EP0104587A1 - Projectile sous-calibre - Google Patents

Projectile sous-calibre Download PDF

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Publication number
EP0104587A1
EP0104587A1 EP83109301A EP83109301A EP0104587A1 EP 0104587 A1 EP0104587 A1 EP 0104587A1 EP 83109301 A EP83109301 A EP 83109301A EP 83109301 A EP83109301 A EP 83109301A EP 0104587 A1 EP0104587 A1 EP 0104587A1
Authority
EP
European Patent Office
Prior art keywords
sabot
pusher
penetrator
munition
subcaliber
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.)
Withdrawn
Application number
EP83109301A
Other languages
German (de)
English (en)
Inventor
William O. Davis
Byron K. Olson
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Publication of EP0104587A1 publication Critical patent/EP0104587A1/fr
Withdrawn legal-status Critical Current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 present invention relates to subcaliber munition according to the preamble of claim 1.
  • a subcaliber projectile from a gun of larger.caliber, by use of a construction in which a small but massive penetrator of material such as tungsten is surrounded by a larger sabot of light plastic such as nylon.
  • the sabot includes a base or pusher against which the propellant charge acts to propel the munition from the muzzle of a gun, and a rotating band is formed on the sabot to give the projectile the spin about its axis necessary for stable flight.
  • the sabot separates from the penetrator after leaving the gun, and the plastic is configured for fracture by centrifugal force to ensure this.
  • propellant gas sometimes leaks between the pusher and the sabot, and prematurely separates the sabot from the penetrator while the projectile is still in the gun.
  • the object of the present invention to provide a subcaliber munition at which premature separation of the sabot from the penetrator is prevented. This object is achieved according to the characterizing features of claim 1. Further advantageous embodiments of the present invention may be taken from the sub-claims.
  • a subcaliber munition 9 according to the invention has a longitudinal axis 10 and is shown to comprise a massive penetrator 11 having a flat forward end 12 with a wind screen 13 and a rearward end 14 to which there is crimped a tracer cup 15.
  • Penetrator 11 is of smaller diameter than the barrel 16 of the gun firing the projectile. Accordingly, the penetrator is made part of an assembly including a base or pusher 20 of aluminum, a sabot 17 of nylon, and a protective plastic cup 22.
  • Pusher 20 has a forward conical cavity 23 to engage a rearward conical convexity 24 of penetrator 11, and a forward cylinder 25 of pusher 20 has an outer surface 26 on which a diamond or straight knurling 31 is applied for better sealing, axial securement, and for better torque transmission.
  • Pusher 20 has a groove 21 into which the sabot material 17 flows during moulding.
  • pusher 20 has a groove 27 for crimping connection to a cartridge case not shown, and a shoulder 28 with a peripheral groove 30 extending rearwardly, and located quite close to the periphery of the pusher.
  • Sabot 17 engages the knurling 31 and forms a peripheral tongue 32 to engage pusher groove 30 during moulding.
  • sabot 17 has four deep longitudinal forward slots 33 with tapering bottoms.
  • sabot 17 has a peripheral groove 34 to receive a lip 35 of cap 22, which tapers forwardly to a blunt tip 36 and may have a plurality of slots 37.
  • penetrator 11 be given a rapid spin about its axis 10 for stable flight. This is accomplished by providing sabot 17 with a rotating band 40 for engaging the rifling lands of barrel 16 as the projectile moves in the gun. The resulting torque is transferred to penetrator 20 through the knurlings of surface 26. Also, sabot 17 is moulded around pusher 20, penetrator 11, and wind screen 13 so that a very good coefficient of friction exists between them, and conical surfaces 23 and 24 may be roughened so that under the many thousand g's acting on the munition when it is fired, high friction also exists between the penetrator and the pusher. The result is that as it leaves the gun barrel the entire projectile, including the penetrator, has acquired the necessary spin to maintain stable flight.
  • the spin performs another function.
  • sabot 17 is so weakened against centrifugal force that when the projectile attains its projected spin rate, many thousands of revolutions per minute, the sabot yields along the weakened lines.
  • the sabot is prevented from completing its longitudinal disintegration by contact of the barrel lands with rotating band 40, and the forward diameter of the sabot is only a few thousands of an inch less than the barrel diameter, so the sabot remains substantially intact while in the gun.
  • Cap 22 is not so protected, and simply disintegrates under the set-back forces involved and is pushed out the gun in fragments ahead of the sabot and penetrator.
  • the invention comprises an improved construction for subcaliber munitions in which premature separation of the sabot from the penetrator due to propulsion gas leakage is obviated.
EP83109301A 1982-09-23 1983-09-20 Projectile sous-calibre Withdrawn EP0104587A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42224582A 1982-09-23 1982-09-23
US422245 1982-09-23

