EP3317607B1 - Fin-stabilized sub-calibre projectile which can be fired from a rifled barrel and method for the production thereof - Google Patents

Fin-stabilized sub-calibre projectile which can be fired from a rifled barrel and method for the production thereof Download PDF

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Publication number
EP3317607B1
EP3317607B1 EP16732660.2A EP16732660A EP3317607B1 EP 3317607 B1 EP3317607 B1 EP 3317607B1 EP 16732660 A EP16732660 A EP 16732660A EP 3317607 B1 EP3317607 B1 EP 3317607B1
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EP
European Patent Office
Prior art keywords
sabot
penetrator
fin
guide flange
main body
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EP16732660.2A
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German (de)
French (fr)
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EP3317607A1 (en
Inventor
Ruedi BUCHER
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RWM Schweiz AG
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RWM Schweiz AG
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • F42B14/061—Sabots for long rod fin stabilised kinetic energy projectiles, i.e. multisegment sabots attached midway on the projectile
    • F42B14/062—Sabots for long rod fin stabilised kinetic energy projectiles, i.e. multisegment sabots attached midway on the projectile characterised by contact surfaces between projectile and sabot
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/02—Driving bands; Rotating bands
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • F42B14/061—Sabots for long rod fin stabilised kinetic energy projectiles, i.e. multisegment sabots attached midway on the projectile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • F42B14/064—Sabots enclosing the rear end of a kinetic energy projectile, i.e. having a closed disk shaped obturator base and petals extending forward from said base
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • F42B14/067—Sealing aspects in sabots, e.g. sealing between individual segments of the sabots or sealing between the outer surface of the sabot and the inner surface of the barrel

Definitions

  • the sabot 4 comprises a base body 5 made of an aluminum alloy, which is connected to the penetrator 3 via a threaded connection 6. This threaded connection 6 ensures that the thrust and swirl forces acting on the sabot 4 when the projectile 1 is fired within a weapon barrel are transmitted to the penetrator 3 without slippage.
  • the base body 5 has a plurality of axially extending longitudinal grooves 12 which are distributed uniformly over the circumference and which in this embodiment laterally delimit four sabot segments 13-16 of the sabot 4 connected to one another on the circumference.
  • the base body 5 contains four bores 17 which are axially guided through the front guide flange 7 and extend as far as the rear guide flange 8 along the longitudinal grooves 12 chosen such that the area 18 formed between the penetrator 3 and the respective bore 17, in which the base body 5 has its smallest wall thickness, can act as a predetermined breaking point, along which the sabot segments 13-16 separate from one another after leaving the weapon barrel.
  • predetermined breaking points are known from practice.
  • a preferred method for producing the projectile disclosed above is described below: Starting from a blank that already has the outer contour of the base body 5 and the central bore 20 for the penetrator 3 and the thread for the positive connection of the penetrator 3 and sabot 4, if desired, from the front of the front guide flange 7, in the axial direction to the rear guide flange 8, the four bores 17 are introduced to reduce weight. To prevent slippage during the swirl transmission between the guide belt 10 and the sabot 8, the base of the recess 10 of the guide belt is preferably provided with a rim on the entire circumference. To protect against sinking in the sabot is coated in the Switzerland field professional in the weapon barrel by means of an anodic oxidation process. This coating is mainly important on the two guide flanges 7 and 8 and is characterized by its hardness and abrasion resistance.
  • the sealing and guide band 11 and at the same time the rear seal 19 are then introduced into the recess 10 of the rear guide flange 8 by means of a plastic injection molding process. This is made possible because the guide band area 10 is connected to the area of the rear seal 19 by means of longitudinal slots 21.
  • the wing control unit 2 is then screwed onto the penetrator as a complete unit.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Description

