CN118293740A - Short gun barrel design method for fixing ammunition direction and improving launching attitude stability - Google Patents

Abstract

The invention discloses a design method of a short gun barrel for fixing the direction of ammunition and improving the stability of the launching attitude, wherein a fuel gas release groove and a fuel gas release hole are arranged on a launching barrel, so that the pressure of a thrust chamber is reduced before the launched ammunition leaves the launching barrel, and when the guiding constraint of the ammunition is not released, the disturbance of uneven pushing force of a pushing plate on a projectile body axis is eliminated, and the projectile body axis is consistent with the launching direction. Adding a reference lug design to the ammunition to be launched; when the ammunition is installed, the datum lugs are placed in the fuel gas release grooves, so that a fixed angle is formed between the projectile datum line and the datum line of the launching tube, and the requirement of consistency between the datum and the datum of other system directions on the ground when the launched ammunition is launched is met; when the ammunition to be launched is pushed, the fuel gas release groove is emptied, and conditions are created for the pushing plate to reach the fuel gas release groove to release fuel gas. The invention not only solves the problems of fixing and indicating the ammunition reference direction, but also improves the stability of the ammunition firing shaft.

Description

Short gun barrel design method for fixing ammunition direction and improving launching attitude stability

Technical Field

The invention belongs to the technical field of shells, and particularly relates to a short gun barrel design method for fixing the direction of ammunition and improving the stability of a firing posture.

Background

Typically, the ammunition to be launched is a cylindrical structure which is fitted into the launcher, and its reference direction cannot be fixed, i.e., the reference line of the equatorial plane of the projectile cannot be coincident with or fixed at a set angle to the equatorial reference line of the launcher. In order to fix the reference direction of the ammunition being launched, there are typically the following 3 ways:

Mode 1: the push plate or the bottom of the projectile body adopts a protruding structure, and the inside of the launching tube is provided with a sampling guide groove structure. The ammunition standard mode is fixed, so that the strength of the launching tube is reduced, the tightness of launching is reduced, and the launching disturbance is increased;

Mode 2: the push plate or the bottom of the elastomer adopts a shearable protruding structure, and the protruding structure is sheared off by transmitting thrust. The ammunition standard mode needs to be adopted by the cartridge, so that the strength of the cartridge is reduced, and the design complexity of the system is increased.

Mode 3: the elastic body is connected with the push plate through a locking pin, and the push plate is connected with a locking pin of a bottom cylinder of the launching device. The fixing mode is complex in design and processing and high in assembly difficulty.

On the other hand, in the usual short gun barrel firing mode, when the ammunition is completely inside the firing barrel, the ammunition is less disturbed axially in the initial stage of firing due to the guiding action of the firing barrel. However, as the length of the ammunition exposed out of the cartridge is greater, the restriction of the cartridge to the direction of the axis of the ammunition is smaller, uneven friction between the push plate and the cartridge causes uneven stress on the bottom of the ammunition, and random disturbance deviating from the direction of the ammunition axis of the ammunition is likely to occur when the ammunition is pushed out of the cartridge. Especially, when the pushing plate leaves the launching tube, the projectile body is not limited by the guiding of the launching tube, and is easy to be disturbed, and the direction of the symmetrical axis of the pushing plate is randomly changed due to the fact that the guiding of the launching tube is lost, and the pushing force of the pushing plate to the ammunition is more uneven due to the uneven release of fuel gas, so that the overturning speed of the projectile body is further improved, and the ammunition combat performance with higher requirements on the direction of the projectile body is greatly limited.

