JPH0578760B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention involves transporting explosives to the sky in front of a destination using a flying object, and then lowering the explosives onto a minefield while braking the object, where the explosives are released. This invention relates to a minefield disposal device that detonates landmines by detonating them.

[Prior Art] Conventionally, there are two types of such devices when viewed mainly from the above-mentioned braking system.

The first type is a type using a brake cable, such as the one disclosed in Japanese Patent Publication No. 48-35320, in which the front end of the cable is made by loading an explosive into a long bag-shaped cable body and is connected to a rocket. A brake cable is connected to the rear end of the rocket, and the terminal of the brake cable is moored near the rocket launch point. In this device, when the blast cable is towed by a rocket and transported to the sky above the destination point, the brake cable expands and applies the brakes, causing the blast cable to stall and descend together with the rocket.

Second, for example, the applicant's earlier application (Japanese Patent Application
59-8246), which uses the aerodynamic resistance of a parachute to perform braking, and this device will be briefly explained using FIGS. 3 and 4.

In Fig. 3, reference numeral 1 denotes a plurality of (12 in this case) explosive blocks, each of which has a cylindrical can 1a loaded with an explosive 1b and is also equipped with a detonator (not shown). ) are connected in series using connecting cables 2, and then abutted against each other and tightened with steel cables 3 to form an integral block linking body 4. 5 is a latch of the steel cable 3 fixed to the rearmost block, 6 is an L-shaped locking piece attached to the front end of the steel cable, 7 is a locking tool engaged with these locking pieces, and 8 is this locking piece. It is a connecting cable that connects the stopper and the most forward block, and when the stopper 7 is pulled forward, the latch 6 is released and the above-mentioned tightening is released. Reference numeral 9 denotes a parachute, which is normally folded, and its suspension string 10 is connected to the last block 1.

On the other hand, 20 is a rocket as the flying object, 21 is a body shell, 22 is a frontal part, and 23 is a body shell 21.
For example, there are four rocket motors attached to the mount, 24 is the tail, 25 is the rear cover, and the locking tool 7 and the front 2
2 are connected to each other by a connecting cable 11, and then the series of block connecting body 4 and folded parachute 9 is stored in the trunk shell 21, and the rear cover 25 is removed from the trunk shell using a gunpowder-type breaking bolt 26. It was concluded in 21.

This device works as follows.

The structure stored in the rocket 20 is transported to the sky in front of the minefield, and when the bolt 26 is broken here, the rear cover 25 is detached and the parachute 9 is released and opened. Therefore, this parachute pulls out the block connecting body 4 to the outside of the shell 21 using its hanging cord 10 and decelerates it, and then expands the connecting rope 11 to move the locking device 7 to the locking piece 6.
Since the block is pulled out from the block, the tightening of the connecting body is released and each block becomes free.

The stage in FIG. 4 shows the state at this time. After that, the rocket 20 continues to fly due to inertia, and the parachute 9 applies the brakes, so the connecting cables 2 are expanded one after another, and as shown in the stage in the figure, each block 1 is deployed in a chain while being indexed by the rocket 20. In this state, the aircraft descends while stalling. The stage indicates the state of this developed system just before landing, and the stage indicates the state where this system has landed on the minefield M, respectively. When each block 1 lands on the ground, they are detonated all at once to detonate the landmine, and the device that stores the explosive blocks in a flying object and flies it is the above-mentioned explosive cable towing type. It can carry a relatively large amount of explosives.

〔problem〕

By the way, as explained in FIGS. 3 and 4 above, the system in which the blocks are deployed by the aerodynamic resistance of the parachute and braking is applied to them is as shown in the stage of FIG. There was a problem in that the landing distance l was narrowed to the extent that it was at the rear, making it impossible to obtain the desired effective deployment length. The reason for this is as follows.

