EP0624774B1 - Sabot for a finstabilized projectile - Google Patents

Sabot for a finstabilized projectile Download PDF

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Publication number
EP0624774B1
EP0624774B1 EP94104252A EP94104252A EP0624774B1 EP 0624774 B1 EP0624774 B1 EP 0624774B1 EP 94104252 A EP94104252 A EP 94104252A EP 94104252 A EP94104252 A EP 94104252A EP 0624774 B1 EP0624774 B1 EP 0624774B1
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EP
European Patent Office
Prior art keywords
sabot
projectile
sub
segments
sealing
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
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EP94104252A
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German (de)
French (fr)
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EP0624774A1 (en
Inventor
Rudolf Rossmann
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RWM Schweiz AG
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Oerlikon Contraves Pyrotec AG
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Publication of EP0624774A1 publication Critical patent/EP0624774A1/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
    • 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
    • F42B14/067—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 invention relates to a droppable sabot a wing-stabilized sub-caliber floor that a gun barrel with swirl grooves can be fired, according to the preamble of claim 1.
  • the sealing strips in the channels of the contact surfaces of the segments and the annular End seals are integral with what is referred to as the sabot body Plastic part formed.
  • the circular, i.e. flat, rear end surface of the sabot is the area exposed to the propellant gases. It has now been shown that the Seal is unsatisfactory, both due to the insufficient effect of the weather strip between the segments not connected to each other as well as the shape is the rear end surface, which does not improve the sealing effect made possible by the propellant gases.
  • a sabot projectile in CH-675 769 A5 a predetermined breaking point on the rear part of the sabot described, the rear part for segmentation Longitudinal slots and one in the area of the outer diameter Has ring containing predetermined breaking points.
  • the propellant is at the rear end of the sabot rear a hemispherical sealing shell of the Sabot coating provided. So that The sabot rear part is not when the projectile is shot down disintegrated into its sectors prematurely, i.e. around the on the Sealing shell to gas pressure acting radially outwards neutralize, interacting support surfaces are on Sabot rear and on the rear face of the Projectile body provided. This is in the genus of present registration not possible.
  • the object of the present invention is now to to improve the seal so that a absolutely reliable gas seal between the gun barrel and Sabot, unaffected by the wear and tear of a Gun barrel during its lifetime.
  • the object is achieved in that the droppable sabot the characteristics in the hallmark of the Claim 1 contains.
  • the sabot jacket is covered with the Sabot body through the inner wall of the gun barrel held together in such a way that a reliable seal between the sub-caliber bullet body or a Arrow projectile body and sabot is guaranteed.
  • old cannon tubes where the inner diameter of the pipe has increased due to wear however, the danger that the segments of the Sabot body move radially outwards and the Segments of the sabot body no longer on Arrowhead body rest so that between sabot and sub-caliber floor gas can escape.
  • FIG. 1 is a sabot 10 on one Lower-caliber floor, in particular an arrow floor 11 attached.
  • the arrow projectile 11 has a tip 12 at the front and behind a thread 13 for attaching one to itself known, not shown stabilizing wing.
  • a second external thread 14 on the central part 15 of the Arrow level 11 available. Since the arrow floor 11 is not The subject of the present invention is here not described in detail.
  • the sabot 10 is composed of a sabot body 16 and a sabot jacket 17 together. On the front The end of the sabot 10 is the arrowhead 12 through a Hood 18 covered.
  • the sabot jacket 17 instructs a peripheral groove 19 at its front end (see also Fig.2), in which a bead 20 protrudes, whereby the hood 18 is attached to the sabot jacket 17.
  • the sabot body 16 has an internal thread 21 and can be on the external thread 14 of the arrow projectile 11th screw on. Furthermore, the sabot body 16 has three longitudinal slots evenly distributed around the circumference or Longitudinal grooves 22, of which in Figures 1, 2, 4 and 5th only a single longitudinal groove 22 is visible in each case.
  • Fig.1 is a longitudinal slot 22 in the sabot body 16 on the right side indicated by a dashed line, where here the material of the sabot jacket 17 den Longitudinal slot 22 fills.
  • Sabot body 16 in three segments 23, 24, 25 divided. 4 shows two segments 23 and 24 and in 1 shows a further segment 25. These three segments 23, 24 and 25 are according to FIGS.
  • predetermined breaking points 26 connected to each other.
  • These predetermined breaking points are 26 according to the invention (see FIG. 1) at the rear end in the region of the Inner diameter of the sabot body 16 arranged to a premature unwanted burst when firing to prevent the pressure of the propellant gases.
  • the three Longitudinal slots 22 are arranged radially and point according to the invention at least in the range of Cartridge case attachment point 49 a T-shaped Cross section with two shoulders 27, see Fig. 1, 4 and 5, the meaning of which will be explained.
  • the Sabot body 16 a number of circumferential grooves.
  • the first circumferential groove 28 is used for attachment a cartridge case on the sabot bullet, or for Anchoring the sabot bullet in one not here shown cartridge case.
  • the remaining four circumferential grooves 29, 30, 31 and 32 are used to attach the Sabot jacket 17 on the sabot body 16. The The meaning of these grooves 29-32 is not closer here explained.
  • the sabot body 16 is preferably made of Made of light metal.
  • the sabot jacket 17 used for the present invention is considered essential surrounds the sabot body 16 almost completely. According to Fig. 1 and 2, only those do not protrude areas interrupted by the three longitudinal grooves 22 Cartridge case attachment point 49 with the circumferential groove 28, which are not used to attach the projectile in the serve cartridge case, as well as three on it adjoining segments of a support ring 50 from the Sabot jacket 17 out.
  • the sabot jacket 17 has a front portion 33, the front Bullet centering is called, as well as a rear Section 34, referred to as rear floor centering is and at the same time serves for swirl transmission and therefore a slightly larger diameter than the front section 33 owns. According to FIG.
  • the sabot jacket 17 three longitudinal slots 48 through which the Sabot jacket 17 also in three segments 35, 36 and 37 is divided. These three segments are 35, 36 and 37 1 and 3 through predetermined breaking points 38 with one another connected. The length of these predetermined breaking points is shown in Fig. 1 evident.
  • the sabot jacket 17 has six Cutouts 39 open, i.e. each of the three segments 35, 36 and 37 has two cutouts 39 (see FIG. 3).
  • the rear one Front side 40 of the sabot body 16 is by a Sealing cap 41 of the sabot jacket 17 except for the three Segments of the support ring 50 covered.
  • This face or End face 40 is partially conical with forward expanding lateral surface, the generatrix of the cone shell preferably by an arc with center in the area of the outside diameter of the Sabot 10 is formed, in other words forms the rear end face 40 one turned outward spherical zone-shaped support for the corresponding cooperatively formed sealing cap 41.
  • the sealing cap 41 has a annular end seal 42 on the three predetermined breaking points 43 evenly distributed around the circumference (see Fig.2) are arranged.
  • a ring-shaped rib protrudes further 44 in a corresponding axial safety groove 45 on rear end of the sabot body 16.
  • the Final seal 42 partially on the thread 14 of the Arrow projectile 11, protrudes beyond this thread and is partially as a cylindrical portion 47 cylindrical surface 46.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Testing Of Engines (AREA)
  • Gasket Seals (AREA)
  • Actuator (AREA)

