EP1533590B1 - Obus explosif ayant une tenue aux chocs améliorée - Google Patents

Obus explosif ayant une tenue aux chocs améliorée Download PDF

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Publication number
EP1533590B1
EP1533590B1 EP04292486A EP04292486A EP1533590B1 EP 1533590 B1 EP1533590 B1 EP 1533590B1 EP 04292486 A EP04292486 A EP 04292486A EP 04292486 A EP04292486 A EP 04292486A EP 1533590 B1 EP1533590 B1 EP 1533590B1
Authority
EP
European Patent Office
Prior art keywords
shell
ring
explosive
shimming
explosive charge
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
EP04292486A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1533590A1 (fr
Inventor
Dominique Dion
Sylvain Jayet
Régis Aumasson
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.)
Nexter Munitions SA
Original Assignee
Nexter Munitions SA
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 Nexter Munitions SA filed Critical Nexter Munitions SA
Priority to PL04292486T priority Critical patent/PL1533590T3/pl
Publication of EP1533590A1 publication Critical patent/EP1533590A1/fr
Application granted granted Critical
Publication of EP1533590B1 publication Critical patent/EP1533590B1/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
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/02—Fuze bodies; Fuze housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/08—Ordnance projectiles or missiles, e.g. shells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B39/00—Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
    • F42B39/24—Shock-absorbing arrangements in packages, e.g. for shock waves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/04—Protective caps

