EP0036231A1 - Übungsgeschoss - Google Patents

Übungsgeschoss Download PDF

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Publication number
EP0036231A1
EP0036231A1 EP81200251A EP81200251A EP0036231A1 EP 0036231 A1 EP0036231 A1 EP 0036231A1 EP 81200251 A EP81200251 A EP 81200251A EP 81200251 A EP81200251 A EP 81200251A EP 0036231 A1 EP0036231 A1 EP 0036231A1
Authority
EP
European Patent Office
Prior art keywords
warhead
projectile
memory material
shape memory
ammunition
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Withdrawn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
EP81200251A
Other languages
English (en)
French (fr)
Inventor
Maurice Victor Henri Bourlet
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
Publication of EP0036231A1 publication Critical patent/EP0036231A1/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Withdrawn legal-status Critical Current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
    • 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.
  • 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 when the wave passes. It follows that the surface of the projectile warhead is subjected to high temperatures, this warhead absorbing heat during flight.
  • the principle of the invention is to use these factors to bring about a modification of 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 significant shortening. of the full range.
  • a drive munition according to the invention is characterized in that at least part of the projectile warhead, of conventional shape, is made of a shape memory material which, under the effect of the heat present at the surface of the warhead in flight returns to a primitive state resulting in an increase in the aerodynamic resistance of the projectile.
  • FIG. 1 represents a warhead 1 constituted by two identical shells 2 and 3 firmly assembled by a circlip 4 or the like.
  • the latter is made of a shape memory material, chosen and treated so as to resume a linear shape as soon as it reaches a given temperature (fixed by the useful range of the projectile), for example 120 130 ° C.
  • the warhead 1 is full and is coated with a serrated collar 5, also made of a shape memory material and intended to open in corolla once at the above temperature.
  • 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)
EP81200251A 1980-03-18 1981-03-05 Übungsgeschoss Withdrawn EP0036231A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2/58461A BE882273A (fr) 1980-03-18 1980-03-18 Munition d'entrainement
BE58461 1980-03-18

Publications (1)

Publication Number Publication Date
EP0036231A1 true EP0036231A1 (de) 1981-09-23

Family

ID=3865500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81200251A Withdrawn EP0036231A1 (de) 1980-03-18 1981-03-05 Übungsgeschoss

Country Status (2)

Country Link
EP (1) EP0036231A1 (de)
BE (1) BE882273A (de)

Cited By (4)

* 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
EP0169171A1 (de) * 1984-07-17 1986-01-22 Schweizerische Eidgenossenschaft vertreten durch die Eidg. Munitionsfabrik Thun der Gruppe für Rüstungsdienste Geschoss für eine Übungsmunition mit einer Schussfeldbegrenzung sowie Verwendung des Geschosses
EP0314875A3 (de) * 1987-11-03 1990-02-28 Rheinmetall GmbH Übungsgeschoss mit verkürzter Reichweite
US9157713B1 (en) 2013-03-15 2015-10-13 Vista Outdoor Operations Llc Limited range rifle projectile

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739374A1 (de) * 1977-09-01 1979-03-15 Dynamit Nobel Ag Uebungsflugkoerper mit bremseinrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739374A1 (de) * 1977-09-01 1979-03-15 Dynamit Nobel Ag Uebungsflugkoerper mit bremseinrichtung

Cited By (4)

* 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
EP0169171A1 (de) * 1984-07-17 1986-01-22 Schweizerische Eidgenossenschaft vertreten durch die Eidg. Munitionsfabrik Thun der Gruppe für Rüstungsdienste Geschoss für eine Übungsmunition mit einer Schussfeldbegrenzung sowie Verwendung des Geschosses
EP0314875A3 (de) * 1987-11-03 1990-02-28 Rheinmetall GmbH Übungsgeschoss mit verkürzter Reichweite
US9157713B1 (en) 2013-03-15 2015-10-13 Vista Outdoor Operations Llc Limited range rifle projectile

Also Published As

Publication number Publication date
BE882273A (fr) 1980-09-18

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT NL SE

ITCL It: translation for ep claims filed

Representative=s name: DR. ING. A. RACHELI & C.

TCAT At: translation of patent claims filed
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19820818

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BOURLET, MAURICE VICTOR HENRI