EP0411245B1 - Bomblet fuze - Google Patents

Bomblet fuze Download PDF

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Publication number
EP0411245B1
EP0411245B1 EP90105408A EP90105408A EP0411245B1 EP 0411245 B1 EP0411245 B1 EP 0411245B1 EP 90105408 A EP90105408 A EP 90105408A EP 90105408 A EP90105408 A EP 90105408A EP 0411245 B1 EP0411245 B1 EP 0411245B1
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EP
European Patent Office
Prior art keywords
detonator
slide
bomblet
spin
projectile
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
EP90105408A
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German (de)
French (fr)
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EP0411245A2 (en
EP0411245A3 (en
Inventor
Wolfang Hoffmann
Gerhard Skowasch
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Rheinmetall Industrie AG
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Rheinmetall Industrie AG
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Publication of EP0411245A2 publication Critical patent/EP0411245A2/en
Publication of EP0411245A3 publication Critical patent/EP0411245A3/en
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Publication of EP0411245B1 publication Critical patent/EP0411245B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
    • F42B10/48—Range-reducing, destabilising or braking arrangements, e.g. impact-braking arrangements; Fall-retarding means, e.g. balloons, rockets for braking or fall-retarding
    • F42B10/54—Spin braking means
    • 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 of a bomblet projectile, with an axially displaceable ignition needle and a slide with detonator charge which can be displaced transversely to the longitudinal direction of the projectile or central axis, and with swirl brake vanes which are pivotably mounted on the outside of the detonator housing.
  • 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 km over a target area and there at an altitude of z. B. ejected 300 m and mechanically set when falling.
  • the bomb detonator has a firing pin with a screw mechanism, which is screwed in when secured and thereby engages in a recess in the detonator carrier and prevents it from moving sideways into the arming position.
  • the outer end piece of the screwed-in firing needle facing away from the detonator carrier is connected to a stabilizing loop which unfolds after the bomblet has been ejected from the basement and exerts a torque on the screwed-in firing needle due to the attacking air resistance.
  • the detonator carrier After unscrewing the ignition needle, the detonator carrier can move into its focus position by centrifugal force and the detonator is unlocked and focused.
  • the arrangement of the locking pin on the slide which is prevented or prevented from moving by a swung-out brake wing that is not folded out, provides an additional means of securing the bomb detonator, which is independent of the unlocking process of the ignition needle, using simple but effective means.
  • This is on the Arranged on the inside of the swirl brake wing is a retaining lug, which holds the slide in the securing position when the swirl brake wing is folded in. Only when the swirl brake wing has exceeded an opening angle of at least 15 °, the locking pin or the slide is released.
  • the swirl brake wing can only carry out this opening process when it is in turn released by the outer securing band; However, this can only take place after the ejection from the carrier floor, so that a further securing possibility of the slide is given regardless of the torque acting on the stabilizing band or the time period in which the firing needle is unscrewed.
  • the swirl brake blades do not have a fixed housing stop, but rather, depending on the rotation of the bomblet or the centrifugal force and the opposing inflow air, flexibly swivel up and brake the self-twist of the bomblet "gently" but effectively, the bomblet does not experience an oscillation due to a previous jerky opening the swirl brake wing; this reduces the number of bomblets that are so inclined or tilted during the service that the service function fails because the component of the service impulse acting in the direction of the firing pin axis is too small.
  • the position of the safety pin 62 outside the detonator housing means that the condition of the bomb detonator can be visually recognized and thus a safety assessment possible.
  • 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 retaining bolt 66 Surrounding the outside of the detonator housing 10 and the upper reduced-diameter area of the detonator housing 10 are each on a retaining bolt 66 two radially outwardly pivotable, semicircularly curved swirl brake vanes 32, z. B. made of thin sheet steel.
  • a securing band 34 is wound around the swirl brake vanes 32 folded in.
  • the securing strap 34 and the stabilizing loop 30 are held in their wound position by an overturned hood-like, two-part plastic securing shell 36, which in turn is held in position by a spring steel locking 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 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.
  • 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 be - if it is released for this by additional securing means acting separately - move it into its focusing position and is therefore in focus for a strike ignition.
  • FIG. 1 A locking pin 62 running parallel to the central axis A is arranged vertically on the slide 16.
  • an opening 64 is provided in the igniter housing 10, so that the securing pin 62 assumes a position inside the igniter housing 10 when the slide is in the locked position and an end position outside the igniter housing 10 after the slide 16 has been moved into focus.
  • the locking pin 62 is in the locked position of the slider 16 with an unfolded swirl brake wing 32 in operative connection, so that the slider 16 can be locked in its locked position.
  • the swirl brake wing 32 expediently has an inward-pointing projection 68 which, when the swirl brake wing 32 is not extended, is in contact with the locking pin 62 and overlaps or blocks it in a locking manner.
  • FIG. 3 shows a plan view of the igniter housing 10 with a broken line of the swirl brake vanes 32 that have been folded out, with the securing band, stabilizing loop and securing clip being omitted.
  • At least two swirl brake vanes 32 are pivoted on the right side on a bomblet projectile fired with a right-hand swirl or pivoted on the left side of a bomblet projectile fired with a left-hand swirl on the detonator housing 10 on retaining bolts 66 such that they are pivotable transversely to the longitudinal axis of the projectile or central axis A, and can be pivoted counter to the rotation-induced air flow direction 74 are.
  • the direction of rotation 72 of the bomblet projectile, the direction of air flow 74 and the opposite pivoting direction 76 of the swirl brake blades 32 are shown with arrows.
  • the projection 68 can expediently be formed on the inside of the swirl brake wing 32 as a bracket 70 fastened on both sides.
  • a z. B. environmental loosening of the locking band to ensure the locking of the slide is provided that the locking of the locking pin 62 and the slider 16 can only be canceled after pivoting of the swirl brake wing with projection 68 or 70 by an angle of at least 15 °.
  • the slide 16 can move into the focusing position by centrifugal force and / or spring force. Then the locking pin 62 is in the position shown in dashed lines outside the igniter housing 10.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)
  • Emergency Lowering Means (AREA)

