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WO2002012820A1 - Projectile pour munition d'entrainement a trajectoire courte - Google Patents

Projectile pour munition d'entrainement a trajectoire courte Download PDF

Info

Publication number
WO2002012820A1
WO2002012820A1 PCT/EP2001/008347 EP0108347W WO0212820A1 WO 2002012820 A1 WO2002012820 A1 WO 2002012820A1 EP 0108347 W EP0108347 W EP 0108347W WO 0212820 A1 WO0212820 A1 WO 0212820A1
Authority
WO
WIPO (PCT)
Prior art keywords
projectile
resistance
flight
speed
projectile 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.)
Ceased
Application number
PCT/EP2001/008347
Other languages
German (de)
English (en)
Inventor
Joachim Fibranz
Erich Muskat
Gerhard Schmidtner
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.)
Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
Original Assignee
Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
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
Priority claimed from DE10103396A external-priority patent/DE10103396A1/de
Application filed by Dynamit Nobel AG, Dynamit Nobel GmbH Explosivstoff und Systemtechnik filed Critical Dynamit Nobel AG
Priority to AU2001272554A priority Critical patent/AU2001272554A1/en
Publication of WO2002012820A1 publication Critical patent/WO2002012820A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
    • F42B10/48—Range-reducing, destabilising or braking arrangements, e.g. impact-braking arrangements; Fall-retarding means, e.g. balloons, rockets for braking or fall-retarding
    • F42B10/54—Spin braking means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
    • F42B10/48—Range-reducing, destabilising or braking arrangements, e.g. impact-braking arrangements; Fall-retarding means, e.g. balloons, rockets for braking or fall-retarding
    • 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
    • F42B8/12—Projectiles or missiles

