Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F41—WEAPONS
  • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
  • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
  • F41A21/26—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means specially adapted for recoil reinforcement, e.g. for training purposes
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F42—AMMUNITION; BLASTING
  • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
  • F42B8/00—Practice or training ammunition
  • F42B8/02—Cartridges
  • F42B8/04—Blank cartridges, i.e. primed cartridges without projectile but containing an explosive or combustible powder charge

Definitions

• the invention relates to a medium-caliber training projectile for an automatic rapid-fire weapon and to a system comprising such a training projectile and a weapon barrel.
• DE-A-37 33 216 discloses a weapon barrel for automatic weapons for firing practice ammunition, in particular round cartridges, a limiter sleeve being attached in the barrel in the area of a cartridge chamber and the weapon lock and a nozzle insert in the front part of the barrel near the muzzle as a gas throttle are.
• the limiter sleeve is designed so that a sharp cartridge cannot be pushed fully into the weapon barrel, so that the weapon remains inoperative in this case.
• Only appropriately modified practice ammunition, which is thinner in the area of the projectile tip, can dip into the limiter sleeve to such an extent that the cartridge is completely accommodated in the tube.
• This weapon barrel which is preferably a suitably modified weapon barrel which is retired for use with live ammunition, is exchanged for the firearm barrel for firing live ammunition when blank cartridges are fired.
• a nozzle insert with an optionally adjustable nozzle cross-section, when the training cartridge is ignited, a gas pressure necessary and sufficient for the automatic weapon function is built up in the barrel, which ensures the lock function and the ejection of the cartridge.
• the blank cartridge does not leave the tube, it is only simulated by the blank charge, blast, muzzle smoke and, if necessary, muzzle flash.
• This system can be used for small-caliber practice ammunition, but requires structural adjustments to the weapon barrel and the practice ammunition. Also with this Construction of the gas pressure required for medium-caliber rapid firearms practically unattainable. With conventional 40 mm practice cartridges, gas pressures would have to be made available that could switch the approximately 7 kg weapon lock.
• a small-caliber cartridge for shot simulation with a laser beam which has a sleeve with a longitudinal bore, the outer shape of the sleeve corresponding to a conventional cartridge case with an inserted bullet. Even with this cartridge, it is not possible to operate a weapon lock.
• the invention has for its object to provide a training projectile, in particular for large-caliber rapid firearms, with which considerable gas pressures are built up in the weapon barrel in order to actuate even heavy weapon locks. Furthermore, a system consisting of such a practice projectile and an insert for a weapon barrel of an automatic rapid-fire weapon is to be specified, which is reliable in its function, is simple in construction, consists of only a few parts and can therefore be produced inexpensively.
• the practice floor has a continuous central channel which contains a propellant charge in the rear area of the floor and is closed off at the rear by an ignition charge for the propellant charge.
• the channel is open at the top of the floor.
• Practice floor and weapon barrel point here Devices that prevent the insertion of a sharp bullet.
• the open channel of the training projectile is preferably used for this purpose: in the open end of the channel, when the training projectile is completely inserted into the weapon barrel, the mandrel of an insert is inserted into the weapon barrel, this application delimiting a gas space in front of the bow of the projectile.
• the insert can also be provided with overflow channels.
• the thorn ensures that a sharp bullet cannot be inserted instead of a training bullet, as this is locked at the top of the bullet and therefore cannot completely leave the weapon lock.
• the rapid firearm would be inoperative in such a case.
• the propellant charge is ignited by the ignition charge, e.g. Using a firing pin, the propellant gases spread vehemently towards the open end of the central channel of the training floor, whereby a high gas pressure quickly builds up in the relatively small space between the propellant charge and the spike, which quickly drives the projectile back into the weapon lock and this forwarded.
• the diameter of the mandrel of the insert is preferably slightly smaller than the clear diameter of the central channel of the projectile, so that there is a gap between the channel and the mandrel through which the propellant gases escape shortly after the propellant charge is ignited and via the overflow channels acting as a gas throttle be directed towards the muzzle of the weapon barrel.
• the practice floor can essentially be built up from four parts, namely a floor, a central tube inserted into the floor and running in the longitudinal direction of the floor to receive the propellant charge, an ignition cap inserted into the floor to ignite the propellant charge and a one-piece projectile body that extends from the floor
• the central tube is encased, but leaves the opening of the central tube at the top of the floor free.
• the projectile body is preferably made of injection molded plastic.
• the floor is usually a metal part and preferably made of aluminum or steel; the central tube is preferably made of steel in order to withstand the gas pressures which occur when the propellant charge is ignited.
