EP2187164A2 - Igniter - Google Patents

Igniter Download PDF

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Publication number
EP2187164A2
EP2187164A2 EP09013134A EP09013134A EP2187164A2 EP 2187164 A2 EP2187164 A2 EP 2187164A2 EP 09013134 A EP09013134 A EP 09013134A EP 09013134 A EP09013134 A EP 09013134A EP 2187164 A2 EP2187164 A2 EP 2187164A2
Authority
EP
European Patent Office
Prior art keywords
projectile
damping
igniter
ignition
damping element
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.)
Withdrawn
Application number
EP09013134A
Other languages
German (de)
French (fr)
Other versions
EP2187164A3 (en
Inventor
Wolfgang Dr. Hoffmann
Wolfgang Scherge
Mathias Dr. Lengnick
Holger Brase
Stefan Keil
Torsten Niemeyer
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 EP2187164A2 publication Critical patent/EP2187164A2/en
Publication of EP2187164A3 publication Critical patent/EP2187164A3/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/02—Fuze bodies; Fuze housings
    • 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

Definitions

  • the invention relates to a so-called detonator damping in projectiles or projectiles, in particular with built-in ignition delay.
  • the igniter components are hardened and / or potted so as to reduce the introduction of vibrations to the ignition system.
  • such measures are not sufficient for extreme target structures, the reliability of the ignition system can not always be guaranteed, since they are not sufficient to compensate for the vibrations occurring during penetration (eg on building targets) in or on the detonator.
  • the invention has the task of integrating a device in the projectile or projectile, which minimizes the introduction of vibrations in the ignition and still guarantees the reliability of the igniter itself.
  • the invention is based on the idea of integrating a damping system or a damping device, consisting of damping and decoupling elements, in the projectile so as to derive vibrations from the ignition device.
  • the DE 60 2004 001 496 T2 relates to an anti-bunker ammunition in which a sub-munition and the device for ejecting the submunition of at least one of the walls of the inner cavity are insulated by a damping material.
  • the own solution provides for damping or mechanical decoupling of the ignition device firmly integrated in the projectile so that tips are broken down on impact and can no longer have a destructive effect on the mechanical and electronic components.
  • the additionally integrated damping device thus reduces the effects of the projectile vibrations by additional materials of low density and high damping properties against sound and shock waves.
  • the damping device decouples the ignition of the most metallic space in the projectile.
  • the vibrations are preferably degraded by a plastic, which is favored as a damping and decoupling material.
  • a plastic which is favored as a damping and decoupling material.
  • the determination of the materials is preferably carried out with the assistance of computer simulations (eg ABACUS EXPLICIT, the company Simulia).
  • computer simulations eg ABACUS EXPLICIT, the company Simulia.
  • ABACUS EXPLICIT the company Simulia
  • different penetration processes of a projectile when penetrating steel / armor plates, brick / concrete walls and sand bunkers etc. are simulated, determining the load spectrum for the projectile / system and then designing the material and the geometry of the igniter damping.
  • empirical values can also be used.
  • discs are inserted in front of and behind the igniter or the ignition device and these with the ignition system with the appropriate torque screwed.
  • a material is selected which, under the set (defined) torque, gives the optimum damping for the ignition system at all targets.
  • the thickness of the disks is adapted to the load spectra (for example, by simulation), which enables optimization of the damping system, especially for specific targets.
  • the damping system mainly consists of a few discs, preferably plastic, the solution is also very inexpensive. Existing ignition systems can be modified without much effort.
  • FIG. 1 shows the only figure a projectile 1 with a rear part 1a, in which an ignition system consisting of an igniter 2 and a booster 3 (if structurally provided) is located.
  • the ignition system is held in the projectile 1 by, for example, a threaded ring 4 or a similar fastening element.
  • the threaded ring 4 is preferably provided with a defined torque dressed. This ensures that the damping surfaces of the damping material 7 completely abut the ignition system and no gaps are created. At the same time it serves to fix the ignition system and its attachment in the projectile. 1
  • the arrow indicates the shooting direction.
  • the resulting vibrations are absorbed by the / the damping elements 7.
  • the ignition of the projectile 7 itself takes place with delayed ignition only after penetration of the projectile 1 by the target, wherein the remaining forces are sufficient to initiate the detonator.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Vibration Dampers (AREA)

