EP2941620A1 - Self-destruction mechanism for a fuze - Google Patents

Self-destruction mechanism for a fuze

Info

Publication number
EP2941620A1
EP2941620A1 EP13814482.9A EP13814482A EP2941620A1 EP 2941620 A1 EP2941620 A1 EP 2941620A1 EP 13814482 A EP13814482 A EP 13814482A EP 2941620 A1 EP2941620 A1 EP 2941620A1
Authority
EP
European Patent Office
Prior art keywords
spring
self
ammunition
rotation
cartridge
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
EP13814482.9A
Other languages
German (de)
French (fr)
Other versions
EP2941620B1 (en
Inventor
Kolja Garber
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 EP2941620A1 publication Critical patent/EP2941620A1/en
Application granted granted Critical
Publication of EP2941620B1 publication Critical patent/EP2941620B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/14—Double fuzes; Multiple fuzes
    • F42C9/16—Double fuzes; Multiple fuzes for self-destruction of ammunition
    • F42C9/18—Double fuzes; Multiple fuzes for self-destruction of ammunition when the spin rate falls below a predetermined limit, e.g. a spring force being stronger than the locking action of a centrifugally-operated lock

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Automotive Seat Belt Assembly (AREA)

Abstract

The invention relates to a mechanical self-destruction device (10) in ammunition (11). The mechanical self-destruction device comprises a rotational spring (2), a lockable body (3), and a spring (4) that interacts with said body (3). The body (3) is locked by a locking mechanism (7) and a spring-supported mass (6). During the acceleration of the cartridge/ammunition (11), the body (3) is accelerated downward and the spring (2) is stressed. By means of the rotation of the cartridge (11), the locking mechanism (7) is pressed into a spring-supported mass (6) and the body (3) is locked. During the arming sequence of the cartridge (11), a rotor (A) is pivoted from the safe position to the shaft position. If, however, the rotation falls below a specified/certain rotational speed, the locking mechanism (7) is moved back into the original position. Connected therewith is the release of the locking of the locked body (3), which is accelerated upward by the rotational spring (2). By means of the upward motion of the body (3), the body can drive upward the rotor (A) together with a detonator in the case of a nose fuze or a piercing needle in the case of a base fuze and thus set off the detonator/fuze.

