EP2044385A1 - Liner - Google Patents

Liner

Info

Publication number
EP2044385A1
EP2044385A1 EP07765104A EP07765104A EP2044385A1 EP 2044385 A1 EP2044385 A1 EP 2044385A1 EP 07765104 A EP07765104 A EP 07765104A EP 07765104 A EP07765104 A EP 07765104A EP 2044385 A1 EP2044385 A1 EP 2044385A1
Authority
EP
European Patent Office
Prior art keywords
liner
explosive charge
bead
projectile
explosive
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
Application number
EP07765104A
Other languages
German (de)
French (fr)
Other versions
EP2044385B1 (en
Inventor
Michael Schwenzer
Ole Dau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinmetall Waffe Munition GmbH
Original Assignee
Rheinmetall Waffe Munition GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rheinmetall Waffe Munition GmbH filed Critical Rheinmetall Waffe Munition GmbH
Publication of EP2044385A1 publication Critical patent/EP2044385A1/en
Application granted granted Critical
Publication of EP2044385B1 publication Critical patent/EP2044385B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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

Definitions

  • IHE insensitive explosive
  • a process for producing a large-caliber explosive projectile and explosive projectile prepared by this process is disclosed in EP 1 338 860 B1.
  • a liner made of a plastic sheath made of an elastic material is proposed, so that the temperature fluctuations fluctuating volume of the explosive charge is absorbed by the elastic plastic sheath.
  • the introduction of the liner is made through a mouth hole, which normally serves to receive the head fuse, in a folded or compressed form. In the unfolded state, this bag-shaped plastic casing corresponds to the dimensions of the interior of the explosive projectile.
  • the liner is not so stiff as to be able to compensate its own thermal expansions according to the extent of the explosive charge. Due to the large thermal expansion, the explosive charge pulls you together when cooling / warming by several mm or expands. The liner contracts with the explosive charge, but does not expand to the same extent. This results in a shift of the liner on the explosive charge. The liner slides over many temperature changes relative to the charge backwards, so that the explosive charge can be partially exposed.
  • the invention has the object to prevent the displacement of a liner on the explosive charge.
  • DE 1 812 462 A1 discloses a projectile with a fragmentation jacket, in which there is an explosive charge surrounded by a foil, and this foil, which may consist of steel, copper or plastic, has a number of elongate, extending in the longitudinal direction of the projectile, in FIG Row arranged indentations, but these serve to form small shaped charges, which are directed against a cylindrical fragment jacket, which surrounds the film with the explosive charge.
  • notches are cut into the fragment shell by the small shaped charges and the shell is split into splinters along these notches.
  • the size of the splitter corresponds to the distances between the indentations of a row and the distances between the rows. A use for fixing the film against the explosive charge is not considered.
  • the bead can be performed circumferentially. If the liner is introduced into the projectile casing in a folded form, a segmentation of the circumferential bead offers itself. The resulting cams also have a very high stiffness, the spaces allow easy folding of the liner.
  • cams or beads may be incorporated into the liner during its manufacture by a simple modification of the liner tool.
  • 1 is a partial view of a projectile with a bead having a liner
  • FIG. 1 a slightly enlarged view of the bead from FIG. 1
  • FIG. Fig. 2 is a partial view of the projectile with a least two beads having liner.
  • Fig. 1 shows in a section of a projectile 1, comprising a projectile casing 2, a liner 3, which is located between the projectile casing and an explosive charge 4.
  • the liner 3 is designed at a location L1 defined for the explosive surface with an inwardly formed bead / cam 5 (FIG. 1a).
  • the bead 5 is designed so stiff that the liner 3 is depending on the filling level of the explosive charge 4 immediately or after a few temperature cycles form-fitting manner at the front edge of the explosive charge 4.
  • Fig. 2 shows the projectile 1 with more than one molded bead or cam 5 (Fig. 2a).
  • the further bead 6 is in this case introduced into the liner 3 at a length L2 defined for the surface of the explosive and allows the liner 3 to already interlock positively with the explosive charge 4 during casting and thus be fixed from the beginning.
  • the insensitive explosive charge 4 is poured into the artillery explosive projectile 1.
  • the liner 3 in the form of an elastic rubber-like plastic casing, is used.
  • the insertion into the projectile casing 2 is carried out through a mouth hole 7.
  • the insensitive explosive 4 consists of explosives and a plastic binder system with other additives. This is poured into the liner 3 and cures in it.
  • the hardened, shaped explosive thus forms the plastic-bound explosive charge 4.
  • the explosive charge 4 has compared to the projectile casing 2 made of steel by a factor of 8 to 12 larger temperature expansion coefficient.

