EP1870640A2 - Rohrkernbildender Gefechtskopf - Google Patents

Rohrkernbildender Gefechtskopf Download PDF

Info

Publication number
EP1870640A2
EP1870640A2 EP07290750A EP07290750A EP1870640A2 EP 1870640 A2 EP1870640 A2 EP 1870640A2 EP 07290750 A EP07290750 A EP 07290750A EP 07290750 A EP07290750 A EP 07290750A EP 1870640 A2 EP1870640 A2 EP 1870640A2
Authority
EP
European Patent Office
Prior art keywords
insert
coating
explosive charge
charge
rear portion
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
EP07290750A
Other languages
English (en)
French (fr)
Other versions
EP1870640A3 (de
EP1870640B1 (de
Inventor
Rémi Boulanger
Jean-Paul Duparc
Yann Menard
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 EP1870640A2 publication Critical patent/EP1870640A2/de
Publication of EP1870640A3 publication Critical patent/EP1870640A3/de
Application granted granted Critical
Publication of EP1870640B1 publication Critical patent/EP1870640B1/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
    • F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
    • F42B1/02—Shaped or hollow charges
    • F42B1/024—Shaped or hollow charges provided with embedded bodies of inert material

Definitions

  • the technical field of the invention is that of the warheads formed charge, and more particularly that of the core generating charges.
  • the formed charge warheads conventionally include a concave liner which is applied against an explosive charge associated with initiating means.
  • Core generating charges generally have a coating generally having the shape of a spherical cap. During the detonation of the explosive, this coating is set in motion by the incident pressure wave. It is deformed by turning "in glove finger", that is to say that it is transformed into a projectile (or nucleus) whose front part is constituted by the central zone of the coating and the rear part is a formed skirt by the periphery of the coating.
  • the patent FR2627580 describes such a charge.
  • the patent US 4841864 describes such a generating charge of tubular core.
  • This load comprises a mandrel which is disposed on the outer face of the load coating and which ensures the shaping of the tubular core.
  • the vibrations received by the military head during its operational implementation will lead to a separation of the mandrel and the coating or to a simple misalignment leading to poor formation of the core.
  • a piercing projectile associating a bar and a shaped charge.
  • the load can alternatively be a load generating a tubular core.
  • this projectile has the main function of ensuring a perforation by a kinetic bar and the size of the ammunition is important.
  • the object of the invention is to propose a military head that does not have such disadvantages.
  • the head according to the invention thus has a reduced axial size while having a robust structure for operational integration in an ammunition.
  • the subject of the invention is a shaped warhead comprising a concave coating applied against an explosive charge, disposed in an envelope comprising a bottom, and which is associated with priming means, the head comprising at least one insert arranged in an axial manner with respect to the coating, which insert is intended to give a tubular profile to the core generated by the coating during the initiation of the explosive charge, characterized in that the insert passes completely through the coating and penetrates into the the interior of the explosive charge, the insert having a rear portion which is remote from the bottom of the envelope.
  • the rear part of the insert will be at a distance from the bottom of the casing greater than or equal to the diameter of the insert.
  • the length of the insert which is located outside the load will preferably be greater than or equal to 0.5 times the size of the load.
  • the insert may be completely cylindrical.
  • the insert may comprise a conical rear portion.
  • only the tapered rear part of the insert can enter the explosive charge.
  • the head advantageously incorporates a rear containment block which has a cylindrical outer surface fitted to the inner housing of the casing and has a conical inner bore whose conicity is substantially the same as that of the rear part of the insert.
  • the insert may be made of steel.
  • a warhead 1 with a shaped charge has a concave coating 2 which is applied against an explosive charge 3 contained in an envelope 4.
  • the explosive charge 3 is associated with means of initiation which comprise a detonator 5, integral with a bottom 4a or rear portion of the casing 4, and a detonation relay 6 which is interposed between the detonator 5 and the explosive charge 3.
  • This head 1 comprises an insert 7 which is arranged axially with respect to the coating 2.
  • the insert 7 has the same axis of symmetry 8 as the warhead 1. It is intended to form the coating during the initiation of the explosive charge so as to produce a tubular projectile.
  • the insert 7 passes completely through the coating 2 and penetrates inside the explosive charge 3.
  • a cylindrical bore 9 is made inside the load 3. This machining is performed after the casting and the solidification of the load 3.
  • the insert 7 is thus held both by the bore 9 and the coating 2.
  • the securing of the insert is ensured by gluing.
  • a material having a sufficient mechanical strength will be chosen to support the deformation of the coating 2 as well as the guiding and the formation of the latter.
  • the steel insert may be made with a coating made of nickel.
  • the insert comprises a rear portion 10 which is located at a distance D from the bottom 4a of the casing 4 (and also at a distance from the priming means 5, 6).
  • This distance D is preferably greater than the diameter (d) of the insert.
  • the distance D makes it possible to ensure that the insert does not disturb the initiation of the explosive charge 3 nor does it hinder the progression of the detonation wave inside the explosive charge 3.
  • the length L of the insert which is located outside the load will be chosen greater than or equal to half the caliber C of the load.
  • the caliber C considered here is the value of the outer diameter of the coating 2. We will thus have L ⁇ 0.5 C.
  • the insert 7 will have a diameter d which will be chosen according to the desired diameter for the internal bore of the tubular core. It will be noted that the greater this diameter d is, the more the tubular core obtained can realize a cut reactive protection without initiating it. Indeed, for a large bore diameter of the core, there is no recombination shock waves at the level of the explosive impacted reactive protection.
  • the insert 7 is completely cylindrical. It is of course possible to give the insert a different profile, for example slightly conical.
  • Figure 2 shows a military head 1 according to a second embodiment of the invention.
  • the insert 7 has a rear portion 11 which is conical and which is placed in a complementary conical housing 12 which is machined in the explosive charge 3.
  • the conical rear portion 11 of the insert enters the explosive charge 3, the cylindrical portion of the insert is guided by the axial bore of the coating 2.
  • the insert 7 is again glued to the explosive charge 3.
  • the rear tip of the cone 11 is at a distance D from the bottom 4a of the casing 4 (and also at a distance from the priming means 5, 6).
  • the military head 1 also incorporates a rear containment block 13 which has a cylindrical outer surface fitted to the inner housing of the casing 4 and which has a conical inner bore 14.
  • This containment block 13 is made for example of a light alloy (for example an aluminum alloy) or plastic. Block 13 guides the detonation wave in the explosive charge 3 during the initiation of the latter.
  • the taper of the bore 14 is substantially the same as that of the rear portion 11 of the insert 7.
  • the rear portion 11 of the insert acts as a shaper for the detonation wave. This embodiment therefore ensures both a good maintenance of the insert and a good initiation of the load.
  • tubular cores having a large internal diameter are particularly interesting because they can cut a reactive protection without initiating it.
  • a large diameter is obtained for the boring of the core by increasing the diameter of the insert, but there is then the problem of the bootability of the explosive charge of the warhead itself.
  • This embodiment of the invention therefore makes it possible to ensure the primability of the military head incorporating an insert of large diameter.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Powder Metallurgy (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Coating Apparatus (AREA)
  • Golf Clubs (AREA)
  • Paper (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP07290750A 2006-06-22 2007-06-18 Gefechtskopf welcher explosif ein rorhförmiges Projetil bildet Active EP1870640B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0605739A FR2902869B1 (fr) 2006-06-22 2006-06-22 Tete militaire engendrant un noyau tubulaire.

