EP0395520A1 - Projectile porteur muni d'un dispositif d'éjection pour des sous-munitions - Google Patents

Projectile porteur muni d'un dispositif d'éjection pour des sous-munitions Download PDF

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Publication number
EP0395520A1
EP0395520A1 EP90401137A EP90401137A EP0395520A1 EP 0395520 A1 EP0395520 A1 EP 0395520A1 EP 90401137 A EP90401137 A EP 90401137A EP 90401137 A EP90401137 A EP 90401137A EP 0395520 A1 EP0395520 A1 EP 0395520A1
Authority
EP
European Patent Office
Prior art keywords
containers
vector
mines
cavity
envelope
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.)
Withdrawn
Application number
EP90401137A
Other languages
German (de)
English (en)
French (fr)
Inventor
Serge Borderieux
Georges Cousin
Gérard Sauvestre
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.)
Giat Industries SA
Original Assignee
Giat Industries SA
Delegation Generale pour lArmement
Gouvernement de la Republique Francaise
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 Giat Industries SA, Delegation Generale pour lArmement, Gouvernement de la Republique Francaise filed Critical Giat Industries SA
Publication of EP0395520A1 publication Critical patent/EP0395520A1/fr
Withdrawn legal-status Critical Current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
    • F42B12/60—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles the submissiles being ejected radially

