JPH0629721Y2 - Flying body for impact test equipment etc. - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is a flying object for an impact test device, and more specifically,
For example, the present invention relates to improvement of a flying object used in an impact test device or the like in which a flying object is caused to fly at high speed by the combustion force of explosive and collides with a sample such as a material.

(Prior Art) Generally, there is an impact test device for materials and the like as shown in FIG.

That is, the explosive chamber 7a filled with the explosive 8a, and the explosive chamber 7a
A projectile launcher 4a consisting of a projectile installation chamber 6a provided in front of the vehicle through a diaphragm 9a, and the projectile installation chamber
The impact test apparatus 22 is composed of a high-pressure tube 10a connected in communication with 6a and a sample installation table 16a provided with a sample 17a in front of the high-pressure tube 10a, and is loaded in the flying object installation chamber 6a. Using the combustion force generated by the combustion of the explosive body 5a filled in the explosive chamber 7a, the flying body 5a is rapidly propelled into the high-pressure pipe 10a, the sample installed in front It collides with 17a.

Thus, the flying object 5a conventionally used in the above-mentioned impact test device.
Used a substantially truncated cone shape made of synthetic resin.

(Problems to be solved by the invention) However, in the impact test device 22, in order to fly the projectile 5a at high speed, the amount of explosive 8a filled in the explosive chamber 7a is increased, The means for increasing the combustion force generated by the combustion of the explosive 8a has been adopted.

However, according to this means, since the flying body 5a is rapidly accelerated due to the increase in the combustion force, a very large force is applied to the flying body 5a, which causes a problem that the flying body 5a is damaged. Therefore, since the amount of the explosive 8a must be limited to the extent that the projectile 5a is not damaged, the flying speed of the projectile 5a is limited.

As a means for solving this problem, for example, changing the material and shape of the flying object 5a was attempted, but in any case, the damage of the flying object 5a could not be avoided.

On the other hand, an impact test device 23 shown in FIG. 5 was devised as a solution to the above problems by improving the impact test device.

The impact test device 23 is the high pressure pipe 10a of the impact test device 22.
Helium gas 20 is injected into the interior of the high-pressure pipe 10a, and the inner diameter of the tip of the high-pressure pipe 10a is narrowed, and a launch pipe 19 is inserted through the diaphragm 18.
Are connected.

That is, the flying force is generated by the combustion force of the combustion of the explosive 8a.
5a is flown into the high pressure pipe 10a to compress the helium gas 20 in the high pressure pipe 10a, the diaphragm 18 is breached, and the helium gas 20 is ejected into the firing pipe 19 to cause the firing. This is performed by accelerating a flying object 21 loaded in the tube 19 to cause it to fly and colliding it with the sample 16a.

However, in the impact test device 23,
Since the vehicle is accelerated from a stationary state, the flying speed of the flying body 21 is limited, and the structure of the device itself is complicated, which results in an increase in manufacturing cost.

As a result, in the above-mentioned conventional impact test device,
Since the flying speed of the flying object is limited, there is a problem that only an impact test can be performed within a certain range.

Therefore, the present invention has been devised to solve the above problems, and its purpose is to provide a flying object that can fly at high speed and expand the range of application of impact tests and the like. is there.

(Means for Solving Problems) The present invention has been made to solve such an object, and the gist of the configuration of a flying object for an impact test device or the like according to the present invention is the flying object installation room. A projectile loaded into the projectile installation chamber 6 such as an impact test device, which is composed of 6 and an explosive chamber 7 that is provided in communication with the projectile installation chamber 6 behind the projectile. The main body 1 is filled with explosives 2, and a diaphragm 3 is provided behind the explosives 2 at the rear of the projectile main body 1.
Is provided.

(Operation) Therefore, in the projectile for an impact test device or the like characterized by the above-mentioned structure, the diaphragm 3 is provided at the rear of the projectile body 1 behind the explosive 2 filled in the projectile body 1. Therefore, the explosive 2 does not burn at the same time as the explosive 8 in the explosive chamber 7 of the projectile installation room 6, but the temperature of the diaphragm 3 is raised by the combustion of the explosive 8 in the explosive chamber 7, and the temperature rises. As a result, the explosive 2 in the flying body 1 is burned.

That is, while the projectile body 1 is accelerated and flies by the combustion force generated when the explosive 8 in the explosive chamber 7 provided in the projectile launching device 4 is burnt, the projectile body 1 is further driven by the combustion force. The temperature of the diaphragm 3 provided at the rear part of the vehicle is raised, and the temperature rise causes the explosive 2 in the projectile body 1 to be ignited and burned. The combustion force of the explosive 2 causes the diaphragm 3 to be broken and The flying body body 1 is further accelerated by the combustion force.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a flying body main body made of metallized ceramics, and a hollow portion 1a is formed on the rear side of the flying body main body 1. Reference numeral 2 denotes a black powder filled in the hollow portion 1a of the projectile body 1. Reference numeral 3 denotes a diaphragm made of a synthetic resin having a substantially truncated cone shape. An adhesive material is applied to the outer peripheral surface of the diaphragm 3 so as to enclose the explosive 2 in the rear portion of the hollow portion 1a of the projectile body 1 ( It is fitted and adhered to the rear portion of the flying body 1 in the flying direction.

