EP2108916B1 - Munition de gros calibre chargée par l'arrière - Google Patents

Munition de gros calibre chargée par l'arrière Download PDF

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Publication number
EP2108916B1
EP2108916B1 EP09290227A EP09290227A EP2108916B1 EP 2108916 B1 EP2108916 B1 EP 2108916B1 EP 09290227 A EP09290227 A EP 09290227A EP 09290227 A EP09290227 A EP 09290227A EP 2108916 B1 EP2108916 B1 EP 2108916B1
Authority
EP
European Patent Office
Prior art keywords
dome
skirt
base
large calibre
ammunition according
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.)
Active
Application number
EP09290227A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2108916A1 (fr
Inventor
Nicolas Caillaut
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
Publication of EP2108916A1 publication Critical patent/EP2108916A1/fr
Application granted granted Critical
Publication of EP2108916B1 publication Critical patent/EP2108916B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/18—Caseless ammunition; Cartridges having combustible cases
    • F42B5/181—Caseless ammunition; Cartridges having combustible cases consisting of a combustible casing wall and a metal base; Connectors therefor

Definitions

  • the technical sector of the present invention is that of large caliber ammunition for tank gun and having a fuel sleeve or skirt which is charged with propellant powder from the rear of the bushing.
  • Munitions with a combustible skirt are well known.
  • the skirt or fuel case carries at one end a projectile and is closed at its other end by a metal base.
  • the patent FR-A-2799831 describes an ammunition of this type in which the combustible skirt is attached to a dome by rivets, the dome being capped by the cap. Fixing means are provided between the dome and the base.
  • a major disadvantage of this munition lies in the complex organization of the assembly requiring many manipulations.
  • Another disadvantage lies in the risk of separation of the connecting rivets between the skirt and the dome.
  • the object of the present invention is to provide a rear loadable ammunition comprising means for fixing the base in a simple manner offering great strength when the ammunition is subjected to tensile and torsional forces.
  • the invention therefore relates to a large caliber ammunition consisting of a projectile attached to a fuel skirt closed by a base, a connecting dome being provided between the skirt and the base, the connecting dome having a first cooperating side wall with the skirt and a second side wall extending the first and cooperating with the base, said dome comprising means ensuring its connection with the skirt, characterized in that the connecting means can be folded by the cap on the side wall of the skirt combustible.
  • the connecting means are fixed at the junction of the first and second side walls.
  • the connecting means are constituted by flexible tongues.
  • the flexible tabs are provided with grooves for locking the dome on the skirt.
  • the tabs are integrated in the dome.
  • the tabs are attached to the dome by a fixing means.
  • the dome comprises a central ring secured to the side wall by arms, said ring having a receiving bore of an igniter.
  • the arms are in the form of convex curvature arcs provided with means for centering the base.
  • the centering means are constituted by bosses intended to cooperate with complementary notches of the base.
  • the igniter is maintained in the bore on one side by a lugs / notches system and on the other by an elastic ring.
  • the igniter is connected to the base using a nut.
  • a first advantage of the munition according to the invention lies in the simplification of manufacture which requires only simple manipulations and requiring no qualification.
  • Another advantage lies in the resistance obtained from the skirt / dome / base connection.
  • Another advantage lies in the fact that the assembly does not require any assembly rivet.
  • a large caliber ammunition for a tank gun includes a projectile (not shown in the figures), which is integral with a fuel skirt containing a propellant charge.
  • a cap closes the fuel skirt at its back and allows firing from the barrel.
