EP1563247B1 - Mörsergeschoss mit erhöhter reichweite - Google Patents

Mörsergeschoss mit erhöhter reichweite Download PDF

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Publication number
EP1563247B1
EP1563247B1 EP02765127A EP02765127A EP1563247B1 EP 1563247 B1 EP1563247 B1 EP 1563247B1 EP 02765127 A EP02765127 A EP 02765127A EP 02765127 A EP02765127 A EP 02765127A EP 1563247 B1 EP1563247 B1 EP 1563247B1
Authority
EP
European Patent Office
Prior art keywords
projectile
fins
fin
stabiliser
slanted
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
EP02765127A
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English (en)
French (fr)
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EP1563247A1 (de
Inventor
Kresimir Lovro Marcelic
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1563247A1 publication Critical patent/EP1563247A1/de
Application granted granted Critical
Publication of EP1563247B1 publication Critical patent/EP1563247B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F42B10/02—Stabilising arrangements
    • F42B10/04—Stabilising arrangements using fixed fins
    • F42B10/06—Tail fins

Definitions

  • the invention is mortar projectile furnished with slanted and bent stabiliser wings that enable the projectile to rotate around its longitudinal axis, this enhancing its stability and precision as well as range and efficiency at the target.
  • F 42 B 10/00 Weapons - Ammunition and Blasting - 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.
  • the technical problem that is solved by this invention relates to mortar projectiles with stabilisers, where fins' diameter is fixed and equal to the mortar barrel bore (calibre fins), but where fins are designed and fitted on the stabiliser, related to the projectile axis, to enable rotation of the axis during flight, this enhancing the projectile stability, precision and range.
  • stabilisers are based on classic solutions of flat fins. Such solutions are satisfactory with projectiles of low range and precision demands. Such projectiles are affected by weather.
  • Stabilisers with calibre fins has its outer diameter fixed and equal to the mortar barrel bore.
  • Stabilisers with have fins that unfold when the projectile leaves the barrel, after which the projectile has outer diameter larger than the mortar barrel bore.
  • the patent document GB 508 201 A shows a projectile where both fin sides are by their entire lengths parallel to each other and straight, and placed at an angle to the stabiliser body.
  • US 2 694 364 shows a mortar projectile according to the preamble of claim 1.
  • the essence of the invention is mortar projectile, to be fired from smooth bore mortars, furnished with fins of fixed outer diameter that is equal to the barrel bore (calibre fins). In their front part, the fins are flat, whereas in the rare part they are bent. All fins are fitted to the stabiliser slanted relative to the projectile axis by an angle larger than zero. This enables the projectile to rotate in the flight, which results in the projectile enhanced stability, precision and range.
  • All fins are of similar shape, area and dimensions. Related to the projectile calibre, they are made to produce minimum resistance in the flight. The fin bases and peaks are designed to approach the shape of a water drop.
  • the increased-range mortar projectile comprises point-detonating fuse with safety pin; shell with the basic charge and ring for lessening the powder gas losses; stabiliser with slanted and bent fins; additional charge with additional charge carrier; and propelling charge with detonating cap.
  • Figures 1, 2 and 3 show that the increased-range mortar projectile, to be fired from smooth bore barrel, consists of the following assemblies:
  • the increased-range mortar projectile to be fired from smooth bore barrels, and rotating around its longitudinal axis during the flight, may have stabilisers of various numbers of slanted and bent fins.
  • Figs. 1 and 2 show the increased-range mortar projectile furnished with the stabiliser C with eight regularly distributed fins. At projectiles with eight fins 9, fins are fitted on the stabiliser body 6 symmetrically relevant to the projectile axis, turned by 45° one from another, Fig. 4 .
  • All fins are identical by shape, area and dimensions and, as related to the projectile calibre, they are designed to produce minimum resistance during the projectile flight.
  • Figs. 5 and 6 show cross-section of the base of a fin 9
  • Fig. 7 show the top of a fin
  • Fig. 8 top view of a fin.
  • the side 10 of the fin 9 is straight
  • the side 11 is designed as a curve of two lines: line 12 and line 13, crossing each other in the centre of gravity of the cross-section 14, so that the line 13 is slanted relative to the line 12 by the angle ⁇ , which is larger then zero, in the positive direction.
  • Crossing of the lines 12 and 13 in the fin centre of gravity 14 is rounded from the fin base to the top in order to reduce resistance during the projectile flight.
  • the line 12 is parallel to the edge 10.
  • the front part of the edge 11 follows the line 12.
  • the rear crossing of the side 10 and the bent part of the side 11 is constructed of the minimum, technologically required, thickness - ideal would be the shape of a dull knife 15.
  • the front part of the fin 16, from base to top, is designed like a half of ellipse.
  • Fin base cross-section, Fig. 6 , and top cross-sections, Fig. 7 are designed so that their aerodynamic shape approaches the shape of a water drop, Fig. 8 .
  • fins 9 change their thickness from the centre towards the ends, by technological angles designed to make its extracting from the tool easier.
  • Fins 9, viewed from a side, Fig. 3 are designed to enable extraction from the tool and to achieve the most favourable aerodynamic shape.
  • Each fin 9 is fitted on the stabiliser body 6 slanted by its front edge by the angle ⁇ , which is larger than zero, relative to the projectile axis. Therefore, air flow over the fins during the flight creates on the slanted fin surface a force that makes the projectile to rotate around its longitudinal axis.
  • the described fin geometric shape and projectile rotation during the flight increase the projectile stability which, again, results in the projectile increased range with lesser scattering of hits and larger shooting precision.
  • Centre of gravity of the projectile is determined by distribution of masses within the projectile.
  • the increased-range mortar projectile to be fired from smooth bore barrels, with stabiliser that enables rotation of the projectile during the flight, embodied in the above described way, results in enhanced projectile stability and range, larger precision and lesser scattering of hits, which has a positive effect to the projectile technology and cost.

