EP0295185B1 - Projectile with electrically activated charge and electronic delay - Google Patents

Projectile with electrically activated charge and electronic delay Download PDF

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Publication number
EP0295185B1
EP0295185B1 EP19880401434 EP88401434A EP0295185B1 EP 0295185 B1 EP0295185 B1 EP 0295185B1 EP 19880401434 EP19880401434 EP 19880401434 EP 88401434 A EP88401434 A EP 88401434A EP 0295185 B1 EP0295185 B1 EP 0295185B1
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EP
European Patent Office
Prior art keywords
charge
projectile
box
ignition
projectile according
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Expired - Lifetime
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EP19880401434
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German (de)
French (fr)
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EP0295185A1 (en
Inventor
Philippe Amberny
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SEAT BOURGES
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SEAT BOURGES
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Priority claimed from FR8708068A external-priority patent/FR2616532B2/en
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Publication of EP0295185A1 publication Critical patent/EP0295185A1/en
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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes
    • F42C11/008—Power generation in electric fuzes
    • 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
    • F42C15/40—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically

Definitions

  • the invention relates to projectiles of the type containing an electrically activatable charge, having an electric source activated in response to the ignition of the propellant composition of the projectile, such as a photoelectric converter possibly connected to an electric energy accumulator and placed so as to be subjected to an intense luminous flux in response to the ignition of the propellant composition of the projectile.
  • an electric source activated in response to the ignition of the propellant composition of the projectile such as a photoelectric converter possibly connected to an electric energy accumulator and placed so as to be subjected to an intense luminous flux in response to the ignition of the propellant composition of the projectile.
  • Document FR-A-2544069 discloses a projectile of the type defined above in accordance with the preambles of claims 1 and 2. It describes in particular, by way of example, a projectile whose light energy source consists of the luminous flux of a consumable flash lamp carried by the projectile. The electrical energy from the conversion of light energy is used to power circuits and activate the projectile's unique explosive charge.
  • projectiles which contain a main military charge which must be activated with a determined delay relative to the firing of an auxiliary explosive charge, generally placed at the front of the projectile.
  • This arrangement is used in particular on target attack projectiles with active armor or with front protection.
  • the charge has a tandem constitution and consists of a front auxiliary charge intended to react the explosive coating of the active armor or to destroy the front protection and a main explosive charge which must be activated after a short delay and precisely determined in relation to the operation of the auxiliary load.
  • the invention aims to provide a projectile whose military charge comprises an electrically activatable charge with a delay determined relative to a trigger signal such as the explosion of an auxiliary charge, in which the above difficulties are eliminated.
  • the electrical source must meet the following condition: the time which elapses between its excitation and the moment when it supplies the required operating voltage must be very short, so that the delay circuit is able to function correctly at the shortest possible shooting distance.
  • the source may consist of a thermal battery, the minimum activation time of which is currently around 80 ms. This delay is sometimes excessive. Consequently, the invention also proposes, in claim 2, a projectile of the type defined above, the electrically activatable charge of which is provided with a delay circuit connected to a device for activating the main charge, circuit contained in a sealed shielded box which also contains the source of intense light flux, such as a flash lamp, the converter and possibly the storage accumulator, said circuit receiving a trigger signal via optical means passing through the housing.
  • the flash lamp can in particular be a conventional lamp, with a very short illumination duration, which makes the use of a storage capacitor essential.
  • Zirconium flash lamps can also be used, providing a longer illumination, around 5 ms and whose association with the converter constitutes a true pyroelectric generator. It is also possible to use a block of pyrotechnic lighting composition without gas, the combustion time of which can be extended without difficulty up to approximately 2 s, which makes it possible, in the case where the maximum duration of the course of the trajectory does not exceed 2 s, to dispense with an expensive storage capacitor.
  • the projectile shown in Figure 1 may constitute a shell or the head of a self-propelled vehicle. It comprises an envelope 10 in which are placed, from front to rear, an auxiliary load 12 which can be provided with a proximity rocket and an arming security device 14, then a buffer space, the main load 16 (hollow load or self-drawn load), the device 18 for arming the main load 16 and, finally, a delay module 20.
  • the retarder module 20 is connected by a light pipe 22 to the auxiliary load so that the ignition of the latter transmits an optical signal to the module 20.
  • the pipe can be constituted by a single optical fiber or several optical fibers, placed in bundles or distributed around the internal periphery of the enclosure for more security.
  • the retarder module can have the constitution shown in Figure 2.
  • the module comprises a housing 24 of circular shape, closed in leaktight manner by a cover 26 which carries the device 28 for activating the main load 16 through the arming security device 18.
  • the housing 24 and the cover 26 are made of a conductive material and of sufficient thickness to ensure effective shielding against electromagnetic radiation.
  • the housing and its cover may in particular be made of brass or of the alloy known as "Mumetal".
  • a support provided inside the housing 24 is provided to receive a printed circuit board 30 which carries the components necessary to ensure the chronometric delay function and an opto-electronic coupler making it possible to transform the glow transmitted by the optical fiber into a signal electric.
  • An energy storage capacitor 32 is carried by the cover 26 or the card. The face of the card opposite to that which carries the components is coated with cells photoelectric 34 constituting photoelectric converters and connected to capacitor 32.
  • timing circuit can be classic.
  • the light energy source consists of a magnesium flash lamp 36 having a piezoelectric or piezo-pyrotechnic socket 38 for triggering by shock.
  • This lamp is placed in the chamber delimited by the bottom of the housing 24 and the card 30. It is carried by elastic means, such as a spring leaf 40, which, at rest, keep it spaced from the bottom.
  • the module is placed so that the acceleration at the start of the shot causes an inertial displacement of the flash lamp 36 towards the bottom of the housing and the impact of the socket 38 against a knife 42 formed on the bottom.
  • the spring 40 is sufficiently stiff so that the short-term shocks occurring during the handling of the projectile do not risk causing the lamp 36 to ignite.
  • the acceleration projects the rod 38 towards the knife.
  • the voltage created by the piezoelectric effect turns on the flash lamp 36.
  • the electric energy supplied by the cells 34 charges the capacitor 32 through a non-return diode not shown (the assembly possibly being that described in the document FR- A-2544069).
  • the front auxiliary charge 12 is fired.
  • the glow of the explosion is brought, by the optical fiber 22, to the module 20 and is transformed into an electrical signal for starting the timing of the delay circuit, which can have any of the known constitutions.
  • the activation device 28 is ignited by transmission of the residual electrical energy, possibly stored by the capacitor 32.
  • the invention is susceptible of numerous variant embodiments within the framework defined by the content of the appended claims. It is even possible, when the functions fulfilled by the module are so complex that it is not possible to supply electrical energy by electro-optical conversion, to replace or supplement the flash lamp-photocell assembly. by a bootable battery or a thermal battery.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Description

