EP0183892A1 - Seal for kinetic munition - Google Patents

Seal for kinetic munition Download PDF

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Publication number
EP0183892A1
EP0183892A1 EP85100647A EP85100647A EP0183892A1 EP 0183892 A1 EP0183892 A1 EP 0183892A1 EP 85100647 A EP85100647 A EP 85100647A EP 85100647 A EP85100647 A EP 85100647A EP 0183892 A1 EP0183892 A1 EP 0183892A1
Authority
EP
European Patent Office
Prior art keywords
sabot
projectile
seal
arms
annular
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Withdrawn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
EP85100647A
Other languages
German (de)
English (en)
French (fr)
Inventor
Avraham Makov
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.)
Israel Military Industries Ltd
State of Israel
Original Assignee
Israel Military Industries Ltd
State of Israel
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 Israel Military Industries Ltd, State of Israel filed Critical Israel Military Industries Ltd
Publication of EP0183892A1 publication Critical patent/EP0183892A1/en
Withdrawn legal-status Critical Current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
    • F42B14/061—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
    • F42B14/067—Sealing aspects in sabots, e.g. sealing between individual segments of the sabots or sealing between the outer surface of the sabot and the inner surface of the barrel

Definitions

  • the present invention concerns a sabot-type armor piercing, kinetic energy munition.
  • sabot projectile comprises an elongated sub-projectile made of hard, armor piercing metal and partially enclosed within a segmented sabot whose segments are adequately hooped together, means being provided for a suitable interlock between the sabot segments and the sub-projectile to prevent mutual dislocation by the action of the propellant gases.
  • the sabot is so designed as to impart to the sub-projectile the desired muzzle velocity and to separate neatly once the sub-projectile has left the muzzle, in consequence of aerodynamic and other pressure forces acting on the sabot.
  • a sabot projectile comprising a penetrator-type sub-projectile partially enclosed within a segmented sabot having a rear portion adapted to receive the thrust of the propellant gases as known per se, characterised in that in front of said rear portion the sabot projectile comprises an annular seal with at least two radially extending and centrosymmetrically arranged arms, which seal is accommodated in a mating cavity comprising a circumferential groove in the body of the sub-projectile and bores in the sabot.
  • the arms may be coplanar with the annular seal, may form an angle therewith so as to be askew with respect to the axis of the sabot projectile or be located in a plane parallel to that of the annular seal and be linked to the latter by means of suitable linking pieces.
  • the sealing effect of the seal in the sabot projectile assembly according to the invention is obtained by deformation of the seal as a result of the propellant gas pressure.
  • the seal adapts itself to the firing conditions.
  • the invention also provides for use in a sabot projectile assembly of the kind specified, a seal characterised by an annular body with at least two radially extending and centrosymmetrically arranged arms.
  • the number of arms may vary from 2 upwards and will depend on the general design of the sabot projectile assembly. For many purposes a 3-armed annular seal accommodated in a matching cavity has been found suitable.
  • the seal may be of any suitable material such as thermosetting elastomer and the like.
  • the properties of the seal can easily and reliably be checked before incorporation into the sabot projectile assembly. Moreover the simple shape and form of the seal in accordance with the invention lends itself readily to mass production.
  • the annular seal with its readily extending arms and the mating cavity in the sabot projectile may have any suitable profile such as circular, rectang- gular, quadrangular.
  • the sabot projectile here shown comprises a penetrator-type sub-projectile 1 and a segmented sabot 2 having three segments 3, two of which are shown in Fig. 1 while one is cut away, held together by aluminium hoops (not shown).
  • the outer surface of projectile 1 and the inner surface of sabot 2 are provided with intermeshing grooves 4 and in this way the sub-projectile and sabot are firmly interlocked so as to resist any relative dislocation in consequence of the propellant gas pressure on the sabot which, depending on the nature of the munition, is of the order of 4000 to 6000 bars.
  • the rer portion 5 of sabot 2 is fitted with a slipping obturator 6, e.g. of an elastomer adapted for cooperation with the rifling of the barrel of the weapon that launches the sabot projectile.
  • a slipping obturator 6 e.g. of an elastomer adapted for cooperation with the rifling of the barrel of the weapon that launches the sabot projectile.
  • the sub-projectile 1 comprises a circumferential groove 7 and coplanar therewith sabot 2 comprises three bores 8, the groove 7 and bores 8 together with the sabot wall portion surrounding the groove 7 forming together an annular cavity with three radially extending bores which accommodate an annular seal 9 having three centrosymmetrically arranged arms 10.
  • seal 9 is first forcably slid on so as to snap into the annular groove 7 and thereupon the sabot is assembled around the projectile 1 such that each arm 10 is accommodated by one of the bores 8.
  • each of radial bores 8 extendsacross the rear portion 5 of the sabot opening into the groove that accommodates the slipping obturator 6, which is particularly favourable from a manufacturing point of view.
  • Each bore 8 is sealed by the slipping obturator 6.
  • Groove 7 may be of the same shape as those of the intermeshing grooves 4 which are on the sub-projectile 1, which simplifies production.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP85100647A 1984-12-04 1985-01-23 Seal for kinetic munition Withdrawn EP0183892A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL73724A IL73724A0 (en) 1984-12-04 1984-12-04 Seal for kinetic munition
IL73724 1984-12-04

