EP1584883B1 - Waffe mit Gegengewicht und Vorrichtung zur Dichtung des Gegengewichtes - Google Patents

Waffe mit Gegengewicht und Vorrichtung zur Dichtung des Gegengewichtes Download PDF

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Publication number
EP1584883B1
EP1584883B1 EP04445042A EP04445042A EP1584883B1 EP 1584883 B1 EP1584883 B1 EP 1584883B1 EP 04445042 A EP04445042 A EP 04445042A EP 04445042 A EP04445042 A EP 04445042A EP 1584883 B1 EP1584883 B1 EP 1584883B1
Authority
EP
European Patent Office
Prior art keywords
annular element
sealing means
countermass
folding plate
folding
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
EP04445042A
Other languages
English (en)
French (fr)
Other versions
EP1584883A1 (de
Inventor
Rolf Pettersson
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.)
Saab AB
Original Assignee
Saab AB
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 Saab AB filed Critical Saab AB
Priority to EP04445042A priority Critical patent/EP1584883B1/de
Priority to ES04445042T priority patent/ES2275199T3/es
Priority to AT04445042T priority patent/ATE344913T1/de
Priority to DE602004003126T priority patent/DE602004003126T2/de
Publication of EP1584883A1 publication Critical patent/EP1584883A1/de
Application granted granted Critical
Publication of EP1584883B1 publication Critical patent/EP1584883B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F41A1/00—Missile propulsion characterised by the use of explosive or combustible propellant charges
    • F41A1/08—Recoilless guns, i.e. guns having propulsion means producing no recoil
    • F41A1/10—Recoilless guns, i.e. guns having propulsion means producing no recoil a counter projectile being used to balance recoil