Definitions

  • the field of the present invention is that of devices making it possible to eject, on a trajectory and in a radial direction from a vector, containers placed inside the envelope of the latter.
  • a vector is understood to mean a mobile on its own trajectory, whether after firing from a launcher (in this case the vector will be a projectile such as a rocket), or after dropping from an aircraft (bomb, transporter of submunition).
  • Vectors ejecting containers on a trajectory are relatively widespread today. They are used both for dispersing autonomous sub-projectiles equipped with homing devices and capable of each seeking their target, as for the dissemination of mines or anti-vehicle or anti-personnel bombs.
  • Patent EP0169956 describes a first type of solution in which the sub-projectiles are held integral with an annular support by means of bolt flanges.
  • a charge generating gas is initiated and causes on the one hand the release of the latches and on the other hand the ejection of the sub-projectiles by pistons.
  • Such an ejection device is very complex, which increases the risk of malfunctions.
  • the speed of ejection is limited by the inertia of the mechanical parts present, and is also linked to the elasticity of the locking bolt which is maintained in constrained during the entire storage time of the vector, losses of mechanical characteristics are therefore to be feared, which reduces the reliability of this device.
  • Such a device is limited from the point of view of the speed of ejection by the time necessary to inflate the bags.
  • the flexible bags being kept folded inside the vector, a deterioration in their mechanical characteristics is to be feared, which could cause either an asymmetry of the inflation, therefore of the ejection, or a rupture of one of the bags preventing thus the dispersion.
  • the subject of the invention is a device for ejecting, on a trajectory and in a radial direction, containers arranged in a ring inside the envelope of a vector, a device characterized in that it comprises a firstly a detonating charge placed at the level of the axis of the vector and extending substantially over the entire length of all the containers, and secondly means ensuring the confinement of this charge, and in that the containers are kept in contact or integral with the confinement means by holding means at the time of initiation of the detonating charge, the contact or common surface being such that its trace in radial section has a mediator having a radial direction relative to the vector.
  • the containment means may include a cavity formed by the juxtaposition of the different containers.
  • the containment means may also include a case which is in contact with the containers.
  • the flat faces of two adjacent containers are kept in mutual contact by the holding means and are oriented radially relatively to the vector, and in radial section, the angle formed by the traces of the two flat faces of each container has for bisector the mediator of the trace of the intermediate surface of the container considered.
  • the fragmentation means may include cutting cords arranged facing the envelope along an axial direction of the vector, for example in the extension of the flat faces of the containers.
  • the holding means may comprise at least one cylindrical strip surrounding all of the containers and arranged so as to be broken by the cutting cords.
  • the device according to the invention will preferably include an ignition system, the firing of which is controlled by a rocket and which causes the initiation of the cutting cords then of the detonating charge by means of a delay.
  • the invention may be applied to a vector such that all of the containers have rotational symmetry of order three relative to its axis, and that the containers are mines.
  • a vector 1 which is a projectile with reduced speed of rotation such as a rocket, comprises a rear part 15 on which will be arranged a tail unit not shown, an envelope 3, and a warhead 14 containing a rocket 20 as well as an ignition system which will be described in more detail below.
  • the envelope 3 contains a number of containers 2 which are here dispersible mines, of the type for example of those described in patents FR2475716 and FR2448708.
  • FIG. 2 which is a section of the previous in a radial direction, we see that the mines are arranged in a ring around the axis of the vector.
  • the envelope thus contains a stack of several layers, each layer being constituted by a group of three mines regularly distributed around the axis of the vector.
  • Each mine has at least two lateral flat faces 9 separated by a so-called intermediate surface 6.
  • the flat faces of the different mines constituting a group of three are kept in mutual contact by holding means which comprise a substantially cylindrical metal strip 11 surrounding each group of three mines.
  • the holding means also comprise triangular spacers 12 which are inserted between each group of three mines and which are arranged in notches 16 made on the mines.
  • a housing 17 is arranged at the tops of each spacer 12.
  • a longitudinal wedge 13, extending over substantially the entire length of the vector 1, is arranged at each group of overlapping housings.
  • the wedges carry means for fragmenting the envelope 3 which here consist of longitudinal cutting cords 10 of known type (for example hexogen cords under lead sheath).
  • Two circular cutting lines 24 (only the front line is shown), arranged at the front and rear part of the vector, are intended to separate the warhead 14 and the rear part 15 from the rest of the vector and complete the means for fragmenting the 'envelope.
  • the metal strips 11 make the cutting cords 10 and the longitudinal wedges 13 integral with the assembly formed by the spacers 12 and the leads 2.
  • the holding means thus described therefore make all the mines and the cutting means integral.
  • the subassembly thus formed is made integral with the vector in rotation and in translation in a conventional manner and not shown in detail.
  • connection in rotation For example, to make the connection in rotation, provide drive pins disposed between the rear part 15 and the spacer 12 of the first group of mines.
  • the last group of mines comes to bear on a cover 25 which carries the circular cord 24 in a peripheral groove and which is made integral with the warhead and the casing for example by radial pins .