Description

Die Erfindung betrifft einen Zünder eines Bombletgeschosses, mit axial verschiebbarer Zündnadel und quer zur Geschoßlängsrichtung bzw. Mittelachse verschiebbarem Schieber mit Detonatorladung, und mit außen am Zündergehäuse schwenkbar gelagerten Drallbremsflügeln.The invention relates to a detonator of a bomblet projectile, with an axially displaceable ignition needle and a slide with detonator charge which can be displaced transversely to the longitudinal direction of the projectile or central axis, and with swirl brake vanes which are pivotably mounted on the outside of the detonator housing.

Bombletgeschosse sind Submunitionsgeschosse bzw. Tochtergeschosse, die in großer Anzahl, z. B. 63 Stück, von einem großkalibrigen Trägergeschoß über Entfernungen von bis zu 30 km über ein Zielgebiet transportiert werden und dort in einer Höhe von z. B. 300 m ausgestoßen und beim Herabfallen mechanisch zündscharf gestellt werden.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 km over a target area and there at an altitude of z. B. ejected 300 m and mechanically set when falling.

Um eine hohe Durchschlagsleistung der Hohlladung des Bomblets zu gewährleisten, ist es erforderlich, die hohe Rotationsgeschwindigkeit des Bomblets nach Ausstoßen aus dem Trägergeschoß in kurzer Zeit definiert herunterzubremsen, ohne daß das Bomblet eine instabile Fluglage bekommt bzw. durchläuft.In order to ensure a high penetration rate of the shaped charge of the bomblet, it is necessary to slow down the high rotational speed of the bomblet after ejection from the carrier floor in a defined time without the bomblet getting an unstable attitude or going through.

Aus der DE-A-22 42 930 ist bereits ein stapelbares Bomblet bekannt, dessen Drallbremsflügel durch Fliehkraft quer zur Geschoßlängsachse aufklappen und durch die anströmende Luft gegen einen Gehäusevorsprung als festen Anschlag gedrückt werden. Nachteilig hierbei ist, daß der Bremseffekt bereits unmittelbar nach dem Ausstoß in voller Stärke einsetzt und durch das beim Ausschwenken ruckartige Anschlagen der Drallbremsflügel eine Pendelung des Bomblets ausgelöst bzw. verstärkt werden kann, die zu einem Versagen des Zünders beim Aufschlag führen kann.From DE-A-22 42 930 a stackable bomblet is already known, the swirl brake vanes of which open by means of centrifugal force transversely to the longitudinal axis of the floor and are pressed by the inflowing air against a housing projection as a fixed stop. The disadvantage here is that the braking effect begins at full strength immediately after the ejection and a swinging of the bomblet due to the jerky striking of the swirl brake wings can be triggered or amplified, which can lead to failure of the detonator on impact.

