EP0357514B1 - Munitionsschutzhülle mit Mitteln, die deren Zerlegen erlauben - Google Patents

Munitionsschutzhülle mit Mitteln, die deren Zerlegen erlauben Download PDF

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Publication number
EP0357514B1
EP0357514B1 EP89402388A EP89402388A EP0357514B1 EP 0357514 B1 EP0357514 B1 EP 0357514B1 EP 89402388 A EP89402388 A EP 89402388A EP 89402388 A EP89402388 A EP 89402388A EP 0357514 B1 EP0357514 B1 EP 0357514B1
Authority
EP
European Patent Office
Prior art keywords
casing
envelope
metal
casing according
fibres
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
EP89402388A
Other languages
English (en)
French (fr)
Other versions
EP0357514A1 (de
Inventor
Jean-François Denis
René Thouron
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.)
Thomson Brandt Armements SA
Original Assignee
Thomson Brandt Armements 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 Thomson Brandt Armements SA filed Critical Thomson Brandt Armements SA
Priority to AT89402388T priority Critical patent/ATE91780T1/de
Publication of EP0357514A1 publication Critical patent/EP0357514A1/de
Application granted granted Critical
Publication of EP0357514B1 publication Critical patent/EP0357514B1/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
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
    • F42B12/58—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/76—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing

Definitions

  • the invention relates to a protective casing of ejectable ammunition comprising means allowing its cutting, an operation necessary for the ejection of the submunition (s) to be carried out without difficulty of cutting and ejection.
  • a weakening of the structure is provided and located for this purpose at the level where the cutting is to be made. This is obtained by pyrotechnic cylinders.
  • light alloy envelopes are used, in two or three parts linked together by mechanical connecting means calculated to yield under the action of inflatable systems or pyrotechnic jacks.
  • Another solution consists in providing detonating cords on the envelope made of light alloy or of composite material which ensure the cutting.
  • the problem is different since it involves opening openings in an envelope, these openings having the form of panels or cells of the envelope, by means of controlled forces.
  • the object of the invention is to overcome the drawbacks of the aforementioned solutions and to solve the problem of controlling the force to be exerted to obtain the desired opening.
  • a protective casing of ammunition made of metal, shaped by fusion and molding, intended to be cut at a fracturable line comprising for this purpose, in the zone where this fracturable line must be located, temperature-resistant fibers, the entire envelope and said zone being directly obtained by means of melting and molding operations, characterized in that the fibers are interposed in the form of a weft, the plane of which is perpendicular to the internal and external surfaces of the envelope so that, when the metal is poured into the mold, the metal binds the fibers together to form a strip of composite fiber-metal material of width (e) constituting an area of embrittlement.
  • Figure 1 is a schematic representation of an envelope section equipped, according to the invention.
  • FIGS. 2 and 3 illustrate two variants of the weft of fibers incorporated into the envelope during the casting operations, in accordance with the invention.
  • FIG. 4 shows the application of the forces (F) necessary to cut the envelope.
  • Figures 5 to 9 are illustrations of several examples of a breakable line that can be obtained on an envelope according to the invention.
  • the protective envelope or cell according to the invention is in the form of a part obtained by melting or molding with the addition of a weft of composite material, in line with the area where the cutting is to take place.
  • the entire envelope and fracturable zones come, according to the invention, directly from the melting and molding operations.
  • the envelope according to the invention is obtained by using a weft consisting of fibers which, during the casting of the molten metal, are crossed by the metal to form the composite material (fiber-metal) which constitutes the future fracturable line.
  • the structure obtained is illustrated by means of Figure 1 where we find the strip of fabric or weft (2) of width (e) whose plane is perpendicular to the inner and outer surfaces of the envelope (1) molded.
  • these frames can be, as the case may be, and as illustrated in FIGS. 2 and 3 respectively, wefts with wide meshes or with small meshes.
  • the spacing of the fibers (s1, s2) and their diameter ( ⁇ 1, ⁇ 2) are parameters that can be easily controlled. Under these conditions, the evaluation of the mechanical stresses of these areas, before and during cutting, is also controlled and can be adjusted by adjusting these parameters on demand in relation to the width (e) of the frame.
  • the actual cutting can be done by any known means such as a pyrotechnic cylinder. It suffices to quantify the necessary shock and to adjust the cylinder accordingly.
  • Such an envelope is illustrated by means of FIG. 4.
  • the envelope (1) comprises in this nonlimiting example, three parts (a), (b), (c) which must be cut and ejected.
  • pyrotechnic means apply to them, in a known manner, forces (F) whose value is a function of the dimensioning of the frame (2) of metal-fiber composite material previously calculated, frame which is more visible on Figure 1 which is an enlargement of the area (X) of the envelope (1).
  • Figures 5, 6 and 7 respectively illustrate the frangible lines (40) arranged longitudinally along the envelope (1) of a cargo ship (100), and (41) of a panel (101).
  • FIG. 8 represents the fracturable line (43) between two structural sections (A) and (B).
  • Figures 9a and 9b illustrate the fracturable line (44) cut out of cells (103).
  • the invention finds its application in the manufacture of rockets or cargo carriers carrying submunitions for which, at a given instant, it is necessary to be able, on the chosen combat zone, to cut and eject the protective envelope.
  • the invention allows perfect control of mechanical stresses, reliability of cutting and a competitive manufacturing cost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Soil Working Implements (AREA)
  • Catching Or Destruction (AREA)
  • Lighters Containing Fuel (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Woven Fabrics (AREA)