  • the cover carries notches allowing it to receive the spacer 12 which ensures its connection in rotation with the last group of mines. It also carries an orifice 26 allowing the passage of a line of hexogen which constitutes a detonating charge 4 whose function will be studied below, sealing means (here O-rings) are interposed between the orifice 26 and the charge 4.
  • the rear part will carry the second circular cutting cord, for example at the level of a circular groove arranged on a second cover similar to the cover 25 but having no passage orifice for the detonating charge.
  • the mines thus joined together leave substantially at the level of the axis of the vector a cavity 5 of triangular section which is delimited mainly by the juxtaposition of the various intermediate surfaces 6 of each of the mines as well as the lateral surfaces of the spacers 12.
  • the stacked mines have relative contact surfaces, on the one hand between the mines constituting a group of three (flat faces 9), and on the other hand between the different groups of mines (upper faces 18 and lower 19).
  • the detonating charge 4 is disposed inside the cavity 5 and it extends substantially over the entire length of the cavity 5, therefore over the entire length of all the mines.
  • the cavity 5 thus delimited constitutes a means of confinement for the detonating charge 4.
  • the confinement means are completed by the cover 25 carrying the sealing means as well as by the closed cover disposed at the level of the base.
  • the mines by delimiting the cavity 5 by their intermediate surfaces 6, are integral with the confinement means thus created.
  • the intermediate surface 6 of each mine has a perpendicular bisector, marked at, whose direction is radial relative to the vector.
  • This perpendicular bisector 7 is moreover the bisector of the angle formed by the planar faces 9 of the mine considered.
  • the spacers 7 have an angular orientation relative to the groups of mines which is such that the cutting cords 10 are arranged in the extension of the planar faces 9 of the mines.
  • FIG. 1 also schematically represents the ignition system of the cutting cords 10 as well as the detonating charge 4.
  • the ignition system comprises a first relay 21 which is initiated by the rocket 20, a delay system 22, here constituted by a retarding pyrotechnic composition, but any other type of delay, in particular electronic delay, could be envisaged, and a second relay 23 .
  • the first relay 21 includes three radial outputs corresponding to the three cutting cords 10.
  • the second relay 23 is connected to the detonating charge 4.
  • the delay system ensures that the fragmentation of the projectile envelope is initiated before the initiation of the detonating charge 4.
  • the value of the delay will depend on the speed of the explosives used for the cutting cords and for the detonating charge, as well as the distance between the first relay 21 and the generators of the vector which are cut.
  • the rocket 20 of the chronometric type causes the initiation of the first relay 21 at the end of a time programmed before the firing or controlled on trajectory, the three longitudinal cutting lines are then initiated simultaneously thus than the delay composition 22.
  • Tee fittings of known type and not shown which are integral with the cover 25 will ensure the initiation of the circular cutting cord 24, by one or more of the longitudinal cords 10.
  • the cutting cords 10 at the same time fragment the envelope of the vector and the cylindrical bands 11.
  • the detonation of the charge 4 occurs before the mines have started to move apart from each other under the effect of centrifugal force, and it causes a violent wave of radial direction impact which is exerted on the intermediate surfaces 6 of each of the mines.
  • the perpendicular bisectors of the intermediate surfaces also being the bisectors of the angles formed by the planar faces 9 of each of the mines, the latter are dispersed in a radial direction, and the energy of the shock wave is used optimally.
  • mine ejection speeds were obtained between 3 and 30 meters / second, the mass of each mine being of the order of 2 kilograms.
  • detonating cords are usually used to transmit information between their ends in the form of a detonation wave.
  • compositions of different speed for the cutting cords and for the detonating charge in this case we will play on the value of the delay given by the composition 22.
  • Figure 3 shows in radial section a vector intended to eject cylindrical mines 2 on the trajectory.
  • mines are stacked inside the envelope 3 of the vector and are, as in the previous variant, arranged in a ring around the axis thereof.
  • the envelope thus contains a stack of several groups of mines, each group comprising three mines regularly distributed around the axis of the vector.
  • the holding means as before comprise three longitudinal wedges 13, which in this case are in contact with the external cylindrical surface of the mines, as well as cylindrical bands 11.
  • the confinement means here consist of a case 8, inside which the detonating charge 4 is placed.
  • the case is made of plastic material of the polyethylene type.
  • the mines are maintained by the means for maintaining contact with the case at a cylindrical contact surface 6.
  • the perpendicular bisector of this contact surface which is therefore an arc of a circle is the normal in the middle of this arc and has a radial direction.
  • the three cutting cords 10 are integral with the longitudinal shims as in the previous variant, they are also arranged so as to cut the cylindrical strips 11.
  • each group of containers comprises more than three elements
  • the shape of the case as well as of the holding means will then be adapted accordingly, and the detonating charge will also be chosen as a function of the mass. to disperse and the desired ejection speed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP90401137A 1989-04-27 1990-04-26 Projectile porteur muni d'un dispositif d'éjection pour des sous-munitions Withdrawn EP0395520A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8905585 1989-04-27
FR8905585A FR2646503A1 (fr) 1989-04-27 1989-04-27 Dispositif d'ejection de conteneurs sur trajectoire

