DE4023482A1 - Sub-calibre projectile with increased penetration capability - provided by penetrator cores of increasing size - Google Patents

Sub-calibre projectile with increased penetration capability - provided by penetrator cores of increasing size

Info

Publication number
DE4023482A1
DE4023482A1 DE19904023482 DE4023482A DE4023482A1 DE 4023482 A1 DE4023482 A1 DE 4023482A1 DE 19904023482 DE19904023482 DE 19904023482 DE 4023482 A DE4023482 A DE 4023482A DE 4023482 A1 DE4023482 A1 DE 4023482A1
Authority
DE
Germany
Prior art keywords
core
cores
main core
projectile
tip
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.)
Ceased
Application number
DE19904023482
Other languages
German (de)
Inventor
Peter Dipl Ing Wallow
Horst Fritsch
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.)
Rheinmetall Industrie AG
Original Assignee
Rheinmetall GmbH
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 Rheinmetall GmbH filed Critical Rheinmetall GmbH
Priority to DE19904023482 priority Critical patent/DE4023482A1/en
Priority claimed from DE9018051U external-priority patent/DE9018051U1/en
Publication of DE4023482A1 publication Critical patent/DE4023482A1/en
Ceased legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/04Projectiles, 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
    • F42B12/06Projectiles, 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 hard or heavy core; Kinetic energy penetrators

Abstract

A subcalibre projectile (10) has a ballistic nose cap (11) and a series of cores (20-22), the leading cores being relatively light initial cores (21, 22) and the trailing core being a relatively heavy main core (20). The novelty is that (a) the front end of the projectile (10) has a first initial core (21) with a cylindrical region (23) and a conically tapering front region; (b) the cylindrical region (23) has a smaller diameter than a second cylindrical initial core (22) located behind the first initial core (21); (c) the second initial core (22) has a smaller diameter than that of the main core (20); and (d) the nose cap (11), enclosing the initial cores (21, 22) and part of the main core (20), is provided with a separate tip (12). ADVANTAGE - The projectile has a simple structure and increased penetration capability without deleterious transverse force effects on the main core when used against targets of multiple material construction (multilayer armour).

Description

The invention relates to a sub-caliber balancing projectile according to the preamble of claim 1.

A bullet of the same type is used in Scripture DE-PS 27 43 732 discloses, which has a plurality of pre-cores, which are summarized in such a way that they take you out of one going to form a stack of existing projectile bodies. The before Cores are on this floor with their flat ones Partitions lying, centering with each other Means in the form of external collars or internal the pin or be with a central Befe set screw connected together. In one execution For example, the entire floor is composed of such against partial cores of the same mass. In other versions Examples are five pre-cores in front of a main core ordered, when hitting the target core by core must be dismantled. Because these pronuclei are always the same large, there is the disadvantage with this floor, that the individual cores are not sufficient when broken down far from the area of the firing channel and thus the Block removal of the subsequent cores.

To improve the breakthrough performance against multiple armor or structured targets is a generic one ches projectile known from DE-PS 14 28 679, the from axially arranged armor-piercing Tungsten carbide or heavy metal cores exist, the Cores through an intermediate layer of damping material  are separated from each other. A disadvantage with this force storey training is that about 30% of the storey volume the best from the non-effective intermediate layers hen. This projectile is subject to poor launch stability with the risk of cross-sectional expansion in the damping zones bonded with synthetic resin, for example. The the smallest possible shell blows out in the event of a target impact each other, the intermediate layers are pulled out to the side squeezes and, since there is no connection of the cores to each other is given, the projectile therefore loses on impact the guidance and centering between the cores that then laterally from the longitudinal direction of the floor hike.

A projectile disclosed in EP-B 01 43 775 has a main core with two upstream cylindrical front cores which have a smaller diameter than the main core. The ballistic hood, which is screwed onto the front end of the main core, rests only on the front on a rubber ring that surrounds a central attachment of the front core. This slight frontal support may be sufficient to hold the front cores on the main core during transport of the projectile, but there is a risk that the front cores lose their axial alignment due to impacts on the projectile. Although the support surfaces of the cores for receiving the respective upstream core have protruding edge beads, these do not prevent the cores from tilting if the foremost support is no longer guaranteed due to the small contact surface of the rubber ring.

