EP0769672A1 - Projektilbildende explosive Ladung - Google Patents

Projektilbildende explosive Ladung Download PDF

Info

Publication number: EP0769672A1
Authority: EP; European Patent Office
Prior art keywords: plate; coating; core; charge; cover
Prior art date: 1995-10-20
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

EP96401984A

Other languages

English (en)

French (fr)

Other versions

EP0769672B1 (de

Inventor

Jean-Luc Renaud-Bezot

Bernard Ceyrat

Laurent Chauveau

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.)

Giat Industries SA

Original Assignee

Giat Industries 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.)

1995-10-20

Filing date

1996-09-19

Publication date

1997-04-23

1996-09-19 Application filed by Giat Industries SA filed Critical Giat Industries SA

1997-04-23 Publication of EP0769672A1 publication Critical patent/EP0769672A1/de

2001-01-10 Application granted granted Critical

2001-01-10 Publication of EP0769672B1 publication Critical patent/EP0769672B1/de

2016-09-19 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

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
- F42B1/028—Shaped or hollow charges characterised by the form of the liner
- 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
- F42B1/032—Shaped or hollow charges characterised by the material of the liner

Definitions

the technical field of the invention is that of nucleus-generating charges.
the core-generating charges generally comprise an explosive charge placed in an envelope and to which a coating is applied having the overall shape of a spherical cap.
the coating is set in motion by the incident pressure wave. It deforms by turning over "like a thimble", that is to say it transforms into a projectile (or core) the front part of which is formed by the axial zone of the covering and the rear part is a formed skirt by the periphery of the coating.
Patent FR2627580 describes such a charge generating a nucleus.
the coating In order to improve the distribution of the masses on the core thus formed, it is usually sought to give the coating a thickness which decreases from its middle part to its periphery.
the invention provides a core generating charge which generates a core with improved aerodynamic stability.
Stability is improved thanks to the presence of means which ensure that the skirt generated by the deformation of the peripheral part of the coating does not fold back towards the front of the core, even if the thickness of this peripheral part is very weak.
the subject of the invention is a charge generating a nucleus comprising an explosive charge placed in an envelope and a coating intended to be set in motion by the detonation of the explosive, a coating whose thickness decreases between a central part and its periphery. in contact with the envelope, this charge is characterized in that it comprises a plate disposed between the explosive charge and the coating, plate having a diameter equal to the internal diameter of the envelope and which is in contact with the coating at least at a thinned peripheral part thereof, the material of the plate being chosen such that it reduces the speed communicated to the peripheral part of the coating by the explosive charge during its initiation.
the material of the plate has a density less than or equal to that of the coating material and a limit pressure of Hugoniot greater than or equal to 0.1 GPa.
the total mass of the plate will preferably be less than that of the coating.
the mass of the plate can thus be between 2% and 15% of the mass of the coating.
the plate may have an annular shape.
the plate will advantageously have a thickness which decreases regularly from its external diameter to its axial part.
tantalum coating we can make the tantalum coating and then choose the plate material from the following materials: Aluminum, Iron, steel, copper, Molybdenum.
a charge 1 according to the invention comprises an explosive charge 2 placed in an envelope 3 and a coating 4 intended to be set in motion by the detonation of the explosive 2.
the charge 1 also includes ignition means 5 of known type, constituted for example by a primer 5a and a relay explosive 5b.
Means may be provided for shaping the detonation wave, or else use initiating means which generate a plane wave.
the thickness of the coating 4 decreases between a central part 4a and a peripheral part 4b in contact with the envelope 3.
the charge 1 comprises a plate 6 which is disposed between the explosive charge 2 and the coating 4.
the plate 6 has a diameter equal to the internal diameter of the envelope 2 and it is in contact with the coating 4.
the coating 4 is fixed to the plate 6, for example by gluing.
the material of the plate 6 will be chosen such that it decreases the speed communicated by the explosive charge 2 to the coating 4 during initiation.
Figure 1b shows a core 7 generated by a coating of a filler according to the prior art.
the core has a rear skirt 8 which is folded over the body of the core 7, thus reducing the length and the aerodynamic stability of the latter.
Figure 1a shows a core 7 generated by the load 1 according to the invention.
the reduction in the speed of projection which is ensured by the plate 6 makes it possible to slow down the deformation of the peripheral part 4b of the coating, thus ensuring the formation of a skirt 8 not folded over the core 7.
the plate 6 is detached from the coating 4 which continues on its own path.
the plate will also be given a total mass which will be less than that of the coating. This is so as not to excessively reduce the energy transmitted by the explosive charge 2 to the covering 4.
the shock wave is therefore transmitted to the coating practically without damping. Only the local speed of the coating is slightly reduced at its periphery 4b due to the sharing at this level of the amounts of movement between the plate and the coating.
the plate will be given a mass of between 2% and 15% of the mass of the coating.
the plate will generally have a thickness which decreases regularly from its external diameter to its axial part.
the decrease in speed must be maximum at the periphery 4b of the coating and be almost zero at the central part 4a.
the material of the plate 6 can be made of Aluminum, Iron, steel, copper or Molybdenum.
FIG 2 shows an alternative embodiment of the invention in which the plate 6 has an annular shape.
a core-generating charge comprising an annular aluminum plate applied to a tantalum coating.
the thickness of the plate being of the order of 1 mm at the periphery while that of the facing coating is 2 mm.