Publications (1)

Publication Number Publication Date
EP0104587A1 true EP0104587A1 (fr) 1984-04-04

Family

ID=23674013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83109301A Withdrawn EP0104587A1 (fr) 1982-09-23 1983-09-20 Projectile sous-calibre

Country Status (1)

Country Link
EP (1) EP0104587A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0238817A1 (fr) * 1986-03-21 1987-09-30 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Projectile du type à sabot dont la partie arrière et le manchon qui composent ledit sabot comportent une fixation à ligne de rupture
US4841867A (en) * 1987-12-28 1989-06-27 Ford Aerospace Corporation Discarding sabot projectile
FR2757623A1 (fr) 1996-12-06 1998-06-26 Rheinmetall Ind Ag Projectile sous-calibre
DE19650741C2 (de) * 1996-12-06 1999-11-11 Rheinmetall W & M Gmbh Verfahren zur Herstellung eines unterkalibrigen Geschosses
DE19650739C2 (de) * 1996-12-06 1999-12-16 Rheinmetall W & M Gmbh Unterkalibriges Geschoß

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1703816A1 (de) * 1967-07-28 1972-02-10 Oerlikon Buehrle Ag Treibspiegelgeschoss
CH536481A (de) * 1971-03-29 1973-06-15 Oerlikon Buehrle Ag Treibspiegelgeschoss und Verfahren zu dessen Herstellung
CH627550A5 (de) * 1978-05-30 1982-01-15 Oerlikon Buehrle Ag Drallstabilisiertes treibspiegelgeschoss zur ueberwindung eines heterogenen widerstandes.
EP0072584A1 (fr) * 1981-08-13 1983-02-23 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Liaison entre l'enveloppe et la partie arrière d'un sabot pour projectile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1703816A1 (de) * 1967-07-28 1972-02-10 Oerlikon Buehrle Ag Treibspiegelgeschoss
CH536481A (de) * 1971-03-29 1973-06-15 Oerlikon Buehrle Ag Treibspiegelgeschoss und Verfahren zu dessen Herstellung
CH627550A5 (de) * 1978-05-30 1982-01-15 Oerlikon Buehrle Ag Drallstabilisiertes treibspiegelgeschoss zur ueberwindung eines heterogenen widerstandes.
EP0072584A1 (fr) * 1981-08-13 1983-02-23 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Liaison entre l'enveloppe et la partie arrière d'un sabot pour projectile

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0238817A1 (fr) * 1986-03-21 1987-09-30 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Projectile du type à sabot dont la partie arrière et le manchon qui composent ledit sabot comportent une fixation à ligne de rupture
US4750425A (en) * 1986-03-21 1988-06-14 Werkzeugmaschinenfabrik Oerlikon-Buhrle Ag Sabot projectile with a sabot tail to which an attachment sleeve is fastened through a reference fracture location
US4841867A (en) * 1987-12-28 1989-06-27 Ford Aerospace Corporation Discarding sabot projectile
FR2757623A1 (fr) 1996-12-06 1998-06-26 Rheinmetall Ind Ag Projectile sous-calibre
US5959238A (en) * 1996-12-06 1999-09-28 Rheinmetall W & M Gmbh Subcaliber projectile
DE19650741C2 (de) * 1996-12-06 1999-11-11 Rheinmetall W & M Gmbh Verfahren zur Herstellung eines unterkalibrigen Geschosses
DE19650739C2 (de) * 1996-12-06 1999-12-16 Rheinmetall W & M Gmbh Unterkalibriges Geschoß
DE19650740C2 (de) * 1996-12-06 1999-12-16 Rheinmetall W & M Gmbh Unterkalibriges Geschoß

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB LI SE

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19841205

RIN1 Information on inventor provided before grant (corrected)

Inventor name: OLSON, BYRON K.

Inventor name: DAVIS, WILLIAM O.