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EP2578987B1 - Drallstabilisiertes Geschoss - Google Patents

Drallstabilisiertes Geschoss Download PDF

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Publication number
EP2578987B1
EP2578987B1 EP12186739.4A EP12186739A EP2578987B1 EP 2578987 B1 EP2578987 B1 EP 2578987B1 EP 12186739 A EP12186739 A EP 12186739A EP 2578987 B1 EP2578987 B1 EP 2578987B1
Authority
EP
European Patent Office
Prior art keywords
projectile
piston
cup
warhead
projectiles
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
EP12186739.4A
Other languages
English (en)
French (fr)
Other versions
EP2578987A1 (de
Inventor
M. Rémi Boulanger
M. Sylvain Jayet
M. Frédéric Nozeres
M. Jérôme Simoneau
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 EP2578987A1 publication Critical patent/EP2578987A1/de
Application granted granted Critical
Publication of EP2578987B1 publication Critical patent/EP2578987B1/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
    • 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
    • F42B12/62—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles the submissiles being ejected parallel to the longitudinal axis of the projectile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F42B10/26—Stabilising arrangements using spin

Definitions

  • the technical field of the invention is that of projectiles of medium caliber projecting axially and trajectory of the sub-projectiles.
  • projectiles carry a set of inert sub-projectiles such as tungsten alloy balls or steel cylinders, or even metal darts.
  • These axial projection projectiles are used primarily for the purpose of structural destruction of other projectiles such as missiles.
  • the sub-projectiles are expelled from the projectile, on trajectory, at a determined distance after firing.
  • the sub-projectiles continue their trajectory by deviating radially from each other, thus forming a dense and homogeneous cloud of sub-projectiles. This cloud propagates in a conical volume and forms an obstacle on the trajectory of a missile (for example) which is struck by it, causing its destruction.
  • the patent application US2007 / 0034073 describes a military head that can be incorporated into a projectile, a missile, a rocket, or a vehicle.
  • a cartridge is housed in a firing tube that is scratched to rotate the cartridge.
  • the use of such a solution for rotating the cartridge is unnecessary.
  • this solution is not directly transferable to a projectile of medium caliber of smaller dimensions and which comprises a ballistic ogive closing a housing internal to the projectile.
  • the patent US4706568 describes a munition dispersing light markers. Such ammunition does not have the firing limitations of a medium caliber projectile gyro.
  • This patent describes markers carried by stacked buckets formed of shells and separated by partitions. The set of buckets is placed in a carrying projectile. The partition of the last bucket is supported on an ejector piston. This document does not give a solution allowing a rotation of the contents of the buckets in a manner integral with the body of the projectile.
  • the sub-projectiles are housed in several one-piece and split buckets stacked one on top of the other from the rear of the shell body into the warhead and rotatably connected to each other by disks with indentations.
  • the buckets have a variable diameter depending on whether they are placed in the shell body or in the warhead.
  • a rear piston is connected to the shell body by a rear groove engaged on a tooth integral with the shell body.
  • the invention aims to simplify and make reliable the opening of such a subproject disperser projectile.
  • Another advantage of the invention is to ensure reliable rotational drive of all components of the gyro-stabilized projectile.
  • the subject of the invention is a gyro-stabilized medium-caliber projectile comprising a hollow body carrying a payload formed of a set of inert and dispersible sub-projectiles on a trajectory, solid body in its rear part of a base housing a load.
  • pyrotechnic device which is separated from the sub-projectiles by a piston capable of translating relative to the projectile body to axially push the sub-projectiles out of the projectile body, characterized in that the body encloses a substantially cylindrical single cup corresponding with an internal cylindrical bore to the body, bucket formed of the assembly of at least two sectors independent of each other and contiguous along their edges parallel to the longitudinal axis of the projectile, bucket integral in rotation with the body and comprising means for driving in rotation the sub-projectiles, the bucket having at its rear end a piston closing it and ensuring the securing e n rotation of the bucket and the body via a prismatic portion of the piston, the front end of the bucket being closed by an integral ogive of the front part of the projectile body, the pyrotechnic charge placed behind the piston being dimensioned to provide a push on the piston that pushes the bucket and causes the separation of the warhead and the body.
  • the means for rotating the sub-projectiles comprises a prismatic section formed by the inside of the walls of the bucket.
  • the piston is rotated by the body by means of drive elements which are regularly distributed over the periphery of the piston and comprise at least one key oriented parallel to the axis of the projectile, the keyway being open at less at a rear face of the piston.