Landscapes

Engineering & Computer Science (AREA)
General Engineering & Computer Science (AREA)
Pressure Welding/Diffusion-Bonding (AREA)
Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

EP96401984A 1995-10-20 1996-09-19 Projektilbildende explosive Ladung Expired - Lifetime EP0769672B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR9512337		1995-10-20
FR9512337A FR2740212B1 (fr)	1995-10-20	1995-10-20	Charge explosive generatrice de noyau

Publications (2)

Publication Number	Publication Date
EP0769672A1 true EP0769672A1 (de)	1997-04-23
EP0769672B1 EP0769672B1 (de)	2001-01-10

Family

ID=9483735

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP96401984A Expired - Lifetime EP0769672B1 (de)	1995-10-20	1996-09-19	Projektilbildende explosive Ladung

Country Status (4)

Country	Link
US (1)	US5744747A (de)
EP (1)	EP0769672B1 (de)
DE (1)	DE69611503T2 (de)
FR (1)	FR2740212B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2007099362A1 (en) *	2006-03-04	2007-09-07	Alford Research Limited	An explosive charge
CN103453803A (zh) *	2013-08-16	2013-12-18	中国工程物理研究院化工材料研究所	高效破石用聚能罩

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2793314B1 (fr) *	1996-04-02	2002-05-31	Giat Ind Sa	Charge generatrice de noyau a performances ameliorees
FR2759158B1 (fr) *	1997-02-06	1999-02-26	Giat Ind Sa	Charge generatrice de noyau comportant des moyens de liaison du revetement et de l'enveloppe
EP0955517A1 (de) *	1998-05-04	1999-11-10	SM Schweizerische Munitionsunternehmung AG	Munitionskörper mit einem mehrstufigen Gefechtskopf
US6305289B1 (en) *	1998-09-30	2001-10-23	Western Atlas International, Inc.	Shaped charge for large diameter perforations
FR2812384B1 (fr)	2000-07-26	2002-12-06	Giat Ind Sa	Dispositif de neutralisation d'une charge utile
US20050115448A1 (en) *	2003-10-22	2005-06-02	Owen Oil Tools Lp	Apparatus and method for penetrating oilbearing sandy formations, reducing skin damage and reducing hydrocarbon viscosity
US7078603B2 (en) *	2005-01-31	2006-07-18	Pioneer Hi-Bred International, Inc.	Hybrid maize 32R38
EP1918507A1 (de) *	2006-10-31	2008-05-07	Services Pétroliers Schlumberger	Hohlladung enthaltend eine Säure
DE102022003744A1 (de)	2022-10-12	2024-04-18	Diehl Defence Gmbh & Co. Kg	Feinabstimmung eines explosiv geformten Projektils

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1280513A (fr) *	1960-02-23	1961-12-29	Bofors Ab	Charge creuse
US3188955A (en) *	1961-03-31	1965-06-15	Western Co Of North America	Explosive charge assemblies
WO1990002918A1 (de) *	1988-09-07	1990-03-22	Rheinmetall Gmbh	Gefechtskopf
FR2657156A1 (fr) *	1990-01-16	1991-07-19	Rheinmetall Gmbh	Bague de fixation pour la fixation axiale d'une garniture de formation de projectile.
FR2681677A1 (fr) *	1991-09-20	1993-03-26	Thomson Brandt Armements	Charge explosive avec revetement a proprietes mecaniques reparties.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3913488A (en) *	1973-09-17	1975-10-21	Us Army	Ballistic disc
DE3144354C1 (de) *	1981-11-07	1991-01-03	Rheinmetall Gmbh	Einlage fuer eine Sprengladung zum Bilden eines im wesentlichen stabfoermigen Projektils
FR2632394B1 (fr) *	1986-07-24	1990-11-30	France Etat Armement	Charge explosive generatrice de noyau
FR2627580B1 (fr) *	1988-02-18	1993-02-19	France Etat Armement	Procede permettant d'obtenir un noyau comportant des ailettes stabilisatrices et charge militaire faisant application
DE3823823A1 (de) *	1988-07-14	1990-01-18	Diehl Gmbh & Co	Gefechtskopf
US5155296A (en) *	1992-03-18	1992-10-13	The United States Of America As Represented By The Secretary Of The Army	Thermally enhanced warhead
DE4213318C2 (de) *	1992-04-23	2000-04-13	Rheinmetall W & M Gmbh	Verfahren zur Herstellen einer Ladungseinlage

