RU2282813C1 - Method for automatic no-fire determination of corrections to fire of artillery guns for deviation of properties of lots of propellant charges - Google Patents

Abstract

FIELD: military equipment, applicable for ballistic preparation of automatic fire of tank guns and self-propelled guns.

SUBSTANCE: the method consists in the fact that the correction to the shell muzzle velocity for a deviation of properties of a lot of propellant charges is introduced automatically at loading by automatic mechanism for artillery gun loading. The correction is taken into account according to the content of moisture in powder as compared with the initial (manufacturer's) one. For introduction of corrections use is made of the signal from the powder moisture content sensor positioned inside the propellant charge of the artillery round. The signal is read off the moisture content sensor and its value is taken into account at introduction of a correction to the shell muzzle velocity.

EFFECT: enhanced efficiency of fire, reduced time for ballistic preparation of fire.

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Description

The invention relates to a method for ballistic preparation for firing artillery guns and can be used for ballistic preparation for firing automatic guns of tank guns and self-propelled artillery guns having an automatic loading mechanism (mechanism).

The ballistic preparation of the gun includes the definition of corrections for firing due to [1]:

- wear of the channel of the gun barrel;

- deviations from the tabular (+ 15 ° С) temperature of the propellant charge;

- changes in the properties of a batch of propellant charges;

- ballistic characteristics of shells.

The invention provides a method for determining the correction for shooting due to changes in the properties of a batch of propellant charges. The prototype of this invention is the invention RU 2206042 C2, IPC F 41 G 3/12, dated 10.06.2003, [2].

The production conditions and the test system of gunpowder and charges cannot ensure that the initial velocity reported to the shells by the charges of any batch is equal to the tabular initial velocity. In addition, over time, depending on storage conditions, physical and chemical changes occur in gunpowder, especially pyroxylin, which lead to a change in the initial velocity of the shells up to 4% [3].

At present, in the troops, without preliminary firing, corrections can be made to the initial velocity of the projectile for the wear of the barrel using the PZK device (camera metering device), for the deviation of the charge temperature and ballistic characteristics of the projectile from the table values. The correction to the initial velocity of the projectile, taking into account the change in the characteristics of gunpowder after long-term storage, at present can only be determined by firing a gun at the ground, or using a field artillery ballistic station [1]. Since carrying out preliminary firing at a firing position when applying new batches of charges is not possible, then often the correction to the initial speed for changing the properties of propellant charges is not taken into account, or is taken into account according to the data of the batch of shots, i.e. excluding long-term storage conditions. This leads to a decrease in firing efficiency.

The disadvantages of this method are obvious. It is not efficient, time-consuming, very expensive, allows for not taking into account the amendments to the initial velocity of the projectile to change the properties of a batch of propellant charges after long-term storage, which leads to a decrease in firing efficiency.

The aim of the present invention is a shooting-free, automatic determination of the correction to the initial velocity of the projectile to change the properties of a batch of propellant charges when loading an automatic (mechanism) of loading artillery guns.

Numerous studies have shown that the main reason for the change in the properties of propellant charges from pyroxylin powders is the change in the moisture content of the powder. It was found that a 1% change in the moisture content in gunpowder leads to a change in the initial velocity of the projectile to 4.5%.

This goal is achieved by the fact that it is proposed to install a moisture sensor for gunpowder 2 inside the propellant charge 1. When a gun (mechanism) is loading an artillery gun with a moisture sensor for gunpowder 2, a signal is read, the value of which is automatically taken into account when calculating and introducing amendments to the initial velocity of the projectile. The correction is taken into account by the deviation of the moisture content of the powder in comparison with the original (factory) value.

The proposed method allows: 1) to increase the efficiency of shooting, taking into account the individual correction for shooting from changing the properties of each propellant charge; 2) reduce the time of ballistic shooting training; 3) to exclude the requirements for providing artillery batteries with one batch of shots; 4) to exclude firing with the help of an artillery ballistic station or by shooting each batch of propellant charges in the area; 5) to ensure control of the technical condition of propellant charges at all stages of their operation without disassembling and laboratory tests.

Used Books

1. The rules of firing and fire control artillery. Division, battery, platoon, gun. PS and UO-96. Part 1. - Moscow: Military Publishing House, 1996. - 375 p.

2. Patent RU 2206042 C2, IPC F 41 G 3/12, dated June 10, 2003.

3. Tishunin I.V. The course of gunpowder. Part 4. - M .: Artillery Order of Lenin and the Order of Suvorov Academy. Dzerzhinsky, 1946 .-- 196 p.

Claims (1)

A method for automatically shooting without shooting corrections for artillery guns to change the properties of a batch of propellant charges, characterized in that in order to take into account the changes in the properties of a batch of propellant charges during long-term storage and reduce the time of ballistic preparation for firing, a moisture sensor for gunpowder is inserted into the propellant charge, a signal is read from a moisture sensor and take into account its value when introducing amendments to the initial velocity of the projectile.