Die Scharfstellung dieses bekannten Bombletzünders erfolgt folgendermaßen. Der Bombletzünder weist eine Zündnadel mit Schraubmechanismus auf, die bei Sicherstellung eingeschraubt ist und dabei in eine Ausnehmung im Detonatorträger eingreift und diesen am Querverschieben in die Scharfstellungposition hindert. Das dem Detonatorträger abgewandte äußere Endstück der eingeschraubten Zündnadel ist mit eine Stabiliserungsschlaufe verbunden, die sich nach dem Ausstoßen des Bomblets aus dem Trägergeschoß entfaltet und durch den angreifenden Luftwiderstand ein Drehmoment auf die eingeschraubte Zündnadel ausübt. Nach dem Herausdrehen der Zündnadel kann sich der Detonatorträger durch Fliehkraftwirkung in seine Scharfstellungsposition verschieben und der Zünder ist entsichert und scharfgestellt. Es besteht nun die Möglichkeit, daß sich beim Aneinanderstossen von Bomblets mit herausgeschraubter Zündnadel bereits in der Luft Frühzündungen ergeben können.This known bomb detonator is focused as follows. The bomb detonator has a firing pin with a screw mechanism, which is screwed in when secured and thereby engages in a recess in the detonator carrier and prevents it from moving sideways into the arming position. The outer end piece of the screwed-in firing needle facing away from the detonator carrier is connected to a stabilizing loop which unfolds after the bomblet has been ejected from the basement and exerts a torque on the screwed-in firing needle due to the attacking air resistance. After unscrewing the ignition needle, the detonator carrier can move into its focus position by centrifugal force and the detonator is unlocked and focused. There is now the possibility that when bomblets collide with the firing pin unscrewed, pre-ignition can occur in the air.

Diese Nachteile können auch beim Einsatz eines aus der US-PS 4,662,278 bekannten Zünders entstehen, weil nach Lösen eines manuell betätigbaren Sicherungsstiftes der Detonatorträger sich ebenfalls unmittelbar nach Herausdrehen der Zündnadel aus einer Sicherstellung im Detonatorträger unter Fliehkrafteinwirkung in Scharfstellungsposition bewegen kann.These disadvantages can also arise when using a detonator known from US Pat. No. 4,662,278, because after loosening a manually operable securing pin, the detonator carrier can also move into the focusing position immediately after unscrewing the ignition needle from a safety device in the detonator carrier under the influence of centrifugal force.

Auch bei einem weiten aus der US-PS 3,855,933 bekannten Zünder wird die Funktionssicherheit nach dem Verlassen des Bomblets aus dem Trägergeschoß nicht erhöht, weil die Sicherstellung des Detonatorträgers unmittelbar nach Verlassen des Trägergeschosses durch einen nach hinten aufklappbaren Stabilisierungsflügel aufgehoben wird.Even with a wide detonator known from US Pat. No. 3,855,933, the functional reliability after leaving the bomblet from the carrier storey is not increased, because the securing of the detonator carrier is canceled immediately after leaving the carrier storey by means of a stabilizing wing that can be opened to the rear.

Es ist Aufgabe der vorliegenden Erfindung, für einen Bombletzünder eine Erhöhung der Funktionssicherheit mit Vorgabe gleicher Bedindungen für die Scharfstellung anzugeben, wobei ein weiteres Sicherungsmittel vorgesehen ist, das als störungsfreie Schrittfolge der nacheinander ablaufenden Entsicherungsfunktionen gewährleistet.It is an object of the present invention to provide an increase in the functional reliability for a bomb detonator, with the same conditions being set for the focusing, with a further securing means being provided which ensures the trouble-free sequence of steps of the successive unlocking functions.