L'invention concerne les projectiles du type contenant une charge électriquement activable, ayant une source électrique activée en réponse à l'allumage de la composition propulsive du projectile, telle qu'un convertisseur photo-électrique éventuellement relié à un accumulateur d'énergie électrique et placé de façon à être soumis à un flux lumineux intense en réponse à l'allumage de la composition propulsive du projectile.The invention relates to projectiles of the type containing an electrically activatable charge, having an electric source activated in response to the ignition of the propellant composition of the projectile, such as a photoelectric converter possibly connected to an electric energy accumulator and placed so as to be subjected to an intense luminous flux in response to the ignition of the propellant composition of the projectile.

Le document FR-A-2544069, fait connaître un projectile du type ci-dessus défini conforme aux préambules des revendications 1 et 2. Il décrit notamment, à titre d'exemple, un projectile dont la source d'énergie lumineuse est constituée par le flux lumineux d'une lampe éclair consommable portée par le projectile. L'énergie électrique provenant de la conversion de l'énergie lumineuse permet d'alimenter des circuits et d'activer la charge explosive unique du projectile.Document FR-A-2544069 discloses a projectile of the type defined above in accordance with the preambles of claims 1 and 2. It describes in particular, by way of example, a projectile whose light energy source consists of the luminous flux of a consumable flash lamp carried by the projectile. The electrical energy from the conversion of light energy is used to power circuits and activate the projectile's unique explosive charge.