Claims (8)

  1. Durch Schmelzen und Gießen hergestellte Munitionsschutzhülle (1) aus Metall zum Zerlegen an einer Bruchlinie, mit für diesen Zweck vorgesehenen temperaturbeständigen Fasern in der Zone, in der die Bruchlinie liegen soll, wobei die gesamte Hülle und die Zone direkt mittels der Schmelz- und Gießvorgänge erhalten werden, dadurch gekennzeichnet, daß die Fasern in Form eines Gitters (2) eingefügt sind, dessen Ebene senkrecht zu den inneren und äußeren Flächen der Hülle so verlaufen, daß beim Gießen des Metalls in der Form das Metall die Fasern zur Bildung eines Bandes aus Faser-Metall-Verbundmaterial mit der Breite (e) miteinander verbindet, das eine Bruchzone bildet.
  2. Hülle nach Anspruch, dadurch gekennzeichnet, daß der Abstand (s1, s2) der Fasern und ihr Durchmesser (∅1, ∅2), die eine mehr oder weniger große Masche bilden, sowie die Breite (e) des Gitters (2) abhängig von den mechanischen Beanspruchungen berechnet werden, die die Hülle vor und während des Zerlegens aushalten soll.
  3. Hülle nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Bruchlinie (40) in Längsrichtung zu dieser angeordnet sind.
  4. Hülle nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Bruchlinien (41) ein Feld (101) bilden.
  5. Hülle nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Bruchlinie (42) das Zerlegen einer Geschoßspitze (102) gewährleistet.
  6. Hülle nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß der Bruchlinie (43) das Trennen der Hülle in zwei Abschnitt (A) und (B) gewährleistet.
  7. Hülle nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Bruchlinie (44) Öffnungen von Zellen (103) begrenzt.
  8. Hülle nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sie drei Bruchlinien aufweist.
EP89402388A 1988-09-02 1989-09-01 Munitionsschutzhülle mit Mitteln, die deren Zerlegen erlauben Expired - Lifetime EP0357514B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89402388T ATE91780T1 (de) 1988-09-02 1989-09-01 Munitionsschutzhuelle mit mitteln, die deren zerlegen erlauben.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8811495A FR2637065B1 (fr) 1988-09-02 1988-09-02 Enveloppe protectrice de munitions comportant des moyens permettant sa decoupe
FR8811495 1988-09-02

Publications (2)

Publication Number Publication Date
EP0357514A1 EP0357514A1 (de) 1990-03-07
EP0357514B1 true EP0357514B1 (de) 1993-07-21

Family

ID=9369665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89402388A Expired - Lifetime EP0357514B1 (de) 1988-09-02 1989-09-01 Munitionsschutzhülle mit Mitteln, die deren Zerlegen erlauben

Country Status (6)

