EP0943887A1 - Dispositif de conversion permettant d'obtenir un obus perforant anti structures bétonnées à partir d'un obus explosif et obus perforant obtenu avec un tel dispositif - Google Patents
Dispositif de conversion permettant d'obtenir un obus perforant anti structures bétonnées à partir d'un obus explosif et obus perforant obtenu avec un tel dispositif Download PDFInfo
- Publication number
- EP0943887A1 EP0943887A1 EP99104144A EP99104144A EP0943887A1 EP 0943887 A1 EP0943887 A1 EP 0943887A1 EP 99104144 A EP99104144 A EP 99104144A EP 99104144 A EP99104144 A EP 99104144A EP 0943887 A1 EP0943887 A1 EP 0943887A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shell
- conversion device
- explosive
- conversion
- warhead
- 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
Links
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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
- F42B12/20—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type
- F42B12/201—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type characterised by target class
- F42B12/204—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type characterised by target class for attacking structures, e.g. specific buildings or fortifications, ships or vehicles
-
- 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
- F42B12/08—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 armour-piercing caps; with armoured cupola
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
Definitions
- the technical field of the invention is that of shells artillery explosives.
- Known artillery explosive shells have a explosive charge placed in a body and which is initiated by a priming device.
- the initiating device is generally a rocket which is screwed before firing in a bore arranged at level of a front part of the shell.
- the rocket is most often a proximity rocket with also a powerful operating mode.
- the choice of operating mode is done at the time of firing.
- the mode "proximity” leads to initiation at a given distance from ground, giving the shell an effectiveness against soft targets.
- the "impactful” mode results in impact operation on the ground or a target.
- the artillery shell is fired along a trajectory ballistics curve at a distance from the weapon of the order of 20 to 40 km. Even in impactful operation, these shells have a reduced effectiveness against concrete targets. The result excessive use of shells in certain operations targeting hard targets such as buildings or parkings.
- Patent FR847239 describes an explosive shell with a base rocket and an aerodynamic warhead. However this projectile has no anti-piercing function concrete and its priming device is not removable.
- the invention makes it possible to develop a stock of shells classics by giving them at least one new mode of operation. It avoids the acquisition of new types of shells while giving classic shells superior anti-infrastructure efficiency.
- the invention also relates to the armor-piercing shell obtained using such a conversion device.
- the subject of the invention is a device for conversion to transform into anti armor piercing shell concrete structures an explosive shell of conventional artillery, with a front bore intended to receive a rocket and a first rear linkage means intended for example for receive an aerodynamic drag reduction device
- this conversion device is characterized in that it comprises, on the one hand a priming box capable of being attached to the shell by the first connecting means, housing containing a security and arming device and a means of initiating the explosive charge of the shell at across a bottom wall of it on the other hand a solid perforating warhead which attaches to the bore before the shell by a second means of connection.
- the initiation means can be formed by a hollow charge whose coating conical at its base oriented towards the bottom wall of the body shells.
- the initiation means may consist of a flat load whose coating has its base oriented towards the bottom wall of the shell body.
- the means initiation can be constituted by a relay charge shock wave enhancer.
- the relay load can be placed in a housing annular.
- the security and arming system may include electronic or pyrotechnic initiation delay.
- the initiation delay could advantageously be programmable.
- the warhead perforating may include a skirt surrounding the surface external of a front part of the shell body.
- the perforating warhead can be produced made of tungsten density material greater than 10,000 kg / m3 and hardness greater than 300 Hv.
- the invention also relates to an explosive shell equipped with such a conversion device.
- This shell includes a charge of explosive placed in a body and initiated by a priming device it is characterized in that the initiating device is contained in a housing fixed by a first connecting means removable at a rear part of the shell body and initiating the explosive charge through of a shell bottom wall, a full perforating warhead being fixed at the level of the front bore of the shell by a second removable connection means.
- an explosive shell according to the prior art comprises an explosive charge 1 arranged in a metallic body 2 carrying at its rear part a belt 3 intended to ensure gas tightness in the weapon barrel.
- Body 2 of the shell has a tapped bore 5 at level of its front part, bore intended to receive a rocket 4, usually a proximity rocket.
- An intermediate ring 6 is most often interposed between rocket 4 and bore 5. This ring carries a load relay pyrotechnics 7.
- the rear part of the shell has a housing 8 in which screws a drag reduction device 9 aerodynamic.
- the device shown here is a generator gas pyrotechnics (more commonly referred to in the artillery field by the English term “Base bleed”).
- This device increases the range of the shell.
- Patent FR2572512 describes such a shell with a drag reduction device which can be adapted to shell in the field according to operational needs.
- a hollow pellet as described by the patent FR2572512 could be fixed in the housing 8 in place and place of the bleed base.
- FIG. 2 shows a first embodiment of a shell 10 according to the invention.
