EP0411258B1 - Dispositif d'allumage pour une sous munition - Google Patents

Dispositif d'allumage pour une sous munition Download PDF

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Publication number
EP0411258B1
EP0411258B1 EP90109416A EP90109416A EP0411258B1 EP 0411258 B1 EP0411258 B1 EP 0411258B1 EP 90109416 A EP90109416 A EP 90109416A EP 90109416 A EP90109416 A EP 90109416A EP 0411258 B1 EP0411258 B1 EP 0411258B1
Authority
EP
European Patent Office
Prior art keywords
detonator
slide
fact
recess
housing
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.)
Expired - Lifetime
Application number
EP90109416A
Other languages
German (de)
English (en)
Other versions
EP0411258A2 (fr
EP0411258A3 (en
Inventor
Udo Sabranski
Gerhard Skowasch
Jürgen Funk
Siegfried Quick
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 Industrie AG
Original Assignee
Rheinmetall Industrie AG
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 Industrie AG filed Critical Rheinmetall Industrie AG
Publication of EP0411258A2 publication Critical patent/EP0411258A2/fr
Publication of EP0411258A3 publication Critical patent/EP0411258A3/de
Application granted granted Critical
Publication of EP0411258B1 publication Critical patent/EP0411258B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/44—Arrangements for disarming, or for rendering harmless, fuzes after arming, e.g. after launch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/18—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved
    • F42C15/184—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved using a slidable carrier

