EP2527781B1 - Joining element for a body made of a composite material of a military penetrating projectile - Google Patents

Description

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.

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.

It is known that in order to improve the ratio between the explosive mass and the total mass of such a perforating military projectile, it is increasingly sought to replace the usual steel of the projectile structure with much lighter composite materials. , especially at the cylindrical body. However, the use of steel remains necessary, especially at the front of the projectile, to ensure resistance to scratches during an impact on a target, in particular a concrete target. In addition, the use of steel makes it possible to implement easy machining of the nose of the projectile.

Such a mixed embodiment (steel / composite material) 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.

• une compression axiale due au choc sur la cible ;
• une flexion du corps, en présence d'un angle d'impact ; et
• un mouvement de l'explosif à l'intérieur du corps, qui exerce une force radiale sur le corps du projectile.

More particularly, when a piercing military projectile arrives on a target with a non-zero impact angle, three main phenomena contribute to the appearance of stresses in the body of the projectile:

• axial compression due to impact on the target;
• bending of the body, in the presence of an angle of impact; and
• a movement of the explosive inside the body, which exerts a radial force on the body of the projectile.

Furthermore, it is known from the patent US-5,567,908 , 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.

• une butée de forme annulaire, centrée par rapport à son axe longitudinal, qui est destinée à venir au contact du bord avant dudit corps (de préférence cylindrique) ; et
• un prolongement longitudinal vers l'arrière, qui est défini à partir de ladite butée, qui comprend une face de contact, et qui présente une forme et un diamètre adaptés audit corps de manière à pouvoir venir, avec sa face de contact, latéralement au contact d'une surface périphérique de ce dernier.

For this purpose, said connecting element is remarkable, according to the invention, in that its rear part, intended to be connected to said body of composite material, comprises at least:

• an annular stop, centered with respect to its longitudinal axis, which is intended to come into contact with the front edge of said body (preferably cylindrical); and
• a longitudinal rearward extension, which is defined from said abutment, which comprises a contact face, and which has a shape and a diameter adapted to said body so as to come, with its contact face, laterally in contact with a peripheral surface thereof.

In the context of the present invention, the body of composite material is preferably, but not exclusively, of cylindrical. In the following description, reference is generally made (in a nonlimiting manner) to said preferred embodiment of cylindrical shape.

• le contact ou appui latéral important obtenu par le prolongement longitudinal sur une surface périphérique (interne ou externe) du corps permet de supporter les effets hydrodynamiques de l'explosif, ainsi que les efforts de flexion lors d'une perforation ; et
• la butée (en combinaison avec le prolongement longitudinal) permet de transmettre la compression axiale (due au choc sur la cible) audit corps qui est en mesure de supporter une telle compression.

Thus, by virtue of the aforementioned characteristics of said connecting element which is made of metal, preferably of steel or of any other dense and resilient material (having good resistance to impact), the mechanical strength of the projectile is improved. Indeed :

• the significant lateral contact or support obtained by the longitudinal extension on a peripheral (internal or external) surface of the body makes it possible to withstand the hydrodynamic effects of the explosive, as well as the bending forces during a perforation; and
• the abutment (in combination with the longitudinal extension) makes it possible to transmit the axial compression (due to the shock on the target) to the body which is able to support such compression.

Thus, thanks to the invention, 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. Thus, the performance of the entire piercing military projectile can be improved by using the joining element according to the invention.

In addition to its participation in the mechanical strength of the body of the projectile, 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). By using a bonding for the joining of these parts, it is not necessary to perform machining or drilling at the composite material such as for example a screw fastener. The fibers composing the composite material (and ensuring most of the mechanical strength of the composite material) are not damaged or cut. The mechanical properties of the composite material are therefore not deteriorated by the fixing. In addition, the glue used can be chosen according to the environmental conditions of use of the projectile, which improves the attachment.

In a first embodiment, 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. In this embodiment, 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.

In a particular variant embodiment, 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.

• soit être située dans un plan qui est radial par rapport audit axe longitudinal ;
• soit présenter une forme conique qui, vers l'arrière, s'étend vers l'extérieur.

In this first embodiment, said stop has at least one contact surface, and preferably a plurality of contact surfaces which succeed in the radial direction (directly or via a side contact face). In the context of the invention, such a contact surface can:

• be located in a plane that is radial to said longitudinal axis;
• or have a conical shape that, towards the rear, extends outwards.

In the context of the present invention, 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.

Furthermore, in a second embodiment, 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. In this embodiment, 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.