- the device of drag reduction is replaced by a box 14 containing a priming device 15.
- the housing is linked to the body 2 by a first connecting means which is here the internal thread carried by the housing 8 of the body.
- the spindle closing the threaded bore 5 is replaced by a massive point 11 made of high-tensile steel mechanical characteristics (for example 100C6) or in one tungsten material (preferably mass volume greater than 10,000 kg / m3 and hardness greater than 300 Hv).
- the massive point 11 constitutes a perforating warhead.
- the warhead is linked to the body by a second means of connection which is here the thread carried by bore 5.
- the bottom 12 of the body 2 is pierced with an orifice 13 which will closed with a thin sheet metal plate (not shown) for allow the shell to fill with the explosive through bore 5.
- the priming device 15 is shown schematically. It includes an electronic circuit board control 16 powered by an electric power source 17 and comprising an accelerometer 18.
- the plate 16 is connected to a primer 19 with electrical initiation which is carried by a shutter 20 of pyrotechnic chain interruption.
- the blind is part of a conventional weapon security device well known to those skilled in the art and who is therefore not shown in detail.
- the armament security device is intended for maintain the shutter during the shell storage phases in a safety position in which the primer 19 is isolated from an initiation means constituted by a relay of transmission of detonation 21.
- the device ensures the passage of the shutter in a armed position following the firing of the shell by a weapon, the armed position is represented here.
- the electronic board will also incorporate a delay electronic (not shown).
- the security When fired by a weapon system, the security adopts its armed position (after a delay of classic trajectory start).
- the primer 19 is therefore aligned with relay 21, itself facing the load explosive 1 through orifice 13.
- the accelerometer 18 detects braking impact.
- the electronic board processes the information of braking so as to cause the initiation of the primer 21 to the outcome of the preprogrammed electronic delay.
- the perforating warhead 11 ensures the penetration of the shell in the hard target, the delay is chosen so that the initiation of the explosive charge occurs only when the shell is sufficiently engaged in the target (at least the half the length of the shell body).
- the perforating warhead could be formed in one piece with the body 2 of the shell.
- FIG. 3 represents another embodiment of a shell according to the invention.
- This embodiment implements a device for conversion comprising a priming box 14 and a warhead full perforator 11.
- the conversion device according to the invention is delivered in a specific package (not shown) and it is likely to adapt, for example in the field of operations, to a conventional explosive shell such as that shown in Figure 1 and which has a thread at its rear part to receive a reduction device aerodynamic drag and a tapped bore at its front to receive a rocket.
- the explosive shell thus transformed may have a different operational use, its anti effectiveness concrete structures having become superior.
- the drag reduction devices are also adaptable to the field shell (see patent FR2572512) and that the warhead rockets 4 are also stored independently of shells. It is therefore easy to give to an explosive shell as described with reference to Figure 1 either a soft anti-target function by equipping it with a rocket proximity 4, i.e. an anti-concrete structure function in providing it with the conversion device according to the invention.
- the perforating warhead 11 comprises a skirt 26 surrounding the external surface of a front part of the body 2 of the shell.
- Such an arrangement makes it possible to increase the resistance body mechanics 2 of the shell and to avoid the sinking of the warhead 11 inside the body 2 upon impact on the target.
- the structure of the priming unit 14 adaptable to a classic shell is special.
- the priming box contains as a means of initiation (instead of the charge transmission relay 21) a small shaped charge 22, comprising a conical coating 23, for example of copper, and an explosive charge 24.
- This hollow charge is initiated by means of a primer 19 which is (as in the embodiment of Figure 2) integral with a flap 20 of a security device of weapons.
- a primer 19 which is (as in the embodiment of Figure 2) integral with a flap 20 of a security device of weapons.
- the functioning of the primer is controlled by an electronic circuit board 16 provided with a electronic delay and accelerometer 18.
- the housing 14 is provided with means ensuring its tightness when it is separated from the shell.
- these means comprise a cover 25 in which the shaped charge 22.
- the cover 25 is fixed to the housing 14 in a sealed manner, for example by welding. He will be able to also be screwed to the housing, a gasket silicone then being placed between cover and housing.
- the base of the hollow charge coating 23 is therefore oriented towards the wall 12 of the bottom of the shell body.
- the jet generated by its coating 23 will pass through the cover 25 and the bottom 12 of the body 2 of the shell.
- the energy of the jet will be enough to initiate the explosive charge 1.
- the thickness of the cover 25 may be reduced to less than one mm at the level of the hollow charge. We could possibly provide a cover pierced at load level, opening will be then closed by a glitter of tin glued to ensure sealing during storage of the case alone.
- composition B a composition explosive combining 60% by mass of Hexogen and 40% by mass of Tolite (usually called "composition B") through of a bottom 12 5 mm thick.
- boot housing is possible.