Definitions

  • the invention relates to a detonator for an explosive projectile, in particular a submunition projectile (bomblet), with an axially displaceable firing needle and a slide with detonator charge which can be displaced transversely to the longitudinal direction of the projectile, according to the preamble of patent claim 1.
  • Bomblet levels are submunition levels or daughter levels, which in large numbers, e.g. B. 63 pieces, transported from a large-caliber carrier floor over distances of up to 30 kilometers over a target area and there at a height of z. B. ejected 300 meters and mechanically defocused when falling.
  • a bomb detonator with a safety device which has a safety bolt which can be actuated by centrifugal force and which is designed so that it can be engaged in a corresponding recess in the slide for locking purposes.
  • a firing element of a pyrotechnic delay line which can be ignited by a second firing needle is provided for a self-dismantling of the projectile after the detonator has not been triggered in the event of a target impact by the main firing needle.
  • This can e.g. B. happen when such a projectile ejected from a carrier floor (bomblet) lands on soft ground, mud, snow, tree branches, tall grass or a camouflage net.
  • a disadvantage of the known bomblet construction is the fact that when the ignition device is in focus, the slide protrudes sideways far and unprotected from the igniter housing. This allows z. B. in rainy weather very easily malfunctions when initiating the detonator charge or the exposed igniter the delay charge for self-decomposition occur.
  • Another disadvantage is the arrangement of the second firing needle for igniting the ignition element on the outer unprotected end of the slide itself, which protrudes far out of the side of the igniter housing.
  • the second firing needle is provided with a heavy hammer and is rotatably fastened to the slide by means of a bolt.
  • the striking piece When focusing by moving the slide laterally out of the detonator housing, the striking piece should be activated by centrifugal force from the self-rotation of the bomblet, and the solid ignition needle should move about 90 ° on a pitch circle with a small radius and penetrate into the ignition element.
  • the shape of the ignition needle tip is solidly conical with a flattening on one side, possibly to facilitate penetration into the ignition element on a small circular arc.
  • This detonator construction also has the major disadvantage that large unbalances during rotation and thus destabilizing forces act on the bomblet due to the slide projecting far out of the detonator housing with an outside heavyweight firing pin impact piece.
  • the spring-loaded securing bolt 27 After reducing the swirl or eliminating centrifugal force, the spring-loaded securing bolt 27 also constantly presses against the side wall of the slide and acts due to its friction and braking effect also against free sliding of the slide. If the target hits softly, the detonator charge cannot be ignited by the first axially displaceable ignition needle. Such a bomblet is then a dangerous unexploded ordnance and can be brought to an immediate explosion triggered by the first firing pin or to a delayed explosion activated by the second firing pin by shocks or impacts, such as a kick.
  • an explosive projectile in particular a bomblet projectile.
  • the functional safety should be increased while taking into account improved or simplified production (laboratory work) and weight reduction.
  • the reference number 10 denotes an igniter housing, which is fixed on a bomblet housing 12 by means of a retaining ring 14.
  • a slide 16 Arranged within the detonator housing 10 is a slide 16 with detonator charge 18 which can be displaced transversely to the central axis A of the bomblet floor.
  • the illustration shows the slide 16 in the securing position, the detonator charge 18 being shifted laterally out of the straight line between a main firing needle 20 and an amplifier charge 22 arranged in the upper bomblet housing 12 in order to ignite the main explosive charge 24.
  • the centrally arranged main firing needle 20 is connected via a screw connection to a sleeve 26, which serves as an additional impact mass and can be displaced axially in the igniter housing 10.
  • the firing needle 20 is screwed into the sleeve 26, so that it is supported upwards or backwards against a shoulder of the igniter housing 10.
  • the tip 28 of the main firing needle 20 protrudes into a recess (blind hole) arranged on the top of the slide 16 and thus fixes the slide 16 in the securing position.
  • a folded stabilizing loop 30 is attached to the end of the main firing needle 20 protruding from the igniter housing 10.
  • a securing band 34 is wound around the swirl brake vanes 32 folded in.
  • the securing band 34 and the stabilizing loop 30 are held in their wound-up position by a hood-like, two-part plastic securing shell 36, which in turn is held in position by a spring steel securing ring 38.
  • the daughter floors are stacked inside one another as columns in a space-saving manner.
  • Such a neighboring bomb 60 which completely covers the detonator housing 10, is indicated in FIG.
  • the detonator housing 10 extends far into the conical free space of the shaped charge insert of the adjacent bomblet 60.
  • the stabilization loop 30 is pulled out of its folded-in rest position and unfolded.
  • the two securing shells 36 with securing ring 38 detach from the igniter housing 10 and release the securing tape 34.
  • the detachable securing band 34 then unwinds and releases the swirl brake blades 32 free, which swivel out due to the centrifugal forces caused by rotation and reduce the swirl of the now stabilized falling bomblet floor.
  • a torque acts on the firing needle 20, which unscrews a little to the rear from the sleeve 26, the tip 28 of the firing needle 20 lifts out of the recess in the slide 16 and the slide can - provided that it is released for this by separately acting other securing means - move it into its focusing position and is therefore in focus for a strike ignition.
  • the focus position is shown in Figure 2.
  • the two securing bolts 80 are pressed out of the recess 82 and the catch groove 84 against the force of the double-armed wire spring 92, and by the centrifugal force and the compressive force of the spring 40, the slide 16 moves into the focusing position.
  • the firing needle 20 which has been unscrewed from the blind hole and the locking pin 62 which is released by the swirl brake wings 32 and which is fastened on the slide 16 have made it possible to move the slide.
  • the self-destruct charge consisting of ignition element 44, delay section 46, reinforcement set 48 and explosive charge 50 is initiated by the flat second ignition needles 42 arranged laterally in the detonator housing 10.
