EP0123593B1 - Geschoss mit elektrisch zündbarer Ladung sowie dazugehörige Abschussvorrichtung - Google Patents

Geschoss mit elektrisch zündbarer Ladung sowie dazugehörige Abschussvorrichtung Download PDF

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Publication number
EP0123593B1
EP0123593B1 EP19840400675 EP84400675A EP0123593B1 EP 0123593 B1 EP0123593 B1 EP 0123593B1 EP 19840400675 EP19840400675 EP 19840400675 EP 84400675 A EP84400675 A EP 84400675A EP 0123593 B1 EP0123593 B1 EP 0123593B1
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EP
European Patent Office
Prior art keywords
missile
converter
propellant charge
projectile
flash lamp
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.)
Expired
Application number
EP19840400675
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English (en)
French (fr)
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EP0123593A1 (de
Inventor
Philippe Amberny
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.)
Seat Bourges SA
Original Assignee
Seat Bourges SA
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Filing date
Publication date
Application filed by Seat Bourges SA filed Critical Seat Bourges SA
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    • 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 containing a charge that can be activated electrically during their flight, which requires an on-board source and, in particular, those whose characteristics exclude or make undesirable the generation of electricity from kinetic energy.
  • a charge that can be activated electrically during their flight, which requires an on-board source and, in particular, those whose characteristics exclude or make undesirable the generation of electricity from kinetic energy.
  • the invention aims to provide a projectile containing an electrically activatable charge which responds better than those previously known to the requirements of practice, in particular in that it does not contain an electrochemical source, does not imply an additional step between the production of the projectile the location of the firing and firing of the propellant charge, and does not significantly complicate the weapon.
  • the invention proposes in particular a projectile containing an electrically activatable charge, comprising an on-board photoelectric converter, connected to an electric energy storage accumulator, characterized in that the converter is placed so as to be subjected to a flux intense light in response to ignition of the projectile propellant charge.
  • the means for applying the intense luminous flux to the converter will consist of a consumable flash lamp, carried by the projectile, provided with triggering means in response to the start of the shot.
  • a first possibility consists in triggering the flash lamp by the means which also ensure the ignition of the propellant charge.
  • This solution has the disadvantage of charging the capacitor capable of activating the military charge even in the event of failure to ignite the propellant charge.
  • Another, more advantageous possibility consists in triggering the flash lamp only in response to the effective start of the blow. This result can be achieved by using means sensitive to the pressure caused by the effective firing of the propellant charge, in particular in a barrel, by the displacement of the ammunition in the barrel of the weapon, by linear acceleration or to which the projectile is subjected. This increased security will often eliminate the traditional pyrotechnic alignment chain, which is a delicate and expensive mechanism.
  • the intense luminous flux will be caused by the very glow of combustion of the propellant charge.
  • This solution is particularly advantageous in the case of projectiles comprising a main or additional propelling charge driven by the projectile out of the launch tube.
  • the invention also provides a weapon system comprising a projectile of the kind defined above and a weapon with which the tube is equipped so as to cause the application of intense light flux or photoelectric converter in response to the ignition of the charge. of projectile propulsion.
  • the light flux applied to a photoelectric converter 10 is supplied by a flash combustion lamp 12.
  • the lamp 12 can be constituted by a transparent bulb containing magnesium in filaments, provided a queusot 14. Such a constitution is commonly used on cameras.
  • the lightning is triggered by striking the socket 14 to cause the entry of air into the bulb 12.
  • the magnesium of such a bulb has an extremely short burning time, about 10 ms.
  • the optical coupling between the photoelectric converter 10 and the bulb must be as high as possible, so as to have a conversion efficiency as high as possible.
  • a simple solution consists in constituting the converter 10 of several photovoltaic cells attached and surrounding the lamp 12. An additional advantage of this arrangement is that one can increase the electromotive force provided by the converter by putting the cells in series. We can frequently use six photovoltaic cells of height corresponding to that of the lamp 12, placed in series.
  • Another solution consists in silvering one of the faces of the lamp to return the luminous flux towards the conver weaver placed on the other side.
  • the light energy thus transferred in a period of approximately 10 ms, in the wavelength range of less than 1000 ⁇ for which the converter 10 is sensitive, makes it possible to easily obtain electrical energy, of several tens of mJ, required to ignite the load and to power low-power electronic modules, for example providing a timing function.
  • the photoelectric converter 10 supplies a storage capacitor 16 through a non-return diode 18.
  • a dry tantalum capacitor which tolerates a temperature range from -55 ° C. to 55 ° C. approximately.
  • the capacity of this capacitor will be chosen according to the supply voltage and the energy to be stored.
  • a 1000 wF capacitor, associated with a converter supplying a voltage of 5 to 6 V, will generally be satisfactory. It can be produced in the form of a cylinder 20 mm high and 7 mm in diameter, capable of being mounted on an interconnection plate at the same time as the flash lamp and the converter.
  • Such an assembly possibly coated in a resin to increase resistance to acceleration, constitutes an autonomous block insertable into the munition.
  • the circuit shown by way of example in FIG. 1 includes means allowing automatic reset to zero of electronic circuits equipping the projectile.
  • These means include an AND-NO gate 20 with two inputs. One of the inputs is connected to the electrode of the storage capacitor 16 brought to the voltage + V of the power supply. The other input is connected to the midpoint of a bridge connecting the two electrodes of the capacitor 16.
  • One of the branches of this bridge comprises a capacitor 22 of low capacity (0.22 gF for example) and the other branch comprises, in parallel, a slow charge resistor 24 of the capacitor 22 (1 MOhm for example) and a reverse biased diode 26 during charging.
  • the AND-NO gate 22 receives different polarities on its two inputs at the start of the charging of the capacitor 22, equal polarities before the charging starts and once the charging is completed.
  • FIG. 2 shows an arrangement that provides the required security.
  • the bulb of the lamp 12 is broken against a striker 30 on the shank 14 when the projectile leaves its launching tube 32.
  • the striker 30 is constituted by a lever that a spring 34 tends to project towards the pipe which is retained by a pin 36 before loading, by the tube 32 when the ammunition is engaged.
  • the pin 36 can be extractable or ejectable.
  • a simpler solution consists in immobilizing the piston 38 in its bore by a shearable pin and in placing the flash lamp 12 so that its socket receives the shock of the piston 38 when the latter is projected after the pin shears.
  • the variant embodiment shown in FIG. 3, where the elements corresponding to those already described are designated by the same reference number, comprises a flap of pyrotechnic alignment chain which, at the same time as its other functions, causes the capacitor to be charged. of storage.
  • This flap can for example be actuated by centrifugal force, in the case of projectiles stabilized by rotation.
  • the flap 46 has a slot 48 which the centrifugal force brings in front of the striker 30 to release the latter.