Country Link
US (1) US4986188A (de)
EP (1) EP0357514B1 (de)
AT (1) ATE91780T1 (de)
DE (1) DE68907675T2 (de)
ES (1) ES2042032T3 (de)
FR (1) FR2637065B1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685467B1 (fr) * 1991-12-23 1994-02-04 Thomson Brandt Armements Dispositif de separation et de freinage aerodynamique de l'etage propulseur d'un missile.
FR2692973B1 (fr) * 1992-06-26 1994-10-14 Aerospatiale Elément d'obturation pour tube de lancement de munition et tube de lancement le comportant.
US5337673A (en) * 1993-12-17 1994-08-16 The United States Of America As Represented By The Secretary Of The Navy Controlled fragmentation warhead case
CH688727A5 (de) * 1994-08-26 1998-01-30 Contraves Pyrotec Ag Drallstabilisiertes Geschoss mit einer Nutzlast.
US5817969A (en) * 1994-08-26 1998-10-06 Oerlikon Contraves Pyrotec Ag Spin-stabilized projectile with payload
US6427574B1 (en) * 2001-04-11 2002-08-06 The United States Of America As Represented By The Secretary Of The Navy Submarine horizontal launch tactom capsule
US6817299B1 (en) 2003-12-10 2004-11-16 The United States Of America As Represented By The Secretary Of The Navy Fragmenting projectile having threaded multi-wall casing
US8522685B1 (en) * 2010-02-22 2013-09-03 The United States Of America As Represented By The Secretary Of The Army Multiple size fragment warhead
SE544060C2 (sv) * 2019-03-19 2021-11-30 Bae Systems Bofors Ab En stridsdel och ett förfarande för framställning av en stridsdel
US11454480B1 (en) 2019-06-12 2022-09-27 Corvid Technologies LLC Methods for forming munitions casings and casings and munitions formed thereby
DE102022002278A1 (de) 2022-06-23 2023-12-28 Diehl Defence Gmbh & Co. Kg Wirkkörper mit Sollbruchstellen für Geschosse

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1077997A (fr) * 1952-09-29 1954-11-15 Projectiles
US2872865A (en) * 1955-09-29 1959-02-10 Karsten S Skaar High strength fiber glass-metal construction and process for its manufacture
US3357356A (en) * 1961-07-19 1967-12-12 Elton L Bischoff Exploding missile case
BE635420A (de) * 1962-07-27
US4004518A (en) * 1965-06-21 1977-01-25 The United States Of America As Represented By The Secretary Of The Navy Self-forging fragmentation device
US3757694A (en) * 1965-10-22 1973-09-11 Us Navy Fragment core warhead
US3498224A (en) * 1968-10-04 1970-03-03 Us Navy Fragmentation warhead having circumferential layers of cubical fragments
US3757693A (en) * 1971-05-21 1973-09-11 Avco Corp Fragmentation wrap for explosive weapons
FR2325560A1 (fr) * 1975-09-26 1977-04-22 Matra Engins Perfectionnements aux magasins pour bombes fusees
SE407695B (sv) * 1977-08-31 1979-04-09 Bofors Ab Stridsdel av stal och sett att framstella den
DE2835557C2 (de) * 1978-08-14 1985-11-14 Rheinmetall GmbH, 4000 Düsseldorf Gefechtskopf für Geschosse und Raketen
FR2438686A1 (fr) * 1978-10-13 1980-05-09 France Etat Procede de fragilisation par bombardement electronique
DE2923877A1 (de) * 1979-06-13 1980-12-18 Rheinmetall Gmbh Geschosshuelle
US4301708A (en) * 1979-07-25 1981-11-24 The United States Of America As Represented By The Secretary Of The Navy Launch tube closure
US4648323A (en) * 1980-03-06 1987-03-10 Northrop Corporation Fragmentation munition
US4455943A (en) * 1981-08-21 1984-06-26 The Boeing Company Missile deployment apparatus
FR2551857B1 (fr) * 1983-09-14 1986-10-31 Michel Gerard Perfectionnement aux enveloppes generatrices d'eclats pour projectiles
US4498368A (en) * 1983-10-06 1985-02-12 The United States Of America As Representedby The Secretary Of The Navy Frangible fly through diaphragm for missile launch canister
SE441784B (sv) * 1984-04-02 1985-11-04 Bofors Ab Splitterbildande sprenggranatholje samt sett for att astadkomma detta genom ett pulvermetallurgiskt forfarande
DE8427780U1 (de) * 1984-09-21 1985-05-15 Rheinmetall GmbH, 4000 Düsseldorf Gefechtskopf

Also Published As

Publication number Publication date
FR2637065B1 (fr) 1993-10-15
EP0357514A1 (de) 1990-03-07
ES2042032T3 (es) 1993-12-01
ATE91780T1 (de) 1993-08-15
US4986188A (en) 1991-01-22
FR2637065A1 (fr) 1990-03-30
DE68907675D1 (de) 1993-08-26
DE68907675T2 (de) 1993-10-28

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