Diese Aufgabe wird erfindungsgemäß mit den im Patentanspruch 1 im Kennzeichnungsteil angegebenen Merkmalen gelöst. Durch die Anordnung des Sicherungsstiftes auf dem Schieber, der durch einen nicht ausgeklappten Drallbremsflügel am Verschieben gehindert bzw. arretiert wird, ist mit einfachen aber wirksamen Mitteln eine zusätzliche, vom Entsicherungsvorgang der Zündnadel unabhängige Sicherungsmöglichkeit des Bombletzünders gegeben. Dazu ist auf der Innenseite des Drallbremsflügels eine Haltenase angeordnet, die im eingeklappten Zustand des Drallbremsflügels den Schieber in Sicherungsposition festhält. Erst wenn der Drallbremsflügel einen Öffnungswinkel von wenigstens 15° überschritten hat, wird der Sicherungsstift bzw. der Schieber freigegeben. Diesen Öffnungsvorgang kann der Drallbremsflügel jedoch erst ausführen, wenn er seinerseits von dem äußeren Sicherungsband freigegeben ist; dieses kann aber erst nach dem Ausstoß aus dem Trägergeschoß erfolgen, so daß unabhängig von dem auf das Stabilisierungsband wirkenden Drehmoment bzw. der Zeitdauer in welcher die Zündnadel herausgeschraubt wird, eine weitere Sicherungsmöglichkeit des Schiebers gegeben ist.This object is achieved with the features specified in claim 1 in the characterizing part. The arrangement of the locking pin on the slide, which is prevented or prevented from moving by a swung-out brake wing that is not folded out, provides an additional means of securing the bomb detonator, which is independent of the unlocking process of the ignition needle, using simple but effective means. This is on the Arranged on the inside of the swirl brake wing is a retaining lug, which holds the slide in the securing position when the swirl brake wing is folded in. Only when the swirl brake wing has exceeded an opening angle of at least 15 °, the locking pin or the slide is released. However, the swirl brake wing can only carry out this opening process when it is in turn released by the outer securing band; However, this can only take place after the ejection from the carrier floor, so that a further securing possibility of the slide is given regardless of the torque acting on the stabilizing band or the time period in which the firing needle is unscrewed.

Da die Drallbremsflügel keinen festen Gehäuseanschlag haben, sondern angepaßt in Abhängigkeit von der Rotation des Bomblets bzw. der Fliehkraft und der entgegenwirkenden Anströmluft nachgiebig aufschwenken und den Eigendrall des Bomblets "sanft" aber wirksam abbremsen, erfährt das Bomblet keine Pendelung durch ein bisher übliches ruckartiges Aufklappen der Drallbremsflügel; dadurch verringert sich die Zahl der Bomblets, die beim Aufschlag noch so stark angestellt bzw. schräggestellt sind, daß die Aufschlagfunktion versagt, weil die in Richtung Zündnadelachse wirkende Komponente des Aufschlagimpulses zu gering ist.Since the swirl brake blades do not have a fixed housing stop, but rather, depending on the rotation of the bomblet or the centrifugal force and the opposing inflow air, flexibly swivel up and brake the self-twist of the bomblet "gently" but effectively, the bomblet does not experience an oscillation due to a previous jerky opening the swirl brake wing; this reduces the number of bomblets that are so inclined or tilted during the service that the service function fails because the component of the service impulse acting in the direction of the firing pin axis is too small.

Sollte ein Bombletgeschoß zum Beispiel sehr weich landen wie z.B. in einem Schneehaufen und die Aufschlagszündung versagen oder einen Zündversager aufweisen und dadurch nicht detoniert sein, so ist durch die Position des Sicherungsstiftes 62 außerhalb des Zündergehäuses sehr vorteilhaft optisch der Zustand des Bombletzünders erkennbar und somit eine Sicherheitsbeurteilung möglich.If, for example, a bomblet projectile lands very softly, e.g. in a pile of snow and the impact ignition fails or has an ignition failure and is therefore not detonated, the position of the safety pin 62 outside the detonator housing means that the condition of the bomb detonator can be visually recognized and thus a safety assessment possible.

Die Erfindung wird nachfolgend anhand von eines in den Zeichnungen dargestellten Ausführungsbeispieles näher erläutert und beschrieben.The invention is explained and described in more detail below with reference to an embodiment shown in the drawings.

Es zeigen:

Figur 1
einen Längsschnitt durch ein Bomblet-Zündergehäuse gemäß der Erfindung,
Figur 2
einen Querschnitt durch das Zündergehäuse in Höhe der Drallbremsflügel mit teilweise freigeschnittenem Schieber gemäß Linie II-II in Figur 1 und
Figur 3
eine Draufsicht auf das Zündergehäuse mit Darstellung der Drallbremsflügel.
Show it:
Figure 1
2 shows a longitudinal section through a bomblet detonator housing according to the invention,
Figure 2
a cross section through the detonator housing at the level of the swirl brake wing with partially cut-off slide according to line II-II in Figure 1 and
Figure 3
a plan view of the detonator housing showing the swirl brake wing.

