EP0036232A1 - Übungsgeschoss - Google Patents

Übungsgeschoss Download PDF

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Publication number
EP0036232A1
EP0036232A1 EP81200252A EP81200252A EP0036232A1 EP 0036232 A1 EP0036232 A1 EP 0036232A1 EP 81200252 A EP81200252 A EP 81200252A EP 81200252 A EP81200252 A EP 81200252A EP 0036232 A1 EP0036232 A1 EP 0036232A1
Authority
EP
European Patent Office
Prior art keywords
warhead
bullet
flight
ammunition
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.)
Granted
Application number
EP81200252A
Other languages
English (en)
French (fr)
Other versions
EP0036232B1 (de
Inventor
Joris De Brant
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.)
FN Herstal SA
Herstal SA
Original Assignee
FN Herstal SA
Herstal 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 FN Herstal SA, Herstal SA filed Critical FN Herstal SA
Priority to AT81200252T priority Critical patent/ATE4940T1/de
Publication of EP0036232A1 publication Critical patent/EP0036232A1/de
Application granted granted Critical
Publication of EP0036232B1 publication Critical patent/EP0036232B1/de
Expired 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
    • 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
    • F42B10/52—Nose cones

Definitions

  • the present invention relates to a training ammunition, particularly for weapons of war.
  • a .50 machine gun has a maximum range of around 7,000 m and a useful range of around 3,000 m.
  • a shooting range must have dimensions that comfortably take into account the maximum range, while the targets are only located at 500 or 600 meters. Huge spaces are thus lost, which is particularly annoying, especially in countries with high population density.
  • the object of the invention is to overcome these drawbacks by providing a training munition giving rise to a fair and precise shot up to a certain distance from the weapon (in principle to the place where the targets are located ) under the same shooting conditions and with the same flight time as war ammunition but having a very reduced range and maximum arrow.
  • the invention is based on the fact that following the oblique shock wave created by a projectile at supersonic speed, the pressure, the specific mass and the temperature of the air rise suddenly with the passage of the wave. It follows that the surface of the projectile warhead is subjected to high pressures and temperatures, this warhead absorbing heat during flight.
  • the principle of the invention is to use these factors to bring about a notable change in the shape of the projectile from a point on its trajectory corresponding to the useful range, so as to obtain a sudden deceleration and, consequently, a shortening. important of the total reach and the maximum deflection.
  • a driving ammunition according to the invention is therefore characterized in that at least part of the projectile warhead is made of a material eroding under the action of heat and pressures present on the surface of the warhead in flight so as to cause a modification of the shape of said warhead after a certain flight time, modification causing a notable increase in its aerodynamic coefficient, the remainder or body of the bullet being metallic.
  • Figure 1 shows a ball according to the invention, consisting of a body 1 having, in its front part, an annular flat face 2 and a central stud 3.
  • the body 1 receives a warhead 4 made in this example of high density polyethylene , having a softening temperature fixed by the useful range of the projectile, for example of the order of 120-130 ° C.
  • the warhead 4 is glued to the body 1 at the level of the face 2.
  • the plane of the front face 5 of the post 3 is situated clearly in front of the zone of greatest heating of the warhead in flight, except for the point.
  • the constituent material of the warhead 4 located between the planes 2 and 5 will have disappeared, while the tip of the warhead will have been partially and gradually eroded, which ensures the precision of the shoot.
  • the dimensions of the warhead in the plane of the face 5 are calculated so as to ensure the adhesion of said point or tenon 3 during the first flight time. Then, the material in contact with the face 5 erodes very quickly under the action of heat and pressure, which leads to the separation of the remainder of the point of the warhead of the post 3.
  • the front face 5 of the stud 3 is situated in a plane passing through a zone of lesser heating than those situated behind this plane when the projectile is in flight.
  • the dimensions of the ogival head in the plane of the face 5 are calculated so as to ensure that it adheres to the stud during the first phase of the flight, while allowing a slow and gradual change of the warhead, which ensures a fair and precise shot.
  • the choice of the constituent material of the warhead 4, its shape and that of the body 1 will be chosen in such a way that said sudden drop in speed is located at the end of the projectile's useful range or just beyond the latter. In this way, the ballistic characteristics of the above-described projectile will be, during the first phase of the flight (useful range), in all respects comparable to those of a real projectile.
  • the post 3 has the advantage of facilitating the centering and the maintenance of the warhead 4. It could however be omitted and replaced by a simple recess, as indicated in 6 in FIG.
  • an ammunition according to the invention exhibits, in the first phase of its flight, the same characteristics as an actual ammunition.
  • the increase in the aerodynamic resistance coefficient at the end of this first phase results solely from physical phenomena, the proper functioning of the ammunition is guaranteed.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Steroid Compounds (AREA)
  • Glass Compositions (AREA)
  • Lasers (AREA)
  • Liquid Crystal Substances (AREA)
  • Primary Cells (AREA)
  • Radar Systems Or Details Thereof (AREA)
EP81200252A 1980-03-18 1981-03-05 Übungsgeschoss Expired EP0036232B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81200252T ATE4940T1 (de) 1980-03-18 1981-03-05 Uebungsgeschoss.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE58460 1980-03-18
BE2/58460A BE882272A (fr) 1980-03-18 1980-03-18 Munition d'entrainement