Description

Die Erfindung betrifft einen abwerfbaren Treibspiegel an einem flügelstabilisierten Unterkalibergeschoss, das aus einem mit Drallnuten versehenen Waffenrohr abschiessbar ist, gemäss dem Oberbegriff des Anspruches 1.The invention relates to a droppable sabot a wing-stabilized sub-caliber floor that a gun barrel with swirl grooves can be fired, according to the preamble of claim 1.

Bei einem bekannten flügelstabilisierten Unterkalibergeschoss dieser Art (siehe EP-A-0 300 373 bzw. US-A-4,815,682) sind die drei Segmente des Treibspiegelkörpers oder Treibspiegelhecks durch den Treibspiegelmantel (dort als Treibspiegelkörper bezeichnet) zusammengehalten. Zur Abdichtung der Berührungsflächen zwischen den drei Segmenten weisen diese Berührungsflächen Kanäle auf, in welche Abdichtungsstreifen eingesetzt sind. Zur Abdichtung der Berührungsflächen zwischen dem Unterkalibergeschoss oder Pfeilgeschoss und den drei Segmenten des Treibspiegelhecks oder Treibspiegelkörpers ist im Bereich der hinteren Stirnfläche des Treibspiegelhecks eine ringförmige Dichtung vorhanden. In a known wing stabilized Sub-caliber bullet of this type (see EP-A-0 300 373 or US-A-4,815,682) are the three segments of the Sabot body or sabot tails through the Sabot jacket (referred to as sabot body) held together. For sealing the contact surfaces between the three segments they have contact surfaces Channels in which sealing strips are inserted. To seal the contact surfaces between the Sub-caliber floor or arrow floor and the three Segments of the sabot rear or sabot body in the area of the rear face of the sabot rear an annular seal is present.

Die Dichtungsstreifen in den Kanälen der Berührungsflächen der Segmente und die ringförmige Abschlussdichtung sind integral mit dem als Treibspiegelkörper bezeichneten Kunststoffteil ausgebildet. Die kreisringförmige, also ebene hintere Endfläche des Treibspiegels ist die von den Treibgasen beaufschlagte Fläche. Es hat sich nun gezeigt, dass die Dichtung unbefriedigend ist, was sowohl auf die Ungenügende Wirkung der Dichtungsstreifen zwischen den unter sich nicht verbundenen Segmenten wie auch auf die Formgebung der hinteren Endfläche zurückzuführen ist, welche keine Verbesserung der Dichtwirkung durch die Treibgase ermöglicht. The sealing strips in the channels of the contact surfaces of the segments and the annular End seals are integral with what is referred to as the sabot body Plastic part formed. The circular, i.e. flat, rear end surface of the sabot is the area exposed to the propellant gases. It has now been shown that the Seal is unsatisfactory, both due to the insufficient effect of the weather strip between the segments not connected to each other as well as the shape is the rear end surface, which does not improve the sealing effect made possible by the propellant gases.

