EP1748274A1 - Verfahren zur Herstellung einer Munition - Google Patents

Verfahren zur Herstellung einer Munition Download PDF

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Publication number
EP1748274A1
EP1748274A1 EP06291139A EP06291139A EP1748274A1 EP 1748274 A1 EP1748274 A1 EP 1748274A1 EP 06291139 A EP06291139 A EP 06291139A EP 06291139 A EP06291139 A EP 06291139A EP 1748274 A1 EP1748274 A1 EP 1748274A1
Authority
EP
European Patent Office
Prior art keywords
case
projectile
ring
igniter
ammunition
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Withdrawn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
EP06291139A
Other languages
English (en)
French (fr)
Inventor
Pierre André Moreau
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
Giat Industries 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 Giat Industries SA filed Critical Giat Industries SA
Publication of EP1748274A1 publication Critical patent/EP1748274A1/de
Withdrawn legal-status Critical Current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
    • F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
    • F42B33/007—Making cavities in an explosive or propulsive charge

Definitions

  • the technical field of the invention is that of ammunition assembly and loading methods.
  • the propellant charge of the ammunition is most often a grain load which is put in place inside the socket.
  • the problem of loading is all the more important as the projectile penetrates more inside the case, which is particularly the case for ammunition with empennage.
  • Another conventional solution is to set up the powder through a rear orifice arranged on the base and which is intended to receive the igniter.
  • the loading method according to the invention makes it easy to perform on a single tool the different loading operations of a munition.
  • the subject of the invention is a method for mounting an ammunition in which a propellant charge in grains is placed inside a case and the projectile and an igniter are attached to the case, characterized in that after placing the load in the case, the casing is rotated about its axis so as to excavate an axial portion of the load intended to receive a rear part of the projectile.
  • the projectile may be secured to a ring and then fix the ring to the case by welding.
  • the projectile ring can be attached to the case by friction welding.
  • Figure 1 schematically shows a munition 1 which has been loaded by the method according to the invention.
  • This ammunition comprises a projectile 2 which is connected to a case 3 by a ring 9.
  • the case 3 encloses a propellant charge 4 and carries at its rear part a metal base 6 and an igniter 5 intended to initiate the charge 4 which is here a propulsive charge in grains.
  • the case may be made of a combustible material (for large caliber ammunition, for example 120 mm) or plastic (for ammunition of medium caliber, that is to say of less than 75mm).
  • the projectile 2 has a rear portion 2a which penetrates inside the powder bed 4 and which carries a tail 2b.
  • the igniter 5 is disposed in a bore 7 arranged at the base 6.
  • the igniter 5 thus comprises a rear portion 5a whose geometry is complementary to that of the bore 7, for example a threaded portion 5a.
  • the structure of the igniter is not the subject of the present invention and is therefore not shown in detail.
  • the igniter 5 is fixed to the case 3 from the inside and is in abutment against the bottom of the case 3. Sealing means (not shown) are provided between the bottom 3a and the igniter 5.
  • the projectile 2 is fixed to the case 3 by the ring 9 which may be made of plastic.
  • This ring has a front portion 9a which is fixed to the projectile at a belt 2c of the latter.
  • the projectile may be secured to the ring, for example by gluing or by clipping the ring 9 on a groove (not shown) of the projectile.
  • the ring 9 also has a rear portion 9b which caps a bearing 10 fitted at the end of the case 3.
  • the outer surface of the ring 9 is thus in the extension of the outer surface of the case.
  • Such a weld will be achieved by performing a localized heating of the ring and the case, for example by rotating the ring relative to the case using appropriate tools.
  • step A the case 3 is shown bearing its base 6 and fixed on a plate 15 provided with jaws 15a.
  • step B the igniter 5 is placed on the bottom of the case 3 and inside the case (arrow S). Depending on the solution chosen, the igniter will be screwed, glued or only forced into its bore.
  • step C is introduced the propellant charge 4 grains in the case with a measuring tool.
  • step D the case 3 is rotated about its axis 16 for example by means of the plate 15 which will be rotated (arrow ⁇ ) by a motor (not shown).
  • the jaws 15a of the plate 15 hold the case 3. This rotation has the effect of digging an axial portion 14 of the propellant charge whose outer surface takes a substantially parabolic shape 13.
  • step E it is then possible (step E) to place the projectile 2 in the case, the hollow axial portion 14 of the powder bed allowing the passage of the rear of the projectile.
  • the projectile 2 has been previously secured to the ring 9 in another step (not shown).
  • the projectile may be glued to the ring 9 or may be fixed by elastic deformation.
  • case 3 and the ring 9 are made of plastic material, it will be possible to frictionally weld the ring 9 on the case 3 while the projectile finds its place in the cavity 14. If it is desired to fix the case and the ring by gluing the glue will be placed on the bearing surface 10 before placement of the ring 9.
  • Step F finally shows the fully assembled ammunition.
  • step F If one achieves fastening by riveting the ring 9 on the case 3, one will perform this operation after stopping the rotation (step F).
  • the invention has been described with reference to a conventional feathered munition. It is of course possible to make it on other types of ammunition of any caliber, for example on telescoped munitions (munitions in which the projectile is completely inside the case).
  • the nature of the projectile does not matter.
  • the invention may be implemented with war projectiles or with exercise projectiles.
  • the invention it is also possible to implement the invention with a munition of any caliber, for example with a pomegranate type of ammunition intended to be launched by a specific weapon system (grenades 40mm low speed for example). It will also be possible to implement the invention with an ammunition devoid of a metal base, for example an ammunition whose case is completely made of plastic.
  • the invention may be implemented with a munition in which the igniter is attached to the case from the outside, before or after the powder case has been loaded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP06291139A 2005-07-25 2006-07-12 Verfahren zur Herstellung einer Munition Withdrawn EP1748274A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0507906A FR2888924B1 (fr) 2005-07-25 2005-07-25 Procede de montage d'une munition

