Bullet

Abstract

The invention relates to a projectile (10) with a projectile casing (12) having a projectile front (14) with a front opening (18), wherein the front opening (18) can be closed by means of a locking screw (20), wherein a filling explosive charge centering tube (42) is attached inside the projectile casing (12), in which at least one filling explosive charge (60, 62) limited by a filling explosive charge cup (64, 66) is arranged, wherein a predetermined breaking point (68) is formed on a bottom (54) of the filling explosive charge centering tube (42) facing away from the projectile front (14), and wherein at least one vent channel (70, 72) is formed on the filling explosive charge cup (64, 66), which provides a flow connection between a first internal section (74) at the bottom (54) of the filling explosive charge centering tube (42) and a second internal section (76) of the filling explosive charge centering tube. (42) is produced, which is located on the side of the filling explosive charge (60, 62) facing the projectile front (14).

Description

[0001] The present invention relates to a projectile having the features of the preamble of claim 1.

[0002] Projectiles of the type mentioned above are known from the prior art and are used, for example, as high-explosive projectiles in artillery. For safety reasons, such projectiles are usually delivered unfuzed (without a nose fuse) and stored, for example, in military depots. For ease of handling, such projectiles are often equipped with a locking ring screw.

[0003] Such projectiles are subject to external influences during transport and storage, such as vibrations, temperature changes, or, in extreme cases, fire or gunfire. A key safety requirement is therefore a low reactivity or minimal damage caused by these (unprimed) projectiles. If, for example, a fire exposes a projectile to a high level of external thermal energy, the internal pressure within the projectile casing increases due to the rising temperature. This increased temperature triggers the decomposition of the explosives, which, exacerbated by the high internal pressure, can, in extreme cases, lead to the explosives inside the projectile detonating (deflagration to detonation). Independently of this, the rising internal pressure also increases the prestress acting on the projectile casing, so that the casing can fail if its strength limits are exceeded, potentially resulting in...Large amounts of energy are transferred to fragments of the projectile casing and its surroundings. This poses a potential hazard to people and property in the vicinity of the projectile.

[0004] In the prior art, various measures were implemented to relieve pressure in the event of an increase in internal pressure within the projectile (e.g., due to external thermal influences). For example, the threads on the projectile base, which is screwed into the projectile casing, were designed to be weak or short so that the thread could shear off when the internal pressure increased. However, the weakened base thread limits the projectile's usability, for example, when used in high-performance weapons. A weak (short) thread is also sensitive to assembly errors, making assembly impossible or causing the projectile base to detach during firing. Furthermore, the projectile's drop resistance is reduced with short base threads.

[0005] Furthermore, thin-walled bullet casings or a muzzle ring were used on the bullet body to cause the casing to rupture in the event of a pressure increase in the (upper) ogive area. However, this can negatively affect fragmentation and lead to reduced effectiveness against infrastructure. The firing strength (strength during firing) of the bullet can also be limited by a thin-walled bullet casing.

[0006] DE 10 2013 014 811 A1 shows a projectile with an axially displaceable tip. This allows part of the tip to be pushed axially forward when internal pressure increases, thus opening venting channels. DE 10 2014 013 316 A1 shows a projectile tip with a meltable connecting element. This allows the tip, along with the fuze, to be detached by heating without high pressure, allowing the explosive charge to be pushed forward and released. In the case of such detachable or displaceable projectile tips, the construction of the projectile casing—that is, the structure that must be resistant to firing—is more complex, consisting of a comparatively large number of individual parts.

[0007] The invention is based on the objective of enabling pressure relief of any internal pressure that may prevail in the projectile casing using simple design means. It is desirable that this does not negatively affect the projectile's performance. The projectile's firing resistance should also be maintained.

[0008] The invention solves this problem by means of a projectile with the features of claim 1.

[0009] The projectile has a casing that extends along a central longitudinal axis and features (at the front in the direction of fire) a projectile front (tip) with a front opening (mouth). The front opening can be closed by means of a breech screw or is closed (unprimed state).

