FIELD: weapon and ammunition.
SUBSTANCE: mortar contains a base plate, trunk and tripod. In the first version, the mortar has one or more longitudinal grooves on the inner surface of the barrel for air discharge. These grooves in the anterior part of the trunk have one total cross-sectional area, then this area increases. According to the second version, the mortar along the length of the trunk on its inner surface has four sections with different cross-section: in the anterior part of the trunk near the barrel the barrel has a circular section with a diameter equal to the diameter of the mine, or with a gap smaller 0.2 mm, The next section has one or more longitudinal grooves for discharging air, which have a certain total cross-sectional area, in the next section this area increases. In both versions at a distance from the bottom of the trunk, larger than the distance from the tail end of the mine to the minelayers the grooves end.
EFFECT: increase the accuracy of fire.
3 cl, 2 dwg
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