  • This type of ammunition is intended to be fired by a tank gun.
  • different devices have been devised, and the invention relates to the use of an intermediate dome between the skirt and the metal base of the munition.
  • FIG. 1 That's why on the figure 1 , there is shown a section of the rear part of a munition 1 having a fuel skirt 2, a dome 3 and a base 4.
  • the skirt 2 is combustible and conventionally made of cardboard impregnated with nitrocellulose.
  • the dome 3 is a plastic part and the base 4 is a massive metal piece.
  • the skirt 2 is provided with two successive taper 5 and 6 whose role will be explained below.
  • the dome 3 carries an igniter 7 held by an elastic ring 8 which engages in a groove of this dome.
  • the dome comprises connecting means 10 cooperating with the skirt and the base.
  • the base 4 is provided with a lip 9 (for example of rubber) which is intended to seal during the initiation of loading at the start of the gun.
  • the dome 3 comprises a first side wall 11 intended to cooperate with the skirt 2 and a second side wall 12 extending the first and intended to cooperate with the base 4.
  • the side wall 12 has an outside diameter slightly greater than that of the wall 11 so as to form a stop means of the skirt 2.
  • the dome comprises the connecting means 10 and in the figure we see that they are fixed at the junction of the first 11 and second 12 side walls.
  • the connecting means 10 are either integrated into the dome during the manufacture thereof or reported in any manner for example by gluing. They are in the form of flexible tongues 10a and 10b. In an advantageous embodiment, it is possible to provide four pairs of tongues regularly distributed around the outer wall of the dome.
  • the dome 3 comprises a central ring 13 secured to the side wall 11, 12 by arms 14.
  • the ring 13 has a bore 15 for receiving the igniter 7.
  • the arms 14 are in the form of arches of curvature convex each provided with centering means of the base 4. These centering means are constituted by bosses 18 intended to cooperate with complementary notches 19 carried by the base 4 (and visible on the figure 3 ).
  • the free space 16 between each arm 14 allows the introduction of the powder of the load. It is also seen that the igniter 7 is provided with notches 17 intended to cooperate with the dome 3 during its fixing.
  • the exploded view shows the initial disposition of the igniter 7 of the dome 3 and the elastic ring 8.
  • the assembled view shows the attachment of the igniter 7 in the hole 15 of the dome being fixed by the elastic ring 8 15, the igniter 7 is fixed rigidly to the dome 3. It can be seen that the igniter 7 has, after fixing, a threaded portion which projects from the dome.
  • the dome 3 is represented vertically 4. This view makes it possible to see, on the one hand, part of the connecting means of the dome 3 and of the base 4 and, on the other hand, a part of the connection means with the igniter.
  • the base 4 is provided with notches 19 in which the bosses 18 (visible on the figure 2 ) come to engage. The introduction of these bosses into the notches 19 makes it possible to rotate the base 4 and the dome 3 in rotation.
  • the dome 3 is provided at the level of the central ring 13 with lugs 20 on which the notches 17 of the igniter 7 engage, thus ensuring immobilization in rotation of this lighter with respect to the dome 3 .
  • FIG 4 there is shown a section showing an intermediate phase of mounting the three elements.
  • the dome 3, assembled with the igniter as shown on the figure 2 is introduced into the skirt 2.
  • the skirt 2 is positioned at the wall 11 and therefore abuts against the edge of the wall 12.
  • the base 4 then caps the dome 3 causing the application of the tabs 10a 10b against the shrinkage 6 of the skirt.
  • the striations 21 of the tongues ensure the maintenance of the dome 3 on the skirt 2. It is arranged that, once folded, the tabs 10 are not in excess relative to the profile of the narrowing 5 of the skirt.
  • this structure makes it possible to improve the chargeability of the skirt and to simplify the integration of the ammunition during the embedding.

