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EP2527781B1 - Verbindungselement für einen Körper aus Verbundmaterial eines militärischen Perforationsprojektils - Google Patents

Verbindungselement für einen Körper aus Verbundmaterial eines militärischen Perforationsprojektils Download PDF

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Publication number
EP2527781B1
EP2527781B1 EP12290162.2A EP12290162A EP2527781B1 EP 2527781 B1 EP2527781 B1 EP 2527781B1 EP 12290162 A EP12290162 A EP 12290162A EP 2527781 B1 EP2527781 B1 EP 2527781B1
Authority
EP
European Patent Office
Prior art keywords
contact
projectile
projectile according
composite material
face
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
EP12290162.2A
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English (en)
French (fr)
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EP2527781A1 (de
Inventor
Michel Blin
Germain Chevalier
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.)
MBDA France SAS
Original Assignee
MBDA France SAS
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 MBDA France SAS filed Critical MBDA France SAS
Publication of EP2527781A1 publication Critical patent/EP2527781A1/de
Application granted granted Critical
Publication of EP2527781B1 publication Critical patent/EP2527781B1/de
Active 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
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/74—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body
    • F42B12/745—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body the core being made of plastics; Compounds or blends of plastics and other materials, e.g. fillers
    • 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
    • F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
    • F42B10/38—Range-increasing arrangements
    • F42B10/42—Streamlined projectiles
    • F42B10/46—Streamlined nose cones; Windshields; Radomes
    • 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
    • F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
    • F42B10/48—Range-reducing, destabilising or braking arrangements, e.g. impact-braking arrangements; Fall-retarding means, e.g. balloons, rockets for braking or fall-retarding
    • F42B10/52—Nose cones
    • 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
    • F42B12/04—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type
    • F42B12/08—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with armour-piercing caps; with armoured cupola
    • 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 present invention relates to a connecting element for connecting an element (preferably a metal nose) of a military piercing projectile to a cylindrical body of composite material of said projectile, and a metallic nose and a projectile provided with such a junction element.
  • an element preferably a metal nose
  • the present invention applies to a military piercing projectile, which can in particular equip a missile, which is provided with a cylindrical body of composite material, filled with an explosive, and a nose which is arranged in front of said body.
  • Such a mixed embodiment which appears very advantageous requires, however, to be completely effective that particular characteristics are present at the junction between the composite material of the body of the projectile and the steel of the nose of said projectile. Indeed, this junction must, first of all, be sufficiently robust to avoid separation of steel parts and composite material during impact. In addition, this junction must also help the composite material to withstand the puncture stresses likely to be encountered. Indeed, especially during the perforation of very thick targets in concrete, the military piercing projectile undergoes very important constraints. It may in particular have to undergo a deceleration of the order of 10000g during an impact.
  • a military projectile comprising a cylindrical body filled with explosive and a metallic nose, which are bound together.
  • the connection zone has an annular abutment and a longitudinal extension allowing lateral contact.
  • the present invention relates to a connecting element for connecting an element (preferably a metal nose) of a military piercing projectile to a body (preferably a cylindrical body) made of composite material of said projectile, whose design makes it possible to remedy to the aforementioned drawbacks and in particular to withstand the constraints indicated above.
  • the body of composite material is preferably, but not exclusively, of cylindrical.
  • the composite material works almost exclusively in axial compression (that is to say in the field where it is the most efficient), while the joining element compensates for radial stresses (due to movement of the explosive inside the projectile), as well as a large part of the bending efforts of the projectile as a whole during an impact on a target with an impact.
  • the composite material thus working substantially under stress where it is most robust, it is possible to optimize its characteristics (thickness, bulk, mass, ...), especially to seek a gain in mass.
  • Such mass gain obtained by virtue of the invention can be replaced by additional or more dense explosive.
  • the performance of the entire piercing military projectile can be improved by using the joining element according to the invention.
  • the longitudinal extension of the junction element provides a large contact surface, which is sufficient to allow bonding between the body of composite material and the connecting element ( made of metal, preferably steel).
  • the connecting element made of metal, preferably steel.
