EP2088393A2 - Geschoss zur Streuung von Projektilen - Google Patents

Geschoss zur Streuung von Projektilen Download PDF

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Publication number
EP2088393A2
EP2088393A2 EP09290082A EP09290082A EP2088393A2 EP 2088393 A2 EP2088393 A2 EP 2088393A2 EP 09290082 A EP09290082 A EP 09290082A EP 09290082 A EP09290082 A EP 09290082A EP 2088393 A2 EP2088393 A2 EP 2088393A2
Authority
EP
European Patent Office
Prior art keywords
shell
projectiles
grooves
front wall
partition
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Withdrawn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
EP09290082A
Other languages
English (en)
French (fr)
Other versions
EP2088393A3 (de
Inventor
Franck Melendez
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 EP2088393A2 publication Critical patent/EP2088393A2/de
Publication of EP2088393A3 publication Critical patent/EP2088393A3/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Withdrawn legal-status Critical Current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
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
    • 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
    • F42B5/03—Cartridges, i.e. cases with charge and missile containing more than one missile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B7/00—Shotgun ammunition
    • F42B7/02—Cartridges, i.e. cases with propellant charge and missile
    • F42B7/04—Cartridges, i.e. cases with propellant charge and missile of pellet type
    • F42B7/043—Cartridges, i.e. cases with propellant charge and missile of pellet type with shot-scattering means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B7/00—Shotgun ammunition
    • F42B7/02—Cartridges, i.e. cases with propellant charge and missile
    • F42B7/12—Cartridge top closures, i.e. for the missile side

Definitions

  • the technical sector of the present invention is that of shells containing dispersible projectiles.
  • the aerodynamic pressure exerted on the lid ensures the dispersion of the balls. Nevertheless, the cluster of marbles remains in block at the beginning of trajectory (about 50 meters) before dispersing gradually in the form of sheaf.
  • the object of the present invention is to provide a shell in which the projectile dispersion effect is ensured at the earliest after the exit of the weapon tube. This dispersion will be ensured by a controlled deformation of the body containing the projectiles.
  • the invention therefore relates to a shell containing dispersible projectiles disposed in a body provided with weakening grooves, characterized in that the body is closed by a front wall integral with the body, the front partition which is provided with an open cavity outward and bounded by a side wall.
  • the front partition has embrittlement grooves.
  • the front partition carries a central bead provided with a bore.
  • the shell comprises wedging means arranged opposite the front wall and compressible by the projectiles during firing of the shell.
  • the grooves of the body extend through the grooves of the front partition.
  • the grooves are located in inclined planes with respect to the axis of the shell.
  • the wedging means consist of a layer of deformable elastomer.
  • the projectiles are balls made of metallic material.
  • the side wall is provided with a recess in which a ring is disposed, said ring being the caliber of the shell.
  • the body is closed by a base bearing against the wedging means.
  • a first advantage of the shell according to the invention resides in the fact that it generates a jet of projectiles very quickly after the exit of the barrel without agglomeration of these projectiles.
  • the shell 1 according to the invention is an ammunition when it is associated with a cartridge 12 containing a propellant charge, to be launched by a barrel or a weapon tube.
  • This cartridge is quite classic and it is not necessary to describe it in more detail.
  • the munition thus formed can be used for the purpose of clearing terrain, destroying obstacles, piercing walls, etc.
  • the range or range of action of such a munition is adapted according to the needs of the the user.
  • the shell 1 shown in longitudinal section according to the figure 1 consists of a body 2 closed by a front wall 3 formed of a single piece with the body. This body is therefore monobloc.
  • This body 2 contains projectiles 6 which are dispersible under the aerodynamic effect at the beginning of trajectory as will be explained below. These projectiles are not shown in the figures. They may be made of a sufficiently heavy material, for example metal (such as steel).
  • steel balls with a mass of the order of 7 to 10 grams have been used.
  • these projectiles may be of any shape and mass provided they are endowed with sufficient kinetic energy to cause the impact of the necessary destruction impact.
  • the shell 1 is provided at its rear part with wedging means 5, arranged opposite the front wall 3, and held against the projectiles 6 by a base 4 screwed into the body 2.
  • wedging means 5 can be made of any suitable material, for example an elastomer disc.
  • the base 4 receives the thrust generated by the propellant charge during launch.
  • This base is for example made of aluminum alloy.
  • the base 4 is extended by the cartridge 12 partially shown in the drawing.
  • a belt 11 is interposed between the base 4 and the body 2. It ensures gas tightness when firing the shell.
  • the front wall 3 of the shell delimits a cavity 9 open towards the outside and bordered by a side wall 13 provided with a recess 13a. It also carries a central bead 8a provided with a bore 8b.
  • the front wall 3 has at the bottom of the cavity 9 embrittlement grooves 10 (here five grooves: 10a, 10b, 10c, 10d and 10e).
  • the bore 8b makes it possible to adjust the thickness of material separating the end of the grooves 10 and this bore 8b. This delays the opening of the partition before 3 with respect to the deformation by compression of the body 2 in the middle.
  • the front partition 3 is also provided with a ring 7 made of elastomer, disposed in the recess 13a and clamped against the side wall 13 to stiffen it.
  • the ring 7 is the caliber of the ammunition and it completes the aerodynamic profile of the body 2.
  • FIG 2 there is shown a view along the direction F ( figure 1 ) showing the front partition 3 provided with grooves 10a-10e and their arrangement with respect to the central bead 8a. It can be seen in this figure that the grooves are regularly distributed angularly and that they are made in planes that are not radial with respect to the body 2.
  • grooves 14 which are formed in the thickness of the side wall of the body 2. These grooves are in planes which are inclined with respect to the axis of the shell 1 and regularly distributed angularly with respect to this axis.
  • the grooves 14 could alternatively be made according to generatrices of the body parallel to the axis of the body.
  • the inclined shape of the grooves makes it possible to slow down in a certain way the dispersion of the projectiles out of the body 2 and thus facilitates the separation of the different projectiles.
  • the grooves 14 extend through the grooves 10 of the front wall 3 so as to constitute a continuous breaking line of all the body 2. There are therefore five grooves 14 regularly distributed angularly.
  • the operation is as follows. During firing of the ammunition, the base 4 of the shell 1 receives the thrust and the projectiles 6 crush inertia the wedging means 5 which generates a free space in the body 2.
  • the front partition 3 receives the aerodynamic flow at the cavity 9. This results in an axial plastic deformation in compression of the partition 3 and the body 2.
  • the body 2 then increases in diameter at level of its median plane 2a ( figure 1 ).
  • the projectiles can not remain agglomerated in the form of a block.
  • the compression mechanism of the wedging means 5 and then the sequential rupture of the body 2 and the partition 3 by the radial deformation as a result of the aerodynamic thrust exerted on the front wall 3 causes the dispersion of the projectiles which can not remain agglomerated. This results in the generation of a sheaf at a reduced range of action from the barrel of the weapon (the dispersion occurs between 5 and 10 meters from the barrel of the weapon).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Toys (AREA)
EP09290082A 2008-02-11 2009-02-04 Geschoss zur Streuung von Projektilen Withdrawn EP2088393A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0800705A FR2927417B1 (fr) 2008-02-11 2008-02-11 Obus de dispersion de projectiles