Publications (1)

Publication Number Publication Date
EP0183892A1 true EP0183892A1 (en) 1986-06-11

Family

ID=11055535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100647A Withdrawn EP0183892A1 (en) 1984-12-04 1985-01-23 Seal for kinetic munition

Country Status (3)

Country Link
EP (1) EP0183892A1 (da)
DK (1) DK103885A (da)
IL (1) IL73724A0 (da)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0320485A1 (de) * 1987-12-01 1989-06-14 NORICUM MASCHINENBAU UND HANDEL GESELLSCHAFT m.b.H. Treibkäfig für unterkalibrige Wuchtgeschosse
US5227580A (en) * 1990-05-04 1993-07-13 Giat Industries Sealing device for an arrow projectile
FR2695717A1 (fr) * 1992-09-16 1994-03-18 Saint Louis Inst Sabot pour projectile pour accélérateur par effet de statoréacteur et projectile équipé d'un tel sabot.
US5413049A (en) * 1993-07-13 1995-05-09 Pacific Armatechnica Corporation Reduction of velocity decay of fin stabilized subcaliber projectiles
CN111121533A (zh) * 2020-02-17 2020-05-08 南京理工大学 一种阻力自适应式弹带装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187783A (en) * 1978-03-13 1980-02-12 The United States Of America As Represented By The Secretary Of The Army Discarding sabot munition
US4424748A (en) * 1981-08-07 1984-01-10 The United States Of America As Represented By The Secretary Of The Army Segmented seal for discarding sabot ammunition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187783A (en) * 1978-03-13 1980-02-12 The United States Of America As Represented By The Secretary Of The Army Discarding sabot munition
US4424748A (en) * 1981-08-07 1984-01-10 The United States Of America As Represented By The Secretary Of The Army Segmented seal for discarding sabot ammunition

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0320485A1 (de) * 1987-12-01 1989-06-14 NORICUM MASCHINENBAU UND HANDEL GESELLSCHAFT m.b.H. Treibkäfig für unterkalibrige Wuchtgeschosse
US5227580A (en) * 1990-05-04 1993-07-13 Giat Industries Sealing device for an arrow projectile
FR2695717A1 (fr) * 1992-09-16 1994-03-18 Saint Louis Inst Sabot pour projectile pour accélérateur par effet de statoréacteur et projectile équipé d'un tel sabot.
US5394805A (en) * 1992-09-16 1995-03-07 Institut Franco-Allemand De Recherches De Saint-Louis Sabot for projectiles of RAM accelerators and projectiles equipped with such a sabot
US5413049A (en) * 1993-07-13 1995-05-09 Pacific Armatechnica Corporation Reduction of velocity decay of fin stabilized subcaliber projectiles
CN111121533A (zh) * 2020-02-17 2020-05-08 南京理工大学 一种阻力自适应式弹带装置
CN111121533B (zh) * 2020-02-17 2022-03-18 南京理工大学 一种阻力自适应式弹带装置

Also Published As

Publication number Publication date
DK103885A (da) 1986-06-05
DK103885D0 (da) 1985-03-07
IL73724A0 (en) 1985-03-31

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

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

17P Request for examination filed

Effective date: 19860630

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Effective date: 19870605

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18W Application withdrawn

Withdrawal date: 19871015

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MAKOV, AVRAHAM