Publications (2)

Publication Number Publication Date
EP0036232A1 true EP0036232A1 (de) 1981-09-23
EP0036232B1 EP0036232B1 (de) 1983-10-05

Family

ID=3865499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81200252A Expired EP0036232B1 (de) 1980-03-18 1981-03-05 Übungsgeschoss

Country Status (4)

Country Link
EP (1) EP0036232B1 (de)
AT (1) ATE4940T1 (de)
BE (1) BE882272A (de)
DE (1) DE3161078D1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547407A1 (fr) * 1983-06-08 1984-12-14 Mecanique Ste Nle Et Projectile d'exercice pour artillerie a freinage de trajectoire et marquage d'impact
EP0123978A3 (en) * 1983-04-23 1985-05-15 Rheinmetall Gmbh Nose cap for a projectile with an armour-piercing core
GB2154713A (en) * 1981-09-22 1985-09-11 Herstal Sa Improved ammunition
EP0346779A1 (de) * 1988-06-14 1989-12-20 DIEHL GMBH & CO. Übungsgeschoss
EP0385129A1 (de) * 1989-03-03 1990-09-05 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Kurzbahngeschoss mit Mitteln zum Verkürzen der Flugbahn des Geschosses
US9157713B1 (en) 2013-03-15 2015-10-13 Vista Outdoor Operations Llc Limited range rifle projectile
US9952024B2 (en) 2014-03-10 2018-04-24 Nostromo Holdings, Llc Ammunition cartridge with induced instability at a pre-set range

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2114879A5 (de) * 1970-12-08 1972-06-30 Oerlikon Buehrle Ag

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE734429C (de) * 1939-07-20 1943-04-15 Ing Bohdan Pantoflicek UEbungsgeschoss mit verkuerzter Flugbahn
US4140061A (en) * 1977-06-06 1979-02-20 The United States Of America As Represented By The Secretary Of The Army Short-range discarding-sabot training practice round and self-destruct subprojectile therefor
DE2756420C2 (de) * 1977-12-17 1985-02-07 Rheinmetall GmbH, 4000 Düsseldorf Geschoß mit selbsttätiger Zerlegerwirkung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2114879A5 (de) * 1970-12-08 1972-06-30 Oerlikon Buehrle Ag

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154713A (en) * 1981-09-22 1985-09-11 Herstal Sa Improved ammunition
EP0123978A3 (en) * 1983-04-23 1985-05-15 Rheinmetall Gmbh Nose cap for a projectile with an armour-piercing core
FR2547407A1 (fr) * 1983-06-08 1984-12-14 Mecanique Ste Nle Et Projectile d'exercice pour artillerie a freinage de trajectoire et marquage d'impact
EP0346779A1 (de) * 1988-06-14 1989-12-20 DIEHL GMBH & CO. Übungsgeschoss
EP0385129A1 (de) * 1989-03-03 1990-09-05 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Kurzbahngeschoss mit Mitteln zum Verkürzen der Flugbahn des Geschosses
US5001986A (en) * 1989-03-03 1991-03-26 Werkzeugmaschinenfabrik Oerlikon-Buhrle Ag Short-range projectile containing means for producing a short flight path
US9157713B1 (en) 2013-03-15 2015-10-13 Vista Outdoor Operations Llc Limited range rifle projectile
US9952024B2 (en) 2014-03-10 2018-04-24 Nostromo Holdings, Llc Ammunition cartridge with induced instability at a pre-set range

Also Published As

Publication number Publication date
ATE4940T1 (de) 1983-10-15
EP0036232B1 (de) 1983-10-05
DE3161078D1 (en) 1983-11-10
BE882272A (fr) 1980-09-18

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