JP7397296B2 - warhead - Google Patents

Description

The present disclosure relates to a warhead that includes a bullet shell and an explosive charge filled inside the bullet shell.

Patent Document 1 discloses a warhead that includes a bullet shell and an explosive charge filled inside the bullet shell. In this warhead, grooves are formed in the shell so that the shell ruptures at the grooves due to the impact pressure of the detonation of the explosive charge.

Japanese Patent Application Publication No. 2013-231589

By the way, there is a desire to select the shape of fragments after the bullet shell ruptures, depending on the target of the warhead, etc., immediately before the warhead is detonated, or after the warhead is manufactured. However, in Patent Document 1, the shape of the fragments after the bullet shell ruptures is determined according to the arrangement of the grooves in the bullet shell, so the shape of the fragments cannot be selected after the warhead is manufactured.

An object of the present disclosure is to enable selection of the fragment shape of the shell after rupture after the production of the warhead.

A first aspect includes a bullet shell (11), a main explosive charge (16) filled inside the shell (11), and a first detonation means (17) for detonating the main explosive charge (16). A long metal container (13) with a V-groove (13a) formed on the surface of the warhead, and an explosive wire explosive (14) housed in the container (13). and a shaped explosive wire (12) disposed inside the shell (11) with the V groove (13a) facing the inner surface of the shell (11); A second detonation means (18) capable of detonating the explosive wire explosive (14) of 12) before detonation of the main explosive (16) by the first detonation means (17). It is characterized by

In the first aspect, when the second detonating means (18) detonates the explosive wire explosive (14) before the first detonating means (17) detonates the main explosive charge (16), the shaped explosive wire (12) The V-groove (13a) protrudes outward to form a notch (N) on the inner surface of the bullet shell (11). Therefore, when the main explosive charge (16) is subsequently detonated by the first detonation means (17), stress is concentrated around the notch (N) of the shell (11), so that the shell (11) It is easy to break as the boundary.

On the other hand, when detonating the main explosive (16) in the first detonation means (17) without detonating the explosive wire charge (14) in the second detonation means (18), the shell (11) Since the main explosive charge (16) is detonated without the above-mentioned notch (N) being formed in the A bullet shell (11) can be broken into fragments.

In this way, there are cases where the explosive wire explosive (14) is detonated by the second detonating means (18) before detonating the main explosive charge (16) by the first detonating means (17) and cases where it is not detonated. Since the shape of the fragments after the bullet shell (11) breaks is different, the explosive wire explosive (14) is detonated by the second detonator (18) before the main detonator (16) is detonated by the first detonator (17). ) The shape of the fragments after the bullet shell (11) ruptures can be selected depending on whether or not to detonate the shell (11).

In a second aspect, in the first aspect, the shell (11) has a cylindrical main body (11a), and the shaped explosive wire (12) is wound in a spiral manner. It is characterized in that it is disposed at the outer peripheral end of the main body (11a).

In the second embodiment, the shaped explosive wire (12) extends in the circumferential direction of the main body (11a) inside the main body (11a) of the shell (11), so that the explosive wire can be used by the second detonating means (18). By detonating the main explosive (16) in the first detonating means (17) after the explosive charge (14) has been detonated, the main body (11a) of the shell (11) can be ruptured at the intended location in the axial direction. .

In a third aspect, in the first or second aspect, a plurality of the shaped explosive wires (12) are provided, and the second detonation means (18) is provided for each shaped explosive wire (12). It is characterized by

In the third aspect, among the plurality of second detonation means (18), all the second detonation means (18) are made to detonate, or some of the second detonation means (18) are made to detonate. The shape and size of the fragments after the bullet shell (11) is ruptured can be selected by.

A fourth aspect is that in any one of the first to third aspects, a buffer material (15) is interposed between the main explosive (16) and the shaped explosive wire (12). Features.

In the fourth aspect, since the buffer material (15) is interposed between the main explosive (16) and the shaped explosive wire (12), the explosive wire explosive (14) of the shaped explosive wire (12) The explosion of the main explosive (16) is not triggered.