  • the slider 16 is locked in the focus position by a spring tongue 54 integrated into the spring washer 52 and engaging in a corresponding recess 56 in the underside of the slider 16.
  • the spring tongue 54 is advantageously pressed down only when the slide 16 is moved; due to a flat gradation 98 above the spring tongue 54 in the underside of the slide 16 in the secured state there is no disadvantageous loading of the spring tongue 54 or a constant frictional connection between the slide 16 and spring tongue 54.
  • a safety pin 80 enters the extended catch groove 84 and locks the slide 16 in such a way that the second firing needle 42 is spaced from the ignition charge 44 of the self-dismantling charge remains and the detonator charge 18 remains decentrally inaccessible to the first main firing needle 20 in the interrupted ignition line. This ensures safe and reliable security against being picked up for such a bomblet.
  • the recess 82 and the catch groove 84 are formed on their end face 86 facing the compression spring 40 and the two securing bolts 80 in the circumferential area on their end faces each so as to be capable of engaging each other at an angle. Since two securing bolts 80 are provided in a detonator housing are, it is advantageous that each locking pin 80 is provided on both sides with the beveled end edge 98. This allows z. B. no more assembly errors with subsequent inoperability of the bomblet occur.
  • the beveling of the locking pin outer edge 90, which can be engaged with one another, and the end face 86 of the recess 82 and catch groove 84 is in each case between 10 ° to 45 °, but preferably about 20 °. If one of the securing bolts 80 catches in the recess 82 or catch groove 84, the slide 16 can no longer be moved into the ignition position by falling, bumping or rotating. This ensures great handling reliability of the detonator. In a normal firing order, the "teeth" or bevels of catch groove 84 and end edges 90 of securing bolts 80 do not come into engagement with one another.
  • the detonator construction according to the invention with the securing bolts 80 that can easily be inserted from the outside into the corresponding housing recesses, with the one-piece wire spring 92 and closing the housing recesses after inserting the locking bolt 80 by means of a bent-up tab 66 of the spring washer 52 is a simple and inexpensive way of production and simplified laboration given the items.
  • the igniter housing 10 is expediently provided on the lower outer circumference with a bevel 94 between 1 ° to 10 °, preferably approx. 5 °, for frictional mutual fixing (clamp fit) with a cup-shaped cover plate 58 with a flange edge 96. This covering and fixing of the inner parts in the detonator housing makes the bombardment of the bomb detonator according to the invention considerably easier.
  • the newly developed bomb detonator contains, in addition to the usual impact detonator function, also a pyrotechnic self-dismantling, which is activated after the bomblets have been ejected from the main floor.
  • a pyrotechnic self-dismantling which is activated after the bomblets have been ejected from the main floor.
  • the detonator has three separate, separate mechanical locks which lock the slide 16 serving as a detonator carrier: the ignition needle 20 or ignition needle tip 28, which dips into a blind bore in the slide 16, one of the two Swirl brake wing 32, which presses on the locking pin 62, which is pressed into the slide 16 and protrudes through the igniter housing 10, and two locking bolts 80, which each snap into the recess 82 or catch groove 84 on the slide 16.
  • the securing bolts 80 are primarily intended to be used for transportation, handling and lifting purposes. Should the fuse by the ignition needle and swirl brake fail during handling or transport of the bomblet, the compression spring 92 presses the slide 16 against the previously freely movable safety bolts 80.
  • the conical toothing (bevel) of the safety bolts 80 and slide 16 ensures that the Lock cannot be released even by impact or impact. Complete unlocking of the bomb detonator is therefore only possible if the securing bolts 80 release the slide 16 before the ignition needle 20 is unscrewed and the swirl brake or swirl brake wing 32 opens. To do this, the bomblet must rotate at a certain minimum speed. While the securing bolts 80 of the bomb detonators in the bomblet column arranged centrally in the carrier floor already unlock when firing, the bomblet columns arranged in the securing bolts 80 in the outer circumference of the carrier floor can only after they have been ejected from the carrier floor unlock at the same time.
  • the free-flying bomblets After ejection from the carrier floor, the free-flying bomblets then rotate about their own axis, so that the centrifugal force presses the securing bolts 80 against the force of the return spring 92 out of the recess 82 and catch groove 84 of the slide 16.
  • the securing bolts 80 in the middle bomblet column also move back into the securing position as soon as the speed of the carrier floor falls below the minimum value. After recovering the main floor, the bomblets can then be safely dismantled.
  • the stabilizing band 30 unfolds and unscrews the ignition needle 20.
  • the wound securing band 34 exposed to the air flow begins to loosen in layers until the swirl brake wings 32 are exposed, swing open and finally release the securing pin 62 fastened on the slide 16.
  • the detonator remains secured. This ensures the safety of the front pipe, ie the detonator is only armed when the individual bomblets are so far apart after being ejected that they are less likely to collide and trigger pre-ignition.
  • the fully unlocked and unlocked slide 16 moves, accelerated by the spring force (40) and centrifugal force into the ignition position, where it is locked by the spring tongue 54.
  • the pyrotechnic burning section accommodated in the slide 16 is ignited for the self-dismantling.
  • the self-destruct charge detonates the detonator 18 if the impact ignition mechanism should fail. This increases the likelihood of unexploded ordnance significantly reduced.
  • the slide 16 is caught again by one of the two compression spring-loaded securing bolts 80, which engages in the catch groove 84, as soon as the speed of the bomblet drops below a certain minimum speed. In this position, neither the detonator nor the delay element can be pierced. This means that impact ignition is no longer possible, but the bomblet is completely safe.
  • the safety pin 62 protruding from the igniter housing 10 on the slide 16 enables the slide position to be recognized and thus a distinction made between the duds in tapping failures and those which are still in the safety position.