Abstract

The projectile (1) has a damping element (7) fit between an igniter base (5) and the projectile and/or between an igniter shoulder (6) and a threaded ring (4). The damping element is disk, circular or pot shaped, and is a material with lower acoustic impedance than a material of the projectile. The damping material is a plastic such as polyethylene, and the threaded ring is activated by a defined torque. Damping surfaces of the damping element is completely fitted to an igniter system.

Description

Die Erfindung betrifft eine sogenannte Zünder- Dämpfung in Geschossen bzw. Projektilen, insbesondere mit eingebauter Zündverzögerung.The invention relates to a so-called detonator damping in projectiles or projectiles, in particular with built-in ignition delay.

Bei Projektilen mit einer Zündeinrichtung, deren Zünder bei, während oder nach der Penetration von Zielen noch funktionsfähig sein soll, besteht das Problem, dass die durch den Aufprallstoß initiierten Schwingungen des Projektils die empfindlichen Bauteile der Zündeinrichtung negativ beeinflusst oder sogar zerstört werden können. Die auf die Zündeinrichtung übertragenen Schwingungen werden einerseits durch die schlagartige Verzögerung des Projektils und andererseits durch in das Geschoss eingeleitete Stoß- bzw. Schallwellen verursacht.For projectiles with an ignition device whose detonator is to be functional during, during or after the penetration of targets, there is the problem that the vibrations of the projectile initiated by the impact impact can negatively influence or even destroy the sensitive components of the ignition device. The vibrations transmitted to the ignition device are caused on the one hand by the abrupt deceleration of the projectile and on the other hand by shock waves or sound waves introduced into the projectile.

In der bisherigen Praxis werden daher die Zünderkomponenten gehärtet und / oder vergossen, um so die Einleitung von Schwingungen auf das Zündsystem zu verringern. Derartige Maßnahmen reichen jedoch bei extremen Zielaufbauten nicht aus, die Funktionssicherheit des Zündsystems kann nicht immer garantiert werden, da sie nicht ausreichend sind, um die bei der Penetration auftretenden Schwingungen (z. B. an Gebäudezielen) im oder am Zünder zu kompensieren.In previous practice, therefore, the igniter components are hardened and / or potted so as to reduce the introduction of vibrations to the ignition system. However, such measures are not sufficient for extreme target structures, the reliability of the ignition system can not always be guaranteed, since they are not sufficient to compensate for the vibrations occurring during penetration (eg on building targets) in or on the detonator.

Hier stellt sich die Erfindung die Aufgabe, eine Einrichtung in das Geschoss oder Projektil einzubinden, die das Einleiten von Schwingungen in die Zündeinrichtung minimiert und die Funktionssicherheit des Zünders selbst trotzdem garantiert.Here, the invention has the task of integrating a device in the projectile or projectile, which minimizes the introduction of vibrations in the ignition and still guarantees the reliability of the igniter itself.

Gelöst wird die Aufgabe durch die Merkmale des Patentanspruchs 1. Unteransprüche zeigen die bevorzugten Ausführungen.The object is achieved by the features of claim 1. Subclaims show the preferred embodiments.

Der Erfindung liegt die Idee zugrunde, ein Dämpfungssystem bzw. eine Dämpfungseinrichtung, bestehend aus Dämpfungs- und Entkopplungselementen, in das Geschoss einzubinden, um so Schwingungen von der Zündeinrichtung abzuleiten.The invention is based on the idea of integrating a damping system or a damping device, consisting of damping and decoupling elements, in the projectile so as to derive vibrations from the ignition device.

Dämpfungseinrichtungen als solches in Geschossen sind bekannt.Damping devices as such in projectiles are known.

