EP2383539B1 - Elektrische Zündungsvorrichtung für ein Geschoss - Google Patents

Elektrische Zündungsvorrichtung für ein Geschoss Download PDF

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Publication number
EP2383539B1
EP2383539B1 EP11290192A EP11290192A EP2383539B1 EP 2383539 B1 EP2383539 B1 EP 2383539B1 EP 11290192 A EP11290192 A EP 11290192A EP 11290192 A EP11290192 A EP 11290192A EP 2383539 B1 EP2383539 B1 EP 2383539B1
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EP
European Patent Office
Prior art keywords
detonator
projectile
priming device
washer
plate
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
EP11290192A
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English (en)
French (fr)
Other versions
EP2383539A1 (de
Inventor
Pierre Pavec
Renaud Lafont
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
Application filed by Nexter Munitions SA filed Critical Nexter Munitions SA
Publication of EP2383539A1 publication Critical patent/EP2383539A1/de
Application granted granted Critical
Publication of EP2383539B1 publication Critical patent/EP2383539B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/40—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/005—Combination-type safety mechanisms, i.e. two or more safeties are moved in a predetermined sequence to each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/18—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved
    • F42C15/188—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved using a rotatable carrier
    • F42C15/192—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved using a rotatable carrier rotatable in a plane which is parallel to the longitudinal axis of the projectile
    • F42C15/196—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved using a rotatable carrier rotatable in a plane which is parallel to the longitudinal axis of the projectile by the action of centrifugal or inertia forces on the carrier body, e.g. the carrier having eccentrically mounted weights or eccentric centre of gravity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/28—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids
    • F42C15/31—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids generated by the combustion of a pyrotechnic or explosive charge within the fuze
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/14—Double fuzes; Multiple fuzes
    • F42C9/147—Impact fuze in combination with electric time fuze