The invention has for its object a genus to develop the same floor in such a way that a multiple storeys to increase the penetration rate harmful shear forces on a main core at targets in multi-component construction are avoided.  

This object is achieved by the features of characterizing part of claim 1 solved.

The subclaims disclose particularly advantageous features Events of the invention.

The invention is illustrated in the drawings ten different exemplary embodiments explained in more detail, it shows:

Fig. 1 shows an inventive subcaliber Wuchtge shot in longitudinal section;

Fig. 2 shows another exemplary embodiment according to FIG. 1.

In Fig. 1, the reference numeral 10 denotes a Unterka-caliber balancing projectile with a sabot 35 and with egg nem core 20 of length 40 large mass and two Vorker NEN 21 , 22 lower mass. A tail unit 30 is arranged at the rear of the main core 20 . The projectile 10 is front side provided with a ballistic hood 10 which encloses the front cores 21 , 22 and which is attached to the main core 20 in a front region 27 , for example via a thread de. The front region 27 of the main core 20 is somewhat reduced compared to the average diameter of the main core 20 and lies in an air pocket 36 of the sabot 35 .

The front region 27 of the main core 20 has a threaded pin 26 on the end face for axially fixing the second pre-core 22 , which has the shape of a cylinder but has a smaller diameter than the front region 27 of the main core 20 .

The first pre-core 21 has a cylindrical region 23 , with a smaller diameter than the second pre-core 22 and tapers conically in the direction of a tip 12 of the Ge 10th This tip 12 is slightly rounded on the front and is screwed as a separate part via a threaded pin 13 into the ballistic hood 11 . The first pre-core 21 is axially fixed with the tip 12 via a grub screw 14 .

Between the first pronucleus 21 and the cylindrical front of core 22 is disposed rial an intermediate layer 15 made of a softer mate, and the threaded pin 26 between the zy-cylindrical pronucleus 22 and the main core 20 is surrounded also by a layer 16 of such material.

FIG. 2 shows a further embodiment of a projectile 10 according to the invention, which has a greater length / diameter ratio than that shown in FIG. 1. Components, as they also have the first embodiment form according to FIG. 1, are provided with the same reference numerals in FIG. 2 for better clarity.

The main core 20 has a length 50 according to FIG. 2, which is greater than the length 40 in FIG. 1. The ballistic hood 11 is also fixed in this embodiment on the reduced diameter region 27 of the main core 20 , but extends only up to the air pocket 36 of the sabot 35 . The main core 20 is extended in front of the area 27 by an area 28 whose diameter corresponds to the diameter of the cylindrical front core 22 and which is smaller than the diameter of the area 27 . The area 28 has a cylindrical shape but has a partial area 29 in the form of a truncated cone on the front. At this area 29 close in the direction of the tip 12 , the attachment as in the exemplary embodiment gem. takes place in FIG. 1, two pronuclei 21, 22 at.

On intermediate layers 15 , 16 was omitted in this game. The cylindrical pre-core 22 has at its front end a collar 25 which axially fixes the first pre-core 21 . The cylindrical pre-core 22 is fixed to the main core 20 via the frustoconical region 29 of the main core 20 , which engages in a corresponding recess 24 of the pre-core 22 from below.

The projectiles 10 according to the invention, which are shown in FIGS. 1 and 2, are particularly suitable for combating targets in multi-material construction, in which layers of glass or ceramic are arranged between the steel armor plates.

By the pre-cores 21 , 22 when using the Ge bullets 10 there is a penetration-enhancing increase in the destroyed volume in the special layer, since an increase in the diameter of the firing channel is achieved in this layer, thereby reducing the harmful effects of transverse forces on the subsequent main core 20 will.

For penetration into the first plate of the target, the tip 12 according to the invention screwed into the ballistic hood 11 and its geometric design are of importance. This tip 12 , as well as the two front cores 21 , 22 and the main core 20 , is made of tungsten heavy metal and thus represents a target-effective element of the Ge bullet 10. Is this tip 12 on the front with a sharp tip - as a pointed cone - designed, this shears off when it hits the armor plate and causes an adverse deflection of the projectile 10 on the plate. Tips in the form of a truncated cone are also unfavorable for the first bite on the first plate. Therefore, the shape of the tip 12 , in the Ge shot 10 according to the invention optimized to the effect that it causes a metered penetration and initiates the penetration process for the following cores 20 , 21 , 22 . Such a Spit ze 12 made of tungsten heavy metal do not have other bullets of the same type. These are only surrounded on the front with an aluminum shell that has no effective properties.