In Figur 1 ist mit der Bezugsziffer 10 ein Zündergehäuse bezeichnet, das mittels eines Halteringes 14 fest auf einem Bombletgehäuse 12 fixiert ist. Innerhalb des Zündergehäuses 10 ist ein quer zur Mittelachse A des Bombletgeschosses verschiebbarer Schieber 16 mit Detonatorladung 18 angeordnet.
Die Darstellung zeigt den Schieber 16 in Sicherungsposition, wobei die Detonatorladung 18 seitlich aus der geraden Linie zwischen einer Haupt-Zündnadel 20 und einer im oberen Bombletgehäuse 12 angeordneten Verstärkerladung 22 zur Zündung der Hauptsprengladung 24 heraus verschoben ist. Die zentral angeordnete Haupt-Zündnadel 20 ist über eine Schraubverbindung mit einer als zusätzliche Schlagmasse dienenden, im Zündergehäuse 10 axial verschiebbaren Hülse 26 verbunden. In dargestellter Sicherungsposition ist die Zündnadel 20 in die Hülse 26 eingeschraubt, so daß sich diese nach oben bzw. hinten gegen einen Gehäuseabsatz des Zündergehäuses 10 abstützt. Vorne ragt die Spitze 28 der Haupt-Zündnadel 20 in eine auf der Oberseite des Schiebers 16 angeordnete Ausnehmung (Sacklochbohrung) hinein und fixiert so den Schieber 16 in Sicherungsposition.In FIG. 1, the reference number 10 denotes an igniter housing, which is fixed on a bomblet housing 12 by means of a retaining ring 14. 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. In the safety position shown, 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. At the front, 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.

Auf dem aus dem Zündergehäuse 10 herausragenden Ende der Haupt-Zündnadel 20 ist eine zusammengefaltete Stabilisierungsschlaufe 30 befestigt. Außen auf dem Zündergehäuse 10 und den oberen durchmesserverkleinerten Bereich des Zündergehäuses 10 umschließend sind jeweils an einem Haltebolzen 66 zwei radial nach außen verschwenkbare, halbkreisförmig gebogene Drallbremsflügel 32, z. B. aus dünnem Stahlblech, befestigt. Um die eingeklappten Drallbremsflügel 32 herum ist ein Sicherungsband 34 gewickelt.
Das Sicherungsband 34 und die Stabilisierungsschlaufe 30 werden in ihrer aufgewickelten Lage von einer übergestülpten haubenartigen, zweigeteilten Kunststoff-Sicherungsschale 36 festgehalten, die wiederum selbst von einem Federstahl-Sicherungsring 38 in ihrer Position gehalten wird.A folded stabilizing loop 30 is attached to the end of the main firing needle 20 protruding from the igniter housing 10. Surrounding the outside of the detonator housing 10 and the upper reduced-diameter area of the detonator housing 10 are each on a retaining bolt 66 two radially outwardly pivotable, semicircularly curved swirl brake vanes 32, z. B. made of thin sheet steel. A securing band 34 is wound around the swirl brake vanes 32 folded in.
The securing strap 34 and the stabilizing loop 30 are held in their wound position by an overturned hood-like, two-part plastic securing shell 36, which in turn is held in position by a spring steel locking ring 38.

Bei ihrem Transport in ein Zielgebiet mittels eines auf große Entfernungen wie z. B. 30 km verschießbaren großkalibrigen Trägergeschosses sind die Tochtergeschosse (Bomblets) innerhalb des Trägergeschosses auf platzsparende Weise als Säulen ineinandergestapelt. In Figur 1 ist in gestrichelter Darstellung ein solches, das Zündergehäuse 10 völlig überdeckendes Nachbarbomblet 60 angedeutet. Dabei ragt das Zündergehäuse 10 weit in den kegelförmigen Freiraum der Hohlladungseinlage des benachbarten Bomblets 60 hinein.When transporting them to a target area by means of a long distance such. B. 30 km of large-caliber carrier floor, the daughter floors (bomblets) 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.