On connaît par ailleurs des projectiles contenant une charge militaire principale qui doit être activée avec un retard déterminé par rapport à la mise à feu d'une charge explosive auxiliaire, généralement placée à l'avant du projectile. Cette disposition est notamment utilisée sur les projectiles d'attaque de cible à blindage actif ou présentant une protection avant. La charge a une constitution tandem et se compose d'une charge auxiliaire avant destinée à faire réagir le révêtement explosif du blindage actif ou à détruire la protection avant et d'une charge explosive principale qui doit être activée au bout d'un délai court et déterminé avec précision par rapport au fonctionnement de la charge auxiliaire.In addition, projectiles are known which contain a main military charge which must be activated with a determined delay relative to the firing of an auxiliary explosive charge, generally placed at the front of the projectile. This arrangement is used in particular on target attack projectiles with active armor or with front protection. The charge has a tandem constitution and consists of a front auxiliary charge intended to react the explosive coating of the active armor or to destroy the front protection and a main explosive charge which must be activated after a short delay and precisely determined in relation to the operation of the auxiliary load.

A ce jour, on utilise des compositions pyrotechniques à retard, qui sont relativement peu précises, présentent une dérive dans le temps mal connue et ne permettent pas de régler le retard.To date, pyrotechnic compositions with delay are used, which are relatively imprecise, exhibit a drift over time that is poorly understood and do not allow the delay to be adjusted.

Contrairement aux compositions pyrotechniques à retard, les circuits électroniques permettent d'atteindre une grande précision et autorisent un réglage. Mais l'onde de détonation et les résidus provenant de l'explosion de la charge auxiliaire créent une forte ionisation et un champ électromagnétique élevé susceptible de perturber le fonctionnement des circuits électroniques. Il est possible de soustraire les circuits électroniques à ce genre d'action en les enfermant dans une enceinte étanche électriquement conductrice et constituant un blindage électromagnétique efficace pour les isoler et les soustraire aux champs électromagnétiques. Il a semblé jusqu'ici impossible de remplir ces conditions sur un projectile, du fait des liaisons électriques nécessaires pour transférer le signal d'origine du retard et pour assurer l'alimentation électrique des circuits.Unlike delay pyrotechnic compositions, electronic circuits allow high accuracy and allow adjustment. However, the detonation wave and the residues resulting from the explosion of the auxiliary charge create a strong ionization and a high electromagnetic field capable of disturbing the operation of the electronic circuits. It is possible to remove electronic circuits from this kind of action by enclosing them in an electrically conductive sealed enclosure and constituting an effective electromagnetic shielding to isolate them and remove them from electromagnetic fields. It seemed hitherto impossible to fulfill these conditions on a projectile, because of the electrical connections necessary to transfer the original signal of the delay and to ensure the electrical supply of the circuits.

L'invention vise à fournir un projectile dont la charge militaire comporte une charge activable électriquement avec un retard déterminé par rapport à un signal de déclenchement tel que l'explosion d'une charge auxiliaire, dans lequel les difficultés ci-dessus sont éliminées.The invention aims to provide a projectile whose military charge comprises an electrically activatable charge with a delay determined relative to a trigger signal such as the explosion of an auxiliary charge, in which the above difficulties are eliminated.

Dans ce but, il est proposé un projectile conforme à la revendication 1.For this purpose, a projectile according to claim 1 is proposed.

La source électrique doit répondre à la condition suivante: le délai qui s'écoule entre son excitation et l'instant où elle fournit la tension de fonctionnement requise doit être très bref, de façon que le circuit à retard soit à même de fonctionner correctement à la plus courte distance de tir envisagée. Dans certains cas, la source peut être constituée par une pile thermique, dont la durée minimale d'activation est à l'heure actuelle d'environ 80 ms. Ce délai est quelquefois excessif. En conséquence, l'invention propose également revendication 2 un projectile du type ci-dessus défini, dont la charge électriquement activable est munie d'un circuit à retard relié à un artifice d'activation de la charge principale, circuit contenu dans un boîtier étanche blindé qui contient également la source de flux lumineux intense, tel qu'une lampe éclair, le convertisseur et éventuellement l'accumulateur de stockage, ledit circuit recevant un signal de déclenchement par l'intermédiaire de moyens optiques traversant le boîtier.The electrical source must meet the following condition: the time which elapses between its excitation and the moment when it supplies the required operating voltage must be very short, so that the delay circuit is able to function correctly at the shortest possible shooting distance. In some cases, the source may consist of a thermal battery, the minimum activation time of which is currently around 80 ms. This delay is sometimes excessive. Consequently, the invention also proposes, in claim 2, a projectile of the type defined above, the electrically activatable charge of which is provided with a delay circuit connected to a device for activating the main charge, circuit contained in a sealed shielded box which also contains the source of intense light flux, such as a flash lamp, the converter and possibly the storage accumulator, said circuit receiving a trigger signal via optical means passing through the housing.

