EP0999426B1 - Sabot for sub-caliber projectile - Google Patents
Sabot for sub-caliber projectile Download PDFInfo
- Publication number
- EP0999426B1 EP0999426B1 EP99119459A EP99119459A EP0999426B1 EP 0999426 B1 EP0999426 B1 EP 0999426B1 EP 99119459 A EP99119459 A EP 99119459A EP 99119459 A EP99119459 A EP 99119459A EP 0999426 B1 EP0999426 B1 EP 0999426B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sabot
- arrow
- slots
- casing
- 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
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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
- F42B14/061—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
Definitions
- the invention relates to a sabot for a lower-caliber floor in the form of an arrow floor, with a sabot body in which the arrow is anchored, and with a sabot jacket that partially covers the front and rear ends of the arrow floor and at least partially comprises the sabot body, the sabot body divided into segments by slots, and the slots at one end of the sabot body are limited by predetermined breaking points.
- EP-A-0 624 774 discloses a sabot according to the preamble, in which the sabot body has an area not encompassed by the sabot jacket with a circumferential groove for fastening a cartridge case.
- longitudinal slots and predetermined breaking points are provided in the sabot body, the predetermined breaking points being arranged in the region of the inner diameter in the acceleration section of the sabot body.
- the longitudinal slots have a T-shaped cross section in the area of the circumferential groove with two shoulders, which serve as additional sealing surfaces for the material of the sabot jacket located in the longitudinal slots.
- the acceleration section of the sabot body is partially frustoconical in shape with a jacket surface that extends toward the front.
- the sabot jacket has a sealing cap and end seal designed to interact with the acceleration section of the sabot body.
- the sabot body is completely surrounded by the sabot jacket, the sabot jacket partially also encompassing the rear end of the arrow projectile.
- the sabot body has the shape of a hollow cylinder provided with circumferential grooves, the outside pressure meter of which is small compared to the diameter of the sabot jacket.
- the arrow projectile is in the form of a screw connection anchored in the sabot body, the thread of the screw connection as potential weakness in terms of tightness must be considered. It is therefore the object of the invention to propose a sabot of the type mentioned at the outset, who does not have this disadvantage.
- the training proposed with the first execution of the sabot body as a double truncated cone enables compared to the sabot of the last-mentioned prior art a better effect of the propellant gases at launch, and compared to the sabot of the first mentioned level of Technique a weight saving.
- 1 denotes an arrow projectile and 2 denotes a sabot arranged on the arrow projectile 1 .
- the sabot 2 consists of a sabot jacket 3 made of a high-temperature, filler-reinforced, thermoplastic and a sabot body 4 made of light metal.
- the sabot body 4 is completely surrounded by the sabot jacket 3 , the sabot jacket 3 engaging in circumferential grooves 5 of the sabot body 4 and comprising part of the front and rear ends of the arrow projectile 1 .
- the arrow projectile 1 has grooves 6 , in which annular projections 8 provided in an axial bore 7 of the sabot body 4 engage.
- the grooves 6 and the ring-shaped projections 8 have the same trapezoidal cross-section and interlock almost without play in the manner of a toothing.
- further grooves 9 are provided in the arrow floor 1 , by means of which an additional seal is achieved.
- tubular channels 10 which are evenly distributed around the circumference and taper conically towards the rear and which are also connected to the surface of the sabot jacket 3 via slots 11 tapering conically towards the rear.
- the six channels 10 and slots 11 form six segments and six predetermined breaking points 12 , which are predetermined locally by grooves 13 arranged in the channels 10 .
- six spherical segment-like depressions 14 are provided with further grooves 15 , whereby further predetermined breaking points 16 are formed.
- the front end of the arrow floor 1 can, as not shown and described further, be covered with a hood attached to the sabot jacket 3 , for which purpose a circumferential groove 17 is provided.
- a thread 18 is arranged, by means of which a stabilizing wing, also not shown, can be attached.
- a circumferential groove for the attachment of a cartridge case is designated.
- the sabot body 4 is composed of two unevenly long truncated cones with a common large diameter.