Now, looking at the stage in the figure, if t is the traction force acting on the last block and g is the gravity acting on that block, then the aerodynamic drag force of the parachute 9 is in the direction of the resultant force f of these t and g. The hanging cord 10 stands up in this direction. In other words, looking at this in reverse, as a result of the aerodynamic resistance of the parachute 9 being divided into the directions of the traction force t and the gravity g, the braking effect on the deployed system is reduced, and the resulting division provides resistance to the descent of the rear part of the system. I will do it. Therefore, as shown in the step, the system gradually curves upward and lands in order from the preceding block, so the landing intervals are uneven as in the step, and in this case, the connecting cable Since block 2 becomes loose, block 1 is allowed to rebound freely, and as a result, the alignment state is also disturbed.

In that case, it seems possible to solve the above problem by using the brake cable instead of the parachute, but in this case, another problem arises in that the alignment of the blocks is disturbed during the descent. .

In other words, when using the brake cable system, sudden braking is applied when the brake cable is stretched out, but each block is loaded with a large amount of explosives, which increases the weight of each block, and the weight of each block increases. In addition, since such blocks are connected by flexible connecting cables, when sudden braking is applied, the braking cables or these connecting cables expand and contract, giving irregular behavior to the flying object and each block.

Therefore, the object of the present invention is to develop a series of explosive blocks in a string and descend by applying aerodynamic braking from a parachute to a system of a flying object and a series of explosive blocks connected thereto.
The goal is to deploy each explosive block in a straight line as much as possible and land them at approximately the same time.

[Means of invention]

The means of the present invention for achieving the above object includes a structure consisting of a connecting body 4 in which a plurality of explosive blocks 1 are connected in series by connecting cables 2, and a parachute 9 connected to the rear end of the connecting body. The flying object 20 is stored in a flying object 20, the flying object 20 is flown over the minefield, and the parachute 9 is released above the minefield in front of the minefield, and the connected body 4 is deployed in a string shape, and then it descends onto the target line of the minefield. In a minefield disposal device that detonates the descending explosive block 1 to detonate the landmine, the tow line 30 has a tow line 30 approximately corresponding to the range of the projectile.
is passed through a hole 9a provided in the center of the umbrella portion of the parachute 9, and one end of the towing cable 30 is connected to the tail end of the connecting body 4, and the other end is moored to the ground surface. It is characterized by this.

With this configuration, when the minefield processing device is launched, the flying object 20 spreads while flying while indexing the tow rope 30. When the parachute is released, the parachute 9 is pulled out and deployed by the tow cable 30 passed through the air hole 9a in the center of the umbrella part, and the parachute 9 is opened without delay, and the tow cable passed through the air hole 9a in the center of the umbrella part is pulled out and deployed. 3
Parachute 9 whose motion direction is restrained by 0
The umbrella is opened in a manner that applies aerodynamic drag force in the opposite direction to the direction of travel to apply braking.

The movement of the projectile 20 and the braking force of the parachute 9, whose direction of motion is restrained by the towing cable 30, extend and tension the connecting cable 2, and deploy the series-connected explosive blocks 1 in a cascade, thereby causing the towing. Since one end of the cable 30 is fixed at the mooring position, the flying object 2
If 0 falls, each explosive block 1 will land at almost the same time while being deployed in a chain.
The towing cable 30 is laid in a straight line between the fallen flying object 20 and the mooring position of the tow cable 30.

〔Example〕

FIG. 1 shows one embodiment of the present invention.
Portions with the same reference numerals as those in the figures are the same as those of the prior art.

Reference numeral 30 is the towing cable, which is made of a strong cable such as a nylon rope, and its entire length is set to approximately correspond to the range of the flying object 20. In this embodiment, the length is set according to the flight distance of the last block 1. Tow cable 30
is divided into two parts 30a and 30b, and after the front end of the tow cable 30a is passed through the air hole 9a in the center of the umbrella part of the parachute 9, it is attached to the hook 12 of the rearmost block 1 together with the suspension string 10 of this parachute.
The rear end of the cable 30a and the front end of the tow cable 30b are tied to eye hooks 32 and 33 fixed to the rear lid 25, respectively. Then, the parachute 9 is folded and housed in the fuselage shell 21 together with the tow cable 30a, and the rear cover 25 is fastened using the explosive-type breaking bolt 26 in the same manner as described above. In addition, the tow rope 30b is folded back in a meandering manner to make it compact, stored in a container and stored 34 near the launch point, and a chichi ring 31 formed at the rear end of the tow rope is attached to the container. Tether nearby.