Die Erfindung betrifft ein aus einem gezogenen Waffenrohr verschießbares, flügelstabilisiertes Unterkalibergeschoss mit einem ein Flügelleitwerk tragenden Penetrator und einem auf dem Penetrator angeordneten, abwerfbaren Treibspiegel, der aus mehreren, umfangseitig miteinander verbundenen Treibspiegelsegmenten besteht, die durch die beim Verschießen auf das Geschoss wirkenden Zentrifugalkräfte nach Verlassen des Waffenrohres voneinander getrennt werden. Die Erfindung bezieht sich ferner auf ein Verfahren zur Herstellung eines derartigen Unterkalibergeschosses.The invention relates to a wing-stabilized lower-caliber projectile which can be closed from a drawn weapon barrel and which has a penetrator carrying a wing guide and a detachable sabot arranged on the penetrator, said sabot consisting of a plurality of sabot segments connected to one another on the circumference, which result from the centrifugal forces acting on the projectile after being fired of the gun barrel are separated from each other. The invention further relates to a method for producing such a sub-caliber projectile.

Derartige Geschosse sind beispielsweise aus der EP 0 300 373 B1 bekannt. Sie werden häufig aus automatischen Waffen im Mittelkaliberbereich (20-50 mm) verschossen. Der abwerfbare Treibspiegel besteht dabei im Wesentlichen aus einem zylinderförmigen Grundkörper aus Kunststoff mit Sollbruchstellen, der sich entlang seiner gesamten Länge umfangseitig an der Innenwand des entsprechenden Waffenrohres abstützt, und einem heckseitig mit dem Grundkörper verbundenen Metalleinsatz. Dieser Metalleinsatz ist mit einem Mitnahmegewinde versehen, welches in ein entsprechendes Gewinde des Penetrators zur Übertragung der beim Abschuss des Geschosses auf den Treibspiegel wirkenden Schub- und Drallkräfte auf den Penetrator dient. Der jeweilige Grundkörper besitzt ein Führungsband, welches den vollen Drall entsprechend der Steigung der Drallnuten des entsprechenden Waffenrohres und der Mündungsgeschwindigkeit des Geschosses auf den Treibspiegel und über das Mitnahmegewinde auf den Penetrator überträgt.Such projectiles are for example from the EP 0 300 373 B1 known. They are often fired from automatic weapons in the medium-caliber range (20-50 mm). The droppable sabot consists essentially of a cylindrical base made of plastic with predetermined breaking points, which is supported along its entire length on the circumferential side against the inner wall of the corresponding weapon barrel, and a metal insert connected to the rear of the base. This metal insert is provided with a driving thread which is used in a corresponding thread of the penetrator to transmit the thrust and swirl forces acting on the sabot when the projectile is fired onto the penetrator. The respective base body has a guide belt which transmits the full swirl according to the pitch of the swirl grooves of the corresponding weapon barrel and the muzzle velocity of the projectile to the sabot and via the driving thread to the penetrator.

Nachteilig bei derartigen bekannten Geschossen ist allerdings, dass durch die dickwandige Auslegung des Grundkörpers, der üblicherweise im Spritzgussverfahren hergestellt wird, sich Probleme bei dessen Herstellung ergeben. So sind aufgrund der relativ langen Abkühlzeiten lange Zykluszeiten bei der Herstellung der Treibspiegel erforderlich. Außerdem treten aufgrund der großen Wandstärke des Grundkörpers immer wieder Fehlstellen, beispielsweise Lunker, in dem Kunststoffmaterial auf, was dann zu Abgangsfehlern des Penetrators nach Verlassen des Waffenrohres führen kann. Je größer das Kaliber der Geschosse ist, desto dickwandiger sind die Grundkörper der Treibspiegel und desto ausgeprägter treten die vorher beschriebenen Probleme auf.A disadvantage of such known projectiles, however, is that the thick-walled design of the base body, which is usually produced by injection molding, gives rise to problems in its manufacture. So are due to the relatively long cooling times long cycle times required for the production of the sabot. In addition, due to the large wall thickness of the base body, defects, for example voids, occur repeatedly in the plastic material, which can then lead to outgoing errors in the penetrator after leaving the weapon barrel. The larger the caliber of the bullets, the thicker the base of the sabot and the more pronounced the problems described above occur.