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)
  • Compositions Of Macromolecular Compounds (AREA)
  • Toys (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Chutes (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

In order to prevent slipping of the liner (3) on an explosive charge (4) in a missile (1), the invention provides that at least one flaring or cam (5, 6) is fixed in the liner (3) which, when deformed inwards, can hook itself on the explosive charge (4).

Description

BESCHREIBUNG DESCRIPTION
Linerliner
Bei der insensitiven Artilleriemunition besteht zwischen dem insensitiven Sprengstoff (IHE) und der Geschosswand kein direkter Kontakt, um das Entstehen von thermischen Spannungen bedingt durch die unterschiedlichen Wärmeausdehnungen von IHE und Geschosshülle zu unterbinden. Daher wird zwischen beiden ein Liner, in der Regel ein Plastiksack, in die Geschosshülle eingebracht. Anschließend wird der IHE eingegossen und ausgehärtet.In the insensitive artillery ammunition there is no direct contact between the insensitive explosive (IHE) and the projectile wall in order to prevent the development of thermal stresses due to the different thermal expansions of IHE and projectile casing. Therefore, a liner, usually a plastic bag, is inserted into the projectile casing between the two. Subsequently, the IHE is poured in and cured.
Ein Verfahren zur Herstellung eines großkalibrigen Sprenggeschosses und Sprenggeschoss, hergestellt nach diesem Verfahren wird mit der EP 1 338 860 B1 offenbart. Hier wird ein Liner aus einer Kunststoffhülle aus einem elastischen Material vorgeschlagen, damit das sich bei Temperaturschwankungen ändernde Volumen der Sprengladung durch die elastische Kunststoffhülle aufgenommen wird. Das Einbringen des Liners erfolgt durch ein Mundloch, welches normalerweise zur Aufnahme des Kopfzünders dient, in zusammengefalteter oder zusammengepresster Form. Im entfalteten Zustand entspricht diese sackförmig ausgebildete Kunststoffhülle den Abmessungen des Innenraumes des Sprenggeschosses.A process for producing a large-caliber explosive projectile and explosive projectile prepared by this process is disclosed in EP 1 338 860 B1. Here, a liner made of a plastic sheath made of an elastic material is proposed, so that the temperature fluctuations fluctuating volume of the explosive charge is absorbed by the elastic plastic sheath. The introduction of the liner is made through a mouth hole, which normally serves to receive the head fuse, in a folded or compressed form. In the unfolded state, this bag-shaped plastic casing corresponds to the dimensions of the interior of the explosive projectile.
In einigen Fällen ist der Liner nicht so steif, die eigenen auftretenden Wärmeausdehnungen entsprechend der Ausdehnung der Sprengladung kompensieren zu können. Aufgrund der großen Wärmeausdehnung zieht dich die Sprengladung bei Abkühlung / Erwärmung um mehrere mm zusammen bzw. dehnt sich aus. Der Liner zieht sich mit der Sprengladung zusammen, dehnt sich aber nicht im gleichen Maß mit aus. Hierdurch kommt es zu einer Verschiebung des Liners auf der Sprengladung. Der Liner schiebt sich über viele Temperaturwechsel relativ zur Ladung nach hinten, so dass die Sprengladung teilweise freiliegen kann.In some cases, the liner is not so stiff as to be able to compensate its own thermal expansions according to the extent of the explosive charge. Due to the large thermal expansion, the explosive charge pulls you together when cooling / warming by several mm or expands. The liner contracts with the explosive charge, but does not expand to the same extent. This results in a shift of the liner on the explosive charge. The liner slides over many temperature changes relative to the charge backwards, so that the explosive charge can be partially exposed.
Hier stellt sich die Erfindung die Aufgabe, das sich Verschieben eines Liners auf der Sprengladung zu verhindern.Here, the invention has the object to prevent the displacement of a liner on the explosive charge.
