RU2564781C1 - Mortar round - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: mortar round contains a mortar shell with the aerodynamic surfaces hingedly attached on its body with the ability to turn. At the ends of the aerodynamic surfaces the shaped cutouts are made, in which a locking ring is mounted, having the longitudinal grooves on the number of the aerodynamic surfaces. The mortar shell body is made with a shank to secure the aerodynamic surfaces. The shaped cutouts of the aerodynamic surfaces are made in the form of intersecting longitudinal and transverse cutouts. The locking ring has a flange at the end opposite to the recesses for interaction with the transverse cutouts. Inside the hinges the elements of opening and fixing the opened fins are mounted.

EFFECT: improved accuracy and firing range.

4 cl, 3 dwg

Description

The present invention relates to the field of artillery technology, in particular to artillery shells and mortar rounds containing a tail stabilizer.

In the design of such shells and mines, the head, cylindrical, tail parts and the stabilizer are distinguished. The mine stabilizer consists of a tube and feathers and is designed for the stability of the mines flight. The presence of it leads to the transfer of the center of pressure below the center of gravity to the region of the tail, thereby creating a stabilizing moment. The stabilizer feathers, the number of which in various types of mines ranges from 3 to 24, also provide centering mines in the bore.

Mines may have an increased length of the cylindrical part. Such a mine is characterized by a high filling ratio and, accordingly, the power of the action. Therefore, one of the tasks when creating such ammunition is the optimal increase in its length.

The well-known projectile (RF patent No. 2235275, F42B 10/14, 08/27/2004), selected by us for the prototype, contains articulated surfaces that are pivotally mounted on the end face of the projectile and are pivotally mounted on the housing to allow for a turn in the direction of the projectile movement. At the ends of the aerodynamic surfaces formed curly cutouts with a hook and an inclined surface, in which a ring is installed.

The disadvantage of this design is that the aerodynamic surfaces when fired unfold in the direction of the projectile, while reducing the actual working length of the projectile, which negatively affects flight stability. In addition, for a mortar shot with an increased length of the cylindrical part, this design is not acceptable, since in this case a stabilizer longer than the length of the aerodynamic surface will be required, provided that the assembly is increased.

The objective of the invention is the creation of a mortar shot design, which allows to increase the accuracy and range of a mortar, as well as having high reliability and power by increasing its length and improving the design of the stabilizer.

The problem is solved in that in a mortar shot containing pivotally mounted on the shell of the projectile with the possibility of turning aerodynamic surfaces, at the ends of which are formed shaped cutouts in which a retaining ring with longitudinal recesses according to the number of aerodynamic surfaces is installed, the body is made with a shank for fixing the aerodynamic surfaces. The shaped cutouts of the aerodynamic surfaces are made in the form of intersecting longitudinal and transverse cuts, the retaining ring has a flange at the opposite recesses to interact with the transverse cuts on the aerodynamic surfaces, and elements for opening and fixing the open plumage are installed inside the hinges.

In this case, the shank for fixing the aerodynamic surfaces has struts with holes for hinges and protrusions for fixing the ends of the aerodynamic surfaces in the folded state, and the elements of the opening and fixing of the plumage are located in the holes of the shank and are made in the form of torsion springs with an elongated end resting against the middle part of the aerodynamic surface from the side of the shank. In addition, the maximum diameter of the plumage in the folded state is not more than the internal diameter of the barrel minus the size of its side rolling in the barrel when fired.

Thanks to this design, the length of the mine from aerodynamic surfaces to the center of mass is maximized. This allows you to stabilize the flight of mines, and therefore increase the firing range. In addition, when folded, the aerodynamic surfaces do not protrude beyond the shank, which reduces the size of the mine in the assembled state during its transportation.

In FIG. 1 shows a General view of the folding tail unit at the time of the departure of the mine from the trunk.

In FIG. 2 - articulated aerodynamic surface assembly with the shank open (view from the rear end of the mine).