Die DE 30 50 474 C1 offenbart einen Treibkäfig für ein unterkalibriges flügelstabilisiertes Geschoss, mit einem zum Vorsegmentieren spanabhebend geschlitzten einstückigen Körper, wobei jeder Schlitz im rückseitigen Teil des Körpers in der Nachbarschaft mit einer Gasdruckaufnahmefläche einen ungeschlitzten Bereich als eine Sollbruchstelle bildende Werkstoffbrücke aufweist.The DE 30 50 474 C1 discloses a sabot for a sub-caliber wing-stabilized projectile, with a one-piece body that is machined to be pre-segmented, each slot in the rear part of the body in the vicinity with a gas pressure-receiving surface having an unslit area as a predetermined breaking point material bridge.

Aus der DE-OS 2039719 ist ebenfalls ein aus einem gezogenen Waffenrohr verschießbares, flügelstabilisiertes Unterkalibergeschoss bekannt, bei dem der Treibspiegel aus mehreren Treibspiegelsegmenten aus einem Leichtmetall oder aus Kunststoff zusammengesetzt ist, die mittels entsprechender Führungsbänder zusammengehalten werden.From the DE-OS 2039719 is also known from a drawn gun barrel, wing-stabilized lower-caliber floor, in which the sabot is composed of several sabot segments made of a light metal or plastic, which are held together by means of appropriate guide bands.

Aus Gründen der Gewichtsersparnis umfasst der Treibspiegel dieser Geschosse einen Grundkörper, der einen sich an der Innenwand des Waffenrohres abstützbaren vorderen Führungsflansch und einen in einem axialen Abstand angeordneten hinteren Führungsflansch aufweist. Der zwischen den beiden Führungsflanschen befindliche Verbindungsabschnitt des Treibspiegels besitzt einen gegenüber den Führungsflanschen geringeren Außendurchmesser.For reasons of weight saving, the sabot of these projectiles comprises a base body which has a front guide flange which can be supported on the inner wall of the weapon barrel and a rear guide flange which is arranged at an axial distance. The connecting section of the sabot between the two guide flanges has a smaller outer diameter than the guide flanges.

Zur Kraftübertragung der auf den Treibspiegel beim Abschuss des Geschosses wirkenden Gasdruckkräfte auf den Penetrator befindet sich im Bereich des hinteren Führungsteiles des Grundkörpers eine im Penetrator eingelassene Ringnut, in welche ein mehrteiliges, der Nutenform des Penetrators angepasstes Mitnahmeglied des Treibspiegels eingreift. Sowohl die Führungsbänder als auch das Mitnahmeglied sind derart ausgebildet, dass beim Abschuss des Geschosses aufgrund eines Schlupfes zwischen den Führungsbändern und dem Treibspiegel nicht der ganze Drall von den beiden Führungsbändern auf den Treibspiegel übertragen wird und dass Dank eines Schlupfes zwischen Treibspiegel und Penetrator auch nicht der ganze Drall des Treibspiegels von diesem auf den Penetrator übertragen wird.To transmit the gas pressure forces acting on the sabot when the projectile is fired to the penetrator, there is an annular groove embedded in the penetrator in the area of the rear guide part of the base body, in which engages a multi-part driving element of the sabot adapted to the groove shape of the penetrator. Both the guide bands and the driving link are designed in such a way that when the projectile is shot down, due to a slippage between the guide bands and the sabot, not all of the swirl is transferred from the two guide bands to the sabot, and thanks to a slippage between the sabot and penetrator, neither Whole swirl of the sabot is transmitted from this to the penetrator.

Ein Nachteil bei derartigen Geschossen besteht darin, dass die Treibspiegel und damit auch die Penetratoren beim Verlassen des Waffenrohres beachtliche Unterschiede hinsichtlich ihrer Dralldrehzahl aufweisen. Je kleiner aber die Zentrifugalkräfte sind, die beim Austritt des Geschosses aus dem Waffenrohr auf den Treibspiegel wirken, umso kleiner ist die Geschwindigkeit und die Symmetrie beim Abwerfen der Treibspiegelsegmente, was ebenfalls zu Abgangsfehlern der Penetratoren und damit zu einer Vergrößerung der Geschossstreuung im Zielgebiet führen kann.A disadvantage of such projectiles is that the sabot and thus also the penetrators have considerable differences in their swirl speed when they leave the gun barrel. However, the smaller the centrifugal forces that act on the sabot when the projectile emerges from the weapon barrel, the smaller the speed and symmetry when dropping the sabot segments, which can also lead to departure errors of the penetrators and thus to an increase in the floor spread in the target area.