[0010] Inside the shell casing, adjacent to and aligned with the front opening, is a filling charge centering tube (mouthpiece bushing). This tube contains at least one filling charge (amplifier charge) bounded (outwardly) by a filling charge cup.

[0011] A predetermined breaking point is formed on the base of the filling charge centering tube, facing away from the projectile front. At least one vent channel is formed on the filling charge cup, creating a flow connection between a first internal section at the base of the filling charge centering tube and a second internal section of the filling charge centering tube. The second internal section is located on the side of the filling charge facing the projectile front (away from the base of the filling charge centering tube).

[0012] Instead of pressure relief by shearing off the projectile base thread or using a thin-walled projectile casing, this proposal suggests pressure relief towards the projectile front or tip through design features on the filling charge. This allows existing internal pressure (caused by volume expansion upon heating and, if applicable, the formation of gaseous reaction products) to be reduced or dissipated when a limit (internal pressure limit) is exceeded via a predetermined breaking point at the bottom of the filling charge centering tube and one or more venting channels at the filling charge cups. This way, overpressure, e.g.,Pressurized gas, located behind the filling charge centering tube in the direction of fire, is guided forward through the predetermined breaking point and at least one vent channel into a second internal compartment and / or into a space between the filling charge centering tube and the sealing screw. This allows for a reduction in internal pressure, which contributes to a lower potential for damage to personnel and equipment in the event of a hazardous scenario, such as a fire. Furthermore, the influence of these pressure-relieving measures on the projectile's effectiveness and firing reliability is minimized. As already indicated above, the invention fulfills its purpose in the unprimed state of the projectile.

[0013] If, in addition to the above measures, a sealing screw is used that is configured to partially or completely fail upon exceeding a defined (internal) pressure limit, e.g., by shearing the threads or by melting the sealing screw entirely, then complete pressure relief of the internal pressure can occur through the front opening (mouth hole). Regardless, the sealing screw can have a loop section over which the projectile can be handled. In other words, the sealing screw can be designed as a loop screw or a lever-type sealing screw.

[0014] The projectile may be a high-explosive projectile with a nose fuse receptacle. The infill charge(s) may each be a booster charge to initiate a main explosive charge. The projectile may have a caliber of 105 mm, 152 mm, or 155 mm (millimeters).

[0015] The filling cup of the explosive charge confines the charge on both the outer (radial) side and preferably also (at the front, i.e., in the direction of firing) to the front and rear. In other words, the filling cup at least partially, and preferably completely, encloses the explosive charge.

[0016] The projectile casing may have a rear (base-side) opening in the direction of fire, to which the casing is provided with an internal thread. A projectile base may be provided, which has an external thread corresponding to the internal thread. The projectile base can be screwed into the opening and, when screwed in, closes the opening of the projectile casing.

[0017] The filling charge centering tube can be screwed into the projectile casing (from the bottom opening). The projectile casing can have an internal thread, and the filling charge centering tube a corresponding external thread. When screwed in, the filling charge centering tube is attached to the projectile casing. The filling charge centering tube can then have a (radially) outwardly projecting collar at the external thread, to which a seal, such as an O-ring, is attached. A shoulder can be provided on the projectile casing against which the filling charge centering tube rests when screwed in.

[0018] In a preferred embodiment, the filling charge centering tube can have an annular groove (retaining ring groove) in the second internal section, in which a retaining ring, in particular a snap ring, is arranged. The retaining ring limits the movement of the filling charge(s) towards the front opening. Preferably, one of the filling charge(s) can rest against the retaining ring, so that the retaining ring fixes the filling charge(s) towards the front opening. If a maximum internal or storage temperature in the projectile casing is exceeded due to heating, movement and / or thermal expansion of the filling charge can occur. This releases the retaining ring from the annular groove, thus allowing movement of the filling charge towards the front opening.In other words, as long as a maximum internal or storage temperature of the projectile is not exceeded, the retaining ring holds the filling explosive device(s) in position and releases the filling explosive device(s) once the maximum storage temperature is exceeded.