- Figure 4a shows a priming box 14 in which the initiation means consists of a charge plate 27 with the coating 28 (made of copper) in the form of concave cap at its base oriented towards the wall 12 of bottom of the shell body (shown in dotted lines).
- the charge generates a nucleus with sufficient energy to cross the bottom 12 and ensure the initiation of the explosive charge of the shell.
- FIG. 4b shows another alternative embodiment of the boot case 14, in which the initiation means consists of a relay reinforcing load 31 wave of choc.
- a first charge relay 31 is arranged in an annular housing 37 arranged on the upper face of the cover 25 and coaxial with it latest.
- This first relay load 31 communicates by several longitudinal channels 32 (filled with a composition detonation wave transmission) with a composition transmission pyrotechnics 33, itself initiated by a second relay 34.
- Channels 32 are regularly distributed angularly (for example 3 channels at 120 °) on a coaxial circumference on the cover 25.
- the transmission composition 33 is disposed in a cylindrical bowl 35 of a support 36 of the armament security device.
- composition loading B through a 5 mm wall.
- the conversion device according to the invention therefore allows increase the possibilities offered by an endowment in conventional explosive shells.
- the same shell structure can indeed perform several different functions (explosive anti light structures, anti concrete structures, anti tracks.).
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
- la figure 1 est une vue en coupe longitudinale d'un obus de type connu,
- la figure 2 est une vue en coupe longitudinale d'un premier mode de réalisation d'un obus selon l'invention,
- la figure 3 est une vue en coupe longitudinale d'un deuxième mode de réalisation d'un obus selon l'invention,
- les figures 4a, 4b et 4c montrent trois variantes de réalisation du boítier d'amorçage.
- pour la charge du deuxième relais 34: 2 g de tétryl graphité,
- pour la composition de transmission 33 utilisée également pour garnir les canaux 32 : 5 g d'héxogène de granulométrie comprise entre 100 et 200 micromètres,
- pour la charge du premier relais 31 : 15 g d'une composition associant Héxogène et cire dans les proportions en masse relatives 95% hexogène / 5% Cire, et incorporant du graphite (1% de la masse totale de la composition).
Claims (10)
- Dispositif de conversion permettant de transformer en obus perforant anti structures bétonnées un obus explosif d'artillerie classique, doté d'un alésage avant (5) destiné à recevoir une fusée et d'un premier moyen de liaison arrière destiné par exemple à recevoir un dispositif de réduction de traínée aérodynamique, dispositif de conversion caractérisé en ce qu 'il comporte, d'une part un boítier d'amorçage (14) susceptible d'être fixé à l'obus par le premier moyen de liaison, boítier renfermant un dispositif de sécurité et d'armement et un moyen d'initiation du chargement explosif (1) de l'obus au travers d'une paroi (12) de fond de celui-ci, d'autre part une ogive perforante pleine (11) qui se fixe au niveau de l'alésage avant (5) de l'obus par un deuxième moyen de liaison.
- Dispositif de conversion selon la revendication 1, caractérisé en ce que le moyen d'initiation est constitué par une charge creuse (22) dont le revêtement conique (23) a sa base orientée vers la paroi (12) de fond du corps d'obus.
- Dispositif de conversion selon la revendication 1, caractérisé en ce que le moyen d'initiation est constitué par une charge plate (27) dont le revêtement (28) a sa base orientée vers la paroi de fond du corps d'obus.
- Dispositif de conversion selon la revendication 1, caractérisé en ce que le moyen d'initiation est constitué par une charge relais (31) renforçatrice d'onde de choc.
- Dispositif de conversion selon la revendication 4, caractérisé en ce que la charge relais (31) est disposée dans un logement annulaire (37).
- Dispositif de conversion selon une des revendications 1 à 5, caractérisé en ce que le dispositif de sécurité et d'armement comprend un retard d'initiation électronique ou pyrotechnique.
- Dispositif de conversion selon la revendication 6, caractérisé en ce que le retard d'initiation est programmable.
- Dispositif de conversion selon une des revendications 1 à 7, caractérisé en ce que l'ogive perforante (11) comporte une jupe (26) entourant la surface externe d'une partie avant du corps (2) d'obus.
- Dispositif de conversion selon une des revendications 1 à 8, caractérisé en ce que l'ogive perforante (11) est réalisée en un matériau à base de tungstène de masse volumique supérieure à 10.000 kg/m3 et de dureté supérieure à 300 Hv.
