EP0288721B1 - Constitution d'une zone de rupture à la partie arrière du sabot d'un projectile à calibre réduit - Google Patents

Constitution d'une zone de rupture à la partie arrière du sabot d'un projectile à calibre réduit Download PDF

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Publication number
EP0288721B1
EP0288721B1 EP88104229A EP88104229A EP0288721B1 EP 0288721 B1 EP0288721 B1 EP 0288721B1 EP 88104229 A EP88104229 A EP 88104229A EP 88104229 A EP88104229 A EP 88104229A EP 0288721 B1 EP0288721 B1 EP 0288721B1
Authority
EP
European Patent Office
Prior art keywords
sabot
projectile
provision
breaking line
projectile body
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
EP88104229A
Other languages
German (de)
English (en)
Other versions
EP0288721A1 (fr
Inventor
Jakob Burri
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle 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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Publication of EP0288721A1 publication Critical patent/EP0288721A1/fr
Application granted granted Critical
Publication of EP0288721B1 publication Critical patent/EP0288721B1/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
    • F42B14/064—Sabots enclosing the rear end of a kinetic energy projectile, i.e. having a closed disk shaped obturator base and petals extending forward from said base

Definitions

  • the invention relates to the formation of a predetermined breaking point on the rear part of a sabot according to the preamble of the claim.
  • EP-A-0 131 073 discloses a detaching device for a nozzle-driven projectile, in which the projectile or a missile is held over a fusible connecting part.
  • the fusible connecting part has an annular part which is weakened by a circumferential groove and in which a multiplicity of through openings for the hot exhaust gases are additionally uniformly provided on the circumference.
  • the exact detachment of the rocket is now determined by the choice of the meltable material for the connecting part and the dimensioning of the groove and the through openings, ie detachment takes place via the melting effect of the hot exhaust gases.
  • the object which is to be achieved with the present invention consists in the creation or formation of a predetermined breaking point which breaks reliably in the desired manner and at the desired point in time without influencing the flight stability of the projectile core.
  • this predetermined breaking point is characterized by claim 1.
  • the sabot projectile has a projectile body 10, a sabot rear part 11 and a sabot jacket 12.
  • a ballistic hood 13 is fastened on the projectile body 10.
  • a hard metal alloy preferably a tungsten alloy
  • the sabot rear part 11 is preferably made of light metal and the sabot jacket 12 made of plastic.
  • the sabot jacket 12 usually consists of three segments which are connected to one another with the aid of suitable predetermined breaking points 14. 1 shows only a single predetermined breaking point 14.
  • the sabot jacket 12 has cutouts 15 and a guide band 16.
  • the projectile body 10 has two circumferential grooves 17 which are used to fasten the sabot rear part 11 to the projectile body 10.
  • This sabot rear part 11 has six tongues 18 which protrude with projections 25 into the circumferential grooves 17 of the projectile body 10.
  • the sabot rear part 11 can separate from the projectile body 10 when the sabot projectile emerges from the weapon barrel, there is an inner groove 29 on the sabot rear part 11, through which a predetermined breaking point is formed, at which the tongues 18 can be broken off from the sabot rear part 11.
  • the six tongues 18 are separated from one another by six slots 30. Thanks to the groove 29 shown in FIG. 2 and thanks to the slots 30 between the tongues 18, after the sabot projectile has left the weapon barrel, the six tongues 18 can bend as far outwards under the effect of the centrifugal force generated by the swirl, that they break off and therefore not the projectile body 10 hold more with their cams 25 in the circumferential grooves 17.
  • a further, outer circumferential groove 31 is provided on the sabot rear part 11, the wall thickness between the two grooves 29 and 31 being chosen to be just thick enough that the tongues 18 can be easily broken out by the centrifugal force.
  • a disc-shaped recess 32 is provided on each tongue 18, see also FIG. 3.
  • two rectangular recesses 33 are pressed into the base of the disk-shaped recesses 32, whereby the cams 25 are formed, by which the projectile body 10 is held in the sabot rear part 11, since these cams 25 into the Protrude grooves 17 into it.
  • the sabot rear part 11 also has a further circumferential groove 34, which is used for fastening a cartridge case, not shown in the drawing.
  • the sabot rear part 11 has a circumferential sealing groove 19 and a circumferential retaining groove 26.
  • This circumferential sealing groove has mutually parallel side walls 21, 22, these mutually parallel side walls 21, 22 being inclined forward by an angle of approximately 75 ° with respect to the longitudinal axis of the weapon.
  • the circumferential retaining groove has two side walls 24 and 28, of which one side wall 24 is inclined rearward by 75 ° and the other side wall 28 is inclined forward by 75 °.
  • the circumferential retaining groove 26 and the circumferential sealing groove 19 are separated from one another by a rib 23.
  • the predetermined breaking point between the two circumferential grooves 29 and 31 is now supplemented by bores 40.
  • These holes 40 are shown in all Figures 1-3. Either there can be a single hole 40 per tongue 18 near one of the two slots 30, or there can be two holes 40 per tongue 18, one hole 40 near one slot 30 and the other Bore 40 is located near the other slot 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Toys (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
  • Road Signs Or Road Markings (AREA)

Claims (2)