Ferner ist in der CH-675 769 A5 ein Treibspiegelgeschoss mit einer Sollbruchstelle am Heckteil des Treibspiegels beschrieben, wobei der Heckteil zur Segmentierung Längsschlitze und im Bereich des Aussendurchmessers einen Sollbruchstellen enthaltenden Ring aufweist. Zur Abdichtung der Treibgase ist am hinteren Ende des Treibspiegelhecks eine halbkugelförmige Abdichtungsschale des Treibspiegelmantels vorgesehen. Damit das Treibspiegelheckteil beim Abschuss des Geschosses nicht vorzeitig in seine Sektoren zerfällt, d.h. um den auf die Abdichtungsschale radial nach aussen wirkenden Gasdruck zu neutralisieren, sind zusammenwirkende Stützflächen am Treibspiegelheck und an der hinteren Stirnfläche des Geschosskörpers vorgesehen. Dies ist bei der Gattung der vorliegenden Anmeldung nicht möglich.There is also a sabot projectile in CH-675 769 A5 a predetermined breaking point on the rear part of the sabot described, the rear part for segmentation Longitudinal slots and one in the area of the outer diameter Has ring containing predetermined breaking points. For sealing the propellant is at the rear end of the sabot rear a hemispherical sealing shell of the Sabot coating provided. So that The sabot rear part is not when the projectile is shot down disintegrated into its sectors prematurely, i.e. around the on the Sealing shell to gas pressure acting radially outwards neutralize, interacting support surfaces are on Sabot rear and on the rear face of the Projectile body provided. This is in the genus of present registration not possible.

Die Aufgabe der vorliegenden Erfindung besteht nun darin, die Dichtung so zu verbessern, dass beim Abschuss eine absolut zuverlässige Gasdichtung zwischen Kanonenrohr und Treibspiegel, unbeeinflusst von der Abnutzung eines Kanonenrohres während seiner Lebensdauer, erreicht wird.The object of the present invention is now to to improve the seal so that a absolutely reliable gas seal between the gun barrel and Sabot, unaffected by the wear and tear of a Gun barrel during its lifetime.

Die Aufgabe wird erfindungsgemäss dadurch gelöst, dass der abwerfbare Treibspiegel die Merkmale im Kennzeichen des Anspruches 1 enthält.The object is achieved in that the droppable sabot the characteristics in the hallmark of the Claim 1 contains.

Bei neuen Kanonenrohren wird der Treibspiegelmantel mit dem Treibspiegelkörper durch die Innenwand des Kanonenrohres zusammengehalten, derart, dass eine zuverlässige Dichtung zwischen Unterkalibergeschosskörper bzw. einem Pfeilgeschosskörper und Treibspiegel gewährleistet ist. Bei alten Kanonenrohren, bei denen sich der Innendurchmesser des Rohres durch die Abnützung vergrössert hat, besteht jedoch die Gefahr, dass beim Abschuss die Segmente des Treibspiegelkörpers sich radial nach aussen bewegen und die Segmente des Treibspiegelkörpers nicht mehr am Pfeilgeschosskörper anliegen, sodass zwischen Treibspiegel und Unterkalibergeschosskörper Gas austreten kann. Dies wird nun durch die sich nach vorne ausweitende Mantelfläche der Treibspiegelmantel-Abdeckung an der hinteren Stirnfläche des Treibspiegels, vorzugsweise durch die nach aussen gestülpte kugelzonenförmige Mantelfläche der Dichtkappe, sowie durch die T-förmigen Längsschlitze im Bereich der Patronenhülsenbefestigungsstelle verhindert. Durch die spezielle Form des Kegelmantels sowie den T-förmigen Längsschlitzen hat der Gasdruck das Bestreben, die einzelnen Segmente des Treibspiegelkörpers gegen den Körper des Pfeilgeschosses anzudrücken, derart, dass eine zuverlässige Gasdichtung zwischen Unterkalibergeschoss bzw. Pfeilgeschoss und Treibspiegel gewährleistet ist.In the case of new gun barrels, the sabot jacket is covered with the Sabot body through the inner wall of the gun barrel held together in such a way that a reliable seal between the sub-caliber bullet body or a Arrow projectile body and sabot is guaranteed. With old cannon tubes, where the inner diameter of the pipe has increased due to wear however, the danger that the segments of the Sabot body move radially outwards and the Segments of the sabot body no longer on Arrowhead body rest so that between sabot and sub-caliber floor gas can escape. this will now through the outer surface of the Sidelight cover on the rear face of the Sabot, preferably through the outside spherical zone-shaped outer surface of the sealing cap, and by the T-shaped longitudinal slots in the area of the Cartridge sleeve attachment point prevented. Through the special shape of the cone shell and the T-shaped Longitudinal slits, the gas pressure tends to the individual Segments of the sabot body against the body of the Press the arrow stick in such a way that a reliable Gas seal between the lower-caliber floor or arrow floor and sabot is guaranteed.

