EP1363103A1 - Charge formée et procédé de montage d'une telle charge formée - Google Patents
Charge formée et procédé de montage d'une telle charge formée Download PDFInfo
- Publication number
- EP1363103A1 EP1363103A1 EP03291091A EP03291091A EP1363103A1 EP 1363103 A1 EP1363103 A1 EP 1363103A1 EP 03291091 A EP03291091 A EP 03291091A EP 03291091 A EP03291091 A EP 03291091A EP 1363103 A1 EP1363103 A1 EP 1363103A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring
- envelope
- coating
- load
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000002360 explosive Substances 0.000 claims abstract description 33
- 239000011248 coating agent Substances 0.000 claims abstract description 32
- 238000000576 coating method Methods 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims description 12
- 238000010079 rubber tapping Methods 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 241000422252 Cales Species 0.000 description 8
- 230000000295 complement effect Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- -1 polysiloxane Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
-
- 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
- F42B1/036—Manufacturing processes therefor
Definitions
- the technical field of the invention is that of the charges formed, ie loads comprising a load explosive disposed in an envelope and an applied coating on the loading.
- Charges are generally designed to be place in a well defined geometry envelope. most often the explosive charge is poured inside of the envelope and the coating is glued on a front face empty of the explosive charge.
- the patent FR2669721 also proposes means to compensate for thermal expansion between explosive charge and the envelope. These means include a annular filling of a compressible material (for example a polysiloxane elastomer) which is interposed between the load envelope and the explosive charge.
- a compressible material for example a polysiloxane elastomer
- the patent FR2669721 proposes to provide a shoulder support placed in front of the coating with interposition a spring washer to compensate for dilatation thermal.
- the rear support is ensured by a lid welded that will carry the detonator.
- the charge formed according to the invention comprises means ensuring in a simple and reliable way a solidarization envelope and loading. These means being furthermore adaptable to an envelope having an internal diameter different.
- the charge according to the invention also comprises means ensuring a simple way of centering the load and detonator even when there is a radial play between the envelope and the load.
- the invention also relates to an assembly method of such a formed charge.
- the subject of the invention is a shaped charge comprising an explosive charge disposed in an envelope, a coating applied to the load, and means ensuring the fastening of the envelope and the loading carrying the coating, characterized in that the securing means comprise a ring having a abutment surface for the coating, and at least two shims each covering an angular sector, shims moving radially with respect to the ring by the action of a means of tightening, to come against a bearing surface internal envelope.
- the clamping means may comprise at least one screw for each shim, screws cooperating with a tapped hole in the ring and the end of which will push the hold during screwing the screw.
- At least one screw may present a throat near its end, this screw lodging in a tapping of the wedge which leads into a counterbore internal.
- each shim may have a conical outer profile intended to cooperate with an inner surface of the envelope forming a support conical to ensure the axial retention of the load by report to the envelope.
- the ring may comprise an external cylindrical profile guiding the ring relative to the envelope.
- the ring may also include a scope internal cylindrical surrounding an outer rim of the coating.
- the shaped charge may comprise a spring washer interposed between the coating and the abutment surface of the Ring.
- the load may include four holds regularly angularly distributed.
- the holds may not cover all the outer profile of the ring and will therefore be separated by grooves.
- the formed charge may comprise a centering cap receiving the explosive charge, base with a range outer cylindrical fitting into a cylindrical bore of the envelope.
- the base may carry an axial bore intended for receive a detonator.
- the load may comprise an annular space disposed between the explosive charge and the envelope, filled space of a compressible material.
- At least one layer of a material compressible between the envelope and the explosive charge before capping the coating with a ring, at least one layer of a material compressible between the envelope and the explosive charge.
- a shaped charge 1 according to the invention comprises an explosive charge 2 disposed in an envelope 3.
- a conical coating 4 is applied on the loading which carries for this purpose a cavity of form complementary to the coating.
- the explosive charge carries at its other end an explosive initiator 30 as well as a wave conformation screen 31.
- the casing 3 has a bore 5 which has three cylindrical bearing surfaces 5a, 5b and 5c separated by two portions conical 6a and 6b.