  • each sector of the bucket comprises at least one tooth per sector penetrating into a corresponding housing of the warhead and thus avoiding kinking of the sectors of the bucket.
  • the translational fastening of the ogive and the projectile body is done by clipping the ogive on the projectile body.
  • the rotational connection of the warhead and the projectile body can then be made by at least a first flat on the projectile body, first flat corresponding with at least a second flat of the ogive.
  • a projectile 1 of medium caliber comprises in its front part AV a warhead 2 integral with a projectile body 3, itself secured to a base 4 in the rear rear part of the projectile 1.
  • the base 4 carries a belt 15 surrounding the projectile.
  • the projectile body 3 comprises a substantially cylindrical cup 5 corresponding with an internal cylindrical bore of the projectile body 3.
  • the bucket 5 contains a set of inert sub-projectiles 6 which are constituted here by tungsten balls 6 (bead diameter of between 4 mm and 6 mm). mm).
  • the bucket 5 is closed at each of its ends. The rear end is closed by a piston 7 while the front end is closed by a bearing on the ogive 2 of the bucket 5 and the sub-projectiles 6 it contains.
  • the bucket 5 is a single piece extending axially from the piston 7 to the nose 5 and is formed of the assembly of at least two sectors 8 which form walls 8a now radially in place the balls 6. There is here six sectors 8 regularly distributed angularly around the axis 12 of the projectile.
  • the piston 7 comprises keys 10 each corresponding with a housing 11 arranged partly in the piston 7 and partly in the body 3. Keys 10 and housing 11 are evenly distributed around the piston 7. The keys 10 constitute driving elements in rotation of the piston 7 by the body 3.
  • Each housing 11 is formed at the junction between the inside of the projectile body 3 and the circumference of the piston 7 and opens towards the rear of the piston 7.
  • Each key 10 is oriented longitudinally so as to be substantially parallel to the longitudinal axis 12, which is the axis of rotation for the gyrostabilization of the projectile 1.
  • the piston 7 is integral in rotation with the body 3 of the projectile but remains free in translation along the longitudinal axis 12 of the projectile.
  • the base 4 comprises a pyrotechnic charge 21 placed behind the piston 7. This charge can be activated via a programmable ignition device 22 placed in the rear portion of the base 4.
  • the projectile 1 is partially represented, the sub-projectiles 6, the projectile body 3 and the ogive 2 being absent from the figure.
  • the sectors 8 of the bucket 5, also partially shown, are independent of one another and joined along their edges parallel to the longitudinal axis 12 of the projectile 1. These sectors 8 comprise a substantially planar inner face 8a forming a wall while their outer face has a curvature such that, together to form the bucket 5, the sectors form a cylinder.
  • This cylinder has a corresponding diameter with the internal bore of the projectile body 3 visible to the figure 1 . It can slide axially without difficulty in the projectile body 3.
  • the internal sectors 8 of the bucket 5 provide it with a hexagonal prismatic section 13.
  • the bucket 5 contains the balls 6, the hexagon shape 13 permits the rotation of the sub-projectiles 6 by the bucket 5.
  • the piston 7 has a prismatic portion 7a which is hexagonal in section and which corresponds with the internal hexagonal section 13 of the bucket 5. Note that each of the sectors 8 forming the bucket 5 has at its front end a tooth 14. As described below and visible to the figure 3 each tooth 14 corresponds with a housing 16 made in the nose 2 of the projectile 1.
  • the piston 7 is driven by the projectile body 3.
  • the hexagonal portion 7a of the piston 7 simultaneously drives the bucket 5 via the corresponding hexagonal shape 13 of the inner section of the bucket 5.
  • the front end of the projectile body 3 has a groove 17 intended to correspond with a bead 18 of the ogive 2 to secure ogive 2 and body 3 by clipping.
  • a groove 17 intended to correspond with a bead 18 of the ogive 2 to secure ogive 2 and body 3 by clipping.
  • flats 19 and 20 are flats 19 and 20 for cooperating with each other to rotate the ogive 2.
  • the projectile 1 comprises in its warhead 2 a series of housings 16 placed on the rear face 2a thereof. These housings 16 of the nose 2 are intended to receive the teeth 14 of each of the sectors 8 of the bucket 5. The teeth 14 avoid kinking sectors 8 of the bucket 5 during the acceleration in rotation of the projectile. Each sector therefore remains oriented parallel to the axis 12 of the projectile.
  • the front end of the bucket 5 thus pushes the warhead 2 which is then unclipped from the projectile body 1.
  • the walls 8a of the sectors 8 of the bucket 5 and the piston 7 and the balls 6 are projected outside the body 3 projectile towards the front of the projectile 1.
  • the bucket 5 opens homogeneously by quickly releasing the sectors 8 which are projected away from the zone of expansion of the balls 6.
  • the thrust energy provided by the pyrotechnic charge makes it possible to disperse a dense cloud of balls 6 at a speed greater than the longitudinal velocity of the projectile 1 and according to an apex angle cone ⁇ .
  • the payload contained in the bucket may be composed of columns parallel to each other and each formed of the stack of tungsten cylinders.
  • the bucket 5 may comprise only two sectors 8, the driving of the sub-projectile is always done through a prismatic shape made in the bucket.