La lampe éclair peut notamment être une lampe classique, avec une durée d'illumination très faible, qui rend indispensable l'emploi d'un condensateur de stockage. On peut également utiliser des lampes éclair au zirconium, fournissant une illumination plus longue, d'environ 5 ms et dont l'association avec le convertisseur constitue un véritable générateur pyroélectrique. On peut également utiliser un bloc de composition pyrotechnique éclairante sans gaz, dont la durée de combustion peut être allongée sans difficulté jusqu'à 2 s environ, ce qui permet, dans le cas où la durée maximum de parcours de la trajectoire n'excède pas 2 s, de se dispenser d'un condensateur de stockage coûteux.The flash lamp can in particular be a conventional lamp, with a very short illumination duration, which makes the use of a storage capacitor essential. Zirconium flash lamps can also be used, providing a longer illumination, around 5 ms and whose association with the converter constitutes a true pyroelectric generator. It is also possible to use a block of pyrotechnic lighting composition without gas, the combustion time of which can be extended without difficulty up to approximately 2 s, which makes it possible, in the case where the maximum duration of the course of the trajectory does not exceed 2 s, to dispense with an expensive storage capacitor.

L'invention sera mieux comprise à la lecture de la description qui suit d'un mode particulier de réalisation, donné à titre d'exemple non limitatif. La description se réfère aux dessins qui l'accompagnent, dans lesquels:

  • ― la Figure 1 est une vue schématique, en élévation et en coupe partielle par un plan radial, montrant une disposition possible des charges dans un projectile à charge explosive tandem;
  • ― la Figure 2 est une vue de détail montrant une constitution possible d'un module d'activation mettant en oeuvre l'invention et pouvant être incorporé dans le projectile de la Figure 1.
The invention will be better understood on reading the following description of a particular embodiment, given by way of non-limiting example. The description refers to the accompanying drawings, in which:
  • - Figure 1 is a schematic view, in elevation and in partial section through a radial plane, showing a possible arrangement of the charges in a tandem explosive charge projectile;
  • - Figure 2 is a detail view showing a possible constitution of an activation module implementing the invention and which can be incorporated into the projectile of Figure 1.

Le projectile montré sur la Figure 1 peut constituer un obus ou la tête d'un engin autopropulsé. Il comporte une enveloppe 10 dans laquelle sont placés, de l'avant à l'arrière, une charge auxiliaire 12 pouvant être munie d'une fusée de proximité et d'un dispositif de sécurité d'armement 14, puis un espace tampon, la charge principale 16 (charge creuse ou charge autoforgée), le dispositif 18 de sécurité d'armement de la charge principale 16 et, enfin, un module retardateur 20.The projectile shown in Figure 1 may constitute a shell or the head of a self-propelled vehicle. It comprises an envelope 10 in which are placed, from front to rear, an auxiliary load 12 which can be provided with a proximity rocket and an arming security device 14, then a buffer space, the main load 16 (hollow load or self-drawn load), the device 18 for arming the main load 16 and, finally, a delay module 20.

Le module retardateur 20 est relié par un conduit de lumière 22 à la charge auxiliaire de façon que la mise à feu de cette dernière transmette un signal optique au module 20. Le conduit peut être constitué par une seule fibre optique ou plusieurs fibres optiques, placées en faisceau ou réparties sur le pourtour interne de l'enveloppe pour plus de sécurité.The retarder module 20 is connected by a light pipe 22 to the auxiliary load so that the ignition of the latter transmits an optical signal to the module 20. The pipe can be constituted by a single optical fiber or several optical fibers, placed in bundles or distributed around the internal periphery of the enclosure for more security.