- the sabot body 4 there are six slots 20 which are evenly distributed around the circumference and form six segments and which extend from the rear end face 21 to the front end of the sabot body 4 , where they are delimited by predetermined breaking points 22 .
- the boundary surfaces 23 of the predetermined breaking points 22 lie on an arc 24 , the center of curvature 25 of which lies on the central axis 26 of the sabot body 4 .
- the predetermined breaking points 22 lie in the region of the smaller diameter of the shorter truncated cone, the shorter truncated cone facing the front end of the arrow projectile 1 .
- the distance between the predetermined breaking points 22 from the first annular projection 8 and the height of the projections 8 are selected such that the deformation at the predetermined breaking points 22 is in the elastic range when the segments are expanded due to assembly.
- the sabot 42 consists of a sabot jacket 43 made of a high-temperature, filler-reinforced thermoplastic and a sabot body 44 made of light metal.
- the sabot jacket 43 encompasses the sabot body 44 with the exception of an area in which a circumferential groove 45 is provided for fastening a cartridge case, and engages in circumferential grooves 46, 47, 48 of the sabot body 44 .
- the sabot jacket 43 further comprises a larger part of the front and a smaller part of the rear end of the arrow projectile 41 .
- the arrow projectile 41 has grooves 6 ' , similar to that described above with reference to FIGS. 1 to 5 , into which annular projections 8' provided in an axial bore 49 of the sabot body 44 engage.
- Slots 20 'and predetermined breaking points 22' wherein the faces with the predetermined breaking points 22 'provided end of the sabot body 44 to the front end of the arrow projectile 42nd
- In the front part of the sabot casing 43 are four evenly distributed on the periphery, approximately a V-shaped cross-section recesses 50 and four in the longitudinal direction in the symmetry axes of the recesses 50 extending grooves 51 are provided, are by means of which predetermined breaking points 52 of the sabot casing 43 predetermined locally. With 53 a circumferential groove is designated, which is used to attach a hood, not shown.
- a circumferential groove is designated, which is used to attach a hood, not shown.
- the sabot jacket 3 and / or the sabot body 4 of the first embodiment with three, four or five channels 10 and slots 11 or slots 20 , so that costs are saved.
- the version with six channels 10 and slots 11 and 20 has a smaller mass and leads to fewer separation problems after firing. It is also within the scope of the invention to choose a different number and distribution of the recesses 50 and grooves 51 or slots 20 ' on the circumference of the sabot jacket 43 and sabot body 44 of the second embodiment.
- the sabot body 4 of the first embodiment can also consist of a high-temperature, filler-reinforced thermoplastic, in particular fiber-reinforced, plastic.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Prostheses (AREA)
- Toys (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Vibration Dampers (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
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Abstract
Description
Die Erfindung betrifft einen Treibspiegel für ein Unterkalibergeschoss in Form eines Pfeilgeschosses, mit einem Treibspiegelkörper, in dem das Pfeilgeschoss verankert ist, und mit einem Treibspiegelmantel, der teilweise das vordere und hintere Ende des Pfeilgeschosses und mindestens teilweise den Treibspiegelkörper umfasst, wobei der Treibspiegelkörper durch Schlitze in Segmente unterteilt ist, und die Schlitze an einem Ende des Treibspiegelkörpers durch Sollbruchstellen begrenzt sind.The invention relates to a sabot for a lower-caliber floor in the form of an arrow floor, with a sabot body in which the arrow is anchored, and with a sabot jacket that partially covers the front and rear ends of the arrow floor and at least partially comprises the sabot body, the sabot body divided into segments by slots, and the slots at one end of the sabot body are limited by predetermined breaking points.
Bei derartigen Treibspiegeln treten oft Probleme auf, die in der Schwierigkeit der Abdichtung zwischen Treibspiegel und Unterkalibergeschoss bzw. Pfeilgeschoss gegen die beim Abschuss entstehenden Treibgase hohen Druckes liegen.Problems of this kind often arise with such sabotages because of the difficulty of sealing between sabot and lower caliber floor or arrow floor against the high-pressure propellant gases produced during the launch.