Ausgehend von der EP 0 300 373 B1 liegt der Erfindung die Aufgabe zugrunde, ein aus einem gezogenen Waffenrohr verschießbares, flügelstabilisiertes Unterkalibergeschoss zu offenbaren, dessen Treibspiegel leicht und stabil ist und dessen Penetratoren nach Verlassen des Waffenrohres geringere Abgangsfehler aufweisen als dieses bei vergleichbaren bekannten Unterkalibergeschossen der Fall ist. Ferner soll ein Verfahren zur Herstellung eines derartigen Geschosses offenbart werden
Diese Aufgabe wird erfindungsgemäß hinsichtlich des Geschosses durch die Merkmale des Anspruchs 1 und hinsichtlich des Verfahrens durch die Merkmale des Anspruchs 7 gelöst. Weitere, besonders vorteilhafte Ausgestaltungen der Erfindung offenbaren die Unteransprüche.Starting from the EP 0 300 373 B1 The invention has for its object to disclose a wing-stabilized sub-caliber projectile that can be closed from a drawn weapon barrel, the sabot is light and stable and the penetrators after leaving the weapon barrel have fewer exit errors than is the case with comparable known sub-caliber projectiles. A method for producing such a projectile is also to be disclosed
This object is achieved according to the invention with respect to the projectile by the features of claim 1 and with respect to the method by the features of claim 7. Further, particularly advantageous embodiments of the invention are disclosed in the subclaims.

Die Erfindung beruht im Wesentlichen auf dem Gedanken, auf dem Penetrator des Unterkalibergeschosses einen den Volldrall übertragenden Treibspiegel anzuordnen, dessen Grundkörper aus einer Leichtmetalllegierung besteht und aus Gründen der Gewichtsersparnis einen sich an der Innenwand des Waffenrohres abstützbaren vorderen Führungsflansch und einen in einem axialen Abstand angeordneten hinteren Führungsflansch aufweist, wobei der zwischen den beiden Führungsflanschen befindliche Verbindungsabschnitt des Treibspiegels einen gegenüber den Führungsflanschen geringeren Außendurchmesser besitzt. Zusätzlich zu dieser Zweiflanschkontur enthält der Grundkörper aus Gründen einer weiteren Gewichtsersparnis axiale Bohrungen, die durch den vorderen Führungsflansch hindurchgeführt sind und sich bis zu dem hinteren Führungsflansch erstrecken.The invention is essentially based on the idea of arranging on the penetrator of the lower-caliber floor a sabot which transmits the full swirl, the main body of which consists of a light metal alloy and, for reasons of weight saving, a front guide flange which can be supported on the inner wall of the weapon barrel and a rear one which is arranged at an axial distance Guide flange, wherein the connecting portion of the sabot between the two guide flanges has a smaller outer diameter than the guide flanges. In addition to this two-flange contour, the base body contains, for reasons of further weight saving, axial bores which are passed through the front guide flange and extend to the rear guide flange.

Als vorteilhaft hat es sich erwiesen, wenn der Durchmesser der axialen Bohrungen derart gewählt ist, dass der Bereich zwischen dem Penetrator und der jeweiligen Bohrung, in dem der Grundkörper seine geringste Wandstärke aufweist, als Sollbruchstelle wirkt, entlang der sich die Treibspiegelsegmente aufgrund der auf sie wirkenden Zentrifugalkräfte nach Verlassen des Waffenrohres voneinander trennen.It has proven to be advantageous if the diameter of the axial bores is selected such that the area between the penetrator and the respective bore, in which the base body has its smallest wall thickness, acts as a predetermined breaking point, along which the sabot segments are due to them separate acting centrifugal forces after leaving the gun barrel.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den folgenden, anhand von Figuren erläuterten Ausführungsbeispielen. Es zeigen:

  • Fig. 1 die perspektivische Ansicht eines erfindungsgemäßen Unterkalibergeschosses ;
  • Fig. 2 einen Längsschnitt durch das in Fig. 1 dargestellte Geschoss und
  • Fig. 3 eine vergrößerte Frontansicht auf das in Fig. 1 dargestellte Geschoss.
Further details and advantages of the invention will become apparent from the following exemplary embodiments explained by figures. Show it:
  • Fig. 1 the perspective view of a sub-caliber floor according to the invention;
  • Fig. 2 a longitudinal section through the in Fig. 1 floor shown and
  • Fig. 3 an enlarged front view of the in Fig. 1 floor shown.

