EP2327952A1 - Gefechtskopf mit Tandemhohlladung - Google Patents

Gefechtskopf mit Tandemhohlladung Download PDF

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Publication number
EP2327952A1
EP2327952A1 EP20100290614 EP10290614A EP2327952A1 EP 2327952 A1 EP2327952 A1 EP 2327952A1 EP 20100290614 EP20100290614 EP 20100290614 EP 10290614 A EP10290614 A EP 10290614A EP 2327952 A1 EP2327952 A1 EP 2327952A1
Authority
EP
European Patent Office
Prior art keywords
screen
load
cylindrical zone
interposed
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
EP20100290614
Other languages
English (en)
French (fr)
Other versions
EP2327952B1 (de
Inventor
Lionel Caillat
Nicolas Eches
Rémi Boulanger
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.)
Nexter Munitions SA
Original Assignee
Nexter Munitions 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 Nexter Munitions SA filed Critical Nexter Munitions SA
Publication of EP2327952A1 publication Critical patent/EP2327952A1/de
Application granted granted Critical
Publication of EP2327952B1 publication Critical patent/EP2327952B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/04—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type
    • F42B12/10—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with shaped or hollow charge
    • F42B12/16—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with shaped or hollow charge in combination with an additional projectile or charge, acting successively on the target
    • F42B12/18—Hollow charges in tandem arrangement