  • said longitudinal rearward extension has a diameter adapted to said cylindrical body so as to be laterally in contact with a radially outer face of the latter.
  • the longitudinal extension of the junction element thus surrounds the front portion of the cylindrical body and is bonded by its radially inner face to the radially outer face of the latter.
  • the contact face of said longitudinal extension intended to come into contact with the cylindrical body is provided with at least one channel forming a housing, preferably of annular shape, which is capable of receiving glue. .
  • This channel is dimensioned so as to receive a sufficient amount of glue to generate a suitable attachment.
  • any possible combination of these different contact surfaces is conceivable. This makes it possible to achieve an advantageous contact between the abutment and the front face of the cylindrical body, in particular for efficiently transmitting to said cylindrical body the forces generating the axial compression.
  • said rearward longitudinal extension has a diameter adapted to said cylindrical body so as to be laterally in contact with a radially inner face of the latter.
  • the longitudinal extension of the connecting element thus enters the front portion of the cylindrical body and is bonded by its radially outer face on the radially inner face of the latter.
  • the junction element further comprises an annular lip connected to the outer edge of the abutment and arranged so as to be able to come laterally into contact with a radially outer face of the front edge of said cylindrical body.
  • This annular lip thus retains the composite material during an impact and to prevent delamination at its end, during a crash against a more rigid structure (the steel of the nose).
  • this lip is arranged longitudinally opposite to said longitudinal extension so as to form, with said abutment and said extension, a housing for the front part of the body. cylindrical material, allowing a triple contact between the connecting element and said front part.
  • said connecting element represents an independent element which is used as an intermediate junction element between the metal nose and the cylindrical body of a projectile.
  • said connecting element advantageously comprises, at its front part, connecting means making it possible to connect it, for example by screwing, to a metal nose of a military piercing projectile.
  • said joining element corresponds to the rear part of a metal nose of a military piercing projectile.
  • the connecting element is therefore an integral part of the metal nose which is intended to be mounted on the cylindrical body of the projectile.
  • the present invention also relates to a military piercing projectile, which can in particular equip a missile, provided in particular with a body (cylindrical) of composite material, which is filled with an explosive or other, and a nose which is arranged in the before said cylindrical body.
  • said projectile is remarkable in that it comprises a joining element such as that mentioned above, which is arranged to connect said nose to said cylindrical body of composite material.
  • the walls, metal and composite, radially successive of said projectile at the junction are such that their stiffness to pressure is increasing, radially outwardly from the axis, so that each they are placed laterally against the outer one.
  • the joining element 1 according to the invention and shown schematically in a first embodiment on the Figures 1 to 5 and in a second embodiment on the Figures 6 to 8 is intended to connect a metal nose 2 of a military piercing projectile 3 to a composite material body 4 of said projectile 3.
  • the body 4 has a preferred cylindrical shape (but which is not not exclusive).
  • this military projectile perforation 3 which can equip a missile, is provided in the usual way, in addition including the cylindrical body 4 and nose 2 which is arranged in front 5 of said cylindrical body 4, a conventional explosive 6 (or another material) which fills the space 7 provided inside said cylindrical body 4 and usual closing means 8 of said internal space 7, provided at the rear 9 of said cylindrical body 4.
  • Said connecting element 1 presents a longitudinal axis 10 which, in the assembled position (represented for example on the figures 2 and 7 ), coincides with the longitudinal axis 11 of the cylindrical body 4 (and therefore of the projectile 3).
  • said connecting element 1 which is made of metal, preferably steel or any other material dense and resilient (with good resistance to impact), improve the mechanical strength of the projectile 3.
  • the composite material of the body 4 works almost exclusively in axial compression (that is to say in the field where it is the most efficient), while the connecting element 1 and the nose 2 compensate the radial stresses (due to the movement of the explosive 6 inside the projectile 3), as well as a large part of the bending forces of the projectile 3 as a whole during an impact on a target 20 with an incidence ⁇ .
  • the composite material thus working substantially under stress where it is most robust, it is possible to optimize its characteristics (thickness, bulk, mass, ...), especially to seek a gain in mass.
  • Such a gain in mass obtained by virtue of the invention can in particular be used for additional or more dense explosive.
  • the performance of the military piercing projectile 3 as a whole can be improved by using the joining element 1 according to the invention.
