JP2671564B2 - Dual effect warhead - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a dual effect warhead capable of enhancing the effect of debris and blast in a warhead.

<Prior art> The fragment speed of a warhead basically depends on the explosive speed of the explosive charge contained in the warhead and the ratio of the explosive charge weight to the weight of the metal part to be debris. The only way to do this is to use a fast explosive charge or increase the explosive weight. Also, in order to increase the strength of the blast, there is no other way but to increase the explosive weight in the same manner or to use explosive with a great blast effect at the expense of the blast speed.

<Problems to be Solved by the Invention> Since the explosive velocity of explosives is uniquely determined by the performance of the explosive component that is the raw material of explosives, the fragment velocity of the warhead is naturally limited.

Further, in order to enhance the blast effect, it is necessary to add a component such as aluminum powder to the explosive charge, and in this case, the detonation speed decreases.

In other words, there is a limit to the speed of debris and the blast effect that can be achieved with a single explosive, and a new breakthrough technology is now desired.

<Means for Solving the Problems> Therefore, the present inventors have conducted research to meet the above-mentioned demand, that the purpose can be achieved by combining two kinds of explosives, specifically, for high explosive explosives, By combining low-explosion velocity or high-density explosive, or low-explosion high-density high-explosive than the explosive, the fragment velocity becomes higher and the blast effect becomes larger than a warhead having only high-explosive explosive. Based on this finding, we invented a dual-effect warhead with a higher fragment speed and a greater blast effect.

That is, the present invention comprises a metal case, a high-explosive explosive and a high-explosive explosive, a low-explosive explosive or high-density explosive, or a low-explosion and high-density explosive, lower than the high-explosive explosive, or high-density. Or, a low-explosion and high-density explosive is placed in contact with the metal case, and a high-explosion explosive is placed inside the explosive.
The present invention also relates to a dual effect warhead characterized by having a detonating means.

Next, a description will be given with reference to FIGS. 1, 2 and 3 showing vertical sectional views of a preferred structure of the dual effect warhead of the present invention.

In the drawings, A, B, and C are dual-effect warheads of the present invention, and the warheads are metal cases 2, 12, 22 and a hollow cylindrical low-explosive explosive 3 provided in contact with the inner wall of the metal case or A high-density explosive 13 or a low-explosion and high-density explosive 23, and a cylindrical high-explosive explosive 1, 11, 21 are used as boosters 4, 14, 24, detonators 5, 15 for the high-explosive explosive. , 25 are provided as shown.

The high-explosive explosive used in the present invention is, for example, an explosive mainly composed of a secondary explosive such as cyclotetramethylenetetranitramine (HMX) or cyclotrimethylenetrinitramine (RDX), or a low-explosive explosive or A high-density explosive or a low-explosion and high-density explosive consists of, for example, the same main component as described above, and the explosive having a different explosive velocity and density by changing the compounding ratio of the main component and the binder. An explosive having an exothermic agent such as aluminum powder added to its components, an explosive having an oxidizing agent such as ammonium perchlorate and aluminum powder, and an exothermic agent as a main component.

Of these combinations of explosives, the debris velocity is high and the blast pressure is high.
High explosive explosive charge of 0 m / s or more and ammonium perchlorate 40
It is a combination with an explosive containing more than 20% by weight of aluminum powder and more than 20% by weight.

When the explosive explodes, the metal case flies at high speed as debris, but in the case of a warhead using only one kind of explosive, the flying speed of this debris is almost proportional to the detonation speed of the explosive charged in the metal case.

However, in the case of the dual-effect warhead of the present invention, the detonation of the low-explosive explosive inscribed in the metal case progresses at the detonation speed of the high-explosive explosive inside the metal case, so that super detonation (explosive The detonation pressure that occurs is higher than the steady state detonation speed given by Chapmanjugae conditions), and the detonation pressure generated is not only the detonation pressure specific to the explosive charge but also the detonation pressure specific to the high explosive charge. As a result, the debris velocity will be faster than the warhead using only the high explosive explosive charge.

On the other hand, when a high-density explosive is applied to the explosive that is inscribed in the metal case, the high-density explosive has a high detonation rate due to the fact that the detonation proceeds at the detonation speed of the high-explosive explosive inside the high-explosive explosive. The detonation pressure is high (given by detonation pressure = density × detonation speed × detonation speed ÷ 4). As a result, the fragment velocity will be faster than that of a warhead using only the high-explosive explosive charge.

Further, when a low explosive velocity and high density explosive is applied to the explosive inscribed in the metal case, the above two effects are combined to further increase the detonation pressure. As a result, the debris velocity becomes faster than the warhead using only the high-explosive explosive charge.

In all of the above three cases, the blast effect is enhanced for the same reason.

Further, when the low explosive charge, high-density explosive or low-explosion, high-density explosive on the outside contains a component that generates a high temperature during detonation, such as aluminum powder, an incendiary effect can be expected.

In addition, if the outer low explosive charge, high-density explosive or low explosive-high density high explosive with low sensitivity to impact is applied, the sensitivity of the warhead itself will be reduced.

When increasing the fragment velocity of the warhead, the proper thickness is usually 20 mm or less so that the thickness of the explosive charge inscribed in the metal case is influenced by the speed at which the detonation of the high explosive charge inside the metal case progresses. Is. However, this is not the case when the effect of the blast is more important than the fragment speed.

The material of the metal case is determined according to the purpose of use of the warhead, and usually carbon steel, high elasticity steel or the like, which is good in the generation of fragments, is used.

The location where the detonator and the booster detonate the explosive charge may be the same whether the explosive charge at high detonation speed is in contact or the explosive charge at low detonation is in contact.