- the median cylindrical portion 5b presents therefore a diameter greater than that of the cylindrical parts 5a and 5c.
- This envelope is made of steel.
- An annular space 7 is interposed between the loading explosive 2 and envelope 3. This space is intended for allow relative thermal expansions of the load explosive and envelope. It will be advantageously filled by a compressible material (not shown) which can be put in place before positioning the explosive charge. We can then realize and position in the envelope a polyurethane foam tube.
- the compressible material may also be a elastomer injected into the annular space as described by the patent FR2669721.
- the load 1 comprises means ensuring the joining of the envelope 3 and the loading 2 carrying the coating 4.
- These securing means 8 comprise a ring 9 which has an abutment surface 10 (see also FIG. 3b) for the coating 4, and at least two shims 11a, 11b which each cover an angular sector.
- abutment surface 10 see also FIG. 3b
- shims 11a, 11b which each cover an angular sector.
- four holds are planned (see Figure 2).
- a conical spring washer 23 is interposed between the coating 4 and the abutment surface 10 of the ring 9. This washer 23 makes it possible to compensate the axial clearances as well as the differential thermal expansions between the coating and the explosive charge.
- the shims 11 can move radially relative to each other to the ring by the action of a clamping means constituted by screws 12a, 12b.
- a clamping means constituted by screws 12a, 12b.
- Each screw cooperates with a tapping 16 which is arranged in the ring 9. The end of each screw pushes therefore the wedge when screwing the screw.
- At least one screw 12a per sector has a throat 13 which is located near its end. This screw is lodged in a tapping 14 of the hold which opens into a internal counterbore 15.
- Such a screw is called “captive”. Indeed the screw engages in the tapping 16 of the ring then in that (14) of the hold 11.
- the tapping 14 of the hold has a length reduced by about 2 to 3 mm and less than the length of the throat 13.
- the screw 12a can no longer be removed from the hold once the groove 13 is next to the tapping 14. This ensures a fastening wedges 11 and the ring 9 during assembly operations.
- FIGS. 2 to 4b show a means of fastening 8 associating four shims 11 to a ring 9.
- Each shim is pushed by three screws, a captive screw 12a and two normal screws 12b which are arranged on the else of the captive screw.
- the axes of the three screws associated with a wedge are parallel to each other.
- Each shim 11 has a conical outer profile 18 which is intended to cooperate with the conical portion 6a of the internal surface of the envelope.
- Each shim 11 also has an internal profile conical 19 which is intended to cooperate with a conical profile complementary 20 arranged on the ring 9.
- the ring 9 also has a cylindrical profile external 21 which has the same diameter as the cylindrical scope 5a and which ensures the guiding of the ring 9 by to the envelope 3.
- An O-ring may be available (not shown) in a gorge fitted on this profile external to improve the seal.
- the ring 9 also has a cylindrical bearing internal 22 surrounding an outer edge of the coating 4 and ensuring a centering of the ring 9 relative to the load.
- the ring 9 finally has a peripheral groove 24 in which slides radially shims 11a, 11b, 11c and 11d.
- the shims 11 will not cover in their tight position (see Figure 2) all profile outer circular ring 9. Grooves 34 will separate thus the shims and at least one of the grooves will be arranged in look at a peripheral groove (not shown) by the ring 9.
- Such an arrangement makes it possible to position a wire guide (not shown), made of metal material or not, and which will ensure the passage of the control wires of firing between a rocket (not shown) of the ammunition and a detonator 29.
- FIGS. 3a and 3b show the securing means 8 in its loose position. 12b screws are completely loosened and screws 12a then allow to bring the holds 11 in contact with the ring 9 at their staves complementary conics 19 and 20. In this position the outermost diameter of the means 8 is that of the profile outer cylindrical ring 21 of the ring 9. The ring bearing the four holds 11 can therefore be introduced without difficulty to the inside of the envelope 3.
- FIGS. 4a and 4b show the securing means 8 in its blocking position.