Definitions

  • the technical field of the invention is that of the military heads comprising formed charges mounted in tandem.
  • tandem charges are well known. They combine a front formed load and a rear formed load which are separated from each other by intercharging protection means.
  • the charges are initiated in sequence with a delay of the order of a few hundred microseconds or even of the order of a millisecond between the two charges.
  • tandem loads can counter the shields equipped with reactive overprotection.
  • the front load makes it possible to initiate the reactive shielding, and the rear charge perforates the main shield once it is no longer protected by its reactive protection.
  • the known charges all include an intercharging protection which makes it possible to protect the rear charge during the detonation of the front load.
  • This protection most often comprises a screen, more or less solid, which is secured to the envelope of the load and the vents arranged in the case of the load and which allow to radially evacuate the gases generated by the initiation front load.
  • the patent FR2540238 thus describes a tandem load head in which an intercharge protection is made in the form of one or more partitions integral with the outer wall of the military head.
  • the wall is also weakened by streaks, which allows it to burst under the effect of the shock wave.
  • Such protection is particularly cumbersome, the multiplication of screens and fragmentable areas leading to the elongation of the intercharging space.
  • this patent describes a metal disc interposed between the front sleeve and the deformable tube, this thin disc has little effect in absorbing the impact but only prevents the penetration of gas or splinters inside the tube. deformable.
  • the patent EP1531316 describes a tandem head in which the front load and the rear load are separated by a wall pierced by a passage for the jet of the rear load.
  • This partition also comprises a sealing cap applied to a damping material.
  • Such a structure also does not allow to achieve a compact military head.
  • the patent FR2581749 discloses a specific tandem head incorporating a thruster between front load and rear load, the thruster acting intercharges screen.
  • the patent DE4126793 finally proposes a military head with tandem charges in which the rear load is translated with respect to the case by the effect of the gases of the front load, gases that are otherwise deflected around the rear load by the conical profile of a screen.
  • the object of the invention is to provide a military head with tandem loads, in which head, the overall length of the head remains reduced, but the protection of the rear load against the effects of the front load is nevertheless ensured.
  • the subject of the invention is a tandem-loaded military head comprising a front load disposed remotely from a rear load, and an intercharging protection means interposed between the two loads and comprising a means of connection with controlled deformation, a military head.
  • the intercharging protection means comprises at least a first metal screen which is arranged between the front load and the rear load, the first screen which comprises a solid central part to which is attached the controlled strain deformation means which is constituted by a thinned cylindrical zone comprising at least one groove for initiating a deformation of said cylindrical zone, thinned cylindrical zone which is integral with the caliber of the envelope of the rear charge and which covers the latter.
  • the intercharging protection means may comprise a second metal screen interposed between the front load and the first screen, the second screen which is integral with a ferrule connecting the two loads.
  • the second screen may have a conical profile, the top of the cone of which will be directed towards the front load, the first screen being formed of a simple integral conical cowling of the thin cylindrical zone, the conicity of the second screen being identical to that of the first screen.
  • a layer of a deformable material may advantageously be interposed between the first and the second screen.
  • the ferrule may include at least one vent.
  • a tandem charge military head 1 according to the invention comprises a front load 2 which is arranged at a distance from a rear load 3.
  • Each load 2 and 3 is a charge formed, that is to say it comprises an explosive charge on which is applied a concave coating 2a, 3a which generates a jet at high speed during the initiation of the load.
  • the coatings may be conical. But any other concave shape (portion of sphere, paraboloid ...) could be implemented.
  • the choice of the geometry of the coating depends on the desired performance for the fillers 2 and 3.
  • the coatings 2a, 3a will generally be made of a ductile metallic material, for example copper.
  • the figure 1 shows in partial section the rear load 3, which allows to see the coating 3a and the explosive charge 3b contained in a cylindrical envelope 3c.
  • the front load 2 is not cut but is represented by dotted its coating 2a.
  • the front load 2 and the rear load 3 are arranged in a case 4 (or ferrule) which makes it possible to connect the charges to one another.
  • the case 4 has a rear portion 4a slightly larger than that of the rear load 3 and a front portion 4b the caliber of the front load 2.
  • the rear load 3 is fixed to the shell 4 at radial shims 7.
  • the loads 2 and 3 are secured to the shell 4 (and shims 7) by any appropriate means, for example by radial pins (not shown ).
  • the rear portions 4a and 4b before the ferrule 4 are connected by a conical portion 4c.
  • the ferrule 4 further includes vents 5, regularly distributed angularly, and which can radially evacuate a portion of the gases generated during the initiation of the load before 2. Such a known arrangement can partially protect the rear load 3 .
  • the military head 1 finally comprises a means 6 for intercharging protection which is interposed between the front load 2 and the rear load 3.
  • This intercharging protection means 6 comprises at least a first metal screen 8 which is secured to the envelope 3c of the rear load 3 by a controlled deformation linkage means.
  • the metal screen 8 has a conical profile whose cone apex is directed towards the front load 2.
  • the controlled deformation binding means is constituted here by a thin cylindrical zone (or wall) 9 which cap the envelope 3c of the rear charge 3.
  • This cylindrical zone 9 further comprises a groove 10 which makes it possible to initiate a deformation of said cylindrical zone 9.
  • the cylindrical zone 9 comes into axial abutment against a shim 7 of the rear load 3.
  • the cylindrical zone 9 may be glued to the envelope 3c of the rear load or it may be threaded to this envelope.
  • the circular groove 10 extends, inside the cavity 12 delimited by the screen 8, by a bead 11.
  • the screen 8 extended by the cylindrical zone 9 thus constitutes a housing which caps the front of the rear load 3. This housing delimits a volume whose dimensions after deformation of the cylindrical zone 9 are however controlled and which are defined by design so as to allow the formation of the jet of the rear load 3.
  • the massive conical portion of the screen 8 receives during the initiation of the load before 2 the pressure of the generated gases and the rear projections (chips ...) from the front load. This solid part transmits the received shock to the thinned cylindrical zone 9 which will deform plastically by absorbing the mechanical energy received.
  • the rear charge 3 is therefore protected despite the relatively small distance between the two charges.
  • the conical profile of the screen 8 ensures a deflection of the gases which are evacuated by the vents 5.
  • the circular groove 10 has the effect of initiating and directing the plastic deformation of the cylindrical zone 9.
  • the latter instead of splitting longitudinally will rather crash, practically accordion.
  • the figure 2 shows the configuration of the screen 8 and the cylindrical zone 9 after initiation of the front load.
  • the solid portion 8 of the screen has moved in the direction F while the cylindrical portion 9 has remained in abutment on the wedges 7.
  • the cylindrical zone 9 has then crashed.
  • the residual length L2 of the protection means 6 is less than half that of the initial length L1.
  • a screen 8 with a thickness of 5 to 8 mm associated with a cylindrical zone 9 with a thickness of 2 to 3 mm provides effective protection with an intercharging distance of the order of 2 calibres of the rear charge.
  • the cylindrical zone is reduced by about 50 to 70% of its initial length.
  • the figure 3 thus shows a second embodiment of the invention in which the protection means 6 comprises a second metal screen 13 which is interposed between the front load 2 and the first screen 8.
  • This second screen 13 is made integral with the ferrule 4 connecting the two loads by shearable pins 14.
  • the first screen 8 is of relatively small thickness.
  • the taper of the cowling 8 is identical to that of the internal profile 15 of the second screen 13.
  • This layer may cover the entire conical surface of the screens or more simply (as shown here) have the shape of a washer.
  • a deformable material it will be possible to choose a metallic honeycomb (for example based on aluminum) or even a porous metal foam, for example porous aluminum.
  • Such reinforced protection makes it possible to obtain compact military heads (intercharging distance of between 1 and 3 calibres of the rear load) while putting in place a front load 2 of relatively large size (from 70 to 90% of the load size). back).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Laminated Bodies (AREA)
EP10290614.6A 2009-11-26 2010-11-18 Gefechtskopf mit Tandemhohlladung Active EP2327952B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0905693A FR2953009A1 (fr) 2009-11-26 2009-11-26 Tete militaire a charges en tandem

Publications (2)