Durch die Ausbildung des Treibspiegels gemäss Anspruch 1, vorteilhafterweise mit kugelzonenförmiger Dichtkappe gemäss Anspruch 2, werden folgende Vorteile erreicht:

  • a) Keine Gasleckage beim Abschuss, d.h. bessere Gasdichtung des Treibspiegels während der Geschossbewegung im Kanonenrohr;
  • b) der Gasdruck kann den Treibspiegel gegen den Pfeilgeschosskörper pressen, d.h. auch bei alten Kanonenrohren ist ein einwandfreier Abschuss gewährleistet;
  • c) da, wie erwähnt, der Treibspiegel besser am Pfeilgeschosskörper anliegt, wird die Gefahr von Brüchen des Pfeilgeschosskörpers vermindert;
  • d) dank der verbesserten Gasdichtung, insbesondere durch die T-förmigen Längsschlitze, ist auch die Lager- und Transport-Dichtigkeit gegenüber dem Pulverraum wesentlich verbessert worden;
  • e) trotz der verbesserten Gasdichtung sind die Sollbruchstellen zwischen den einzelnen Segmenten des Treibspiegels klein, derart, dass sich beim Austritt des Geschosses der Treibspiegel leicht radial in Segmente zerlegen lässt ohne die Flugbahn des Pfeilgeschosses zu beeinträchtigen, somit ergibt sich eine gute Treffgenauigkeit;
  • f) auch die Herstellung des Treibspiegels ist einfach und kostengünstig.
    • The following advantages are achieved by designing the sabot according to claim 1, advantageously with a spherical zone sealing cap according to claim 2:
  • a) No gas leakage when firing, ie better gas sealing of the sabot during the projectile movement in the gun barrel;
  • b) the gas pressure can press the sabot against the arrow projectile body, ie a perfect shot is guaranteed even with old cannon tubes;
  • c) since, as mentioned, the sabot lies better on the arrow projectile body, the risk of breakages of the arrow projectile body is reduced;
  • d) thanks to the improved gas seal, in particular through the T-shaped longitudinal slots, the storage and transport tightness compared to the powder chamber has been significantly improved;
  • e) despite the improved gas seal, the predetermined breaking points between the individual segments of the sabot are small, such that when the projectile emerges the sabot can easily be broken down radially into segments without impairing the trajectory of the arrow projectile, so that there is good accuracy;
  • f) the production of the sabot is simple and inexpensive.

    • Der einteilig ausgebildete Treibspiegelmantel besteht aus den folgenden zusammenhängenden Teilen:

  • a) Geschosszentrierung vorne und Drallübertragung mit Geschosszentrierung hinten mit Verankerung am Treibspiegelkörper;
  • b) Dichtung der Längsschlitze des Treibspiegelkörpers, insbesondere im Bereich der Patronenhülsenbefestigungsstelle;
  • c) Dichtkappe auf der hinteren Stirnfläche des Treibspiegelkörpers, welche als Beschleunigungspartie bezeichnet wird, und integrierte Abschlussdichtung.
    • The one-piece sabot jacket consists of the following connected parts:
  • a) projectile centering at the front and swirl transmission with projectile centering at the rear with anchoring to the sabot body;
  • b) sealing the longitudinal slots of the sabot body, in particular in the area of the cartridge case attachment point;
  • c) Sealing cap on the rear end face of the sabot body, which is referred to as the acceleration section, and integrated end seal.

    • Bei einem anderen bekannten flügelstabilisierten Pfeilgeschoss dieser Art (siehe DE-A-35 25 854) besteht der Treibspiegel aus einem Mantel vorne, einem Treibspiegelkörper in der Mitte und einer Dichtscheibe hinten. Da Dichtscheibe und Mantel nicht gasdicht miteinander verbunden sind und eine Abschlussdichtung fehlt, ist eine einwandfreie Gasdichtung beim Abschuss nicht gewährleistet.In another known wing stabilized Arrow projectile of this type (see DE-A-35 25 854) exists the sabot from a coat in front, one Sabot body in the middle and a sealing washer behind. Because the sealing washer and jacket are not gas-tight are connected to one another and a sealing gasket is missing, is not a perfect gas seal when fired guaranteed.

    Ein Ausführungsbeispiel des erfindungsgemässen Treibspiegels für ein flügelstabilisiertes Unterkalibergeschoss ist im folgenden anhand der beigefügten Zeichnung ausführlich beschrieben. Es zeigt:

    Fig.1
    einen Längsschnitt entlang der Linie I - I in Fig.3 durch einen abwerfbaren Treibspiegel mit einem flügelstabilisierten Pfeilgeschoss;
    Fig.2
    eine Ansicht des in Fig.1 dargestellten Treibspiegels mit einem Teil des Pfeilgeschosses, jedoch gegenüber Fig.1 um 90° verdreht;
    Fig.3
    einen Querschnitt durch den Treibspiegel entlang der Linie III - III in Fig.1;
    Fig.4
    einen Teilquerschnitt in vergrössertem Massstab durch den Treibspiegel entlang der Linie IV - IV in Fig.1, jedoch wie Fig.2 um 90° verdreht;
    Fig.5
    ein Detail aus Fig.1 in vergrössertem Massstab an der durch einen Pfeil A bezeichneten Stelle.
    An embodiment of the sabot according to the invention for a wing-stabilized lower-caliber floor is described in detail below with reference to the accompanying drawing. It shows:
    Fig. 1
    a longitudinal section along the line I - I in Figure 3 by a droppable sabot with a wing-stabilized arrow projectile;
    Fig. 2
    a view of the sabot shown in Figure 1 with part of the arrow projectile, but rotated by 90 ° compared to Figure 1;
    Fig. 3
    a cross section through the sabot along the line III - III in Figure 1;
    Fig. 4
    a partial cross section on an enlarged scale through the sabot along the line IV - IV in Figure 1, but rotated by 90 ° like Figure 2;
    Fig. 5
    a detail of Figure 1 on an enlarged scale at the point indicated by an arrow A.

