EP0255570A1 - Projectile à sabot, notamment projectile du type flèche - Google Patents

Projectile à sabot, notamment projectile du type flèche Download PDF

Info

Publication number
EP0255570A1
EP0255570A1 EP87105617A EP87105617A EP0255570A1 EP 0255570 A1 EP0255570 A1 EP 0255570A1 EP 87105617 A EP87105617 A EP 87105617A EP 87105617 A EP87105617 A EP 87105617A EP 0255570 A1 EP0255570 A1 EP 0255570A1
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.)
Granted
Application number
EP87105617A
Other languages
German (de)
English (en)
Other versions
EP0255570B1 (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 invention relates to a sabot projectile, in particular an arrow projectile, comprising: a projectile body, in particular arrow-shaped, with an external thread, in particular a saw thread, a sabot, in particular made of light metal, with predetermined breaking points, cartridge grooves and an internal thread into which the projectile body can be screwed, - A sabot jacket made of plastic with pipe guide sections and predetermined breaking points, and a hood made of plastic.
  • 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.
  • a disadvantage of these known arrow projectiles is that the stability of the projectile body, in particular an arrow-shaped projectile body, is no longer guaranteed in the event of a large swirl.
  • 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 projectile according to the invention is characterized in that the projectile body 10 is rotatably mounted in the sabot 19 and that the thread 11, 20 has the direction of rotation of the tubular twist and the size of the thread pitch angle ⁇ , the sliding friction angle ⁇ between the projectile body 10 and Sabot 19 approximately corresponds.
  • This sabot bullet contains: - An arrow-shaped projectile body 10, which is also referred to as a heavy metal core and which has a thread, preferably a saw thread 11, in the central section. This thread 11 has a pitch angle ⁇ , which is shown in the drawing and the meaning of which is explained below.
  • a light set sleeve 16 with a light set 17, is located in the rear end of the sleeve 12.
  • a flange 18 prevents the light set sleeve 16 with the light set 17 from falling out of the sleeve 12.
  • This sabot 19 has grooves 21 which form a labyrinth seal, the purpose of which is explained below.
  • Two pins 22 which through radial holes in Sabot 19 project into corresponding blind holes on the projectile body 10 and secure the sabot 19 against rotation relative to the projectile body 10.
  • pins 22 are held by a cartridge case, not shown, and are radially displaced by the swirl, so that the projectile body 10 can already rotate in the weapon barrel, relative to the sabot 19, as explained further below.
  • a sabot jacket 23 which surrounds the sabot 19 and which has two pipe guide sections 24 which penetrate into swirl grooves (not shown) of the weapon barrel and impart a swirl to the sabot projectile when fired.
  • the sabot jacket 23 is preferably made of plastic.
  • a hood 25 which is fastened to the sabot jacket 23 by a snap lock 26.
  • This hood which is closed at the front, is hollow and can be filled with propellant gas via the aforementioned labyrinth seal and a longitudinal groove 27 in such a way that it is torn open by the gas pressure when it exits the weapon barrel.
  • An ogive 28 or a truncated cone which is located at the front end of the projectile body 10 and protrudes into the hood 25 mentioned.
  • 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 operation of the sabot projectile described is as follows:
  • the cartridge case mouth of the cartridge case, not shown, protrudes into the cartridge grooves 29 and prevents the sabot projectile from the Cartridge case can fall out.
  • the two pins prevent the projectile body 10 from rotating in the sabot 19.
  • 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 ⁇ 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 do not protrude into blind holes in the projectile body 10, as described above. Because with such blind holes there is a risk that each pin 22 is jammed in this blind hole before being 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)
  • Testing Of Engines (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)
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
CH273286 1986-07-07
CH2732/86 1986-07-07

Publications (2)

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195419B (en) * 1985-03-26 1990-01-10 Diehl Gmbh & Co Projectile
FR2654506A1 (fr) * 1989-11-11 1991-05-17 Rheinmetall Gmbh Ensemble de projectile sous-calibre.
FR2660993A1 (fr) * 1990-04-14 1991-10-18 Rheinmetall Gmbh Projectile sous-calibre comprenant un sabot de poussee.
FR2665765A1 (fr) * 1990-08-13 1992-02-14 Giat Ind Sa Dispositif d'arret en rotation entre un barreau et un sabot.

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901646A (en) * 1987-07-20 1990-02-20 Pacific Armatechnica Corporation Fin-stabilized subcaliber projectile
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996011A (en) * 1944-06-30 1961-08-15 Henry F Dunlap Projectile
US3000316A (en) * 1944-07-10 1961-09-19 Henry F Dunlap Projectile
DE2007822A1 (de) * 1969-03-17 1970-09-24 Brevets Aero Mecaniques Granate mit unterkalibriertem Kern
US3738279A (en) * 1970-07-24 1973-06-12 Us Navy Sabot for sub-calibre projectile
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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US265A (en) * 1837-07-11 Machinery for molding candles
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.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996011A (en) * 1944-06-30 1961-08-15 Henry F Dunlap Projectile
US3000316A (en) * 1944-07-10 1961-09-19 Henry F Dunlap Projectile
DE2007822A1 (de) * 1969-03-17 1970-09-24 Brevets Aero Mecaniques Granate mit unterkalibriertem Kern
US3738279A (en) * 1970-07-24 1973-06-12 Us Navy Sabot for sub-calibre projectile
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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195419B (en) * 1985-03-26 1990-01-10 Diehl Gmbh & Co Projectile
FR2654506A1 (fr) * 1989-11-11 1991-05-17 Rheinmetall Gmbh Ensemble de projectile sous-calibre.
FR2660993A1 (fr) * 1990-04-14 1991-10-18 Rheinmetall Gmbh Projectile sous-calibre comprenant un sabot de poussee.
FR2665765A1 (fr) * 1990-08-13 1992-02-14 Giat Ind Sa Dispositif d'arret en rotation entre un barreau et un sabot.
EP0471616A1 (fr) * 1990-08-13 1992-02-19 GIAT Industries Dispositif d'arrêt en rotation entre un barreau et un sabot
US5138951A (en) * 1990-08-13 1992-08-18 Giat Industries Device for stopping rotation between a bar and a sabot

Also Published As

Publication number Publication date
JPS6315099A (ja) 1988-01-22
DE3762922D1 (de) 1990-06-28
NO872014L (no) 1988-01-08
EP0255570B1 (fr) 1990-05-23
US4733612A (en) 1988-03-29
NO872014D0 (no) 1987-05-14
NO161403C (no) 1989-08-09
NO161403B (no) 1989-05-02

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