[Effect]

FIG. 2 is an explanatory diagram of the operation of the present invention, and as in the case of FIG. The state in which the system is unfolded in a string of beads, the stage is the state immediately before this unfolded system lands,
Further, each stage indicates the state in which this system has landed on the minefield M.

The launched flying object (rocket 20) takes out the tow cable 30 from the storage section 34, indexes it, and is towed while passing through an acceleration period and transitioning to inertial flight.
During this time, the tow cable is extended toward the vicinity of the launch point while being pulled by the above-mentioned traction force. The freedom of movement of the parachute 9 through which the tow cable is led is therefore restricted, and the parachute 9 is forced to keep its open position sideways, as shown by the steps. Therefore, the aerodynamic resistance force of the parachute effectively acts as the braking force, and as a result, the block 1
It is possible to make the development form rich in linearity. As the system developed in this way descends, the extension direction of the tow cable 30 gradually approaches the horizontal direction, so that each block 1 can be landed on the ground almost simultaneously while being linearly arranged in this direction. .

In this embodiment, the total length of the tow cable is determined as described above, and the rear end is tethered, so that the tow cable expands just before landing and performs the function of the brake cable, as shown in the step. However, at this time, the system of the deployed block 1 has stalled due to the braking action of the parachutes 9, so sudden braking is not applied as in the conventional system, and the deployed form of the block is therefore disturbed. Never. This tow cable makes the landing position accurate, and since the cable extends at the initial stage of braking and then contracts, the rebound of the block 1 can be suppressed as the system is pulled backward while landing.

[Effect] As explained above, in the present invention, when the minefield processing device is launched, the projectile 20 expands while flying while indexing the tow rope 30, and when the parachute is released, the air hole 9a in the center of the umbrella part is expanded. The parachute 9 is pulled out and deployed by the tow cable 30 that is passed through the parachute 9, and the parachute 9 is opened without delay, and the air hole 9a in the center of the umbrella part is opened.
The parachute 9, whose movement direction is restrained by the tow rope 30, is stretched out and tensioned in order to apply braking by applying aerodynamic resistance force in the opposite direction to the traveling direction. At the same time, the explosive blocks 1 connected in series can be deployed in a chain.

Then, by the movement of the flying object 20 and the braking force of the parachute 9 whose direction of motion is restrained by the tow cable 30, the connecting cable 2 is expanded and tensed, and the explosive blocks 1 connected in series are strung into a chain. When deployed, one end of the towline 30 is fixed at the mooring position, so when the flying object 20 falls, each explosive block 1 lands at almost the same time while being deployed in a chain and falls. The tow cable 30 can be laid in a straight line between the flying object 20 and the mooring position of the tow cable 30.

Thereby, it is possible to exert the desired power against the minefield, and it is possible to secure a path through which the mines are cleared efficiently in a short time.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part showing one embodiment of the present invention,
FIG. 2 is an explanatory diagram of the operation of the present invention, FIG. 3 is a sectional view of a conventional device, and FIG. 4 is an explanatory diagram of the conventional operation. 1... Explosive block, 2... Connecting cable, 4... Explosive block connection, 9... Parachute, 20
...Flying object, 30, 30a, 30b... Towing cable,
34...Reservoir.

Claims (1)

[Scope of Claims] 1. A structure consisting of a connecting body 4 in which a plurality of explosive blocks 1 are connected in series by connecting cables 2, and a parachute 9 connected to the rear of the connecting body is housed in a flying object 20. , the flying object 20 flies over the minefield, and the parachute 9 flies above the minefield in front of the minefield.
In the apparatus for detonating and detonating landmines by releasing the connected bodies 4 in a series of beads and then lowering them onto the target line of the minefield and detonating the dropped explosive blocks 1, the device has a range approximately corresponding to the range of the projectile. Tow cable 30
was passed through the air hole 9a provided in the center of the umbrella portion of the parachute 9, and one end of the towing cable 30 was connected to the tail end of the connecting body 4, and the other end was moored to the ground surface. A minefield disposal device characterized by: