EP0411243B1 - Allumeur pour sous-munition du type "bomblet" - Google Patents

Allumeur pour sous-munition du type "bomblet" Download PDF

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Publication number
EP0411243B1
EP0411243B1 EP90105124A EP90105124A EP0411243B1 EP 0411243 B1 EP0411243 B1 EP 0411243B1 EP 90105124 A EP90105124 A EP 90105124A EP 90105124 A EP90105124 A EP 90105124A EP 0411243 B1 EP0411243 B1 EP 0411243B1
Authority
EP
European Patent Office
Prior art keywords
slide
detonator
ignition
sheet
firing pin
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
EP90105124A
Other languages
German (de)
English (en)
Other versions
EP0411243A1 (fr
Inventor
Gerhard Skowasch
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 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 GmbH filed Critical Rheinmetall GmbH
Publication of EP0411243A1 publication Critical patent/EP0411243A1/fr
Application granted granted Critical
Publication of EP0411243B1 publication Critical patent/EP0411243B1/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
    • 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
    • F42C9/142—Double fuzes; Multiple fuzes combined time and percussion fuzes in which the timing is caused by combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C1/00—Impact fuzes, i.e. fuzes actuated only by ammunition impact
    • F42C1/02—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze
    • 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), according to the preamble of claim 1.
  • Such a bomblet detonator with an axially unscrewable main firing needle and transversely to the longitudinal direction of the projectile from a securing position into a focusable slide with detonator charge is such.
  • B. is known from EP-A-0 284 923.
  • 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 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 misfires easily occur in the detonator charge or the exposed ignition element of the delay charge for self-decomposition.
  • 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 impact piece When focusing by moving the slider out of the side of the detonator housing, the impact piece should go through Centrifugal force from the self-rotation of the bomblet take effect, and the massive firing pin is to 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 in rotation and thereby 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 well-known second firing pin with a solid conical shape more or less closes this opening during the ignition process, depending on how deep it penetrates.
  • the ignition needle should penetrate as deeply as possible, but then the tap opening is completely closed and the ignition can lead to extinction due to the poor possibility of the combustion gases being emitted.
  • a spring tongue is provided to secure the focus of the slider to be moved out of a securing position, which, however, permanently presses on the slider in the securing position.
  • the centrifugal force or the spring force is often not sufficient to overcome the frictional force between the spring tongue and the slide and to move the slide into focus and to apply the piercing energy that is still necessary.
  • a further igniter is known from EP-A-0 318 995, which, however, already differs from the generic igniter in that the second ignition needle for igniting an ignition element which in turn can be displaced in the slide is mounted laterally in the slide and not in the igniter housing.
  • This second firing needle is formed from a sheet metal flanged at the outer end of the slide. In order to avoid bending of the ignition needle bent out of the sheet when the ignition delay set is pierced, the sheet must be relatively thick, significantly thicker than 0.8 mm.
  • the necessary bending stiffness is achieved from a disk-like sheet metal with a thickness of at least 0.8 mm and a corresponding firing needle, but the length of the firing needle is impaired in its overall length. Furthermore, the penetration resistance of this firing needle into the ignition retardation set becomes larger, so that larger centrifugal forces are required for the safe insertion, which, however, are only available to a limited extent due to the narrow installation space. Correct ignition is therefore not possible with a firing needle that is at least 0.8 mm thick, largely due to the high friction, when penetrating into the ignition delay set.
  • an impact detonator for a swirl projectile is known, which, however, is completely different in structure and function from the generic detonator.
  • the ignition is only initiated immediately after a hard impact, with an ignition pin resting directly on the inside of a safety cage carrying a piercing needle.
  • the piercing needle can be part of the sheet-like securing basket, and in this case consists of a tip punched out of the sheet and bent over.
  • This tip is located centrally in a disk-like plate of the safety cage, which is held at the edges and arranged transversely to the firing pin, as a result of which the disadvantages mentioned for EP-A-0 318 995 can also occur here.
  • the large area of the plate carrying the ignition tip largely closes the opening of the ignition charge located in the firing pin, so that little space is available for exhaust gas, and in a further disadvantageous manner the ignition can go out again.
  • the rear support of the vertical part of the firing needle on the wall of the igniter housing ensures that the firing needle does not bend during the ignition process, so that it can penetrate deeply into the ignition delay set for safe initiation.