The flying body for impact test and the like of the present embodiment has the above-mentioned structure, and a usage example thereof will be described below.

FIG. 2 shows a projectile launching device 4, a high-pressure tube 10, and a sample table.
An impact test device for materials such as 16 is shown. First, the projectile 5 is loaded in the projectile installation chamber 6 formed in the projectile launcher 4 with the diaphragm 3 side facing backward. Then, the ignition ball 11 to which the squib 14 is attached is inserted into the rear end of the explosive chamber 7, and the black explosive chamber 7 is filled with the black explosive 8 as shown in FIG. After attaching the thin plate diaphragm 9 made of stainless steel as shown, the explosive chamber 7 is inserted behind the projectile installation chamber 6. Then, the opening / closing door 13 and the tail plug 12 are attached to the projectile launching apparatus main body 15. The other end of the squib 14 is the hollow portion 12a of the tail plug 12.
Have been out through.

Next, when the other end of the squib 14 is ignited, the ignition ball 11
The explosive 8 in the explosive chamber 7 is burned via the. The combustion force generated thereby breaks the diaphragm 9 provided at the tip of the explosive chamber 7, and the projectile body 1 is accelerated and fired forward.

The flying body 1 that flies in this manner is the flying body 1
Since the explosive 2 is filled inside and the diaphragm 3 is provided behind the explosive 2 at the rear portion of the projectile body 1,
The combustion force causes the temperature of the diaphragm 3 to rise, which causes the explosive powder 2 in the projectile body 1 to overwhelm, and the explosive powder 2
The diaphragm 3 is broken by the combustion force of
The flying body main body 1 is accelerated by the combustion force.

Therefore, the propellant body 1 is driven by the combustion force generated by burning the explosive 8 in the explosive chamber 7 of the projectile launcher 4 and the burning force generated by burning the explosive 2 in the propellant body 1. Is accelerated in stages to further increase the flight speed and fly in the high-pressure tube 10 connected to the front of the projectile launching apparatus main body 15 and collide with the sample 17 installed in front of the high-pressure tube 10 17 impact tests can be performed.

Although the flying body main body 1 made of the metallized ceramic is used in the above-mentioned embodiment, the material of the flying body main body 1 is not limited to this.

Further, in the embodiment, the hollow portion of the flying body 1 is
Black powder was used as the powder 2 to be filled in 1a, but the type of powder does not matter.

Further, in the above embodiment, the diaphragm 3 attached to the rear portion of the flying body 1 is made of synthetic resin, but the material of the diaphragm 3 is not limited to this. Further, the means for attaching the diaphragm 3 to the flying body 1 is not limited. Further, the thickness of the diaphragm 3 does not matter, and the thickness of the diaphragm 3 may be adjusted to an arbitrary thickness according to the type of the test object and the purpose of the impact test and the speed of the flying object may be adjusted.

Further, the flying object according to the present invention is mainly used for an impact test device, but its use is not limited to this, and it can be used, for example, for perforating a structure. , Its specific use does not matter.

(Effect of the Invention) As described above, in the projectile for the impact test device and the like according to the present invention, the main body of the projectile is filled with the explosive, and the diaphragm is provided at the rear portion of the main body of the projectile. Therefore, while the propellant body is accelerated and flies by the combustion force generated when the explosive powder in the explosive chamber of the projectile launcher is burned, the combustion force is further provided on the rear part of the propellant body. The temperature of the generated diaphragm rises, the explosive in the main body of the flying vehicle is ignited, the combustion force of the explosive destroys the diaphragm, and the combustion force further accelerates the flying main body. Will be done,
Therefore, a particularly remarkable effect that the flying speed of the flying body can be further increased as compared with the conventional case has been achieved.

As a result, the unique effect that the applicable range of the flying object for this kind of impact test device or the like is dramatically expanded is obtained.

[Brief description of drawings]

1 to 3 show an embodiment of a flying object for impact test or the like according to the present invention, FIG. 1 is a sectional view of the flying object, FIG. 2 is an explanatory view showing a usage state of the flying object, FIG. 3 shows a diaphragm attached to the tip of the explosive chamber that is inserted into the projectile body of the projectile. FIG. 3 (a) is a front view and (b) is a sectional view taken along line XX. FIG. 4 is a schematic explanatory view showing a conventional example. FIG. 5 is a schematic explanatory view showing another conventional example. 1 ... Flying body 2 ... Explosive powder 3 ... Diaphragm

Claims (1)

[Scope of utility model registration request] 1. A projectile installation room 6 such as an impact test device comprising a projectile installation room 6 and an explosive chamber 7 provided in communication with the projectile installation room 6 at the rear of the projectile installation room 6 so that it can be loaded. An impact test device, which is a projectile, wherein the projectile main body 1 is filled with explosive 2 and a diaphragm 3 is provided behind the explosive 2 at the rear of the projectile main body 1 and the like. For flying.