Definitions

  • the invention relates to a projectile for firing training on small arms, such as rifles, pistols on short firing lanes.
  • the combat cartridge 5.56 mm x 45 is mainly used in shooting training. Although this cartridge has the advantage that the shooting behavior corresponds to the realistic circumstances. "However, the disadvantage is that a significant destruction of the target media that is, the washers and the underlying basement catches, and maintain the training cartridges currently used have a dangerous area of more than 1200 m , which requires complex protective measures on the shooting range.
  • the object of the invention is to simplify the handling of exercise cartridges and to make them safer.
  • the invention proposes to provide a speed reduction device in the front part of the projectile in the direction of flight, where the air flows in during flight. This reduces the speed and also the kinetic energy of the projectile, so that damage to the target media is reduced and the danger zone is reduced.
  • two variants are provided for reducing the speed. Both variants can be used individually or in combination.
  • the reducing device in the area of the projectile tip has a braking surface running perpendicular to the direction of flight. This creates an inflow surface with an unfavorable Cd value, which reduces the projectile speed and controls the external ballistic performance, this being based on the design of the diameter and the projectile mass depends.
  • This variant has the advantage that it is easy to manufacture and already effectively reduces the speed of the projectile.
  • a concave recess in the braking surface which causes the air flowing onto the braking surface to be discharged to the circumference of the projectile in a defined manner, so that no currents or eddies which excessively destabilize the projectile occur at the projectile tip.
  • the reducing device has in the front part of the peripheral surface of the projectile at least one resistance surface running in the longitudinal direction for reducing the projectile twist, that is to say the speed of the projectile.
  • the resistance surface causes the swirl imparted to the projectile to be reduced to such an extent that the projectile becomes unstable. As a result, the projectile begins to oscillate, reducing the speed. It is advantageous that the speed is considerably reduced due to the leveling of the projectiles.
  • the circumferential surface has a radially reducing conical region arranged in front of the resistance surface in the direction of rotation of the projectile, so that the resistance surface extends from the circumference of the projectile in the direction of the central axis of the projectile.
  • This structure is very stable, since the resistance surface is, so to speak, excluded from the full material.
  • a plurality of, preferably four, resistance surfaces offset by 90 ° on the circumference can also be provided.
  • the increase in the number of resistance areas requires an increase in the reduction in the swirl of the projectile.
  • a spiral configuration of the resistance surface can also further reduce the projectile swirl, since the surface of the resistance surface is considerably enlarged by the spiral arrangement around the circumference of the projectile.
  • Both variants, especially the combination of the two variants causes the projectile speed to be reduced and thus the maximum range to be shortened, which leads to a reduced danger zone and to less damage to the target media. This is achieved without having to make changes to the weapon.
  • the reduction in speed or the maximum range can be set in a defined manner. So it is possible to create practice cartridges for different requirements. For example, it is possible to reduce the danger zone to less than 650 m and to set a floor meeting point location " at 100 m training distance, which is comparable to that of the combat floor.
  • Fig. 1 shows a projectile according to the invention in side view
  • FIG. 2 shows a sectional view along line II-II in FIG. 1.
  • FIG. 1 shows a projectile 1 with a cylindrical projectile body 2.
  • the projectile body 2 consists of a rear part 3 and a front part 4.
  • the rear part 3 takes up about half the length of the projectile 1.
  • the rear part 3 forms the projectile guide part and can be of over-caliber design, whereby the pressing resistance of the projectile into the pipe transition is increased, which leads to good propellant burn-up and to a better seal against gas slip.
  • the end 5 of the rear part 3 is concave.
  • the front part 4 of the projectile body 2 ends in the projectile tip 6.
  • a reduction device 7 for the speed is provided on the front part 4.
  • the reduction mechanism 7 includes a arranged on the projectile tip 3 braking surface 7a and several "on the periphery 8 arranged resistance surfaces 7b.
  • the braking surface 7a is arranged perpendicular to the longitudinal axis of the projectile and thus also perpendicular to the direction of flight of the projectile 1.
  • a concave recess 9 is present in the braking surface 7a.
  • the concave recess 9 is arranged centrally in the braking surface 7a, i.e. that the center of the concave recess 9 lies on the longitudinal axis of the projectile body 2.
  • the resistance surfaces 7b which form the second part of the reduction device 7, are arranged on the peripheral surface 8 and run parallel to the direction of flight of the projectile 1.
  • the outer edge lying on the circumference and the inner edge of the resistance surface 7b run parallel, so that the resistance surface 7b is conditional has an approximately parallelogram-shaped area due to the conical areas at the projectile tip 3 and at the transition area between the rear part 3 and the front part 4.
  • numerous other shapes are also conceivable, such as a triangular shape.
  • each resistance surface 7b is distributed over the circumferential surface 8 at a uniform distance, that is to say offset by 90 °.
  • the direction of rotation of floor 1 is indicated by the arrows.
  • a radially decreasing conical region 10 is provided in front of each resistance surface 7a.
  • the radius is smallest in front of a resistance surface 7b and the radius is largest at the other end of the conical region 10.
  • a resistance surface 7b connects two conical regions 10, one conical region having its smallest radius on the resistance surface, while the other conical region has its largest radius there.
  • the flight behavior of the projectile 1 is described below.
  • the projectile 1 By firing the propellant, the projectile 1 is accelerated in the barrel of a firearm, and because of the barrel geometry it receives a swirl movement for flight stabilization. Without the reduction device 7 according to the invention, a projectile would fly stably and far, since a conventional projectile with a tapering projectile tip has a very low Cd value. In the projectile 1 according to the invention, the speed of the projectile 1 is reduced by the braking surface 7a and the resistance surfaces 7b, so that the range and penetration force are reduced.
  • the air flowing in from the front hits the braking surface 7a and the concave recess 9 arranged therein.
  • This causes a first reduction in the projectile speed while the flight position of the projectile 1 remains stable.
  • the projectile 1 rotates about its longitudinal axis, the resistance surface 7b forming an air resistance which reduces the swirl of the projectile 1, as a result of which the flight position becomes increasingly unstable until the Floor 1 begins to oscillate. This causes a further drop in the velocity of the projectile 1.
  • the strength and direction of the pendulum movement is determined by the arrangement and the size of the resistance surfaces 7b.
  • the projectile body 2 preferably consists of a biodegradable plastic which is filled with a metal. This can reduce the environmental impact.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