Bei Ausstoß der Bombletgeschosse aus dem Trägergeschoß mittels einer Ausstoßladung über einem Zielgebiet laufen nach Aufhebung der Stapelanordnung innerhalb eines vorbestimmbaren Zeitraumes mehrere Schritte zeitlich nacheinander von der Sicherungsposition des Bombletzünders bis zu seiner Scharfstellung ab:
Zunächst wird äußerlich die Stabilisierungsschlaufe 30 aus ihrer eingefalteten Ruheposition herausgezogen und entfaltet. Gleichzeitig lösen sich die beiden Sicherungsschalen 36 mit Sicherungsring 38 vom Zündergehäuse 10 ab und geben das Sicherungsband 34 frei. Danach wickelt sich das abwerfbare Sicherungsband 34 ab und gibt die Drallbremsflügel 32 frei, die aufgrund der rotationsbedingten Fliehkräfte ausschwenken und den Drall des nunmehr stabilisiert herabfallenden Bombletgeschosses vermindern.When the bomblet projectiles are ejected from the carrier storey by means of an ejection charge over a target area, after the stack arrangement has been lifted, several steps take place in succession within a predeterminable period of time from the safety position of the bomblet detonator to its focusing:
First of all, the stabilization loop 30 is pulled out of its folded-in rest position and unfolded. At the same time, the two securing shells 36 with securing ring 38 detach from the igniter housing 10 and release the securing tape 34. Then the detachable securing band 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.

Nachdem die Stabilisierungsschlaufe 30 entfaltet ist, wirkt ein Drehmoment auf die Zündnadel 20, die sich ein Stückchen nach hinten aus der Hülse 26 herausschraubt, dabei hebt sich die Spitze 28 der Zündnadel 20 aus der Ausnehmung im Schieber 16 heraus und der Schieber kann sich - sofern er dafür von separat wirkenden weiteren Sicherungsmitteln freigegeben ist - in seine Scharfstellungsposition verschieben und ist damit für eine Aufschlagszündung scharf gestellt.After the stabilizing loop 30 is unfolded, 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 be - if it is released for this by additional securing means acting separately - move it into its focusing position and is therefore in focus for a strike ignition.

In Figur 2 wird die Wirkungsweise der erfindungsgemäßen zweiten Sicherungseinrichtung deutlich. Auf dem Schieber 16 ist senkrecht ein parallel zur Mittelachse A verlaufender Sicherungsstift 62 angeordnet. Im Zündergehäuse 10 ist dazu korrespondierend eine Öffnung 64 vorgesehen, so daß der Sicherungsstift 62 bei Sicherungsstellung des Schiebers eine Position innerhalb des Zündergehäuses 10 und nach Verschiebung des Schiebers 16 in Scharfstellung eine Endposition außerhalb des Zündergehäuses 10 einnimmt. Dabei steht der Sicherungsstift 62 in Sicherungsstellung des Schiebers 16 mit einem nicht ausgeklappten Drallbemsflügel 32 in Wirkverbindung, so daß der Schieber 16 in seiner Sicherungsposition arretierbar ist.
Zweckmäßigerweise weist der Drallbremsflügel 32 einen nach innen weisenden Vorsprung 68 auf, der in nicht ausgeklapptem Zustand des Drallbremsflügels 32 in Kontakt mit dem Sicherungsstift 62 steht und diesen arretierend übergreift bzw. blockiert.The mode of operation of the second securing device according to the invention is clear in FIG. A locking pin 62 running parallel to the central axis A is arranged vertically on the slide 16. Correspondingly, an opening 64 is provided in the igniter housing 10, so that the securing pin 62 assumes a position inside the igniter housing 10 when the slide is in the locked position and an end position outside the igniter housing 10 after the slide 16 has been moved into focus. The locking pin 62 is in the locked position of the slider 16 with an unfolded swirl brake wing 32 in operative connection, so that the slider 16 can be locked in its locked position.
The swirl brake wing 32 expediently has an inward-pointing projection 68 which, when the swirl brake wing 32 is not extended, is in contact with the locking pin 62 and overlaps or blocks it in a locking manner.

In Figur 2 befindet sich der Schieber 16 also noch in Sicherungsposition und beide voneinander unabhängige Sicherungsmittel - die eingeschraubte Hauptzündnadel 20 und die Arretierung des Sicherungsstiftes 62 durch den Vorsprung 68 auf der Innenseite des noch eingeschwenkten Drallbremsflügels 32 - sind wirksam.In FIG. 2, the slide 16 is still in the securing position and both independent securing means - the screwed-in main firing needle 20 and the locking of the securing pin 62 by the projection 68 on the inside of the swirl brake wing 32 which is still swung in - are effective.