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

Claims (8)

  1. Allumeur pour un projectile explosif, en particulier un projectile de sous-munition (bombette), avec une aiguille d'allumage (20) déplaçable axialement et un curseur (16) déplaçable transversalement par rapport à l'axe longitudinal (A) du projectile, avec une charge de détonateur (18) et une charge d'autodestruction (44, 46, 48, 50) à laquelle est associé latéralement et à distance une deuxième aiguille d'allumage (42), latéralement à côté du curseur (16) étant prévu dans le boîtier d'allumeur (10) un boulon de sécurité (80), actionnable sous l'effet de la force centrifuge, qui est réalisé de façon à pouvoir s'engager à des fins de blocage dans un évidement (82) correspondant ménagé dans le curseur (16), caractérisé par les propriétés ci-après :
    a) sur le curseur (16) est disposée une rainure de captage (84) prolongée par rapport à l'évidement (82);
    b) le curseur (16), après cessation de l'effet de la force centrifuge peut être bloqué par un nouvel engagement d'un boulon de sécurité supplémentaire (80) chargé par un ressort, en une position intermédiaire, dans la rainure de captage (84);
    c) la deuxième aiguille d'allumage (42) fixe par rapport au boîtier, en position intermédiaire du curseur (16), reste espacée de la charge d'autodestruction (44, 46, 48, 50);
    d) la charge de détonateur reste dans la position intermédiaire du curseur (16), de façon décentrée, dans la ligne d'allumage interrompue, avec la première aiguille d'allumage (20).
  2. Allumeur selon la revendication 1, caractérisé en ce que l'évidement (82) et la rainure de captage (84) réalisée dans le curseur (16) sont chaque fois réalisés, au moins sur une de leurs faces frontales (86), ainsi que le boulon de sécurité (80) dans la zone périphérique, sur l'une de ses faces d'extrémité (88), obliquement l'un par rapport à l'autre.
  3. Allumeur selon la revendication 1 ou 2, caractérisé en ce que le chanfreinage de l'arête extérieure (90) du boulon de sécurité donnant une possibilité d'engagement l'un dans l'autre, ainsi que de la face frontale (86) de l'évidement (82) et de la rainure de captage (84), est chaque fois compris entre 10° et 45°, fait de préférence à peu près 20°.
  4. Allumeur selon la revendication 1, 2 ou 3, caractérisé en ce que le boulon de sécurité (80) est pourvu des deux côtés de l'arête frontale (90) chanfreinée.
  5. Allumeur selon la revendication 1, 2, 3 ou 4, caractérisé en ce que des deux côtés du curseur (16) est chaque fois prévu un évidement (82) ou bien une rainure de captage (84) et chaque fois un boulon de sécurité (80) correspondant.
  6. Allumeur selon l'une des revendications 1 à 5 précédentes, caractérisé en ce que les deux boulons de sécurité (80) peuvent être enfoncés par un ressort (92) commun, en forme de fil à deux bras, dans les évidements (82) et dans la rainure de captage (84) ménagée dans le curseur (16).
  7. Allumeur sel on l'une des revendications 1 à 6 précédentes, caractérisé en ce que le boîtier d'allumeur (10) présente sur la périphérie extérieure inférieure un chanfreinage (94) destiné à donner une fixation mutuelle avec liaison par le frottement, à une tôle de recouvrement (58) en forme de godet ayant un bord en bride (96) destiné à recouvrir les parties internes dans le boîtier d'allumeur (10).
  8. Allumeur sel on l'une des revendications 1 à 7 précédentes, caractérisé en ce que le boîtier d'allumeur (10) présente sur la périphérie extérieure un chanfreinage (94) faisant de 1 à 10°, de préférence 5°.
EP90109416A 1989-07-29 1990-05-18 Dispositif d'allumage pour une sous munition Expired - Lifetime EP0411258B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3925238A DE3925238A1 (de) 1989-07-29 1989-07-29 Zuender fuer ein bombletgeschoss
DE3925238 1989-07-29

Publications (3)

Publication Number Publication Date
EP0411258A2 EP0411258A2 (fr) 1991-02-06
EP0411258A3 EP0411258A3 (en) 1993-03-03
EP0411258B1 true EP0411258B1 (fr) 1995-09-06

Family

ID=6386175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90109416A Expired - Lifetime EP0411258B1 (fr) 1989-07-29 1990-05-18 Dispositif d'allumage pour une sous munition

Country Status (3)