The tip 12 according to the invention comes off during the penetration. The first pre-core 21 of small mass, which tapers conically on the front, causes the projectile to deflect from the original trajectory in the direction of the surface normal when penetrating into the special layer made of glass or ceramic. The second cylindrical pre-core 22 also acts in the special layer. The fact that it is blunt on the front, it causes no further deflection of the projectile, but also improves, like the first pre-core 21 , the boundary conditions for a penetration of the main core 20 , since both pre-core 21 , 22 depending on their shape and Mass influence the strength of the lateral force effect or a directional deflection and thus contribute to an increase in the destroyed volume.

The two pre-cores 21 , 22 cause a shift in the special layer upwards of the pressure center triggered by the penetration and the associated material displacements. The formation of a pressure center in the son derschicht affects such targets so that there is a bulge in the weft direction of the second plate. If this is not shifted away from the firing channel by suitable precautions on the respective storey, this has a disadvantageous effect on the main core, since the pressure waves returning from the center trigger additional forces on the main core and furthermore a larger one due to the bulging of the second plate for the storey path length to be penetrated is specified.

The intermediate layers 15 , 16 disclosed in FIG. 1 made of a softer material - preferably aluminum - cause the shocks that run backwards when impacting to a large extent to be reflected on these intermediate layers and only a fraction of the impact energy enters the main core can. This results in a time delay between the individual effects of the three cores 20 , 21 , 22 .

According to the embodiment of FIG. 1, the main core 20 has a threaded pin 26 on its front region 27 , to which the second pre-core 22 is fastened. When the second pre-core 22 is broken off in the special layer, this pin 26 remains on the projectile core 20 and offers this a good biting edge for the second armor plate of the multiple target to be penetrated. In the exemplary embodiment according to FIG. 2, this is achieved by the conically shaped part 29 of the main core 20 .

In the embodiment according to FIG. 2, the main core 20 of length 50 is extended by approximately 20% compared to that in FIG. 1 with length 40 . Such bullets of great length / diameter ratio have been known to have high penetration rates, but are significantly more likely to break than short bullets. In particular with such long gene cores 20 , a reduction in the lateral forces is therefore important.

In the case of the projectile 10 according to FIG. 2, this is also achieved by the arrangement of the pre-cores 21 , 22 and the tip 12 according to the invention. The axial fixation of the cylindrical front core 22 disclosed in FIG. 1 by a threaded pin 26 and the arrangement of shock-absorbing intermediate layers 15 , 16 between the cores 20 , 21 , 22 can also be transferred to a projectile 10 according to FIG. 2, who while the shape of the main core 20 with a front conically shaped part 29 and a cylindrical front core 22 provided with an annular bead 25 can also be transferred to the projectile 10 according to FIG. 1.

The projectiles 10 of the two embodiments according to FIGS . 1 and 2 have proven their worth in bombardment tests on multi-material Sonderzie with an inclination angle of 65 ° and achieved a significant increase in the penetration performance compared to conventional bullets of the same type.

Reference symbol list

10 sub-caliber balancing projectile
11 ballistic hood
12 tip
13 threaded pins
14 grub screws
15 liner
16 liner
20 main core
21 first pre-core
22 second pre-core
23 cylindrical area of the first pre-core
24 recess of the second pre-core
25 ring bead of second pre-core
26 threaded pin
27 front area main core
28 part of the main core of smaller diameter
29 conically shaped part of the main core
30 tail unit
35 sabot
36 air pocket
40 length main core
50 length main core

Claims (6)