Description

BESCHREIBUNG  DESCRIPTION
Selbstzerlegungsmechanismus für einen Zünder Self-disassembly mechanism for an igniter
Die Erfindung beschäftigt sich mit der Sicherheitserhöhung von modernen Munitionen, beispielsweise einer 40mm Aufschlagmunition, durch Einbindung einer mechanischen Selbst- zeriegungseinrichtung in die Munition. Diese ist durch einen einfachen Aufbau gekennzeichnet und besteht aus einer Rotationsfeder, einem verriegelbaren Körper sowie einer mit diesem Körper zusammenwirkenden Feder. Verriegelt wird der Körper durch eine Verriegelung und eine federgestützte Masse. The invention is concerned with the safety enhancement of modern ammunition, for example a 40mm impact ammunition, by incorporating a mechanical self-leveling device into the ammunition. This is characterized by a simple structure and consists of a rotational spring, a lockable body and a cooperating with this body spring. The body is locked by a lock and a spring-supported mass.
Derartige Munitionen bietet die Anmelderin als Low-, Medium- und High - Velocity Patronen an, die sich durch hohe Präzision und Zuverlässigkeit unter allen klimatischen Bedingungen hervorheben(http://www.rheinmetall- defence.de/de/rheinmetall defence/svstems and products/weapons and ammunition/infant rvMOmm ammunition/index.php). The applicant offers such ammunition as low, medium and high-velocity cartridges, which stand out due to their high precision and reliability under all climatic conditions (http: //www.rheinmetall- defense.de/de/rheinmetall defense / svstems and products / weapons and ammunition / infant rvMOmm ammunition / index.php).
Eine wichtige Sicherheitsanforderung derartiger Munitionen ist, die Wahrscheinlichkeit eines scharfen Zünders etc. zu reduzieren, d.h. ein Zünden zu verhindern, wenn dieses unerwünscht ist. Zu diesem Zweck werden zusätzlich Selbstzerlegungseinrichtungen bzw. - mechanismen in die Munition integriert. Diese sind bereits von verschiedenen Munitionen bekannt und können elektronisch, pyrotechnisch oder mechanisch ausgeführt sein.  An important security requirement of such ammunition is to reduce the likelihood of a sharp detonator, etc., e.g. to prevent ignition if this is undesirable. For this purpose, self-decomposition devices or mechanisms are additionally integrated into the ammunition. These are already known from various ammunition and can be performed electronically, pyrotechnic or mechanical.
Aus der DE 10 2006 047 552 A1 ist eine elektronische Sicherungsvorrichtung für einen Zünder eines Projektils bekannt. Eine weitere elektronische Sicherungseinrichtung offenbart die WO 2011/072774 A1. Eine Sicherungseinrichtung für einen Zünder eines Geschosses mit einem Rotor zum Unterbrechen einer Zündkette beschreibt die DE 20 2009 008 861 U1. Die DE 199 19 001 A1 gibt einen pyrotechnischen Selbstzerleger für eine Munition an. Mechanische Selbstzerlegungseinrichtungen basieren häufig auf die Einbindung von Kugeln oder Kugelpaketen, die durch den Abschuss nach hinten beschleunigt werden und durch die Rotation nach außen gedrückt werden, um so den Anzünd-Mechanismus in einer vorgespannten Stellung zu halten. Sobald die Rotation unter einen bestimmten Wert fällt, gleiten die Ku- ge!n in ihre Ursprungsposition und eine Feder setzt den Selbstzerlegungsmechanismus in Gang (DE 197 26 951 C2). Einen Bombletzünder mit einer Seibstzerlegung offenbart auch die DE 100 40 800 A1 , einen seibstneutraüsierenden Bombletzünder die DE 44 21 353 C2. From DE 10 2006 047 552 A1 an electronic security device for an igniter of a projectile is known. Another electronic security device discloses WO 2011/072774 A1. A safety device for an igniter of a projectile with a rotor for breaking a detonating chain is described in DE 20 2009 008 861 U1. DE 199 19 001 A1 specifies a pyrotechnic self-destructor for ammunition. Mechanical self-destructors are often based on the incorporation of balls or ball packages, which are accelerated backwards by the launch and are forced outward by rotation so as to maintain the firing mechanism in a biased position. As soon as the rotation falls below a certain value, the cou- ge! n in their original position and a spring sets the self-separation mechanism in motion (DE 197 26 951 C2). A bomber with a Sebststzerlegung also discloses the DE 100 40 800 A1, a seibstneutraüsierenden Bombletzünder DE 44 21 353 C2.
Selbstzerlegungseinrichtungen für 40mm Munitionen sind aber auch der US 6,142,080 A oder der US 6,145,439 A entnehmbar. Das Geschoss der US 6,142,080 A umfasst einen so genannten Rotor-Sicherheitsaktuator mit einem Neutralisationssystem, das nach dem Start scharf gemacht wird. Die Nutzung eines RC- Zeitzählers schlägt die US 6,145,439 A vor. Self-decomposers for 40mm ammunition but are also the US 6,142,080 A or US 6,145,439 A removable. The projectile of US 6,142,080 A comprises a so-called rotor safety actuator with a neutralization system, which is made sharp after starting. The use of an RC time counter suggests US 6,145,439 A.