- the screws 12a and 12b all have been tightened and they radially pushed the wedges 11 which then give means 8 an external diameter greater than that of the external cylindrical profile 21 of the ring 9.
- the holds can thus come to apply against a internal bearing surface of the casing 3 (the conical surface 6a) and secure the explosive charge 2 by to the envelope 3.
- the charge 1 has a centering cap 25 which has a bowl 25 receiving the explosive charge 2.
- That base 25 contains an outer cylindrical bearing surface 27 which has the same diameter as the cylindrical bearing surface 5c of the casing 3.
- the base 25 also carries an axial bore 28 for receive the detonator 29.
- another wire guide (not shown) will be interposed between the rear pellet 25 and the envelope 3 at a peripheral groove. This guide wire will drive the electrical wires ensuring the firing the detonator.
- a securing means 8 according to the invention. This means is kept in storage in the loosened position shown in Figures 3a and 3b.
- an explosive charge block was manufactured 2 carrying a coating 4 and priming means 30.
- the explosive charge is positioned first in the pellet 25 and then the whole pellet / loading is placed in the envelope 3 placed on a table 33.
- the cover 4 is then capped with the ring 9 interposing the spring washer 23.
- An advantage of the invention is that base 25 and ring 9 ensure perfect centering of the explosive charge by relative to the envelope even if the median cylindrical profile 5b is in the raw state.
- the base 25 makes it possible to ensure a centering perfect detonator 29 compared to the explosive charge. Indeed this centering results solely from the coaxiality of the bowl 26 and the bore 28. A slight misalignment of the cylindrical bearings 5a and 5b is therefore without effect on the accuracy of priming that results solely from the geometry of the base 25.
- the charge formed and the process according to the invention are thus particularly adapted to the "retrofit" of ammunition, that is to say to the setting up of a shaped charge (which has been developed for a given ammunition) on the inside another envelope of different diameter. It is sufficient that this envelope comprises cylindrical centering spans 5a, 5c which is generally the case.
- the shims can be given external profiles different in order to adapt the invention to geometries different envelopes.
- the envelope to equip is devoid of conical bearing 6a, it will thus be possible to give the wedges 11 an external profile cylindrical having a knurling or indentations so to ensure when tightening wedges the hooking of these last on the inner surface of the envelope 3 so the blocking the explosive charge relative to the envelope.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Connection Of Plates (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Photoreceptors In Electrophotography (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Description
- on positionne à l'intérieur d'une enveloppe un chargement explosif disposé dans un culot ajusté à un diamètre intérieur de l'enveloppe, chargement portant un revêtement,
- on coiffe le revêtement avec une bague comportant un profil cylindrique externe assurant le guidage de la bague par rapport à l'enveloppe, bague portant au moins deux cales couvrant chacune un secteur angulaire, cales pouvant s'écarter radialement de la bague lors du vissage de vis de maintien pour venir en butée contre une surface d'appui,
- on visse les vis de maintien de façon à appliquer les cales contre la surface d'appui interne de l'enveloppe.
- la figure 1 et une vue en coupe longitudinale d'une charge formée selon l'invention,
- la figure 2 est une vue en coupe transversale de la bague portant les cales, coupe réalisée dans le plan contenant les axes des différentes vis,
- les figures 3a et 4a sont des coupes réalisées suivant le plan dont la trace AA est repérée sur la figure 2, la figure 3a montrant les cales dans leur position deserrée et la figure 4a montrant les cales en position de serrage,
- les figures 3b et 4b sont des coupes réalisées suivant le plan dont la trace BB est repérée sur la figure 2, la figure 3b montrant les cales dans leur position deserrée et la figure 4b montrant les cales en position de serrage.
Claims (15)
- Charge formée (1) comprenant un chargement explosif (2) disposé dans une enveloppe (3), un revêtement (4) appliqué sur le chargement, et des moyens (8) assurant la solidarisation de l'enveloppe (3) et du chargement (2) portant le revêtement (4), charge caractérisé en ce que les moyens de solidarisation comprennent une bague (9) présentant une surface de butée (10) pour le revêtement (4), et au moins deux cales (11) couvrant chacune un secteur angulaire, cales se déplaçant radialement par rapport à la bague (9) par l'action d'un moyen de serrage (12), pour venir s'appliquer contre une surface d'appui interne (6a) de l'enveloppe (3).
