EP3114426B1 - Method for producing a large-caliber warhead, and warhead produced according to said method - Google Patents
Method for producing a large-caliber warhead, and warhead produced according to said method Download PDFInfo
- Publication number
- EP3114426B1 EP3114426B1 EP15707987.2A EP15707987A EP3114426B1 EP 3114426 B1 EP3114426 B1 EP 3114426B1 EP 15707987 A EP15707987 A EP 15707987A EP 3114426 B1 EP3114426 B1 EP 3114426B1
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- Prior art keywords
- coating
- warhead
- explosive charge
- casing
- explosive
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Images
Classifications
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- 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
-
- 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
Definitions
- the invention relates to a method for producing a large-caliber warhead with a warhead casing which encloses an explosive charge of plastic-bonded explosive, wherein between the explosive charge and the inner wall of the warhead casing a leveling layer of an elastic material is arranged.
- 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.
- the DE 10 2012 000 011 A1 discloses a spin stabilized explosive projectile with a charge envelope (liner) between the projectile casing and the explosive charge.
- a separating web is arranged centrally along the longitudinal axis.
- a liner with at least one bead or cam to prevent slippage of the liner describes the 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 for example from the EP 1 338 860 B1 known. 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 shown in the DE 10 2009 022 495 A1 disclosed.
- the projectile casing is made in two parts, wherein the introduction of the liner in the rear-side projectile casing section and the explosive charge in the liner takes place before joining the two projectile casing together.
- Another explosive bullet reveals the DE 10 2005 050 973 A1
- a silicone intermediate layer is provided at least in partial areas between the explosive charge and the inner surface of the projectile body.
- the US 5,054,399 A discloses an artillery or ammunition casing having a hollow outer casing with a shock-weakening inner liner 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 casing.
- 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 Due to the identical chemical constituents of the second coating and the binder of the plastic-bound explosive, the explosive charge combines cohesively 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-painted or "swung out”. In this case, the coating is adjusted to a low viscosity with a suitable dilution and applied to the surface by introduction and "pivoting".
- 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 is made of a corrosive material, such as steel, it has proven to be advantageous if the already required corrosion protection color (anti-rust color) is used as the first coating, which is then admixed with an adhesion-reducing anti-corrosion additive.
- corrosion protection color anti-rust color
- 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 sprengladungs character to the first coating cohesively between the first coating 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, non-positive 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 proportion of adhesion-reducing constituents, so that the hardened inner coating has reduced adhesion to soiling or other coatings.
- 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
- 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-bonded explosive charge 6 is 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.
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines großkalibrigen Gefechtskopfes mit einer Gefechtskopfhülle, die eine Sprengladung aus kunststoffgebundenem Sprengstoff umschließt, wobei zwischen der Sprengladung und der Innenwand der Gefechtskopfhülle eine Ausgleichsschicht aus einem elastischen Material angeordnet ist. Die Erfindung bezieht sich ferner auf ein nach diesem Verfahren hergestelltes großkalibriges Sprenggeschoß.The invention relates to a method for producing a large-caliber warhead with a warhead casing which encloses an explosive charge of plastic-bonded explosive, wherein between the explosive charge and the inner wall of the warhead casing a leveling layer of an elastic material is arranged. The invention further relates to a large-caliber explosive projectile produced by this process.
Der insensitive Sprengstoff muss zur Innenwand des Geschosses entkoppelt in der Geschosshülle eingebracht sein. Aufgrund des unterschiedlichen Volumenausdehnungsverhaltens des Sprengstoffes und des Geschosshüllenwerkstoffs bei Temperaturschwankungen ist diese Entkoppelung notwendig, damit keine Risse im Sprengstoff entstehen.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.
Die
Einen Liner mit wenigstens einer Wulst oder einem Nocken zur Vermeidung des Rutschen des Liners beschreibt die
Die Auskleidung des Geschossinnenkörpers erfolgt in der Regel durch einen zum Beispiel in Blasformtechnik erzeugten Kunststoff-Hohlkörper, einem so genannten Liner. Dieser wird vor dem Gießen der Sprengladung in den metallenen Geschosskörper eingebracht und durch Luft-und Wärmebeaufschlagung in seine Sollform gebracht.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.