Definitions

  • the technical field of the invention is that of explosive shells.
  • Explosive shells generally include a cast explosive charge disposed in a metal shell.
  • the envelope has an opening for casting the load. This opening is also intended to receive a rocket for the initiation of loading.
  • the shells must be able to be used in high temperature ranges (between -46 ° C and + 63 ° C). These large variations induce significant expansions of the explosive up to several millimeters (2 to 5 mm). Shells are also subjected to severe mechanical environments (falls and vibrations).
  • this shell comprises a bag-shaped case made of an elastic material, which case is interposed between the envelope of the shell and the load. Furthermore, a holding washer is applied to a surface of the explosive charge by screwing a rocket fixing ring.
  • the subject of the invention is an explosive shell comprising a fusible explosive charge disposed in an envelope comprising an opening, which shell comprises a setting means disposed in the vicinity of the opening of the shell, a wedging means comprising a ring made of an elastic material and which is interposed between a front part of the shell of the shell and the explosive charge, which ring is compressed by a compression means, shell characterized in that that the wedge ring has a flange which is housed in a groove of the envelope of the shell.
  • the compression means comprises a connecting piece screwed into the opening of the shell and which exerts a compressive stress on the wedging ring.
  • the compression means will advantageously comprise a washer interposed between the connecting piece and the wedging ring.
  • the setting ring may have a cylindrical axial bore and an outer profile matching the internal profile of the envelope.
  • the shell may comprise a priming tablet disposed in the cylindrical axial bore of the wedging ring.
  • the setting ring will be made of an elastomeric material.
  • an explosive shell 1 comprises a fusible explosive charge 2 which is cast inside a metal casing 3.
  • loading may include trinitrotoluene associated with wax and a complementary explosive such as Hexogen or Octogen. It may also include a low-sensitive explosive such as oxynitrotriazole (ONTA).
  • ONTA oxynitrotriazole
  • the casing 3 has an opening 4 which will carry a tapping 5 allowing the subsequent fixing of a firing rocket (not shown).
  • this shell comprises a means for setting the explosive charge 2 which is disposed in the vicinity of the opening 4 of the shell.
  • This wedging means comprises a ring 6 which is made of an elastic material and which is interposed between a front portion 7 of the envelope 3 of the shell and the explosive charge 2.
  • This wedging ring is made of an elastomeric material, chemically compatible with the explosive 2, and having a good aging resistance.
  • the ring may be made of a silicone rubber having a hardness of 45 Shore.
  • the figure 2 shows the ring 6 alone. It has an outer conical profile 6a which is intended to fit the inner profile 7 of the casing 3. It also comprises a cylindrical axial bore 6b which allows the loading of the shell 1 by casting and after setting up the ring 6.
  • the wedging ring 6 finally has an external cylindrical collar 6c which is intended to be housed in a groove 8 of the envelope 3 of the shell 1.
  • the flexibility of the material of the ring 6 allows its manual introduction, by elastic deformation, in the opening 4 of the shell 1 and before the casting of the load 2.
  • the flange 6c is introduced into the groove 8 and it ensures the maintenance of the ring 6 relative to the shell 1 before the casting of the load 2.
  • the casting of the explosive is then carried out through the axial bore 6b of the ring.
  • the explosive charge is poured up to the inside of the axial bore 6b.
  • the ring 6 is interposed between the explosive 2 and the inner wall 7 of the envelope 3.
  • a metal washer 9 is placed on the upper face of the ring 6 (see FIG. figure 3 ).
  • This washer 9 has an outer diameter smaller than the internal diameter of the opening 4 and carries an inner rim 9a which is positioned in the axial bore 6b of the ring.
  • the connecting piece 10 and the washer 9 constitute a compression means for the ring 6.
  • This maintenance makes it possible to avoid the appearance of defects or cracks, especially during rough handling at the lowest temperatures.
  • the connecting piece 10 has an internal bore 11 which allows the attachment of a rocket (not shown).
  • the shell is here represented in its storage configuration in which a transport ring 12 is screwed to the connecting piece 10 in place of the rocket.
  • the connecting piece 10 has a bottom 13 which isolates the explosive charge 2 moisture. This bottom will be broken during the initiation of the rocket. It will include a circular initiation of rupture allowing the projection of a portion of the bottom on the explosive charge 2 to allow its priming.
  • Such a connecting piece is the subject of the request for FR2781877 and will not be described in more detail.
  • the figure 4 shows another embodiment of a shell according to the invention.
  • This mode differs from the previous one in that a priming compact 14 is disposed in the cylindrical axial bore 6b of the setting ring 6.
  • This tablet is intended to facilitate the priming of the explosive charge 2 from the rocket (not shown)
  • Such a tablet is conventional and its composition (which depends on the nature of the explosive charge) is not the subject of the present invention.
  • mismatched, insensitive loadings are described by the FR2750131 they generally incorporate an insensitive explosive such as ONTA (oxynitrotriazole).
  • ONTA oxynitrotriazole
  • the priming tablet In known shells the priming tablet is stuck to the explosive charge. However the glue at the interface compressed / loading causes a bad transmission of the detonation. If the tablet is not glued, it may also move during handling of the shell and deteriorate by crumbling.
  • the compression of the setting ring 6 by screwing the connecting piece 10 causes a radial expansion of the ring 6 which also results in the reduction of the diameter of its bore 6b.
  • the ring 6 then ensures the firm maintenance of the priming tablet 14 in contact with the explosive charge 2.
  • This embodiment also facilitates the demilitarization of shells at the end of life. It suffices to unscrew the connecting piece 10.
  • the timing ring 6 then releases the priming tablet 14 which can easily be removed.
  • the explosive charge 2 which has been cast is meltable and is then easily removed from the shell by heating.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Toys (AREA)
EP04292486A 2003-11-17 2004-10-20 Obus explosif ayant une tenue aux chocs améliorée Expired - Lifetime EP1533590B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04292486T PL1533590T3 (pl) 2003-11-17 2004-10-20 Pocisk burzący mający poprawioną odporność na wstrząsy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0313523 2003-11-17
FR0313523A FR2862378B1 (fr) 2003-11-17 2003-11-17 Obus explosif ayant une tenue aux chocs amelioree

Publications (2)

Publication Number Publication Date
EP1533590A1 EP1533590A1 (fr) 2005-05-25
EP1533590B1 true EP1533590B1 (fr) 2012-06-20

Family

ID=34430017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04292486A Expired - Lifetime EP1533590B1 (fr) 2003-11-17 2004-10-20 Obus explosif ayant une tenue aux chocs améliorée

Country Status (10)