    Gemäss Fig.1 ist ein Treibspiegel 10 an einem Unterkalibergeschoss, insbesondere einem Pfeilgeschoss 11 befestigt. Das Pfeilgeschoss 11 weist vorne eine Spitze 12 und hinten ein Gewinde 13 zur Befestigung eines an sich bekannten, nicht dargestellten Stabilisierungsflügels auf. Zur Befestigung des Treibspiegels 10 am Pfeilgeschoss 11 ist ein zweites Aussengewinde 14 am Mittelteil 15 des Pfeilgeschosses 11 vorhanden. Da das Pfeilgeschoss 11 nicht Gegenstand der vorliegenden Erfindung ist, wird es hier nicht näher beschrieben.1 is a sabot 10 on one Lower-caliber floor, in particular an arrow floor 11 attached. The arrow projectile 11 has a tip 12 at the front and behind a thread 13 for attaching one to itself known, not shown stabilizing wing. For fastening the sabot 10 on the arrow floor 11 is a second external thread 14 on the central part 15 of the Arrow level 11 available. Since the arrow floor 11 is not The subject of the present invention is here not described in detail.

    Der Treibspiegel 10 setzt sich aus einem Treibspiegelkörper 16 und einem Treibspiegelmantel 17 zusammen. Am vorderen Ende des Treibspiegels 10 ist die Pfeilspitze 12 durch eine Haube 18 abgedeckt. Der Treibspiegelmantel 17 weist an seinem vorderen Ende eine Umfangsrille 19 auf (siehe auch Fig.2), in welche ein Wulst 20 hineinragt, wodurch die Haube 18 am Treibspiegelmantel 17 befestigt ist.The sabot 10 is composed of a sabot body 16 and a sabot jacket 17 together. On the front The end of the sabot 10 is the arrowhead 12 through a Hood 18 covered. The sabot jacket 17 instructs a peripheral groove 19 at its front end (see also Fig.2), in which a bead 20 protrudes, whereby the hood 18 is attached to the sabot jacket 17.

    Der Treibspiegelkörper 16 weist ein Innengewinde 21 auf und lässt sich auf das Aussengewinde 14 des Pfeilgeschosses 11 aufschrauben. Ferner weist der Treibspiegelkörper 16 drei gleichmässig am Umfang verteilte Längsschlitze oder Längsnuten 22 auf, von denen in den Figuren 1, 2, 4 und 5 jeweils nur eine einzige Längsnut 22 sichtbar ist. In Fig.1 ist ein Längsschlitz 22 im Treibspiegelkörper 16 auf der rechten Seite durch eine gestrichelte Linie angezeigt, wobei hier das Material des Treibspiegelmantels 17 den Längsschlitz 22 ausfüllt. Durch diese Längsnuten 22 wird der Treibspiegelkörper 16 in drei Segmente 23, 24, 25 unterteilt. In Fig.4 sind zwei Segmente 23 und 24 und in Fig.1 ein weiteres Segment 25 gezeigt. Diese drei Segmente 23, 24 und 25 sind gemäss Fig.1 und 5 durch Sollbruchstellen 26 miteinander verbunden. Diese Sollbruchstellen 26 sind erfindungsgemäss (siehe Fig.1) am hinteren Ende im Bereich des Innendurchmessers des Treibspiegelkörpers 16 angeordnet, um ein vorzeitiges unerwünschtes Aufbrechen beim Abschuss durch den Druck der Treibgase zu verhindern. Die drei Längsschlitze 22 sind radial angeordnet und weisen erfindungsgemäss mindestens im Bereich einer Patronenhülsenbefestigungsstelle 49 einen T-förmigen Querschnitt mit zwei Schultern 27 auf, siehe Fig.1, 4 und 5, deren Bedeutung noch erläutert wird. Ferner weist der Treibspiegelkörper 16 eine Anzahl Umfangsnuten auf. Vom unteren oder hinteren Ende des Treibspiegelkörpers 16 aus betrachtet, dient die erste Umfangsnut 28 zur Befestigung einer Patronenhülse am Treibspiegelgeschoss, oder zur Verankerung des Treibspiegelgeschosses in einer hier nicht dargestellten Patronenhülse. Die übrigen vier Umfangsnuten 29, 30, 31 und 32 dienen zur Befestigung des Treibspiegelmantels 17 am Treibspiegelkörper 16. Die Bedeutung dieser Nuten 29 - 32 ist hier nicht näher erläutert. Der Treibspiegelkörper 16 wird vorzugsweise aus Leichtmetall hergestellt.The sabot body 16 has an internal thread 21 and can be on the external thread 14 of the arrow projectile 11th screw on. Furthermore, the sabot body 16 has three longitudinal slots evenly distributed around the circumference or Longitudinal grooves 22, of which in Figures 1, 2, 4 and 5th only a single longitudinal groove 22 is visible in each case. In Fig.1 is a longitudinal slot 22 in the sabot body 16 on the right side indicated by a dashed line, where here the material of the sabot jacket 17 den Longitudinal slot 22 fills. Through these longitudinal grooves 22 Sabot body 16 in three segments 23, 24, 25 divided. 4 shows two segments 23 and 24 and in 1 shows a further segment 25. These three segments 23, 24 and 25 are according to FIGS. 1 and 5 through predetermined breaking points 26 connected to each other. These predetermined breaking points are 26 according to the invention (see FIG. 1) at the rear end in the region of the Inner diameter of the sabot body 16 arranged to a premature unwanted burst when firing to prevent the pressure of the propellant gases. The three Longitudinal slots 22 are arranged radially and point according to the invention at least in the range of Cartridge case attachment point 49 a T-shaped Cross section with two shoulders 27, see Fig. 1, 4 and 5, the meaning of which will be explained. Furthermore, the Sabot body 16 a number of circumferential grooves. From lower or rear end of the sabot body 16 viewed, the first circumferential groove 28 is used for attachment a cartridge case on the sabot bullet, or for Anchoring the sabot bullet in one not here shown cartridge case. The remaining four circumferential grooves 29, 30, 31 and 32 are used to attach the Sabot jacket 17 on the sabot body 16. The The meaning of these grooves 29-32 is not closer here explained. The sabot body 16 is preferably made of Made of light metal.

    Der Treibspiegelmantel 17, der für die vorliegende Erfindung als wesentlich angesehen wird, umgibt den Treibspiegelkörper 16 fast vollständig. Gemäss Fig.1 und 2 ragen nur die nicht durch die drei Längsnuten 22 unterbrochenen Bereiche der Patronenhülsenbefestigungsstelle 49 mit der Umfangsnut 28, welche zur Befestigung des Geschosses in der nicht dargestellten Patronenhülse dienen, sowie drei daran anschliessende Segmente eines Stützringes 50 aus dem Treibspiegelmantel 17 heraus. Der Treibspiegelmantel 17 weist einen vorderen Abschnitt 33 auf, der als vordere Geschosszentrierung bezeichnet wird, sowie einen hinteren Abschnitt 34, der als hintere Geschosszentrierung bezeichnet wird und zugleich zur Drallübertragung dient und deshalb einen etwas grösseren Durchmesser als der vordere Abschnitt 33 besitzt. Gemäss Fig.3 weist der Treibspiegelmantel 17 drei Längsschlitze 48 auf, durch welche der Treibspiegelmantel 17 ebenfalls in drei Segmente 35, 36 und 37 unterteilt wird. Diese drei Segmente 35, 36 und 37 sind gemäss Fig.1 und 3 durch Sollbruchstellen 38 miteinander verbunden. Die Länge dieser Sollbruchstellen ist aus Fig.1 ersichtlich. Ausserdem weist der Treibspiegelmantel 17 sechs Aussparungen 39 auf, d.h. jedes der drei Segmente 35, 36 und 37 weist zwei Aussparungen 39 auf (siehe Fig.3). Die hintere Stirnseite 40 des Treibspiegelkörpers 16 ist durch eine Dichtkappe 41 des Treibspiegelmantels 17 bis auf die drei Segmente des Stützringes 50 abgedeckt. Diese Stirnseite bzw. Stirnfläche 40 ist teilweise kegelförmig mit nach vorne ausweitender Mantelfläche ausgebildet, wobei die Erzeugende des Kegelmantels vorzugsweise durch einen Kreisbogen mit Zentrum im Bereich des Aussendurchmessers des Treibspiegels 10 gebildet wird, mit anderen Worten bildet die hintere Stirnfläche 40 eine nach aussen gestülpte kugelzonenförmige Auflage für die entsprechend zusammenwirkend ausgebildete Dichtkappe 41. Damit wirkt der Druck der Treibgase beim Abschuss abdichtungsunterstützend.The sabot jacket 17 used for the present invention is considered essential surrounds the sabot body 16 almost completely. According to Fig. 1 and 2, only those do not protrude areas interrupted by the three longitudinal grooves 22 Cartridge case attachment point 49 with the circumferential groove 28, which are not used to attach the projectile in the serve cartridge case, as well as three on it adjoining segments of a support ring 50 from the Sabot jacket 17 out. The sabot jacket 17 has a front portion 33, the front Bullet centering is called, as well as a rear Section 34, referred to as rear floor centering is and at the same time serves for swirl transmission and therefore a slightly larger diameter than the front section 33 owns. According to FIG. 3, the sabot jacket 17 three longitudinal slots 48 through which the Sabot jacket 17 also in three segments 35, 36 and 37 is divided. These three segments are 35, 36 and 37 1 and 3 through predetermined breaking points 38 with one another connected. The length of these predetermined breaking points is shown in Fig. 1 evident. In addition, the sabot jacket 17 has six Cutouts 39 open, i.e. each of the three segments 35, 36 and 37 has two cutouts 39 (see FIG. 3). The rear one Front side 40 of the sabot body 16 is by a Sealing cap 41 of the sabot jacket 17 except for the three Segments of the support ring 50 covered. This face or End face 40 is partially conical with forward expanding lateral surface, the generatrix of the cone shell preferably by an arc with center in the area of the outside diameter of the Sabot 10 is formed, in other words forms the rear end face 40 one turned outward spherical zone-shaped support for the corresponding cooperatively formed sealing cap 41. The Pressure of the propellant gases to support the seal when fired.