L'invention concerne un projectile pour munition d'entraînement à trajectoire courte, présentant, dans la partie avant (34) du corps de projectile (2), un dispositif de réduction de vitesse (7). Ce dernier (7) présente une surface de freinage (7a) s'étendant perpendiculairement à la direction de la trajectoire, au niveau de l'extrémité de projectile (6) et/ou une surface de résistance (7b) qui réduit la rotation du projectile et s'étend longitudinalement sur la surface périphérique (8) du corps de projectile (2). La vitesse et l'énergie cinétique du projectile sont ainsi réduites, de façon à limiter la dégradation des cibles ainsi que la zone de danger.
PCT/EP2001/008347 2000-08-09 2001-07-19 Projectile pour munition d'entrainement a trajectoire courte Ceased WO2002012820A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001272554A AU2001272554A1 (en) 2000-08-09 2001-07-19 Projectile for short trajectory training ammunition

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10038906 2000-08-09
DE10038906.6 2000-08-09
DE10103396A DE10103396A1 (de) 2000-08-09 2001-01-26 Geschoss für eine Ausbildungs-Kurzbahnmunition
DE10103396.6 2001-01-26

Publications (1)

Publication Number Publication Date
WO2002012820A1 true WO2002012820A1 (fr) 2002-02-14

Family

ID=26006645

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/008347 Ceased WO2002012820A1 (fr) 2000-08-09 2001-07-19 Projectile pour munition d'entrainement a trajectoire courte

Country Status (2)

Country Link
AU (1) AU2001272554A1 (fr)
WO (1) WO2002012820A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2442947C1 (ru) * 2010-10-11 2012-02-20 Открытое акционерное общество "Завод им. В.А. Дегтярева" Имитатор воздушных целей

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH149455A (de) * 1930-07-31 1931-09-15 Rheinische Metallw & Maschf Leuchtspurgeschoss.
DE1919954A1 (de) * 1967-06-27 1972-02-24 Erhard Lutz Huelsenlose Munition
DE1678197A1 (de) * 1968-01-02 1972-02-24 Dynamit Nobel Ag UEbungsmunition fuer verkuerzten Gefahrenbereich
WO1986006827A1 (fr) * 1985-05-16 1986-11-20 Action Manufacturing Company Projectile a rotation limitee dans le temps
US4655140A (en) * 1979-03-10 1987-04-07 Schirnecker Hans Ludwig Projectile, for example for hunting purposes, and process for its manufacture
EP0319877A2 (fr) * 1987-12-07 1989-06-14 DIEHL GMBH & CO. Projectile d'exercice sous-calibré, stabilisé par rotation
EP0880006A1 (fr) * 1997-05-23 1998-11-25 Societe Nationale Des Poudres Et Explosifs Projectiles composites non toxiques à matrice polymérique biodégradable pour cartouches de chasse ou de tir

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH149455A (de) * 1930-07-31 1931-09-15 Rheinische Metallw & Maschf Leuchtspurgeschoss.
DE1919954A1 (de) * 1967-06-27 1972-02-24 Erhard Lutz Huelsenlose Munition
DE1678197A1 (de) * 1968-01-02 1972-02-24 Dynamit Nobel Ag UEbungsmunition fuer verkuerzten Gefahrenbereich
US4655140A (en) * 1979-03-10 1987-04-07 Schirnecker Hans Ludwig Projectile, for example for hunting purposes, and process for its manufacture
WO1986006827A1 (fr) * 1985-05-16 1986-11-20 Action Manufacturing Company Projectile a rotation limitee dans le temps
EP0319877A2 (fr) * 1987-12-07 1989-06-14 DIEHL GMBH & CO. Projectile d'exercice sous-calibré, stabilisé par rotation
EP0880006A1 (fr) * 1997-05-23 1998-11-25 Societe Nationale Des Poudres Et Explosifs Projectiles composites non toxiques à matrice polymérique biodégradable pour cartouches de chasse ou de tir

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2442947C1 (ru) * 2010-10-11 2012-02-20 Открытое акционерное общество "Завод им. В.А. Дегтярева" Имитатор воздушных целей

Also Published As

Publication number Publication date
AU2001272554A1 (en) 2002-02-18

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