  1. Constitution d'une zone de rupture à la partie arrière d'un sabot d'un projectile à calibre réduit comprenant :
    - un corps de projectile (10) ou organe de pénétration,
    - une partie arrière de sabot ( 11) dans laquelle est accroché le corps de projectile (10),
    - une enveloppe de sabot (12) entourant le corps de projectile (10),
    - un nombre de languettes (18) fixées à la partie arrière (11) du sabot par des zones de rupture de consigne (29, 31), pour accrocher le corps de projectile (10) dans la partie arrière (11) du sabot, les zones de rupture de consigne (29, 31) étant formées par deux rainures périphériques (29, 31),
    caractérisée en ce que chaque zone de rupture de consigne (29, 31) comporte un perçage (40) s'étendant de l'une des rainures périphériques (29) jusqu'à l'autre rainure périphérique (31) et d'un côté de la languette (18).
  2. Constitution d'une zone de rupture de consigne selon la revendication 1, caractérisée par un perçage (40) respectif prévu des deux côtés de la languette (18).
EP88104229A 1987-04-30 1988-03-17 Constitution d'une zone de rupture à la partie arrière du sabot d'un projectile à calibre réduit Expired - Lifetime EP0288721B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH163487 1987-04-30
CH1634/87 1987-04-30

Publications (2)

Publication Number Publication Date
EP0288721A1 EP0288721A1 (fr) 1988-11-02
EP0288721B1 true EP0288721B1 (fr) 1993-09-22

Family

ID=4215039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88104229A Expired - Lifetime EP0288721B1 (fr) 1987-04-30 1988-03-17 Constitution d'une zone de rupture à la partie arrière du sabot d'un projectile à calibre réduit

Country Status (8)

Country Link
US (1) US4776280A (fr)
EP (1) EP0288721B1 (fr)
JP (1) JPS63282500A (fr)
CA (1) CA1312778C (fr)
DE (1) DE3884257D1 (fr)
IL (1) IL86048A (fr)
NO (1) NO163425C (fr)
ZA (1) ZA882945B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3724401A1 (de) * 1987-07-23 1989-05-18 Rheinmetall Gmbh Fluegelstabilisiertes, unterkalibriges treibkaefiggeschoss
US4881466A (en) * 1988-12-23 1989-11-21 General Electric Company High velocity sabot for spin stabilized penetrator
FR2642161B1 (fr) * 1989-01-26 1991-04-26 France Etat Armement Projectile sous-calibre et procede de montage et fixation d'un corps d'obus dans un projectile sous-calibre
FR2665761B1 (fr) * 1990-08-13 1994-09-16 Giat Ind Sa Ceinture d'etancheite pour projectile fleche.
EG21731A (en) * 1993-09-24 2002-02-27 Contraves Pyrotec Ag Releasable sabot for a subcaliber projectile
DE19650741C2 (de) * 1996-12-06 1999-11-11 Rheinmetall W & M Gmbh Verfahren zur Herstellung eines unterkalibrigen Geschosses
FR2768809B1 (fr) * 1997-09-24 1999-10-15 Giat Ind Sa Projectile d'artillerie de campagne de gros calibre a longue portee
US6564720B1 (en) 2000-01-14 2003-05-20 Olin Corporation Sabot for a bullet
DE102010045474A1 (de) * 2010-09-16 2012-03-22 Rheinmetall Waffe Munition Gmbh Geschoss mit abwerfbarem Treibspiegel
KR101527434B1 (ko) * 2015-01-08 2015-06-10 주식회사 풍산 압착홈과 톱니형 돌기에 의해 회전력 손실이 방지되는 회전안정식 탄두
DE102020115703B4 (de) * 2020-06-15 2024-02-22 Rheinmetall Waffe Munition Gmbh Treibkäfig

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB576217A (en) * 1943-03-08 1946-03-25 Ladislas Permutter Improvements in projectiles
NL137889C (fr) * 1967-07-28
CH536481A (de) * 1971-03-29 1973-06-15 Oerlikon Buehrle Ag Treibspiegelgeschoss und Verfahren zu dessen Herstellung
US3927618A (en) * 1971-03-29 1975-12-23 Oerlikon Buehrle Ag Sabot projectile
DE2223477A1 (de) * 1972-05-13 1973-11-22 Paul J Kopsch Geschoss mit sich aufloesender haube, projektil und verfahren zu dessen herstellung
CH622883A5 (fr) * 1977-07-21 1981-04-30 Oerlikon Buehrle Ag
US4403435A (en) * 1981-04-02 1983-09-13 Brunswick Corporation Release and alignment mechanism for jet-propelled projectiles
EP0072584B2 (fr) * 1981-08-13 1991-07-24 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Liaison entre l'enveloppe et la partie arrière d'un sabot pour projectile
EP0236705B1 (fr) * 1986-03-07 1989-11-29 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Assemblage de l'enveloppe et du fond d'un sabot pour projectile sous-calibré

Also Published As

Publication number Publication date
ZA882945B (en) 1988-12-28
NO881142L (no) 1988-10-31
NO881142D0 (no) 1988-03-15
IL86048A0 (en) 1988-09-30
IL86048A (en) 1992-09-06
JPS63282500A (ja) 1988-11-18
NO163425B (no) 1990-02-12
EP0288721A1 (fr) 1988-11-02
DE3884257D1 (de) 1993-10-28
CA1312778C (fr) 1993-01-19
US4776280A (en) 1988-10-11
NO163425C (no) 1990-05-23

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