[0019] Advantageously, the filling explosive charge centering tube is designed such that the filling explosive charge(s) (after loosening the retaining ring) can be displaced within the tube towards the front opening. This not only facilitates the installation of the filling explosive charge but also promotes a reduction in internal pressure, as the filling explosive charge(s) can expand lengthwise and / or move towards the front opening. Specifically, the filling explosive charge(s) can be adapted to the cross-section of the filling explosive charge centering tube. Furthermore, the filling explosive charge centering tube can be designed such that a certain (free) tube length remains available from the annular groove towards the front opening.

[0020] The predetermined breaking point can be expediently formed by one or more (geometric) notches on the base of the projectile centering tube. Such notches represent easily manufactured, defined breaking points. This allows the base of the projectile centering tube to rupture at the defined geometric notch(es) after the shear strength is exceeded by the internal pressure of the projectile casing acting on the base. The notches can be located on the side of the base of the projectile centering tube facing the projectile front. The one or more notches can be arranged circularly or define a circular shape (in the case of multiple notches, the circular shape can be interrupted into individual circular segments or segments of annulus).

[0021] In a preferred embodiment, the venting channel(s) can each be configured as a recess or flattened area formed in the blast cup, open radially outwards towards the blast centering tube. This allows for the simple formation of one or more venting channels by simply creating a recess or flattened area in the blast cup. The recess or flattened area is bounded radially inwards by the blast cup and radially outwards by the blast centering tube. The recess or flattened area extends along a longitudinal profile direction, which can optionally be oriented parallel to the central longitudinal axis (installed state). It is also conceivable that the recess or flattened area formed in the blast cup has a rectangular cross-section (base and two side walls).A preferred design, however, is a flattened section (a planar section extending along the longitudinal profile direction of the detonator cup, e.g., a milled section on a surface of the detonator cup) or a design with a negative (concave) rounded recess (recess with a rounded, concave cross-section). Specifically, a detonator cup can have several recesses or flattened sections distributed around its circumference, particularly at equal angles or intervals. In particular, two recesses or flattened sections can be formed on the detonator cup. These can be positioned opposite each other on the detonator cup.

[0022] Advantageously, two filling explosive elements can be arranged in the centering tube, each bounded (outwardly) by a filling explosive cup. This increases the projectile's flexibility, as one or both filling explosive elements can be used as needed (depending on the projectile's intended use). Replacing one filling explosive element with one adapted to a specific application is also conceivable.

[0023] In the case of two filling explosive devices in the filling explosive device centering tube, one or more recesses or flattened areas can be formed on each filling explosive device cup, as described above. For a venting channel with sufficient flow characteristics, it is advantageous if the recesses or flattened areas on the two filling explosive device cups are designed and / or aligned such that they are aligned with each other. Optionally, at least one of the two filling explosive devices can have a groove section on its end face (groove section on end face) on its filling explosive device cup, preferably both filling explosive device cups, which connects at least two of the recesses or flattened areas of this filling explosive device cup. This ensures a venting channel with sufficient flow connection even if the recesses or flattened areas on the filling explosive device cups of adjacent filling explosive devices are not aligned with each other.The groove(s) are formed, in particular, on the end face of the filling charge cup that faces the other filling charge. Optionally, a retaining strap can be guided through the recesses or flattened areas and the end-face groove of a filling charge cup. This allows for easy removal of the filling charge from the projectile casing.

[0024] In principle, it is conceivable that the filling explosives have the same cross-section and / or that the filling explosive centering tube, particularly throughout, has a section with a uniform cross-section for (suitable) receiving of the filling explosives. Thus, filling explosives with corresponding cross-sections can be used in the filling explosive centering tube, regardless of whether they are arranged at the front or rear of the tube in the direction of fire.

