EP3114426A1 - VERFAHREN ZUR HERSTELLUNG EINES GROßKALIBRIGEN GEFECHTSKOPFES UND GEFECHTSKOPF, HERGESTELLT NACH DIESEM VERFAHREN - Google Patents
VERFAHREN ZUR HERSTELLUNG EINES GROßKALIBRIGEN GEFECHTSKOPFES UND GEFECHTSKOPF, HERGESTELLT NACH DIESEM VERFAHRENInfo
- Publication number
- EP3114426A1 EP3114426A1 EP15707987.2A EP15707987A EP3114426A1 EP 3114426 A1 EP3114426 A1 EP 3114426A1 EP 15707987 A EP15707987 A EP 15707987A EP 3114426 A1 EP3114426 A1 EP 3114426A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- warhead
- explosive charge
- casing
- warhead casing
- 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
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
- F42B12/207—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 the explosive material or the construction of the high explosive warhead, e.g. insensitive ammunition
-
- 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
- F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
- F42B12/76—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing
- F42B12/80—Coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
- F42B33/02—Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges
- F42B33/0214—Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges by casting
Definitions
- the invention relates to a method for producing a large-caliber warhead with a warhead casing which encloses an explosive charge made of plastic-bonded explosive, wherein a compensation layer of an elastic material is arranged between the explosive charge and the inner wall of the warhead casing.
- the invention further relates to a large-caliber explosive projectile produced by this process.
- the insensitive explosive must be decoupled from the inner wall of the projectile in the projectile casing. Due to the different volume expansion behavior of the explosive and the bullet casing material with temperature fluctuations, this decoupling is necessary so that no cracks occur in the explosive.
- DE 10 2012 000 01 1 A1 discloses a spin-stabilized explosive projectile with a charge envelope (liner) between the projectile casing and the explosive charge made of an elastic material. In order to avoid cracking of the explosive charge in the region of the central longitudinal axis, a separating web is arranged centrally along the longitudinal axis.
- a liner with at least one bead or a cam to prevent slippage of the liner is described in DE 10 2006 034 891 A1.
- the lining of the bullet inner body is usually carried out by a plastic hollow body, for example, a blow-molded plastic, a so-called liner. This is introduced before pouring the explosive charge in the metal projectile body and brought by air and heat in its desired form.
- Another method is known for example from EP 1 338 860 B1. It should cause a decoupling of the explosive charge from the inner wall of the warhead casing due to the different volumetric expansion coefficients of the explosive charge and the warhead casing material, a temperature elastic bag-shaped plastic shell. This is introduced before the introduction of the explosive charge via a mouth hole of the warhead casing in the interior of the warhead casing.
- a disadvantage of the known method is, inter alia, that the mouth hole used for screwing a detonator has a small diameter, so that both the introduction and positioning of the liner in the interior of the warhead casing and the introduction of the usually high-viscosity castable explosive charge in the liner are extremely time consuming. Since the known liner material is often not sufficiently elastic and moreover has large tolerances in terms of its length and diameter, the liner must be folded several times during insertion into the warhead casing, and the resulting "wrinkles" must be adapted to the internal geometry of the warhead casing in several steps ,
- a method for producing a large-caliber explosive projectile, with an integrated between the explosive charge and the inner wall of the projectile casing elastic liner is disclosed in DE 10 2009 022 495 A1.
- the projectile casing is designed in two parts, the introduction of the liner into the rear-side projectile casing section and the explosive charge into the liner taking place before the two projectile casing sections are connected to one another.
- US 5,054,399 A discloses an artillery or ammunition casing having a hollow outer casing with a shock-weakening inner lining of successive layers of decreasing acoustic impedance material. This is intended to reduce the shock sensitivity and the cookoff sensitivity of the ammunition.
- the invention has for its object to provide a method of the type mentioned, in which also with regard to temperature fluctuations by means of a leveling layer complete decoupling of the explosive is ensured by the warhead.
- the leveling layer is exactly on the inner wall of the warhead casing, so that surface defects such as dents / bumps etc. are compensated, which could be located between the leveling layer and the inner wall of the warhead casing (avoid wrinkles).
- a warhead is to be disclosed, which is produced by this method.
