0121494A1 true EP0121494A1 (en) 1984-10-10
EP0121494B1 EP0121494B1 (en) 1987-05-27

Family

ID=4205254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84810098A Expired EP0121494B1 (en) 1983-03-07 1984-02-28 Armour-piercing projectile fuze

Country Status (9)

Country Link
US (1) US4606271A (en)
EP (1) EP0121494B1 (en)
AT (1) ATE27488T1 (en)
CA (1) CA1245506A (en)
CH (1) CH650330A5 (en)
DE (1) DE3463971D1 (en)
ES (1) ES530305A0 (en)
FI (1) FI77730C (en)
NO (1) NO163076C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550331A1 (en) * 1983-08-05 1985-02-08 Diehl Gmbh & Co SAFETY DEVICE FOR DETONATORY ROCKETS ACTING AT THE TIME OF THE IMPACT ON THE GROUND, PLACED IN A MUNITION TO BE DISPERSED
US4723087A (en) * 1985-09-09 1988-02-02 Raychem Ltd. Piezoelectric impact sensor
EP0709646A1 (en) * 1994-10-26 1996-05-01 Tda Armements S.A.S. Double safety impact fuse
GB2332733A (en) * 1988-10-05 1999-06-30 Diehl Gmbh & Co Warhead triggering mechanism with a time delay after impact

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH664010A5 (en) * 1985-07-12 1988-01-29 Mefina Sa ROCKET FOR PROJECTILE.
EP1597534B1 (en) 2003-02-27 2007-10-10 SN Technologies S.A. Projectile fuze

Citations (8)

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US2485887A (en) * 1944-04-06 1949-10-25 Us Navy Projectile
LU60039A1 (en) * 1968-12-19 1970-03-18
DE2206646A1 (en) * 1971-02-11 1972-08-24 Societe E. Lacroix, Muret (Frankreich) Ignition arrangement
FR2126571A5 (en) * 1971-02-11 1972-10-06 Lacroix
DE2312793A1 (en) * 1973-03-15 1974-09-19 Dynamit Nobel Ag PIEZOELECTRIC IGNITER, ESPECIALLY FOR BULLETS
FR2219396A1 (en) * 1973-02-23 1974-09-20 Messerschmitt Boelkow Blohm
DE2533585A1 (en) * 1975-07-26 1977-02-10 Messerschmitt Boelkow Blohm Warhead for fighting large naval targets - has penetrating primary projectile and secondary projectiles ejected from warhead
EP0098640A1 (en) * 1982-06-29 1984-01-18 Mefina S.A. Projectile fuze firing means

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US2129692A (en) * 1937-10-01 1938-09-13 Edwin J Hottinger Fuse
US2789508A (en) * 1953-02-18 1957-04-23 Rove Gene Safety and arming mechanism
NL124444C (en) * 1960-07-21
US3967556A (en) * 1975-03-31 1976-07-06 The United States Of America As Represented By The Secretary Of The Army Pneumatic fuze for safing and arming missiles

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Publication number Priority date Publication date Assignee Title
US2485887A (en) * 1944-04-06 1949-10-25 Us Navy Projectile
LU60039A1 (en) * 1968-12-19 1970-03-18
DE2206646A1 (en) * 1971-02-11 1972-08-24 Societe E. Lacroix, Muret (Frankreich) Ignition arrangement
FR2126571A5 (en) * 1971-02-11 1972-10-06 Lacroix
FR2219396A1 (en) * 1973-02-23 1974-09-20 Messerschmitt Boelkow Blohm
DE2312793A1 (en) * 1973-03-15 1974-09-19 Dynamit Nobel Ag PIEZOELECTRIC IGNITER, ESPECIALLY FOR BULLETS
DE2533585A1 (en) * 1975-07-26 1977-02-10 Messerschmitt Boelkow Blohm Warhead for fighting large naval targets - has penetrating primary projectile and secondary projectiles ejected from warhead
EP0098640A1 (en) * 1982-06-29 1984-01-18 Mefina S.A. Projectile fuze firing means

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550331A1 (en) * 1983-08-05 1985-02-08 Diehl Gmbh & Co SAFETY DEVICE FOR DETONATORY ROCKETS ACTING AT THE TIME OF THE IMPACT ON THE GROUND, PLACED IN A MUNITION TO BE DISPERSED
US4723087A (en) * 1985-09-09 1988-02-02 Raychem Ltd. Piezoelectric impact sensor
GB2332733A (en) * 1988-10-05 1999-06-30 Diehl Gmbh & Co Warhead triggering mechanism with a time delay after impact
GB2332733B (en) * 1988-10-05 1999-10-20 Diehl Gmbh & Co An anti-shelter projectile-warhead triggering mechanism for detonating an anti-shelter projectile
US6053109A (en) * 1988-10-05 2000-04-25 Diehl Stiftung & Co. Triggering arrangement for the priming of an anti-shelter projectile
EP0709646A1 (en) * 1994-10-26 1996-05-01 Tda Armements S.A.S. Double safety impact fuse
FR2726359A1 (en) * 1994-10-26 1996-05-03 Thomson Brandt Armements DOUBLE SAFETY IMPACT FUSEE

Also Published As

Publication number Publication date
NO840817L (en) 1984-09-10
CA1245506A (en) 1988-11-29
FI840894A (en) 1984-09-08
FI77730B (en) 1988-12-30
ES8503220A1 (en) 1985-02-16
CH650330A5 (en) 1985-07-15
FI840894A0 (en) 1984-03-06
ES530305A0 (en) 1985-02-16
DE3463971D1 (en) 1987-07-02
EP0121494B1 (en) 1987-05-27
NO163076C (en) 1990-03-28
NO163076B (en) 1989-12-18
US4606271A (en) 1986-08-19
FI77730C (en) 1989-04-10
ATE27488T1 (en) 1987-06-15

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