Preferably, in this second embodiment, 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). Advantageously, 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.

Furthermore, in a first variant embodiment, 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. To do this, 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.

In addition, in a second variant embodiment, said joining element corresponds to the rear part of a metal nose of a military piercing projectile. In this variant embodiment, 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.

• il est adapté à tout type de matériau composite ; et
• il permet une utilisation optimisée du matériau composite (en travaillant essentiellement en tenue axiale) et il rend plus simple la fabrication du corps en matériau composite. En effet, la partie en matériau composite peut être réalisée à partir d'une géométrie simplifiée, par exemple sous forme d'un tube (cylindre).

The joining element according to the invention, which thus contributes to the maintenance of the composite material and which plays a preponderant role in the mechanical resistance to impact of the entire projectile, also has the following advantages:

• it is suitable for any type of composite material; and
• it allows optimized use of the composite material (working essentially in axial resistance) and makes it easier to manufacture the composite material body. Indeed, the composite material part can be made from a simplified geometry, for example in the form of a tube (cylinder).

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.

According to the invention, 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.

In a particular embodiment, 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.

• Les figures du dessin annexé feront bien comprendre comment l'invention peut être réalisée. Sur ces figures, des références identiques désignent des éléments semblables.
• La figure 1 est une vue schématique d'un projectile militaire de perforation muni d'un élément de jonction conforme à un premier mode de réalisation de l'invention.
• La figure 2 est une vue agrandie d'une partie de la figure 1, illustrant la jonction.
• La figure 3 est une vue en perspective d'un élément de jonction conforme au premier mode de réalisation de l'invention.
• Les figures 4 et 5 sont des vues semblables à celle de la figure 2, qui illustrent respectivement des variantes de réalisation différentes des surfaces de contact.
• Les figures 6 à 8 sont des vues semblables respectivement à celles des figures 1 à 3 d'un projectile militaire de perforation muni d'un élément de jonction, conformément à un second mode de réalisation de l'invention.

In the preceding description, which relates to the preferred embodiment of the invention, the connecting element is intended to connect a metal nose to a body of composite material on a projectile. However, in the context of the present invention, the connecting element can also be used to connect another element, for example rear closure means, to the body of composite material.

• The figures of the appended drawing will make it clear how the invention can be realized. In these figures, identical references designate similar elements.
• The figure 1 is a schematic view of a military piercing projectile provided with a connecting element according to a first embodiment of the invention.
• The figure 2 is an enlarged view of some of the figure 1 , illustrating the junction.
• The figure 3 is a perspective view of a joining element according to the first embodiment of the invention.
• The Figures 4 and 5 are views similar to that of the figure 2 , which respectively illustrate different embodiments of the contact surfaces.
• The Figures 6 to 8 are views similar to those of the Figures 1 to 3 a piercing military projectile equipped with a joining element according to a second embodiment of the invention.

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. In the description below, the body 4 has a preferred cylindrical shape (but which is not not exclusive). As shown schematically on figures 1 and 6 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).

• une butée 13, 23 de forme annulaire, qui est centrée par rapport à l'axe longitudinal 10, et qui est destinée à venir au contact du bord avant 14, 24 dudit corps cylindrique 4. On entend par forme annulaire une courbe fermée, de préférence circulaire, mais non exclusivement ; et
• un prolongement longitudinal 15, 25 qui est prolongé vers l'arrière de l'élément de jonction 1, qui est défini à partir de ladite butée 13, 23 qui comprend une face de contact 16, 26 et qui présente une forme cylindrique, ainsi qu'un diamètre adapté au diamètre dudit corps cylindrique 4 de manière à pouvoir venir, avec sa face de contact 16, 26 latéralement au contact d'une surface périphérique 17, 27 de ce dernier. De préférence, ce prolongement longitudinal 15, 25 présente une longueur qui dépend du niveau de pression exercé par l'explosif et du niveau de flexion attendu à l'impact.

According to the invention, the rear portion 12 of said connecting element 1, intended to be bonded to the front 5 of said cylindrical body 4 of composite material, comprises at least:

• an annular abutment 13, 23, which is centered with respect to the longitudinal axis 10, and which is intended to come into contact with the front edge 14, 24 of said cylindrical body 4. The term "annular shape" means a closed curve, of preferably circular, but not exclusively; and
• a longitudinal extension 15, 25 which is extended towards the rear of the joining element 1, which is defined from said stop 13, 23 which comprises a contact face 16, 26 and which has a shape cylindrical, and a diameter adapted to the diameter of said cylindrical body 4 so as to come, with its contact face 16, 26 laterally in contact with a peripheral surface 17, 27 of the latter. Preferably, this longitudinal extension 15, 25 has a length that depends on the level of pressure exerted by the explosive and the level of bending expected at impact.