Ein weiteres Verfahren ist beispielsweise aus der
Nachteilig bei dem bekannten Verfahren ist unter anderem, dass das zum Einschrauben eines Kopfzünders verwendete Mundloch einen geringen Durchmesser aufweist, so dass sowohl das Einbringen und Positionieren des Liners in den Innenraum der Gefechtskopfhülle als auch das Einbringen der in der Regel hochviskosen gießbaren Sprengladung in den Liner außerordentlich zeitaufwendig sind. Da das bekannte Linermaterial häufig nicht ausreichend elastisch ist und überdies große Toleranzen hinsichtlich seiner Länge und Durchmesser aufweist, muss der Liner während des Einbringens in die Gefechtskopfhülle mehrfach gefaltet werden, und die dabei entstehenden "Knitterfalten" müssen der Innengeometrie der Gefechtskopfhülle in mehreren Arbeitsschritten angepasst werden.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 ,
Außerdem weisen bekannte Liner herstellungsbedingt im Bodenbereich häufig Verwerfungen und Dopplungen auf, die eine vollständige Auskleidung des bodenseitigen Bereiches der Gefechtskopfhülle verhindern.In addition, known liners due to the production in the floor area often faults and doubling, which prevent complete lining of the bottom region of the warhead casing.
Ein Verfahren zur Herstellung eines großkalibrigen Sprenggeschosses, mit einem zwischen der Sprengladung und der Innenwand der Geschosshülle eingebundenen elastischen Liner, wird in der
Aufgrund des häufig nicht vollflächig an der Gefechtskopfhülle anliegenden Liners kann es zu nicht erwünschten Verunreinigungen zwischen dem Liner und der Gefechtskopfhülle kommen.Due to the liner, which is often not applied to the entire surface of the warhead casing, undesired contamination between the liner and the warhead casing can occur.
Die
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs erwähnten Art anzugeben, bei dem ebenfalls im Hinblick auf Temperaturschwankungen mittels einer Ausgleichsschicht eine vollständige Entkopplung des Sprengstoffes von der Gefechtskopfhülle gewährleistet wird. Dabei liegt die Ausgleichsschicht exakt an der Innenwand der Gefechtskopfhülle an, so dass Oberflächenfehler wie Dellen / Beulen etc. ausgeglichen werden, die sich zwischen der Ausgleichsschicht und der Innenwand der Gefechtskopfhülle befinden könnten (Vermeidung einer Faltenbildung). Außerdem soll ein Gefechtskopf offenbart werden, welcher nach diesem Verfahren hergestellt ist.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 casing. In this case, 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). In addition, a warhead is to be disclosed, which is produced by this method.
Diese Aufgabe wird erfindungsgemäß hinsichtlich des Verfahrens durch die Merkmale des Anspruchs 1 und 6 hinsichtlich des Gefechtskopfes durch die Merkmale des Anspruchs gelöst. Weitere, besonders vorteilhafte Ausgestaltungen der Erfindung offenbaren die Unteransprüche.This object is achieved with respect to the method by the features of
Die Erfindung beruht im Wesentlichen auf dem Gedanken, als Ausgleichsschicht zwischen der Sprengladung und der Innenwand der Gefechtskopfhülle nicht eine vorgefertigte Kunststoffhülle zu verwenden, die durch das relative enge Mundloch der Gefechtskopfhülle in den Innenraum der Gefechtskopfhülle eingebracht werden muss, sondern eine doppelte Innenbeschichtung vorzusehen, die auf einfache Weise durch das Mundloch der Gefechtskopfhülle in diese eingebracht werden kann. Dabei weist die an der Innenwand der Gefechtskopfhülle anliegende und als Bindeschicht dienende erste Beschichtung ein geringes Haftvermögen gegenüber der sich sprengladungsseitig an die erste Beschichtung direkt anschließenden, zweiten Beschichtung auf. Die elastisch ausgebildete, zweite Beschichtung ist derart gewählt, dass sie die gleiche (zumindest aber im Wesentlichen gleiche) chemische Zusammensetzung aufweist wie der Kunststoffbinder der Sprengladung.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. In this case, 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.
Aufgrund der identischen chemischen Bestandteile der zweiten Beschichtung und dem Binder des kunststoffgebundenen Sprengstoffes verbindet sich die Sprengladung stoffschlüssig mit der zweiten Beschichtung, so dass eine Auftrennung der beiden Haftpartner nach der Polymerisation der Inhaltsstoffe der Sprengladung nicht mehr möglich ist. Da die erste Beschichtung gegenüber der zweiten Beschichtung, und damit auch gegenüber der Sprengladung, nur eine geringe Haftung aufweist, ist auch die erforderliche Entkopplung zwischen Gefechtskopfhülle und Sprengladung sichergestellt.