Definitions

  • the present invention relates to a weapon of countermass type comprising a barrel with an ammunition part, such as a projectile or a shell, countermass for reducing the pressure around the weapon, and a charge space with a charge, which charge space is arranged between the ammunition part and the countermass, the countermass being enclosed in the barrel of the weapon between openable sealing means.
  • the invention also relates to an openable sealing means for sealing countermass in the barrel of a weapon.
  • the opening which is formed into the space with the countermass under the action of the gas pressure emanating from the charging space is smaller than the diameter of the barrel and thus has a throttling effect on the gas flow.
  • the opening area tends to vary under different circumstances and inter alia depends on the gas pressure which is generated and in turn inter alia depends on the temperature of the weapon or of the countermass container, which can vary between -40° and +60°.
  • a critical stage in weapons with countermass is the opening phase of the countermass container.
  • the object of the present invention is to produce a weapon of countermass type and an openable sealing means which ensure that the same opening area is formed irrespective of gas pressure generated. In this way, the opening operation of the sealing means has as little spread as possible, and optimum possibilities for small recoil spreads are created.
  • the object of the invention is achieved by a weapon characterized in that at least one of the openable sealing means consists of an annular element with a folding support designed with a first oblong element attached to at least two diametrally opposite contact surfaces on the inner periphery of the annular element and essentially extending through the centre of rotation of the annular element, and a folding plate covering one opening of the annular element and sealing tightly against the annular element, and also an openable sealing means characterized in that it comprises an annular element with a folding support designed with a first oblong element attached to at least two diametrally opposite contact surfaces on the inner periphery of the annular element and essentially extending through the centre of rotation of the annular element, and a folding plate covering one opening of the annular element and sealing tightly against the annular element.
  • a weapon is obtained with an opening area to the countermass with an area which is essentially the same as the cross-sectional area of the barrel, which opening area is independent of gas pressure generated.
  • fragments are effectively prevented from coming away from the sealing means and reaching the rear outlet of the barrel with the risk of injury.
  • the reason for this is that when the folding plate comes away from the inner periphery of the annular element, it is caught by the folding support and thus prevented from reaching the rear outlet of the barrel.
  • the sealing means which is arranged on the charge space side of the countermass consists of an annular element with a folding support and a folding plate according to the previous paragraph.
  • the folding plate is provided with weakenings adjacent to the inner periphery of the annular element.
  • the weakenings adjacent to the inner periphery of the annular element can advantageously consist of a groove etched in the folding plate. The utilization of etching technology makes groove formation relatively uncomplicated at the same time as satisfactory accuracy in groove forming is achieved.
  • the folding plate is arranged sunk into the annular element.
  • the embodiment contributes favourably to sealing against the annular element.
  • the inner periphery of the annular element is designed with a sharp edge towards the folding plate. By means of the sharp edge, separation of the folding plate from the annular element is facilitated.
  • the first oblong element of the folding support is provided with a rounded edge towards the folding plate.
  • the rounded edge ensures that the folding plate remains held together during the folding operation around the first oblong element while avoiding cutting effects.
  • the folding support comprises a second oblong element arranged essentially diametrally in the annular element and essentially at right angles to the first oblong element, which second element is designed with a sharp edge towards the folding plate.
  • the second oblong element functions as a cutting element which cuts the folding plate into two parts which in turn fold around the first oblong element on their respective side of the second oblong element.
  • the embodiment effectively prevents fragments from reaching the rear outlet of the barrel at the same time as an opening to the countermass is formed which corresponds closely to the cross-sectional area of the barrel.
  • the folding plate can be attached to the first oblong element of the folding support at one or more attachment points, preferably in the form of spot welds.
  • the weapon 1 of countermass type shown in Figure 1 comprises a diagrammatically shown barrel 2 containing an ammunition part 3 in the form of a projectile 4, a charge space 5 with a charge 6, and a countermass 7.
  • the countermass 7 is enclosed between a front and a rear openable sealing means 8 and, respectively, 9.
  • a sealing means which is especially suitable as a front sealing means will be described in greater detail below with reference to Figures 2-6.
  • a number of suitable materials are available as countermass, and solutions of salt may be mentioned as examples of suitable materials.
  • the sealing means 8 comprises an annular element 10 with a folding support 11 and a folding plate 12.
  • the folding support consists of a plane plate which is fastened diametrally in the annular element by means of, for example, welding.
  • the folding support is provided with a rounded edge 13 along that part of the folding support which faces the entrance opening of the sealing means 8 and thus the folding plate 12, see Figure 4.
  • the folding plate 12 is sunk into the annular element 10 by virtue of the fact that the internal diameter of the entrance side is slightly greater than that of the exit side.
  • an edge surface 14 is formed, against which the folding plate rests and to which it is attached by means of, for example, a welded joint.
  • the transition between the edge surface 14 and that part of the annular element which has a slightly smaller internal diameter is designed as a sharp edge 15.
  • the folding plate can be attached to the folding support, for example by a pair of spot welds 17, 18, see Figure 2.
  • the edge surface 14 and adjacent parts of the annular element 10 and the folding plate 12 are also shown on enlarged scale in Figure 4. It can also be seen from Figure 4 that a groove 24 intended to accommodate a sealing ring, such as an O ring, can be arranged around the outer periphery of the annular element 10.
  • Figure 3 shows the design of the folding plate 12 on the side which faces the folding support.
  • the folding plate comprises an all-round groove 16 designed close to the periphery of the folding plate.
  • the groove may have been produced by etching for example. The function of the groove is described in greater detail below.
  • Suitable materials for the annular element 10 and the folding support 11 may be steel or aluminium. It is proposed that the folding plate 12 be made of aluminium, stainless steel, titanium or nickel silver.
  • a gas pressure is delivered to the sealing means 8 from the charge space.
  • the gas pressure reaches the pressure level at which the sealing means 8 is dimensioned to open, the folding plate is freed from the annular element by virtue of the connection breaking along the groove 16.
  • the folding plate is caught and folded around the folding support 11 and takes up a position according to Figure 5.
  • an opening into the countermass is brought about which introduces a very small restriction of the cross-sectional area of the barrel.
  • the countermass 7 is now pressurized. The pressure is conveyed via the countermass 7 towards the rear sealing means 9 which opens when a predetermined bursting pressure is reached, and the countermass 7 is pushed out through the outlet 19 of the barrel 2.
  • the folding support 11 has been modified.
  • the folding support consists of a first oblong element 20 with a rounded edge 21 and a second oblong element 22 with a sharp edge 23 arranged at right angles to the first oblong element 21.
  • the folding plate 12 will be freed from the annular element along the groove 16 and folded around the rounded edge 21 of the oblong element 20 at the same time as the sharp edge 23 on the oblong element 22 cuts the folding plate into two halves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
  • Telescopes (AREA)
  • Closures For Containers (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Component Parts Of Construction Machinery (AREA)