Country Link
US (1) US7174834B2 (no)
EP (1) EP1533590B1 (no)
AU (1) AU2004226912B8 (no)
CA (1) CA2484782C (no)
DK (1) DK1533590T3 (no)
ES (1) ES2389652T3 (no)
FR (1) FR2862378B1 (no)
NO (1) NO338258B1 (no)
PL (1) PL1533590T3 (no)
ZA (1) ZA200408928B (no)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2924494B1 (fr) 2007-12-03 2013-06-21 Nexter Munitions Procede de dechargement d'un corps de munition et outillage permettant la mise en oeuvre de ce procede
CN101592462B (zh) * 2009-07-02 2014-04-16 蒙宝林 工业粉状炸药药筒装药包装工艺及振动式装药机
US9459080B2 (en) 2013-03-15 2016-10-04 Hunting Titan, Inc. Venting system for a jet cutter in the event of deflagration
KR101399149B1 (ko) * 2014-01-28 2014-05-27 최홍준 탄약보관통
DE102016008391B4 (de) 2016-07-09 2018-05-24 Diehl Defence Gmbh & Co. Kg Geschoss
KR101929667B1 (ko) * 2017-06-14 2018-12-14 (주)수아 둔감 성능이 향상된 고폭탄용 운반고리
CN110030884B (zh) * 2019-04-08 2021-08-03 南京理工大学 一种分体式可快速连接的迫击炮弹及其组装方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599570A (en) * 1969-08-28 1971-08-17 Thiokol Chemical Corp Ammunition antidefuzing device
US3978795A (en) * 1972-07-05 1976-09-07 Dynamit Nobel Aktiengesellschaft Retaining ring apparatus
US4365556A (en) * 1980-10-06 1982-12-28 The United States Of America As Represented By The Secretary Of The Army Method and system for preventing base separation of cast explosives in projectiles
CA1264123A (en) * 1981-12-08 1990-01-02 John Stuart Mcveagh Hollow charge and liner assemblage
IL80202A (en) * 1985-10-22 1994-11-11 Royal Ordnance Plc Internal sealants for shell blasting material
IN169266B (no) * 1985-10-22 1991-09-21 Royal Ordnance Plc
DE3929020A1 (de) * 1989-09-01 1991-03-21 Diehl Gmbh & Co Zuender fuer die sprengladung eines splittergeschosses
US5133259A (en) * 1990-05-23 1992-07-28 Olin Corporation Seal ring for pyrotechnically initiated projectile
SE468687B (sv) * 1991-06-18 1993-03-01 Bofors Ab Saett och anordning foer avtaetning av spraengladdningsutrymmet i en granat
DE4123649C2 (de) * 1991-07-17 1993-11-11 Rheinmetall Gmbh Ausstoßvorrichtung
FR2682754B1 (fr) * 1991-10-22 1995-03-03 Giat Ind Sa Obus cargo.
SE501121C2 (sv) * 1992-01-29 1994-11-21 Bofors Ab Ammunition
DE19535218C1 (de) * 1995-09-22 1997-02-27 Diehl Gmbh & Co Ballistisches Geschoß
DE10207209A1 (de) * 2002-02-21 2003-09-11 Rheinmetall W & M Gmbh Verfahren zur Herstellung eines großkalibrigen Sprenggeschosses und Sprenggeschoß, hergestellt nach diesem Verfahren
US7025000B1 (en) * 2002-04-11 2006-04-11 The United States Of America As Represented By The Secretary Of The Army Mechanism for reducing the vulnerability of high explosive loaded munitions to unplanned thermal stimuli

Also Published As

Publication number Publication date
FR2862378B1 (fr) 2007-11-23
NO20044980L (no) 2005-05-18
CA2484782A1 (fr) 2005-05-17
AU2004226912B8 (en) 2010-05-06
ZA200408928B (en) 2005-08-31
US20050155512A1 (en) 2005-07-21
PL1533590T3 (pl) 2012-11-30
CA2484782C (fr) 2012-10-02
US7174834B2 (en) 2007-02-13
DK1533590T3 (da) 2012-07-23
NO338258B1 (no) 2016-08-08
AU2004226912B2 (en) 2010-01-14
AU2004226912A1 (en) 2005-06-02
EP1533590A1 (fr) 2005-05-25
FR2862378A1 (fr) 2005-05-20
ES2389652T3 (es) 2012-10-30

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