[0025] Advantageously, the filling explosives can differ in cross-section and / or the filling explosive centering tube can have two sections (receiving sections) with different cross-sections to accommodate a different filling explosive, each suitable for a specific filling explosive. This contributes to increased projectile flexibility, as filling explosives of different dimensions can be used, which can be accommodated (suitably) in the filling explosive centering tube. Interchangeability is also possible. Preferably, the filling explosive or the associated receiving section has larger external dimensions, particularly a larger external diameter, at the front in the direction of fire than the filling explosive or the associated receiving section at the rear in the direction of fire.

[0026] Specifically, a main charge can be located inside the projectile casing on the side of the primer tube facing away from the projectile's front. The main charge is used to achieve the desired effect at the target. The main charge can be, in particular, an explosive charge. The main charge can be pressed or cast into the projectile casing.

[0027] As mentioned above, the projectile casing (at the rear in the direction of fire) can have an opening that can be closed by a screw-in base plate. The main charge can thus be inserted through this opening (with the base plate removed).

[0028] In principle, it is conceivable that the filling explosive centering tube is enclosed (radially) outwards, at least axially, by a gas, e.g., air. This simplifies the design of the projectile, particularly with a cast main charge or a cast explosive charge. Alternatively, the filling explosive centering tube can be enclosed (radially) outwards, at least axially, by the main charge (explosive charge). This can be implemented easily, especially with a cast main charge or a cast explosive charge. A cavity between the main charge and the filling explosive centering tube can thus be reduced or eliminated.

[0029] Advantageously, the filling charge centering tube can be at least axially partially enclosed by a filling material, particularly a silicone compound. This allows any cavity present in the projectile casing at the filling charge centering tube to be easily filled, regardless of the main charge's construction (cast or pressed). Optionally, the filling material can cover the filling charge centering tube towards the main charge and may have a flat end surface. This creates a defined, possibly flat, mating surface for the main charge.

[0030] As mentioned above, a sealing screw can be used that is configured to partially or completely fail when a defined (internal) pressure limit is exceeded, for example, by shearing off the thread or by melting the entire sealing screw (e.g., due to its plastic construction). As a result of the sealing screw failure, the front opening (mouth hole) is at least partially released. This allows the internal pressure within the projectile casing to dissipate to the outside (without a pressure relief element).

[0031] Alternatively, the sealing screw can have a passage in which a pressure relief element is arranged. The pressure relief element is preferably designed such that it at least partially fails or collapses (e.g., by being made of plastic) when a defined (internal) pressure limit is exceeded. The passage in the sealing screw is thus at least partially opened, allowing the internal pressure within the shell to be released to the outside.

[0032] Alternatively, it is conceivable that the locking screw could be designed as described in US 2017 / 016705 A1.

[0033] The invention is explained in more detail below with reference to the figures, where identical or functionally identical elements are provided with identical reference numerals, possibly only once. The figures show: Fig. 1. An embodiment of a projectile in a longitudinal section; Fig. 2 an enlarged partial view of the floor Fig. 1 in the area of ​​the front opening; Fig. 3 a further enlarged partial view of the floor Fig. 1 according to excerpt III in Fig. 2; Fig. 4 the projectile's filling explosive cups made of Fig. 1 in a perspective view, with the filling explosive cups touching each other; and Fig. 5 the projectile's filling explosive cups made of Fig. 1 in a perspective view in a spaced-apart state.

[0034] Fig. Figure 1 shows a longitudinal section of an embodiment of a projectile, the projectile as a whole being designated by reference numeral 10.

[0035] The projectile 10 has a projectile casing 12 that extends along a central longitudinal axis M and has a projectile front 14 (at the front in the direction of fire S). The projectile casing 12 defines an interior projectile space 16 and is rotationally symmetrical in this example.