Mit der EP-A- 0 624 774 ist ein Treibspiegel gemäss Oberbegriff bekannt geworden, bei welchem der Treibspiegelkörper einen nicht vom Treibspiegelmantel umfassten Bereich mit einer Umfangsnut für die Befestigung einer Patronenhülse aufweist. Zur Ueberwindung der vorstehend genannten Dichtungsprobleme sind im Treibspiegelkörper Längsschlitze und Sollbruchstellen vorgesehen, wobei die Sollbruchstellen im Bereich des Innendurchmessers bei der Beschleunigungspartie des Treibspiegelkörpers angeordnet sind. Die Längsschlitze weisen im Bereich der Umfangsnut einen T-förmigen Querschnitt mit zwei Schultern auf, die als zusätzliche Dichtflächen für das in den Längsschlitzen befindliche Material des Treibspiegelmantels dienen. Die Beschleunigungspartie des Treibspiegelkörpers ist teilweise kegelstumpfförmig mit nach vorne ausweitender Mantelfläche ausgebildet. Ferner weist der Treibspiegelmantel eine mit der Beschleunigungspartie des Treibspiegelkörpers zusammenwirkend ausgebildete Dichtkappe und Abschlussdichtung auf. EP-A-0 624 774 discloses a sabot according to the preamble, in which the sabot body has an area not encompassed by the sabot jacket with a circumferential groove for fastening a cartridge case. In order to overcome the sealing problems mentioned above, longitudinal slots and predetermined breaking points are provided in the sabot body, the predetermined breaking points being arranged in the region of the inner diameter in the acceleration section of the sabot body. The longitudinal slots have a T-shaped cross section in the area of the circumferential groove with two shoulders, which serve as additional sealing surfaces for the material of the sabot jacket located in the longitudinal slots. The acceleration section of the sabot body is partially frustoconical in shape with a jacket surface that extends toward the front. Furthermore, the sabot jacket has a sealing cap and end seal designed to interact with the acceleration section of the sabot body.
Mit einer durch die EP-A-0 855 573 bekannt gewordenen Weiterentwicklung des vorstehend beschriebenen Treibspiegels werden weitere Verbesserungen bezüglich der Dichtigkeit, der Gewichtsverminderung und der Splitterbildung beim Abschuss, sowie ein einfacherer Aufbau erzielt. Hierbei ist der Treibspiegelkörper vollständig vom Treibspiegelmantel umgeben, wobei der Treibspiegelmantel teilweise auch das hintere Ende des Pfeilgeschosses umfasst. Der Treibspiegelkörper weist die Form eines mit Umfangsrillen versehenen Hohlzylinders auf, dessen Aussendruckmesser klein gegen den Durchmesser des Treibspiegelmantels ist.With a further development of the sabot described above, which has become known from EP-A-0 855 573 , further improvements in terms of tightness, weight reduction and splinter formation during firing as well as a simpler construction are achieved. Here, the sabot body is completely surrounded by the sabot jacket, the sabot jacket partially also encompassing the rear end of the arrow projectile. The sabot body has the shape of a hollow cylinder provided with circumferential grooves, the outside pressure meter of which is small compared to the diameter of the sabot jacket.
Bei vorstehend beschriebenen Treibspiegeln ist das Pfeilgeschoss in Form einer Verschraubung im Treibspiegelkörper verankert, wobei das Gewinde der Verschraubung als potentielle Schwachstelle in bezug auf die Dichtigkeit angesehen werden muss. Es ist daher Aufgabe der Erfindung einen Treibspiegel der eingangs genannten Art vorzuschlagen, der diesen Nachteil nicht aufweist.In the case of the sabot described above, the arrow projectile is in the form of a screw connection anchored in the sabot body, the thread of the screw connection as potential weakness in terms of tightness must be considered. It is therefore the object of the invention to propose a sabot of the type mentioned at the outset, who does not have this disadvantage.
