EP0123593A1 - 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
EP0123593A1
EP0123593A1 EP84400675A EP84400675A EP0123593A1 EP 0123593 A1 EP0123593 A1 EP 0123593A1 EP 84400675 A EP84400675 A EP 84400675A EP 84400675 A EP84400675 A EP 84400675A EP 0123593 A1 EP0123593 A1 EP 0123593A1
Authority
EP
European Patent Office
Prior art keywords
projectile
converter
charge
ignition
propellant charge
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
EP84400675A
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English (en)
French (fr)
Other versions
EP0123593B1 (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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seat Bourges SA filed Critical Seat Bourges SA
Publication of EP0123593A1 publication Critical patent/EP0123593A1/de
Application granted granted Critical
Publication of EP0123593B1 publication Critical patent/EP0123593B1/de
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
    • 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.
  • a much more advantageous solution (patent application FR 80 01420) consists in transferring the required energy and in programming the projectile, immediately before firing, from light emitting organs carried by the weapon.
  • this solution has the disadvantage of adding a step before firing and considerably complicating the weapon.
  • the invention aims to provide a projectile containing an electrically activatable charge which better meets those previously known to the requirements of practice, in particular in that it does not contain an electrochemical source, does not involve an additional step between introduction of the projectile into 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 light flux to the converter will be constituted by a consumable flash lamp, carried by the projectile, provided with triggering means in response to the kick start.
  • 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 to the photoelectric converter in response to the ignition of the charge. of projectile propulsion.
  • the light flux applied to a photoelectric converter 10 is provided by a combustion flash 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 converter. Placed on the other side.
  • the light energy thus transferred in a period of approximately 10 ms, in the range of wavelengths less than 1000 X for which the converter 10 is sensitive, makes it possible to obtain without difficulty the electrical energy, of several tens of mJ, required to perform the firing of the load and for supplying low power electronic modules, ensuring for example a chronometry function.
  • the photoelectric converter 10 supplies a storage capacitor 16 through a non-return diode 18.
  • a dry tantalum capacitor will generally be used, which tolerates a temperature range from -55 ° C. to approximately 155 ° C. The capacity of this capacitor will be chosen according to the supply voltage and the energy to be stored.
  • a 1000p F capacitor, associated with a converter providing 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. can be 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 the resistance to accelerations, constitutes an autonomous block insertable in the ammunition.
  • the circuit shown by way of example in FIG. 1 comprises means allowing automatic reset to zero of electronic circuits equipping the projectile.
  • These means include an AND-NO 20 port 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 ⁇ F for example) and the other branch comprises, in parallel. a resistance 24 for slow charging of the capacitor 22 (1 MOhm for example) and a diode 26 reverse biased 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 start of the charging and once the latter is completed.
  • FIG. 2 shows a layout that provides the required security.
  • the bulb of the lamp 12 is broken by striking 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 bottom 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 tail receives the shock of the piston 38 when the latter is thrown after the pin shears.
  • the variant embodiment shown in Figure 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 charging of the capacitor. 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.
  • Still other solutions are possible, for example using a conventional striker to put the flash lamp to the atmosphere. This solution is particularly usable on shells where the acceleration at the start exceeds 10,000 g. .
  • Yet another solution consists in placing the queusot on a flue gas evacuation channel at very high temperature (exceeding 1000 ° C). During the firing, the violent jet of gas at very high temperature breaks the bulb.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
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 true EP0123593A1 (de) 1984-10-31
EP0123593B1 EP0123593B1 (de) 1987-01-07

Family

ID=9287615

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)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2608267A1 (fr) * 1986-12-11 1988-06-17 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
AU602398B2 (en) * 1988-02-25 1990-10-11 Cxa Ltd./Cxa Ltee Initiating system for firing a detanator

Families Citing this family (2)

* 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
EP0295185B1 (de) * 1987-06-10 1991-08-14 Seat Bourges Geschoss mit elektrisch aktivierter Ladung und elektronischem Verzögerer

Citations (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

Patent Citations (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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2608267A1 (fr) * 1986-12-11 1988-06-17 Seat Bourges Sa Munition programmable par voie optique et systeme d'arme en comportant application
GB2198815A (en) * 1986-12-11 1988-06-22 Seat Bourges Sa Optically programmable projectile and weapon system
GB2198815B (en) * 1986-12-11 1990-04-18 Seat Bourges Sa Optically programmable projectile and weapon system
GB2218189A (en) * 1987-05-30 1989-11-08 Graviner Ltd Impact detection
AU602398B2 (en) * 1988-02-25 1990-10-11 Cxa Ltd./Cxa Ltee Initiating system for firing a detanator

Also Published As

Publication number Publication date
EP0123593B1 (de) 1987-01-07
FR2544069B1 (fr) 1985-10-04
FR2544069A1 (fr) 1984-10-12
DE3461952D1 (en) 1987-02-12

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