RU2521064C1 - Tank headroom venting at gunnery - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: proposed method consists in making the gun breech displaces in first direction at recoil and second direction at rebound. Fixed cylinder is arranged nearby said breech to house movable cylinder rigidly secured via rod with said breech. At gun recoil, breech displaces with piston while rarefaction develops inside the cylinder to make air nearby the breech, saturated with combustion gases is sucked via first one-way valve into cylinder working space to stay therein unless the gun rebound. At rebound, piston displaces in opposite direction to displace air from cylinder via second one-way valve and pipeline out from tank headroom.

EFFECT: degreased gas content.

1 dwg

Description

The invention relates to the field of military equipment, in particular to methods for reducing the gas contamination of inhabited departments by powder gases, the source of which is the armament of the tank.

A known method of removing powder gases from the fighting compartment of a military tracked vehicle when firing from the main armament, when the removal of powder gases is carried out by an exhaust ventilation system with a fan inside the inhabited compartments (see Technical description, amphibious assault vehicle (BMD-1). Military Publishing House of the USSR Ministry of Defense, 1973 ., p. 390, 392. Open edition).

In addition, there is a method of removing powder gases from the fighting compartment of a tank when firing from a tank gun for a T-72A tank, which consists in the fact that the filter-ventilation unit provides the supply of purified air to the fighting compartment and the control compartment of the machine and creates excess pressure in them (backwater) , and also ventilates the indicated compartments, thereby reducing gas contamination when firing from a cannon and machine gun (see Technical Description and Operation Manual for T-72A Tank Book Two, Part Two. Military Publishing patrimony of the Ministry of Defense of the USSR, 1989, p.118. Open edition. Prototype).

The known method of removing powder gases from the fighting compartment of a tank when firing from a tank gun allows air to be created in the inhabited compartments and partially reduce the overall level of gas contamination by powder gases. However, this method does not allow for full ventilation of the inhabited compartments during intensive firing, to reduce the maximum permissible concentration of carbon monoxide to a safe value, as a result of which crew failure (death) may occur.

The objective of the present invention is to remove powder gases during firing from the breech zone of the tank gun located in the fighting compartment of the tank, a general reduction in the level of maximum permissible concentration of powder gases that appear when using weapons.

The technical result of the proposed invention is the removal of powder gases from the area of the breech of the gun, which contains the highest concentration of powder gases without the expense of electricity, using the energy of the rollback and rollback of tank weapons and reducing the overall gas contamination of the fighting compartment.

Moreover, the method for removing powder gases from the fighting compartment of a tank when firing from a tank gun is based on the fact that the energy of the recoil and rolling of the tank gun is used to remove the powder gases generated in the fighting compartment in the breech zone by installing a fixed cylinder near it and located in the cylinder with a movable piston rigidly fixed to the recoil parts of the gun (breech), into which air containing powder gases is forced to flow (suck in) due to the rarefaction of air created in it when driving enii piston in the cylinder gun recoil, further under pressure created at the reel guns are removed from the cylinder and the crew compartment by pipeline from the crew compartment, it is performed the additional ventilation.

A method of removing powder gases from the fighting compartment of a tank when firing from a tank gun, including creating air back-up by a filter-ventilation unit and expelling air containing carbon monoxide from inhabited compartments through leaks in the tank’s body, characterized in that the breech moves in two directions: in the first when rolling back and in the second when rolling, there is a stationary cylinder near it, in which there is a movable piston, rigidly fixed through a rod with a breech, firing, during recoil of the gun, the breech moves with the piston, a rarefaction zone is formed in the working cavity of the cylinder and air near the breech, saturated with powder gases, is sucked into the working cavity of the cylinder through the first one-way valve and is there until the gun is rolled, when rolling the piston in the cylinder moves in the opposite direction and air is displaced from the cylinder through a second one-way valve through the pipeline, air containing powder gases is removed from the fighting compartment Lenia.

The invention is illustrated in figure 1, which shows a device that provides a method for removing powder gases from the fighting compartment of a tank when firing from a tank gun, where: 1 - fighting compartment; 2 - fixed cylinder; 3 - piston with a rod; 4 - the first one-way valve; 5 - the second one-way valve; 6 - pipeline release of powder gases; 7 - working cavity of the cylinder; 8 - breech (gas source).

When making a shot from a tank gun, the breech (gas source) rolls back with the barrel, moving a rigidly fixed rod with a piston, which is located in a fixed cylinder, fixed near the breech. The working cavity of the cylinder has two one-way valves. In the working cavity of the cylinder during rollback and movement of the piston, rarefaction of air is formed. At the same time, air containing powder gases near the breech (gas source) is sucked in through the first one-way valve, which does not allow this air to pass in the opposite direction, into the fighting compartment and is in the working cavity of the cylinder before rolling. When rolling, the piston, moving with the breech in the opposite direction, creates pressure in the working cavity of the cylinder. Air is displaced from the working cavity of the cylinder into the pipeline for the release of powder gases and through the second one-way valve located in it, which also does not allow gases to pass back into the working cavity of the cylinder, the removal of powder gases from the working cavity of the cylinder through the pipeline from the fighting compartment to the atmosphere, additional ventilation and reducing the overall level of gas pollution in the fighting compartment.

An example of the method. When making a shot from a tank gun, the breech (gas source) 8 rolls back, moving a rigidly fixed piston with a rod 3, which is located in a fixed cylinder 2, fixed near the breech (gas source) 8. The working cavity of the cylinder 7 has two one-sided valve. In the working cavity of the cylinder 7 during the rollback and movement of the piston with the rod 3, a vacuum is formed. Air containing powder gases near the breech (gas source) 8 is sucked in through the first one-way valve 4. When rolling, the piston with the rod 3, moving with the breech (gas source) 8 in the opposite direction, creates pressure in the working cavity of the cylinder 7. The air is displaced from the working cavity of the cylinder 7 into the pipeline for the release of powder gases 6 and through the second one-way valve 5. There is a removal of powder gases from the working cavity of the cylinder 7 into the atmosphere and the fighting compartment 1.

The proposed method allows to reduce the level of gas contamination in the breech zone of the tank gun, the general level of the maximum permissible concentration of powder gases in the fighting compartment and to reduce the likelihood of a crew failure.

Literature

1. Technical description landing vehicle (BMD-1). Military Publishing House of the Ministry of Defense of the USSR, 1973, p. 390, 392. Open edition.

2. Technical description and operating instructions for the T-72A tank, book two, part two. Military Publishing House of the Ministry of Defense of the USSR, 1989, p.118. Open edition. Prototype.

Claims (1)

A method of removing powder gases from the fighting compartment of a tank when firing from a tank gun, which consists in the fact that when a shot is fired from a cannon, the breech moves in two directions: in the first when rolling back and in the second when rolling, a stationary cylinder is located near it, in which there is a movable the piston rigidly fixed through the rod with the breech, when firing, during the recoil of the gun, the breech moves with the piston, a rarefaction zone of air and air near the breech are formed in the working cavity of the cylinder, n saturated with powder gases, it is sucked into the working cavity of the cylinder through the first one-way valve and is there until the gun is rolled, when rolling, the piston in the cylinder moves in the opposite direction and air is displaced from the cylinder through the second one-way valve through the pipeline, air containing powder gases is removed, from the fighting compartment.