Publications (1)

Publication Number Publication Date
EP1748274A1 true EP1748274A1 (de) 2007-01-31

Family

ID=36146925

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06291139A Withdrawn EP1748274A1 (de) 2005-07-25 2006-07-12 Verfahren zur Herstellung einer Munition

Country Status (2)

Country Link
EP (1) EP1748274A1 (de)
FR (1) FR2888924B1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257892A (en) * 1964-07-17 1966-06-28 Olin Mathieson Rim-fire improvement
FR1585852A (de) * 1964-03-03 1970-02-06
US3850101A (en) * 1973-07-26 1974-11-26 V Sower Electrical primer
FR2622687A1 (fr) 1987-10-29 1989-05-05 France Etat Armement Chargement propulsif pour munition comportant un projectile empenne ainsi que son procede de realisation
US5443009A (en) * 1993-06-05 1995-08-22 Rheinmetall Gmbh Charge arrangement for cartridge ammunition
US20040000247A1 (en) * 2002-07-01 2004-01-01 Marius Rosu Axial spin method of distributing pyrotechnic charge in an initiator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1585852A (de) * 1964-03-03 1970-02-06
US3257892A (en) * 1964-07-17 1966-06-28 Olin Mathieson Rim-fire improvement
US3850101A (en) * 1973-07-26 1974-11-26 V Sower Electrical primer
FR2622687A1 (fr) 1987-10-29 1989-05-05 France Etat Armement Chargement propulsif pour munition comportant un projectile empenne ainsi que son procede de realisation
US5443009A (en) * 1993-06-05 1995-08-22 Rheinmetall Gmbh Charge arrangement for cartridge ammunition
US20040000247A1 (en) * 2002-07-01 2004-01-01 Marius Rosu Axial spin method of distributing pyrotechnic charge in an initiator

Also Published As

Publication number Publication date
FR2888924B1 (fr) 2007-08-24
FR2888924A1 (fr) 2007-01-26

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