  • the longitudinal extension 15, 25 of the connecting element 1 provides a contact surface 16, 26 of large surface area, which is sufficient to allow bonding between the body 4 composite material and the joining element 1 (made of metal, preferably steel).
  • the composite material as for example for a screw fastener
  • the fibers composing the composite material are therefore not damaged or cut.
  • the mechanical properties of the composite material are therefore not deteriorated by the fastening.
  • the adhesive used can be chosen according to the environmental conditions of use of the projectile 3, which improves the fixing.
  • said longitudinal extension 15 towards the rear has an internal diameter adapted (that is to say very slightly greater) to the outer diameter of the cylindrical body 4 so as to receive the front part of the latter, while coming laterally to the contact (via the contact face 16) of a radially outer face 17 of the latter, as shown in FIG. figure 2 which shows in an enlarged way a part P1 of the figure 1 .
  • the longitudinal extension 1 5 of the joining element 1 thus surrounds in the front portion 5 of the cylindrical body 4 and is bonded by its radially inner face 16 to the radially outer face 17 of the latter.
  • This face 16 may be longitudinal ( Figures 1 to 3 and 5 ) or slightly conical ( figure 4 ).
  • said contact face 16 of said longitudinal extension 15 intended to come into contact with the cylindrical body 4 is provided with at least one channel 21 forming a housing, preferably of annular shape, which is capable of receive glue.
  • This channel 21 represented in particular on Figures 1 and 2 is dimensioned so that it can receive a sufficient quantity of glue to generate an appropriate fixation.
  • any possible combination of these different contact surfaces 13A, 13B, and 16 is conceivable.
  • the introduction of successive walls is carried out gradually using conical parts.
  • the longitudinal extension 25 towards the rear of the joining element 1 has a suitable external diameter (that is to say very slightly smaller) than the internal diameter of the cylindrical body 4 so as to be able to be inserted in the latter while coming laterally into contact (via an external contact face 26) with a radially inner face 27 of the latter, as shown in FIG. figure 7 which shows in an enlarged way a P2 part of the figure 6 .
  • the longitudinal extension 25 of the connecting element 1 thus enters the front portion 5 of the cylindrical body 4 and is bonded by its radially outer face 26 on the radially inner face 27 of the latter.
  • the longitudinal extension 25 further comprises an annular lip 22 connected to the outer edge of the abutment 23 and arranged so as to come laterally in contact with a radially outer face 28 of the front side 5 of the cylindrical body 4.
  • This annular lip 22 has a length which is of the same order of magnitude as the 4 composite body thickness. This annular lip 22 thus makes it possible to retain the composite material during an impact and to prevent delamination at its end 5, due to a crushing against a more rigid structure (the steel of the nose).
  • the lip 22 is arranged longitudinally opposite said longitudinal extension 25 so as to form with said abutment 23 and said extension 25 a housing 29 for the front portion 5 of the body 4 of composite material, allowing a triple contact between the element of junction 1 and said front part 5.
  • said lip 22 has a tapered shape tapered rearwardly, as shown in particular on the figure 7 .
  • said joining element 1 represents an independent element which is used as an intermediate element for joining a nose 2 and a cylindrical body 4 of a projectile 3.
  • said connecting element 1 comprises, at its front portion, conventional connecting means for connecting it, for example by screwing, to a metal nose of a military piercing projectile.
  • Such a metal / metal connection is easy to perform and has good mechanical strength.
  • the connecting element according to this first embodiment has, in particular, the advantage of being easily manufactured.
  • said joining element 1 corresponds to the rear part of a metal nose 2 of a military piercing projectile. 3, as shown in the figures (even if nose 2 is only partially shown).
  • the joining element 1 is therefore an integral part of the metal nose 2 which is intended to be mounted directly on the cylindrical body 4 of the projectile 3. By this integration, no connecting means is therefore necessary. between the nose 2 and the connecting element 1.
  • said composite material of the cylindrical body 4 comprises unbalanced fiber weaves, that is to say with a proportion of axial fibers different (and greater) than the proportion of radial fibers. This in particular makes it possible to increase the resistance of the cylindrical body 4 to axial compression, which represents the most important stress that the latter must bear, as indicated above.
  • the radially successive walls, metal and composite, of said projectile 3 at the junction are such that their pressure stiffnesses are increasing, radially outwardly from the axis 11, so that each of them is laid laterally against the one outside it.
  • the connecting element 1 is intended to connect a metal nose 2 to a body 4 of composite material on a projectile.
  • the connecting element can also be used to connect another element, in particular rear closure means such as the aforementioned means 8, to the body of composite material.
  • the forces are less important at the rear than at the front of the projectile 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Vibration Dampers (AREA)
  • Earth Drilling (AREA)
  • Laminated Bodies (AREA)