Die vorgenannten mechanischen Lösungen haben den Nachteil, dass für die Integration selbiger der eigentliche Wirkraum in der Patrone reduziert wird, da der Aufbau der Einrichtungen einen relativ hohen Piatzbedarf bedingt. Zudem kann es aufgrund eines stattfindenden Energieabbaus dazu kommen, dass der Detonator nicht mehr die notwendige Energie erhält, um auszulösen. The above-mentioned mechanical solutions have the disadvantage that for the integration selbiger the actual effective space in the cartridge is reduced, since the structure of the facilities requires a relatively high Piatzbedarf. In addition, it may happen due to an ongoing energy reduction that the detonator no longer receives the necessary energy to trigger.
Hier stellt sich die Erfindung die Aufgabe, eine Selbstzerlegungseinrichtung aufzuzeigen, mit der die vorgenannten Nachteile vermieden werden. Here, the invention has the object to show a self-decomposition device with which the aforementioned disadvantages are avoided.
Gelöst wird die Aufgabe durch die Merkmale des Patentanspruchs 1. Vorteilhafte Ausgestaltungen listen die Unteransprüche auf. The object is achieved by the features of claim 1. Advantageous embodiments list the subclaims.
Der Erfindung liegt die Idee zugrunde, eine mechanische Selbstzerlegungseinrichtung auch nachträglich in die Munition zu implementieren bzw. implementieren zu können. Die Einrichtung setzt sich unter anderem aus einem Setback (Rückschlag) -Körper, einer Setback (Rückschlag) -Feder sowie einer Art Verriegelung / Verriegelungsstift zusammen. The invention is based on the idea to be able to implement or implement a mechanical self-decomposition device also later in the ammunition. The set consists of, among other things, a setback body, a setback spring and a kind of locking / locking pin.
Während der Beschleunigung der Patrone / Munition wird dieser Körper nach unten beschleunigt, die Feder gespannt. Durch die Rotation der Patrone wird der Verriegelungsstift in eine federgestützte Masse gedrückt, der Körper mit dem Gehäuse verriegelt. Dadurch wird verhindert, dass sich der Körper nach oben bewegen kann. Während der Armierungssequenz der Patrone wird ein Rotor von der Sichersteilung in die Schaftstellung geschwenkt. In dieser Position ist der Zünder scharf, die Munition einsatzbereit. Beim Aufschlagen der Munition kann der Zünder aktiviert werden. During acceleration of the cartridge / ammunition, this body is accelerated downwards, the spring tensioned. The rotation of the cartridge pushes the locking pin into a spring-loaded mass, locking the body to the housing. This prevents the body from moving upwards. During the arming sequence of the cartridge, a rotor is pivoted from the safety division to the shaft position. In this position, the detonator is sharp, the ammunition ready for use. When opening the ammunition, the detonator can be activated.
Fällt die Rotation jedoch unterhalb einer vorgegebenen / bestimmten Drehzahl, - unerwünschter und sicherheitskritischer Zustand - ist bzw. wirkt nunmehr die Federkraft der Rotationsfeder größer als die Rotationskraft, die auf die (den) Verriegelung (-sstift) wirkt. Die Ver- riegelung / der Verriegelungsstift wird wieder in seine Ursprungsposätion bewegt. Damit verbunden ist das Lösen der Verriegelung des verriegelten Körpers, der durch die Setback- Feder nach oben beschleunigt wird. Durch die Bewegung des Köpers nach oben kann dieser den Rotor mit Detonator beim Kopfzünder oder eine Anstichnadel beim Bodenzünder nach oben treiben und damit den Detonator / Zünder zünden. Die vorgenannte Idee ist unabhängig des Zünderdesigns verwendbar. However, if the rotation falls below a predetermined / certain speed, - unwanted and safety-critical state - is or now the spring force of the rotary spring is greater than the rotational force acting on the (the) lock (-stift). The Ver- locking / the locking pin is moved back to its original position. Associated with this is the release of the locking of the locked body, which is accelerated upwards by the setback spring. By the movement of the body upwards this can drive the rotor with detonator at the head detonator or a tapping needle at the bottom igniter upwards and thus ignite the detonator / detonator. The above idea is usable independently of the igniter design.