FIG. 1 is a schematic cross-sectional view of a warhead according to Embodiment 1. FIG. 2 is an external view of a missile equipped with a warhead according to the first embodiment. FIG. 3 is an enlarged view of section III in FIG. FIG. 4 is a perspective view of a shaped explosive wire. FIG. 5 is a flowchart illustrating the processing operation of the detonation controller. FIG. 6 is a diagram corresponding to FIG. 1 of the second embodiment. FIG. 7 is a diagram corresponding to FIG. 5 of the second embodiment.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Note that the embodiments and modifications described below are essentially preferable examples, and are not intended to limit the scope of the present invention, its applications, or its uses.

《Embodiment 1》
FIG. 1 shows a warhead (10) according to Embodiment 1 of the present invention. This warhead (10) is mounted on a missile (1) as shown in Figure 2. This missile (1) is equipped with a sensor (2) for target identification. The sensor (2) includes, for example, an image sensor, an acoustic sensor, a vibration sensor, etc., and outputs a signal necessary to detect the target and identify its type. Hereinafter, the rear of the missile (1) will be referred to as the "rear", and the front (travel direction) of the missile (1) will be referred to as the "front".

The warhead (10) includes a generally cylindrical shell (11). The bullet shell (11) has a bottomed cylindrical main body (11a) that is released rearward, and is attached to the main body (11a) from the rear so as to close the release side of the main body (11a), and is released forward. The mounting portion (11b) has a substantially cylindrical shape with a bottom. A male threaded portion (not shown) is provided on the outer peripheral surface of the released end of the main body (11a), and a female threaded portion (not shown) is provided on the inner peripheral surface of the released end of the mounting portion (11b). ) is provided. The main body part (11a) and the mounting part (11b) are integrally assembled by screwing and fastening the male threaded part of the main body part (11a) to the female threaded part of the mounting part (11b). Note that the method of assembling the main body portion (11a) and the attachment portion (11b) is not limited to this.

As shown in FIGS. 3 and 4, a long shaped explosive wire (12) is spirally wound multiple times around the inner outer peripheral end of the main body (11a) of the bullet shell (11). It is placed in a state that The shaped explosive wire (12) consists of a long metal container (13) with a V-groove (13a) formed on its surface, and an explosive wire charge (14) housed in the container (13). It has A pure metal such as aluminum or copper is used as the metal constituting the container (13). Further, the radial width W of the shaped explosive wire (12) is set shorter than the thickness T1 of the peripheral wall of the main body (11a) of the bullet shell (11), for example, set to about 1/2 of the thickness T1. be done. The container (13) has its V-groove (13a) facing the inner surface of the main body (11a) over the entire circumference. The outer circumferential surface of the container (13), that is, the V-groove (13a) forming surface, and the inner surface of the bullet shell (11) are in contact with each other or have a small gap therebetween. The shaped explosive wire (12) is LSC (Linear Shaped Charge).

Inside the shaped explosive wire (12), a cylindrical sheet-like buffer material (15) with both ends open and parallel to the inner circumferential surface of the main body (11a) is placed along the axis of the main body (11a). They are arranged in all directions. The cushioning material (15) is made of resin or rubber. The entire interior of the buffer material (15) is filled with the main explosive charge (16). The thickness T2 of the buffer material (15) is set to be shorter than the radial width W of the shaped explosive wire (12).

Inside the mounting part (11b), there is a first detonator (17) as a first detonator for detonating the main explosive charge (16), and a second detonator as a second detonator for detonating the explosive wire explosive (14). Contains two detonators (18). The first detonator (17) and the second detonator (18) each include an electric detonator or the like containing a built-in detonator or the like. The second detonator (18) is capable of detonating the explosive wire charge (14) before the first detonator (17) detonates the main explosive charge (16). The arrangement of the first detonator (17) and the second detonator (18) is not limited to the arrangement illustrated in FIG. 1.

The first detonator (17) and the second detonator (18) are connected to the detonator controller (3) shown in FIG. 2. The detonation controller (3) is built into the missile (1) and is adapted to receive the output signal of the sensor (2).