Claims (12)

  1. Militärisches Perforationsprojektil, das mindestens mit einem Körper (4) und einer metallischen Nase (2), die vorne am Körper (4) angeordnet ist, sowie mit einem Verbindungselement (1) versehen ist, das derart angeordnet ist, dass es die metallische Nase des militärischen Perforationsprojektils (3) mit dem Körper (4) verbindet, wobei das Verbindungselement (1) eine Längsachse (10) aufweist, wobei der Teil (12) des Verbindungselements (1), der dazu bestimmt ist, mit dem Körper (4) verbunden zu werden, mindestens umfasst:
    - einen ringförmigen Anschlag (13, 23), der in Bezug zur Längsachse (10) zentriert und dazu bestimmt ist, mit einem Rand (14, 24) des Körpers (4) in Kontakt zu kommen; und
    - eine Längsverlängerung (15, 25), die vom Anschlag (13, 23) aus definiert ist und eine Kontaktfläche (16, 26) umfasst, und die eine Form und einen Durchmesser aufweist, die an den Körper (4) angepasst sind, damit sie mit ihrer Kontaktfläche (16, 26) seitlich mit einer Umfangsfläche (17, 27) dieses letztgenannten in Kontakt kommt,
    dadurch gekennzeichnet, dass der Körper (4) aus einem Verbundwerkstoff ist, und dass die radial aufeinanderfolgenden Wände des Projektils (3) im Bereich der Verbindung derart sind, dass ihre jeweilige Drucksteifigkeit radial nach außen ansteigend ist.
  2. Projektil nach Anspruch 1,
    dadurch gekennzeichnet, dass die Längsverlängerung (15) einen an den Körper (4) angepassten Durchmesser aufweist, um seitlich mit einer radial äußeren Fläche (17) dieses letztgenannten in Kontakt zu kommen.
  3. Projektil nach Anspruch 2,
    dadurch gekennzeichnet, dass die Kontaktfläche (16) der Längsverlängerung (15), die dazu bestimmt ist, mit dem Körper (4) in Kontakt zu kommen, mit mindestens einer Rinne (21) versehen ist, die eine Lagerung bildet, die Klebstoff aufnehmen kann.
  4. Projektil nach einem der Ansprüche 2 und 3,
    dadurch gekennzeichnet, dass der Anschlag (13) mindestens eine Kontaktfläche (13A, 13B) in eine allgemeine radiale Richtung aufweist.
  5. Projektil nach Anspruch 4,
    dadurch gekennzeichnet, dass der Anschlag (13) eine Vielzahl von Kontaktflächen (13A, 13B) aufweist, die in Radialrichtung aufeinander folgen.
  6. Projektil nach einem der Ansprüche 4 und 5,
    dadurch gekennzeichnet, dass mindestens eine Kontaktfläche (13A) in einer Ebene angeordnet ist, die zur Längsachse (10) radial ist.
  7. Projektil nach einem der Ansprüche 4 bis 6,
    dadurch gekennzeichnet, dass mindestens eine Kontaktfläche (13B) eine konische Form aufweist, die sich nach hinten nach außen erstreckt.
  8. Projektil nach Anspruch 1,
    dadurch gekennzeichnet, dass die Längsverlängerung (25) einen an den Körper (4) angepassten Durchmesser aufweist, um seitlich mit einer radial inneren Fläche (27) dieses letztgenannten in Kontakt kommen zu können.
  9. Projektil nach Anspruch 8, dadurch gekennzeichnet, dass es ferner eine ringförmige Lippe (22) umfasst, die mit dem äußeren Rand des Anschlags (23) verbunden und längs gegenüber der Längsverlängerung (25) angeordnet ist, um seitlich mit einer radial äußeren Fläche (28) des Körpers (4) in Kontakt kommen zu können.
  10. Projektil nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass das Verbindungselement (1) derart angeordnet ist, dass es die metallische Nase (2) mit dem Körper (4) aus Verbundwerkstoff verbindet.
  11. Projektil nach Anspruch 10,
    dadurch gekennzeichnet, dass das Verbindungselement im Bereich seines vorderen Teils Verbindungsmittel umfasst, die es ermöglichen, es mit der metallischen Nase zu verbinden.
  12. Projektil nach Anspruch 10,
    dadurch gekennzeichnet, dass der hintere Teil der metallischen Nase (2) das Verbindungselement (1) umfasst.
EP12290162.2A 2011-05-24 2012-05-15 Verbindungselement für einen Körper aus Verbundmaterial eines militärischen Perforationsprojektils Active EP2527781B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1101605A FR2975770B1 (fr) 2011-05-24 2011-05-24 Element de jonction pour un corps en materiau composite d'un projectile militaire de perforation

