EP2079980B1 - Vorrichtung zum entschliessen einer munitionshülse - Google Patents

Vorrichtung zum entschliessen einer munitionshülse Download PDF

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Publication number
EP2079980B1
EP2079980B1 EP07848252A EP07848252A EP2079980B1 EP 2079980 B1 EP2079980 B1 EP 2079980B1 EP 07848252 A EP07848252 A EP 07848252A EP 07848252 A EP07848252 A EP 07848252A EP 2079980 B1 EP2079980 B1 EP 2079980B1
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EP
European Patent Office
Prior art keywords
ring
connecting ring
fuse
intermediate ring
deconfinement
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.)
Active
Application number
EP07848252A
Other languages
English (en)
French (fr)
Other versions
EP2079980A2 (de
Inventor
Stéphane Cotet
Laurent Desgland
Dominique Dion
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.)
Nexter Munitions SA
Original Assignee
Nexter Munitions 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
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Application filed by Nexter Munitions SA filed Critical Nexter Munitions SA
Publication of EP2079980A2 publication Critical patent/EP2079980A2/de
Application granted granted Critical
Publication of EP2079980B1 publication Critical patent/EP2079980B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B39/00—Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
    • F42B39/20—Packages or ammunition having valves for pressure-equalising; Packages or ammunition having plugs for pressure release, e.g. meltable ; Blow-out panels; Venting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/02—Fuze bodies; Fuze housings