Publication Number Publication Date
EP2327952A1 true EP2327952A1 (de) 2011-06-01
EP2327952B1 EP2327952B1 (de) 2015-09-09

Family

ID=42246221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10290614.6A Active EP2327952B1 (de) 2009-11-26 2010-11-18 Gefechtskopf mit Tandemhohlladung

Country Status (2)

Country Link
EP (1) EP2327952B1 (de)
FR (1) FR2953009A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3591333A1 (de) * 2018-07-02 2020-01-08 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Tandem-ladung für einen flugkörper und schockabweisende kappe für eine hauptladung einer tandem-ladung
EP3614095A1 (de) * 2018-08-24 2020-02-26 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Tandem-ladung für einen flugkörper
DE102020001784A1 (de) 2020-03-17 2021-09-23 Diehl Defence Gmbh & Co. Kg Geschoss, Wirkmittelanordnung und Verfahren
DE102023000642B3 (de) 2023-02-22 2024-01-25 Bundesrepublik Deutschland, vertr. durch das Bundesministerium der Verteidigung, vertr. durch das Bundesamt für Ausrüstung, Informationstechnik und Nutzung der Bundeswehr Gefechtskopf mit einer Vorhohlladung und einer Haupthohlladung

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540238A1 (fr) 1983-01-27 1984-08-03 Serat Perfectionnements apportes aux charges creuses doubles
FR2552870A1 (fr) 1980-10-24 1985-04-05 France Etat Armement Perfectionnement aux tetes militaires a charges formees montees en tandem
FR2559896A1 (fr) 1984-02-20 1985-08-23 France Etat Armement Retard d'initiation pour tete militaire a charges formees montees en tandem
FR2577037A1 (fr) 1985-01-31 1986-08-08 France Etat Armement Tete militaire a charges formees montees en tandem
FR2581749A1 (fr) 1985-05-10 1986-11-14 France Etat Armement Projectile antichar
DE3601051C1 (en) 1986-01-16 1987-06-11 Messerschmitt Boelkow Blohm Warhead
US4854240A (en) * 1986-12-25 1989-08-08 The State Of Israel, Ministry Of Defence, Israel Military Industries Two-stage shaped charge projectile
DE4126793C1 (de) 1991-08-14 1994-05-11 Deutsche Aerospace Tandemgefechtskopf
DE3740412C1 (de) 1987-11-28 1996-04-25 Rheinmetall Ind Gmbh Gefechtskopf
EP1531316A1 (de) 2003-11-11 2005-05-18 RUAG Munition Struktur eines Geschosses

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552870A1 (fr) 1980-10-24 1985-04-05 France Etat Armement Perfectionnement aux tetes militaires a charges formees montees en tandem
FR2540238A1 (fr) 1983-01-27 1984-08-03 Serat Perfectionnements apportes aux charges creuses doubles
FR2559896A1 (fr) 1984-02-20 1985-08-23 France Etat Armement Retard d'initiation pour tete militaire a charges formees montees en tandem
FR2577037A1 (fr) 1985-01-31 1986-08-08 France Etat Armement Tete militaire a charges formees montees en tandem
FR2581749A1 (fr) 1985-05-10 1986-11-14 France Etat Armement Projectile antichar
DE3601051C1 (en) 1986-01-16 1987-06-11 Messerschmitt Boelkow Blohm Warhead
US4854240A (en) * 1986-12-25 1989-08-08 The State Of Israel, Ministry Of Defence, Israel Military Industries Two-stage shaped charge projectile
DE3740412C1 (de) 1987-11-28 1996-04-25 Rheinmetall Ind Gmbh Gefechtskopf
DE4126793C1 (de) 1991-08-14 1994-05-11 Deutsche Aerospace Tandemgefechtskopf
EP1531316A1 (de) 2003-11-11 2005-05-18 RUAG Munition Struktur eines Geschosses

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3591333A1 (de) * 2018-07-02 2020-01-08 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Tandem-ladung für einen flugkörper und schockabweisende kappe für eine hauptladung einer tandem-ladung
EP3614095A1 (de) * 2018-08-24 2020-02-26 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Tandem-ladung für einen flugkörper
DE102020001784A1 (de) 2020-03-17 2021-09-23 Diehl Defence Gmbh & Co. Kg Geschoss, Wirkmittelanordnung und Verfahren
DE102023000642B3 (de) 2023-02-22 2024-01-25 Bundesrepublik Deutschland, vertr. durch das Bundesministerium der Verteidigung, vertr. durch das Bundesamt für Ausrüstung, Informationstechnik und Nutzung der Bundeswehr Gefechtskopf mit einer Vorhohlladung und einer Haupthohlladung

Also Published As

Publication number Publication date
FR2953009A1 (fr) 2011-05-27
EP2327952B1 (de) 2015-09-09

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