In the following description, the notions "front" and "rear" of a room are defined with respect to the front and rear position on the projectile 3 during a forward movement (illustrated by an arrow V on the figures 1 and 6 ) of the last.

• le contact ou appui latéral important obtenu par le prolongement longitudinal 15, 25 (via sa face de contact 16, 26) sur une surface périphérique 17, 27 du corps cylindrique 4 permet notamment de supporter les effets hydrodynamiques de l'explosif 6, ainsi que les efforts de flexion lors d'une perforation. En effet, les contraintes radiales (dues au mouvement de l'explosif 6 à l'intérieur du projectile 3), ainsi qu'une grande partie des efforts de flexion du projectile 3 dans son ensemble lors d'un impact (figure 1) sur une cible 20 avec une incidence α (par rapport à une normale 21 au plan de la cible 20) sont supportés par l'élément de jonction 1 et le nez 2 ; et
• la butée 13, 23 (en combinaison avec le maintien engendré par le prolongement longitudinal 15, 25) permet de transmettre la compression axiale due au choc sur la cible 20, audit corps cylindrique 4 qui, de par ses caractéristiques propres, est en mesure de supporter une telle compression.

So :

• the contact or significant lateral support obtained by the longitudinal extension 15, 25 (via its contact face 16, 26) on a peripheral surface 17, 27 of the cylindrical body 4 allows in particular to withstand the hydrodynamic effects of the explosive 6, as well as the bending forces during a perforation. Indeed, 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 ( figure 1 ) on a target 20 with an incidence α (relative to a normal 21 at the plane of the target 20) are supported by the joining element 1 and the nose 2; and
• the stop 13, 23 (in combination with the maintenance generated by the longitudinal extension 15, 25) makes it possible to transmit the axial compression due to impact on the target 20, to said cylindrical body 4 which, by its own characteristics, is able to withstand such compression.

The preceding features of 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.

Thanks to these characteristics of said junction element 1, 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 α.

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. Thus, the performance of the military piercing projectile 3 as a whole can be improved by using the joining element 1 according to the invention.

In addition to its participation in the mechanical strength of the body of the projectile, 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). By using a bonding for the joining of these parts, it is not necessary to drill the composite material (as for example for a screw fastener) which could promote a rupture during an impact on a target 20 The fibers composing the composite material (and ensuring most of the mechanical strength of the composite material) are therefore not damaged or cut. The The mechanical properties of the composite material are therefore not deteriorated by the fastening. In addition, the adhesive used can be chosen according to the environmental conditions of use of the projectile 3, which improves the fixing.

In a first embodiment (shown in the Figures 1 to 5 ), 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 . In this embodiment, 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 ).

In a particular embodiment, 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.

• soit être située dans un plan qui est radial par rapport audit axe longitudinal 10, comme pour les surfaces de contact 13A représentées sur la figure 4 ;
• soit présenter une forme conique qui, vers l'arrière, s'étend vers l'extérieur, comme pour les surfaces de contact 13B représentées sur la figure 5.

In this first embodiment, said stop 13 has at least one contact surface 13A, 13B, and preferably a plurality of contact surfaces which succeed one another in the radial direction (directly or via the face 16). In the context of the invention, such a contact surface can:

• be located in a plane which is radial with respect to said longitudinal axis 10, as for the contact surfaces 13A represented on the figure 4 ;
• have a conical shape which, towards the rear, extends outwards, as for the contact surfaces 13B represented on the figure 5 .

In the context of the present invention, any possible combination of these different contact surfaces 13A, 13B, and 16 is conceivable. This makes it possible to achieve an advantageous contact between the stop 1 3 and the front face 14 of the cylindrical body 4, in particular to efficiently transmit to said cylindrical body 4 the forces generating the axial compression. Thus, preferably, when one moves on the axis of the projectile 3, in the direction of increasing pressures on impact, that is to say from the back to the front, the introduction of successive walls is carried out gradually using conical parts.

Moreover, in a second embodiment (shown on the Figures 6 to 8 ), 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 . In this second embodiment, 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.

Preferably, in this second embodiment, 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).

As represented for example on the figure 7 , 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.