<Action> In the case of a warhead using only one kind of explosive, the metal case flies at high speed as debris due to the detonation of explosive, but the flying speed of this debris is approximately proportional to the detonation speed of the explosive charged in the metal case. Will be done.

On the other hand, when the dual effect warhead of the present invention is applied, an effect different from that of a warhead using only one kind of explosive appears due to the following action.

Boosters 4, 14, 24 detonated by detonators 5, 15, 25
High detonation explosives 1, 11, 21 and low detonation explosives 3, high density explosives 13, or low deceleration and high density explosives
23 starts the reaction. The outer metal case 2, 12, 22 is affected by the detonation of the high detonation explosive on the inside, resulting in a higher detonation pressure with a low detonation explosive charge, a high density explosive charge, or a low detonation speed and high density explosive charge. By the detonation of, it is scattered as a faster fragment than a warhead using only high explosive explosives,
At the same time, a more powerful blast is released to the outside.

<Effect of the Invention> By applying the dual effect warhead of the present invention, a stronger debris effect and a blast effect are exhibited as compared with a normal warhead using one type of explosive.

In addition, when the low explosive charge or high explosive charge or the low explosive and high density explosive on the outside contains a component such as aluminum powder that generates a high temperature upon detonation, an incendiary effect can be expected.

In addition, if a low explosive explosive or a high explosive explosive on the outside or a low explosive fast and high density explosive with a low sensitivity to impact is applied, the sensitivity of the warhead itself is lowered.

<Examples> Examples 1 to 6 The warheads of the present invention shown in FIGS. 1, 2, and 3 were manufactured using the explosive charge shown in Table 1. The explosive powder is manufactured by a usual slurry casting method. As a metal case, STKM
Outer diameter made of 17A carbon steel 89.1mm, inner diameter 80.3mm, length 120mm
The one in the shape of was used.

The prepared warhead was detonated and the average fragment velocity at a distance of 3 m was measured using a conventional foil type and the blast pressure at a distance of 3 m was measured using a conventional piezo pressure element. The measured value was obtained as a relative ratio when Comparative Example 1 was set to 1.00.

 Table 2 shows the results.

Comparative Examples 1 and 2 As shown in Table 1, a warhead was manufactured in the same manner as in the example, except that only the high-explosive explosive used in the example was filled in the same metal case as the example.

The same test as in the example was conducted on this warhead. still,
The measured value was determined as 1.00 in Comparative Example 1 and the relative ratio in Comparative Example 2.

 Table 2 shows the results.

Examples 7 and 8 In order to understand the effect of lowering the sensitivity, the samples shown in Table 3 were prepared and the sensitivity was measured by the card gap test method.
The measured value was obtained as a relative ratio when Comparative Example 1 was set to 1.00. Table 3 shows the results.

Next, the card gap test method will be described based on the apparatus shown in FIG.

In the figure, 41 is a detonator, 42 is pentolite (pentaerythritol tetranitrate 50: trinitrotoluene 5
0) and 43 are acrylic resin plates that are card gaps, 44 is a sample filled in a steel pipe 45, and 46 is an iron plate. Pentolite is 30mmφ × 30mm, acrylic resin plate is 50mm × 50mm thick
Use 5 mm or 10 mm.

The steel pipe has an outer diameter of 42.7 mm, a thickness of 3.5 mm, and a length of 50 mm.
In the sample, b is a high explosive charge and a is a low explosive velocity or high density or a low explosive velocity and high density explosive charge than the explosive charge. In the test, a pentolite is detonated by a detonator, and it is checked whether or not a sample explosive provided with a resin plate that is a card gap is detonated, and it is judged by the blast mark formed on the iron plate. The probability of starting a test by changing the gap length is 50%.
50% detonation gap length.

Comparative Example 3 Using the explosive shown in Table 3, that is, using the high explosive explosive, a sample was prepared according to the example, and the same test as that of the example was performed.

 Table 3 shows the results.

Table 2 shows that the warhead having the explosive charge of the present invention has larger fragment velocity and blast pressure than the warhead having a single explosive charge, and Table 3
Shows that, compared with a single explosive, the use of a plurality of explosives of the present invention has a short gap length, that is, it is difficult to detonate upon impact.

[Brief description of the drawings]

1, 2 and 3 are sectional views showing an example of the dual effect warhead of the present invention. FIG. 4 is a schematic diagram showing the card gap test method. In the figure, A, B, C; dual effect warhead of the present invention, 1, 11, 2
1; high detonation explosive, 2,12,22; metal case, 3; low detonation explosive, 13; high density explosive, 23; low detonation and high density explosive, 4,
14,24; booster, 5,15,25; detonator, 41; detonator, 42; pentrite, 43; acrylic resin plate, 44; explosive charge, 45; steel pipe, 46; iron plate.

Claims (3)

(57) [Claims] 1. A metal case, a high-explosive explosive and a low-explosive explosive lower than the explosive, wherein the low-explosive explosive is disposed in contact with the metal case, and the high-explosive explosive is inside the low-explosive explosive. A dual-effect warhead that is arranged and has a detonating means. 2. A metal case, a high-explosive explosive charge, and a higher-explosive explosive charge than the explosive charge, wherein the high-density explosive charge is disposed in contact with the metal case, and the high-explosive-velocity explosive charge is inside the high-density explosive charge. A dual-effect warhead that is arranged and has a detonating means. 3. A metal case, a high-explosive explosive, and a low-explosive and high-density explosive that is lower than the high-explosive explosive. The low-explosive and high-explosive explosive is disposed in contact with the metal case, and the high-explosive explosive is the low-explosive. A dual-effect warhead characterized by being placed inside a high-density explosive and having a detonating means.