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  • 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)
  • Stereo-Broadcasting Methods (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (3)

  1. Das Granatenwerferprojektil mit verlängerter Reichweite, das aus dem Werferrohr abgeschleudert wird, dessen Innenfläche glatt ist, das aus den folgenden Elementen besteht: Element (A): Projektilkopf der den Zünder (1) mit Sicherung umfasst; Element (B): Projektilkörper, der den Mantel umfasst (3), mit grundlegender explosiven Ladung (4) und das Ring (5); Element (C): Stabilisator, der den Stabilisatorkörper umfasst (6), an dessen Außenmantel sich die symmetrisch angeordneten Flügelchen befinden (9), die die Rotation des Projektils während des Flugs ermöglichen; Element (D): Basisaufladung, die Ladung (17) mit Zündkapsel (18) umfasst; Element (E): Zusatzaufladung, die Kammerstücken (19) mit Pulverladung (20) und Halter (21) umfasst, gekennzeichnet dadurch, dass die Flügelchen (9) eine gerade Seite (10) und eine gekrümmte Seite (11) haben; dass die gekrümmte Seite (11) im Vorderteil, bis zum Schwerpunkt (14) der Flügelchen, mit der geraden Seite (10) parallel ist, dass die gekrümmte Seite (11), vom Schwerpunkt (14) der Flügelchen bis zum Ende (15) der Flügelchen, ausgeführt ist als die Kurve, die definiert ist durch die Gerade (12), die parallel ist mit der geraden Seite (10) und der Gerade (13), die die Gerade (12) im Schwerpunkt (14) des Querschnitts der Flügelchen (9) in der Wurzel schneidet, so dass die Gerade (13), im Bezug auf die Gerade (12), gekrümmt ist um den Winkel β der größer als Null in positiver Richtung ist; dass die Verbindung der Geraden (12 i 13), im Schwerpunkt (14) des Querschnitts der Flügelchen (9) in der Wurzel, leicht abgerundet von der Wurzel bis zum Ende der Flügelchen ist, dass die Flügelchen (9) am Stabilisatorkörper (6) so angeordnet sind, dass sie in Bezug auf die Minenachse gedreht sind um den Winkel α , der größer als Null ist.
  2. Das Granatenwerferprojektil mit verlängerter Reichweite, gemäß dem Antrag 1, gekennzeichnet dadurch, dass die angeführten Flügelchen (9) den Vorderteil der Wurzel und die Spitze der Flügelchen in Form von einer Hälfte der Ellipse ausgeführt sind, dass die Verbindung der geraden Seite (10) und des gekrümmten Teils der gekrümmten Seite (11) am Ende (15) der Flügelchen, in Form von stumpfem Messer ausgeführt sind.
  3. Das Granatenwerferprojektil mit verlängerter Reichweite, gemäß der Anträgen 1 und 2, gekennzeichnet dadurch, dass die oben angeführten Flügelchen (9) solche Form und Oberfläche habe, wenn man die Querschnitte der Wurzel und der Spitzen der Flügelchen betrachtet, dass ihre aerodynamische Form einen minimalen Widerstand beim Projektilflug darstellt.
EP02765127A 2002-08-06 2002-08-06 Mörsergeschoss mit erhöhter reichweite Expired - Lifetime EP1563247B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/HR2002/000036 WO2003029747A1 (en) 2002-08-06 2002-08-06 Increased-range mortar projectile

Publications (2)

Publication Number Publication Date
EP1563247A1 EP1563247A1 (de) 2005-08-17
EP1563247B1 true EP1563247B1 (de) 2008-04-02

Family

ID=10947027

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02765127A Expired - Lifetime EP1563247B1 (de) 2002-08-06 2002-08-06 Mörsergeschoss mit erhöhter reichweite

Country Status (4)

Country Link
EP (1) EP1563247B1 (de)
AT (1) ATE391280T1 (de)
DE (1) DE60225949D1 (de)
WO (1) WO2003029747A1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE425483A (de) * 1937-01-04
US2494026A (en) * 1945-03-28 1950-01-10 Anderson Nelson Projectile
US2694364A (en) * 1949-01-18 1954-11-16 Lyle K Liljegren Streamlined mortar shell
US3650213A (en) * 1969-06-19 1972-03-21 Aai Corp Frangible filled-projectile ammunition

Also Published As

Publication number Publication date
WO2003029747A1 (en) 2003-04-10
WO2003029747A8 (en) 2004-07-08
EP1563247A1 (de) 2005-08-17
DE60225949D1 (de) 2008-05-15
ATE391280T1 (de) 2008-04-15

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