  • the second Zündandel is expediently an integrated component (connected in one piece) of a circular spring plate made of thin sheet metal, which has a strip-like spring tongue in the center, which engages in a recess arranged below the slide in the focus position of the slide and thus prevents the slide from rebounding and prevents it securely fixed in focus position.
  • the spring tongue is not loaded when the slide is secured, but is only depressed when the slide is displaced transversely and is therefore not subject to signs of fatigue during long storage.
  • 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 moved transversely to the central axis A of the bomblet floor.
  • the illustration shows the slide 16 in a secured 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 ignition needle 20 projects into a recess (blind hole) arranged on the upper side of the slide 16 and thus fixes the slide 16 in the securing position.
  • a folded stabilizing band 30 is attached to the end of the main firing needle 20 protruding from the igniter housing 10.
  • On the outside of the igniter housing 10 and surrounding the upper diameter-reduced area of the igniter housing 10 are two radially outwardly pivotable, semicircularly curved swirl brake vanes 32, e.g. B. made of thin sheet steel.
  • a wrapping band 34 is placed around the swirl brake vanes 32 that are folded in.
  • the winding tape 34 and the stabilizing tape 30 are held in their wound position by a hood-like, two-part plastic clip 36, which in turn is held in position by a spring steel retaining ring 38.
  • the daughter floors When they are transported to a target area by means of a large-caliber carrier floor that can be closed over long distances (e.g. 30 km), the daughter floors are stacked one inside the other in a space-saving manner as columns.
  • 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 stabilizing band 30 is pulled out of its folded rest position and unfolded.
  • the plastic clip 36 with the retaining ring 38 jumps off the igniter housing 10 and releases the winding tape 34.
  • the detachable winding tape 34 unwinds and releases the swirl brake blades 32, which swivel out due to the centrifugal forces caused by the rotation and reduce the swirl of the now stabilized falling bomblet projectile.
  • the center of gravity of the slide 16 is set so that it is arranged in the securing position (on the left in FIG. 1) next to the central axis A, as a result of which the centrifugal forces push the slide 16 (to the left) against the force of a compression spring 40 in the event of a high swirl.
  • the second ignition needle 42 arranged laterally within the detonator housing 10 for initiating an ignition element 44 of a pyrotechnic delay line 46 with a reinforcement set 48 and an explosive explosive charge 50 is designed in a sheet-metal strip-like manner with a pointed cone-shaped cut so that it can penetrate deeply into the ignition set 44 for safe initiation without flowing out to obstruct the resulting combustion gases.
  • the second firing needle 42 represents an integrated tongue-like bent sheet metal strip part of a flat spring plate disk 52, which is arranged in the direct vicinity of the slide 16 and covers the entire cross section of the igniter housing 10.
  • the tongue-like bent-up spring which is perpendicular to the spring plate disk 52 is supported Part of the second firing needle 42 on the back on the inner wall of the igniter housing 10.
  • the second firing needle 42 or the spring plate 52 expediently has a material thickness or plate thickness of 0.1 to 0.4 mm.
  • the second firing needle 42 is arranged asymmetrically with respect to the central axis B of the slide 16 in a direct line with the ignition element 44 of the pyrotechnic delay line 46, the end region of which is arranged directly next to the detonator charge 18 with a reinforcement set 48 and an explosive explosive charge 50.
  • the spring washer 52 has an integrated spring tongue 54, which is in a blocking operative connection with a corresponding recess 56 on the underside of the slide 16 in the arming position of the slide. If the slider 16 is moved into the focus position, it is locked by the spring tongue 54, which latches into the recess 56 on the underside of the slider 16.
  • the spring washer 52 is fixed to the igniter housing 10 by a thin-walled covering hood 58 that overlaps the igniter housing 10.
  • the covering hood 58 expediently has the same sheet thickness as the spring sheet metal disk 52.
  • the spring tongue 54 engages in the recess 56 and fixes the slide 16 in this position.
  • the detonator charge 18 is now arranged in a line exactly below the tip 28 of the main ignition needle 20, which in the normal case initiates the detonator charge 18 in the event of a hard target impact, which brings the booster charge 22 and thus the main explosive charge 24 to ignition and detonation.
  • the spring plate disk 52 and / or the thin cover hood 58 can have a central bore.
  • the delay set 46 burns after z. B. 20 seconds and ignites the reinforcement set 46, which develops a high combustion temperature, and the explosive powder containing explosive charge 50, which nevertheless activate the detonator charge 18 arranged next to it in a short way.
  • the inventive construction of the bomb detonator ensures a trouble-free ignition of the igniter element for subsequent self-destruction or detonation of the bomb in any case while reducing the height and weight of the detonator.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (2)