1. Sub-caliber balancing projectile ( 10 ) with a ballistic hood ( 11 ) and with several consecutively arranged cores ( 20 , 21 , 22 ), the front cores as the pre-cores ( 21 , 22 ) of smaller mass and the rear core as the main core ( 20 ) of a larger mass, characterized by the following features:
  • a) the projectile ( 10 ) is provided on the front side with a first front core ( 21 ) which has a cylindrical loading area ( 23 ) and which tapers conically on the front side,
  • b) the cylindrical region ( 23 ) of the first preliminary core ( 21 ) has a smaller diameter than the second cylindrical preliminary core ( 22 ), which is arranged behind the first preliminary core ( 21 ),
  • c) the second preliminary core ( 22 ) has a smaller diameter than the main core ( 20 ) arranged behind it,
  • d) the ballistic hood ( 11 ) surrounding the preliminary cores ( 21 , 22 ) and a partial area of the main core ( 20 ) is provided with a separate tip ( 12 ).
2. balancing projectile according to claim 1, characterized in that the tip ( 12 ) is rounded down.
3. balancing projectile according to claim 1 or 2, characterized in that the tip ( 12 ) is screwed into the ballistic hood ( 11 ), and that the first pre-core ( 21 ) is axially fixed by a grub screw ( 14 ) on the tip ( 12 ) is.
4. balancing projectile according to claim 1, 2 or 3, characterized in that the main core ( 20 ) is provided with a threaded pin ( 26 ) for fixing the second pre-core ( 22 ).
5. balancing projectile according to one of claims 1 to 4, characterized in that the se separate tip ( 12 ), the pre-cores ( 21 , 22 ) and the main core ( 20 ) consist of tungsten heavy metal.
6. balancing projectile according to one of claims 1 to 5, characterized in that between the main core ( 20 ) and the second preliminary core ( 22 ) and between the two preliminary cores ( 21 , 22 ) intermediate layers ( 15 , 16 ) made of a softer material are arranged.
DE19904023482 1990-07-24 1990-07-24 Sub-calibre projectile with increased penetration capability - provided by penetrator cores of increasing size Ceased DE4023482A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904023482 DE4023482A1 (en) 1990-07-24 1990-07-24 Sub-calibre projectile with increased penetration capability - provided by penetrator cores of increasing size

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9018051U DE9018051U1 (en) 1990-07-24 1990-07-24 Sub-caliber balancing projectile
DE19904023482 DE4023482A1 (en) 1990-07-24 1990-07-24 Sub-calibre projectile with increased penetration capability - provided by penetrator cores of increasing size

Publications (1)

Publication Number Publication Date
DE4023482A1 true DE4023482A1 (en) 1992-01-30

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Family Applications (1)

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DE19904023482 Ceased DE4023482A1 (en) 1990-07-24 1990-07-24 Sub-calibre projectile with increased penetration capability - provided by penetrator cores of increasing size

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130340646A1 (en) * 2012-03-06 2013-12-26 Nexter Munitions Sub-caliber projectile with a fitted head structure
DE102015117018A1 (en) * 2015-10-06 2017-04-06 Rheinmetall Waffe Munition Gmbh Penetrator and subcaliber projectile

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1428679C1 (en) * 1964-12-29 1977-09-15 Deutsch Franz Forsch Inst Hard core projectile for combating armored targets
DE3209594A1 (en) * 1982-03-17 1983-09-29 Rheinmetall Gmbh Target-breaking rifle sheet, in particular to fight multiple-plate targets
EP0143775A2 (en) * 1983-11-23 1985-06-05 VOEST-ALPINE Aktiengesellschaft Sub-calibre penetrator and method of making the same
DE2743732C2 (en) * 1977-09-29 1987-11-19 Rheinmetall Gmbh, 4000 Duesseldorf, De

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1428679C1 (en) * 1964-12-29 1977-09-15 Deutsch Franz Forsch Inst Hard core projectile for combating armored targets
DE2743732C2 (en) * 1977-09-29 1987-11-19 Rheinmetall Gmbh, 4000 Duesseldorf, De
DE3209594A1 (en) * 1982-03-17 1983-09-29 Rheinmetall Gmbh Target-breaking rifle sheet, in particular to fight multiple-plate targets
EP0143775A2 (en) * 1983-11-23 1985-06-05 VOEST-ALPINE Aktiengesellschaft Sub-calibre penetrator and method of making the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130340646A1 (en) * 2012-03-06 2013-12-26 Nexter Munitions Sub-caliber projectile with a fitted head structure
US8869704B2 (en) * 2012-03-06 2014-10-28 Nexter Munitions Sub-caliber projectile with a fitted head structure
DE102015117018A1 (en) * 2015-10-06 2017-04-06 Rheinmetall Waffe Munition Gmbh Penetrator and subcaliber projectile

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