- the invention is based essentially on the idea of not using as a leveling layer between the explosive charge and the inner wall of the warhead casing a prefabricated plastic sheath which must be introduced through the relatively narrow mouth of the warhead casing in the interior of the warhead casing, but to provide a double inner coating, the can be easily introduced through the mouth of the warhead casing in this.
- the first coating applied to the inner wall of the warhead casing and serving as a binding layer has a low adhesion to the second coating directly adjoining the first coating on the explosive charge side.
- the elastically formed, second coating is chosen such that it has the same (but at least substantially the same) chemical composition as the plastic binder of the explosive charge.
- the explosive charge combines conclusive with the second coating, so that a separation of the two adhesive partners after the polymerization of the contents of the explosive charge is no longer possible. Since the first coating has only a low adhesion to the second coating, and thus also to the explosive charge, the required decoupling between warhead casing and explosive charge is ensured.
- the first coating with low adhesion is first applied to the inner wall of the warhead casing in which this coating is spray-lacquered or "swung out.”
- the coating is adjusted to a low viscosity with a suitable dilution and introduced by " Panning "applied to the surface.
- the second coating is then applied thereon, whose material corresponds to the plastic binder of the explosive. This is done analogously to the first coating.
- the plastic-bonded explosive charge is introduced in the casting process into the internally coated warhead casing.
- the warhead casing consists of a corrosive material, such as steel
- the already required corrosion protection color anti-rust color
- an adhesion-reducing anti-corrosion additive Such coatings with these properties are commercially available and known.
- the invention provides that a double inner coating is integrated as a compensation layer between the explosive charge and the inner wall of the warhead casing.
- the first coating applied to the inner wall of the warhead casing serves as a bonding layer with a low adhesion.
- the explosive charge side is bonded to the first coating in a materially bonded manner between second coating tion and explosive subsequent second coating is chosen such that it has the same (at least substantially the same) chemical composition as the plastic binder of the explosive charge.
- the warhead 1 comprises a warhead casing 2 made of steel with a bottom part 3 and an ogival front part 4, in which there is a mouth hole 5 into which a head detonator (not shown) can be screwed.
- the warhead casing 2 encloses an explosive charge 6 made of a plastic-bound, insensitive explosive mixture, wherein a compensation layer 8 is arranged between the explosive charge 6 and the inner wall 7 of the warhead casing 2.
- the compensation layer 8 is composed of two different, coherently interconnected coatings 9, 10 together.
- the first coating 9 consists of a commercially available anticorrosive paint (antirust paint) which, in contrast to standard anticorrosive paints, has a defined content of adhesion-reducing constituents, so that the hardened inner coating has reduced adhesion to soiling or other coatings.
- Such anticorrosion paints may be Rhenotherm Jumbo I / II / III, with an additive that reduces the adhesion of the anticorrosive paint to the second coating (for example, ETFE / PFA / FEP).
- the second coating 10 consists of an elastic plastic whose composition can correspond to that of the plastic binder of the explosive charge.
- polyurethane is used as a plastic binder of a hexogen and / or octogen-containing explosive mixture, and the second coating 10 is preferably made of polyurethane.
- the applied layer thickness is dependent on the internal volume and the expected temperature and environmental influences. For example, for an internal volume of 3 dm 3 to 10 dm 3 and an applied temperature of - 52 ° C to + 71 ° C, the layer thickness should be approximately 0.5 to 1 mm.
- the first coating 9 with the adhesion-reducing additive is first applied to the inner wall 7 of the warhead casing 2, in which the coating is preferably applied through the mouth hole 5, for example by spray painting.
- the second coating 10 is applied to it, in which coating is also preferably painted or "swung out" through the mouth hole 5.