  1. Détonateur pour un projectile explosif, en particulier un projectile à sous-munitions (bomblet), avec un percuteur principal (20) déplaçable axialement et un coulisseau (16), déplaçable transversalement à la direction longitudinale du projectile ou de l'axe médian (A), avec charge de détonateur (18), un élément d'allumage (44), pouvant être allumé par un deuxième percuteur (42) placé latéralement dans le boîtier de détonateur (10), d'un parcours de temporisation (46) pyrotechnique, étant prévu dans le coulisseau (16) pour une autodestruction du projectile, caractérisé en ce que le deuxième percuteur (42) est une partie de bande de tôle repliée vers le haut en forme de languette et ne gênant pas l'évacuation des gaz de combustion, d'un disque en tôle formant ressort 52, mince et plat, placé à proximité immédiate du coulisseau (16), recouvrant toute la section transversale du boîtier de détonateur (10), et la partie, repliée vers le haut en forme de languette, perpendiculaire au disque en tôle formant ressort 52, du deuxième percuteur 42 prenant appui sur la face arrière de la paroi intérieure du boîtier de détonateur 10 et en ce que le disque en tôle formant ressort (52) comporte une languette-ressort (54) intégrée, qui est en liaison active de blocage avec un évidement (56) correspondant, pratiqué sur la face inférieure du coulisseau (16), en position armée du coulisseau (16).
  2. Détonateur selon la revendication 1, caractérisé en ce que le deuxième percuteur (42) ou le disque en tôle formant ressort (52) présente une épaisseur de matière ou une épaisseur de tôle comprise entre 0,1 et 0,4 mm.
EP90105124A 1989-07-29 1990-03-19 Allumeur pour sous-munition du type "bomblet" Expired - Lifetime EP0411243B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3925235 1989-07-29
DE3925235A DE3925235A1 (de) 1989-07-29 1989-07-29 Bombletzuender

Publications (2)

Publication Number Publication Date
EP0411243A1 EP0411243A1 (fr) 1991-02-06
EP0411243B1 true EP0411243B1 (fr) 1993-11-18

Family

ID=6386173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105124A Expired - Lifetime EP0411243B1 (fr) 1989-07-29 1990-03-19 Allumeur pour sous-munition du type "bomblet"

Country Status (3)

