EP0255570B1 - Projectile à sabot, notamment projectile du type flèche - Google Patents

Projectile à sabot, notamment projectile du type flèche Download PDF

Info

Publication number
EP0255570B1
EP0255570B1 EP87105617A EP87105617A EP0255570B1 EP 0255570 B1 EP0255570 B1 EP 0255570B1 EP 87105617 A EP87105617 A EP 87105617A EP 87105617 A EP87105617 A EP 87105617A EP 0255570 B1 EP0255570 B1 EP 0255570B1
Authority
EP
European Patent Office
Prior art keywords
sabot
projectile
projectile body
thread
arrow
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
EP87105617A
Other languages
German (de)
English (en)
Other versions
EP0255570A1 (fr
Inventor
Hanspeter Sigg
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 EP0255570A1 publication Critical patent/EP0255570A1/fr
Application granted granted Critical
Publication of EP0255570B1 publication Critical patent/EP0255570B1/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

Definitions

  • the swirl of the sabot should be transmitted as completely as possible to the projectile body.
  • the projectile body therefore has recesses as holding means, in which the sabot engages on the sabot for the purpose of transmitting the forces occurring between the sabot and projectile body via holding means designed as cams.
  • the object which is to be achieved with the present invention is to create a sabot projectile which remains completely stable in its trajectory and whose swirl is correspondingly small.
  • the inventive bullet with the this object is achieved is characterized in that the thread has the direction of rotation of the tube swirl and the friction angle (1 1) corresponds to the size of the pitch angle (a) between the projectile body and the sabot.
  • the sabot projectile described protrudes into a cartridge case, not shown.
  • a cartridge case not shown.
  • two so-called cartridge grooves 29 are provided, to which the cartridge case is attached with the cartridge case mouth.
  • the pins 22 move radially outward by centrifugal forces to such an extent that the projectile body 10 can rotate in the sabot 19, i.e. a rotational slip between the projectile body 10 and the sabot 19 is made possible.
  • the size of the pitch angle ⁇ on the saw thread 11 and the direction of rotation are selected such that the frictional forces between the projectile body 10 and the sabot 19 are not sufficient to transmit the swirl acceleration from the sabot 19 completely to the projectile body 10. It is thereby achieved that the projectile body 10 emerges from the weapon barrel with a smaller swirl or without swirl than the sabot 19.
  • the invention now consists in choosing the size of the pitch angle a such that the rotation of the projectile body 10 corresponds to the optimum speed for an arrow projectile in order to ensure a stable flight of the projectile body. With a large swirl, a stable flight on arrow projectiles is not guaranteed.
  • a lubricating varnish is preferably inserted between the external thread 11 of the projectile body 10 and the internal thread 20 of the sabot 19 to ensure a constant frictional force.
  • the pins 22 located in the sabot 19 are preferably supported on flats 31 on the projectile body 10 and, as described above, do not protrude into blind holes in the projectile body 10. Because with such blind holes there is a risk that each pin 22 jams in this blind hole before it is pushed out by the swirl. On the other hand, the flat 31 is able to move the pin 22 itself radially outwards as soon as the projectile body 10 moves relative to the sabot 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Materials For Medical Uses (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Testing Of Engines (AREA)

Claims (4)

1. Projectile à sabot (9) notamment projectile de type flèche comprenant:
- un corps de projectile (10) notamment en forme de flèche avec un filetage extérieur (11) notamment un filetage en dents de scie,
- un sabot (19) notamment en métal léger avec des zones de rupture de consigne (27), des rainures pour cartouches (29) et un filetage intérieur (20) dans lequel peut se visser le corps de projectile et qui le reçoit en rotation,
- une enveloppe de sabot en matière synthétique avec des sections de guidage (24) dans le canon et les zones de rupture de consigne (27),
- une coiffe en matière synthétique (25), caractérisé en ce que:
- le filetage (11, 20) correspond au sens de rotation des rainures du canon et l'amplitude de l'angle du pas (a) correspond à l'angle de glissement en frottement (µ) entre le corps de projectile (10) et le sabot (19).
2. Projectile à sabot selon la revendication 1, caractérisé par une joint d'étanchéité en labyrinthe (21) et une zone de rupture de consigne (27) pour éjecter la coiffe (25) à l'aide des gaz de propulsion lors de la sortie du projectile, gaz qui passent le long de cette zone de rupture de consigne (27).
3. Projectile à sabot selon la revendication 1, caractérisé en ce qu'entre le filetage extérieur (11) du corps de projectile (10) et le filetage intérieur (20) du sabot (19), il y a du vernis lubrifiant pour garantir une force de frottement constante.
4. Projectile à sabot selon la revendication 4, caractérisé par au moins un goujon (22) logé dans un perçage radial (30) du sabot (19) et s'appuyant sur un méplat (31) du corps de projectile (10) pour éviter toute rotation accidentelle du corps de projectile (10) dans le sabot (19).
EP87105617A 1986-07-07 1987-04-15 Projectile à sabot, notamment projectile du type flèche Expired - Lifetime EP0255570B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2732/86 1986-07-07
CH273286 1986-07-07

