EP0855573B1 - Sabot pour projectile - Google Patents

Sabot pour projectile Download PDF

Info

Publication number
EP0855573B1
EP0855573B1 EP97112896A EP97112896A EP0855573B1 EP 0855573 B1 EP0855573 B1 EP 0855573B1 EP 97112896 A EP97112896 A EP 97112896A EP 97112896 A EP97112896 A EP 97112896A EP 0855573 B1 EP0855573 B1 EP 0855573B1
Authority
EP
European Patent Office
Prior art keywords
sabot
slits
casing
sabot body
segments
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97112896A
Other languages
German (de)
English (en)
Other versions
EP0855573A1 (fr
Inventor
Rudolf Rossmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RWM Schweiz AG
Original Assignee
Oerlikon Contraves Pyrotec AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oerlikon Contraves Pyrotec AG filed Critical Oerlikon Contraves Pyrotec AG
Publication of EP0855573A1 publication Critical patent/EP0855573A1/fr
Application granted granted Critical
Publication of EP0855573B1 publication Critical patent/EP0855573B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • 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
    • 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 sabot for a sub-caliber projectile according to the preamble of claim 1 .
  • both the sabot body and the sabot jacket are divided into segments, with the contact surfaces between the segments of the sabot body on the one hand and between the arrow projectile and the segments the sabot body on the other hand lead to sealing problems.
  • EP-A-0 624 774 discloses a sabot according to the preamble, in which a special segmentation of the sabot body with longitudinal slots is provided to overcome the sealing problems mentioned above, which at least partially have a T-shaped cross section.
  • a gas-tight seal in the form of a sealing cap with an end seal and predetermined breaking points arranged in the area of the inside diameter of the sabot body are provided.
  • the outside diameter of the sabot body decreases from the back to the front, that is, a fictitious envelope surface on the sabot body essentially assumes an approximately conical shape.
  • the circumferential grooves on the sabot body are not formed in the manner of regularly distributed grooves, but in the manner of alternately projecting and projecting individual shoulders or shoulders.
  • This sabot is of relatively complex construction and is therefore rather difficult to manufacture expensive. In addition, it can be at the joint between the sabot jacket and the sabot body gas leaks occur. Furthermore arise when dropping the sabot when shot due to the size of the sabot body relatively large metal splinters.
  • the invention has for its object to propose a sabot of the type mentioned, which does not have the disadvantages mentioned above.
  • 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 diameter of which is small compared to the diameter of the sabot jacket.
  • 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, fiber-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 is screwed to the sabot body 4 , the length of a thread 6 of the arrow projectile 1 being kept small in order to achieve better flight characteristics.
  • the thread 6 protrudes from the sabot body 4 and merges into a smooth shaft 7 of smaller diameter, a shoulder 8 being formed which surrounds the sabot jacket 3 .
  • the sabot jacket 3 has at the rear end a plurality of depressions 9 which serve as predetermined breaking points.
  • six channels 10 are provided which are uniformly distributed around the circumference and taper conically towards the rear and which essentially have a prismatic cross section.
  • the channels 10 are also connected to the surface of the sabot 3 by means of slits 11 , which also taper towards the rear, whereby six segments are formed.
  • With 12 a groove is designated, which is used to attach a hood, not shown.
  • a further thread 13 is provided, by means of which a stabilizing wing, also not shown, can be attached.
  • the sabot body 4 consists of a multi-part hollow body formed with segments provided with circumferential grooves 5 , the outside diameter of which is small compared to the diameter of the sabot jacket 3 .
  • the segments abut one another via so-called separation points 28 and have a toothing in their end region in the inner region which is provided for anchoring the hollow body forming the sabot body with the arrow projectile 1 .
  • An attachment groove 35 is additionally provided in the rear area of the sabot jacket 3 .
  • the actual sabot body 4 consists of a hollow cylinder provided with circumferential grooves 5 , the outside diameter of which is small compared to the diameter of the sabot jacket 3 .
  • the sabot body 4 has an internal thread 20 for screwing to the arrow projectile 1 .
  • six slots 21 are provided which are evenly distributed around the circumference and form six segments and which extend from the front end face 22 to the rear end of the sabot body 4 , where they are delimited by predetermined breaking points 23 . Further variants are provided, which are not shown for the sake of clarity, where these predetermined breaking points 23 are formed on the front end face 22 and / or in the central zone of the slots 21 .
  • the boundary surfaces 24 of the predetermined breaking points 23 lie on an arc 25 , the center of curvature 26 of which lies on the central axis 27 of the sabot body 4 .
  • the sabot body 4 can also be designed with three, four or five slots 21 , the same number of segments being formed in each case.
  • the sabot body 4 has four slots 30 offset by an angle of 90 °.
  • four circular arc-shaped recesses 31 are provided, which extend over the entire length of the sabot body 4 , the center of curvature 32 of the circular arcs lying on an axis of symmetry 33 of the slots 30 .
  • the recesses 31 and only in these grooves 34 are provided which correspond to the circumferential grooves 5 of the embodiment according to FIG. 7 . 8 shows a longitudinal section through the grooves 34 along the line VI-VI of FIG. 10 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Toys (AREA)
  • Testing Of Engines (AREA)
  • Fluid-Damping Devices (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Non-Alcoholic Beverages (AREA)
  • Gasket Seals (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Claims (14)

  1. Sabot pour projectile sous-calibré en forme de flèche,
    avec un corps de sabot (4) dans lequel est fixé le projectile en forme de flèche (1), et
    avec une enveloppe de sabot (3) englobant au moins une partie de l'extrémité avant du projectile en forme de flèche (1) et une partie du corps de sabot (4),
    le corps du sabot (4) ayant la forme d'une pièce creuse en une ou plusieurs parties équipée de rainures périphériques (5, 34) et possédant un diamètre extérieur relativement étroit, plus petit que le diamètre extérieur de l'enveloppe du sabot (3),
    caractérisé en ce que
    l'enveloppe du sabot (3) entoure entièrement le corps du sabot (4) et englobe une partie de l'extrémité arrière du projectile en forme de flèche (1),
    toutes les rainures périphériques (5, 34) du corps de sabot (4) sont conçues de façon identique, et
    des rainures périphériques voisines sont séparées par des saillies conçues de façon identique, de telle sorte que le diamètre extérieur du corps du sabot (4) est essentiellement constant sur toute sa longueur axiale.
  2. Sabot selon la revendication 1
    caractérisé en ce que
    des canaux (10) et des fentes (11) sont prévus dans l'enveloppe du sabot (3).
  3. Sabot selon la revendication 1, l'enveloppe du sabot (3) étant divisée en segments,
    caractérisé en ce que
    dans la partie avant de l'enveloppe du sabot (3) est prévu un certain nombre de canaux (10) répartis de façon régulière sur la périphérie et en forme de cônes effilés vers l'arrière, dont la coupe transversale ressemble beaucoup à un prisme, et en ce que les canaux (10) sont reliés à la surface de l'enveloppe du sabot (3) par des fentes (11) en forme de cônes effilés vers l'arrière, ce qui forme les segments.
  4. Sabot selon la revendication 3,
    caractérisé en ce que
    trois, quatre ou six canaux (10) et fentes (11) sont prévus dans l'enveloppe du sabot (3).
  5. Sabot selon la revendication 1, le corps du sabot (4) étant divisé en segments,
    caractérisé en ce que
    dans le corps du sabot (4) est prévu un certain nombre de fentes (21), réparties de façon régulière sur la périphérie et formant les segments, qui s'étendent depuis la face avant (22) jusqu'à l'extrémité arrière du corps du sabot (4).
  6. Sabot selon la revendication 5,
    caractérisé en ce que
    les fentes (21) sont délimitées, à l'extrémité avant du corps du sabot (4), par des points de rupture (23).
  7. Sabot selon la revendication 5,
    caractérisé en ce que
    les fentes (21) sont délimitées, à l'extrémité arrière du corps du sabot (4), par des points de rupture (23).
  8. Sabot selon la revendication 5,
    caractérisé en ce que
    les fentes (21) sont délimitées, aux deux extrémités du corps du sabot (4), par des points de rupture (23).
  9. Sabot selon la revendication 6 ou 7,
    caractérisé en ce que
    les surfaces de délimitation (24) des points de rupture (23) se trouvent sur un arc de cercle (25) dont le centre de courbure (26) est situé sur l'axe central (27) du corps de sabot (4).
  10. Sabot selon la revendication 5,
    caractérisé en ce que
    dans le corps du sabot (4) sont prévues six fentes (21) placées selon un angle de 60°.
  11. Sabot selon la revendication 5,
    caractérisé en ce que
    dans le corps du sabot (4) sont prévues quatre fentes (30) placées selon un angle de 90°.
  12. Sabot selon la revendication 10 ou 11,
    caractérisé en ce que
    dans la zone des fentes (30) sont prévus des évidements (31) s'étendant sur toute la longueur du corps du sabot (4), leur centre (32) de courbure se trouvant sur un axe de symétrie (33) des fentes (30).
  13. Sabot selon la revendication 12,
    caractérisé en ce que
    des rainures périphériques (34) sont exclusivement conçues dans la zone des évidements (31) s'étendant sur toute la longueur du corps du sabot (4).
  14. Sabot selon la revendication 1,
    caractérisé en ce que
    le corps du sabot (4) est composé d'une pièce d'entraínement, en forme de segment, faite de plusieurs parties et fixée au projectile en forme de flèche (1), les différents segments étant reliés les uns aux autres par des surfaces de séparation (28).
EP97112896A 1997-01-27 1997-07-26 Sabot pour projectile Expired - Lifetime EP0855573B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH167/97 1997-01-27
CH16797 1997-01-27
CH16797 1997-01-27