Definitions

  • the technical field of the invention is that of devices for priming a projectile.
  • these devices comprise a safety and arming device which ensures a misalignment of the pyrotechnic initiation chain and an electric initiation detonator which is actuated by a setting module. electronic fire.
  • the electronic firing module makes it possible to manage different modes of operation for the device, for example: a chronometric mode (with programming before timing firing), an impact mode, a delayed impact mode ...
  • the chronometric module incorporates one or more electronic cards as well as an energy source.
  • the detonator is most often attached to a movable primer door which is carried by the security and arming device. It is connected to the electronic module by conductors or flexible conductive tracks.
  • the document US2004 / 0144279 which constitutes the starting point for the preamble of claim 1, also describes a device for starting a projectile comprising a safety and arming device. It comprises a first electric initiation detonator which is actuated by a module. electronic firing, a second detonator which is secured to a rotor of the safety and arming device. The second detonator is operated by a moving striker.
  • This striker is not actuated by the gases of the first detonator but by a spring.
  • the object of the invention is to propose an architecture in which integration into a projectile is simplified because the safety and arming device is separated from the electronic module and the pyrotechnic component that is triggered by the latter.
  • the subject of the invention is a launching device for a projectile comprising a safety and arming device, a first electric initiation detonator which is actuated by an electronic firing module, a second detonator which is secured to a rotor or flap of the safety and arming device, and a moving striker (15) the second detonator being actuated by said moving striker, characterized in that the moving striker is arranged facing the first detonator so as to be thrown by the gases resulting from the initiation of the latter and is secured to a spacer plate fixed relative to a body of the projectile, the plate having a weakening groove surrounding the striker.
  • the weakening groove may delimit a bucket integral with the striker, bucket delimiting a cavity in which the first detonator is positioned.
  • the weakening groove may delimit a median wafer having a face facing the first detonator.
  • the device may then comprise a washer which will be integral with the body of the projectile, washer against which the plate will be applied and which will comprise a medial portion against which the face of the median wafer will bear.
  • the washer may include holes for casting a plastic coating material of the electronic firing module.
  • the holes may be made at a circular groove of the washer, groove for receiving a portion of the plastic coating material.
  • the first detonator and the striker will advantageously be arranged along the axis of the projectile.
  • the first detonator can be connected to an electronic board of the firing module.
  • the electronic card may carry a cup surrounding at least in part the first detonator, cup ensuring electrical contact between the card and the first detonator.
  • a priming device 1 (or rocket) according to a first embodiment of the invention is incorporated in a body 2 of a projectile.
  • the projectile is here of gyro-stabilized type, that is to say animated with a rotation around its axis 16 which is communicated by the tube of the weapon.
  • This device comprises a safety and arming device 3 and a first detonator 5, which is electrically initiated, and which is actuated by an electronic firing module 4.
  • the safety and arming device 3 is a device comprising a rotor 6 carrying a second detonator 7 which is percussion-type. This device is incorporated in a housing 9a, 9b which is housed in a bore 20 of the body 2 of the projectile.
  • the rotor 6 has an unbalance and is disposed in a cage 8 which is pivotally mounted relative to the housing 9a, 9b of the safety device and arming.
  • the pivoting is done at the level of pins formed on the front and rear ends of the cage 8 and which are housed in complementary bores of the parts 9a and 9b of the housing.
  • the rotor 6 is immobilized in its safety position as shown in FIG. figure 1 by radial pins 10, themselves held in place by a hairspring 11.
  • the rotor 6 is also immobilized by a lock 12 in the form of a cylindrical sleeve and which is held pressed against a flat part 13 of the rotor by a spring washer 14.
  • the sleeve 12 has an axial bore which allows a tip of a striker 15 to pass through.
  • the striker 15 is not a conventional striker set in motion by a self-destruction spring or by the mere inertia of the impact on a target.
  • Striker 15 is here instead fixed relative to the body 2 of the projectile (and the priming device).
  • the striker 15 is integral with a cylindrical cup 17 which is itself secured to a spacer plate 18.
  • the spacer plate 18 is pinched between the bottom 9b of the housing of the safety device and arming 3 and a shoulder 19 of the internal bore 20 of the body 2.
  • the plate 18 is fixed with respect to the body 2 of the projectile.
  • the plate 18 has a groove 18a which delimits the cup 17. This groove is circular and constitutes an embrittlement of the plate 18 surrounding the striker 15.
  • the cup 17 delimits a cavity 17a which is intended to receive the electric detonator 5.
  • the electronic firing module 4 here comprises two electronic cards 21a, 21b on which are fixed components that need not be described in detail.
  • One of the cards carries in particular a microprocessor which receives by conductors (not shown) appropriate programming provided by a programming unit integral with the weapon.
  • the card 21b disposed opposite the bucket 17 carries the first detonator 5 which is housed in the cavity 17a of the bucket.
  • the first detonator 5 is connected to the card 21b by its axial contact at a deformable pin connector carried by the card.
  • the electronic card carries a cup 22 which partially surrounds the electric detonator 5 and constitutes a second electrical contact for the first detonator 5 (contact between the electronic card and the metal cell of the first detonator).
  • the washer 14 is designed to prevent a subsequent return of the sleeve to the rotor and thus includes tabs (not visible in the figures but which are described by FR2689972 ).
  • the figure 3 shows the configuration of the device when the electronic module 4 has controlled the initiation of the electric detonator 5.
  • the pressure of the gases generated by the latter causes the shearing of the groove 18a delimiting the bucket 17 and the projection of the striker 15 towards the second detonator 7 at the through the socket 12 and the initiation of the latter and the projectile.
  • the invention makes it possible to maintain a safety and arming device already defined for a projectile family and, by associating it with an electronic module and an electric detonator, it authorizes the definition of a projectile firing device conferring operating modes on trajectory (firing after programmed delay).
  • an advanced priming device is made by limiting the development costs and it becomes possible to standardize the use of a given security and arming device in a whole family of projectiles of different calibres and having electronic structures. different.
  • a priming device has been described here, the safety and arming device of which implements the solutions described by the patent. FR2689972 . It is of course possible to define a priming device according to the invention which implements a safety and arming device of different design. It suffices simply that this device comprises a percussion detonator which is integral with a rotor or a shutter, the striker of this detonator being arranged facing the electric detonator so as to be projected by the gases resulting from the initiation of the latter.
  • the figure 4 shows in the safety position a second embodiment of a priming device 1 according to the invention.
  • This mode differs from the previous one by the shape of the spacer plate 18.
  • This plate 18 carrying the striker 15 is represented more precisely in the figure 5 . Note that, unlike the previous mode, the plate 18 has no bucket.
  • the plate 18 (which is circular) always comprises a groove 18a of embrittlement which surrounds a base 15a of the striker 15.
  • the weakening groove 18a delimits on the plate 18 a cylindrical central plate 18b at which the base 15a of the firing pin is crimped.
  • a rear face 18c of the plate is arranged opposite the first detonator 5 ( figure 4 ).
  • the device also comprises a washer 23 which is made of plastic. This washer is threaded and is screwed into the bore 20 which thus carries a tapping.
  • the washer 23 has an axial hole 24 which connects the first detonator 5 and the rear face 18c of the plate 18.
  • a countersink 25 surrounds the axial hole 24 and caps the first detonator 5.
  • the washer 23 is shown in front view at the figure 6 . It is noted that it comprises a second counterbore 26 which is situated on the face against which the plate 18 is applied. This second counterbore 26 allows the centering of the plate 18 relative to the device (and in particular with respect to the second detonator 5). .
  • the second counterbore 26 is in the same plane as a median portion 23b of the washer 23 against which the face 18c of the median plate 18b of the plate 18 carrying the firing pin 15 rests.
  • the washer 23 has three holes 27 regularly distributed angularly (so 120 ° from each other).
  • the holes 27 open at a circular groove 28 which is disposed between the middle part 23b of the washer and the second countersink 26.
  • each hole 27 is extended by a conical flare 27a on the side of the washer opposite to the circular groove 28.
  • the holes 27 are intended to allow the casting of a plastic material 29 ensuring the coating of the electronic firing module 4 on which is fixed the first detonator 5.
  • a coating is conventional in the field of ammunition safety devices . It protects the electronic components by damping some of the shocks.
  • the coating 29 saves the front face of the first detonator 5.
  • the groove 28 can receive the overflow of the plastic coating material after filling.
  • the plate 18 Due to the pinched mounting of the plate 18 between the washer 23 and the bottom 9b of the housing of the safety and arming device, the plate 18 is secured to the body 2 of the projectile.
  • the washer 23 does not interfere with the operation of the first detonator 5 which is similar to that described above.
  • the pressure of the gases that will be generated by the first detonator 5 will cause the shear of the groove 18a delimiting the median plate 18b and the projection of the striker 15 towards the second detonator 7 through the sleeve 12.
  • the washer 23 serves to provide an axial support for the middle plate 18b.
  • Such a support makes it possible to contain the forces of inertia which are exerted following the direction Fi during the shooting. This prevents shearing of the furrow 18a consecutive shooting without preventing the shear groove 18a as a result of the initiation of the first detonator 5.
  • Such a provision makes the device reliable and allows for grooves 18a relatively fragile.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Claims (9)