Publications (2)

Publication Number Publication Date
EP0255570A1 EP0255570A1 (fr) 1988-02-10
EP0255570B1 true EP0255570B1 (fr) 1990-05-23

Family

ID=4240360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105617A Expired - Lifetime EP0255570B1 (fr) 1986-07-07 1987-04-15 Projectile à sabot, notamment projectile du type flèche

Country Status (5)

Country Link
US (1) US4733612A (fr)
EP (1) EP0255570B1 (fr)
JP (1) JPS6315099A (fr)
DE (1) DE3762922D1 (fr)
NO (1) NO161403C (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3510913A1 (de) * 1985-03-26 1986-10-09 Diehl GmbH & Co, 8500 Nürnberg Projektil
US4901646A (en) * 1987-07-20 1990-02-20 Pacific Armatechnica Corporation Fin-stabilized subcaliber projectile
DE3937665A1 (de) * 1989-11-11 1991-05-16 Rheinmetall Gmbh Geschossanordnung
DE4012154A1 (de) * 1990-04-14 1991-10-17 Rheinmetall Gmbh Unterkalibriges geschoss mit treibkaefig
FR2665765B1 (fr) * 1990-08-13 1994-09-16 Giat Ind Sa Dispositif d'arret en rotation entre un barreau et un sabot.
US5223667A (en) * 1992-01-21 1993-06-29 Bei Electronics, Inc. Plural piece flechettes affording enhanced penetration
JP2008057945A (ja) * 2006-08-30 2008-03-13 Sefa-Japan:Kk 平滑銃身またはライフリング付銃身より発射可能で命中精度のよい単体および複合体装弾筒を有する銃砲用装弾
JP5325467B2 (ja) * 2008-06-10 2013-10-23 株式会社Ｉｈｉエアロスペース 弾体
US10502515B2 (en) * 2017-01-17 2019-12-10 Raytheon Company Launch piston brake

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US265A (en) * 1837-07-11 Machinery for molding candles
US2996011A (en) * 1944-06-30 1961-08-15 Henry F Dunlap Projectile
US3000316A (en) * 1944-07-10 1961-09-19 Henry F Dunlap Projectile
CH516134A (fr) * 1969-03-17 1971-11-30 Brevets Aero Mecaniques Obus à noyau sous-calibré
US3738279A (en) * 1970-07-24 1973-06-12 Us Navy Sabot for sub-calibre projectile
SE400373B (sv) * 1974-08-21 1978-03-20 Bofors Ab Drivspegel for underkalibrig projektil
DE2630830A1 (de) * 1976-07-09 1978-01-19 Dynamit Nobel Ag Treibspiegelgeschoss
CH632086A5 (de) * 1978-08-08 1982-09-15 Oerlikon Buehrle Ag Verfahren zur herstellung eines treibspiegelgeschosses und nach dem verfahren hergestelltes treibspiegelgeschoss.
US4469027A (en) * 1983-04-15 1984-09-04 The United States Of America As Represented By The Secretary Of The Army Armor piercing ammunition having interlocking means

Also Published As

Publication number Publication date
EP0255570A1 (fr) 1988-02-10
US4733612A (en) 1988-03-29
DE3762922D1 (de) 1990-06-28
NO872014D0 (no) 1987-05-14
NO872014L (no) 1988-01-08
JPS6315099A (ja) 1988-01-22
NO161403C (no) 1989-08-09
NO161403B (no) 1989-05-02

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