Diese Aufgabe wird durch die im Patentanspruch 1 angegebene Erfindung gelöst. Hierbei
wird die Verankerung durch am Pfeilgeschoss angeordnete Rillen, in welche in einer
Axialbohrung des Treibspiegelkörpers vorgesehene ringförmige Vorsprünge eingreifen,
gebildet. Der Abstand des ersten Vorsprungs von den Sollbruchstellen und die Höhe der
Vorsprünge sind derart gewählt, dass die Verformung an den Sollbruchstellen bei Montagebedingter
Spreizung der Segmente im elastischen Bereich liegt. Die mit der Erfindung
erzielten Vorteile sind darin zu sehen, dass mit der vorgeschlagenen Verankerung die
Dichtigkeit weiter verbessert wird. Die mit der ersten Ausführung vorgeschlagene Ausbildung
des Treibspiegelkörpers als Doppelkegelstumpf ermöglicht gegenüber dem Treibspiegel
des zuletzt genannten Standes der Technik eine bessere Wirkung der Treibgase
beim Abschuss, und gegenüber dem Treibspiegel des zuerst genannten Standes der
Technik eine Gewichtserspamis.This object is achieved by the invention specified in
Im folgenden wird die Erfndung anhand zweier Ausführungsbeispiele im Zusammenhang mit der Zeichnung näher erläutert. Es zeigen:
- Fig. 1
- einen Längsschnitt entlang der Linie I-I in Fig. 4 durch den erfindungsgemässen Treibspiegel mit einem Pfeilgeschoss, in einer ersten Ausführung,
- Fig. 2
- einen Querschnitt durch den Treibspiegel entlang der Linie III-III in Fig. 1 ,
- Fig. 3
- eine Ansicht des Treibspiegels in Pfeilrichtung A in Fig. 1 ,
- Fig. 4
- eine Ansicht des Treibspiegels in Pfeilrichtung B in Fig. 3,
- Fig. 5
- eine Ansicht des Treibspiegels in Pfeilrichtung C in Fig. 3,
- Fig. 6
- einen Längsschnitt durch einen Treibspiegelkörper entlang der Linie VI-VI in Fig. 7 , in grösserem Massstab,
- Fig. 7
- eine Ansicht des Treibspiegelkörpers in Pfeilrichtung D In Fig. 6,
- Fig. 8
- einen Längsschnitt entlang der Linie VIII-VIII in Fig. 9 durch den Treibspiegel mit einem Pfeilgeschoss, in einer zweiten Ausführung,
- Fig. 9
- einen Querschnitt durch den Treibpiegel entlang der Linie IX-IX in Fig. 8,
- Fig. 10
- eine Ansicht des Treibspiegels in Pfeilrichtung E in Fig. 8, und
- Fig. 11
- eine Ansicht des Treibspiegels in Pfeilrichtung F in Fig. 10 .
- Fig. 1
- 3 shows a longitudinal section along line II in FIG. 4 through the sabot according to the invention with an arrow projectile, in a first embodiment,
- Fig. 2
- 2 shows a cross section through the sabot along the line III-III in FIG. 1 ,
- Fig. 3
- 2 shows a view of the sabot in the direction of arrow A in FIG. 1 ,
- Fig. 4
- 3 shows a view of the sabot in the direction of arrow B in FIG. 3,
- Fig. 5
- 3 shows a view of the sabot in the direction of arrow C in FIG. 3,
- Fig. 6
- 4 shows a longitudinal section through a sabot body along the line VI-VI in FIG. 7 , on a larger scale,
- Fig. 7
- 6 shows a view of the sabot body in the direction of arrow D in FIG. 6,
- Fig. 8
- 9 shows a longitudinal section along the line VIII-VIII in FIG. 9 through the sabot with an arrow projectile, in a second embodiment,
- Fig. 9
- 3 shows a cross section through the sabot along the line IX-IX in FIG. 8,
- Fig. 10
- a view of the sabot in the direction of arrow E in Fig. 8, and
- Fig. 11
- a view of the sabot in the direction of arrow F in Fig. 10th
In den Fig. 1 bis 5 ist mit 1 ein Pfeilgeschoss und mit 2 ein auf dem Pfeilgeschoss 1 angeordneter
Treibspiegel bezeichnet. Der Treibspiegel 2 besteht aus einem Treibspiegelmantel
3 aus einem hochwarmfesten, Füllstoffverstärkten, thermoplastischen Kunststoff
und einem Treibspiegelkörper 4 aus Leichtmetall. Der Treibspiegelkörper 4 ist vollständig
vom Treibspiegelmantel 3 umgeben, wobei der Treibspiegelmantel 3 in Umfangsrillen 5
des Treibspiegelkörpers 4 eingreift und einen Teil des vorderen und hinteren Endes des
Pfeilgeschosses 1 umfasst. Das Pfeilgeschoss 1 weist Rillen 6 auf, in welche in einer
Axialbohrung 7 des Treibspiegelkörpers 4 vorgesehene ringförmige Vorsprünge 8 eingreifen.
