JPH0448200A - Forward directivity charge warhead - Google Patents

Abstract

PURPOSE:To obtain a forward directivity charge warhead, scattering the fragments thereof forward while having a cylindrical configuration and having a simple structure, by a constitution wherein the warhead is provided with a recess, enclosed by the outer surface of a metallic case, at the front surface in the flying direction of the warhead. CONSTITUTION:The metallic case of a forward directivity charge warhead A is provided with a recessed space 3, enclosed by a metallic case 1a, at the forward surface of the flying direction of the warhead and the material is different according to the using purpose thereof. When jet or the fragments of large mass are to be produced, the material is preferably copper or soft carbon steel and when a multitude of fragments of small mass are to be produced, the material is preferably hard carbon steel. The metallic case is scattered as fragments by the detonation of explosive 2 initiated by a safety initiating device 4. In this case, an outside metallic case scatters toward side periphery but the part 1b of the metallic case at the front surface of the flying direction of the warhead scatters forward substantially and the part 1a of the metallic case in a recess is scattered so as to be concentrated forwardly without being scattered sidewards. As a result, effective damage can be given by the fragments of the warhead with a simple structure.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention particularly relates to a forward-directing warhead for missiles that has a higher fragmentation effect on targets in the flight direction of the warhead.

<Prior art> Warheads used in missiles, etc. are limited to cylindrical shapes because it is necessary to place a homing part at the front of the warhead.9 With a cylindrical shape, most of the fragments generated are in the direction of flight. It is extremely difficult to direct the fragments in the direction of flight, that is, in the forward direction, as they scatter laterally.

Further, with a bell-shaped warhead used in a normal artillery shell, fragments are scattered forward over a wide range to some extent, but it is difficult to arrange a homing section at the front of the warhead.

However, in practical terms, there is a demand for warheads that can destroy targets located in the flight direction (forward).

A warhead intended to direct fragments forward is the U.S. patented tube 3.
．． No. 974.771.

FIG. 2 is a sectional view showing an example of the structure of this warhead. In the warhead shown in the drawing, fragments 11 between the fixed plate 13 and the explosive charge 12 are scattered forward by the detonation of the explosive charge 12 detonated by the detonator 15. However, there is a large wasted space between the fixed plate 13 and the outer shell 14, and the structure is extremely complicated.

However, there is a demand for a warhead that has a cylindrical shape but scatters fragments forward, does not take up wasted space, and has a simple structure, but to date, there is no known warhead that meets this requirement. Not yet.

<Problem to be solved by the invention> In order to direct the fragments around the side of the cylindrical warhead forward,
Unless all the angles of the debris around the sides are tilted forward, the debris will not fly forward. Even if a warhead with angled fragments is detonated in a step-like manner, the fragments will scatter to the sides as much as a normal cylindrical warhead. Therefore, in order to tilt all of the surrounding fragments forward, the warhead becomes close to a conical shape, which is different from the requirement for a cylindrical shape. On the other hand, putting a conical warhead in a cylindrical container would meet the requirements, but would require a large amount of wasted space and would complicate the structure itself.

In other words, it is currently an extremely difficult technology to create a warhead that has a cylindrical shape and that scatters fragments forward without wasted space and is simple.

<Means for Solving the Problems> As a result of long-term research, the present inventors have found that by optimizing the shape of the metal case on the side of the warhead flight direction, fragments can be scattered forward. Based on this knowledge, we invented a forward-directed warhead that has a cylindrical shape, scatters fragments forward, has no wasted space, and has a simple structure.

That is, the present invention provides a forward-directed warhead comprising a metal case, an explosive charge and a detonator stored in the case, and having a recessed portion surrounded by the outer surface of the metal case on the front surface in the direction of flight. Regarding.

Next, a description will be given based on FIG. 1 showing a longitudinal cross-sectional view of an example of a preferred configuration of the forward-directing warhead of the present invention.

In the figure, A is a forward-directed warhead of the present invention, l is a metal case, and 2 is an explosive housed in the metal case. The arrow indicates the flight direction of this warhead, and the metal case 1 has a recessed space 3 surrounded by the metal case 1a on the front surface in the flight direction. 4 is a safety detonator.