In den Fig. 1 und 2 ist mit 1 ein erfindungsgemäßes flügelstabilisiertes Unterkalibergeschoss bezeichnet, welches einen mit einem Flügelleitwerk 2 verbundenen Penetrator 3 und einen auf dem Penetrator 3 angeordneten abwerfbaren Treibspiegel 4 umfasst.In the Fig. 1 and 2 1 designates a wing-stabilized lower-caliber floor according to the invention, which comprises a penetrator 3 connected to a wing tail unit 2 and a detachable sabot 4 arranged on the penetrator 3.

Der Treibspiegel 4 umfasst einen Grundkörper 5 aus einer Aluminiumlegierung, der über eine Gewindeverbindung 6 mit dem Penetrator 3 verbunden ist. Durch diese Gewindeverbindung 6 wird erreicht, dass die beim Abschuss des Geschosses 1 innerhalb eines Waffenrohres auf den Treibspiegel 4 wirkenden Schub- und Drallkräfte ohne Schlupf auf den Penetrator 3 übertragen werden.The sabot 4 comprises a base body 5 made of an aluminum alloy, which is connected to the penetrator 3 via a threaded connection 6. This threaded connection 6 ensures that the thrust and swirl forces acting on the sabot 4 when the projectile 1 is fired within a weapon barrel are transmitted to the penetrator 3 without slippage.

Der Grundkörper 5 besitzt einen vorderen Führungsflansch 7 und einen in einem axialen Abstand angeordneten hinteren Führungsflansch 8. Beide Führungsflansche 7, 8 dienen im geladenen Zustand des Geschosses 1 der Abstützung des Treibspiegels 4 an der Innenwand des entsprechenden Waffenrohres. Die beiden Führungsflansche 7, 8 des Treibspiegels 4 sind über einen Verbindungsabschnitt 9 miteinander verbunden, der aufgrund von Gewichtsersparnissen einen gegenüber den Führungsflanschen 7, 8 geringeren Außendurchmesser besitzt.The base body 5 has a front guide flange 7 and a rear guide flange 8 arranged at an axial distance. Both guide flanges 7, 8 serve in the loaded state of the projectile 1 to support the sabot 4 on the inner wall of the corresponding weapon barrel. The two guide flanges 7, 8 of the sabot 4 are connected to one another via a connecting section 9 which, due to weight savings, has an outer diameter that is smaller than that of the guide flanges 7, 8.

Auf dem äußeren Umfang des hinteren Führungsflansches 8 befindet sich innerhalb einer umlaufenden Ausnehmung 10 des Grundkörpers 5 ein Dichtungs- und Führungsband 11 aus Kunststoff.On the outer circumference of the rear guide flange 8 there is a sealing and guide band 11 made of plastic within a circumferential recess 10 of the base body 5.

Außerdem weist der Grundkörper 5 mehrere, gleichmäßig über den Umfang verteilt angeordnete, sich axial erstreckende Längsnuten 12 auf, welche in dieser Ausführungsform vier, umfangseitig miteinander verbundene Treibspiegelsegmente 13-16 des Treibspiegels 4 seitlich begrenzen.In addition, the base body 5 has a plurality of axially extending longitudinal grooves 12 which are distributed uniformly over the circumference and which in this embodiment laterally delimit four sabot segments 13-16 of the sabot 4 connected to one another on the circumference.