- the plastic-bound explosive charge 6 is finally introduced into the internally coated warhead casing 2 in the casting process. After curing of the explosive charge 6 then the mouth hole 5 can be closed by a jackscrew or possibly directly by a head igniter. LIST OF REFERENCE NUMBERS
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Manufacturing & Machinery (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15707987T PL3114426T3 (pl) | 2014-03-07 | 2015-03-06 | Sposób wytwarzania wielkokalibrowej głowicy bojowej i głowica bojowa wytworzona według tego sposobu |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201410103105 DE102014103105B3 (de) | 2014-03-07 | 2014-03-07 | Verfahren und Herstellung eines großkalibrigen Gefechtskopfes und Gefechtskopf, hergestellt nach diesem Verfahren |
| PCT/EP2015/054713 WO2015132381A1 (de) | 2014-03-07 | 2015-03-06 | VERFAHREN ZUR HERSTELLUNG EINES GROßKALIBRIGEN GEFECHTSKOPFES UND GEFECHTSKOPF, HERGESTELLT NACH DIESEM VERFAHREN |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3114426A1 true EP3114426A1 (de) | 2017-01-11 |
| EP3114426B1 EP3114426B1 (de) | 2018-05-02 |
Family
ID=51899703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15707987.2A Active EP3114426B1 (de) | 2014-03-07 | 2015-03-06 | Verfahren zur herstellung eines grosskalibrigen gefechtskopfes und gefechtskopf, hergestellt nach diesem verfahren |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP3114426B1 (de) |
| DE (1) | DE102014103105B3 (de) |
| DK (1) | DK3114426T3 (de) |
| ES (1) | ES2678368T3 (de) |
| LT (1) | LT3114426T (de) |
| PL (1) | PL3114426T3 (de) |
| WO (1) | WO2015132381A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013021030A1 (de) | 2013-12-17 | 2015-06-18 | Rheinmetall Waffe Munition Gmbh | Gefechtskopf und Sprengladungsmodul für einen derartigen Gefechtskopf |
| DE102015005980A1 (de) | 2015-05-08 | 2016-11-10 | Diehl Bgt Defence Gmbh & Co. Kg | Sprengladung mit vogegebenem Volumen und vorgegebener äußerer Form sowie Geschoss |
| EP3762199A1 (de) * | 2018-03-05 | 2021-01-13 | BAE SYSTEMS plc | Vordefinierte vertiefung |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4011818A (en) * | 1976-04-01 | 1977-03-15 | The United States Of America As Represented By The Secretary Of The Navy | Warhead explosive liner |
| US5054399A (en) * | 1988-07-05 | 1991-10-08 | The United States Of America As Represented By The Secretary Of The Air Force | Bomb or ordnance with internal shock attenuation barrier |
| DE10207209A1 (de) * | 2002-02-21 | 2003-09-11 | Rheinmetall W & M Gmbh | Verfahren zur Herstellung eines großkalibrigen Sprenggeschosses und Sprenggeschoß, hergestellt nach diesem Verfahren |
| DE102005050973A1 (de) * | 2005-10-25 | 2007-04-26 | Rheinmetall Waffe Munition Gmbh | Sprenggeschoss |
| DE102006034891A1 (de) * | 2006-07-25 | 2008-02-07 | Rheinmetall Waffe Munition Gmbh | Liner |
| DE102009022495A1 (de) * | 2009-05-25 | 2010-12-02 | Rheinmetall Waffe Munition Gmbh | Verfahren zur Herstellung eines großkalibrigen Sprenggeschosses und Sprenggeschoss, hergestellt nach diesem Verfahren |
| DE102012000011A1 (de) * | 2012-01-02 | 2013-07-04 | Rheinmetall Waffe Munition Gmbh | Drallstabilisiertes Sprenggeschoss |
-
2014
- 2014-03-07 DE DE201410103105 patent/DE102014103105B3/de not_active Expired - Fee Related
-
2015
- 2015-03-06 DK DK15707987.2T patent/DK3114426T3/en active
- 2015-03-06 PL PL15707987T patent/PL3114426T3/pl unknown
- 2015-03-06 WO PCT/EP2015/054713 patent/WO2015132381A1/de not_active Ceased
- 2015-03-06 EP EP15707987.2A patent/EP3114426B1/de active Active
- 2015-03-06 ES ES15707987.2T patent/ES2678368T3/es active Active
- 2015-03-06 LT LTEP15707987.2T patent/LT3114426T/lt unknown
Also Published As
| Publication number | Publication date |
|---|---|
| LT3114426T (lt) | 2018-07-10 |
| EP3114426B1 (de) | 2018-05-02 |
| ES2678368T3 (es) | 2018-08-10 |
| WO2015132381A1 (de) | 2015-09-11 |
| DK3114426T3 (en) | 2018-07-16 |
| PL3114426T3 (pl) | 2018-10-31 |
| DE102014103105B3 (de) | 2014-12-04 |
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