So beschreibt die DE 698 14 022 T2 ( EP 0 928 948 B1 ) ein Geschoss mit Mehrfachladungen und mit einem Dämpfungsabschnitt, der, wenn das Geschoss der Startbeschleunigung ausgesetzt ist, in Längsrichtung zusammengepresst wird. Eine Lücke zwischen dem Dämpfungsabschnitt und einer starren Trägervorrichtung verschwindet, wodurch die Trägervorrichtung mit den Kontaktflächen in direkten Kontakt kommt.That's how it describes DE 698 14 022 T2 ( EP 0 928 948 B1 ) a multi-charge projectile and having a damping portion that is longitudinally compressed when the projectile is subjected to the starting acceleration. A gap between the damping portion and a rigid support device disappears, whereby the support device comes into direct contact with the contact surfaces.

Die DE 60 2004 001 496 T2 betrifft eine Anti- Bunker Munition, bei welcher eine Untermunition und die Vorrichtung zum Auswurf der Untermunition von wenigstens einer der Wände des inneren Hohlraums durch ein Dämpfungsmaterial isoliert sind.The DE 60 2004 001 496 T2 relates to an anti-bunker ammunition in which a sub-munition and the device for ejecting the submunition of at least one of the walls of the inner cavity are insulated by a damping material.

Die eigene Lösung hingegen sieht eine Dämpfung bzw. mechanische Entkopplung der im Geschoss fest eingebundenen Zündeinrichtung vor, sodass Spitzen beim Aufprall abgebaut werden und sich nicht mehr zerstörend auf die mechanischen als auch elektronischen Bauteile auswirken können. Die zusätzlich eingebundene Dämpfungseinrichtung vermindert also die Auswirkungen der Geschossschwingungen durch zusätzliche Materialien geringer Dichte und hoher Dämpfungseigenschaften gegenüber Schall- und Stoßwellen. Die Dämpfungseinrichtung entkoppelt dabei die Zündeinrichtung vom meist metallischen Bauraum im Geschoss.The own solution, on the other hand, provides for damping or mechanical decoupling of the ignition device firmly integrated in the projectile so that tips are broken down on impact and can no longer have a destructive effect on the mechanical and electronic components. The additionally integrated damping device thus reduces the effects of the projectile vibrations by additional materials of low density and high damping properties against sound and shock waves. The damping device decouples the ignition of the most metallic space in the projectile.

Die Schwingungen werden bevorzugt durch einen Kunststoff abgebaut, der als Dämpfungs- und Entkopplungsmaterial favorisiert wird. Damit verringert sich die Belastung auf alle Komponenten des Zünders bzw. der Zündeinrichtung und der Zündkette, sodass die Funktion auch an extremen Zielen gewährleistet wird. Nunmehr wird auch die Zünderfunktion - verzögerte Zündung nach Durchdringung des Zieles = Delay- Funktion - möglich, die Funktionssicherheit dieser Funktion garantiert.The vibrations are preferably degraded by a plastic, which is favored as a damping and decoupling material. Thus, the load on all components of the igniter or the ignition device and the ignition chain is reduced, so that the function is guaranteed even at extreme targets. Now also the detonator function - delayed ignition after penetration of the target = delay function - possible, guarantees the functional reliability of this function.

Die Bestimmung der Materialien erfolgt bevorzugt mit Unterstützung von Computersimulationen(z. B. ABACUS EXPLICIT, der Fa. Simulia). Im Simulationsrechner werden unterschiedliche Penetrationsvorgänge eines Geschosses beim Durchdringen von Stahl-/ Panzerplatten, Ziegel- / Betonmauern sowie Sandbunkern etc. simuliert und dabei das Belastungsspektrum für das Geschoss / System ermittelt und danach das Material und die Geometrie der Zünderdämpfung ausgelegt. Alternativ können aber auch Erfahrungswerte herangezogen werden.The determination of the materials is preferably carried out with the assistance of computer simulations (eg ABACUS EXPLICIT, the company Simulia). In the simulation computer different penetration processes of a projectile when penetrating steel / armor plates, brick / concrete walls and sand bunkers etc. are simulated, determining the load spectrum for the projectile / system and then designing the material and the geometry of the igniter damping. Alternatively, empirical values can also be used.