Die Rillen 6 und die ringförmigen Vorsprünge 8 weisen den gleichen trapezförmigen
Querschnitt auf und greifen nach Art einer Verzahnung annähernd spielfrei ineinander.
Im Bereich des vorderen Endes des Treibspiegelkörpers 4 sind im Pfeilgeschoss 1
weitere Rillen 9 vorgesehen, mittels welchen eine zusätzliche Abdichtung erreicht wird. 1 to 5 , 1 denotes an arrow projectile and 2 denotes a sabot arranged on the
Im vorderen Teil des Treibspiegelmantels 3 sind sechs gleichmässig am Umfang verteilte,
sich nach hinten konisch verjüngende rohrförmige Kanäle 10 vorgesehen, die über
sich ebenfalls nach hinten konisch verjüngende Schlitze 11 mit der Oberfläche des Treibspiegelmantels
3 verbunden sind. Durch die sechs Kanäle 10 und Schlitze 11 werden
sechs Segmente und sechs Sollbruchstellen 12 gebildet, die durch in den Kanälen 10
angeordnete Riefen 13 örtlich vorbestimmt sind. Am hinteren Teil des Treibspiegelmantels
3 sind sechs kugelsegmentartige Vertiefungen 14 mit weiteren Riefen 15 vorgesehen,
wodurch weitere Sollbruchstellen 16 gebildet werden.In the front part of the
Das vordere Ende des Pfeilgeschosses 1 kann wie nicht weiter dargestellt und beschrieben,
mit einer am Treibspiegelmantel 3 befestigten Haube abgedeckt werden, zu welchem
Zweck eine Umfangsrille 17 vorgesehen ist. Am hinteren Ende des Pfeilgeschosses
1 ist ein Gewinde 18 angeordnet, mittels welchem ein ebenfalls nicht dargestellter
Stabilisierungsflügel befestigt werden kann. Mit 19 ist eine Umfangsnut für die Befestigung
einer Patronenhülse bezeichnet.The front end of the
Gemäss den Fig. 6 und 7 setzt sich der Treibspiegelkörper 4 aus zwei ungleich langen
Kegelstümpfen mit gemeinsamem grossen Durchmesser zusammen. Im Treibspiegelkörper
4 sind sechs gleichmässig am Umfang verteilte, sechs Segmente bildende Schlitze
20 vorgesehen, die sich von der hinteren Stirnseite 21 bis zum vorderen Ende des
Treibspiegelkörpers 4 erstrecken, wo sie von Sollbruchstellen 22 begrenzt werden. Die
Begrenzungsflächen 23 der Sollbruchstellen 22 liegen auf einem Kreisbogen 24, dessen
Krümmungsmittelpunkt 25 auf der Mittelachse 26 des Treibspiegelkörpers 4 liegt. Die
Sollbruchstellen 22 liegen im Bereich des kleineren Durchmessers des kürzeren Kegelstumpfes,
wobei der kürzere Kegelstumpf dem vorderen Ende des Pfeilgeschosses 1
zugewandt ist. Der Abstand der Sollbruchstellen 22 vom ersten ringförmigen Vorsprung 8
und die Höhe der Vorsprünge 8 sind derart gewählt, dass die Verformung an den Sollbruchstellen
22 bei montagebedingter Spreizung der Segmente im elastischen Bereich
liegt. 6 and 7 , the
In den Fig. 8 bis 11 ist mit 41 ein Pfeilgeschoss und mit 42 ein auf dem Pfeilgeschoss 41
angeordneter Treibspiegel bezeichnet. Der Treibspiegel 42 besteht aus einem Treibspiegelmantel
43 aus einem hochwarmfesten, Füllstoffverstärkten thermoplastischen Kunststoff
und einem Treibspiegelkörper 44 aus Leichtmetall. Der Treibspiegelmantel 43 umfasst
den Treibspiegelkörper 44 mit Ausnahme eines Bereiches, in welchem eine Umfangsnut
45 für die Befestigung einer Patronenhülse vorgesehen ist, und greift dabei in
Umfangsrillen 46,47,48 des Treibspiegelkörpers 44 ein. Der Treibspiegelmantel 43 umfasst
ferner einen grösseren Teil des vorderen und einen kleineren Teil des hinteren Endes