[0036] The projectile casing 12 tapers towards the projectile front 14. A front opening 18 (mouth hole) is formed at the projectile front 14, which is closed by means of a locking screw 20. In this example, the locking screw 20 has an eyelet section 22, over which the projectile 10 can be handled. In other words, the locking screw 20 is designed as a lever-type locking screw.

[0037] Guide and / or sealing rings 24 are arranged in the rear section of the projectile casing 12. A projectile tail section 26 is provided on the side facing away from the projectile front 14, which is screwed to the projectile casing 12. The projectile tail section 26 forms the projectile tail. Optionally, the projectile tail section 26 can have an (integrated) gas generator 27.

[0038] The projectile casing 12 has an opening 30 along its central longitudinal axis M, facing away from the projectile front 14 (at the rear in the direction of fire S), at which the projectile casing 12 is provided with an internal thread 32. At the rear of the internal thread 32 (at the rear in the direction of fire S), a further internal thread 34 is provided for attaching the projectile tail section 26.

[0039] A base insert 36 is provided, which has an external thread 38 that corresponds to the internal thread 32 of the projectile casing 12. The base insert 36 is screwed into the internal thread 32 and closes the opening 30.

[0040] The further construction of the floor will be based on the Fig. 2, Fig. 3, Fig. 4 to Fig. 5 described.

[0041] Inside the shell 16, a main charge 40, which may be, for example, an explosive charge, is arranged as the payload. Furthermore, inside the shell 12, adjacent to and aligned with the front opening 18, a filling explosive charge centering tube 42 (mouthpiece bushing) is attached.

[0042] In this example, the filling charge centering tube 42 (before the main charge 40 and any potting compound are introduced) is inserted through the opening 30 into the projectile interior 16 and screwed into the projectile casing 12. The projectile casing 12 thus has an internal thread 44, and the filling charge centering tube 42 has a corresponding external thread 46. When screwed in, the filling charge centering tube 42 is attached to the projectile casing 12.

[0043] In this example, the filling charge centering tube 42 has a (radially) outwardly projecting collar 48 following the external thread 46, to which a seal 49, e.g. an O-ring, is attached. A shoulder 50 is provided on the projectile casing 12, against which the filling charge centering tube 42 rests when screwed in.

[0044] In this example, the filling explosive charge centering tube 42 is enclosed by filling material 52, in particular by a silicone compound, including from a base 54 of the filling explosive charge centering tube 42 to the collar 48. The filling material 52 covers the filling explosive charge centering tube 42 towards the main charge 40 and optionally has a flat end surface 56.

[0045] In the filling explosive centering tube 42, two filling explosives 60, 62 are arranged as an example, each of which is bounded by a filling explosive cup 64, 66, both laterally outwards (on the casing side) and at the ends (on the front side). In other words, the filling explosives 60, 62 are each completely enclosed by their filling explosive cup 64, 66. The filling explosives 60, 62 constitute an intensifying charge for initiating the main charge 40.

[0046] As already indicated above, the filling explosive charge centering tube 42 has its base 54 facing away from the projectile front 14. A predetermined breaking point 68 is formed on the base 54.

[0047] In the example, two vent channels 70, 72 are formed on the filling explosive cups 64, 66, which create a flow connection between a first internal section 74 at the bottom 54 of the filling explosive centering tube 42 and a second internal section 76 of the filling explosive centering tube 42, which is arranged on the side of the filling explosives 60, 62 facing the projectile front 14 (away from the bottom 54).

[0048] The filling charge centering tube 42 has an annular groove 78 in its second internal section 76, in which a retaining ring 79, in particular a snap ring, is arranged. The (front) filling charge 62 rests against the retaining ring 79, so that the retaining ring 79 fixes the filling charges 60, 62 towards the front opening 18. As long as a maximum internal or storage temperature of the projectile 10 is not exceeded, the retaining ring 79 holds the filling charges 60, 62 in position and, after the maximum storage temperature is exceeded (retaining ring 79 is released from the annular groove 78), releases the filling charges 60, 62.