Publications (2)

Publication Number Publication Date
EP0855573A1 EP0855573A1 (fr) 1998-07-29
EP0855573B1 true EP0855573B1 (fr) 2000-10-11

Family

ID=4180788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97112896A Expired - Lifetime EP0855573B1 (fr) 1997-01-27 1997-07-26 Sabot pour projectile

Country Status (12)

Country Link
US (1) US5902955A (fr)
EP (1) EP0855573B1 (fr)
JP (1) JP3672425B2 (fr)
KR (1) KR100473218B1 (fr)
CA (1) CA2215295C (fr)
CZ (1) CZ285053B6 (fr)
DE (1) DE59702453D1 (fr)
ES (1) ES2152607T3 (fr)
NO (1) NO307435B1 (fr)
PL (1) PL185689B1 (fr)
SG (1) SG79946A1 (fr)
ZA (1) ZA979139B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6324986B1 (en) 1998-11-06 2001-12-04 Oerlikon Contraves Ag Cartridge-case base for a sub-caliber projectile
FR2851038B1 (fr) * 2003-02-10 2005-03-18 Giat Ind Sa Sabot pour projectile sous calibre
PT1912532E (pt) * 2005-08-08 2010-04-14 Gaba International Ag Escova de dentes com cerdas oblíquas e afiadas
SE529752C2 (sv) * 2006-04-20 2007-11-13 Eurenco Bofors Ab Drivkrutladdningar av multiperforerat stavkrut för höghastighetsprojektiler samt framställning därav
US7958829B1 (en) 2006-11-08 2011-06-14 The United States Of America As Represented By The Secretary Of The Army Sabot
US8096292B1 (en) 2010-03-24 2012-01-17 Cold Steel Multiple dart blow gun projectile holder
DE102010045474A1 (de) * 2010-09-16 2012-03-22 Rheinmetall Waffe Munition Gmbh Geschoss mit abwerfbarem Treibspiegel
US9714819B1 (en) * 2013-07-15 2017-07-25 The Boeing Company Stepped sabots for projectiles

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH632086A5 (de) * 1978-08-08 1982-09-15 Oerlikon Buehrle Ag Verfahren zur herstellung eines treibspiegelgeschosses und nach dem verfahren hergestelltes treibspiegelgeschoss.
DE3021914A1 (de) * 1980-06-11 1983-09-08 Deutsch Franz Forsch Inst Unterkalibergeschoss mit treibring
DE3033041C2 (de) * 1980-09-03 1986-04-10 L'Etat Français représenté par le Délégué Général pour l'Armement, Paris Treibkäfig aus Metall und Kunststoff
SE444984B (sv) * 1982-05-28 1986-05-20 Bofors Ab Drivorgan for underkalibrig rotationsstabiliserad projektil
DE4138598A1 (de) * 1991-11-23 1993-05-27 Hilti Ag Kontaktierung eines akkus
DE4139598A1 (de) * 1991-11-30 1993-06-03 Weber Adolf Dipl Ing Vollkalibriges drallstabilisiertes geschoss mit ueberlangem penetrator
EP0624774B1 (fr) * 1993-05-13 1998-06-10 Oerlikon Contraves Pyrotec AG Sabot pour projectile à stabilisation par ailettes
EG21731A (en) * 1993-09-24 2002-02-27 Contraves Pyrotec Ag Releasable sabot for a subcaliber projectile

Also Published As

Publication number Publication date
DE59702453D1 (de) 2000-11-16
JPH10206099A (ja) 1998-08-07
NO973852D0 (no) 1997-08-21
PL185689B1 (pl) 2003-07-31
CA2215295A1 (fr) 1998-07-27
NO307435B1 (no) 2000-04-03
CZ285053B6 (cs) 1999-05-12
KR19980070004A (ko) 1998-10-26
EP0855573A1 (fr) 1998-07-29
CZ282197A3 (cs) 1999-02-17
SG79946A1 (en) 2001-04-17
CA2215295C (fr) 2000-08-22
JP3672425B2 (ja) 2005-07-20
US5902955A (en) 1999-05-11
PL323427A1 (en) 1998-08-03
ZA979139B (en) 1998-05-11
NO973852L (no) 1998-07-28
ES2152607T3 (es) 2001-02-01
KR100473218B1 (ko) 2005-07-11

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