Le module retardateur peut avoir la constitution montrée en Figure 2. Sur cette Figure, le module comprend un boîtier 24 de forme circulaire, fermé de façon étanche par un couvercle 26 qui porte l'artifice 28 d'activation de la charge principale 16 à travers le dispositif de sécurité d'armement 18. Le boîtier 24 et le couvercle 26 sont en un matériau conducteur et d'épaisseur suffisante pour assurer un blindage efficace contre le rayonnement électromagnétique. Le boîtier et son couvercle pourront notamment être en laiton ou en l'alliage connu sous le nom de "Mumétal".The retarder module can have the constitution shown in Figure 2. In this Figure, the module comprises a housing 24 of circular shape, closed in leaktight manner by a cover 26 which carries the device 28 for activating the main load 16 through the arming security device 18. The housing 24 and the cover 26 are made of a conductive material and of sufficient thickness to ensure effective shielding against electromagnetic radiation. The housing and its cover may in particular be made of brass or of the alloy known as "Mumetal".

Un appui prévu à l'intérieur du boîtier 24 est prévu pour recevoir une carte de circuit imprimé 30 qui porte les composants nécessaires pour assurer la fonction chronométrique de retard et un coupleur opto-électronique permettant de transformer la lueur transmise par la fibre optique en signal électrique. Un condensateur 32 de stockage d'énergie est porté par le couvercle 26 ou la carte. La face de la carte opposée à celle qui porte les composants est revêtue de cellules photo-électriques 34 constituant convertisseurs photo-électriques et reliées au condensateur 32.A support provided inside the housing 24 is provided to receive a printed circuit board 30 which carries the components necessary to ensure the chronometric delay function and an opto-electronic coupler making it possible to transform the glow transmitted by the optical fiber into a signal electric. An energy storage capacitor 32 is carried by the cover 26 or the card. The face of the card opposite to that which carries the components is coated with cells photoelectric 34 constituting photoelectric converters and connected to capacitor 32.

Du point de vue électrique, ce montage est comparable à celui du brevet FR 2554069 auquel on pourra se reporter. Le circuit chronométrique peut être classique.From the electrical point of view, this arrangement is comparable to that of patent FR 2554069 to which reference may be made. The timing circuit can be classic.

La source d'énergie lumineuse est constituée par une lampe éclair à magnésium 36 présentant un queusot piézo-électrique ou piézo-pyrotechnique 38 de déclenchement par choc. Cette lampe est placée dans la chambre délimitée par le fond du boîtier 24 et la carte 30. Elle est portée par des moyens élastiques, tels qu'une lame de ressort 40, qui, au repos, la maintiennent écartée du fond. Le module est placé de façon que l'accélération au départ du coup provoque un déplacement par inertie de la lampe éclair 36 vers le fond du boîtier et le choc du queusot 38 contre un couteau 42 ménagé sur le fond. Le ressort 40 est suffisamment raide pour que les chocs de courte durée intervenant lors de la manipulation du projectile ne risquent pas de provoquer l'allumage de la lampe 36.The light energy source consists of a magnesium flash lamp 36 having a piezoelectric or piezo-pyrotechnic socket 38 for triggering by shock. This lamp is placed in the chamber delimited by the bottom of the housing 24 and the card 30. It is carried by elastic means, such as a spring leaf 40, which, at rest, keep it spaced from the bottom. The module is placed so that the acceleration at the start of the shot causes an inertial displacement of the flash lamp 36 towards the bottom of the housing and the impact of the socket 38 against a knife 42 formed on the bottom. The spring 40 is sufficiently stiff so that the short-term shocks occurring during the handling of the projectile do not risk causing the lamp 36 to ignite.

Le fonctionnement du dispositif qui vient d'être décrit est le suivant: au départ du coup, l'accélération, d'une durée de quelques millisecondes, projette le queusot 38 vers le couteau. La tension créée par l'effet piézo-électrique allume la lampe éclair 36. L'énergie électrique fournie par les cellules 34 charge le condensateur 32 à travers une diode anti-retour non représentée (le montage pouvant être celui décrit dans le document FR-A-2544069).The operation of the device which has just been described is as follows: at the start of the stroke, the acceleration, lasting a few milliseconds, projects the rod 38 towards the knife. The voltage created by the piezoelectric effect turns on the flash lamp 36. The electric energy supplied by the cells 34 charges the capacitor 32 through a non-return diode not shown (the assembly possibly being that described in the document FR- A-2544069).

