EP0411258A2 - Dispositif d'allumage pour une sous munition - Google Patents

Dispositif d'allumage pour une sous munition Download PDF

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Publication number
EP0411258A2
EP0411258A2 EP19900109416 EP90109416A EP0411258A2 EP 0411258 A2 EP0411258 A2 EP 0411258A2 EP 19900109416 EP19900109416 EP 19900109416 EP 90109416 A EP90109416 A EP 90109416A EP 0411258 A2 EP0411258 A2 EP 0411258A2
Authority
EP
European Patent Office
Prior art keywords
slide
detonator
charge
housing
recess
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
EP19900109416
Other languages
German (de)
English (en)
Other versions
EP0411258A3 (en
EP0411258B1 (fr
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
Rheinmetall 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 Industrie AG, Rheinmetall GmbH 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 ignition needle and a slide with a detonator charge which can be displaced transversely to the longitudinal direction of the projectile.
  • a detonator for an explosive projectile in particular a submunition projectile (bomblet)
  • a submunition projectile bomblet
  • an axially displaceable ignition needle and a slide with a detonator charge which can be displaced transversely to the longitudinal direction of the projectile.
  • 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 be mechanically fired when falling.
  • EP-A-0 284 923 discloses a bomb detonator with a safety device which has a safety bolt which can be actuated by centrifugal force and which is designed to be able to 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 laterally far and unprotected from the igniter housing. As a result, 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 ignition needle for igniting the ignition element on the outer unprotected end of the slide itself, which protrudes far out of the side of the fuse housing.
  • the second ignition needle is provided with a heavy striking piece 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 presses constantly 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 activated by the second firing pin by an impact or shock, 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 in place 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 one inside the other in a space-saving manner as columns.
  • Such a neighboring bomblet 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 stabilizing 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 swing out due to the centrifugal forces caused by the 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 additional safety devices that act separately - 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 or longitudinal 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 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 firing 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 there is no disadvantageous load on the spring tongue 54 or no permanent frictional connection between the slide 16 and spring tongue 54 in the secured state.
  • the securing bolt 80 enters the extended catch groove 84 (longitudinal groove) and locks the slide 16 in such a way that the second firing needle 42 is removed from the ignition set 44 the self-decomposing charge remains spaced 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 or the longitudinal groove 84 on its end face 86 facing the compression spring 40 and the two securing bolts 80 in the circumferential area are each designed to be correspondingly obliquely to one another or to engage with one another at their end faces. Since two safety bolts 80 are provided in a fuse 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 bolt outer edge 90 which can be engaged with one another and the end face 86 of the recess 82 or longitudinal groove 84 is in each case between 10 ° to 45 °, but preferably approximately 20 °. If one of the securing bolts 80 catches in the recess 82 or longitudinal groove 84, the slide 16 can no longer be moved into the ignition position by falling, bumping or rotating. This ensures a high level of handling safety for the detonator. With a normal firing order, the "teeth" or bevels of the longitudinal groove 84, 82 and end edges 90 of the 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 be easily 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 cost-effective possibility of production and simplified laboratory work of the individual parts.
  • the fuse housing 10 is expediently provided on the lower outer circumference with a bevel 94 between 1 ° to 10 °, preferably approximately 5 °, for frictionally locking mutual fixing (clamp fit) with a cup-shaped cover plate 58 with a flange edge 96. This covering and fixing 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 also contains a pyrotechnic self-dismantling function that is activated after the bomblets are ejected from the main floor. This means that even with unfavorable surcharges - e.g. B. deep powder snow - high functional reliability or low dud rate.
  • the detonator has three separate mechanical safeguards which lock the slide 16 serving as a detonator carrier: the ignition needle 20 or ignition needle tip 28, which is immersed in 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 projects through the igniter housing 10, and two locking bolts 80, which each snap into the recess 82 or longitudinal groove 84 on the slide 16.
  • the securing bolts 80 are primarily intended as transport, handling and anti-lifting devices. 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 safety bolts 80 of the bomb detonators in the bomblet column arranged centrally in the carrier floor already unlock when fired, the bomblet columns arranged in the safety 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 or 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 igniter remains secured.
  • the detonator is only activated when the individual bomblets are so far apart after they have been 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 longitudinal 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 between the unexploded ordinance into tapping failures and those which are still in the secured position.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Automotive Seat Belt Assembly (AREA)
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
DE3925238 1989-07-29
DE3925238A DE3925238A1 (de) 1989-07-29 1989-07-29 Zuender fuer ein bombletgeschoss

Publications (3)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0411996B1 (fr) * 1989-08-01 1994-12-14 GIAT Industries Dispositif d'amorçage de chaîne pyrotechnique pour sous-munitions d'obus-cargo
US5670736A (en) * 1995-07-27 1997-09-23 Giat Industries Priming system for the explosive charge of a submunition on board a carrier
CN114777583A (zh) * 2022-04-12 2022-07-22 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

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Citations (6)

* 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
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
EP0158700A2 (fr) * 1983-09-15 1985-10-23 Rheinmetall GmbH Fusée pour projectile secondaire
DE3524080A1 (de) * 1985-07-05 1987-01-08 Rheinmetall Gmbh Zuender fuer einen gefechtskopf
EP0284923A2 (fr) * 1987-03-31 1988-10-05 TAAS Israel Industries, Limited Fusée pour une sous-munition

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3913483A (en) * 1972-08-11 1975-10-21 Us Army Grenade with fuze
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
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
DE3740966A1 (de) * 1987-12-03 1989-06-15 Diehl Gmbh & Co Pyrotechnischer zuender fuer geschosse, raketen, bomblets und minen

Patent Citations (6)

* 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
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
EP0158700A2 (fr) * 1983-09-15 1985-10-23 Rheinmetall GmbH Fusée pour projectile secondaire
DE3524080A1 (de) * 1985-07-05 1987-01-08 Rheinmetall Gmbh Zuender fuer einen gefechtskopf
EP0284923A2 (fr) * 1987-03-31 1988-10-05 TAAS Israel Industries, Limited Fusée pour une sous-munition

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0411996B1 (fr) * 1989-08-01 1994-12-14 GIAT Industries Dispositif d'amorçage de chaîne pyrotechnique pour sous-munitions d'obus-cargo
US5670736A (en) * 1995-07-27 1997-09-23 Giat Industries Priming system for the explosive charge of a submunition on board a carrier
CN114777583A (zh) * 2022-04-12 2022-07-22 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
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

Also Published As

Publication number Publication date
EP0411258A3 (en) 1993-03-03
DE59009612D1 (de) 1995-10-12
US5022325A (en) 1991-06-11
EP0411258B1 (fr) 1995-09-06
DE3925238A1 (de) 1991-01-31

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