Zur weiteren Gewichtsersparnis des Treibspiegels 4 enthält der Grundkörper 5 vier axial durch den vorderen Führungsflansch 7 hindurchgeführte und sich bis zu dem hinteren Führungsflansch 8 entlang der Längsnuten 12 erstreckende Bohrungen 17. Diese dienen zudem zur Schaffung einer Solbruchstelle 18. Der Durchmesser der Bohrungen 17 wird dazu derart gewählt, dass der entstehende Bereich 18 zwischen dem Penetrator 3 und der jeweiligen Bohrung 17, in dem der Grundkörper 5 seine geringste Wandstärke aufweist, als Sollbruchstelle wirken kann, entlang der sich die Treibspiegelsegmente 13-16 nach Verlassen des Waffenrohres voneinander trennen. Alternative Einbindungen von Sollbruchstellen sind aus der Praxis bekannt.To further reduce the weight of the sabot 4, the base body 5 contains four bores 17 which are axially guided through the front guide flange 7 and extend as far as the rear guide flange 8 along the longitudinal grooves 12 chosen such that the area 18 formed between the penetrator 3 and the respective bore 17, in which the base body 5 has its smallest wall thickness, can act as a predetermined breaking point, along which the sabot segments 13-16 separate from one another after leaving the weapon barrel. Alternative integrations of predetermined breaking points are known from practice.

Heckseitig ist der Grundkörper 5 mittels einer aus Kunststoff bestehenden Heckabdichtung 19 versehen, um zu vermeiden, dass Treibladungsgase in die den Penetrator 3 aufnehmende zentrale Bohrung 20 oder in die Längsnuten 12 gelangen können.The base body 5 is provided on the rear side by means of a rear seal 19 made of plastic, in order to prevent propellant gas from entering the central bore 20 receiving the penetrator 3 or the longitudinal grooves 12.

Beim Abschuss des Geschosses 1 wird das Dicht- und Führungsband 11 durch die Kraft der Treibladungsgase in die Züge des entsprechenden Waffenrohres gedrückt und bewirkt eine Drehbewegung des Treibspiegels 4 sowie über die Gewindeverbindung 6 eine entsprechende Drehbewegung des Penetrators 3. Sobald das Geschoss 1 das Waffenrohr verlassen hat, reißen die Sollbruchstellen 18 aufgrund der auf sie wirkenden Zentrifugalkräfte entlang der Längsnuten 12, und die Treibspiegelsegmente 13-16 werden mit hoher Geschwindigkeit symmetrisch in Bezug auf die Flugbahn des Geschosses 1 abgeworfen.When the projectile 1 is fired, the sealing and guide band 11 is pressed into the trains of the corresponding weapon barrel by the force of the propellant gases and causes a rotating movement of the sabot 4 and, via the threaded connection 6, a corresponding rotational movement of the penetrator 3. As soon as the projectile 1 leaves the weapon barrel has the predetermined breaking points 18 due to the centrifugal forces acting on them along the longitudinal grooves 12, and the sabot segments 13-16 are thrown symmetrically with respect to the trajectory of the projectile 1 at high speed.

Nachfolgend wird ein bevorzugtes Verfahren zur Herstellung des vorstehend offenbarten Geschosses beschrieben:
Ausgehend von einem Rohling, der bereits die äußere Kontur des Grundkörpers 5 sowie die zentrale Bohrung 20 für den Penetrator 3 und das Gewinde zur formschlüssigen Verbindung von Penetrator 3 und Treibspiegel 4 besitzt, werden, wenn erwünscht, von der Frontseite des vorderen Führungsflansches 7 aus, in axialer Richtung bis zum hinteren Führungsflansch 8, die vier Bohrungen 17 zur Gewichtsreduzierung eingebracht. Zur Verhinderung des Schlupfes während der Drallübertragung zwischen dem Führungsband 10 und dem Treibspiegel 8 ist die Basis der Ausnehmung 10 des Führungsbandes vorzugsweise mit einer Randrierung am gesamten Umfang versehen. Zum Schutz vor dem Einsinken in das Zug- Feldprofiim Waffenrohr ist der Treibspiegel mittels eines anodischen Oxidationsverfahrens beschichtet. Diese Beschichtung ist hauptsächlich an den beiden Führungsflanschen 7 und 8 wichtig und zeichnet sich durch seine Härte und Abriebsfestigkeit aus.A preferred method for producing the projectile disclosed above is described below:
Starting from a blank that already has the outer contour of the base body 5 and the central bore 20 for the penetrator 3 and the thread for the positive connection of the penetrator 3 and sabot 4, if desired, from the front of the front guide flange 7, in the axial direction to the rear guide flange 8, the four bores 17 are introduced to reduce weight. To prevent slippage during the swirl transmission between the guide belt 10 and the sabot 8, the base of the recess 10 of the guide belt is preferably provided with a rim on the entire circumference. To protect against sinking in the sabot is coated in the Zug field professional in the weapon barrel by means of an anodic oxidation process. This coating is mainly important on the two guide flanges 7 and 8 and is characterized by its hardness and abrasion resistance.

