RU2612406C1 - Grenade testing rig - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: grenade testing rig contains a gas generator formed by a cartridge chamber with the light weapon blank cartridge installed in it, a pressed breechblock with a cartridge trigger, an intermediate chamber between a barrel and the cartridge chamber, the smooth or rifled barrel installed with provision of pressing of the leading band of a grenade to the end of its guiding part by a shell simulator, a forcing unit, which is located between the intermediate chamber and the cartridge chamber, for blank cartridge charge and holes of a gas-dynamic link between the intermediate chamber and the barrel. The forcing unit for the blank cartridge charge is formed by the indestructible curtain adjoining to the cartridge chamber equally centered towards it and equipped by an axial projection located in the cartridge chamber, orifices performed on the perimeter of the curtain, and radial notches on its end performed from the axial projection to each orifice. Whereupon, the orifices are shifted relatively to the holes of the gas-dynamic link between the intermediate chamber and the barrel in the radial or circular directions, and the axial projection is performed with the diameter less than the cartridge neck bore opened.

EFFECT: invention allows simplifying operation with the rig and cheapening of tests.

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Description

The present invention relates to the defense industry, and in particular to installations for testing, testing for the performance and durability of grenades, mainly for grenade launchers equipped with shells, as well as parts and components of grenades, shells and mines (fuses, moderators, etc. .).

The safety and reliability of grenades, their parts and assemblies is largely determined by the reliability of methods for monitoring the strength and performance of both the grenade itself and its individual components in the process of their development and serial production, as well as the simplicity and low cost of these processes.

Known devices used for this, according to the authors, do not fully meet these requirements.

An example of this is the well-known installation for testing products according to Russian patent No. 2235301 dated 08/27/2004, selected as an analogue.

This installation contains a smooth or rifled barrel, a powder gas generator, formed by a chamber with a unitary cartridge with an inert shell mounted in it, a shutter with a triggering mechanism for the unitary cartridge, and an intermediate chamber gas-dynamically connected with the barrel and the chamber, while in the chamber in front of the shell of the unitary cartridge and with emphasis there is a partition with through holes along its perimeter passing into the intermediate chamber and forming a gas-dynamic connection of the intermediate chamber with the cartridge nickname. Inside, the diameter of the chamber above the barrel of the sleeve of the unitary cartridge to the septum is made larger than the diameter of the projectile of the unitary cartridge, and half of the difference in their diameters is less than the minimum size of the powder charge elements of the unitary cartridge.

This embodiment of the chamber forms a forcing unit for the powder charge of the unitary cartridge and its gas-dynamic connection with the volume in front of the partition.

The main disadvantages of the analogue follow from the following:

- in the process of testing, as a rule, the unitary cartridge shell is destroyed into separate parts (fragments) that can block openings in the partition and, therefore, randomly change the mode of action of powder gases on the test product or, if they are sufficiently completely shut off, lead to the destruction of the installation ;

- for testing it is possible to use only practical cartridges, the shells of which do not contain explosive or combustible substances present in explosive, tracer and other shells. However, these cartridges do not differ in size from practical ones and, therefore, their erroneous use is possible, which can lead to damage or destruction of the installation, personal injury to the testers when removing an unexploded burst shell from the installation, etc .;

- the increased cost of testing due to the use of a unitary cartridge, which sometimes contains a rather complex and expensive inert shell, and the difficulty of removing it from the installation after a shot due to significant deformations.

In another well-known installation for testing grenades according to Russian patent No. 2387948 dated 04/27/2010, selected as a prototype, the disadvantages of the analogue are largely eliminated.

This installation comprises a gas generator formed by a chamber with a blank small arms cartridge mounted therein, a pinched shutter with a cartridge trigger mechanism, an intermediate chamber between the barrel and the chamber, formed by a simulator of the shot grenade of the tested grenade, gasdynamically connected to the barrel and the chamber, a smooth or rifled barrel installed with the preload of the leading grenade belt to the end of its guide part with a sleeve simulator, and placed between the intermediate chamber and the chamber forcing unit for the charge of the cartridge, formed by a flat destructible membrane, pressed along the perimeter to the chamber.

The objective of the present invention is to eliminate the disadvantages of the known installations for testing products, namely, simplifying the installation and reducing the cost of testing.

The solution of the technical problem is achieved by the fact that in the installation for testing grenades containing a gas generator, formed by a chamber with a blank cartridge for small arms installed in it, pushed by a bolt with a cartridge trigger mechanism, an intermediate chamber between the barrel and the chamber, a smooth or rifled barrel, installed to ensure pressing the lead grenade belt to the end of its guide part with a sleeve simulator located between the intermediate chamber and the chamber forcing unit for charging the idle about the cartridge and the holes of the gas-dynamic connection of the intermediate chamber with the barrel, the forcing unit for charging the empty cartridge is formed by an indestructible partition adjacent to the chamber, centered relative to it and equipped with an axial protrusion located in the chamber, throttle holes made around the perimeter of the partition, and radial grooves on it the end made from the axial protrusion to each throttle hole, while the throttle holes are offset relative to the holes of the gas-dynamic connection between an exact chamber with a barrel in radial or circumferential directions, and the axial protrusion is made with a diameter smaller than the inner diameter of the barrel of the cartridge case of an empty cartridge in the open state.

The essence of the invention is illustrated by graphic materials, where in FIG. 1 shows an installation for testing grenades, in FIG. 2 shows a forcing unit located in the intermediate chamber, an installation for testing grenades is presented, comprising a chamber 1 with an empty cartridge 2 with a charge 16 attached to the chamber by a shutter 3, a trigger 4, between the intermediate chamber 9 and the chamber 1 there is a forcing unit 5, having an axial protrusion 6, throttle holes 7 and radial grooves 8. The increased pressure region 10 is formed by the connection of the intermediate chamber 9 and the forcing unit 5 and provided with holes for gas-dynamic coupling 11, connecting it with the simulator sleeve 12. The grenade 13 with a lead belt 15 is placed in the barrel 14.

When fired, the powder gases generated by the ignition of the powder charge 16 of the blank cartridge 2 from the chamber 1 pass through radial grooves 8 and throttle openings 7 into the high pressure region 10 in the intermediate chamber 9, and then through the openings of the gas-dynamic connection 11 into the simulator of the sleeve 12, creating an excess pressure simulating excess pressure during the combustion of the propellant charge of a shot, giving the grenade 13 acceleration.

From the description of the device and the operation of the installation according to the invention, it can be seen that the installation design is simpler than the prototype and does not contain destructible partitions requiring replacement after each shot, which simplifies the work and reduces the cost of testing.

Claims (1)

Installation for testing grenades, comprising a gas generator formed by a chamber with a blank small arms cartridge mounted therein, a pinched shutter with a cartridge trigger mechanism, an intermediate chamber between the barrel and the chamber, a smooth or rifled barrel installed to ensure that the grenade’s leading belt is pinched to the end of its guiding part a sleeve simulator located between the intermediate chamber and the chamber forcing unit for charging an empty cartridge and the gas-dynamic communication hole of the intermediate chamber ery with a barrel, characterized in that the forcing unit for charging an empty cartridge is formed by an indestructible partition adjacent to the chamber, centered relative to it and provided with an axial protrusion located in the chamber, throttle holes made around the perimeter of the partition, and radial grooves on its end made from the axial protrusion to each throttle hole, while the throttle holes are offset relative to the holes of the gas-dynamic connection of the intermediate chamber with the barrel in a radial sludge circumferential direction, and the axial projection is formed with a diameter smaller than the inner diameter of the sleeve blank cartridge dulcitol in the open state.

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