des Pfeilgeschosses 41. Das Pfeilgeschoss 41 weist ähnlich wie vorstehend anhand
der Fig. 1 bis 5 beschrieben Rillen 6' auf, in welche in einer Axialbohrung 49 des Treibspiegelkörpers
44 vorgesehene ringförmige Vorsprünge 8' eingreifen. Am Treibspiegelkörper
44 sind ähnlich wie anhand der Fig. 6 und 7 beschrieben, Schlitze 20' und Sollbruchstellen
22' vorgesehen, wobei das mit den Sollbruchstellen 22' versehene Ende des
Treibspiegelkörpers 44 dem vorderen Ende des Pfeilgeschosses 42 zugewandt ist.
Im vorderen Teil des Treibspiegelmantels 43 sind vier gleichmässig am Umfang verteilte,
annähernd einen v-förmigen Querschnitt aufweisende Ausnehmungen 50 und vier in
Längsrichtung in Symmetrieachsen der Ausnehmungen 50 verlaufende Nuten 51 vorgesehen,
durch welche Sollbruchstellen 52 des Treibspiegelmantels 43 örtlich vorbestimmt
sind. Mit 53 ist eine Umfangsrille bezeichnet, die der Befestigung einer nicht dargestellten
Haube dient. Am hinteren Ende des Pfeilgeschosses 41 ist ein Gewinde 54 vorgesehen,
mittels welchem ein ebenfalls nicht dargestellter Stabilisierungsflügel befestigt werden
kann. 8 to 11 , 41 denotes an arrow projectile and 42 denotes a sabot arranged on the
Es ist auch möglich den Treibspiegelmantel 3 und/oder den Treibspiegelkörper 4 der ersten
Ausführung mit drei, vier oder fünf Kanälen 10 und Schlitzen 11 bzw. Schlitzen 20
auszuführen, so dass Kosten gespart werden. Andererseits weist die Ausführung mit
sechs Kanälen 10 und Schlitzen 11 bzw. 20 eine kleinere Masse auf und führt zu weniger
Trennstörungen nach dem Abschuss. Ebenso liegt es im Rahmen der Erfindung am
Treibspiegelmantel 43 und Treibspiegelkörper 44 der zweiten Ausführung eine andere
Anzahl und Verteilung der Ausnehmungen 50 und Nuten 51 bzw. Schlitze 20' am Umfang
zu wählen. It is also possible to design the
Anstelle aus Leichtmetall, kann der Treibspiegelkörper 4 der ersten Ausführung auch aus
einem hochwarmfesten, Füllstoffverstärkten thermoplastischen, insbesondere faserverstärkten,
Kunststoff bestehen.Instead of light metal, the
Claims (15)
- Sabot for a sub-calibre projectile in the form of an arrow-head projectile, having a sabot body (4, 44) in which the arrow-head projectile (1, 41) is anchored, and having a sabot casing (3, 43) which encompasses part of the front and rear extremity of the arrow-head projectile (1, 41) and at least part of the sabot body (4, 44), the sabot body (4, 44) being subdivided by slots (20, 20') into segments, and the slots (20, 20') being delimited at one extremity of the sabot body (4, 44) by predetermined breaking points (22, 22'),
characterised in that
the anchorage is constituted by flutes (6, 6') which are disposed on the arrow-head projectile (1, 41) and into which annular projections (8, 8') provided in an axial bore (7, 49) on the sabot body (4, 44) engage, the distance of the first projection from the predetermined breaking points (22, 22') and the height of the projections being chosen so that the deformation at the predetermined breaking points (22, 22') is within the elastic range in the event that assembly-related factors cause splaying out of the segments. - Sabot according to claim 1,
characterised in that