[0049] The filling explosive charge centering tube 42 is designed such that the filling explosive charges 60, 62 (after the locking ring 79 has been released) can be displaced within the filling explosive charge centering tube 42 towards the front opening 18. The filling explosive charges 60, 62 are adapted to the cross-section of the filling explosive charge centering tube 42. Furthermore, the filling explosive charge centering tube 42 is designed such that a certain (free) tube length is still available from the annular groove 78 towards the front opening 18.

[0050] The predetermined breaking point 68 is formed by one or more notches on the base 54 of the filling charge centering tube 42, which in this example are located on the side of the base 54 of the filling charge centering tube 42 facing the projectile front 14. The one or more notches can be arranged circularly or define a circular shape, as explained above.

[0051] In this example, the vent channels 70, 72 are each configured as a recess 80, 81 formed in the filling explosive cup 64, 66, which is open towards the filling explosive centering tube 42 (radially outwards). A configuration of the vent channels 70, 72 with flattened sections is also conceivable. The recesses 80, 81 are bounded (radially) inwards by the respective filling explosive cup 64, 66 and (radially) outwards by the filling explosive centering tube 42.

[0052] The recesses 80 and 81 each extend along a profile longitudinal direction N, where the profile longitudinal direction N is oriented parallel to the central longitudinal axis M in this example. The recesses 80 and 81 are provided with a negative (concave) rounding (groove with a rounded concave cross-section).

[0053] In the example, two recesses 80, 81 are formed on each of the filling explosive cups 64, 66, which are arranged opposite each other on the filling explosive cup (in Fig. 4 and Fig. 5 (the "lower" recesses are hidden and not shown for clarity).

[0054] With regard to good flow characteristics, the recesses 80, 81 on the two filling explosive cups 64, 66 are designed and / or aligned such that they are aligned with each other (cf. Fig. 4) In the example, a groove section 82 is formed on the end face of the filling explosive body 62 at its filling explosive body cup 66 (groove section 82 on end face), which connects the recesses of this filling explosive body cup 66 to each other.

[0055] The filling explosive devices 60 and 62 differ in their cross-section. The filling explosive device centering tube 42 has two receiving sections (without reference numerals) with different cross-sections, each for receiving a filling explosive device 60 or 62. The filling explosive device 62, or rather its associated receiving section, has larger external dimensions at the front (in the firing direction S) than the filling explosive device 60, or rather its associated receiving section, at the rear (in the firing direction S).

[0056] As a sealing screw 20, a sealing screw can generally be used which is configured to partially or completely fail when a defined (internal) pressure limit is exceeded in the interior of the floor 16.

[0057] In the example, the sealing screw 20 has a passage 84 in which a pressure relief element 86 is arranged (see Fig. 2) The pressure relief element 86 is designed such that it at least partially fails or collapses when a defined (internal) pressure limit is exceeded. Any internal pressure prevailing in the shell 12 can then be released to the outside.

[0058] Floor 10 and the proposed pressure relief measures operate as follows: If the internal or storage temperature of the projectile 10 rises, the projectile 10 and the components located in the projectile casing 12 heat up. As a result of the heating, the filling explosives 60, 62 undergo thermal expansion, which causes the retaining ring 79 to be forced out of the annular groove 78 or to be released if the maximum internal or storage temperature of the projectile 10 is exceeded.

[0059] If further heating occurs, the bottom 54 of the filling explosive centering tube 42 breaks at the predetermined breaking point 68 (defined geometric notch) after exceeding the shear strength due to the applied (internal) pressure (internal pressure is indicated by the arrows in Fig. 2 shown).

[0060] The internal pressure of the main charge 40 (explosive charge) is reduced by expansion towards the open bottom 54 of the filling charge centering tube 42. Reaction products in the form of gases spread towards the open bottom 54 of the filling charge centering tube 42.