    Gemäss Fig.5 weist die Dichtkappe 41 eine ringförmige Abschlussdichtung 42 auf, an der drei gleichmässig am Umfang verteilte Sollbruchstellen 43 (siehe Fig.2) angeordnet sind. Weiter ragt eine ringförmige Rippe 44 in eine entsprechende axiale Sicherheitsnut 45 am hinteren Ende des Treibspiegelkörpers 16. Ferner liegt die Abschlussdichtung 42 teilweise am Gewinde 14 des Pfeilgeschosses 11 an, ragt über dieses Gewinde hinaus und liegt als zylindrischer Abschnitt 47 teilweise an der zylindrischen Oberfläche 46 an. Beim Abschuss wird die Dichtkappe 41 und die Abschlussdichtung 42 durch den Gasdruck radial und axial gegen den Pfeilgeschosskörper angepresst. Zur Verhinderung einer Verschiebung der Dichtkappe 41, gestrichelt dargestellt, nach aussen durch den Gasdruck, weist der Treibspiegelkörper 16 einen Stützring 50 zur äusseren Abstützung der Dichtkappe 41 auf.5, the sealing cap 41 has a annular end seal 42 on the three predetermined breaking points 43 evenly distributed around the circumference (see Fig.2) are arranged. A ring-shaped rib protrudes further 44 in a corresponding axial safety groove 45 on rear end of the sabot body 16. Furthermore, the Final seal 42 partially on the thread 14 of the Arrow projectile 11, protrudes beyond this thread and is partially as a cylindrical portion 47 cylindrical surface 46. When it is shot, the Sealing cap 41 and the end seal 42 through the Radial and axial gas pressure against the arrow projectile body pressed. To prevent a shift of the Sealing cap 41, shown in broken lines, to the outside the gas pressure, the sabot body 16 has one Support ring 50 for the outer support of the sealing cap 41.

    Gemäss Fig.4 haben die bereits erwähnten Schultern 27 in den Längsschlitzen 22 zwischen den Segmenten 23, 24 und 25 des Treibspiegelkörpers 16 insbesondere die Aufgabe, als zusätzliche Dichtflächen die Dichtung im Bereich der Patronenhülsenbefestigungsstelle 49 gegenüber dem Gasdruck beim Abschuss des Geschosses zu gewährleisten, denn durch den Gasdruck wird das in den Längsschlitzen 22 vorhandene Material des Treibspiegelmantels 17 gegen diese Schultern 27 gepresst, da der Gasdruck, wie durch Pfeile B angedeutet, radial nach innen wirkt. Ferner wird dadurch auch die Abdichtung zwischen dem Treibspiegelgeschoss und dem Pulverraum bei der Lagerung und dem Transport gewährleistet, insbesondere im Zusammenwirken mit einer bei der Patronierungsmontage verwendeten Dichtflüssigkeit.4 have the shoulders 27 already mentioned in the Longitudinal slots 22 between the segments 23, 24 and 25 of the Sabot body 16 in particular the task as additional sealing surfaces the seal in the area of Cartridge sleeve attachment point 49 against the gas pressure to ensure when shooting the projectile, because by the gas pressure is that existing in the longitudinal slots 22 Material of the sabot jacket 17 against these shoulders 27 pressed, since the gas pressure, as indicated by arrows B, acts radially inwards. Furthermore, this will also Sealing between the sabot projectile and the Powder room guaranteed during storage and transportation especially in cooperation with one at the Cartridge assembly sealant used.

    Claims (5)

    1. Releasable sabot (10) on a wing-stabilised sub-calibre projectile (11) which is launched from a gun barrel having helical grooves, containing:
      a sabot body (16), in which the sub-calibre projectile (11) is anchored, which is divisible into segments (23, 24, 25) and which comprises a cartridge mounting point (49) and a rear end section, and
      a sabot casing (17), which is divisible into segments (35, 36, 37) and which at least partially encases and penetrates the sub-calibre projectile (11) and the sabot body (16), and
      the sabot casing (17) comprises a sealing cap (41) which is integrated with the rear end section of the sabot body (16) and a final seal (42),
      characterised in that
      for for the purpose of segmentation and gastight sealing
      the sabot body (16) comprises elongated slots (22) and nominal breaking points (26) in such a manner that the nominal breaking points (26) are arranged in the area of the inside diameter at the end section of the sabot body (16),
      the elongated slots (22) have in the area of the cartridge mounting point (49) a T-shaped cross-section with two shoulders (27) as additional sealing surfaces for the material of the sabot casing (17) located in the elongated slots (22), and
      the end part of the sabot body (16) is partially truncated with the casing surface widening towards the front.
    2. Sabot (10) according to Claim 1,
      characterised in that
      the rear end section comprises an outwardly turned over end surface (40) in the shape of a spherical zone and the sealing cap (41), and the sabot body (16) is provided with a support ring (50) for external support of the sealing cap (41).
    3. Sabot according to Claim 1 or 2, characterised in that the final seal (42) comprises an annular web (44) which protrudes into an axially oriented safety groove (45) of the sabot body (16).
    4. Sabot according to Claim 3, characterised in that the final seal (42) abuts partially a thread (14) of the sub-calibre projectile (11) and partially a smooth cylinder surface (46) of the sub-calibre projectile (11) adjacent the thread (14).
    5. Sabot according to Claim 4, characterised in that the part of the final seal (42) which abuts the thread (14) is designed as a rearwardly protruding cylindrical section (47).
    EP94104252A 1993-05-13 1994-03-18 Sabot for a finstabilized projectile Expired - Lifetime EP0624774B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    CH145393 1993-05-13
    CH1453/93 1993-05-13