the flutes (6, 6') disposed on the arrow-head projectile (1, 41) and the annular projections (8, 8') provided in the axial bore (7, 49) of the sabot body (4, 44) have an identical trapezoidal cross-section and mesh with one another with almost no freeplay. - Sabot according to claim 1, where the sabot body (4) is completely surrounded by the sabot casing (3),
characterised in that
the sabot body (4) is made up of two truncated cones of different lengths and with a common large diameter and the predetermined breaking points (22) are disposed in the region of the smaller diameter of the shorter truncated cone. - Sabot according to claim 3,
characterised in that
the shorter truncated cone of the sabot body (4) having the predetermined breaking points (22) is situated facing the front extremity of the arrow-head projectile (1). - Sabot according to claim 3,
characterised in that provided in the front part of the sabot casing (3) are a number of tubular channels (10) which are uniformly distributed around the circumference and taper conically towards the rear, which are joined to the surface of the sabot casing (3) via slots (11) which taper conically towards the rear. - Sabot according to claim 5,
characterised in that
six channels (10) and slots (11) are provided in the sabot casing (3). - Sabot according to claim 5,
characterised in that
four channels (10) and slots (11) are provided in the sabot casing (3). - Sabot according to claim 3,
characterised in that
six slots (20) are provided in the sabot body (4). - Sabot according to claim 3,
characterised in that
four slots (20) are provided in the sabot body (4). - Sabot according to claim 3,
characterised in that
additional flutes (9) are provided on the arrow-head projectile (1), in the region of the front extremity of the sabot body (4). - Sabot according to claim 3,
characterised in that
the sabot body (4) is made from a high-temperature, filler-reinforced thermoplastic. - Sabot according to claim 1, where the sabot body (44) incorporates a portion not contained by the sabot casing (43) and having a circumferential groove (45) for the attachment of a cartridge case,
characterised in that
the sabot body (44) is disposed on the arrow-head projectile (41) in such a manner that one end of the sabot body (44), incorporating the predetermined breaking points (22'), is situated facing the front extremity of the arrow-head projectile (41). - Sabot according to claim 12,
characterised in that
provided in the front part of the sabot casing (43) are four recesses (50) uniformly distributed around the circumference and four grooves (51) running in the longitudinal direction. - Sabot according to claim 13,
characterised in that
the recesses (50) have more or less a V-shaped cross-section. - Sabot according to claim 13,
characterised in that
the grooves (51) are arranged so as to run in axes of symmetry of the recesses (50).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH223398 | 1998-11-06 | ||
| CH223398 | 1998-11-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0999426A1 EP0999426A1 (en) | 2000-05-10 |
| EP0999426B1 true EP0999426B1 (en) | 2002-11-13 |
Family
ID=4228979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99119459A Expired - Lifetime EP0999426B1 (en) | 1998-11-06 | 1999-09-30 | Sabot for sub-caliber projectile |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6324986B1 (en) |
| EP (1) | EP0999426B1 (en) |