Gelöst wird die Aufgabe durch die Merkmale des Patentanspruchs 1. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen aufgeführt. Der Erfindung liegt die Idee zugrunde, eine Art Wulst oder Nocken in den Liner einzubinden bzw. einzuarbeiten, die einen Formschluss zur Ladungsvorderkante oder in der Ladung realisieren.The problem is solved by the features of claim 1. Advantageous embodiments are listed in the subclaims. The invention is based on the idea to incorporate or incorporate a kind of bead or cams in the liner, which realize a positive connection to the front cargo edge or in the charge.
Zwar ist aus der DE 1 812 462 A1 ein Geschoss mit Splittermantel bekannt, worin sich eine von einer Folie umgebene Sprengladung befindet und diese Folie, die aus Stahl, Kupfer oder Kunststoff bestehen kann, eine Anzahl längliche, sich in Längsrichtung des Geschosses erstreckende, in Reihe angeordnete Einbuchtungen aufweist, doch dienen diese zur Bildung kleiner Hohlladungen, die gegen einen zylindrischen Splittermantel gerichtet sind, welcher die Folie mit der Sprengladung umgibt. Bei der Detonation des Sprengstoffkörpers werden durch die kleinen Hohlladungen Kerben in den Splittermantel geschnitten und der Mantel entlang dieser Kerben in Splitter zerlegt. Die Größe der Splitter entspricht den Abständen zwischen den Einbuchtungen einer Reihe und den Abständen zwischen den Reihen. Eine Nutzung zur Fixierung der Folie gegenüber der Sprengladung ist nicht angedacht.Although DE 1 812 462 A1 discloses a projectile with a fragmentation jacket, in which there is an explosive charge surrounded by a foil, and this foil, which may consist of steel, copper or plastic, has a number of elongate, extending in the longitudinal direction of the projectile, in FIG Row arranged indentations, but these serve to form small shaped charges, which are directed against a cylindrical fragment jacket, which surrounds the film with the explosive charge. During the detonation of the explosive body, notches are cut into the fragment shell by the small shaped charges and the shell is split into splinters along these notches. The size of the splitter corresponds to the distances between the indentations of a row and the distances between the rows. A use for fixing the film against the explosive charge is not considered.
Der Wulst kann dabei umlaufend ausgeführt sein. Wird der Liner in einer gefalteten Form in die Geschosshülle eingebracht, bietet sich eine Segmentierung der umlaufenden Wulst an. Die dabei entstehenden Nocken weisen gleichfalls eine sehr hohe Formsteifigkeit auf, die Zwischenräume ermöglichen ein einfaches Falten des Liners.The bead can be performed circumferentially. If the liner is introduced into the projectile casing in a folded form, a segmentation of the circumferential bead offers itself. The resulting cams also have a very high stiffness, the spaces allow easy folding of the liner.
Um die Formsteifigkeit der Nocken zu erhöhen empfiehlt es sich, die Steifigkeit der Nocken gezielt beispielsweise dadurch einzustellen, dass die Wandstärke / Materialdicke im Bereich der Nocken verstärkt wird. Eine Variation ist auch mittels der Breite und der Tiefe der Wulst möglich.In order to increase the stiffness of the cams, it is advisable to adjust the stiffness of the cams, for example, by increasing the wall thickness / material thickness in the region of the cams. A variation is also possible by means of the width and the depth of the bead.
Als vorteilhaft hat sich auch erwiesen, mehrere Reihen von Wülste oder Nocken in den Liner einzubringen.It has also proven advantageous to introduce several rows of beads or cams in the liner.
Die Nocken oder Wülste können durch eine einfache Modifikation des Linerwerkzeuges in den Liner bei seiner Herstellung eingearbeitet werden.The cams or beads may be incorporated into the liner during its manufacture by a simple modification of the liner tool.