In einer bevorzugten Ausführung werden vor und hinter dem Zünder bzw. der Zündeinrichtung Scheiben eingelegt und diese mit dem Zündsystem mit entsprechendem Drehmoment verschraubt. Für die Scheiben wird ein Material ausgewählt, dass unter dem eingestellten (definierten) Drehmoment die optimale Dämpfung für das Zündsystem bei allen Zielen ergibt.In a preferred embodiment, discs are inserted in front of and behind the igniter or the ignition device and these with the ignition system with the appropriate torque screwed. For the discs, a material is selected which, under the set (defined) torque, gives the optimum damping for the ignition system at all targets.

Die Dicke der Scheiben ist dabei den Belastungsspektren (beispielsweise durch Simulation) angepasst, was eine Optimierung des Dämpfungssystems insbesondere für spezielle Ziele ermöglicht.The thickness of the disks is adapted to the load spectra (for example, by simulation), which enables optimization of the damping system, especially for specific targets.

Da das Dämpfungssystem hauptsächlich aus wenigen Scheiben, vorzugsweise Kunststoff, besteht, ist die Lösung zudem sehr kostengünstig. Bestehende Zündsysteme können ohne großen Aufwand abgeändert werden.Since the damping system mainly consists of a few discs, preferably plastic, the solution is also very inexpensive. Existing ignition systems can be modified without much effort.

Auch ein bis hin zum vollständigen Einpacken des Zünders mit dem die Dämpfung aufnehmenden Material ist möglich und technisch machbar.Even up to the complete packing of the igniter with the damping absorbing material is possible and technically feasible.

Anhand eines Ausführungsbeispiels mit Zeichnung soll die Erfindung näher erläutert werden. Es zeigt die einzige Figur ein Geschoss 1 mit einem Heckteil 1a, in dem sich ein Zündsystem bestehend aus einem Zünder 2 und einem Zündverstärker 3 (wenn konstruktiv vorgesehen) befindet. Das Zündsystem wird durch beispielsweise einen Gewindering 4 oder einem ähnlich gearteten Befestigungselement im Geschoss 1 gehalten.Reference to an embodiment with drawing, the invention will be explained in more detail. It shows the only figure a projectile 1 with a rear part 1a, in which an ignition system consisting of an igniter 2 and a booster 3 (if structurally provided) is located. The ignition system is held in the projectile 1 by, for example, a threaded ring 4 or a similar fastening element.

Zwischen einem Zünderboden 5 und dem Geschoss 1 und / oder zwischen einer Zünderschulter 6 und dem Gewindering 4 ist wenigstens ein Dämpfungselement 7 eingefügt. Das scheiben- oder ringförmige (auch u-förmige) Dämpfungselement 7 besteht vorzugsweise aus Kunststoff (z. B. Polyethylen = PE) bzw. aus einem Material mit geringerer Schallimpedanz als das Material des Geschosses 1. Der Gewindering 4 wird vorzugsweise mit einem definierten Drehmoment angezogen. Dadurch wird erreicht, dass die Dämpfungsflächen des Dämpfungsmaterials 7 vollständig am Zündsystem anliegen und keine Spalten geschaffen werden. Gleichzeitig dient es dem Fixieren des Zündsystems und seiner Befestigung im Geschoss 1.Between a detonator base 5 and the projectile 1 and / or between an igniter shoulder 6 and the threaded ring 4 at least one damping element 7 is inserted. The disc-shaped or annular (also U-shaped) damping element 7 is preferably made of plastic (eg polyethylene = PE) or of a material with lower acoustic impedance than the material of the projectile 1. The threaded ring 4 is preferably provided with a defined torque dressed. This ensures that the damping surfaces of the damping material 7 completely abut the ignition system and no gaps are created. At the same time it serves to fix the ignition system and its attachment in the projectile. 1

Der Pfeil zeigt die Schussrichtung an. Beim Aufprall des Geschosses 1 auf ein nicht näher dargestelltes Ziel werden die entstehenden Schwingungen durch das / die Dämpfungselemente 7 aufgenommen. Die Zündung des Geschosses 7 selbst erfolgt bei verzögerter Zündung erst nach Penetration des Geschosses 1 durch das Ziel, wobei die restlichen Kräfte ausreichend sind, den Zünder zu initiieren.The arrow indicates the shooting direction. Upon impact of the projectile 1 on a not-shown target, the resulting vibrations are absorbed by the / the damping elements 7. The ignition of the projectile 7 itself takes place with delayed ignition only after penetration of the projectile 1 by the target, wherein the remaining forces are sufficient to initiate the detonator.