1995
- 1995-10-20 FR FR9512337A patent/FR2740212B1/fr not_active Expired - Fee Related
1996
- 1996-09-19 DE DE69611503T patent/DE69611503T2/de not_active Expired - Fee Related
- 1996-09-19 EP EP96401984A patent/EP0769672B1/de not_active Expired - Lifetime
1997
- 1997-08-26 US US08/917,542 patent/US5744747A/en not_active Expired - Lifetime

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1280513A (fr) *	1960-02-23	1961-12-29	Bofors Ab	Charge creuse
US3188955A (en) *	1961-03-31	1965-06-15	Western Co Of North America	Explosive charge assemblies
WO1990002918A1 (de) *	1988-09-07	1990-03-22	Rheinmetall Gmbh	Gefechtskopf
FR2657156A1 (fr) *	1990-01-16	1991-07-19	Rheinmetall Gmbh	Bague de fixation pour la fixation axiale d'une garniture de formation de projectile.
FR2681677A1 (fr) *	1991-09-20	1993-03-26	Thomson Brandt Armements	Charge explosive avec revetement a proprietes mecaniques reparties.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2007099362A1 (en) *	2006-03-04	2007-09-07	Alford Research Limited	An explosive charge
US9746292B2 (en)	2006-03-04	2017-08-29	Alford Research Limited	Explosive charge
CN103453803A (zh) *	2013-08-16	2013-12-18	中国工程物理研究院化工材料研究所	高效破石用聚能罩
CN103453803B (zh) *	2013-08-16	2016-03-16	中国工程物理研究院化工材料研究所	高效破石用聚能罩

Also Published As

Publication number	Publication date
DE69611503T2 (de)	2001-04-26
FR2740212B1 (fr)	1997-12-05
US5744747A (en)	1998-04-28
FR2740212A1 (fr)	1997-04-25
DE69611503D1 (de)	2001-02-15
EP0769672B1 (de)	2001-01-10

Publication	Publication Date	Title
EP0112216B1 (de)	1987-03-25	Geschoss für Feuerwaffen
EP0769672A1 (de)	1997-04-23	Projektilbildende explosive Ladung
FR2667794A1 (fr)	1992-04-17	Club de golf.
EP1089903B1 (de)	2002-09-18	Hydraulische kapazität mit druckabhängig gesteuertem aufnahmevermögen
CA2221580C (fr)	2005-09-13	Charge generatrice de noyau a performances ameliorees
FR2632394A1 (fr)	1989-12-08	Charge explosive generatrice de noyau
FR2771167A1 (fr)	1999-05-21	Balle expansive
FR3003804A1 (fr)	2014-10-03	Dispositif de butee de suspension et jambe de suspension equipee d'une telle butee
CA2738094A1 (fr)	2010-04-22	Composant pour le forage et l'exploitation des puits d'hydrocarbures
FR2685468A1 (fr)	1993-06-25	Tube douille pour grenade a fusil pouvant retenir les fragments de la balle.
WO1996012117A1 (fr)	1996-04-25	Frein a disque a montage ameliore
EP0279709A1 (de)	1988-08-24	Gefechtsköpfe mit mindestens einer Hauptladung und einer Vorladung
FR2851038A1 (fr)	2004-08-13	Sabot pour projectile sous calibre
FR2520102A1 (fr)	1983-07-22	Charge creuse, notamment pour missile
FR2953009A1 (fr)	2011-05-27	Tete militaire a charges en tandem
FR2759158A1 (fr)	1998-08-07	Charge generatrice de noyau comportant des moyens de liaison du revetement et de l'enveloppe
EP0773424B1 (de)	2000-09-20	Hohlladungsgefechtskopf mit verbesserter Beschleunigungsfestigkeit
FR2917130A1 (fr)	2008-12-12	Propulseur a performance amelioree
EP0471617A1 (de)	1992-02-19	Dichtungsband für Pfeilgeschoss
FR2791288A1 (fr)	2000-09-29	Procede de soudage de tuyaux de raccordement aux extremites opposees d'un bras de suspension de stabilisateur creux pour vehicule
EP1870640B1 (de)	2011-02-23	Gefechtskopf welcher explosif ein rorhförmiges Projetil bildet
FR2825126A1 (fr)	2002-11-29	Systeme anti-rotation et anti-migration d'un ressort sur ses appuis
FR2537061A1 (fr)	1984-06-08	Tampon de fin de course pour suspensions de vehicules automobiles
FR2834027A1 (fr)	2003-06-27	Dispositif d'attenuation de vibrations
EP0805335B1 (de)	2001-07-18	Splittergeschoss mit äquatorialer Ausstosssymmetrie

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