Definitions

  • the technical field of the invention is that of the devices ensuring the deconfinement of a munition envelope containing an explosive charge and more particularly the deconfining devices for an explosive projectile body, whatever the caliber or the type of weapon pulling this projectile.
  • the deconfinement devices make it possible to avoid, for example, the detonation of a projectile as a result of a heating, for example during a fire.
  • the patent DE2131748 thus describes a closure cap of a projectile body that is put in place when the projectile is stored.
  • This plug has a closure plate which is connected by a fusible material. The temperature rise releases the plate which allows the evacuation of gases.
  • the heating can lead both to the initiation of the load itself as a result of the increase in pressure, the initiation of the rocket which also causes the detonation of the explosive charge.
  • This device comprises a connecting ring ensuring the connection of the rocket and the projectile ring which carries radial vents within which are arranged silicone plugs.
  • this device is however insufficiently effective because the total area of the vents is too small and does not ensure rapid deconfinement of the inside of the body of the projectile.
  • Such a device is complex because it implements a spring maintained in the compressed state.
  • the mechanical strength of the fuse material is also not ensured especially after long storage phases, which penalizes the reliability of this device.
  • the object of the invention is to propose a deconfining device that makes it possible in a simple and reliable manner to provide effective protection against accidental initiations due to the heating of the explosive charge of an ammunition and in particular of a projectile. 'artillery.
  • the device according to the invention ensures in particular this function even when the rocket is mounted on the body of the projectile.
  • the device according to the invention does not, however, interfere with the normal operation of the munition, ie the initiation of the explosive charge by the rocket.
  • the subject of the invention is a device for deconfining an envelope of a munition containing an explosive charge that can be initiated by a firing rocket, a device comprising a connecting ring connected to the envelope and making it possible to secure the rocket.
  • priming device to the casing characterized in that it comprises a means ensuring a weakened and shearable connection between the fuse and the connecting ring, which connection is sheared following an increase in the pressure inside the casing.
  • the casing, the connecting ring having a bottom forming a projectable plate on the explosive charge during the initiation of the rocket, bottom is also broken by the appearance of pressure within the body of the projectile.
  • the shearable connection means may comprise an intermediate ring which is interposed between the connecting ring and the rocket, which ring is connected to the rocket or to the connecting ring by a shearable element.
  • the intermediate ring may comprise an internal thread for receiving the rocket, the shearable element being disposed at an outer surface of the intermediate ring.
  • the shearable element of the intermediate ring may comprise at least one peripheral toothing intended to be housed in a complementary groove carried by the connecting ring.
  • the intermediate ring may comprise at least two longitudinal grooves delimiting radially deformable nozzles, the deformation of the nozzles allowing the establishment of the teeth in their grooves during attachment of the intermediate ring on the connecting ring.
  • the intermediate ring has more particularly at least one longitudinal tongue carried by its outer surface, tongue intended to be housed in a complementary groove carried by the connecting ring, and ensuring immobilization in rotation of the intermediate ring relative to the ring of connection.
  • the bottom may comprise at least one circular groove ensuring a decrease in its thickness.
  • the figure 1 shows in partial longitudinal section the front part of a munition 1 which is an artillery projectile.
  • This projectile is represented here schematically. It comprises an envelope or body 2 enclosing an explosive charge 3. Its front part AV carries a rocket 5.
  • the explosive charge 3 also bears at the level of its surface before a tablet 4 of an explosive priming composition.
  • a connecting ring 7 is connected to the body 2 of the projectile by a thread.
  • This connecting ring has a bottom 8 forming a projectable plate on the explosive charge 3; 4 during the initiation of the rocket 5.
  • the bottom 8 will advantageously comprise at least one circular groove 9 (see figure 3b ) which ensures a decrease in its thickness. This groove is obtained by machining a bottom face. It thus forms a zone of reduced thickness for the bottom 8.
  • the ring 7 is made of steel.
  • the thickness of the connecting ring at the bottom 8 is about 1 mm.
  • the initiation of the rocket 5 causes a cut of the bottom 8 at the groove 9.
  • the fuze 5 is fixed to the connecting ring 7 by means of a connecting means which comprises an intermediate ring 10 interposed between the connecting ring 7 and the fuze 5.
  • This intermediate ring 10 is connected to the rocket or connecting ring by a shearable element.
  • This ring 10 is open at both ends. It comprises an internal thread 11 which makes it possible to screw the rocket 5.
  • the intermediate ring 10 is made for example of plastic material. Depending on the operational constraints another material may be envisaged, for example brass.
  • the intermediate ring 10 has at its outer cylindrical surface 12 two peripheral peripheral teeth 13.
  • Each toothing 13 has in section a trapezoidal profile (see FIG. Figure 2c ) having an inclined flank 14 and a flank 15 straight and substantially perpendicular to the axis 16 of the ring 10.
  • the inclined side 14 is disposed at a front face 17 of the ring 10.
  • teeth 13 are intended to be housed in complementary grooves 18, which are carried by the connecting ring 7 (see figure 3b ).
  • the intermediate ring 10 further comprises at least two longitudinal slots 19 which extend over substantially half of the total height of the ring 10 and which delimit radially deformable nozzles 20.
  • the deformation of the nozzles 20 allows the insertion of the intermediate ring 10 into the connecting ring 7.
  • the slats 20 slide and deform radially without difficulty. They resume by their elasticity their initial position when the teeth 13 are in their grooves 18.
  • intermediate ring 10 comprises longitudinal tongues 21 which are borne by its external surface 12.
  • the tongues 21 make it possible to immobilize the intermediate ring 10 in rotation with respect to the connecting ring 7.
  • the intermediate ring 10 is thus after assembly completely integral both in rotation and in translation of the connecting ring 7.
  • tongues 21 could be implemented keys that would be housed in grooves of the intermediate ring and the connecting ring.
  • FIGS. 3a and 3b show the intermediate ring 10 fixed to the connecting ring 7.
  • the spouts 13 constitute a shearable element ensuring a connection between the two rings 7 and 10.
  • the nozzles 20 can no longer deform radially. Moreover, the straight flanks 15 of the teeth 13 prevent any extraction of the intermediate ring 10.
  • the number and dimensions of the teeth 13 are chosen according to the minimum pressure at which it is desired to ensure the deconfinement of the projectile.
  • the figure 4 thus shows the projectile 1 after rupture of the teeth 13.
  • the rocket 5 carries with it a portion of the intermediate ring 10.
  • the teeth 13 remain in their grooves 18.
  • the ejection of the rocket 5 leads to the opening of the hole 23 for filling the projectile 1.
  • the deconfinement is provided with an opening which is maximum for the evacuation of gases G.
  • the deconfining device thus makes it possible to ensure in a simple and reliable manner the protection of a projectile equipped with a firing rocket.
  • an intermediate ring 10 comprising, in place of the circular teeth 13, a shearable thread cooperating with a thread formed inside the connecting ring 7.
  • the shearable connection means will be constituted by a particular tapping of the inside of the connecting ring 7. This tapping will be defined in such a way as to shear at the occurrence of an internal pressure exceeding a certain threshold.
  • tapping which does not cover the entire internal cylindrical surface of the connecting ring 7 but a tapping which is interrupted by longitudinal zones that are not tapped and regularly distributed angularly.