Landscapes

  • 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)
  • Toys (AREA)

Claims (6)

  1. Drallstabilisiertes Geschoss (1) mittleren Kalibers mit einem hohlen Körper (3), der eine Nutzlast befördert, die aus einem Satz von Tochtergeschossen gebildet (6) ist, die träg und auf der Flugbahn dispergierbar sind, wobei der Körper (3) in seinem hinteren Teil mit einem Sockel (4) verbunden ist, der eine pyrotechnische Ladung (21) abschirmt, die von den Tochtergeschossen (6) durch einen Kolben (7) getrennt ist, der sich im Verhältnis zum Körper (3) des Geschosses verschieben kann, um die Tochtergeschosse (6) axial aus dem Körper zu schieben, wobei das Geschoss (1) dadurch gekennzeichnet ist, dass der Körper (3) eine einzige im wesentlichen zylindrische Schale (5) enthält, die mit einer zylindrischen Bohrung im Körper entspricht, wobei die Schale (5) aus dem Zusammenbau von mindestens zwei Sektoren (8) gebildet ist, die unabhängig voneinander und gemäß ihren Rändern, die parallel sind, zur Längsachse des Geschosses (1) aneinandergesetzt sind, wobei die Schale (5) fest in Drehung mit dem Körper (3) ist und ein Mittel (13) umfasst, das die Tochtergeschosse in Drehung antreibt, wobei die Schale (5) an seinem Hinterende einen Kolben (7) umfasst, der sie verschließt und die rotierende feste Verbindung der Schale (5) und des Körpers (3) mittels eines Prismaabschnitts (7a) des Kolbens (7) sichert, wobei das Vorderende der Schale (5) von einem Sprengkopf (2) verschlossen ist, der mit dem Vorderteil des Geschosskörpers verbunden ist, wobei die pyrotechnische Ladung (21) hinter dem Kolben (7) platziert und so dimensioniert ist, dass sie dem Kolben (7) einen Schub erteilt, der die Schale (5) schiebt und die Entkopplung des Sprengkopfs (2) und des Körpers (3) bewirkt.
  2. Drallstabilisiertes Geschoss (1) nach Anspruch 1, gekennzeichnet dadurch, dass das Rotationsmittel (13) für die Tochtergeschosse (6) einen Prismaabschnitt (13) umfasst, der durch das Innere der Wände (8a) der Schale (5) gebildet wird.
  3. Drallstabilisiertes Geschoss (1) nach einem der Ansprüche 1 oder 2, gekennzeichnet dadurch, dass der Kolben (7) durch den Körper (3) mittels Antriebselemente (10) in Rotation versetzt wird, die regelmäßig auf dem Umfang des Kolbens (7) verteilt sind und mindestens einen Keil (10) umfassen, der parallel zur Achse des Geschosses (1) orientiert ist, wobei die Aufnahme (11) für den Keil mindestens auf Höhe einer Rückseite des Kolbens (7) mündet.