The processing operation of the detonation controller (3) will be explained in detail with reference to FIG. 5. In the first step S101, the detonation controller (3) estimates the vulnerability of the target based on the output signal of the sensor (2). Vulnerability is estimated based on, for example, the color, size, etc. of the target. In S102, the detonation controller (3) determines whether or not it is necessary to adjust the fragment size of the bullet shell (11) based on the vulnerability estimated in S101. If the target is more fragile than the predetermined standard, it is determined that the fragment size of the bullet shell (11) needs to be adjusted, and if the target is less fragile than the predetermined standard, the fragment size of the bullet shell (11) is determined to be adjusted. It is determined that there is no need to adjust the size of the fragments. If the size of the fragments of the bullet shell (11) does not need to be adjusted, the process proceeds to S103, whereas if the size of the fragments of the bullet shell (11) needs to be adjusted, the process proceeds to S104.

In S103, the detonation controller (3) causes the first detonator (17) to detonate the main explosive (16). This allows the bullet shell (11) to be fractured into randomly sized fragments by the impact pressure of the detonation of the main explosive charge (16) without adjusting the fragment size.

In S104, the detonation controller (3) causes the second detonator (18) to detonate the explosive wire charge (14). As a result, the V-groove (13a) of the shaped explosive wire (12) becomes a metal jet, jumps out to the outer circumferential side (in the direction indicated by arrow X in Fig. 3), and extends spirally in the circumferential direction on the inner surface of the shell (11). A notch (N) is formed so as to be recessed outward. In FIG. 3, the notch (N) is indicated by a chain double-dashed line. At this time, since the buffer material (15) is interposed between the main explosive charge (16) and the shaped explosive wire (12), the explosion of the explosive wire explosive charge (14) of the shaped explosive wire (12) The explosion of the main explosive (16) is not triggered. After that, the detonation controller (3) advances the process to S103.

If the operation of S103 is executed after the operation of S104 is executed, the main explosive charge (16) is detonated with the notch (N) formed on the inner surface of the shell (11). At this time, since stress is concentrated around the notch (N), the bullet shell (11) is likely to fracture with the notch (N) as a boundary. Therefore, compared to the case where the operation of S103 is performed without performing the operation of S104, the bullet shell (11) is fractured to the intended size in the axial direction.

On the other hand, when performing the operation of S103 without performing the operation of S104, the main explosive charge (16) is Detonate. Therefore, the bullet shell (11) breaks into fragments of random sizes compared to the case where the operation of S103 is performed after the operation of S104.

In this way, there are cases where the explosive wire charge (14) is detonated by the second detonator (18) before detonation of the main explosive charge (16) by the first detonator (17), and cases where the explosive wire charge (14) is not detonated. Since the shape of the fragments after the bullet shell (11) breaks is different, the explosive wire explosive (14) is detonated by the second detonator (18) before the main explosive charge (16) is detonated by the first detonator (17). ) The shape of the fragments after the bullet shell (11) ruptures can be selected depending on whether or not to detonate the shell (11).

According to the first embodiment, since only one spiral shaped explosive wire (12) is provided, compared to the case where a plurality of annular shaped explosive wires are provided, the shaped explosive wire (12) is provided inside the shell (11). ), and the number of parts can be reduced. Furthermore, since it is not necessary to provide a plurality of second detonators for detonating each shaped explosive wire, the structure of the warhead (10) can be simplified.

Further, since the shape of the fragments after the bullet shell (11) is broken can be selected depending on the vulnerability of the target, the shape of the fragments after the bullet shell (11) is broken can be made into a shape suitable for the target.

《Embodiment 2》
FIG. 6 shows a warhead (10) according to Embodiment 2 of the present invention. In the second embodiment, two shaped explosive wires (12) are provided. Both shaped explosive wires (12) are spirally arranged parallel to each other so as to be adjacent to each other in the axial direction over the entire length. A second detonator (18) is also provided for each shaped explosive wire (12).

Further, as shown in FIG. 7, when the detonation controller (3) determines in S102 that the fragment size needs to be adjusted, the process proceeds to S201. Then, in S201, it is determined whether it is necessary to subdivide the fragments. If the fragments need to be fragmented, the process proceeds to S202, whereas if the fragments do not need to be fragmented, the process proceeds to S203. Here, it is determined whether fragmentation of the fragments is necessary or not based on the vulnerability of the target estimated in S101.

In S202, both second detonators (18) are caused to detonate the explosive wire charge (14). As a result, the V-grooves (13a) of both shaped explosive wires (12) protrude outward to form a notch (N) extending spirally in the circumferential direction on the inner surface of the bullet shell (11). After that, the process advances to S103.