Durch die Rotationsfeder selbst kann zudem die Auslöseschwelle, bei welcher Rotationsgeschwindigkeit des Zünders die Selbstzerlegung aktiviert wird, eingestellt werden. Der Verriegelungsstift verriegelt den Körper so lange, bis die einstellbare Rotationsgeschwindigkeit des Zünders unterschritten wird. Diese ist abstimmbar mit der Federkraft der Rotationsfeder. Mit Unterschreiten der Rotationsgeschwindigkeit wird dann ohne Verlust der Setback- Feder- Energie der Körper entriegelt. Der Setback- Körper kann gleichzeitig als Setback- Sicherung genutzt werden. Vorteilhaft ist auch, dass ein Nachrüsten bei Zündern ohne Selbstzerstörungseinrichtung aber auch bei Zündern mit einer pyrotechnischen Selbstzerlegung möglich ist. By the rotation spring itself can also the triggering threshold, at which rotational speed of the igniter, the self-decomposition is activated, are set. The locking pin locks the body until it falls below the adjustable speed of rotation of the igniter. This is tunable with the spring force of the rotary spring. With falling below the rotational speed of the body is then unlocked without loss of setback spring energy. The setback body can also be used as a setback backup. It is also advantageous that retrofitting is possible in the case of detonators without a self-destructing device, but also in the case of detonators with pyrotechnic self-decomposition.
Anhand eines Ausführungsbeispieis mit Zeichnung soll die Erfindung näher erläutert werden. Es zeigt: Reference to an Ausführungsbeispieis with drawing, the invention will be explained in more detail. It shows:
Fig. 1 eine Schnittdarstellung der Selbstzerlegungseinrichtung in einem Kopfzünder, 1 is a sectional view of the self-decomposition device in a head igniter,
Fig. 2 eine Draufsichtdarstellung der Selbstzerlegungseinrichtung aus Fig. 1. FIG. 2 is a plan view of the self-decomposing device of FIG. 1. FIG.
Fig. 1 zeigt eine Selbstzerlegungseinrichtung 10 nach der Idee der Erfindung. Die Selbstzerlegungseinrichtung 10 besteht hier bevorzugt aus einer Rotationsfeder 2, einem Körper 3 sowie einer mit diesem Körper 3 zusammenwirkenden Feder 4. Die Selbstzerlegungseinrichtung 10 kann von einem oberen Gehäuse 1 und einem unteren Gehäuse 5 umschlossen sein. Diese Variante ist immer dann zu bevorzugen, wenn eine Nachrüstung der Selbstzerie- gungseinrichtung 10 vorgesehen ist. Mit 6 ist eine Federmasse und mit 7 eine Rotationsperre (z. B. Verriegelungsstift) gekennzeichnet. Mit 12 angedeutet ist ein (Kopf-) Zünder einer Munition 1 . Fig. 1 shows a self-decomposition device 10 according to the idea of the invention. The self-decomposition device 10 here preferably consists of a rotational spring 2, a body 3 and a spring 4 cooperating with this body 3. The self-decomposition device 10 may be enclosed by an upper housing 1 and a lower housing 5. This variant is always to be preferred if retrofitting of the self-commutation device 10 is provided. 6 denotes a spring mass and 7 a rotation lock (eg locking pin). Indicated at 12 is a (head) detonator of an ammunition. 1
Die Selbstzerlegungseinrichtung 10 wirkt mit einem Rotor A mit einem Detonator zusammen (Fig. 2). Die Funktionsweise ist wie folgt: The self-decomposition device 10 cooperates with a rotor A with a detonator (FIG. 2). The operation is as follows:
Während der Beschleunigung der Patrone / Munition 12 wird dieser Körper 3 nach unten beschleunigt, die Feder 4 gespannt. Durch die Rotation der Patrone wird die Rotationssperre 7 in die federgestützte Masse 6 gedrückt, der Körper 3 mit dem Gehäuse 1 verriegelt. Dadurch wird verhindert, dass sich der Körper 3 nach oben bewegen kann. During acceleration of the cartridge / ammunition 12, this body 3 is accelerated downward, the spring 4 tensioned. Due to the rotation of the cartridge, the rotation lock 7 is pressed into the spring-supported mass 6, the body 3 is locked to the housing 1. This prevents the body 3 from moving upward.
Während der Armierungssequenz der Patrone, wird ein Rotor A von der Sicherstellung in die Schaftstellung geschwenkt. During the arming sequence of the cartridge, a rotor A is pivoted from securing to the shaft position.
Fällt die Rotation unterhalb einer vorgegebenen / bestimmten Drehzahl, wird die Rotationssperre 7 wieder in die Ursprungsposition bewegt. Damit verbunden ist das Lösen der Verriegelung der Körpers 3, der durch die Feder 4 nach oben beschleunigt wird. Durch die Bewegung des Köpers 3 nach oben kann dieser den Rotor A mit Detonator beim Kopfzünder oder eine Anstichnadel (nicht näher dargestellt) beim Bodenzünder nach oben treiben, diesen zünden. If the rotation falls below a predetermined / certain speed, the rotation lock 7 is moved back to the original position. This is associated with the release of the locking of the body 3, which is accelerated by the spring 4 upwards. By the movement of the body 3 upwards this can drive the rotor A with detonator at the head detonator or a tapping needle (not shown in detail) at the bottom igniter up, ignite this.

