EP0437675B1 - Rayures pour le tube d'une arme à feu - Google Patents

Rayures pour le tube d'une arme à feu Download PDF

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Publication number
EP0437675B1
EP0437675B1 EP90118945A EP90118945A EP0437675B1 EP 0437675 B1 EP0437675 B1 EP 0437675B1 EP 90118945 A EP90118945 A EP 90118945A EP 90118945 A EP90118945 A EP 90118945A EP 0437675 B1 EP0437675 B1 EP 0437675B1
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EP
European Patent Office
Prior art keywords
barrel
projectile
twist
angle
force
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.)
Expired - Lifetime
Application number
EP90118945A
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German (de)
English (en)
Other versions
EP0437675A2 (fr
EP0437675A3 (en
Inventor
Herbert Dr. Krumm
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.)
Rheinmetall Industrie AG
Original Assignee
Rheinmetall Industrie AG
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 Rheinmetall Industrie AG filed Critical Rheinmetall Industrie AG
Publication of EP0437675A2 publication Critical patent/EP0437675A2/fr
Publication of EP0437675A3 publication Critical patent/EP0437675A3/de
Application granted granted Critical
Publication of EP0437675B1 publication Critical patent/EP0437675B1/fr
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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
    • F41A21/16—Barrels or gun tubes characterised by the shape of the bore
    • F41A21/18—Grooves-Rifling

Definitions

  • the invention relates to a weapon barrel with the features of the preamble of patent claim 1.
  • the sinusoidal swirl course still shows a pronounced maximum Last strength, but also a significantly reduced last strength at the mouth.
  • the invention is therefore based on the object of avoiding the above-described disadvantages of the types of swirl used in known weapon barrels and of specifying a helix angle profile ⁇ (x) which leads as precisely as possible to a predetermined trapezoidal groin force profile in the weapon barrel when the respective projectile is fired.
  • the following preferably applies to the factor f 1.0 ⁇ f ⁇ 1.2.
  • the diagram of the groin force curve ⁇ (x) of a weapon barrel according to the invention shown in FIG. 1 is based not only on the values already mentioned, but also on the following coefficients, which were determined with the aid of a numerical optimization method known per se:
  • FIG. 3 shows the swirl angle curve ⁇ (x) according to the invention, which is shown here as a solid line as in FIG. 1, in comparison with the types of swirl previously used for a corresponding weapon barrel.
  • the constant swirl is shown as a dash-dotted curve and the parabolic swirl as a dashed curve.
  • a weapon barrel constructed according to the invention would only be able to reduce the maximum groin force by approximately 11%, but the parabolic twist would become the leading band Deform the projectile during the projectile run from x A to x E due to ⁇ ⁇ 9 ° and possibly let it fail.
  • the groin force R (x E ) at the muzzle takes on its maximum value, so that there is a torque shock on the projecting floor and u. U. to a fault in the floor outlet.
  • the muzzle side force R (x E ) of the weapon barrel according to the invention - as shown in FIG. 4 - is only 10% of the maximum value.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (2)

  1. Tube d'arme à feu à rayures avec un angle d'inclinaison variable (α(x)) et une force de mise en rotation (R(x)) agissant lors du tir d'un projectile, le tube étant réalisé de telle sorte que la force de mise en rotation (R(x)), le long du parcours (x) du projectile dans le tube, croît de façon rapide au début des rayures ( x=x A
    Figure imgb0028
     ) pour une masse (mG) et une vitesse (VG(x)) du projectile ainsi qu'une courbe de variation de la pression des gaz (p(x)) prédéterminée, puis, dans une zone suivante du tube, reste sensiblement constante et décroît de façon rapide vers la bouche ( x=x E
    Figure imgb0029
     ) et le maximum de la force de mise en rotation (R(x)) étant réduit d'au moins 1/4 par rapport à celui existant dans un tube à rayures à pas constant usuel, caractérisé en ce que l'angle d'inclinaison de rayure (α(x)) déterminant la force de mise en rotation (R(x)) est défini par une série de Fourier paire suivant la formule