  4. Drallstabilisiertes Geschoss (1) nach einem der Ansprüche 1 bis 3, gekennzeichnet dadurch, dass jeder Abschnitt (8) der Schale (5) mindestens einen Zahn (14) pro Abschnitt (8) umfasst, der in eine entsprechende Aufnahme (16) des Sprengkopfs (2) eindringt und so den Drall der Abschnitte (8) der Schale (5) vermeidet.
  5. Drallstabilisiertes Geschoss (1) nach Anspruch 4, gekennzeichnet dadurch, dass die verschiebbare feste Verbindung des Sprengkopfs (2) und des Körpers (3) des Geschosses durch Clipsen des Sprengkopfs (2) auf den Geschosskörper (3) erfolgt.
  6. Drallstabilisiertes Geschoss (1) nach Anspruch 5, gekennzeichnet dadurch, dass die rotierende feste Verbindung des Sprengkopfs (2) und des Körpers (3) des Geschosses durch mindestens eine erste Fläche (20) auf dem Körper (3) des Geschosses erfolgt, wobei die erste Fläche (20) mindestens einer zweiten Fläche (19) des Sprengkopfs entspricht.
EP12186739.4A 2011-10-03 2012-09-28 Drallstabilisiertes Geschoss Active EP2578987B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1103013A FR2980843B1 (fr) 2011-10-03 2011-10-03 Projectile gyrostabilise

Publications (2)

Publication Number Publication Date
EP2578987A1 EP2578987A1 (de) 2013-04-10
EP2578987B1 true EP2578987B1 (de) 2016-09-14

Family

ID=46881023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12186739.4A Active EP2578987B1 (de) 2011-10-03 2012-09-28 Drallstabilisiertes Geschoss

Country Status (3)

Country Link
EP (1) EP2578987B1 (de)
ES (1) ES2602153T3 (de)
FR (1) FR2980843B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2998659B1 (fr) * 2012-11-23 2017-06-23 Nexter Munitions Projectile gyrostabilise projetant une charge utile
FR3100610B1 (fr) 2019-09-06 2023-11-03 Cta Int Obus anti-aérien pour munition télescopée à double déverrouillage
FR3116894B1 (fr) 2020-12-02 2022-10-28 Nexter Munitions Projectile gyrostabilisé

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954060A (en) * 1967-08-24 1976-05-04 The United States Of America As Represented By The Secretary Of The Army Projectile
US4706568A (en) * 1986-06-09 1987-11-17 The United States Of America As Represented By The Secretary Of The Navy Chemiluminescent marking warhead
DE3706032A1 (de) * 1987-02-25 1988-09-08 Diehl Gmbh & Co Geschoss mit zwei submunitionskoerpern
US7752976B2 (en) * 2005-05-27 2010-07-13 Lockheed Martin Corporation Warhead and method of using same
FR2937123B1 (fr) * 2008-10-13 2016-09-16 Nexter Munitions Munition de controle des foules a effet non letal

Also Published As

Publication number Publication date
EP2578987A1 (de) 2013-04-10
FR2980843A1 (fr) 2013-04-05
FR2980843B1 (fr) 2014-06-13
ES2602153T3 (es) 2017-02-17

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