Anhand eines Ausführungsbeispiels mit Zeichnung soll die Erfindung näher erläutert werden. Es zeigt:Reference to an embodiment with drawing, the invention will be explained in more detail. It shows:
Fig. 1 eine Teilansicht eines Geschosse mit einem eine Wulst aufweisenden Liners,1 is a partial view of a projectile with a bead having a liner,
Fig. a eine leicht vergrößerte Darstellung der Wulst aus Fig. 1 , Fig. 2 eine Teilansicht des Geschosses mit einem wenigstens zwei Wülste aufweisenden Liners.FIG. 1 a slightly enlarged view of the bead from FIG. 1, FIG. Fig. 2 is a partial view of the projectile with a least two beads having liner.
Fig. 1 zeigt in einem Ausschnitt ein Geschoss 1 , aufweisend eine Geschosshülle 2, einen Liner 3, der sich zwischen der Geschosshülle und eine Sprengladung 4 befindet. Um ein Rutschen des Liners 3 auf der Sprengladung 4 zu verhindern, ist der Liner 3 an einer zur Sprengstoffoberfläche definierten Stelle L1 mit einer nach innen geformten Wulst / Nocken 5 ausgeführt (Fig. 1a). Die Wulst 5 ist so steif ausgeführt, dass der Liner 3 je nach Füllhöhe der Sprengladung 4 sofort oder nach wenigen Temperaturzyklen formschlüssig an der Vorderkante der Sprengladung 4 liegt.Fig. 1 shows in a section of a projectile 1, comprising a projectile casing 2, a liner 3, which is located between the projectile casing and an explosive charge 4. In order to prevent slippage of the liner 3 on the explosive charge 4, the liner 3 is designed at a location L1 defined for the explosive surface with an inwardly formed bead / cam 5 (FIG. 1a). The bead 5 is designed so stiff that the liner 3 is depending on the filling level of the explosive charge 4 immediately or after a few temperature cycles form-fitting manner at the front edge of the explosive charge 4.
Fig. 2 zeigt das Geschoss 1 mit mehr als einer eingeformten Wulst bzw. Nocken 5 (Fig. 2a). Die weitere Wulst 6 ist hierbei bei einer zur Sprengstoffoberfläche definierten Länge L2 in den Liner 3 eingebracht und ermöglicht, dass der Liner 3 sich bereits formschlüssig beim Gießen mit der Sprengladung 4 verhaken kann und somit von Anfang an fixiert wird.Fig. 2 shows the projectile 1 with more than one molded bead or cam 5 (Fig. 2a). The further bead 6 is in this case introduced into the liner 3 at a length L2 defined for the surface of the explosive and allows the liner 3 to already interlock positively with the explosive charge 4 during casting and thus be fixed from the beginning.
Prinzipiell ist hier davon auszugehen, dass auch hier, wie bekannt, die insensitive Sprengladung 4 in das Artillerie- Sprenggeschossen 1 eingegossen wird. Um ein Anhaften der Sprengladung 4 an der Innenwand der Geschosshülle 2 zu vermeiden, wird der Liner 3, in Form einer elastischen gummiartigen Kunststoffhülle, eingesetzt. Das Einsetzen in die Geschosshülle 2 erfolgt durch ein Mundloch 7. Der insensitive Sprengstoff 4 besteht aus Sprengstoff und einem Kunststoffbindersystem mit weiteren Zusätzen. Dieser wird in den Liner 3 hineingegossen und härtet darin aus. Der ausgehärtete, geformte Sprengstoff bildet somit die kunststoffgebundene Sprengladung 4. Die Sprengladung 4 weist gegenüber der Geschosshülle 2 aus Stahl einen um Faktor 8 bis 12 größeren Temperaturausdehnungskoeffizienten auf. In principle, it can be assumed here that, as is known, the insensitive explosive charge 4 is poured into the artillery explosive projectile 1. In order to avoid adhesion of the explosive charge 4 to the inner wall of the projectile casing 2, the liner 3, in the form of an elastic rubber-like plastic casing, is used. The insertion into the projectile casing 2 is carried out through a mouth hole 7. The insensitive explosive 4 consists of explosives and a plastic binder system with other additives. This is poured into the liner 3 and cures in it. The hardened, shaped explosive thus forms the plastic-bound explosive charge 4. The explosive charge 4 has compared to the projectile casing 2 made of steel by a factor of 8 to 12 larger temperature expansion coefficient.