Landscapes

  • General Engineering & Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Electrophotography Configuration And Component (AREA)
  • Food-Manufacturing Devices (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
  • Packages (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fuses (AREA)

Claims (7)

  1. Vorrichtung zum Entlasten einer Hülle (2) einer Munition (1), die eine Sprengladung (3) einschließt, die durch einen Initialzünder (5) initiiert werden kann, wobei die Vorrichtung einen Anschlussring (7) umfasst, der mit der Hülle verbunden ist und es ermöglicht, den Initialzünder fest mit der Hülle zu verbinden, wobei die Vorrichtung dadurch gekennzeichnet ist, dass sie ein Mittel (10) umfasst, das eine versprödete und abscherbare Verbindung zwischen dem Zünder (5) und dem Anschlussring (7) gewährleistet, wobei die Verbindung in Folge einer Erhöhung des Drucks im Inneren der Hülle (2) abgeschert vorliegt, wobei der Anschlussring (7) einen Boden (8) umfasst, der eine auf die Sprengladung (3, 4) schleuderbare Platte bei der Initiierung des Zünders (5) bildet, wobei der Boden ebenfalls durch das Auftreten eines Drucks im Inneren des Körpers (2) des Projektils (1) zerbrochen wird.
  2. Entlastungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das abscherbare Verbindungsmittel einen Zwischenring (10) umfasst, der zwischen den Anschlussring (7) und den Zünder (5) eingefügt ist, wobei der Ring mit dem Zünder oder mit dem Anschlussring durch ein abscherbares Element (13) verbunden ist.
  3. Entlastungsvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der Zwischenring (10) ein Innengewinde (11) umfasst, das es ermöglich, den Zünder (5) aufzunehmen, wobei des abscherbare Element (13) im Bereich einer äußeren Fläche (12) des Zwischenrings (10) angeordnet ist.
  4. Entlastungsvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das abscherbare Element des Zwischenrings (10) wenigstens eine Randzahnung (13) umfasst, die dafür vorgesehen ist, sich in einer komplementären Kehle (18) einzufügen, die von dem Anschlussring (7) getragen wird.
  5. Entlastungsvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der Zwischenring (10) wenigstens zwei Längsrillen (19) umfasst, die radial verformbare Spitzen (20) abgrenzen, wobei die Verformung der Spitzen (20) das Anordnen der Zähne (13) in ihren Kehlen (18) bei der Befestigung des Zwischenrings am Anschlussring (7) ermöglicht.
  6. Entlastungsvorrichtung nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, dass der Zwischenring (10) wenigstens eine Längslasche (21) umfasst, die von dessen Außenfläche (12) getragen wird, wobei die Lasche sich in einer komplementären Rille (22) einfügt, die von dem Anschlussring (7) getragen wird und eine Blockierung in Drehrichtung des Zwischenrings (10) in Bezug auf den Anschlussring (7) gewährleistet.
  7. Entlastungsvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Boden (8) wenigstens eine kreisförmige Kehle (9) umfasst, die eine Verminderung seiner Dicke gewährleistet.
EP07848252A 2006-09-29 2007-09-19 Vorrichtung zum entschliessen einer munitionshülse Active EP2079980B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0608681A FR2906606B1 (fr) 2006-09-29 2006-09-29 Dispositif de deconfinement d'une enveloppe d'une munition.
PCT/FR2007/001518 WO2008040860A2 (fr) 2006-09-29 2007-09-19 Dispositif de deconfinement d'une enveloppe d'une munition

Publications (2)

Publication Number Publication Date
EP2079980A2 EP2079980A2 (de) 2009-07-22
EP2079980B1 true EP2079980B1 (de) 2010-03-17

Family

ID=38005783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07848252A Active EP2079980B1 (de) 2006-09-29 2007-09-19 Vorrichtung zum entschliessen einer munitionshülse

Country Status (8)

Country Link
US (1) US7930975B2 (de)
EP (1) EP2079980B1 (de)
AT (1) ATE461417T1 (de)
DE (1) DE602007005394D1 (de)
ES (1) ES2342856T3 (de)
FR (1) FR2906606B1 (de)
IL (1) IL197816A (de)
WO (1) WO2008040860A2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014013316A1 (de) * 2014-09-08 2016-03-10 Diehl Bgt Defence Gmbh & Co. Kg Behältnis zur Aufbewahrung eines Explosivstoffs