| AT (1) | ATE227837T1 (en) |
| CA (1) | CA2287021C (en) |
| DE (1) | DE59903387D1 (en) |
| DK (1) | DK0999426T3 (en) |
| ES (1) | ES2185286T3 (en) |
| NO (1) | NO317767B1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2851038B1 (en) * | 2003-02-10 | 2005-03-18 | Giat Ind Sa | SABOT FOR PROJECTILE UNDER SIZE |
| 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 |
| US9714819B1 (en) * | 2013-07-15 | 2017-07-25 | The Boeing Company | Stepped sabots for projectiles |
| DE102015110627A1 (en) * | 2015-07-01 | 2017-01-05 | Rwm Schweiz Ag | From a drawn gun barrel moldable, wing stabilized subcaliber bullet and method for its production |
| US10400138B2 (en) | 2016-06-23 | 2019-09-03 | Arkion Life Sciences, Llc | Extended performance bird repellent exterior coating |
| CN112129166B (en) * | 2020-09-21 | 2021-12-31 | 北京理工大学 | Ring-shaped bullet holder for launching long-rod bullet body of light gas gun |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3927618A (en) | 1971-03-29 | 1975-12-23 | Oerlikon Buehrle Ag | Sabot projectile |
| 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 |
| US4535698A (en) * | 1983-11-04 | 1985-08-20 | The United States Of America As Represented By The Secretary Of The Army | Pyrotechnic nose cap for practice munitions |
| DE3525854A1 (en) | 1985-07-19 | 1989-01-05 | Mauser Werke Oberndorf | WING-STABILIZED ARROW BULLET |
| EP0300373B1 (en) | 1987-07-20 | 1992-06-17 | Oerlikon-Contraves AG | Fin stabilised subcalibre projectile |
| EP0624774B1 (en) | 1993-05-13 | 1998-06-10 | Oerlikon Contraves Pyrotec AG | Sabot for a finstabilized projectile |
| US5413049A (en) | 1993-07-13 | 1995-05-09 | Pacific Armatechnica Corporation | Reduction of velocity decay of fin stabilized subcaliber projectiles |
| EG21731A (en) | 1993-09-24 | 2002-02-27 | Contraves Pyrotec Ag | Releasable sabot for a subcaliber projectile |
| US5789699A (en) * | 1996-12-16 | 1998-08-04 | Primex Technologies, Inc. | Composite ply architecture for sabots |
| DE59706552D1 (en) | 1997-01-14 | 2002-04-11 | Contraves Pyrotec Ag | Projectile and method for its manufacture |
| ES2152607T3 (en) | 1997-01-27 | 2001-02-01 | Contraves Pyrotec Ag | PROPULSING CAP FOR SUBCALIBRATED PROJECT. |
-
1999
- 1999-09-27 US US09/406,052 patent/US6324986B1/en not_active Expired - Lifetime
- 1999-09-30 EP EP99119459A patent/EP0999426B1/en not_active Expired - Lifetime
- 1999-09-30 DE DE59903387T patent/DE59903387D1/en not_active Expired - Lifetime
- 1999-09-30 ES ES99119459T patent/ES2185286T3/en not_active Expired - Lifetime
- 1999-09-30 AT AT99119459T patent/ATE227837T1/en not_active IP Right Cessation
- 1999-09-30 DK DK99119459T patent/DK0999426T3/en active
- 1999-10-21 CA CA002287021A patent/CA2287021C/en not_active Expired - Fee Related
- 1999-11-05 NO NO19995432A patent/NO317767B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CA2287021C (en) | 2004-10-05 |
| NO995432D0 (en) | 1999-11-05 |
| CA2287021A1 (en) | 2000-05-06 |
| US6324986B1 (en) | 2001-12-04 |
| NO995432L (en) | 2000-05-08 |
| DK0999426T3 (en) | 2003-03-03 |
| EP0999426A1 (en) | 2000-05-10 |
| ATE227837T1 (en) | 2002-11-15 |
| DE59903387D1 (en) | 2002-12-19 |
| NO317767B1 (en) | 2004-12-13 |
| ES2185286T3 (en) | 2003-04-16 |
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