Zur Durchführung des Verfahrens der Erfindung wird zunächst auf die Innenwand der Gefechtskopfhülle die erste Beschichtung mit geringem Haftvermögen aufgebracht, in dem diese Beschichtung sprühlackiert oder "ausgeschwenkt" wird. Hierbei wird die Beschichtung mit einer geeigneten Verdünnung dünnflüssig eingestellt und durch ein Einbringen und "Schwenken" auf die Oberfläche aufgebracht.
Nach dem Trocknen der ersten Beschichtung wird dann auf dieser die zweite Beschichtung aufgetragen, deren Material dem Kunststoffbinder des Sprengstoffes entspricht. Hierzu wird analog der ersten Beschichtung verfahren.
Schließlich wird nach der Polymerisation der zweiten Beschichtung die kunststoffgebundene Sprengladung im Gießverfahren in die innenbeschichtete Gefechtskopfhülle eingebracht.
Für den Fall, dass die Gefechtskopfhülle aus einem korrodierenden Material, etwa Stahl, besteht, hat es sich als vorteilhaft erwiesen, wenn als erste Beschichtung die ohnehin erforderliche Korrosionsschutzfarbe (Rostschutzfarbe) verwendet wird, der dann ein das Haftvermögen der Korrosionsschutzfarbe vermindernder Zusatz beigemischt wird. Derartige Beschichtungen mit diesen Eigenschaften sind handelsüblich und bekannt.
Dabei haben sich als Zusätze zur Verringerung des Haftvermögens der Korrosionsschutzfarbe insbesondere ETFE / PFA / FEP oder PTFE als vorteilhaft erwiesen.
Um also zu erreichen, dass die Ausgleichsschicht exakt an der Innenwand der Gefechtskopfhülle anliegt, ist erfindungsgemäß vorgesehen, dass als Ausgleichsschicht zwischen der Sprengladung und der Innenwand der Gefechtskopfhülle eine doppelte Innenbeschichtung eingebunden ist. Die an der Innenwand der Gefechtskopfhülle anliegende erste Beschichtung dient als Bindeschicht mit einem geringen Haftvermögen. Die sich sprengladungsseitig an die erste Beschichtung stoffschlüssig zwischen erster Beschichtung und Sprengstoff anschließende zweite Beschichtung ist derart gewählt, dass sie die gleiche (zumindest im Wesentlichen gleiche) chemische Zusammensetzung aufweist wie der Kunststoffbinder der Sprengladung. Zwischen erster (haftreduzierter) Korrosionsschutzfarbe und zweiter "Binderbeschichtung" besteht eine geringe adhäsive Bindung, die bei der Temperatur abhängigen Volumendehnung / -schrumpfung des Sprengstoffes gewollt gelöst wird.Due to the identical chemical constituents of the second coating and the binder of the plastic-bound explosive, the explosive charge combines cohesively 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.
To carry out the method of the invention, the first coating with low adhesion is first applied to the inner wall of the warhead casing in which this coating is spray-painted or "swung out". In this case, the coating is adjusted to a low viscosity with a suitable dilution and applied to the surface by introduction and "pivoting".
After drying the first coating, 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.
Finally, after the polymerization of the second coating, the plastic-bonded explosive charge is introduced in the casting process into the internally coated warhead casing.
In the event that the warhead casing is made of a corrosive material, such as steel, it has proven to be advantageous if the already required corrosion protection color (anti-rust color) is used as the first coating, which is then admixed with an adhesion-reducing anti-corrosion additive. Such coatings with these properties are commercially available and known.
In this case, have proven to be advantageous as additives for reducing the adhesion of the anticorrosive paint in particular ETFE / PFA / FEP or PTFE.
Thus, in order to achieve that the compensation layer rests exactly on the inner wall of the warhead casing, 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 sprengladungsseitig to the first coating cohesively between the first coating 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. Between the first (adhesion-reduced) anticorrosive paint and the second "binder coating" there is a slight adhesive bond which is intentionally dissolved in the temperature-dependent volumetric expansion / shrinkage of the explosive.