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2922638B1 (fr) * 2007-10-23 2013-07-05 Tda Armements Sas Chargement energetique a deconfinement controle et munition equipee d'un tel chargement
US8381657B1 (en) * 2008-10-24 2013-02-26 The United States Of America As Represented By The Secretary Of The Army Enhanced grenade
FR2948186B1 (fr) 2009-07-17 2015-02-20 Tda Armements Sas Munition comprenant des moyens pour neutraliser son chargement explosif
FI122080B (fi) * 2010-02-19 2011-08-15 Patria Land & Armament Oy Nostoelin ammuksia varten
US8381656B1 (en) * 2011-09-09 2013-02-26 The United States Of America As Represented By The Secretary Of The Army Mechanical cartridge and grenade venting
RU2479824C1 (ru) * 2011-09-12 2013-04-20 Открытое акционерное общество "Производственное объединение "Завод имени Серго" Боевая часть снаряда
US8505458B1 (en) * 2012-01-27 2013-08-13 The United States Of America As Represented By The Secretary Of The Navy Venting cap system
FR2995075B1 (fr) 2012-08-29 2014-08-29 Nexter Munitions Fusee d'amorcage permettant le deconfinement d'une enveloppe de munition
DE102013014811B4 (de) * 2013-09-05 2015-04-09 Diehl Bgt Defence Gmbh & Co. Kg Geschoss
US9410782B2 (en) * 2014-04-18 2016-08-09 Nostromo Holdings, Llc Multi-action fuze and warhead separator fitted to a munition
US10088285B1 (en) * 2016-12-15 2018-10-02 The United States Of America As Represented By The Secretary Of The Navy Cook-off mitigation systems using an uncanistered outgassing pad
US10724836B1 (en) * 2016-12-15 2020-07-28 The United States Of America, As Represented By The Secretary Of The Navy Cook-off mitigation systems
US10101139B1 (en) * 2016-12-15 2018-10-16 The United States Of America As Represented By The Secretary Of The Navy Cook-off mitigation systems
FR3090086B1 (fr) * 2018-12-13 2020-12-11 Thales Sa Dispositif de deconfinement d’un chargement explosif et munition equipee d’un tel dispositif
CN109974544B (zh) * 2019-04-26 2024-02-06 中国工程物理研究院电子工程研究所 弹引连接结构及起爆装置

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CH167210A (fr) * 1933-06-07 1934-02-15 Schwob Freres & Cie Sa Carter pour mécanisme de fusée mécanique.
GB964556A (en) * 1962-06-29 1964-07-22 Carl Olaf Julius Nordzell Ammunition safety device
DE2131748A1 (de) 1971-06-25 1972-12-28 Foerenade Fabriksverken Schutzvorrichtung fuer Granaten
EP0088543B1 (de) * 1982-03-04 1987-09-30 Royal Ordnance plc Sicherheitsvorrichtung für Trägergeschoss
US5035181A (en) * 1985-01-22 1991-07-30 The United States Of America As Represented By The Secretary Of The Navy Thermosensitive pop-out device
FR2686410A1 (fr) * 1992-01-22 1993-07-23 France Etat Armement Dispositif assurant le deconfinement d'une charge contenant un explosif par mise en óoeuvre d'un element deformable en materiau a memoire de forme.
DE4336808C2 (de) * 1993-10-28 1997-07-10 Buck Chem Tech Werke Prüfgeschoß zum Anzeigen der Zündfunktion eines Geschosses
FR2742221B1 (fr) * 1995-12-12 1998-02-27 Soc D Ateliers Mecaniques De P Dispositif de deconfinement pour munition
FR2781877A1 (fr) * 1998-07-30 2000-02-04 Giat Ind Sa Dispositif d'amorcage pour obus explosif
US7025000B1 (en) * 2002-04-11 2006-04-11 The United States Of America As Represented By The Secretary Of The Army Mechanism for reducing the vulnerability of high explosive loaded munitions to unplanned thermal stimuli
FR2864219B1 (fr) * 2003-12-22 2006-02-24 Giat Ind Sa Dispositif de deconfinement d'une enveloppe de munition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014013316A1 (de) * 2014-09-08 2016-03-10 Diehl Bgt Defence Gmbh & Co. Kg Behältnis zur Aufbewahrung eines Explosivstoffs
DE102014013316B4 (de) * 2014-09-08 2016-04-07 Diehl Bgt Defence Gmbh & Co. Kg Behältnis zur Aufbewahrung eines Explosivstoffs

Also Published As

Publication number Publication date
FR2906606A1 (fr) 2008-04-04
WO2008040860A2 (fr) 2008-04-10
US20100024675A1 (en) 2010-02-04
IL197816A (en) 2013-07-31
ATE461417T1 (de) 2010-04-15
ES2342856T3 (es) 2010-07-15
DE602007005394D1 (de) 2010-04-29
US7930975B2 (en) 2011-04-26
EP2079980A2 (de) 2009-07-22
WO2008040860A3 (fr) 2008-05-22
IL197816A0 (en) 2009-12-24
FR2906606B1 (fr) 2010-12-31

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