SU60794A1 - Snare to interrupt the mine trawl - Google Patents

Description

Known projectiles for interrupting a mine trawl, mounted on a minrep and made in the form of a box, carrying a slow-burning explosive inside, and outside charges subtitling for a trawl. The projectile described in accordance with the invention differs from the known projectiles for interrupting the mine trawl in that in order to move the projectile through the minrat and simultaneously communicate the projectile with respect to the axis of the minirep, the projectile body is provided with nozzles through which the discharge of the combustion products placed in the shell of the projecter. In order to preserve the miniprap when a trawl is blown up in the center of the body, a through channel is used through which the miniprap passes, and two rods are used on the sides of the body, on which blasting cartridges are located. The device also uses three mercury closures connected through a common contact-safety device with an electric battery, and the plugs and bushings used are made of a material that is easily collapsing from the pressure of gases.

By this projectile it is possible to interrupt the trawl of any system and the thickness of the trawling cable.

FIG. 1 shows an axial section of the described projectile; in fig. Figures 2 and 3 of the section along lines AA and BB in FIG. one; in fig. 4 is an axial section of the projectile; and FIG. 5 is a top view, under the action of an explosive.

Snar d (Fig. 1) consists of a cylindrical box / equipped with two rods 2, at the ends of which there are cartridges 3 charged with strong explosive. Rods 2 are hollow, ignition cords are laid in the channels (not shown in the drawing), connected chucks 3 with the internal cavity of the box.

Box 4 contains charge 4 of a slowly burning rocket type explosive mixture. The explosive mixture is ignited by an electric fuse 5 receiving current from a battery of cells 6; the electrical circuit is indicated by a dotted line.

No. 60794-2 In the position indicated in FIG. 1, the electrical circuit is open in two places: in the mercury switch 7 and between the pair of contacts 8 of the fuse //.

In the wall of the sleeve 9, made of durable insulating material, tightly inserted two metal contacts 8, included in the circuit of the above-mentioned electric igniter. The sleeve 9, inserted into the wall of the box /, is tightly closed outside by the stopper 10. In the cavity of the sleeve, between the contacts 8 and the stopper 10, there is a small layer of substances that are easily soluble in water.

When the projectile is in stock or aboard a ship, the cork 10 tightly closes the sleeve, the contacts 8 are disconnected and the projectile is completely safe.

Before launching the projectile into the water, the plug 10 turns out as soon as the projectile enters the water, the safety layer is dissolved, the water fills the cavity of the sleeve 9 and closes the contacts 8.

Now the action of the fuse depends only on the position of the mercury closure 7. As indicated in FIG. 2, mercury closures in snar de three; they are located around the circumference of the projectile at intervals of 120 °. The poles of the same name of all three mercury switches are connected in parallel (this is not indicated in Fig. 2, so as not to complicate the drawing). This built-in mercury contactor will close the fuse 5 circuit, whichever side the box / tilts, come out of its normal vertical position.

The cylindrical box / has an axial through hole through which the minrep 17 passes to the sleeve 12, into which the upper end of the minrep is fitted and the flange 13 is attached, to this flange the shell is suspended by means of two bolts 14, which are screwed onto the threads in soft sleeve 15 metal or plastic, embedded in the upper bottom of the box.

The box has two more tangential openings, closed with soft metal or plastic plugs 16 inserted into the thread. FIG. 3 shows a horizontal section of the projectile at the level of the tangential holes.

Snar d can be suspended from a normal mine, as the weight of the shot is not well, or to a special buoy installed on the bark.

To achieve greater clarity, the projection drawing is schematized; the box / is indicated as one piece, so that the minren comes through the axial channel of the box. However, it is possible to make the box so that it can be wound up on the side of the minrep 17.

The action is the following; as soon as the minrep 17 is caught by the trawl 18 and deviates significantly from the vertical position, since the mercury contactor is installed so that they do not react to small deviations, one of the mercury contactor closes the fuse circuit 5 In the box / instantly creates pressure, which will tear up the bolts 14 bushings / 5, as well as vybibet tube 16. Snar d rushes but minrepu down, as indicated in FIG. 4, under the action of its own weight, greatly increased by the reactive action of the gases emanating from the upper orifices 20. In addition to the downward movement, due to the reactive effect of the gases, the nozzles 19 located tangentially, the projectile will rotate counterclockwise as indicated in FIG. . five.

Snare det on the trawl, and both of the subversive cartridge 3 will be tightly pressed against the trawl cable 18. When the explosive mixture burns out, the ignition cord will explode both of the cartridge 3 and the trawl cable 18 will be broken in two places. FIG. 4 mercury contactor and fuse are not listed, as they are destroyed by the explosion at this moment.

It is possible to choose the length of the rods 2, the composition and weight of the blasting ammunition 5 in such a way that the projectile interrupts the cable in two places and lowers the miner 17 on the mine measles to its normal position.

In the accompanying drawing, the projectile is schematized, but in the actual position the projectile will be uncomplicated. By modifying the design of the suspension bolts 14, it is possible to give the holes in the sleeves 15 tilts in opposite directions so that the gases vyhravatsya from these holes will push the screen down and rotate it, which eliminates the need for tangential nozzles 19 on the side surface of the box 1.

FIG. 1, the fuse P is shown inside the box /, however it is possible to arrange it outside, then the insulating sleeve 9 will not experience pressure from the explosion of charge 4.

Subject invention

Claims (4)

1. A slug for interrupting a mine trawl, mounted on a minrep, made in the form of a box, carrying a slow-burning explosive inside, and on the outside subversive charges for a trawl, characterized in that, in order to move the projectile along the mines, and simultaneously communicate it rotates about the axis of the miniprap, the shell of the projectile is provided with nozzles through which the outflow of combustion products placed in the charge housing occurs. 2. The shape of the projectile described in claim I, characterized by using a through channel in the center of its body for passing the minrep and on the sides of its body two rods with blasting cartridges located at the ends of the rods in order to keep the minesweep undermining the trawl. 3. The form of implementation described in paragraphs. 1 and 2 shells, characterized by the use of three mercury switches located in the same plane at an angle of 120 ° and connected in parallel through a common contact safety device with an electric battery. 4. The form of execution of the projectile characterized by claim 1, 2, 3, which is used for plugs and bushings of a material that is easily destructive from pressure gases. - 3 - # 60794 3