- Charge formée selon la revendication 1, caractérisée en ce que le moyen de serrage comprend au moins une vis (12a,12b) pour chaque cale (11), vis coopérant avec un taraudage (16) aménagé dans la bague (9) et dont l'extrémité pousse la cale (11) lors du vissage de la vis.
- Charge formée selon la revendication 2, caractérisée en ce qu'au moins une vis (12a) présente une gorge (13) au voisinage de son extrémité, cette vis se logeant dans un taraudage (16) de la cale qui débouche dans un lamage interne (15).
- Charge formée selon une des revendications 1 à 3, caractérisée en ce que chaque cale (11) comporte un profil externe conique (18) destiné à coopérer avec une surface interne (6a) de l'enveloppe formant un appui conique pour assurer le maintien axial de la charge par rapport à l'enveloppe (3).
- Charge formée selon une des revendications 1 à 4, caractérisée en ce que la bague (9) comporte un profil cylindrique externe (21) assurant le guidage de la bague (9) par rapport à l'enveloppe (3).
- Charge formée selon la revendication 5, caractérisée en ce que la bague comporte une portée cylindrique interne (22) entourant un rebord externe du revêtement (4).
- Charge formée selon une des revendications 1 à 6, caractérisée en ce qu'elle comporte une rondelle ressort (23) interposée entre le revêtement (4) et la surface de butée (10) de la bague (9).
- Charge formée selon une des revendications 1 à 7, caractérisée en ce qu'elle comporte quatre cales (11a,11b,11c,11d) régulièrement réparties angulairement.
- Charge formée selon une des revendications 1 à 8, caractérisée en ce que les cales (11) ne couvrent pas tout le profil externe de la bague et sont séparées par des rainures (34).
- Charge formée selon une des revendications 1 à 9, caractérisée en ce qu'elle comporte un culot de centrage (25) recevant le chargement explosif (2), culot comportant une portée cylindrique externe (27) ajustée dans un alésage cylindrique (5c) de l'enveloppe (3).
- Charge formée selon la revendication 10, caractérisée en ce que le culot (25) porte un alésage axial (28) destiné à recevoir un détonateur (29).
- Charge formée selon une des revendications 1 à 11, caractérisée en ce qu'elle comporte un espace annulaire (7) entre le chargement explosif (2) et l'enveloppe (3), espace rempli d'un matériau compressible.
- Procédé de montage d'une charge formée selon une des revendications 2 à 12, procédé caractérisé par les étapes suivantes:on positionne à l'intérieur d'une enveloppe (3) un chargement explosif (2) disposé dans un culot (25) ajusté à un diamètre intérieur de l'enveloppe, chargement portant un revêtement (4),on coiffe le revêtement (4) avec une bague (9) comportant un profil cylindrique externe (21) assurant le guidage de la bague par rapport à l'enveloppe (3), bague portant au moins deux cales (11) couvrant chacune un secteur angulaire, cales pouvant s'écarter radialement de la bague (9) lors du vissage de vis de maintien (12) pour venir en butée contre une surface d'appui,on visse les vis de maintien (12) de façon à appliquer les cales (11) contre la surface d'appui interne de l'enveloppe (3).
- Procédé de montage d'une charge formée selon la revendication 13, procédé caractérisé en ce que, après vissage des cales (11), on injecte un matériau compressible entre l'enveloppe (3) et le chargement explosif (2).
