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
  • F42B12/20—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type
  • F42B12/22—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction
  • F42B12/28—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction the projectile wall being built from annular elements
• • 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
• • 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
  • F42B5/045—Cartridges, i.e. cases with charge and missile of telescopic type

Definitions

• TITLE Telescoped ammunition including a shell
• the technical sector of the present invention is that of telescoped ammunition of large and medium caliber, in particular shells and in particular anti-aircraft shells.
• Telescoped munitions have been widely used in military equipment for many years, particularly for feeding guns. They have the major advantage over conventional ammunition, of having a reduced weight for the same power.
• the telescoped munitions can in particular be anti-tank munitions, explosive munitions, training munitions or anti-aircraft munitions.
• DE-3153378 describes a shell whose body consists of a set of discs between which a metal powder is interposed.
• the architecture of the present munition gives the shell a cloud of projectiles whose dimensions and dispersion following the explosion of the charge are predictable and reproducible, taking into account the inevitable margins of error.
• the subject of the invention is therefore a telescoped ammunition consisting of a shell integrated in a casing closed by a base, said shell comprising a warhead, a body of heavy material followed by a cage, the body of said shell consisting of a shell. internal part and an external part, the internal part being of tubular shape and having weakening grooves and the external part being disposed in abutment around the internal part and being formed by a stack of discs, each disc bearing grooves of embrittlement.
• the weakening grooves of the internal part are made longitudinally from the outside to the inside and the grooves of the external part are made longitudinally from the inside to the outside.
• the external part has a length less than that of the internal part.
• the heavy material constituting the body is tungsten.
• the warhead is placed in support on the internal part of the body and the cage is placed in support on the internal part, said cage containing a time fuse.
• the external profile of the external part is in alignment with that of the warhead and of the cage.
• the internal part is provided at the front with an external machining for receiving the ogive and at the rear with an internal bore for the insertion of a pyrotechnic initiator.
• the internal part is provided at the front with a plug.
• the casing consists of three shoes joined together by at least one weakened fixing means.
• the fixing means is constituted by a retaining ring.
• the latter is a sub-calibrated anti-aircraft shell operating airburst.
• An advantage of the ammunition according to the invention lies in the fact that the shell is in the form of a solid piece which is perfectly ballistically stable and does not include any sub-projectile.
• Another advantage of the ammunition according to the invention lies in the simplicity of production by associating with this massive part a warhead and a rear part giving it a ballistic profile without further intervention.
• Yet another advantage of the present invention lies in the fact that the shell is stable on its trajectory after firing.
• Yet another advantage of the present invention lies in the fact that the shell can be easily integrated into its casing without complex intervention.
• the projectile is not encumbered with a structuring body for carrying the load of pellets.
• the ratio between useful mass and total mass is therefore optimized.
• FIG. 1 is a longitudinal section of a munition telescoped according to a first embodiment of the invention
• FIG. 2 is a longitudinal section of a telescoped munition according to a second embodiment of the invention
• FIG. 3 is a perspective view of the central body of the munition according to the invention.
• FIG. 1 represents a first embodiment of the telescoped munition 1 according to the invention.
• this ammunition 1 consists of a shell 20 comprising a body 2, a base 3 and a warhead 4, the whole being incorporated in a casing 19 or shoe conventionally constituted of three parts 5.
• the body 2 consists of a tubular internal part 6 and an external part 7.
• This internal part 6 is in the form of a tubular part containing an explosive composition 15.
• the internal part 6 is closed towards the front. by a plug 8, fixed in an internal bore 22 made at its front end, and rearwards by a pyrotechnic initiator 9, screwed into an internal bore 23 made at its rear end.
• This internal part 6 is also provided on its external circumference with weaknesses in the form of weakness grooves 16 made from the outside to the inside.
• the explosive composition 15 is a pyrotechnic charge intended to explode in flight so as to cause the dislocation of the internal and external parts of the shell as will be explained below.
• the external part 7 consists of discs 7 threaded around the internal part 6.
• the discs bear on their internal surface longitudinal weakening grooves visible in FIG. 3. These discs 7 are held in position at the front by the warhead. 4 and at the rear by the cage 10.
• the nose cone and the cage are force-fitted with a certain clamping on the external machining operations 21 and 24 carried out respectively at the front and rear ends of the internal part 6.
• the ogive 4 is resting against the first disc 7 and the cage 10 rests against the last disc 7.
• the cage 10 is of substantially cylindrical shape and contains a chronometric fuse 11 fixed in alignment with the pyrotechnic initiator 9 which is intended to initiate the explosive composition 15 after a certain time.
• the shoes 5 are conventionally held together at the rear by a weakened retaining ring 12 and at the front by a slip belt 14, both intended to break when exiting the launch tube.
• FIG. 2 shows in longitudinal section another embodiment of the ammunition 1.
• the overall structure is the same as in the embodiment shown in FIG. 1, and the same references designate the same elements.
• the base 3 has a different structure in that it comprises a lip 18 covering the cage and coming into close abutment with the casing 19.
• FIG. 3 there is shown a perspective view of the body 2 of the ammunition 1. It shows the tubular internal part 6 provided with its longitudinal external grooves 16.
• the discs 7 carry longitudinal weakening grooves 17 at their internal walls.
• the operation of the telescoped munition 1 is as follows.
• the ammunition 1 is launched and on leaving the barrel, the entry of air into the funnel-shaped front end of the shoes 5 subjects the weakened fixing means 12 to a tension which causes it to break and therefore releases. shell 2 of the envelope formed by the three shoes 5.
• the shell contains a chronometric fuse 11 which is initiated and whose operation is programmed to initiate composition 15 after a certain period of time.
• the triggering of the chronometric fuse 11 contained in the cage 10 ignites the pyrotechnic initiator 9 which causes the detonation of the explosive composition 15. 1 / consecutive explosion causes the dislocation of the body 2 in a shower of fragments at very high speed. Since these are heavy fragments, the destruction capacity of the intended targets is very high.
• Ammunition 1 being an anti-aircraft shell
• the cloud of fragments is particularly effective for destroying ammunition in flight.
• the original structure of the munition 1 according to the invention allows the production of fragments of predetermined sizes and shapes, therefore affecting a predictable and reproducible dispersion.
• the ammunition 1 described allows the body 2 made up of the internal 6 and external 7 parts to burst into regular fragments of predetermined shapes by the lines of weakness 16 and 17.
• the ammunition 1 has a predictable and constant effect of formation of 'a cloud of fragments ensuring a more easily extrapolable destruction of the intended target.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Portable Nailing Machines And Staplers (AREA)
• Vibration Dampers (AREA)
• Piles And Underground Anchors (AREA)
• Pressure Vessels And Lids Thereof (AREA)
• Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=69157916

Family Applications (1)

Country Status (5)

Families Citing this family (2)

Family Cites Families (33)

• 2019
  • 2019-07-04 FR FR1907438A patent/FR3098292B1/fr active Active
• 2020
  • 2020-07-06 US US17/624,688 patent/US11796293B2/en active Active
  • 2020-07-06 WO PCT/FR2020/000198 patent/WO2021001607A1/fr unknown
  • 2020-07-06 KR KR1020227002155A patent/KR20220030251A/ko unknown
  • 2020-07-06 EP EP20753787.9A patent/EP3994421A1/de active Pending

Also Published As

Similar Documents

Legal Events