Durch eine derartige Lösung wird eine Vereinfachung bzw. Beschleunigung der Fertigung sowie die Bearbeitbarkeit der insensitiven Sprengladung erreicht. Zudem werden spätere Sprengstoff-Fehler, wie Lunker oder Risse, verhindert. Es werden bislang auftretende Oberflächenverunreinigungen zwischen dem Liner und der Geschosshülleninnenwand verhindert. Des Weiteren ist eine exakte Anpassung des Liners an eine unregelmäßige Innengeometrie der Geschosshülle möglich. Das vollständige Füllen des Geschosskörpers erfolgt falten und fehlerfrei. Ein Rutschen des Liners wird ebenfalls wirkungsvoll unterbunden. Die Entkoppelung des Sprengstoffes von der Geschosshülle wird unter allen Bedingungen sichergestellt. Auch werden Verunreinigungen als auch Gießfehler im Sprengstoff verhindert. Zudem kann eine exakte Auskleidung bzw. Anpassung an eine unregelmäßige Innengeometrie der geschosshülle realisiert werden. Der Schutz des Sprengstoffes wird durch die stoffschlüssige Außen-Beschichtung geschaffen, was zudem zu einer eindeutigen Entkopplung des Sprengstoffes zur Geschosshülle führt.By such a solution, a simplification or acceleration of the production and the workability of the insensitive explosive charge is achieved. In addition, later explosive defects, such as voids or cracks, prevented. It prevents so far occurring surface contamination between the liner and the bullet casing inner wall. Furthermore, an exact adaptation of the liner to an irregular internal geometry of the projectile casing is possible. The complete filling of the projectile body is done folding and error-free. Slipping of the liner is also effectively prevented. The decoupling of the explosive from the projectile shell is ensured under all conditions. Also impurities and casting defects in the explosive are prevented. In addition, an exact lining or adaptation to an irregular internal geometry of the projectile casing can be realized. The protection of the explosive is created by the cohesive outer coating, which also leads to a clear decoupling of the explosive to the projectile casing.
Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus dem folgenden, anhand einer Figur erläuterten Ausführungsbeispiel.Further details and advantages of the invention will become apparent from the following, explained with reference to a figure embodiment.
In der Figur ist der Längsschnitt eines mit 1 bezeichneten, und nur schematisch dargestellten, drallstabilisierten Gefechtskopfes wiedergegeben, wie er beispielsweise aus einer Panzerhaubitze verschossen werden kann. Der Gefechtskopf 1 umfasst eine Gefechtskopfhülle 2 aus Stahl mit einem Bodenteil 3 und einem ogivalen Vorderteil 4, in dem sich ein Mundloch 5 befindet, in welches ein Kopfzünder (nicht dargestellt) einschraubbar ist.In the figure, the longitudinal section of a designated 1, and only schematically shown, spin-stabilized warhead reproduced, as he can be fired, for example, from a Panzerhaubitze. The warhead 1 comprises a warhead casing 2 made of steel with a bottom part 3 and an
Die Gefechtskopfhülle 2 umschließt eine Sprengladung 6 aus einer kunststoffgebundenen, insensitive Sprengstoff-Mischung, wobei zwischen der Sprengladung 6 und der Innenwand 7 der Gefechtskopfhülle 2 eine Ausgleichsschicht 8 angeordnet ist.The warhead casing 2 encloses an
Erfindungsgemäß setzt sich die Ausgleichsschicht 8 aus zwei unterschiedlichen, kraftschlüssig miteinander verbundenen Beschichtungen 9, 10 zusammen. Dabei besteht die erste Beschichtung 9 aus einer handelsüblichen Korrosionsschutzfarbe (Rostschutzfarbe), die im Gegensatz zu Standard- Korrosionsschutzfarben einen definierten Anteil an haftreduzierenden Inhaltstoffen aufweist, so dass die ausgehärtete Innenbeschichtung eine reduzierte Haftung gegenüber Verschmutzungen oder anderen Beschichtungen besitzt, aufweist. Derartige Rostschutzfarben können sein Rhenotherm Jumbo I / II / III, mit einem das Haftvermögen der Korrosionsschutzfarbe an der zweiten Beschichtung reduzierenden Zusatz (beispielsweise ETFE / PFA / FEP).According to the invention, the compensation layer 8 is composed of two different, non-positive interconnected
Die zweite Beschichtung 10 besteht aus einem elastischen Kunststoff, dessen Zusammensetzung derjenigen des Kunststoffbinders der Sprengladung entsprechen kann. Sofern also Polyurethan als Kunststoffbinder einer Hexogen und/oder Oktogen enthaltende Sprengstoffmischung verwendet wird, besteht auch die zweite Beschichtung 10 bevorzugt aus Polyurethan. Die aufzubringende Schichtdicke ist dabei abhängig vom Innenvolumen und den zu erwartenden Temperatur- und Umwelteinflüssen. So sollte zum Beispiel die Schichtdicke bei einem Innenvolumen von 3 dm3 bis 10 dm3 und einer einwirkenden Temperatur von - 52 °C bis + 71 °C ca.0,5 bis 1 mm betragen.The
Zur Herstellung des Gefechtskopfes 1 wird zunächst auf die Innenwand 7 der Gefechtskopfhülle 2 die erste Beschichtung 9 mit dem haftungsreduzierenden Zusatz aufgebracht, in dem bevorzugt durch das Mundloch 5 hindurch die Beschichtung beispielsweise per Sprühlackierung aufgebracht wird.For the production of the warhead 1, 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.
