KR20110069930A - In-flight stabilization device due to inflow of outside air into the proximal part of the shell - Google Patents

Abstract

The present invention relates to a shell which is a military explosive explosive, and more specifically, the shell is lean by injecting and discharging the outside air flowing along the shell into the breech chamber due to the decrease in flight stability caused by the lean air zone formed at the rear of the ridge. By suppressing or reducing the formation of air zones, the stability of the shell can be increased, and the device can increase the accuracy of shooting at a longer distance, and can improve the accuracy of the shell.

Shell, flight stability, lean air zone, turbulence suppression

Description

In-flight stabilization device due to inflow of outside air into the proximal part of the shell

The present invention relates to the stabilization of the shell in flight, by suppressing or minimizing the formation of the lean air zone by releasing the outside air flowing into the ridge in the lean air zone formed behind the tail portion due to the velocity of the shell in flight. This is to increase the stability of the shells in flight, to increase the long range and more accurate shooting accuracy.

A shell is a military fire explosive that flies away from the gun and blows towards a distant target under the pressure of the propulsion gas from the combustion of the propellant charge.

Unlike a rifle, it hits a distant target, increasing the amount of propelling charges used in artillery and increasing the amount of combustion, prolonging the range of the shell by the pressure of the combustion gas in the artillery. The development of shells is achieved by mounting various devices on the shell or by improving the shell in order to hit the target more remotely and more accurately.

As shown in the above diagram, the shell is fired from the muzzle and raised to the maximum trajectory altitude, and then descends toward the impact point. In order to increase the maximum range, it is necessary to increase the speed of exiting the muzzle to reduce the maximum trajectory and extend the range. The slow rate at which the shells fire from the muzzles will not allow you to travel long distances. Of course, if the shell is equipped with a special wing, you can fly longer distance while hitting the target to hit the target, but due to the wind and various influences during the flight, the flight stability is lowered, it is difficult to form a precise impact point.

A shell is a military fire explosive that strikes a target by flying in the air from the gun under the pressure of the combustion gas from the firing of the propellant charge.

Today's shells are aimed at hitting targets at greater distances and more accurately, which inevitably increases the amount of propellant charge, increases the combustion gas pressure, or mounts the shell's foam to intricate devices. This reduces the explosive power of the shell by reducing the amount of explosives called peony filled in the shell instead of mounting it. In addition, maneuverability is limited by making stronger barrels, longer barrels, and thicker barrels to withstand high flue gas pressures.

The shell, which has been left under the pressure of the propulsion gas from the muzzle, continues to increase in velocity in the air until some time during the flight, at which point the shell exits the muzzle more than 1,000 m / s, with a range of 10-20 km to 30-40 km. Growing. This is due to the development of technology and the improvement of the propulsion charge performance, which increased the pressure of the combustion gas generated during the combustion of the propulsion charge, thereby increasing the propulsion pressure on the shell.

The increased range means that the shell has increased in speed while flying in the air, while the shell is flying in the air at high speed. Is formed, which reduces the flight stability of the shell.

Poorly stable shells not only shorten their range, but also increase their range of impact, reducing their accuracy and effectiveness. The turbulence of turbulence caused by the lean air zone behind the shell's breeze becomes stronger as the speed increases, which reduces the stability of the shell due to the force applied to the shell during flight.

As shown in FIGS. 3 and 4 above, the lean air zone formed at the rear of the foam part during the flight of the shell is formed by the structure during the flight of the shell, and when the inclination angle of the tail part is 0 ° as shown in FIG. Larger lean air zones are formed. Even when the angle of inclination of the fin is as shown in FIG. 4, when the speed of the shell increases, a lean air zone similar to that of FIG. 3 is generated. Of course, the lean air zone of FIG. 4 is less than that of FIG. 3, but the pressure of the propellant gas received from the artillery is received more by FIG. This can be said to be larger.

The present invention provides an external air inlet through which the outside air flowing along the shell during the flight flows into the pomyeon to the pomace of the shell to suppress or reduce the formation of lean air zone generated during flight As it rotates, it is released to the rear of the breech of the shell, suppressing or lowering the lean air zone formed by the shell's structure to increase the stability during the flight, resulting in more distance and more accurate impact points, resulting in more accurate shooting accuracy. have.

A description with reference to the accompanying drawings is as follows.

1 is a structural diagram of a shell to which a fuse is attached, in which an external air inlet 9 is installed in the breech portion 6 of the shell 1, and the breech portion of the shell 1 is rotated in a direction in which the shell 1 rotates. 6) The external air inlet 9 installed in the carcass 3 collects the incoming external air into the breech inner chamber 7 and rotates 21 to discharge it to the discharge port 8, the detailed shape of which is illustrated in FIG. 2. In the expanded portion of the shell, as shown in the enlarged view, the outer air inlet 9 provided next to the turning band 5 has an outer air inlet 9 installed in the rotational direction of the shell 1 so that the shell 1 It is installed in the direction of rotation of the inlet is introduced into the breech part 7, the outside air introduced into the breech part 7 is to be swung, as shown in the bottom view of the pom part of the shell of Figure 3 Outside air flows into the outside air inlet (9) installed at the) and the outside air flow line (21) While turning in the same way, it is discharged to the rear of the shell breech portion 6 as the discharge port 8 of the breech, thereby suppressing or reducing the lean air zone and improving the stability of the shell during flight.

1: Structure diagram of the shell

2: enlarged view of the foam of the shell

3: Bottom view of the foam part of the shell

<Short description of drawing>

1: shell 2: fuse

3: bullet body 4: peony

5: turning band part 6: pomi part

7: foam part inner chamber 8: discharge port

9: outside air inlet

21: outside air inflow stream line

Claims (3)

There is a shell, a military fire explosive, an explosive peony inside the shell, the shell connected to the tail section, and the tail section has an external air inlet that connects to the tail section. Stabilizer during flight of the shell, which is introduced and discharged behind the tail section The method of claim 1, wherein the inflow direction of the external air inlet through which the external air flows from the gill portion of the shell to the lancet compartment is opened in the direction in which the shell rotates during flight, so that the outside air flows into the lancet compartment and discharges to the rear of the lance part. Shell's in-flight stabilization device to increase shell stability during flight In claim 2, one or more outside air inlets introduced into the inside of the tip portion of the shell portion of the shell is opened so that outside air introduced into the inside of the tip portion of the shell during the flight is discharged backward through the discharge port to form an air lean zone. Stabilization device during flight of the shell to suppress or reduce the formation of

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