RU2351874C2 - Method of automatic preparation for artillery fire - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: method of automated ballistic preparation of fire consists in that the correction for gun barrel warming up is entered automatically at every shot. To allow for barrel warming up before shooting, it is proposed to arrange temperature pickups on the barrel outer side. In firing, the signal proportional to the barrel temperature over its entire length is picked up from the temperature pickups and is allowed for in computation and entering of correction into the shell initial velocity.

EFFECT: higher fire efficiency, rate of fire, eliminating necessity of warming-up shot.

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Description

The invention relates to a method for ballistic preparation for firing artillery pieces and can be used for ballistic preparation of firing in automatic mode of self-propelled artillery pieces.

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 normal (+ 15 ° C) temperature of the propelling charge;

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

- ballistic characteristics of shells.

When firing artillery pieces as a result of heat exchange between powder gases having a temperature of up to 3500 K, and the barrel, the latter warms up to 700 K and more. As a result of this, the inner diameter of the bore increases, and as a result, the gap between the projectile and the bore. In this case, when the projectile moves along the bore, the consumption of powder gases increases through this gap, which reduces the efficiency of the gun and the initial velocity of the projectile [1]. For standard artillery guns, upon reaching the maximum allowable wear, a decrease in the initial velocity of the projectile reaches 6%, which corresponds to a range error of up to 1 km [2]. In addition, the warming up of the gun barrel causes a change in the ballistic coefficient of shells. Failure to take these changes into account can lead to range errors for individual artillery guns and charge numbers, the values of which can reach 1.8% of the topographic range to the target [3].

Therefore, to ensure high accuracy of artillery fire, it is also necessary to take into account the change in the initial velocity of the shells and the change in the ballistic coefficient of the shells due to the heating of the gun barrel during firing.

The invention involves a method for preparing in an automated mode firing from an artillery gun, taking into account amendments to the initial velocity of the shell for heating the barrel of the gun. Prototypes of this invention are inventions RU 2282813 C1 (IPC F41G 3/12, F41G 31/100) dated 06/06/2005 [4], RU 2282812 C1 (IPC F41G 3/12, F41G 31/100) dated 05/16/2005 . [5], RU 2206042 C2 (IPC F41G 3/12) dated 10.06.2003 [6].

Currently, barrel warming up during firing is not taken into account, which reduces the rate of fire of guns and the effectiveness of their combat use [1, 3]. Before starting a fire mission at low temperatures, it is recommended to produce a warm-up shot [3], which, with short fire raids, reduces the effect of surprise.

The aim of the present invention is the automated determination of the correction to the initial velocity of the projectile for heating the barrel with each shot.

This goal is achieved by the fact that it is proposed to install temperature sensors 2 from the outside of the barrel 1 (see drawing). When shooting in automated mode, a signal proportional to the barrel temperature along its entire length is read from temperature sensors 2, the value of which is taken into account when calculating the gun on board computers and introducing amendments to the initial velocity of the projectile.

The invention allows: 1) to increase the effectiveness of firing, taking into account the correction for firing to warm up the barrel with each shot; 2) increase the rate of fire; 3) eliminate the need for a warm-up shot.

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. Shooting tables for lowland and mountainous conditions of the 152-mm howitzer 2A65 and the 152-mm self-propelled howitzer 2C19. TS RG No. 187. - Moscow: Military Publishing House, 1994. - 760 p.

3. A manual on the study of the rules of shooting and fire control of artillery. Division, battery, platoon, gun. - Moscow: Military Publishing House, 1996. - 532 p.

4. Patent RU 2282813 C1 (IPC F41G 3/12, F41G 31/100) dated 7.06.2005.

5. Patent RU 2282812 C1 (IPC F41G 3/12, F41G 31/100) dated 05.16.2005

6. Patent RU 2206 042 C2 (IPC F41G 3/12) dated 06/10/2003.

Claims (1)

A method for preparing in automatic mode firing from an artillery gun, including calculating the initial velocity of the projectile, taking into account the correction for barrel warming up during firing, while gun barrel warming up during firing is determined before each shot by means of temperature sensors installed along the entire length of the gun’s barrel by reading signals from them, which are taken into account when introducing amendments to the initial velocity of the projectile.