  1. Vorrichtung zum Zünden (1) eines Projektils, umfassend eine Sicherungs- und Ladevorrichtung (3), einen ersten Sprengzünder (5) mit elektrischer Initiierung, welcher durch ein elektronisches Zündmodul (4) betätigt wird, einen zweiten Sprengzünder (7), der fest mit einem Rotor (6) oder einer Klappe der Sicherungs- und Ladevorrichtung (3) verbunden ist, und einen beweglichen Schlagbolzen (15), wobei der zweite Sprengzünder (7) durch den genannten beweglichen Schlagbolzen (15) betätigt wird, dadurch gekennzeichnet, dass der bewegliche Schlagbolzen (15) dem ersten Sprengzünder (5) derartig gegenüber steht, dass er durch die sich von der Initiierung dieses Letzteren resultierenden Gase weg geschleudert wird, und fest mit einer in Bezug auf einen Körper (2) des Projektils festen Distanzplatte (18) verbunden ist, wobei die Platte (18) eine Versprödungsrille (18a) umfasst, welche den Schlagzünder (15) umgibt.
  2. Zündvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Versprödungsrille (18a) einen fest mit dem Schlagbolzen verbundenen Becher (17) abgrenzt, wobei der Becher (17) eine Vertiefung (17a) abgrenzt, in welcher der erste Sprengzünder (5) angeordnet ist.
  3. Zündvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Versprödungsrille (18a) eine in der Mitte liegende Scheibe (18b) abgrenzt, welche eine dem ersten Sprengzünder gegenüberliegende Fläche (18c) umfasst.
  4. Zündvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass sie einen Teller (23) umfasst, welcher fest mit dem Körper (2) des Projektils verbunden ist, wobei die Platte (18) an den Teller angelegt ist, welcher einen in der Mitte liegenden Abschnitt (23b) umfasst, an welchem sich die Fläche (18c) der in der Mitte liegenden Scheibe (18b) abstützt.
  5. Zündvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der Teller (23) Bohrungen (27) umfasst, welche das Vergießen eines Kunststoffes (29) zur Ummantelung des elektronischen Zündmoduls (4) ermöglicht.
  6. Zündvorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Löcher (27) im Bereich einer kreisförmigen Nut (28) des Tellers (23) ausgeführt sind, wobei die Nut einen Teil des Kunststoffes zur Ummantelung (29) aufnimmt.
  7. Zündvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der erste Sprengzünder (5) und der Schlagbolzen (15) gemäß der Achse des Projektils angeordnet sind.
  8. Zündvorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der erste Sprengzünder (5) mit einer Elektronikkarte (21b) des Zündmoduls (4) verbunden ist.
  9. Zündvorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Elektronikkarte (21b) eine Kapsel (22) trägt, welche wenigstens zum Teil den ersten Sprengzünder (5) umgibt, wobei die Kapsel einen elektrischen Kontakt zwischen der Karte (21b) und dem ersten Sprengzünder gewährleistet.
EP11290192A 2010-04-27 2011-04-20 Elektrische Zündungsvorrichtung für ein Geschoss Active EP2383539B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1001799A FR2959303B1 (fr) 2010-04-27 2010-04-27 Dispositif d'amorcage a initiation electrique pour projectile