- Procédé de montage d'une charge formée selon la revendication 13, procédé caractérisé en ce que, avant de coiffer le revêtement avec une bague (9), on dispose au moins une couche d'un matériau compressible entre l'enveloppe (3) et le chargement explosif (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0206056A FR2839777B1 (fr) | 2002-05-16 | 2002-05-16 | Charge formee et procede de montage d'une telle charge formee |
| FR0206056 | 2002-05-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1363103A1 true EP1363103A1 (fr) | 2003-11-19 |
| EP1363103B1 EP1363103B1 (fr) | 2007-07-04 |
Family
ID=29266112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03291091A Expired - Lifetime EP1363103B1 (fr) | 2002-05-16 | 2003-05-06 | Charge formée et procédé de montage d'une telle charge formée |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1363103B1 (fr) |
| AT (1) | ATE366403T1 (fr) |
| DE (1) | DE60314681T2 (fr) |
| ES (1) | ES2290408T3 (fr) |
| FR (1) | FR2839777B1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015160378A1 (fr) * | 2014-04-15 | 2015-10-22 | Hunting Titan, Inc. | Système d'évacuation des gaz pour charge creuse en cas de déflagration |
| WO2019002219A1 (fr) | 2017-06-28 | 2019-01-03 | Nexter Munitions | Charge formée |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2723781C1 (ru) * | 2019-09-17 | 2020-06-17 | Акционерное общество "Конструкторское бюро приборостроения им. академика А.Г. Шипунова" | Кумулятивная боевая часть |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB578845A (en) * | 1942-11-11 | 1946-07-15 | James Taylor | Improvements in or relating to projectiles for use against armour plate and the like |
| US3002455A (en) * | 1955-04-12 | 1961-10-03 | Bofors Ab | Ballistic missile |
| US3437036A (en) * | 1966-04-20 | 1969-04-08 | Diehl | Hollow charge for land mines |
| FR2669721A1 (fr) | 1990-11-28 | 1992-05-29 | Commissariat Energie Atomique | Charge creuse. |
-
2002
- 2002-05-16 FR FR0206056A patent/FR2839777B1/fr not_active Expired - Fee Related
-
2003
- 2003-05-06 AT AT03291091T patent/ATE366403T1/de not_active IP Right Cessation
- 2003-05-06 ES ES03291091T patent/ES2290408T3/es not_active Expired - Lifetime
- 2003-05-06 DE DE60314681T patent/DE60314681T2/de not_active Expired - Lifetime
- 2003-05-06 EP EP03291091A patent/EP1363103B1/fr not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB578845A (en) * | 1942-11-11 | 1946-07-15 | James Taylor | Improvements in or relating to projectiles for use against armour plate and the like |
| US3002455A (en) * | 1955-04-12 | 1961-10-03 | Bofors Ab | Ballistic missile |
| US3437036A (en) * | 1966-04-20 | 1969-04-08 | Diehl | Hollow charge for land mines |
| FR2669721A1 (fr) | 1990-11-28 | 1992-05-29 | Commissariat Energie Atomique | Charge creuse. |
| EP0491587A1 (fr) * | 1990-11-28 | 1992-06-24 | Commissariat A L'energie Atomique | Charge creuse |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015160378A1 (fr) * | 2014-04-15 | 2015-10-22 | Hunting Titan, Inc. | Système d'évacuation des gaz pour charge creuse en cas de déflagration |
| US10648300B2 (en) | 2014-04-15 | 2020-05-12 | Hunting Titan, Inc. | Venting system for a shaped charge in the event of deflagration |
| WO2019002219A1 (fr) | 2017-06-28 | 2019-01-03 | Nexter Munitions | Charge formée |
| FR3068456A1 (fr) * | 2017-06-28 | 2019-01-04 | Nexter Munitions | Charge formee |
| US10782106B2 (en) | 2017-06-28 | 2020-09-22 | Nexter Munitions | Shaped charge |
| AU2018293145B2 (en) * | 2017-06-28 | 2023-11-02 | Knds Ammo France | Shaped charge |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2290408T3 (es) | 2008-02-16 |
| DE60314681T2 (de) | 2008-03-06 |
| ATE366403T1 (de) | 2007-07-15 |
| DE60314681D1 (de) | 2007-08-16 |
| FR2839777B1 (fr) | 2004-07-02 |
| FR2839777A1 (fr) | 2003-11-21 |
| EP1363103B1 (fr) | 2007-07-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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