    Publications (2)

    Publication Number Publication Date
    EP0624774A1 EP0624774A1 (en) 1994-11-17
    EP0624774B1 true EP0624774B1 (en) 1998-06-10

    Family

    ID=4210825

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP94104252A Expired - Lifetime EP0624774B1 (en) 1993-05-13 1994-03-18 Sabot for a finstabilized projectile

    Country Status (7)

    Country Link
    US (1) US5388523A (en)
    EP (1) EP0624774B1 (en)
    JP (1) JP3429058B2 (en)
    CA (1) CA2121100C (en)
    DE (1) DE59406170D1 (en)
    ES (1) ES2118279T3 (en)
    NO (1) NO302440B1 (en)

    Families Citing this family (12)

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    Publication number Priority date Publication date Assignee Title
    CH691556A5 (en) * 1995-07-19 2001-08-15 Contraves Pyrotec Ag Device for fastening a cartridge case to a projectile.
    DE19650739C2 (en) * 1996-12-06 1999-12-16 Rheinmetall W & M Gmbh Sub-caliber floor
    EP0855573B1 (en) * 1997-01-27 2000-10-11 Oerlikon-Contraves Pyrotec AG Sabot for projectile
    US6324986B1 (en) 1998-11-06 2001-12-04 Oerlikon Contraves Ag Cartridge-case base for a sub-caliber projectile
    ATE205937T1 (en) 1999-02-25 2001-10-15 Contraves Pyrotec Ag LOWER CALIBER BULLET
    US6564720B1 (en) * 2000-01-14 2003-05-20 Olin Corporation Sabot for a bullet
    DE102005055504A1 (en) * 2005-11-18 2007-05-24 Rheinmetall Waffe Munition Gmbh Method for producing a segmented sabot
    DE102010045474A1 (en) * 2010-09-16 2012-03-22 Rheinmetall Waffe Munition Gmbh Projectile with disposable sabot
    US9188417B2 (en) 2013-08-01 2015-11-17 Raytheon Company Separable sabot for launching payload
    US10578382B1 (en) 2018-10-19 2020-03-03 Vitaliy Melnikov Auxiliary caliber weapon system
    US11852447B2 (en) 2019-04-26 2023-12-26 The University Of Kansas Maneuvering aeromechanically stable sabot system
    FR3115358B1 (en) * 2020-10-19 2023-11-24 Nexter Munitions ARTIFICIAL AND EXPLOSIVE PROJECTILE WITH A STABILIZING FLAT

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    Publication number Priority date Publication date Assignee Title
    US4187783A (en) * 1978-03-13 1980-02-12 The United States Of America As Represented By The Secretary Of The Army Discarding sabot munition
    CH632086A5 (en) * 1978-08-08 1982-09-15 Oerlikon Buehrle Ag METHOD FOR PRODUCING A DRIVING MIRROR BULLET AND DRIVING MIRROR BULLET PRODUCED BY THE METHOD.
    DE3033041C2 (en) * 1980-09-03 1986-04-10 L'Etat Français représenté par le Délégué Général pour l'Armement, Paris Metal and plastic sabot
    US4382411A (en) * 1981-02-02 1983-05-10 The United States Of America As Represented By The Secretary Of The Army Self aligning expansible sabot projectile for worn gun tubes
    US4424748A (en) * 1981-08-07 1984-01-10 The United States Of America As Represented By The Secretary Of The Army Segmented seal for discarding sabot ammunition
    DE3525854A1 (en) * 1985-07-19 1989-01-05 Mauser Werke Oberndorf WING-STABILIZED ARROW BULLET
    GB2241309B (en) * 1986-02-20 1992-02-05 Royal Ordnance Plc Projectiles and components therefor
    DE3872083D1 (en) * 1987-07-20 1992-07-23 Contraves Ag WING-STABILIZED SUB-CALIBAR FLOOR.
    US4901646A (en) * 1987-07-20 1990-02-20 Pacific Armatechnica Corporation Fin-stabilized subcaliber projectile
    US4815682A (en) * 1987-07-20 1989-03-28 Pacific Armatechnica Corporation Fin-stabilized subcaliber projectile and method of spin tuning
    CH675769A5 (en) * 1988-06-15 1990-10-31 Oerlikon Buehrle Ag Sectored head on detachable sabot - shatters with retainer ring having breakage grooves immediately after release on firing
    DE4009220A1 (en) * 1990-03-22 1991-09-26 Rheinmetall Gmbh Disposable drive cage for low calibre firearm - comprises several segment divided in weapon longitudinal direction, with guide band on outer periphery
    DE4020404A1 (en) * 1990-06-27 1992-01-09 Rheinmetall Gmbh Segmented drive cage for missile - has segments held together in outer area of adjacent webs by primary guide fillets

    Also Published As

    Publication number Publication date
    CA2121100C (en) 1998-02-24
    NO302440B1 (en) 1998-03-02
    EP0624774A1 (en) 1994-11-17
    ES2118279T3 (en) 1998-09-16
    NO941623L (en) 1994-11-14
    JP3429058B2 (en) 2003-07-22
    JPH0755400A (en) 1995-03-03
    CA2121100A1 (en) 1994-11-14
    US5388523A (en) 1995-02-14
    DE59406170D1 (en) 1998-07-16
    NO941623D0 (en) 1994-05-03

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