Claims (13)

  1. Waffe (1) vom Gegenmassentyp, mit einem Lauf (2) mit einem Munitionsteil (3), wie z.B. ein Projektil (4) oder eine Granate, einer Gegenmasse (7) zum Reduzieren des Drucks hinter der Waffe, und einem Ladungsraum (5) mit einer Ladung (6), wobei der Ladungsraum (5) zwischen dem Munitionsteil (3) und der Gegenmasse (7) angeordnet ist, wobei die Gegenmasse (7) in dem Lauf (2) der Waffe (1) zwischen aufreißbare Abdichtungen (8, 9) angeordnet ist, dadurch gekennzeichnet, dass mindestens eine der aufreißbaren Abdichtungen (8) besteht aus einem ringförmigen Element (10) mit einer Faltabstützung (11), die mit einem ersten langgestreckten Element (20) ausgestattet ist, das an mindestens zwei diametral gegenüberliegenden Kontaktflächen an dem inneren Umfang des ringförmigen Elements (10) befestigt ist und im wesentlichen durch das Rotationszentrum des ringförmigen Elements (10) verläuft, und einer Faltplatte (12), die eine Öffnung des ringförmigen Elements (10) abdeckt und gegen das ringförmige Element (10) abdichtet.
  2. Waffe nach Anspruch 1, dadurch gekennzeichnet, dass mindestens die Abdichtung (8), die an der Ladungsraumseite der Gegenmasse (7) angeordnet ist, aus einem ringförmigen Element (10) mit einer Faltabstützung (11) und einer Faltplatte (12) gemäß Anspruch 1 besteht.
  3. Aufreißbare Abdichtung (8) zum Abdichten einer Gegenmasse (7) in dem Lauf (2) einer Waffe (1), dadurch gekennzeichnet, dass sie ein ringförmiges Element (10) mit einer Faltabstützung (11), die mit einem ersten langgestreckten Element (20) ausgestaltet ist, das an mindestens zwei diametral gegenüberliegenden Kontaktflächen an dem Innenumfang des ringförmigen Elements (10) befestigt ist und im wesentlichen durch das Rotationszentrum des ringförmigen Elements (10) verläuft, und eine Faltplatte (12) aufweist, die eine Öffnung des ringförmigen Elements (10) abdeckt und dicht gegen das ringförmige Element (10) abdichtet.
  4. Aufreißbare Abdichtung (8) gemäß Anspruch 3, dadurch gekennzeichnet, dass die Faltplatte (12) mit Schwächungen nahe dem Innenumfang des ringförmigen Elements (10) versehen ist.
  5. Aufreißbare Abdichtung gemäß Anspruch 4, dadurch gekennzeichnet, dass die Schwächungen aus Nuten bestehen, die in die Faltplatte (12) geätzt sind.
  6. Aufreißbare Abdichtung gemäß einem der vorangehenden Ansprüche 3 bis 5, dadurch gekennzeichnet, dass die Faltplatte (12) in dem ringförmigen Element (10) versenkt angeordnet ist.
  7. Aufreißbare Abdichtung gemäß einem der vorangehenden Ansprüche 3 bis 6, dadurch gekennzeichnet, dass der Innenumfang des ringförmigen Elements (10) mit einer scharfen Kante (15) zu der Faltplatte (12) hin ausgestaltet ist.
  8. Aufreißbare Abdichtung gemäß einem der vorangehenden Ansprüche 3 bis 7, dadurch gekennzeichnet, dass das erste langgestreckte Element (20) der Faltabstützung (11) zu der Faltplatte (12) hin mit einer gerundeten Kante (13, 21) versehen ist.
  9. Aufreißbare Abdichtung gemäß einem der vorangehenden Ansprüche 3 bis 8, dadurch gekennzeichnet, dass die Faltabstützung (11) ein zweites langgestrecktes Element (22) aufweist, das im Wesentlichen diametral in dem ringförmigen Element (10) und im Wesentlichen rechtwinkelig zu dem ersten langgestreckten Element (21) angeordnet ist, wobei das zweite langgestreckte Element (22) zu der Faltplatte (12) hin mit einer scharfen Kante (23) ausgebildet ist.
  10. Aufreißbare Abdichtung gemäß einem der vorangehenden Ansprüche 3 bis 9, dadurch gekennzeichnet, dass die Faltplatte (12) an dem ersten langgestreckten Element (20) der Faltabstützung (11) an einem oder mehreren Befestigungspunkten, vorzugsweise in Form von Schweißpunkten, befestigt ist.
  11. Aufreißbare Abdichtung gemäß einem der vorangehenden Ansprüche 3 bis 10, dadurch gekennzeichnet, dass das ringförmige Element (10) eine umlaufende Nut (16) im Außenumfang des ringförmigen Elements (10) mit Dichtmitteln, vorzugsweise in Form eines O-Rings, aufweist.
  12. Aufreißbare Abdichtung gemäß einem der vorangehenden Ansprüche 3 bis 11, dadurch gekennzeichnet, dass das ringförmige Element (10) und die Faltabstützung (11) aus Metall, wie z.B. Stahl oder Aluminium, bestehen.
  13. Aufreißbare Abdichtung gemäß einem der vorangehenden Ansprüche 3 bis 12, dadurch gekennzeichnet, dass die Faltplatte (12) aus Aluminium, Titan, Edelstahl oder Nickelsilber besteht.
EP04445042A 2004-04-05 2004-04-05 Waffe mit Gegengewicht und Vorrichtung zur Dichtung des Gegengewichtes Expired - Lifetime EP1584883B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP04445042A EP1584883B1 (de) 2004-04-05 2004-04-05 Waffe mit Gegengewicht und Vorrichtung zur Dichtung des Gegengewichtes
ES04445042T ES2275199T3 (es) 2004-04-05 2004-04-05 Arma de tipo contrapeso y medios para el cierre estanco del contrapeso.
AT04445042T ATE344913T1 (de) 2004-04-05 2004-04-05 Waffe mit gegengewicht und vorrichtung zur dichtung des gegengewichtes
DE602004003126T DE602004003126T2 (de) 2004-04-05 2004-04-05 Waffe vom Gegengewichtstyp und Vorrichtung zur Abdichtung der Gegenmasse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04445042A EP1584883B1 (de) 2004-04-05 2004-04-05 Waffe mit Gegengewicht und Vorrichtung zur Dichtung des Gegengewichtes

