EP0999426A1 - Sabot pour projectile sous-calibre - Google Patents

Sabot pour projectile sous-calibre Download PDF

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Publication number
EP0999426A1
EP0999426A1 EP99119459A EP99119459A EP0999426A1 EP 0999426 A1 EP0999426 A1 EP 0999426A1 EP 99119459 A EP99119459 A EP 99119459A EP 99119459 A EP99119459 A EP 99119459A EP 0999426 A1 EP0999426 A1 EP 0999426A1
Authority
EP
European Patent Office
Prior art keywords
sabot
jacket
arrow
slots
predetermined breaking
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.)
Granted
Application number
EP99119459A
Other languages
German (de)
English (en)
Other versions
EP0999426B1 (fr
Inventor
Rudolf Rossmann
Jakon Burri
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 EP0999426A1 publication Critical patent/EP0999426A1/fr
Application granted granted Critical
Publication of EP0999426B1 publication Critical patent/EP0999426B1/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

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 inside diameter in the acceleration section of the sabot body.
  • the longitudinal slots have a T-shaped cross section in the region 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 anchoring is formed by grooves arranged on the arrow projectile, into which annular projections provided in an axial bore of the sabot body engage.
  • the distance of the first protrusion from the predetermined breaking points and the height of the protrusions are selected such that the deformation at the predetermined breaking points is in the elastic range when the segments are expanded due to assembly.
  • the design of the sabot body as a double-cone frustum proposed with the first embodiment enables a better effect of the propellant gases when firing compared to the sabot of the last-mentioned prior art, and a weight saving compared to the sabot of the first-mentioned prior art.
  • 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 rides 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 engage in one another almost without play in the manner of a toothing.
  • further rides 9 are provided on the arrow floor 1 , by means of which an additional seal is achieved.
  • six tubular channels 10 are provided which are uniformly 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 attaching 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 a circular 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 area 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 those 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.
  • 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.

Landscapes

  • 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)
  • Vibration Dampers (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Dowels (AREA)
EP99119459A 1998-11-06 1999-09-30 Sabot pour projectile sous-calibre Expired - Lifetime EP0999426B1 (fr)

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 true EP0999426A1 (fr) 2000-05-10
EP0999426B1 EP0999426B1 (fr) 2002-11-13

Family

ID=4228979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99119459A Expired - Lifetime EP0999426B1 (fr) 1998-11-06 1999-09-30 Sabot pour projectile sous-calibre

Country Status (8)

Country Link
US (1) US6324986B1 (fr)
EP (1) EP0999426B1 (fr)
AT (1) ATE227837T1 (fr)
CA (1) CA2287021C (fr)
DE (1) DE59903387D1 (fr)
DK (1) DK0999426T3 (fr)
ES (1) ES2185286T3 (fr)
NO (1) NO317767B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007057115A1 (fr) * 2005-11-18 2007-05-24 Rheinmetall Waffe Munition Gmbh Procede pour produire un sabot segmente

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2851038B1 (fr) * 2003-02-10 2005-03-18 Giat Ind Sa Sabot pour projectile sous calibre
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
DE102015110627A1 (de) * 2015-07-01 2017-01-05 Rwm Schweiz Ag Aus einem gezogenen Waffenrohr verschießbares, flügelstabilisiertes Unterkalibergeschoss und Verfahren zu seiner Herstellung
US10400138B2 (en) 2016-06-23 2019-09-03 Arkion Life Sciences, Llc Extended performance bird repellent exterior coating
CN112129166B (zh) * 2020-09-21 2021-12-31 北京理工大学 一种用于轻气炮发射长杆弹体的环型弹托

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927618A (en) * 1971-03-29 1975-12-23 Oerlikon Buehrle Ag Sabot projectile
EP0300373A2 (fr) * 1987-07-20 1989-01-25 Oerlikon-Contraves AG Projectile sous-calibré stabilisé par ailettes
US4833995A (en) * 1985-07-19 1989-05-30 Mauser-Werke Oberndorf Gmbh Fin-stabilized projectile
EP0624774A1 (fr) 1993-05-13 1994-11-17 Oerlikon-Contraves Pyrotec AG Sabot pour projectile à stabilisation par ailettes
EP0643279A1 (fr) * 1993-07-13 1995-03-15 Oerlikon-Contraves Pyrotec AG Réduction de la diminution de la vitesse d'un projectile sous-calibré à ailettes
US5404816A (en) * 1993-09-24 1995-04-11 Oerlikon-Contraves Pyrotec Ag Releasable sabot for a subcaliber projectile
EP0853228A1 (fr) * 1997-01-14 1998-07-15 Oerlikon Contraves Pyrotec AG Projectile et son procédé de fabrication
EP0855573A1 (fr) 1997-01-27 1998-07-29 Oerlikon-Contraves Pyrotec AG Sabot pour projectile

Family Cites Families (4)

* 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.
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
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
US5789699A (en) * 1996-12-16 1998-08-04 Primex Technologies, Inc. Composite ply architecture for sabots

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927618A (en) * 1971-03-29 1975-12-23 Oerlikon Buehrle Ag Sabot projectile
US4833995A (en) * 1985-07-19 1989-05-30 Mauser-Werke Oberndorf Gmbh Fin-stabilized projectile
EP0300373A2 (fr) * 1987-07-20 1989-01-25 Oerlikon-Contraves AG Projectile sous-calibré stabilisé par ailettes
EP0624774A1 (fr) 1993-05-13 1994-11-17 Oerlikon-Contraves Pyrotec AG Sabot pour projectile à stabilisation par ailettes
EP0643279A1 (fr) * 1993-07-13 1995-03-15 Oerlikon-Contraves Pyrotec AG Réduction de la diminution de la vitesse d'un projectile sous-calibré à ailettes
US5404816A (en) * 1993-09-24 1995-04-11 Oerlikon-Contraves Pyrotec Ag Releasable sabot for a subcaliber projectile
EP0853228A1 (fr) * 1997-01-14 1998-07-15 Oerlikon Contraves Pyrotec AG Projectile et son procédé de fabrication
EP0855573A1 (fr) 1997-01-27 1998-07-29 Oerlikon-Contraves Pyrotec AG Sabot pour projectile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007057115A1 (fr) * 2005-11-18 2007-05-24 Rheinmetall Waffe Munition Gmbh Procede pour produire un sabot segmente

Also Published As

Publication number Publication date
ES2185286T3 (es) 2003-04-16
CA2287021C (fr) 2004-10-05
ATE227837T1 (de) 2002-11-15
NO995432L (no) 2000-05-08
DK0999426T3 (da) 2003-03-03
NO995432D0 (no) 1999-11-05
CA2287021A1 (fr) 2000-05-06
EP0999426B1 (fr) 2002-11-13
US6324986B1 (en) 2001-12-04
NO317767B1 (no) 2004-12-13
DE59903387D1 (de) 2002-12-19

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