Claims

Patentansprüche claims
1. Liner (3), angeordnet zwischen einer Geschosshülle (2) eines Geschosses (1) sowie einer Sprengladung (4) zur Vermeidung eines Kontaktes zwischen der Sprengladung (4) und der Geschosshülle, bestehend aus einem Kunststoff, dadurch gekennzeichnet, dass wenigstens eine Wulst oder Nocken (5, 6) im Liner (3) eingebunden ist, welche nach innen geformt sich an der Sprengladung (4) verhaken kann.1. Liner (3) arranged between a projectile casing (2) of a projectile (1) and an explosive charge (4) to avoid contact between the explosive charge (4) and the projectile casing, consisting of a plastic, characterized in that at least one Bead or cam (5, 6) in the liner (3) is integrated, which inwardly molded to the explosive charge (4) can get caught.
2. Liner nach Anspruch 1 , dadurch gekennzeichnet, dass eine erste Wulst / Nocken (5) im Liner (3) in einer definierten Stelle (L1) vom Mundloch (7) angeordnet sein kann, so dass sofort oder nach einigen Temperaturzyklen diese sich an der Vorderkante der Sprengladung (4) verhaken bzw. anlegen kann.2. Liner according to claim 1, characterized in that a first bead / cam (5) in the liner (3) in a defined position (L1) from the mouth hole (7) may be arranged so that immediately or after a few temperature cycles, this is the front edge of the explosive charge (4) can catch or create.
3. Liner nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die weitere Wulst (6) im Liner (3) in einer weiteren definierten Stelle (12) vom Mundloch (7) angeordnet sein kann, so dass sich der Liner (3) formschlüssig beim Gießen mit der Sprengladung (4) verhaken kann.3. Liner according to claim 1 or 2, characterized in that the further bead (6) in the liner (3) in a further defined point (12) from the mouth hole (7) may be arranged so that the liner (3) form fit when casting with the explosive charge (4) can get caught.
4. Liner nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass im Bereich der Nocken / des wenigstens einen Wulstes (5, 6) die Materialstärke (t) verstärkt ist. 4. Liner according to one of claims 1 to 3, characterized in that in the region of the cams / of the at least one bead (5, 6), the material thickness (t) is reinforced.
EP07765104.0A 2006-07-25 2007-07-06 Liner Not-in-force EP2044385B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006034891A DE102006034891A1 (en) 2006-07-25 2006-07-25 liner
PCT/EP2007/005988 WO2008011969A1 (en) 2006-07-25 2007-07-06 Liner

Publications (2)

Publication Number Publication Date
EP2044385A1 true EP2044385A1 (en) 2009-04-08
EP2044385B1 EP2044385B1 (en) 2015-09-02

Family

ID=38562292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07765104.0A Not-in-force EP2044385B1 (en) 2006-07-25 2007-07-06 Liner

Country Status (8)

Country Link
US (1) US8408138B2 (en)
EP (1) EP2044385B1 (en)
JP (1) JP5437803B2 (en)
CA (1) CA2658647C (en)
DE (1) DE102006034891A1 (en)
IL (1) IL196619A (en)
NO (1) NO20085017L (en)
WO (1) WO2008011969A1 (en)

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Publication number Priority date Publication date Assignee Title
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
DE102014103105B3 (en) * 2014-03-07 2014-12-04 Rheinmetall Waffe Munition Gmbh Method and production of a large caliber warhead and warhead produced by this method

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US3943208A (en) * 1971-06-02 1976-03-09 Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defense Method for binding solid propellant to rocket motor case
JPS51110012A (en) * 1975-03-24 1976-09-29 Du Pont Bakuhayakuho oyobi raikantsukibakuhayakuho
NO138610C (en) * 1976-08-24 1978-10-04 Raufoss Ammunisjonsfabrikker PROJECTIL FOR DISTRIBUTION OF PRODUCED LOAD AND PROCEDURE IN MANUFACTURING THE PROJECTILE
DE2835557C2 (en) * 1978-08-14 1985-11-14 Rheinmetall GmbH, 4000 Düsseldorf Warhead for projectiles and missiles
US4337218A (en) * 1980-10-15 1982-06-29 The United States Of America As Represented By The Secretary Of The Army Method of case bonding propellant
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US4649823A (en) * 1985-07-31 1987-03-17 Morton Thiokol, Inc. Mechanical bond between a solid rocket propellant composition and a substrate and a method of effecting such a bond
FR2741437B1 (en) * 1995-11-16 1997-12-19 Poudres & Explosifs Ste Nale METHOD OF MANUFACTURING EXPLOSIVE ELEMENT WITH CONTROLLED FRAGMENTATION
US5939662A (en) * 1997-12-03 1999-08-17 Raytheon Company Missile warhead design
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
GB0205565D0 (en) * 2002-03-11 2002-04-24 Bae Systems Plc Explosives liner
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Also Published As

Publication number Publication date
US20100005996A1 (en) 2010-01-14
JP2009544926A (en) 2009-12-17
DE102006034891A1 (en) 2008-02-07
JP5437803B2 (en) 2014-03-12
NO20085017L (en) 2009-02-18
WO2008011969A1 (en) 2008-01-31
CA2658647A1 (en) 2008-01-31
US8408138B2 (en) 2013-04-02
EP2044385B1 (en) 2015-09-02
CA2658647C (en) 2014-09-09
IL196619A0 (en) 2009-11-18
IL196619A (en) 2015-06-30

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