Figur 3 zeigt eine Draufsicht auf das Zündergehäuse 10 mit gestrichelter Darstellung der ausgeklappten Drallbremsflügel 32, wobei Sicherungsband, Stabilisierungsschlaufe und Sicherungsklammer weggelassen wurden.FIG. 3 shows a plan view of the igniter housing 10 with a broken line of the swirl brake vanes 32 that have been folded out, with the securing band, stabilizing loop and securing clip being omitted.

Erfindungsgemäß sind hierbei wenigstens zwei Drallbremsflügel 32 bei einem mit Rechtsdrall verschossenen Bombletgeschoß rechtsseitig oder bei einem mit Linksdrall verschossenen Bombletgeschoß linksseitig derart schwenkbar am Zündergehäuse 10 an Haltebolzen 66 gelagert, daß sie quer zur Geschoßlängsachse bzw. Mittelachse A, und zwar entgegen der rotationsbedingten Luftanströmrichtung 74 verschwenkbar sind. Dadurch wird eine kräftige aber ruckfreie sanfte Abbremsung der Eigenrotation des Bombletgeschosses bewirkt. In Figur 3 ist mit Pfeilen die Rotationsrichtung 72 des Bombletgeschosses, die Luftanströmrichtung 74 und die entgegengesetzte Aufschwenkrichtung 76 der Drallbremsflügel 32 dargestellt.According to the invention, at least two swirl brake vanes 32 are pivoted on the right side on a bomblet projectile fired with a right-hand swirl or pivoted on the left side of a bomblet projectile fired with a left-hand swirl on the detonator housing 10 on retaining bolts 66 such that they are pivotable transversely to the longitudinal axis of the projectile or central axis A, and can be pivoted counter to the rotation-induced air flow direction 74 are. This results in a powerful but smooth, smooth braking of the self-rotation of the bomblet floor. In Figure 3, the direction of rotation 72 of the bomblet projectile, the direction of air flow 74 and the opposite pivoting direction 76 of the swirl brake blades 32 are shown with arrows.

Aus Festigkeitsgründen kann zweckmäßigerweise der Vorsprung 68 auf der Innenseite des Drallbremsflügels 32 als beidseitig befestigter Bügel 70 ausgebildet sein. Um auch bei einer z. B. umweltbedingten Lockerung des Sicherungsbandes die Arretierung des Schiebers noch zu gewährleisten ist vorgesehen, daß die Arretierung des Sicherungsstiftes 62 bzw. des Schiebers 16 erst nach einem Verschwenken des Drallbremsflügels mit Vorsprung 68 bzw. 70 um einen Winkel von wenigstens 15° aufhebbar ist.For reasons of strength, the projection 68 can expediently be formed on the inside of the swirl brake wing 32 as a bracket 70 fastened on both sides. To also with a z. B. environmental loosening of the locking band to ensure the locking of the slide is provided that the locking of the locking pin 62 and the slider 16 can only be canceled after pivoting of the swirl brake wing with projection 68 or 70 by an angle of at least 15 °.

Sofern die Zündnadel 20 aus der Sacklochbohrung im Schieber 16 herausgedreht ist und der Sicherungsstift 62 von dem ausgeschwenkten Drallbremsflügel 32 freigegeben ist, kann sich der Schieber 16 durch Fliehkraft und/oder Federkraft in Scharfstellungsposition verschieben. Dann befindet sich der Sicherungsstift 62 in der gestrichelt dargestellten Position außerhalb des Zündergehäuses 10.If the firing needle 20 is unscrewed from the blind hole in the slide 16 and the locking pin 62 is released from the swung-out swirl brake wing 32, the slide 16 can move into the focusing position by centrifugal force and / or spring force. Then the locking pin 62 is in the position shown in dashed lines outside the igniter housing 10.