Publications (1)

Publication Number Publication Date
EP0395520A1 true EP0395520A1 (fr) 1990-10-31

Family

ID=9381183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90401137A Withdrawn EP0395520A1 (fr) 1989-04-27 1990-04-26 Projectile porteur muni d'un dispositif d'éjection pour des sous-munitions

Country Status (2)

Country Link
EP (1) EP0395520A1 (enrdf_load_stackoverflow)
FR (1) FR2646503A1 (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003006915A1 (en) * 2001-07-11 2003-01-23 Metal Storm Limited Projectile for radially deploying sub-projectiles
RU2237233C1 (ru) * 2002-12-23 2004-09-27 Научно-исследовательский институт специального машиностроения Московского технического университета им. Н.Э. Баумана Кассетный снаряд с осколочно-пучковыми метательными блоками "симаргл"
US6874425B1 (en) 2001-05-18 2005-04-05 Day & Zimmermann, Inc. Projectile carrying sub-munitions
RU2301395C2 (ru) * 2005-08-29 2007-06-20 Государственное унитарное предприятие "Конструкторское бюро приборостроения" Способ поражения цели снарядом и снаряд для его реализации
US7631600B2 (en) 2002-08-16 2009-12-15 Metal Storm Limited Target interception
US11725918B2 (en) * 2017-11-28 2023-08-15 Bae Systems Bofors Ab Device and method for obtaining a horizontal dispersion pattern

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2190827C2 (ru) * 2000-07-28 2002-10-10 Федеральное государственное унитарное предприятие "ГосНИИмаш" Кассетная боевая часть
RU2235965C2 (ru) * 2002-06-24 2004-09-10 Научно-исследовательский институт проблем конверсии и высоких технологий СамГТУ Заряд
RU2227893C1 (ru) * 2002-08-05 2004-04-27 Федеральное государственное унитарное предприятие "ГосНИИмаш" Кассетная боевая часть
RU2293282C1 (ru) * 2005-07-21 2007-02-10 Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт машиностроения" Кассетная боевая часть

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB249765A (en) * 1925-10-29 1926-04-01 Jan Karel Engelbert Triebart Improvements in or relating to anti-aircraft or other shells
US2796021A (en) * 1952-11-17 1957-06-18 Berlin Aaron Samuel Aerial bomb
FR1553052A (enrdf_load_stackoverflow) * 1967-11-28 1969-01-10
US3726223A (en) * 1970-02-16 1973-04-10 Us Navy Adaptive warhead
GB1500275A (en) * 1969-11-06 1978-02-08 Messerschmitt Boelkow Blohm Warhead
DE2854120A1 (de) * 1978-12-15 1980-06-19 Messerschmitt Boelkow Blohm Gasgenerator zum ausstoss von munition aus einem gefechtskopf o.dgl. munitionsbehaeltnis
EP0114602A2 (de) * 1983-01-21 1984-08-01 Rheinmetall GmbH Flugkörper

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB249765A (en) * 1925-10-29 1926-04-01 Jan Karel Engelbert Triebart Improvements in or relating to anti-aircraft or other shells
US2796021A (en) * 1952-11-17 1957-06-18 Berlin Aaron Samuel Aerial bomb
FR1553052A (enrdf_load_stackoverflow) * 1967-11-28 1969-01-10
GB1500275A (en) * 1969-11-06 1978-02-08 Messerschmitt Boelkow Blohm Warhead
US3726223A (en) * 1970-02-16 1973-04-10 Us Navy Adaptive warhead
DE2854120A1 (de) * 1978-12-15 1980-06-19 Messerschmitt Boelkow Blohm Gasgenerator zum ausstoss von munition aus einem gefechtskopf o.dgl. munitionsbehaeltnis
EP0114602A2 (de) * 1983-01-21 1984-08-01 Rheinmetall GmbH Flugkörper

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6874425B1 (en) 2001-05-18 2005-04-05 Day & Zimmermann, Inc. Projectile carrying sub-munitions
WO2003006915A1 (en) * 2001-07-11 2003-01-23 Metal Storm Limited Projectile for radially deploying sub-projectiles
US7631600B2 (en) 2002-08-16 2009-12-15 Metal Storm Limited Target interception
RU2237233C1 (ru) * 2002-12-23 2004-09-27 Научно-исследовательский институт специального машиностроения Московского технического университета им. Н.Э. Баумана Кассетный снаряд с осколочно-пучковыми метательными блоками "симаргл"
RU2301395C2 (ru) * 2005-08-29 2007-06-20 Государственное унитарное предприятие "Конструкторское бюро приборостроения" Способ поражения цели снарядом и снаряд для его реализации
US11725918B2 (en) * 2017-11-28 2023-08-15 Bae Systems Bofors Ab Device and method for obtaining a horizontal dispersion pattern

Also Published As

Publication number Publication date
FR2646503A1 (fr) 1990-11-02
FR2646503B1 (enrdf_load_stackoverflow) 1994-04-22

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