Publications (2)

Publication Number Publication Date
EP2527781A1 EP2527781A1 (de) 2012-11-28
EP2527781B1 true EP2527781B1 (de) 2014-02-19

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Application Number Title Priority Date Filing Date
EP12290162.2A Active EP2527781B1 (de) 2011-05-24 2012-05-15 Verbindungselement für einen Körper aus Verbundmaterial eines militärischen Perforationsprojektils

Country Status (9)

Country Link
US (1) US9347752B2 (de)
EP (1) EP2527781B1 (de)
AU (1) AU2012260708B2 (de)
BR (1) BR112013029928B1 (de)
ES (1) ES2452544T3 (de)
FR (1) FR2975770B1 (de)
IL (1) IL229279A (de)
WO (1) WO2012160271A1 (de)
ZA (1) ZA201308986B (de)

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US10036619B2 (en) * 2016-01-11 2018-07-31 Lehigh Defense, LLC Armor-piercing cavitation projectile
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WO2017172640A2 (en) 2016-03-25 2017-10-05 Vista Outdoor Operations Llc Reduced energy msr system
IT201800003525A1 (it) * 2018-03-14 2019-09-14 Imz S R L Elemento balistico

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Also Published As

Publication number Publication date
FR2975770A1 (fr) 2012-11-30
BR112013029928B1 (pt) 2020-06-02
AU2012260708B2 (en) 2016-08-25
US9347752B2 (en) 2016-05-24
AU2012260708A1 (en) 2013-11-14
FR2975770B1 (fr) 2018-06-29
US20140150682A1 (en) 2014-06-05
WO2012160271A1 (fr) 2012-11-29
ZA201308986B (en) 2015-02-25
IL229279A0 (en) 2014-01-30
IL229279A (en) 2016-11-30
EP2527781A1 (de) 2012-11-28
BR112013029928A2 (pt) 2018-06-19
ES2452544T3 (es) 2014-04-01

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