Der vorgefertigte Penetrator 3 wird nun mittels Gewinde soweit in den Treibspiegel 4 eingeschraubt, bis dieser an dem Gewindeanschlag 22 formschlüssig am Treibspiegel 4 ansteht.The prefabricated penetrator 3 is now screwed into the sabot 4 by means of a thread until it abuts the sabot 4 in a form-fitting manner at the threaded stop 22.

Anschließend wird in die Ausnehmung 10 des hinteren Führungsflansches 8 das Dichtungs- und Führungsband 11 sowie gleichzeitig die Heckabdichtung 19 mittels eines Kunststoffspritzgussverfahrens eingebracht. Dies wird dadurch ermöglicht da der Führungsbandbereich 10 mittels Längsschlitzen 21 mit dem Bereich der Heckabdichtung 19 verbunden ist.The sealing and guide band 11 and at the same time the rear seal 19 are then introduced into the recess 10 of the rear guide flange 8 by means of a plastic injection molding process. This is made possible because the guide band area 10 is connected to the area of the rear seal 19 by means of longitudinal slots 21.

Im Anschluss wird das Flügelleitwerk 2 als komplette Einheit auf den Penetrator aufgeschraubt.The wing control unit 2 is then screwed onto the penetrator as a complete unit.

Die Erfindung ist selbstverständlich nicht auf das vorstehend beschriebene Ausführungsbeispiel beschränkt. So kann sich der Treibspiegel beispielsweise auch nur aus zwei oder drei Treibspiegelsegmenten zusammensetzen. Außerdem können die Dichtungs- und Führungsbänder statt aus Kunststoff auch aus einem anderen geeigneten Materials, etwa Sintermetalle, bestehen.The invention is of course not limited to the embodiment described above. For example, the sabot can be composed of only two or three sabot segments. In addition, the sealing and guide tapes can also consist of another suitable material, such as sintered metals, instead of plastic.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Unterkalibergeschoss, GeschossLower-caliber floor, floor
22
Flügelleitwerkwing tail
33
Penetratorpenetrator
44
Treibspiegelsabot
55
Grundkörperbody
66
formschlüssige Verbindung, Gewindeverbindungpositive connection, threaded connection
77
(vorderer) Führungsflansch(front) guide flange
88th
(hinterer) Führungsflansch(rear) guide flange
99
Verbindungsabschnittconnecting portion
1010
Ausnehmungrecess
1111
Dichtungs- und FührungsbandSealing and guide tape
1212
Längsnutlongitudinal groove
13-1613-16
TreibspiegelsegmenteSabot segments
1717
Bohrungdrilling
1818
Bereich, SollbruchstelleArea, predetermined breaking point
1919
Heckabdichtungrear seal
2020
zentrale Bohrungcentral hole
2121
Längsschlitzelongitudinal slots
2222
Gewindeanschlagthread stop

Claims (8)