    α(x) = Σ C n cos (nxπf/x E ) ; 0 ≦ n ≦ 10
    Figure imgb0030

    avec 1,0 < f < 1,2 C₁ = -1,82927 C₆ = 0,02020 C₂ = 0,22474 C₇ = 0 C₃ = 0 C₈ = 0,00117 C₄ = 0,10200 C₉ = 0 C₅ = 0,01480 C₁₀ = 0,00001
  2. Tube d'arme à feu selon la revendication 1, caratérisé en ce que pour économiser une bande de guidage du projectile, une variation (Δx) de l'angle d'inclinaison des rayures (α(x)), d'un angle de départ ( α A = α(x A )
    Figure imgb0031
     au début de la rayure jusqu'à un angle final ( α E = α(x E )
    Figure imgb0032
     ) à la bouche, est inférieure à 5,5°, de sorte que

    Δx = α E - α A < 5,5°
    Figure imgb0033
EP90118945A 1990-01-17 1990-10-04 Rayures pour le tube d'une arme à feu Expired - Lifetime EP0437675B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4001130 1990-01-17
DE4001130A DE4001130A1 (de) 1990-01-17 1990-01-17 Waffenrohr mit optimiertem drallverlauf

Publications (3)

Publication Number Publication Date
EP0437675A2 EP0437675A2 (fr) 1991-07-24
EP0437675A3 EP0437675A3 (en) 1992-05-06
EP0437675B1 true EP0437675B1 (fr) 1995-01-11

Family

ID=6398201

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90118945A Expired - Lifetime EP0437675B1 (fr) 1990-01-17 1990-10-04 Rayures pour le tube d'une arme à feu

Country Status (3)

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US (1) US5077926A (fr)
EP (1) EP0437675B1 (fr)
DE (2) DE4001130A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4200171C2 (de) * 1992-01-07 2001-07-26 Rheinmetall W & M Gmbh Waffenrohr
US5661255A (en) * 1995-11-07 1997-08-26 Briley Manufacturing Co. Weapons barrel stabilizer
US5765303A (en) * 1996-09-30 1998-06-16 Rudkin, Jr.; Henry A. Barrels for firearms and methods for manufacturing the same
DE19729294A1 (de) 1997-07-09 1999-01-14 Rheinmetall W & M Gmbh Waffenrohr
DE19837534C2 (de) * 1998-08-19 2001-07-26 Rheinmetall W & M Gmbh Verfahren zur Herstellung einer großkalibrigen Rohrwaffe
US20070258783A1 (en) * 2006-05-02 2007-11-08 Bartlein Tracy M Method and apparatus for rifling a firearm barrel
US7802393B2 (en) * 2007-07-02 2010-09-28 Sjs Paintball, Lp Soft-projectile gun barrel and method for making same
KR20120088306A (ko) * 2011-01-31 2012-08-08 국방과학연구소 강선각 산출 방법
US9212860B2 (en) 2013-02-28 2015-12-15 Daniel Kunau Firearm rifling
US10883785B1 (en) 2019-09-13 2021-01-05 U.S. Government As Represented By The Secretary Of The Army Gun barrel equipped with alternating variable pitch rifling

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB127849A (en) * 1917-05-29 1919-06-19 Charles Wilfrid Harrison An Improvement in the Rifling of Cannon, Howitzers and other Weapons.
US3496667A (en) * 1968-01-04 1970-02-24 Olin Mathieson Choked shotgun with rifled barrel
US3616562A (en) * 1968-03-21 1971-11-02 Burgsmueller Karl Gun-barrel rifling
US3525172A (en) * 1968-07-05 1970-08-25 A I M Magnum Corp Rifled bore construction for a gun barrel
CH502573A (de) * 1969-07-12 1971-01-31 Messerschmitt Boelkow Blohm Abschussvorrichtung mit Drallzügen, insbesondere für selbst getriebene Geschosse
US4176487A (en) * 1970-11-18 1979-12-04 Manis John R Firearm barrels and projectiles
DE3409073A1 (de) * 1984-03-13 1985-09-26 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf Waffenrohr mit zug-feld-profil

Also Published As

Publication number Publication date
DE4001130A1 (de) 1991-07-18
EP0437675A2 (fr) 1991-07-24
DE59008253D1 (de) 1995-02-23
EP0437675A3 (en) 1992-05-06
US5077926A (en) 1992-01-07

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