When the explosive charge 2 detonates, the metal case becomes fragmented, but the fragments from the metal case 1a in the concave part do not scatter to the sides, but scatter forward, and most of the part 1b also flies forward. I will do it. Furthermore, a safety detonator is provided following the recess 3, and there are no unnecessary parts in the structure.

Also, by making the metal case la have an angle with respect to the center axis of the warhead, the destructive effect on the front bar will be different.

In other words, when the angle is between 0 degrees and 5 degrees, the speed of the fragments is slow (
However, the scattering range of the inner debris becomes larger. When the angle is between 5 degrees and 45 degrees, the effect of the jet generated by the collision of the fragments on the central axis increases, and the speed of the fragments increases, but the scattering range of the inner fragments becomes narrower. Furthermore, if the angle is greater than 45 degrees, there will be more wasted space, but the amount of debris inside will also be greater.

The material of the metal case varies depending on the purpose of use. If you are trying to generate jets or fragments with a large mass, it is better to use a soft material, such as copper or soft carbon steel, and if you are trying to generate many fragments with a small mass, it is better to use a hard material, such as hard material. Preferably, carbon steel is used.

As an explosive, if you want to increase the fragmentation velocity, use a high explosive velocity, such as cyclotetramethylenetetranitramine (H
MX) or cyclotrimethylenetrinitramine (RD
It is desirable to use explosives whose main components are secondary explosives such as It doesn't matter if it's explosives.

(Function) Due to the detonation of the explosive charge 2 detonated by the safety detonator 4,
The metal case becomes fragments and scatters. In this case, the outer metal case is scattered around the sides, but the part of the metal case 1b on the front side in the flight direction is mostly scattered forward, and the part of the metal case 1a inside the recess is not scattered sideways ( Concentrate and scatter in front.

<Effects of the Invention> By using the forward-directed warhead of the present invention, even with a normal missile warhead that has a homing section at the front of the warhead, damage caused by fragments is more effective against targets in the front than with conventional warheads. can be given.

<Embodiment> Metal case 1a in recess 3 with the warhead of the present invention shown in FIG.
We manufactured products with various angles. Note that 345C carbon steel was used as the material for the metal case.

Next, let's talk about the size of the warhead.

The outer metal case has an outer diameter of 89), an inner diameter of 80 mm, and a length of 1.
20mm.

The flight side front surface 1b has a thickness of 4.5 mm, the inner diameter of the base of the recess 3 is 13 mm, the outer diameter is 22 mm, and the depth of the recess space is 40 mm.

In the example, the angle of 1a with respect to the center axis of the warhead was changed. The explosive used was 80% HMX and the remainder was a polyurethane binder, and had an explosive speed of 8300 m/s.

This warhead is fixed horizontally in the center, and around it 3.
A 5s41 steel plate was placed all around (360°) at a distance of 5 m, and the range of fragments scattered when the warhead was detonated was measured.

The table shows the angle of la with respect to the center axis of the warhead and the measurement results of the scattering distribution.

(Unit: %) * Angle with respect to the center axis of the warhead (Oo is the front) Comparative example Exactly the same experiment was conducted with a normal cylindrical warhead (the size is substantially the same as the example), but the fragments were +60~-60
There was almost no scattering within this range.

Examples and comparative examples show that the forward directivity of the warhead of the present invention is superior to that of conventional warheads.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an example of a forward-directed warhead of the present invention. FIG. 2 is a cross-sectional view of a warhead intended for forward fragmentation as described in U.S. Pat. No. 3,974,771. In the figure, A: forward-directed warhead of the present invention, 1: metal case,
1a: Recessed metal case, 1b: Front metal case in flight direction, 2: Explosive charge, 3: Recessed space, 4: Safety detonator, 11
: Fragment, 12: Explosive charge, 13 fixed plate, 14: Outer shell, 15
:detonator. 1st Ward A 4q11 November 4. Qii:inow1ii1nl jL
'j! f 'p''; 1ζ 3 concave V

Claims (1)

[Claims] (1) A forward-directed warhead consisting of a metal case, an explosive charge and a detonator stored in the case, and having a recess surrounded by the outer surface of the metal case on the front surface in the direction of flight. (2) The forward-directing warhead according to claim 1, wherein the recessed metal case is at an angle of 0 to 45 degrees with respect to the central axis of the forward-directing warhead.