Landscapes

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

Claims (9)

1. Geschoss mit einer elektrisch zündbaren Ladung, mit einem fotoelektrischen Wandler (10), der mit einem Speicher (16) zur Speicherung elektrischer Energie verbunden ist, wobei diese derart angeordnet sind, dass sie einem von einer Quelle ausgehenden Lichtstrom unterwerfbar sind, dadurch gekennzeichnet, dass die Quelle vom Geschoss getragen und als Reaktion auf die Zündung der Treibladung des Geschosses aktiviert wird.
2. Geschoss nach Anspruch 1, dadurch gekennzeichnet, dass die Quelle eine Einmalblitzlichtbirne (12) ist, die vom Geschoss getragen wird, versehen mit Auslöseelementen als Reaktion auf die Zündung der Treibladung des Geschosses.
3. Geschoss nach Anspruch 2, gekennzeichnet durch Mittel zur Auslösung der Blitzlichtbirne (12) durch diejenigen Mittel, die in gleicherweise die Zündung der Treibladung des Geschosses sicherstellen.
4. Geschoss nach Anspruch 2, dadurch gekennzeichnet, dass die Auslösemittel Mittel sind, die gegenüber dem Druck empfindlich sind, der durch das effektive Inbrandsetzen der Treibladung, durch die Ortsveränderung der Munition in dem Geschützrohr oder durch eine lineare oder zentrifugale Beschleunigung der das Geschoss unterworfen ist, hervorgerufen wird.
5. Geschoss nach Anspruch 4, dadurch gekennzeichnet, dass die Auslösemittel einen Schlagbolzen (30) aufweisen, derart gestaltet, um auf ein Element der Blitzlichtbirne (12) geschleudert zu werden, um letztere zu zerstören und die Entzündung des leichtentzündlichen Materials, welche letztere enthält, hervorzurufen.
6. Geschoss nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass der Wandler (10) die Blitzlichtbirne (12) umgibt.
7. Geschoss nach Anspruch 1, dadurch gekennzeichnet, dass der Wandler (10) in der Weise angeordnet ist, dass er den intensiven Lichtblitz empfangen kann, der durch den Brennfunken der Treibladung hervorgerufen wird.
8. Geschoss nach Anspruch 7, dadurch gekennzeichnet, dass der Wandler (10) von einer transparenten Umhüllung aus Glas oder Harz umgeben ist.
9. Geschoss nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Energiespeicher (16) ein trockener Tantalkondensator ist und der Wandler (10) eine Mehrzahl von in Serie geschalteten fotoelektrischen Zellen trägt.
EP19840400675 1983-04-07 1984-04-05 Geschoss mit elektrisch zündbarer Ladung sowie dazugehörige Abschussvorrichtung Expired EP0123593B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8305698 1983-04-07
FR8305698A FR2544069B1 (fr) 1983-04-07 1983-04-07 Projectile contenant une charge activable electriquement et systeme d'arme mettant en oeuvre un tel projectile

Publications (2)

Publication Number Publication Date
EP0123593A1 EP0123593A1 (de) 1984-10-31
EP0123593B1 true EP0123593B1 (de) 1987-01-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840400675 Expired EP0123593B1 (de) 1983-04-07 1984-04-05 Geschoss mit elektrisch zündbarer Ladung sowie dazugehörige Abschussvorrichtung

Country Status (3)

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EP (1) EP0123593B1 (de)
DE (1) DE3461952D1 (de)
FR (1) FR2544069B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2616532B2 (fr) * 1983-04-07 1989-10-27 Seat Bourges Sa Projectile contenant une charge activable electriquement, a retardateur electronique
FR2608267B1 (fr) * 1986-12-11 1992-12-31 Seat Bourges Sa Munition programmable par voie optique et systeme d'arme en comportant application
GB2218189A (en) * 1987-05-30 1989-11-08 Graviner Ltd Impact detection
EP0295185B1 (de) * 1987-06-10 1991-08-14 Seat Bourges Geschoss mit elektrisch aktivierter Ladung und elektronischem Verzögerer
CA1326068C (en) * 1988-02-25 1994-01-11 James Robert Simon Detonator firing system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474155A1 (fr) * 1980-01-23 1981-07-24 Sedat Dispositif de programmation et projectile pour systeme d'arme
US4318342A (en) * 1980-01-25 1982-03-09 Aai Corporation Ammunition with surface-mounted light-settable pickup arrangement for digital memory storage

Also Published As

Publication number Publication date
EP0123593A1 (de) 1984-10-31
FR2544069B1 (fr) 1985-10-04
FR2544069A1 (fr) 1984-10-12
DE3461952D1 (en) 1987-02-12

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