Landscapes

  • General Engineering & Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Lighters Containing Fuel (AREA)
  • Stringed Musical Instruments (AREA)
  • Cookers (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Slot Machines And Peripheral Devices (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Glass Compositions (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
EP09290227A 2008-04-09 2009-03-30 Munition de gros calibre chargée par l'arrière Active EP2108916B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0801943A FR2930026B1 (fr) 2008-04-09 2008-04-09 Munition de gros calibre chargee par l'arriere

Publications (2)

Publication Number Publication Date
EP2108916A1 EP2108916A1 (fr) 2009-10-14
EP2108916B1 true EP2108916B1 (fr) 2011-08-17

Family

ID=40225452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09290227A Active EP2108916B1 (fr) 2008-04-09 2009-03-30 Munition de gros calibre chargée par l'arrière

Country Status (6)

Country Link
US (1) US8015923B2 (es)
EP (1) EP2108916B1 (es)
AT (1) ATE520953T1 (es)
ES (1) ES2371812T3 (es)
FR (1) FR2930026B1 (es)
IL (1) IL198019A (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2930026B1 (fr) * 2008-04-09 2010-05-07 Nexter Munitions Munition de gros calibre chargee par l'arriere
US9625242B1 (en) * 2015-02-12 2017-04-18 The United States Of America As Represented By The Secretary Of The Army Igniter for modular artillery charge system
FR3092660B1 (fr) 2019-02-13 2022-04-01 Nexter Munitions Fusee pour un projectile destine a etre tire par un canon

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US498856A (en) * 1893-06-06 Cartridge-shell
US189069A (en) * 1877-04-03 Improvement in cartridges
FR224197A (es) * 1892-04-16 1892-09-07
US1002038A (en) * 1911-01-03 1911-08-29 Western Cartridge Co Cartridge.
US3590740A (en) * 1968-11-12 1971-07-06 Herter Inc S Plastic shot shell and base wad
NL156011B (nl) * 1970-08-31 1978-02-15 Philips Nv Elektrische kabel met eindcontact.
US3732821A (en) * 1971-05-25 1973-05-15 Us Army Nose ogive for nonlethal projectile
DE2705278C2 (de) * 1977-02-09 1984-02-23 Rheinmetall GmbH, 4000 Düsseldorf Stummelhülse mit Liderung
US4187271A (en) * 1977-04-18 1980-02-05 Owens-Corning Fiberglas Corporation Method of making same
CA1332321C (en) * 1988-02-10 1994-10-11 Wilford E. Martwick Cased telescoped ammunition having features augmenting cartridge case dimensional recovery by case skin tube
DE8812000U1 (de) * 1988-09-22 1990-02-08 Rheinmetall GmbH, 4000 Düsseldorf Granatengeschoß
US5069137A (en) * 1990-05-17 1991-12-03 Honeywell Inc. Cased telescoped ammunition round
DE29607840U1 (de) * 1996-03-14 1996-09-05 Comet GmbH Pyrotechnik-Apparatebau, 27574 Bremerhaven Geschoßsimulationsmittel
US5747723A (en) * 1996-11-26 1998-05-05 The United States Of America As Represented By The Secretary Of The Army Modular artillery charge system
US5834681A (en) * 1997-06-20 1998-11-10 Defense Technology Corporation Of America Reloadable high-low pressure ammunition cartridge
FR2799831B1 (fr) 1999-10-13 2001-11-30 Giat Ind Sa Dispositif de fixation d'un culot obturateur sur un etui de munition et culot adapte a un tel dispositif
US6343552B1 (en) * 2000-06-06 2002-02-05 Alliant Techsystems Inc. Solvent application system
US7165496B2 (en) * 2003-11-06 2007-01-23 Reynolds S Paul Piston head cartridge for a firearm
FR2869101B1 (fr) * 2004-04-15 2006-06-02 Giat Ind Sa Munition sans douille et procede de montage d'une telle munition
FR2930026B1 (fr) * 2008-04-09 2010-05-07 Nexter Munitions Munition de gros calibre chargee par l'arriere

Also Published As

Publication number Publication date
IL198019A0 (en) 2009-12-24
FR2930026A1 (fr) 2009-10-16
US20100071578A1 (en) 2010-03-25
ES2371812T3 (es) 2012-01-10
EP2108916A1 (fr) 2009-10-14
ATE520953T1 (de) 2011-09-15
IL198019A (en) 2013-01-31
US8015923B2 (en) 2011-09-13
FR2930026B1 (fr) 2010-05-07

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