In addition, in particular to improve the mounting, said lip 22 has a tapered shape tapered rearwardly, as shown in particular on the figure 7 .

Moreover, in a first variant embodiment (applied to any one of the first and second embodiments mentioned above, and not shown), 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. To do this, 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.

In addition, in a second embodiment variant (also applied to any one of the aforementioned first and second embodiments), 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). In this embodiment, 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.

• il peut être réalisé de façon simple ;
• il est adapté à tout type de matériau composite ; et
• il permet une utilisation optimisée dudit matériau composite (en travaillant essentiellement en tenue axiale) et rend plus simple la fabrication du corps cylindrique 4. En effet, la partie du projectile 3 en matériau composite peut par exemple être réalisée sous forme d'un cylindre ou tube (ou d'une autre forme géométrique simple), au lieu d'une géométrie plus complexe.

The joining element 1 according to the invention, which therefore contributes to the maintenance of the composite material and which plays a preponderant role in the mechanical resistance to impact of the entire projectile 3, also has the following advantages:

• it can be done in a simple way;
• it is suitable for any type of composite material; and
• it allows an optimized use of said composite material (working essentially in axial resistance) and makes it simpler to manufacture the cylindrical body 4. In fact, the part of the projectile 3 made of composite material can for example be made in the form of a cylinder or tube (or another simple geometric form), instead of a more complex geometry.

In a particular embodiment, 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.

In addition, in a particular embodiment, 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.

In the preceding description, which relates to the preferred embodiment of the invention, the connecting element 1 is intended to connect a metal nose 2 to a body 4 of composite material on a projectile. However, in the context of the present invention, 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. Of course, the forces are less important at the rear than at the front of the projectile 3.

Claims (12)

1. Penetrating military projectile provided at least with a body (4) and a metal nose (2) arranged at the front of said body (4), and a connecting element (1) which is arranged so as to attach said metal nose of said penetrating military projectile (3) to said body (4), said connecting element (1) having a longitudinal axis (10), the portion (12) of said connecting element (1) intended to be attached to said body (4) comprising at least:

   - an annular stop (13, 23) which is centred relative to the longitudinal axis (10) and is intended to come into contact with an edge (14, 24) of said body (4); and

   - a longitudinal extension (15, 25) which is defined from said stop (13, 23), comprises a contact face (16, 26) and has a shape and a diameter which are adapted to said body (4), such that the contact face (16, 26) of said extension comes laterally into contact with a peripheral surface (17, 27) of said body, characterised in that said body (4) is made of a composite material and in that the radially successive walls of said projectile (3) in the region of the connection are such that the rigidity thereof under pressure increases radially outwards.
2. Projectile according to claim 1, characterised in that said longitudinal extension (15) has a diameter which is adapted to said body (4) so as to be able to come laterally into contact with a radially outer face (17) of said body.
3. Projectile according to claim 2, characterised in that the contact face (16) of said longitudinal extension (15), which face is intended to come into contact with the body (4), is provided with at least one channel (21) forming a housing capable of receiving the adhesive.
4. Projectile according to either claim 2 or claim 3, characterised in that said stop (13) comprises at least one contact surface (13A, 13B) in a general radial direction.
5. Projectile according to claim 4, characterised in that said stop (13) comprises a plurality of contact surfaces (13A, 13B) which succeed one another in the radial direction.
6. Projectile according to either claim 4 or claim 5, characterised in that at least one contact surface (13A) is located in a plane which is radial with respect to said longitudinal axis (10).
7. Projectile according to any of claims 4 to 6, characterised in that at least one contact surface (13B) is of a conical shape which extends outwards towards the rear.
8. Projectile according to claim 1, characterised in that said longitudinal extension (25) has a diameter which is adapted to said body (4) so as to be able to come laterally into contact with a radially inner face (27) of said body.
9. Projectile according to claim 8, characterised in that it further comprises an annular lip (22) which is attached to the outer edge of the stop (23) and is longitudinally arranged opposite said longitudinal extension (25) so as to be able to come laterally into contact with a radially external face (28) of said body (4).
10. Projectile according to any of the preceding claims, characterised in that said connecting element (1) is arranged so as to attach the metal nose (2) to the body (4) made of a composite material.
11. Projectile according to claim 10, characterised in that said connecting element comprises, in the region of its front portion, connecting means which allow it to be attached to the metal nose.
12. Projectile according to claim 10, characterised in that the rear portion of the metal nose (2) comprises said connecting element (1).

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