Country Link
US (1) US5022325A (fr)
EP (1) EP0411258B1 (fr)
DE (2) DE3925238A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2650662B1 (fr) * 1989-08-01 1991-10-11 France Etat Armement Dispositif d'amorcage de chaine pyrotechnique pour sous-munition d'obus cargo
DE4226129C2 (de) * 1992-08-07 1996-09-26 Nico Pyrotechnik Aufschlagzünder mit Vorrohrsicherheit für ein Übungsgeschoß
FR2699660B1 (fr) * 1992-12-18 1995-02-24 Giat Ind Sa Système d'amorçage et d'auto-destruction d'une munition, en particulier d'une sous-munition destinée à être éjectée d'un obus cargo avec un mouvement de rotation propre autour d'un axe.
DE4303128C2 (de) * 1993-02-04 1995-10-12 Rheinmetall Ind Gmbh Zündvorrichtung für Geschosse, Raketen, Bomblets und Minen mit einer pyrotechnischen Selbstzerlegervorrichtung
DE4335022C2 (de) * 1993-10-14 1998-06-10 Rheinmetall Ind Ag Zünd- und Sicherungseinrichtung mit Selbstzerlegungseinrichtung für ein mit einer Hohlladungseinlage versehenes Granatengeschoß
FR2737293B1 (fr) * 1995-07-27 1997-10-17 Giat Ind Sa Systeme d'amorcage de la charge explosive d'une sous-munition embarquee dans un engin porteur
DE19916775C2 (de) * 1999-04-15 2002-12-05 Rheinmetall W & M Gmbh Submunitionsgeschoß
US6336407B1 (en) * 2000-02-10 2002-01-08 The United States Of America As Represented By The Secretary Of The Army Pyrotechnic slide assembly
US6302025B1 (en) * 2000-04-17 2001-10-16 The United States Of America As Represented By The Secretary Of The Army Self destruct fuze with improved slide assembly
FR2816400B1 (fr) * 2000-11-07 2003-04-04 Giat Ind Sa Dispositif d'amorcage de la charge explosive d'une sous-munition
DE102008032744B4 (de) * 2008-07-11 2010-04-01 Junghans Microtec Gmbh Zünder für ein Geschoss
CN104613828B (zh) * 2015-02-05 2016-03-02 北京理工大学 一种用于旋转弹药的mems离心保险机构及其保险方法
KR101595699B1 (ko) * 2015-06-18 2016-02-18 주식회사 풍산 신관 보호형 자탄몸체가 구비된 분산탄용 자탄
CN114777583B (zh) * 2022-04-12 2023-10-20 北京理工大学 一种双层可复位电磁与爆炸逻辑组合安全系统及实现方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371608A (en) * 1967-06-01 1968-03-05 Avco Corp Fuze with delay firing and impact firing features
US3603259A (en) * 1968-06-26 1971-09-07 Avco Corp Fuze setback and angular acceleration detent
US3913483A (en) * 1972-08-11 1975-10-21 Us Army Grenade with fuze
US4030418A (en) * 1975-10-30 1977-06-21 The United States Of America As Represented By The Secretary Of The Army Gravity deployed mine with combined upper clearing charge firing and delayed main charge initiation
US3998164A (en) * 1975-12-15 1976-12-21 The United States Of America As Represented By The Secretary Of The Army Self-destruct delay fuze
US4004514A (en) * 1976-01-20 1977-01-25 The United States Of America As Represented By The Secretary Of The Navy Roll rate stabilized wrap around missile fins
US4455940A (en) * 1982-06-28 1984-06-26 The United States Of America As Represented By The Secretary Of The Army Random time delay fuze
DE3333312A1 (de) * 1983-09-15 1985-04-04 Rheinmetall GmbH, 4000 Düsseldorf Zuender fuer ein tochtergeschoss
DE3524080C2 (de) * 1985-07-05 1996-07-18 Rheinmetall Ind Gmbh Zünder für einen Gefechtskopf mit einem durch Formschluß gesicherten Schlagstück
ZA867954B (en) * 1985-12-18 1987-06-24 Israel State Cluster bomb grenade with means for spin rate attenuation
ES8706945A1 (es) * 1986-04-08 1987-07-01 Instalaza Sa Espoleta para granada explosiva
DE3624713C2 (de) * 1986-07-22 1995-09-07 Diehl Gmbh & Co Aufschlagzünder mit Selbstzerlegeeinrichtung für einen Bomblet
IL82066A (en) * 1987-03-31 1992-03-29 Israel State Fuse for sub-munition warhead
DE3740966A1 (de) * 1987-12-03 1989-06-15 Diehl Gmbh & Co Pyrotechnischer zuender fuer geschosse, raketen, bomblets und minen

Also Published As

Publication number Publication date
DE3925238A1 (de) 1991-01-31
DE59009612D1 (de) 1995-10-12
US5022325A (en) 1991-06-11
EP0411258A2 (fr) 1991-02-06
EP0411258A3 (en) 1993-03-03

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