Country Link
US (1) US5048419A (fr)
EP (1) EP0411243B1 (fr)
DE (2) DE3925235A1 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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.
DE4335022C2 (de) * 1993-10-14 1998-06-10 Rheinmetall Ind Ag Zünd- und Sicherungseinrichtung mit Selbstzerlegungseinrichtung für ein mit einer Hohlladungseinlage versehenes Granatengeschoß
DE9419261U1 (de) * 1994-12-01 1996-04-04 Gebrüder Junghans GmbH, 78713 Schramberg Aufschlagzünder für Munition
SE504857C2 (sv) * 1995-04-27 1997-05-12 Bofors Ab Sätt vid substridsdel samt substridsdel
ATA76595A (de) * 1995-05-05 1998-01-15 Winter Udo Mag Ing Sicherheitseinrichtung für einen aufschlagzünder
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
US5932834A (en) * 1997-04-24 1999-08-03 The United States Of America As Represented By The Secretary Of The Army Auto-destruct fuze
DE19726951C2 (de) * 1997-06-25 1999-12-16 Rheinmetall W & M Gmbh Zünder für ein Drallgeschoß mit im Verriegelungsbolzen für den Detonatorträger angeordneter Selbstzerlegereinheit
DE19842541C2 (de) * 1998-09-17 2003-10-16 Rheinmetall W & M Gmbh Stabilisierungsbandbefestigung bei einer Abwurfmunition
DE19916775C2 (de) * 1999-04-15 2002-12-05 Rheinmetall W & M Gmbh Submunitionsgeschoß
DE19917121C2 (de) 1999-04-15 2002-03-21 Rheinmetall W & M Gmbh Submunitionsgeschoss mit einem durch die Anströmkräfte der Luft aus der Sicherungsposition freigebbaren Schieber
FR2799830B1 (fr) * 1999-10-18 2002-08-30 Giat Ind Sa Dispositif et procede de fixation d'un systeme d'amorcage sur un corps d'une grenade
FR2801099B1 (fr) * 1999-11-17 2002-10-11 Giat Ind Sa Systeme d'amorcage de la charge explosive d'une sous- munition
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
US6705231B1 (en) * 2000-12-04 2004-03-16 The United States Of America As Represented By The Secretary Of The Army Safing and arming device for artillery submunitions
US6874425B1 (en) * 2001-05-18 2005-04-05 Day & Zimmermann, Inc. Projectile carrying sub-munitions
US6968785B2 (en) * 2003-09-22 2005-11-29 The United States Of America As Represented By The Secretary Of The Army Locking and stabilizing device for grenades
BE1016094A3 (fr) 2004-05-14 2006-03-07 Zeebrugge Forges Sa Dispositif d'autodestruction pour fusee de sous-munition.
US20100175261A1 (en) * 2008-07-22 2010-07-15 L.I.F.E. Support Technologies, Llc Safety razor
CN113935074B (zh) * 2021-09-17 2023-01-31 北京理工大学 一种用于存储器瞬态自毁系统的安全控制芯片

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DE265386C (fr) *
FR626555A (fr) * 1926-04-26 1927-09-14 Fusée extra-sensible pour projectiles de tous calibres
US3724384A (en) * 1965-09-27 1973-04-03 Us Navy Centrifugally armed fuze
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
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
IT1183905B (it) * 1985-06-28 1987-10-22 Borletti Spa Spoletta per submunizione atta ad essere espulsa da un vettore
IT1183906B (it) * 1985-06-28 1987-10-22 Borletti Spa Spoletta con autodistruzione per submunizione atta ad essere espulsa da un vettore
DE3524080C2 (de) * 1985-07-05 1996-07-18 Rheinmetall Ind Gmbh Zünder für einen Gefechtskopf mit einem durch Formschluß gesicherten Schlagstück
DE3624713C2 (de) * 1986-07-22 1995-09-07 Diehl Gmbh & Co Aufschlagzünder mit Selbstzerlegeeinrichtung für einen Bomblet
DE3641423A1 (de) * 1986-12-04 1988-06-09 Huels Troisdorf Aufschlagzuender fuer drallgeschosse
IL82066A (en) * 1987-03-31 1992-03-29 Israel State Fuse for sub-munition warhead
US4770096A (en) * 1987-08-17 1988-09-13 Honeywell Inc. Safing and arming mechanism
DE3740966A1 (de) * 1987-12-03 1989-06-15 Diehl Gmbh & Co Pyrotechnischer zuender fuer geschosse, raketen, bomblets und minen
DE3740967A1 (de) * 1987-12-03 1989-06-15 Diehl Gmbh & Co Pyrotechnischer zuender fuer geschosse

Also Published As

Publication number Publication date
DE59003515D1 (de) 1993-12-23
US5048419A (en) 1991-09-17
EP0411243A1 (fr) 1991-02-06
DE3925235A1 (de) 1991-01-31

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