Publications (2)

Publication Number Publication Date
EP2383539A1 EP2383539A1 (de) 2011-11-02
EP2383539B1 true EP2383539B1 (de) 2012-12-12

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ID=43243711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11290192A Active EP2383539B1 (de) 2010-04-27 2011-04-20 Elektrische Zündungsvorrichtung für ein Geschoss

Country Status (4)

Country Link
US (1) US8631743B2 (de)
EP (1) EP2383539B1 (de)
ES (1) ES2401179T3 (de)
FR (1) FR2959303B1 (de)

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LU53848A1 (de) * 1967-06-09 1969-04-22
US3595169A (en) * 1969-09-18 1971-07-27 Gen Electric Time delay fuze
DE2255547C3 (de) * 1972-11-13 1979-10-11 Diehl Gmbh & Co, 8500 Nuernberg Schalteinrichtung an elektrischen Geschoßzündern
GB1422990A (en) * 1973-06-13 1976-01-28 Diehl Safety device on an electrical projectile fuze
CH622885A5 (de) * 1978-07-27 1981-04-30 Redon Trust
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DE3165530D1 (en) * 1980-07-02 1984-09-20 Rheinmetall Gmbh Fuse for spinning projectiles
DE3049082C2 (de) * 1980-12-24 1984-08-23 Diehl GmbH & Co, 8500 Nürnberg Sicherungseinrichtung für einen Zünder
DE3262029D1 (en) * 1981-06-30 1985-03-07 Oerlikon Buehrle Ag Safety means for a fuze of a spin-stabilised projectile
FR2533686B1 (fr) 1982-09-24 1987-01-02 Manurhin Dispositif de securite a cage tournante pour projectile giratoire
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US5243912A (en) * 1991-12-09 1993-09-14 General Electric Co. Arming delay, dual environment safe, fuze
FR2689972B1 (fr) 1992-04-14 1995-08-11 Manurhin Defense Dispositif de securite et d'armement pour fusee de projectile comportant un moyen anti-vibratoire.
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FR2724750B1 (fr) * 1994-09-16 1996-12-06 Thomson Csf Carte electronique avec voyant de bon fonctionnement
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JP3803636B2 (ja) * 2002-12-26 2006-08-02 本田技研工業株式会社 バス接続用点火装置
DE10302967B4 (de) * 2003-01-25 2006-04-06 Junghans Feinwerktechnik Gmbh & Co. Kg Geschosszünder mit einem Kraftelement
US7600475B1 (en) * 2005-03-31 2009-10-13 The United States Of America As Represented By The Secretary Of The Army Multi-mode fuze
FR2912192B1 (fr) * 2007-02-07 2010-09-10 Eris Rivet aveugle hautes performances notamment pour fixation de structure
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FR2944348A1 (fr) * 2009-04-10 2010-10-15 Nexter Munitions Dispositif de mise a feu de munition par percussion

Also Published As

Publication number Publication date
FR2959303B1 (fr) 2012-04-06
EP2383539A1 (de) 2011-11-02
FR2959303A1 (fr) 2011-10-28
US8631743B2 (en) 2014-01-21
US20110259226A1 (en) 2011-10-27
ES2401179T3 (es) 2013-04-17

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