• Figure 1 is a sectional view of a practice bullet for a 40 mm rapid firearm according to the invention
• FIGS. 2 to 6 representations of the simulated firing of a training floor from the loading of the floor to the ejection
• Figure 7 is a partially sectioned view of a slightly modified practice floor.
• the practice floor 1 has a floor 2 made of aluminum, a central steel tube 4 screwed into a central thread 3 of the floor and a cap-shaped floor body 5 extending from the floor, which is a one-piece molded plastic part and up to the front end of the steel tube 4 is sufficient.
• the rear half of the steel tube 4 is filled with a propellant charge 6, which can be ignited by means of a firing pin via an ignition cap 7 inserted into the floor of the floor in the floor of the floor.
• the steel tube has at its tip a free opening 8, at the edge of which the projectile body 5 is directly connected.
• the central steel tube 4 can be interrupted approximately in the middle by a partition 9, in which a nozzle 10 is provided, which connects the space of the propellant charge 6 with the empty space of the steel tube to the opening 8.
• 21 denotes a weapon barrel of an automatic rapid-fire weapon, not shown.
• An insert 22 is inserted into this weapon barrel from the front end, this insert consisting of a barrel 23 and a piston 24.
• the tube 23 lies flush against the inside of the weapon barrel 21 and is provided at the end opposite the piston 24 with a stop 25 which bears against the front edge of the weapon barrel 21.
• the tube 23 is held by a union nut 26 with a central opening 27 which is screwed into an external thread of the weapon barrel 21.
• the piston 24 has a central mandrel 28, the outside diameter of which is smaller than the inside diameter of the steel tube 4.
• the length of the mandrel corresponds at most to the distance between the opening 8 of the steel tube 4 and the partition 9 in the steel tube.
• a few overflow channels 29 are also provided in the piston 24 around the central mandrel 28.
• FIGS. 2 to 7 show the functional sequence of the automatic rapid-fire weapon when used with the training floor.
• FIG. 2 shows the time at which the practice bullet 1 is loaded into the weapon barrel 21 by the breech: the central mandrel 28 of the insert 22 penetrates the central steel barrel 4.
• the propellant gases 31 generated during the burning of the propellant charge shown schematically in FIG. 4, spread in the direction of the projectile tip, this spreading being throttled through the gap between the central mandrel 28 and the clear width of the central steel tube 4.
• the gases flow into the gas space 30 between the forward end of the propellant charge and the tip of the mandrel; a high gas pressure develops here, which, as indicated by the arrow in FIG. 4, already moves the practice floor back towards the castle.
• the training projectile has completely slid from the central mandrel 28 and has been returned to the lock, from which it is subsequently ejected.
• the Pressure build-up in the weapon barrel 21 can be optimized to drive back the practice floor in the lock.
• the high forces necessary for the function of the lock of the automatic weapon can also be achieved. It is also possible, by means of the specified dimensioning and, of course, the composition of the propellant charge at the mouth of the weapon barrel 21 during simulated firing, to simulate the phenomena which occur with live ammunition, ie lightning, bang and smoke effects.
• FIG. 1 A modified training floor is shown in FIG.
• the same reference numerals are used for the same elements as in the exemplary embodiment according to FIG. 1.
• the propellant charge 6 located at the rear is covered by a destructible cover cap or a bursting disk 71; the partition with the nozzle is missing.
• the diameter of the practice bullet is reduced in the bow area, so that a stop 72 results, which then abuts a corresponding stop 73 of the weapon barrel 21, which is indicated schematically here.
• the weapon barrel in this bow area of the projectile has a smaller diameter than in the rear area of the projectile. Sharp ammunition that has the same diameter in the bow and stern area cannot be inserted into this barrel.
• the launch functions are the same as described above; the mandrel that dipped into channel 8 in the above version is not necessary in this version. However, the mandrel and stop can also be used together. Likewise, it is possible not to use a gun barrel for to modify live ammunition through an insert, but to provide its own practice tube. If lightning, smoke and bang development are not simulated, the above-mentioned overflow channels in the gas throttle can also be omitted, so that the entire gas pressure is used to propel the projectile back and advance the weapon lock.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Toys (AREA)
• Steps, Ramps, And Handrails (AREA)
• Central Heating Systems (AREA)
• Floor Finish (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7905089

Family Applications (1)

Country Status (7)

Families Citing this family (18)

Family Cites Families (16)

• 1999
  • 1999-04-19 DE DE19917649A patent/DE19917649C2/de not_active Expired - Fee Related
• 2000
  • 2000-04-19 CA CA002406924A patent/CA2406924A1/fr not_active Abandoned
  • 2000-04-19 AT AT00936645T patent/ATE278176T1/de not_active IP Right Cessation
  • 2000-04-19 DE DE50008000T patent/DE50008000D1/de not_active Expired - Fee Related
  • 2000-04-19 ES ES00936645T patent/ES2230112T3/es not_active Expired - Lifetime
  • 2000-04-19 EP EP00936645A patent/EP1171748B1/fr not_active Expired - Lifetime
  • 2000-04-19 US US09/959,170 patent/US6886467B1/en not_active Expired - Fee Related
  • 2000-04-19 WO PCT/DE2000/001281 patent/WO2000063635A1/fr active IP Right Grant

Non-Patent Citations (1)

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