- Obus comprenant un chargement d'explosif (1) disposé dans un corps (2) et initié par un dispositif d'amorçage, obus caractérisé en ce que le dispositif d'amorçage est contenu dans un boítier (14) fixé par un premier moyen de liaison démontable au niveau d'une partie arrière du corps (2) de l'obus et assurant l'initiation du chargement explosif au travers d'une paroi (12) de fond de l'obus, une ogive perforante pleine (11) étant fixée au niveau de l'alésage avant (5) de l'obus par un deuxième moyen de liaison démontable.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9803513A FR2776372B1 (fr) | 1998-03-19 | 1998-03-19 | Obus perforant anti structures betonnees et dispositif de conversion permettant d'obtenir un tel obus perforant a partir d'un obus explosif |
FR9803513 | 1998-03-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0943887A1 true EP0943887A1 (fr) | 1999-09-22 |
EP0943887B1 EP0943887B1 (fr) | 2003-05-14 |
Family
ID=9524347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99104144A Expired - Lifetime EP0943887B1 (fr) | 1998-03-19 | 1999-03-02 | Dispositif de conversion permettant d'obtenir un obus perforant anti structures bétonnées à partir d'un obus explosif et obus perforant obtenu avec un tel dispositif |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0943887B1 (fr) |
DE (1) | DE69907791T2 (fr) |
FR (1) | FR2776372B1 (fr) |
NO (1) | NO318138B1 (fr) |
ZA (1) | ZA992140B (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005026652A1 (fr) * | 2003-09-17 | 2005-03-24 | Ruag Land Systems | Projectile perforant |
EP1978327A3 (fr) * | 2007-04-05 | 2010-06-23 | JUNGHANS Microtec GmbH | Projectile pénétrant |
US8985026B2 (en) | 2011-11-22 | 2015-03-24 | Alliant Techsystems Inc. | Penetrator round assembly |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014109077A1 (de) * | 2014-06-27 | 2015-12-31 | Rheinmetall Waffe Munition Gmbh | Artilleriegeschoss |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR843734A (fr) * | 1937-09-21 | 1939-07-10 | Projectile explosif | |
FR847239A (fr) | 1938-12-08 | 1939-10-05 | Obus aérodynamique sans fusée | |
FR2343988A1 (fr) * | 1976-03-09 | 1977-10-07 | Rheinmetall Gmbh | Projectile de combat ou d'exercice |
GB2006397A (en) * | 1977-10-12 | 1979-05-02 | Oerlikon Buehrle Ag | Projectile |
FR2572512A1 (fr) | 1984-10-25 | 1986-05-02 | Luchaire Sa | Dispositif, adaptable sur engins ou munitions, tels que projectiles d'artillerie, destine a reduire leur trainee de culot |
DE4033754A1 (de) | 1990-10-24 | 1992-04-30 | Rheinmetall Gmbh | Geschoss |
-
1998
- 1998-03-19 FR FR9803513A patent/FR2776372B1/fr not_active Expired - Fee Related
-
1999
- 1999-03-02 DE DE69907791T patent/DE69907791T2/de not_active Expired - Fee Related
- 1999-03-02 EP EP99104144A patent/EP0943887B1/fr not_active Expired - Lifetime
- 1999-03-17 NO NO19991303A patent/NO318138B1/no not_active IP Right Cessation
- 1999-03-17 ZA ZA9902140A patent/ZA992140B/xx unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR843734A (fr) * | 1937-09-21 | 1939-07-10 | Projectile explosif | |
FR847239A (fr) | 1938-12-08 | 1939-10-05 | Obus aérodynamique sans fusée | |
FR2343988A1 (fr) * | 1976-03-09 | 1977-10-07 | Rheinmetall Gmbh | Projectile de combat ou d'exercice |
GB2006397A (en) * | 1977-10-12 | 1979-05-02 | Oerlikon Buehrle Ag | Projectile |
FR2572512A1 (fr) | 1984-10-25 | 1986-05-02 | Luchaire Sa | Dispositif, adaptable sur engins ou munitions, tels que projectiles d'artillerie, destine a reduire leur trainee de culot |
DE4033754A1 (de) | 1990-10-24 | 1992-04-30 | Rheinmetall Gmbh | Geschoss |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005026652A1 (fr) * | 2003-09-17 | 2005-03-24 | Ruag Land Systems | Projectile perforant |
EP1978327A3 (fr) * | 2007-04-05 | 2010-06-23 | JUNGHANS Microtec GmbH | Projectile pénétrant |
US8985026B2 (en) | 2011-11-22 | 2015-03-24 | Alliant Techsystems Inc. | Penetrator round assembly |
Also Published As
Publication number | Publication date |
---|---|
NO991303D0 (no) | 1999-03-17 |
FR2776372A1 (fr) | 1999-09-24 |
DE69907791T2 (de) | 2004-03-11 |
NO991303L (no) | 1999-09-20 |
DE69907791D1 (de) | 2003-06-18 |
EP0943887B1 (fr) | 2003-05-14 |
ZA992140B (en) | 1999-10-21 |
NO318138B1 (no) | 2005-02-07 |
FR2776372B1 (fr) | 2000-08-04 |
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