[0061] The venting channels 70, 72 (recesses 80) on the filling explosive cup 64 allow initial reaction products to escape forward in the firing direction S towards the filling explosive cup 66. The venting channels 70, 72 (recesses 81) on the filling explosive cup 64 allow initial reaction products to escape forward in the firing direction S towards the projectile front 14.

[0062] The filling explosive devices 64, 66 are pressed towards the front opening 18 or the sealing screw 20 as a result of the internal pressure. The recesses 80, 81 prevent (in addition to establishing a flow connection) the filling explosive device cups 64, 66 from jamming in the filling explosive device centering tube 42 during the (radial) compression of the filling explosive device centering tube 42 by the applied pressure (compare lateral arrows in Fig. 2).

[0063] Pressure is relieved or the explosive material is forced out of the inside of the filling explosive devices 60, 62 through the front opening 18, e.g. through the passage 84 of the sealing screw 20 as described above. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2013 014 811 A1

[0006] DE 10 2014 013 316 A1

[0006] US 2017 / 016705 A1

[0032]

Claims

[1] Projectile (10), with a projectile casing (12) extending along a central longitudinal axis (M) and having a projectile front (14) with a front opening (18), wherein the front opening (18) can be closed or is closed by means of a locking screw (20), wherein inside the projectile casing (12) adjacent to and aligned with the front opening (18) a filling explosive centering tube (42) is attached, in which at least one filling explosive (60, 62) limited by a filling explosive cup (64, 66) is arranged, characterized by, that a predetermined breaking point (68) is formed on a bottom (54) of the filling explosive centering tube (42) facing away from the projectile front (14) and that at least one vent channel (70, 72) is formed on the filling explosive cup (64, 66), which establishes a flow connection between a first internal section (74) at the bottom (54) of the filling explosive centering tube (42) and a second internal section (76) of the filling explosive centering tube (42), which is arranged on the side of the filling explosive (60, 62) facing the projectile front (14). [2] Projectile (10) according to claim 1, characterized by , that the filling explosive charge centering tube (42) has an annular groove (78) in the second interior section (76) in which a retaining ring (79) is arranged. [3] Projectile (10) according to claim 1 or 2, characterized by, that the filling explosive charge centering tube (42) is designed such that the filling explosive charge(s) (60, 62) are displaceable in the filling explosive charge centering tube (42) in the direction of the front opening (18). [4] Projectile (10) according to any of the preceding claims, characterized by , that the predetermined breaking point (68) is formed by one or more notches on the bottom (54) of the filling explosive centering tube (42). [5] Projectile (10) according to any of the preceding claims, characterized by , that the venting channels (70, 72) are each designed as a recess or flattening (80, 81) formed in the filling explosive cup (64, 66) which is open towards the filling explosive centering tube (42). [6] Projectile (10) according to any of the preceding claims, characterized by , that in the filling explosive centering tube (42) two filling explosive bodies (60, 62) are arranged, each of which is limited by a filling explosive cup (64, 66). [7] Projectile (10) according to claim 6, characterized by , that the filling explosives (60, 62) have the same cross-section and / or that the filling explosive centering tube (42) has a section with a uniform cross-section for receiving the filling explosives (60, 62). [8] Projectile (10) according to claim 6, characterized by , that the filling explosives (60, 62) differ in cross-section and / or that the filling explosive centering tube (42) has two sections with different cross-sections for receiving one filling explosive (60, 62) each. [9] Projectile (10) according to any of the preceding claims, characterized by , that inside the shell of the projectile (12) on the side of the filling explosive centering tube (42) facing away from the front of the projectile (14) a main charge (40) is arranged. [10] Projectile (10) according to any of the preceding claims, characterized by, that the filling explosive centering tube (42) is enclosed at least axially in sections by filling mass (52). [11] Projectile (10) according to any of the preceding claims, characterized by , that the sealing screw (20) has a passage (84) in which a pressure relief element (86) is arranged.

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