A l'impact ou à une distance de la cible fixée par une fusée de proximité non représentée, la charge auxiliaire avant 12 est mise à feu. La lueur de l'explosion est amenée, par la fibre optique 22, au module 20 et est transformée en un signal électrique de démarrage de la chronométrie du circuit à retard, qui peut avoir n'importe laquelle des constitutions connues. Au bout du retard, l'artifice d'activation 28 est mis à feu par transmission de l'énergie électrique résiduelle, éventuellement stockée par le condensateur 32.At impact or at a distance from the target fixed by a proximity rocket not shown, the front auxiliary charge 12 is fired. The glow of the explosion is brought, by the optical fiber 22, to the module 20 and is transformed into an electrical signal for starting the timing of the delay circuit, which can have any of the known constitutions. At the end of the delay, the activation device 28 is ignited by transmission of the residual electrical energy, possibly stored by the capacitor 32.

L'invention est susceptible de nombreuses variantes de réalisation dans le cadre défini par la teneur des revendications annexées. Il est même possible, lorsque les fonctions remplies par le module sont tellement complexes qu'il n'est pas possible de fournir l'énergie électrique par conversion électro-optique, de remplacer ou de compléter l'ensemble lampe éclair-cellules photo-électriques par une batterie amorçable ou une batterie thermique.The invention is susceptible of numerous variant embodiments within the framework defined by the content of the appended claims. It is even possible, when the functions fulfilled by the module are so complex that it is not possible to supply electrical energy by electro-optical conversion, to replace or supplement the flash lamp-photocell assembly. by a bootable battery or a thermal battery.

Claims (8)

1. A projectile containing an electrically activatable charge (16) having an electric source activated in response to ignition of the propulsive composition of the projectile, characterised in that the electrically activatable charge is provided with a delay circuit connected to a pyrotechnic composition (28) for activating the main charge, said circuit being contained in a screened sealed box (24) which also contains the electric source, said circuit receiving a triggering signal through the agency of optical means (22) extending through the box (24).
2. A projectile containing an electrically activatable charge (16), having a photoelectric converter (34), possibly connected to an electrical energy accumulator (32), so disposed as to experience an intense luminous flux in response to ignition of the propulsive composition of the projectile, characterised in that the electrically activatable charge is provided with a delay circuit connected to a pyrotechnic composition (28) for activating the main charge, said circuit being contained in a screened sealed box (24) which also contains the source of intense luminous flux (36), the converter and possibly the storage accumulator, said circuit receiving a triggering signal through the agency of optical means (22) extending through the box (24).
3. A projectile according to claim 2, characterised in that the said box (24) is made of a conductive acreening material such as brass or the alloy "Mumetal".
4. A projectile according to claim 2 or 3, characterised in that the optical means (22) are formed by one or more optical fibres.
5. A projectile according to claim 4, characterised in that the box contains a printed circuit board (30), one surface of which bears the delay circuit components and an opto-electronic coupler, and the other surface of which bears photoelectric cells (34) forming the converter.
6. A projectile according to any one of claims 2 to 5, characterised in that the luminous flux is provided by a flashlamp (36) disposed in said box and having an ignition deadhead (38).
7. A projectile according to claim 6, characterised in that the lamp is carried by a flexible strip (40) adapted to bend on acceleration on ignition of the propulsive charge and enable the deadhead (38) to strike a knife-edge (42) formed in the box.
8. A projectile according to any one of the preceding claims, characterised in that the said charge constitutes the main charge of a tandem explosive charge (16, 12) and in that the triggering signal is delivered by the explosion of an auxiliary front charge (12).
EP19880401434 1987-06-10 1988-06-10 Projectile with electrically activated charge and electronic delay Expired - Lifetime EP0295185B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8708068 1987-06-10
FR8708068A FR2616532B2 (en) 1983-04-07 1987-06-10 PROJECTILE CONTAINING AN ELECTRICALLY ACTIVABLE CHARGE, WITH ELECTRONIC DELAYER

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EP0295185A1 EP0295185A1 (en) 1988-12-14
EP0295185B1 true EP0295185B1 (en) 1991-08-14

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EP19880401434 Expired - Lifetime EP0295185B1 (en) 1987-06-10 1988-06-10 Projectile with electrically activated charge and electronic delay

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2544069B1 (en) * 1983-04-07 1985-10-04 Seat Bourges Sa PROJECTILE CONTAINING AN ELECTRICALLY ACTIVABLE CHARGE AND WEAPON SYSTEM IMPLEMENTING SUCH A PROJECTILE

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DE3864199D1 (en) 1991-09-19
EP0295185A1 (en) 1988-12-14

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