On the other hand, in S203, the explosive wire explosive (14) is detonated in only one of the second detonators (18). As a result, the V-groove (13a) of one shaped explosive wire (12) protrudes outward to form a notch (N) extending spirally in the circumferential direction on the inner surface of the bullet shell (11). After that, the process advances to S103.

When both the second detonators (18) are detonated in S202, the notch (N) is larger than the shell (11) compared to the case where only one of the second detonators (18) is detonated in S203. Since the bullet shell (11) is formed more densely in the axial direction, the bullet shell (11) can be broken more finely in the axial direction. In this way, the size of the fragments after the shell (11) ruptures depends on whether both second detonators (18) are detonated or only one of the second detonators (18) is detonated. You can choose.

Since the other configurations and operations are the same as those in the first embodiment, the same configurations and operations are given the same reference numerals and detailed explanation thereof will be omitted.

In addition, in the above-mentioned Embodiments 1 and 2, the main body (11a) of the bullet shell (11) was shaped to be released only backwards, but the main body (11a) was shaped to be released forward and backward, and the main body (11a) A liner that is ejected forward with the explosion of the main explosive charge (16) may be provided in the open part on the front side of the main explosive charge (16).

Further, in the first and second embodiments, the shaped explosive wire (12) has a spiral shape, but it may have another shape such as an annular shape or a linear shape.

Furthermore, in the first and second embodiments described above, the determinations in S102 and S201 were made based on the vulnerability of the target. However, this may be done based on other attributes of the target or the state of the shell (11), such as whether or not the shell (11) has been destroyed. Alternatively, the missile (1) may be provided with a receiving means for wirelessly receiving a user's command, and the determinations in S102 and S201 may be made based on the command received by the receiving means.

In addition, in the second embodiment, two shaped explosive wires (12) are provided on the warhead (10), but a plurality of three or more shaped explosive wires are provided, and a second detonator (18) is provided for each shaped explosive wire (12). It's okay.

As described above, the present invention is useful for warheads that include a bullet shell and an explosive charge filled inside the bullet shell.

10 Warhead
11 Bullet shell
11a Main body 12 Molded explosive wire
13 Container
13a V groove
14 Explosive wire explosives
15 Cushioning material
16 Main explosive
17 First detonator (first detonator)
18 Second detonator (second detonator)

Claims (5)

A warhead comprising a bullet shell (11), a main explosive charge (16) filled inside the shell (11), and a first detonation means (17) for detonating the main explosive charge (16), ,
It has a metal elongated container (13) with a V-groove (13a) formed on its surface, and an explosive wire explosive (14) accommodated in the container (13), and the V-groove (13a) a shaped explosive wire (12) disposed inside the shell (11) with (13a) facing the inner surface of the shell (11);
a second detonating means (18) capable of detonating the explosive wire explosive (14) of the shaped explosive wire (12) before detonating the main explosive (16) by the first detonating means (17); Equipped with
By detonating the explosive wire explosive (14) of the shaped explosive wire (12) by the second detonating means (18), a notch (N) is formed on the inner surface of the shell (11), and then the The shell (11) can be ruptured by detonating the main explosive (16) by the first detonation means (17) with a notch (N) formed on the inner surface of the shell (11). A warhead comprising : The warhead according to claim 1,
The bullet shell (11) has a cylindrical main body (11a),
The warhead is characterized in that the shaped explosive wire (12) is arranged in a spirally wound state at the outer peripheral end of the main body (11a). The warhead according to claim 1 or 2,
A plurality of the shaped explosive wires (12) are provided,
A warhead characterized in that the second detonator (18) is provided for each shaped explosive wire (12). The warhead according to any one of claims 1 to 3,
A warhead characterized in that a buffer material (15) is interposed between the main explosive (16) and the shaped explosive wire (12). The warhead according to any one of claims 1 to 4,
Before the first detonation means (17) detonates the main explosive (16), the second detonation means (18) detonates the explosive wire explosive (14) of the shaped explosive wire (12). The warhead further comprises a detonation controller (3) that determines whether the warhead is a target or not based on the attributes of the target or the state of the shell (11).

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