Nach dem Trocknen der ersten Beschichtung 9 wird auf dieser die zweite Beschichtung 10 aufgebracht, in dem ebenfalls durch das Mundloch 5 hindurch bevorzugt lackiert oder "ausgeschwenkt" wird.After the first coating 9 has dried, the
Nach der Polymerisation der zweiten Beschichtung 10 wird schließlich die kunststoffgebundene Sprengladung 6 im Gießverfahren in die innenbeschichtete Gefechtskopfhülle 2 eingebracht. Nach Aushärten der Sprengladung 6 kann dann das Mundloch 5 etwa durch eine Hebeschraube oder gegebenenfalls auch direkt durch einen Kopfzünder verschlossen werden.After the polymerization of the
- 11
- Gefechtskopfwarhead
- 22
- GefechtskopfhülleWarhead casing
- 33
- Bodenteilthe bottom part
- 44
- Vorderteilfront
- 55
- MundlochMundloch
- 66
- Sprengladungexplosive charge
- 77
- Innenwandinner wall
- 88th
- Ausgleichsschichtleveling layer
- 99
- (erste) Beschichtung(first) coating
- 1010
- (zweite) Beschichtung(second) coating
Claims (8)
- Method for producing a large-calibre warhead (1) with a warhead casing (2) that encloses an explosive charge (6) consisting of a plastic-bonded explosive material, wherein a compensation layer (8) consisting of an elastic material is arranged between the explosive charge (6) and the inner wall (7) of the warhead casing (2), wherein a double inner coating (9, 10) is provided as a compensation layer (8), having the features:a) a first coating (9) which has weak adhesiveness and serves as a bonding layer is first applied to the inner wall (7) of the warhead casing (2),b) after the first coating (9) has dried, a second coating (10), which consists of plastic and contains material that matches the plastic binder of the explosive charge (6) that is to be introduced into the warhead casing (2), is applied to the first coating, andc) after the polymerization of the second coating (10), the plastic-bonded explosive charge (6) is introduced into the internally coated warhead casing (2) by a pouring method, wherein a separation of the bonded connection between the explosive charge (6) and the second coating (10) once the constituents of the explosive charge (6) have polymerized is no longer possible.
- Method according to Claim 1, characterized in that, in a warhead casing (2) consisting of steel, an anticorrosive paint with an additive that reduces the adhesiveness of the anticorrosive paint is used as the first coating (9).
- Method according to Claim 1 or 2, characterized in that the first coating (9) is applied by spray-lacquering.
- Method according to one of Claims 1 to 3, characterized in that the second coating (10) is lacquered or "swirled" on.
- Method according to one of Claims 1 to 4, characterized in that the coatings (9, 10) are applied through the orifice (5).
- Warhead with a warhead casing (2) that encloses an explosive charge (6) consisting of a plastic-bonded explosive material, wherein a compensation layer (8) consisting of an elastic material is arranged between the explosive charge (6) and the inner wall (7) of the warhead casing (2), wherein a double inner coating (9, 10) is provided as a compensation layer (8), characterized in that the compensation layer (8) comprises a first coating (9), which has weak adhesiveness and which is adjacent to the inner wall (7) of the warhead casing (2) and is configured as a bonding layer, and an elastic second coating (10), which is adjacent to the first coating (9), wherein the second coating (10) consists of a material that matches the plastic binder of the explosive charge (6) and a separation of the bonded connection between the explosive charge (6) and the second coating (10) is no longer possible.