Publications (2)

Publication Number Publication Date
EP1584883A1 EP1584883A1 (de) 2005-10-12
EP1584883B1 true EP1584883B1 (de) 2006-11-08

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ID=34896196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04445042A Expired - Lifetime EP1584883B1 (de) 2004-04-05 2004-04-05 Waffe mit Gegengewicht und Vorrichtung zur Dichtung des Gegengewichtes

Country Status (4)

Country Link
EP (1) EP1584883B1 (de)
AT (1) ATE344913T1 (de)
DE (1) DE602004003126T2 (de)
ES (1) ES2275199T3 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1012849B (de) * 1955-05-20 1957-07-25 Ludger Volpert Geschoss mit Selbstvortrieb
SE444722B (sv) * 1982-10-20 1986-04-28 Ffv Affersverket Motmassa, sammansatt av en vetskedel och en fast del, avsedd for rekylfritt vapen
SE506253C2 (sv) * 1995-04-11 1997-11-24 Simbal Ab Anordning vid bottenbricka

Also Published As

Publication number Publication date
ATE344913T1 (de) 2006-11-15
DE602004003126T2 (de) 2007-08-23
EP1584883A1 (de) 2005-10-12
DE602004003126D1 (de) 2006-12-21
ES2275199T3 (es) 2007-06-01

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