Claims (4)

Geschoss (1) mit einem Heckteil (1a) und einem Zünder (2), wobei zwischen einem Zünderboden (5) und dem Geschoss (1) und / oder zwischen einer Zünderschulter (6) und einem eventuellen Gewindering (4) oder dergleichen Befestigungselement wenigstens ein Dämpfungselement (7) eingefügt ist.Projectile (1) with a rear part (1a) and an igniter (2), wherein between a detonator bottom (5) and the projectile (1) and / or between an igniter shoulder (6) and a possible threaded ring (4) or the like fastener at least a damping element (7) is inserted. Geschoss nach Anspruch 1, dadurch gekennzeichnet, dass das Dämpfungselement (7) scheibenförmig, ringförmig oder topfförmig ausgeführt ist.Projectile according to claim 1, characterized in that the damping element (7) is disc-shaped, annular or cup-shaped. Geschoss nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Dämpfungselement (7) ein Material mit geringerer Schallimpedanz als das Material des Geschosses (1) ist.Projectile according to claim 1 or 2, characterized in that the damping element (7) is a material with lower acoustic impedance than the material of the projectile (1). Geschoss nach Anspruch 3, dadurch gekennzeichnet, dass das Dämpfungselement (7) ein Kunststoff, beispielsweise PE, ist.Projectile according to claim 3, characterized in that the damping element (7) is a plastic, for example PE.
EP09013134A 2008-11-17 2009-10-17 Igniter Withdrawn EP2187164A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008057769A DE102008057769A1 (en) 2008-11-17 2008-11-17 ignition device

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EP2187164A2 true EP2187164A2 (en) 2010-05-19
EP2187164A3 EP2187164A3 (en) 2012-05-16

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US (1) US8297189B2 (en)
EP (1) EP2187164A3 (en)
KR (1) KR101631320B1 (en)
DE (1) DE102008057769A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2012163758A1 (en) 2011-06-01 2012-12-06 Rheinmetall Waffe Munition Gmbh Booster, in particular for an artillery projectile

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US9146088B1 (en) * 2012-04-12 2015-09-29 The Boeing Company High shock survivable fuze
GB2536038B (en) * 2015-03-05 2019-07-24 Atlantic Inertial Systems Ltd Projectiles
US9851187B2 (en) * 2015-03-12 2017-12-26 Raytheon Company Shock mitigation assembly for a penetrating weapon
RU2590829C1 (en) * 2015-07-20 2016-07-10 Олег Савельевич Кочетов Apparatus for predicting development of emergency situation during accident on explosive facility

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US3292543A (en) * 1965-01-26 1966-12-20 Henry A Tisch Projectile
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WO2012163758A1 (en) 2011-06-01 2012-12-06 Rheinmetall Waffe Munition Gmbh Booster, in particular for an artillery projectile
DE102011103805A1 (en) 2011-06-01 2012-12-06 Rheinmetall Waffe Munition Gmbh Firing amplifier, in particular for an artillery projectile
DE102011103805B4 (en) * 2011-06-01 2017-10-26 Rheinmetall Waffe Munition Gmbh Firing amplifier, in particular for an artillery projectile

Also Published As

Publication number Publication date
US20100147178A1 (en) 2010-06-17
DE102008057769A1 (en) 2010-05-20
KR101631320B1 (en) 2016-06-16
EP2187164A3 (en) 2012-05-16
US8297189B2 (en) 2012-10-30
KR20100055344A (en) 2010-05-26

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