- Warhead according to Claim 6, characterized in that, in a warhead casing (2) consisting of steel, the first coating (9) consists of an anticorrosive material with at least one additive that reduces the adhesiveness of the anticorrosive material.
- Warhead according to Claim 7, characterized in that the additive that reduces adhesiveness is ETFE / PFA / FEP or similar anti-adhesive properties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15707987T PL3114426T3 (en) | 2014-03-07 | 2015-03-06 | Method for producing a large-caliber warhead, and warhead produced according to said method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201410103105 DE102014103105B3 (en) | 2014-03-07 | 2014-03-07 | Method and production of a large caliber warhead and warhead produced by this method |
| PCT/EP2015/054713 WO2015132381A1 (en) | 2014-03-07 | 2015-03-06 | Method for producing a large-caliber warhead, and warhead produced according to said method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3114426A1 EP3114426A1 (en) | 2017-01-11 |
| EP3114426B1 true EP3114426B1 (en) | 2018-05-02 |
Family
ID=51899703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15707987.2A Active EP3114426B1 (en) | 2014-03-07 | 2015-03-06 | Method for producing a large-caliber warhead, and warhead produced according to said method |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP3114426B1 (en) |
| DE (1) | DE102014103105B3 (en) |
| DK (1) | DK3114426T3 (en) |
| ES (1) | ES2678368T3 (en) |
| LT (1) | LT3114426T (en) |
| PL (1) | PL3114426T3 (en) |
| WO (1) | WO2015132381A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210055089A1 (en) * | 2018-03-05 | 2021-02-25 | Bae Systems Plc | Pre-defined recess |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013021030A1 (en) | 2013-12-17 | 2015-06-18 | Rheinmetall Waffe Munition Gmbh | Warhead and explosive charge module for such a warhead |
| DE102015005980A1 (en) | 2015-05-08 | 2016-11-10 | Diehl Bgt Defence Gmbh & Co. Kg | Explosive charge with vogegebenem volume and given outer shape and bullet |
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 (en) * | 2002-02-21 | 2003-09-11 | Rheinmetall W & M Gmbh | Process for producing a large-caliber explosive projectile and an explosive projectile produced by this process |
| DE102005050973A1 (en) * | 2005-10-25 | 2007-04-26 | Rheinmetall Waffe Munition Gmbh | explosive projectile |
| DE102006034891A1 (en) * | 2006-07-25 | 2008-02-07 | Rheinmetall Waffe Munition Gmbh | liner |
| DE102009022495A1 (en) * | 2009-05-25 | 2010-12-02 | Rheinmetall Waffe Munition Gmbh | Method for producing a large-caliber explosive projectile and explosive projectile, produced by this method |
| DE102012000011A1 (en) * | 2012-01-02 | 2013-07-04 | Rheinmetall Waffe Munition Gmbh | Spin-stabilized explosive projectile |
-
2014
- 2014-03-07 DE DE201410103105 patent/DE102014103105B3/en not_active Expired - Fee Related
-
2015
- 2015-03-06 PL PL15707987T patent/PL3114426T3/en unknown
- 2015-03-06 DK DK15707987.2T patent/DK3114426T3/en active
- 2015-03-06 ES ES15707987.2T patent/ES2678368T3/en active Active
- 2015-03-06 WO PCT/EP2015/054713 patent/WO2015132381A1/en active Application Filing
- 2015-03-06 EP EP15707987.2A patent/EP3114426B1/en active Active
- 2015-03-06 LT LTEP15707987.2T patent/LT3114426T/en unknown
Non-Patent Citations (1)
| Title |
|---|
| None * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210055089A1 (en) * | 2018-03-05 | 2021-02-25 | Bae Systems Plc | Pre-defined recess |
| US11766809B2 (en) * | 2018-03-05 | 2023-09-26 | Bae Systems Plc | Method of forming pre-defined recess in cured or cast explosive composition |
Also Published As
| Publication number | Publication date |
|---|---|
| DK3114426T3 (en) | 2018-07-16 |
| PL3114426T3 (en) | 2018-10-31 |
| DE102014103105B3 (en) | 2014-12-04 |
| LT3114426T (en) | 2018-07-10 |
| EP3114426A1 (en) | 2017-01-11 |
| WO2015132381A1 (en) | 2015-09-11 |
| ES2678368T3 (en) | 2018-08-10 |
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