Publications (2)

Publication Number Publication Date
EP2088393A2 true EP2088393A2 (de) 2009-08-12
EP2088393A3 EP2088393A3 (de) 2010-02-10

Family

ID=39864654

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09290082A Withdrawn EP2088393A3 (de) 2008-02-11 2009-02-04 Geschoss zur Streuung von Projektilen

Country Status (2)

Country Link
EP (1) EP2088393A3 (de)
FR (1) FR2927417B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9506732B2 (en) * 2014-11-19 2016-11-29 Schultz Waterfowl, Llc. Shotgun shell wad
CN113390304A (zh) * 2021-05-24 2021-09-14 南京理工大学 一种可调速的抛撒装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE689936A (de) 1966-11-18 1967-05-02
FR2172572A5 (de) 1972-02-18 1973-09-28 Lacroix Soc E
DE10258247B3 (de) 2002-12-13 2004-02-26 Bernd Fickert Schrotpatrone, Schrot und Verfahren zur Herstellung des Schrots
US6988450B1 (en) 2002-09-25 2006-01-24 The United States Of America As Represented By The Secretary Of The Army Anti-personnel ammunition
WO2007065977A1 (en) 2005-12-09 2007-06-14 Kimmo Martikainen Shotgun cartridge for shotgun shooting and method in shotgun shooting

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1427005A (en) * 1972-03-01 1976-03-03 Imp Metal Ind Kynoch Ltd Shotgun cartridges and shot concentrators therefor
US4815389A (en) * 1987-07-31 1989-03-28 Remington Arms Company Shot cartridge
DE102004035371A1 (de) * 2003-08-05 2005-03-10 Ruag Ammotec Gmbh Teilzerlegungsgeschoss mit Doppelkern

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE689936A (de) 1966-11-18 1967-05-02
FR2172572A5 (de) 1972-02-18 1973-09-28 Lacroix Soc E
US6988450B1 (en) 2002-09-25 2006-01-24 The United States Of America As Represented By The Secretary Of The Army Anti-personnel ammunition
DE10258247B3 (de) 2002-12-13 2004-02-26 Bernd Fickert Schrotpatrone, Schrot und Verfahren zur Herstellung des Schrots
WO2007065977A1 (en) 2005-12-09 2007-06-14 Kimmo Martikainen Shotgun cartridge for shotgun shooting and method in shotgun shooting

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9506732B2 (en) * 2014-11-19 2016-11-29 Schultz Waterfowl, Llc. Shotgun shell wad
CN113390304A (zh) * 2021-05-24 2021-09-14 南京理工大学 一种可调速的抛撒装置
CN113390304B (zh) * 2021-05-24 2022-07-22 南京理工大学 一种可调速的抛撒装置

Also Published As

Publication number Publication date
FR2927417B1 (fr) 2013-12-13
EP2088393A3 (de) 2010-02-10
FR2927417A1 (fr) 2009-08-14

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