In FIG. 3 shows a ring with recesses assembled with an aerodynamic surface.

The mine along with the gas generator is placed inside the barrel container, which serves to launch the mine, and is also a package for storage and transportation. A shank 2 is attached to the rear of the mine 1 body (Fig. 1). On the rear of the shank 2 there are made racks 3 with holes 4 into which sleeves 5 (Fig. 2) are inserted, which pivotally enable the aerodynamic surfaces 6 to turn in the opposite direction landmine movements. Inside the sleeve 5, a torsion spring 7 (Fig. 2) is installed, which contributes to the disclosure of the aerodynamic surface when the mine leaves the barrel, for this purpose its long part 8 (Fig. 2) abuts the middle part of the aerodynamic surface 6. The short part of the spring 9 goes to another side of the blade 6 (Fig. 2) and is fixed in focus 10 from the rotation. The sleeve 5 and the spring 7 are mounted with a screw 11, which is wrapped in an emphasis 10.

Each aerodynamic surface 6 (Fig. 3) in the front upper part has open intersecting longitudinal 12 and transverse 13 cutouts, and in the middle a wide part 18. To ensure the reliability of their position in the assembled state when moving in the barrel during the shot, a retaining ring 14 is used (FIG. 3), flanged 15, for transverse cuts 13. In the ring, recesses 16 are also made for longitudinal cuts 12. The number of recesses 16 on the retaining ring is equal to the number of aerodynamic surfaces. The ring provides contactless passage of mines in the barrel when fired.

On the shank (Fig. 1), opposite the struts 3, at the location of the front of the aerodynamic surfaces in assembled form, there are protrusions 17 on both sides of them to prevent lateral displacement of the blades at the stage of their disclosure.

The maximum diameter of the aerodynamic surfaces in the folded state, assembly A (Fig. 1) is not more than the internal diameter of the barrel B minus the value B of the side rolling of the barrel during the shot, A <(B - C). This condition is necessary, since at the moment of the exit of the mine from the barrel its muzzle is subject to vibrations and the mentioned gap serves to prevent the destruction of aerodynamic surfaces.

A mortar shot is mounted on the launcher. The gas generator and mine are located inside a disposable container barrel. When firing, the powder charge of the gas generator is initiated to create excess pressure in the bore and accelerate the mine.

At the moment the mine shaft leaves the trunk, gas flows erupt unevenly through the space between the muzzle of the barrel and the shaft. The retaining ring 14, being under excessive uneven pressure, is destroyed. As a result, the aerodynamic surfaces are released and, under the action of the springs 7 and the incoming air flow, open in the rear position to stabilize the flight of the mine.

Claims (4)

1. A mortar shot containing a mine with pivotally mounted aerodynamic surfaces pivotally mounted on its body, at the ends of which curly cuts are formed in which a retaining ring with longitudinal recesses is installed according to the number of aerodynamic surfaces, characterized in that the mine body is made with a shank for fixing aerodynamic surfaces, curly cutouts of aerodynamic surfaces are made in the form of intersecting longitudinal and transverse cutouts, the retaining ring has a flange on the end opposite the recesses for interaction with transverse cuts, and inside the hinges, elements of opening and fixing of the open plumage are installed. 2. A mortar shot according to claim 1, characterized in that the shank for securing the aerodynamic surfaces has struts with holes for hinges and protrusions for fixing the ends of the aerodynamic surfaces when folded. 3. Mortar shot according to any one of paragraphs. 1 or 2, characterized in that the elements of the opening and fixing of the aerodynamic surfaces are located in the holes of the shank and are made in the form of torsion springs with an elongated end abutting against the middle part of the aerodynamic surface from the side of the shank. 4. Mortar shot according to claim 1, characterized in that the maximum diameter of the plumage in the folded state is not more than the internal diameter of the barrel minus the magnitude of the side rolling of the barrel when fired.

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