  1. Fin-stabilized sub-calibre projectile (1) capable of being fired from a rifled barrel, comprising a penetrator (3) bearing a tail fin assembly (2) and a discardable sabot (4) arranged on the penetrator (3) and consisting of a number of circumferentially interconnected sabot segments (13-16), which are separated from one another after leaving the barrel by the centrifugal forces acting on the projectile (1) during firing, with the features that
    a) the sabot (4) comprises a main body (5) of a light metal alloy,
    which has a front guide flange (7), which can be supported on the inner wall of the barrel, and a rear guide flange (8), which is arranged at an axial distance, wherein the connecting portion (9) of the sabot that is located between the two guide flanges (7, 8) has a smaller outer diameter than the guide flanges (7, 8);
    b) the sabot (4) and the penetrator (3) are connected to one another in a form-fitting manner in the region of the rear guide flange (8);
    c) a sealing and guiding band (11) is fastened on the outer circumference of the rear guide flange (8);
    d) the main body (5) has a number of longitudinal grooves (12) arranged evenly distributed over the circumference and extending axially, which laterally bound the sabot segments (13-16), characterized in that
    e) the main body (5) contains bores (17) passing axially through the front guide flange (7) and extending up to the rear guide flange (8) along the longitudinal grooves (12).
  2. Fin-stabilized sub-calibre projectile according to Claim 1, characterized in that the diameter of the bores (17) is chosen such that the region (18) between the penetrator (3) and the respective bore (17) in which the main body (5) has its smallest wall thickness acts as a predetermined breaking point along which the sabot segments (13-16) separate from one another after leaving the barrel.
  3. Fin-stabilized sub-calibre projectile according to Claim 1 or 2, characterized in that the main body (5) consists of an aluminium alloy.
  4. Fin-stabilized sub-calibre projectile according to one of Claims 1 to 3, characterized in that the form-fitting connection (6) between the sabot (4) and the penetrator (3) is a threaded connection.
  5. Fin-stabilized sub-calibre projectile according to one of Claims 1 to 4, characterized in that the sealing and guiding band (11) consists of plastic.
  6. Fin-stabilized sub-calibre projectile according to one of Claims 1 to 5, characterized in that, on the rear side, the main body (5) is provided by means of a rear seal (19) consisting of plastic.
  7. Method for producing a fin-stabilized sub-calibre projectile capable of being fired from a rifled barrel according to one of Claims 1 to 6, with the features:
    • starting from a blank that already has the outer contour of the main body (5) as well as the central bore (20) for the penetrator (3) and the thread for the form-fitting connection of the penetrator (3) and the sabot (4), the penetrator (3) is screwed into the sabot (4) until the penetrator (3) rests against the sabot (4) in a form-fitting manner,
    • thereafter, the sealing and guiding band (11) as well as the rear seal (19) are introduced into the recess (10) of the rear guide flange (8) by means of a plastics injection-moulding process, and
    • following which, the tail fin assembly (2) is screwed as a complete unit onto the penetrator (3),
    • for weight reduction, in the prefabricated penetrator (3) bores (17) are introduced from the front side of the front guide flange (7) in the axial direction up to the rear guide flange (8) prior to assembly.
  8. Method according to Claim 7, characterized in that the introduction of the sealing and guiding band (11) as well as the rear seal (19) take place simultaneously.
EP16732660.2A 2015-07-01 2016-06-28 Fin-stabilized sub-calibre projectile which can be fired from a rifled barrel and method for the production thereof Active EP3317607B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015110627.2A DE102015110627A1 (en) 2015-07-01 2015-07-01 From a drawn gun barrel moldable, wing stabilized subcaliber bullet and method for its production
PCT/EP2016/065056 WO2017001428A1 (en) 2015-07-01 2016-06-28 Fin-stabilized sub-calibre projectile which can be fired from a rifled barrel and method for the production thereof

Publications (2)

Publication Number Publication Date
EP3317607A1 EP3317607A1 (en) 2018-05-09
EP3317607B1 true EP3317607B1 (en) 2020-01-08

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Country Link
US (1) US10996035B2 (en)
EP (1) EP3317607B1 (en)
CA (1) CA2996430C (en)
DE (1) DE102015110627A1 (en)
WO (1) WO2017001428A1 (en)

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US11421970B2 (en) 2017-05-22 2022-08-23 Fsg Enterprises Spinning projectile
WO2020217227A2 (en) * 2019-04-26 2020-10-29 University Of Kansas Maneuvering aeromechanically stable sabot system

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Also Published As

Publication number Publication date
CA2996430C (en) 2023-09-26
EP3317607A1 (en) 2018-05-09
WO2017001428A1 (en) 2017-01-05
US20180216922A1 (en) 2018-08-02
CA2996430A1 (en) 2017-01-05
US10996035B2 (en) 2021-05-04
DE102015110627A1 (en) 2017-01-05

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