Claims

PATENTANSPRÜCHE
1. Selbstzerlegungseinrichtung (10) für eine Munition (11) mit einem Kopf- und / oder Bodenzünder (12), gekennzeichnet durch eine Rotationsfeder (2), einen verriegelbaren Körper (3) sowie eine mit diesem Körper (3) zusammenwirkenden Feder (4), einer Verriegelung (7) und einer federgestützten Masse (6), wobei bei Beschleunigung der Munition (11) der Körper (3) nach unten beschleunigt, die Feder (4) gespannt und durch die Rotation der Munition (1 1) die Rotationssperre (7) in die federgestützte Masse (6) gedrückt wird, sodass der Körper (3) verriegelt ist und bei Unterschreiten einer bestimmten Drehzahl der Munition (1 1) das Entriegeln erfolgt. A self-decomposition device (10) for an ammunition (11) having a head and / or base igniter (12), characterized by a rotation spring (2), a lockable body (3) and a spring (4) cooperating with this body (3) ), a lock (7) and a spring-supported mass (6), accelerated when accelerating the ammunition (11) of the body (3) down, the spring (4) tensioned and by the rotation of the ammunition (1 1) the rotation lock (7) is pressed into the spring-supported mass (6), so that the body (3) is locked and when falling below a certain speed of the ammunition (1 1) unlocking takes place.
2. Selbstzerlegungseinrichtung nach Anspruch 1 , gekennzeichnet dadurch, dass die Selbstzerlegungseinrichtung (10) von einem oberen Gehäuse (1) und einem unteren Gehäuse (5) umschlossen ist. 2. Selbstzerlegungseinrichtung according to claim 1, characterized in that the self-decomposition device (10) by an upper housing (1) and a lower housing (5) is enclosed.
3. Selbstzerlegungseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass über die Feder (2) die Auslöseschwelle eingestellt wird, bei welcher Rotationsgeschwindigkeit des Zünders ( 2) die Selbstzerlegung aktiviert wird. 3. Self-decomposition device according to claim 1 or 2, characterized in that on the spring (2) the triggering threshold is set, at which rotational speed of the igniter (2), the self-decomposition is activated.
4. Selbstzeriegungseinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Körper (3) gleichzeitig als Sicherung der Selbstzerlegungseinrichtung fungiert. 4. Selbstzeriegungseinrichtung according to one of claims 1 to 3, characterized in that the body (3) simultaneously acts as a backup of the self-decomposition device.
EP13814482.9A 2013-01-07 2013-12-11 Self-destruction mechanism for a fuze Active EP2941620B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013000050.5A DE102013000050B3 (en) 2013-01-07 2013-01-07 Auto decomposition mechanism for a detonator
PCT/EP2013/076253 WO2014106565A1 (en) 2013-01-07 2013-12-11 Self-destruction mechanism for a fuze

Publications (2)

Publication Number Publication Date
EP2941620A1 true EP2941620A1 (en) 2015-11-11
EP2941620B1 EP2941620B1 (en) 2017-09-13

Family

ID=49885215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13814482.9A Active EP2941620B1 (en) 2013-01-07 2013-12-11 Self-destruction mechanism for a fuze

Country Status (3)

Country Link
EP (1) EP2941620B1 (en)
DE (1) DE102013000050B3 (en)
WO (1) WO2014106565A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3112202B1 (en) * 2020-07-02 2022-07-01 Dixi Microtechniques ROCKET COMPRISING A SELF-DESTRUCTION DEVICE FOR A GIRATORY PROJECTILE

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Publication number Priority date Publication date Assignee Title
NL203904A (en) * 1956-01-24
US3366059A (en) * 1967-01-09 1968-01-30 Avco Corp Fuze for spin stabilized projectiles
DE3835888A1 (en) * 1988-10-21 1990-04-26 Rheinmetall Gmbh GRENADE BULLET
DE4421353C2 (en) * 1994-06-17 1998-02-05 Junghans Gmbh Geb Self-neutralizing bomb detonator
DE19726951C2 (en) * 1997-06-25 1999-12-16 Rheinmetall W & M Gmbh Detonator for a swirl projectile with a self-dismantling unit arranged in the locking bolt for the detonator carrier
US6145439A (en) * 1998-01-14 2000-11-14 General Dynamics Armament Systems, Inc. RC time delay self-destruct fuze
US6142080A (en) * 1998-01-14 2000-11-07 General Dynamics Armament Systems, Inc. Spin-decay self-destruct fuze
DE19919001A1 (en) * 1999-04-27 2000-11-09 Junghans Gmbh Geb Pyrotechnic self-dismantling for ammunition
DE10040800A1 (en) * 2000-08-21 2002-03-28 Rheinmetall W & M Gmbh Self-destructing bomb detonators
DE102006047552A1 (en) * 2006-10-07 2008-04-24 Junghans Microtec Gmbh Securing device for the detonator of a projectile
DE202009008861U1 (en) * 2009-06-27 2010-11-11 Junghans Microtec Gmbh Safety device for a projectile
DE102009058718B4 (en) * 2009-12-17 2011-12-08 Junghans Microtec Gmbh Safety device for an igniter of a projectile

Non-Patent Citations (2)

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Title
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See also references of WO2014106565A1 *

Also Published As

Publication number Publication date
WO2014106565A1 (en) 2014-07-10
EP2941620B1 (en) 2017-09-13
DE102013000050B3 (en) 2014-01-30

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