RU2704160C1 - Propellant charge with increased energy characteristics to armor-piercing sub-caliber projectile - Google Patents

Abstract

FIELD: military equipment.

SUBSTANCE: invention relates to ammunition of tank weapons, namely, to shot with armor-piercing sub-caliber projectile, and can be used in tank military subdivisions. Throwing charge with increased energy characteristics to armor-piercing sub-caliber projectile with energy additive in components of propellant of one type. Total chemical composition of the propellant includes colloxylin 50.4 %, nitrodiglycol (NDG) 23.85 %, dinitrotoluene (DNT) 8.1 %, dibutyl phthalate (DBP) 4.05 %, vaseline 3.6 %, an energy additive (EA) 10 %. Invention provides higher values of energy and ballistic characteristics of the propellant charge, which increases the range of firing to the target by an armor-piercing subcaliber projectile by 4 %.

EFFECT: invention makes it possible to increase range of firing to target and efficiency of destruction of armored, light-armored enemy weapons and non-armored targets.

1 cl, 2 dwg, 2 tbl

Description

The invention relates to ammunition of tank weapons, namely, a propellant charge for armor-piercing projectile, and can be implemented as a propellant charge for guns that have this type of shells in their ammunition. The prototype of the invention is a propelling charge of the type of domestic BPS samples, as well as patent application RU No. 99124367/02 09/20/2001

The presented porotype of a propellant charge to a tank gun consisting of two types of pyroxylin powder. Designed to defeat the enemy’s armored targets, including equipped with dynamic defense, and lightly armored enemy equipment. The developed throwing charge is used for firing from a tank gun. The developed throwing charge delivers an armor-piercing projectile to the target due to the burning of the combined throwing charge consisting of two types of powder elements.

Due to the fact that the modern strategy on the battlefield requires defeating enemy targets at long ranges. The question arises of increasing the firing range for probable targets of the enemy. Basically, the shtank means of delivering an armor-piercing projectile to the target at the moment have a range of 1.5 to 2 km, which in turn affects the efficiency of firing from a tank gun.

When firing an armor-piercing subcaliber projectile driven by powder gases from a barrel of a tank gun, which is closed behind the wedge by a bolt relative to the direction of shooting, a certain initial pressure of the powder gas behind the projectile is initially required to force it to accelerate along the barrel with an initial speed that provides increased effective firing range.

The aim of the invention is to increase the value of the firing range of an armor-piercing projectile due to a change in the composition of the material of the propellant charge of pyroxylin gunpowder, which contributes to an increase in the pressure of powder gases when firing an armor-piercing projectile from a barrel of a tank gun.

Unlike the existing prototype of the propellant charge, the developed design of the propellant charge with increased energy characteristics for armor-piercing subcaliber consists of one type of pyroxylin gunpowder and allows to increase the firing range by changing the composition of the propellant charge of gunpowder. Changing the composition of the propellant charge of gunpowder is carried out by introducing into the component composition of pyroxylin gunpowder an energy additive (ED). In this case, the mass of the propellant charge does not change, and the value of the energy characteristics ƒ, W, α and the pressure of the powder gases P when transferred to the armor-piercing projectile, increases by 2-4%.

The propellant charge with increased energy characteristics to the armor-piercing projectile is made in the form of a single beam:

Throwing charge consists of the following elements (Fig. 1):

1) Cover;

2) Case;

3) Powder charge with ED.

The principle of operation of the proposed propellant charge with increased energy characteristics is as follows.

When the propellant is ignited, the power of the powder gas (powder force ƒ), the pressure of the powder gases P _g , which further contributes to the departure of the armor-piercing projectile from the barrel of the gun with a given initial speed at the effective firing range, begin to act actively on the armor-piercing projectile in the gun barrel .

This effect is achieved due to the energy additive introduced into the propellant charge.

To determine the value of the energy characteristics ƒ, W, α of the pressure P acting on the projectile, experimental and numerical studies were carried out.

The construction of the experimental plan was reduced to the choice of determining the parameters of the propellant charge presented in the Appendix table 1.

According to the parameters of the propellant charge, the energy and ballistic characteristics of the pyroxylin powder and the prototype propellant charge (pyroxylin + 10% ED) are presented in Table 2

Using the data in the table, a graphical dependence of the "power" of the propellant powder propellant on the ED content in the prototype was constructed (figure 2).

When 10% is introduced into the powder, the ED “force” of the propellant powder propellant increases by 2.7%.

When 10% ED is introduced into the gunpowder, the cowlum of powder gases decreases by 1.8%, and then remains constant, this is due to the fact that this ED has a positive oxygen balance, more complete oxidation occurs and more heavy gases are formed.

It should be noted that the highest value of all energy and ballistic characteristics is achieved with the introduction of the amount of ED up to 10%.

Information sources

1. Serebryakov M.E. Internal ballistics. - M. Oboroggiz, 1949.

2. Galash Yu.F., Korolev V.A. Design of small arms, artillery and missile weapons. Part III: Basics of designing small arms cartridges: Textbook. allowance. - 2nd ed., Erased. - Penza: VA MTO (phil.), 2013 .-- 159 p.

Claims (1)

A propellant charge with increased energy characteristics to an armor-piercing projectile, characterized by an energy additive in the components of a propellant charge of the same type, the total chemical composition of which includes: colloxylin 50.4%, nitrodiglycol (NDG) 23.85%, dinitrotoluene (DNT) 8 , 1%, dibutyl phthalate (DBP) 4.05%, petrolatum 3.6%, energy supplement (ED) 10%.

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