Publications (3)

Publication Number Publication Date
EP1870640A2 true EP1870640A2 (de) 2007-12-26
EP1870640A3 EP1870640A3 (de) 2008-08-27
EP1870640B1 EP1870640B1 (de) 2011-02-23

Family

ID=37672433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07290750A Active EP1870640B1 (de) 2006-06-22 2007-06-18 Gefechtskopf welcher explosif ein rorhförmiges Projetil bildet

Country Status (5)

Country Link
EP (1) EP1870640B1 (de)
AT (1) ATE499582T1 (de)
DE (1) DE602007012615D1 (de)
ES (1) ES2361685T3 (de)
FR (1) FR2902869B1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948181A (en) 1973-05-14 1976-04-06 Chamberlain Manufacturing Corporation Shaped charge
WO1985001572A1 (en) 1983-10-04 1985-04-11 Brind Anstalt Für Industrie Patente Hybrid explosive unit
US4841864A (en) 1988-02-09 1989-06-27 The United States Of America As Represented By The Secretary Of The Army Controlled explosively formed penetrator
FR2627580A1 (fr) 1988-02-18 1989-08-25 France Etat Armement Procede permettant d'obtenir un noyau comportant des ailettes stabilisatrices et charge militaire faisant application
FR2698163A1 (fr) 1992-09-15 1994-05-20 Giat Ind Sa Projectile de perforation et munition équipée d'un tel projectile.
FR2771486A1 (fr) 1983-12-16 1999-05-28 Diehl Gmbh & Co Agencement detecteur pour munition a tete chercheuse

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5753850A (en) * 1996-07-01 1998-05-19 Western Atlas International, Inc. Shaped charge for creating large perforations

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948181A (en) 1973-05-14 1976-04-06 Chamberlain Manufacturing Corporation Shaped charge
WO1985001572A1 (en) 1983-10-04 1985-04-11 Brind Anstalt Für Industrie Patente Hybrid explosive unit
FR2771486A1 (fr) 1983-12-16 1999-05-28 Diehl Gmbh & Co Agencement detecteur pour munition a tete chercheuse
US4841864A (en) 1988-02-09 1989-06-27 The United States Of America As Represented By The Secretary Of The Army Controlled explosively formed penetrator
FR2627580A1 (fr) 1988-02-18 1989-08-25 France Etat Armement Procede permettant d'obtenir un noyau comportant des ailettes stabilisatrices et charge militaire faisant application
FR2698163A1 (fr) 1992-09-15 1994-05-20 Giat Ind Sa Projectile de perforation et munition équipée d'un tel projectile.

Also Published As

Publication number Publication date
ATE499582T1 (de) 2011-03-15
EP1870640A3 (de) 2008-08-27
ES2361685T3 (es) 2011-06-21
FR2902869B1 (fr) 2010-09-10
FR2902869A1 (fr) 2007-12-28
EP1870640B1 (de) 2011-02-23
DE602007012615D1 (de) 2011-04-07

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