Claims (5)

  1. Detonator for a bomblet projectile, with an axially displaceable firing pin (20) and a slide (16) displaceable transversally to the length of the projectile or to the median axis (A) and having a detonator charge (18), and with spin braking vanes (32) pivotably mounted on the outside of the detonator housing (10), characterised by the fact that the slide (16) has a securing pin (62) positioned vertically and extending parallel to the longitudinal direction of the projectile or to the median axis (A) and that an aperture (64) corresponding thereto is provided in the detonator housing (10), and that the securing pin (62), when the slide (16) occupies the safe position, is operatively connected with a spin braking vane (32) embraced and secured by a securing band (34), and that the slide (16) can be locked in the safe position, and that the securing pin (62) after the slide (16) has been moved to the armed position, assumes a final position outside the detonator housing (10).
  2. Detonator in accordance with Claim 1, characterised by the fact that at least two spin braking vanes (32) are pivotably mounted on the right of the detonator housing (10) in the case of a bomblet projectile fired with clockwise spin or on the left in the case of a bomblet projectile fired with anti-clockwise spin, in such a way that they are pivotable transversally to the length of the projectile or to the median axis (A), in opposition to the air incident air flow (74) caused by the rotation.
  3. Detonator in accordance with Claim 1 or 2, characterised by the fact that the spin braking vane (32) has a projection (68,70) directed inwardly which, when the spin braking vane (32) is not opened out, is in contact with the securing pin (62) and which extends across the latter with a retaining effect or locks it in position.
  4. Detonator in accordance with any one of Claims 1 to 3, characterised by the fact that the projection (68) on the inside of at least one spin braking vane (32), is constructed as a bracket (70) secured on both sides.
  5. Detonator in accordance with any one of the preceding Claims 1 to 4, characterised by the fact that the locking of the securing pin (62) and thus of the slide (16) cannot be nullified until after the spin braking vane (32), with the projection (68,70), has been pivoted through an angle of at least 15°.
EP90105408A 1989-07-29 1990-03-22 Bomblet fuze Expired - Lifetime EP0411245B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3925236A DE3925236A1 (en) 1989-07-29 1989-07-29 IGNITION FOR A BOMBLET BULLET
DE3925236 1989-07-29

Publications (3)

Publication Number Publication Date
EP0411245A2 EP0411245A2 (en) 1991-02-06
EP0411245A3 EP0411245A3 (en) 1993-02-03
EP0411245B1 true EP0411245B1 (en) 1995-08-23

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ID=6386174

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Application Number Title Priority Date Filing Date
EP90105408A Expired - Lifetime EP0411245B1 (en) 1989-07-29 1990-03-22 Bomblet fuze

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US (1) US5046424A (en)
EP (1) EP0411245B1 (en)
DE (2) DE3925236A1 (en)

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US6336407B1 (en) * 2000-02-10 2002-01-08 The United States Of America As Represented By The Secretary Of The Army Pyrotechnic slide assembly
GB0111171D0 (en) * 2001-05-08 2001-06-27 Special Cartridge Company Ltd Projictile
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
US9593922B2 (en) * 2013-03-14 2017-03-14 Bae Systems Land & Armaments L.P. Fin deployment system
IL231186A (en) * 2014-02-26 2017-07-31 Israel Aerospace Ind Ltd Fin deployment system
CN105890472A (en) * 2014-11-24 2016-08-24 重庆长安工业(集团)有限责任公司 Fuze powder ring device for artificial hail preventing and precipitation increasing projectile

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US3855933A (en) * 1967-05-11 1974-12-24 Us Army Dual purpose grenade
US3913483A (en) * 1972-08-11 1975-10-21 Us Army Grenade with fuze
DE2242930C2 (en) * 1972-08-31 1987-01-02 Rheinmetall GmbH, 4000 Düsseldorf Hollow charge daughter floor
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
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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
US4662278A (en) * 1985-03-18 1987-05-05 Lillios William N Fuse assembly
IT1183906B (en) * 1985-06-28 1987-10-22 Borletti Spa SPOOL WITH SELF-DESTRUCTION FOR SUBMUNITION SUITABLE TO BE EXPELLED BY A CARRIER
ZA867954B (en) * 1985-12-18 1987-06-24 Israel State Cluster bomb grenade with means for spin rate attenuation
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DE3624713C2 (en) * 1986-07-22 1995-09-07 Diehl Gmbh & Co Impact detonator with self-dismantling device for a bomblet
DE3740966A1 (en) * 1987-12-03 1989-06-15 Diehl Gmbh & Co PYROTECHNICAL IGNITION FOR BULLETS, ROCKETS, BOMBLETS AND MINES

Also Published As

Publication number Publication date
EP0411245A2 (en) 1991-02-06
US5046424A (en) 1991-09-10
DE3925236A1 (en) 1991-01-31
EP0411245A3 (en) 1993-02-03
DE59009552D1 (en) 1995-09-28

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