The above 3 kinds of fixed ammunition standard methods are not only helpful for improving the stability of the bullet shaft, but also affect the stability of the bullet shaft.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a design method of a short gun barrel for fixing the direction of ammunition and improving the stability of the launching attitude, wherein a fuel gas release groove and a fuel gas release hole are arranged on a launching barrel, so that the rifling pressure of a thrust medicine chamber is reduced before the launched ammunition leaves the launching barrel, and when the guiding constraint of the ammunition is not released, the disturbance of uneven pushing force of a pushing plate to a projectile body axis is eliminated, and the projectile body axis and the launching direction of the projectile body are kept consistent. Adding a reference lug design to the ammunition to be launched; when the ammunition is installed, the datum lugs are placed in the fuel gas release grooves, so that a fixed angle is formed between the projectile datum line and the datum line of the launching tube, and the requirement of consistency between the datum and the datum of other system directions on the ground when the launched ammunition is launched is met; when the ammunition to be launched is pushed, the fuel gas release groove is emptied, and conditions are created for the pushing plate to reach the fuel gas release groove to release fuel gas. The invention not only solves the problems of fixing and indicating the ammunition reference direction, but also improves the stability of the ammunition firing shaft.

The technical scheme adopted for solving the technical problems is as follows:

Step 1: the gas release groove and the gas release hole are arranged on the launching tube, so that the rifling pressure of the thrust chamber is reduced before the launched ammunition leaves the launching tube, and when the guiding constraint of the ammunition is not released yet in the launching tube, the disturbance of uneven thrust of the push plate to the bullet shaft of the ammunition is eliminated, and the bullet shaft of the ammunition is consistent with the launching direction;

step 2: adding a reference lug design to the ammunition to be launched; when the ammunition is installed, the datum lugs are placed in the fuel gas release grooves, so that a fixed angle is formed between the projectile datum line and the datum line of the launching tube, and the requirement of consistency between the datum and the datum of other system directions on the ground when the launched ammunition is launched is met; when the ammunition to be launched is pushed, the fuel gas release groove is emptied, and conditions are created for the pushing plate to reach the fuel gas release groove to release fuel gas.

The beneficial effects of the invention are as follows:

According to the ammunition shaft, the ammunition directional lugs, the gas discharge grooves and the gas discharge holes of the cartridge are adopted, so that the problems of fixing and indicating the ammunition reference direction are solved, and the stability of the ammunition shaft is improved.

Drawings

Fig. 1 is a schematic view of a cartridge and a cartridge structure.

Fig. 2 is a schematic view of a firing device with a charge being fired.

Reference numerals: 1-ammunition directional lugs 1, 2-ammunition upper cover plates, 3-ammunition directional lugs 2, 4-ammunition bodies, 5-launching cartridge positioning grooves 1, 6-launching cartridge gas discharge holes 1, 7-launching cartridge gas discharge holes 2, 8-launching cartridge positioning grooves 2, 9-launching cartridges, 10-launching push plates, 11-combustion chambers and 12-launching charges.

Detailed Description

The invention will be further described with reference to the drawings and examples.

The invention adopts a mode of adding the lugs and the fixing grooves on the upper part of the projectile body and adding the transmitting cylinder, thereby not only fixing the projectile body standard, but also improving the transmitting stability of the ammunition transmitted by the short gun barrel.

The invention mainly comprises two contents:

1. The gas release groove and the gas release hole are arranged on the launching tube, so that the rifling pressure of a thrust medicine chamber is rapidly reduced before the launched ammunition leaves the launching tube, and when the guiding constraint of the ammunition is not released yet in the launching tube, the disturbance of uneven thrust of a push plate to a bullet shaft of the ammunition is eliminated, the bullet shaft of the ammunition keeps consistent with the launching direction for a long time, and the ammunition fight efficiency with high requirement on the stability of the bullet shaft is improved;

2. The ammunition to be launched is added with a reference lug design. When the ammunition is installed, the datum lugs are placed in the fuel gas release grooves, so that a fixed angle is formed between the projectile datum line and the datum line of the launching tube, and the requirement of consistency between the datum and other system direction datum on the ground when the launched ammunition is launched is met. And when the ammunition to be launched is pushed, the gas release groove is emptied immediately, and conditions are created for the pushing plate to reach the gas release groove to release the gas quickly.

Examples:

as shown in fig. 1 and 2. The ammunition to be launched comprises an ammunition upper cover plate 2 with two directional lugs, and the upper cover plate is fixed on the ammunition body 4, so that the central connecting line of the two lugs can indicate the datum direction of the ammunition body. The transmitting cylinder 9 of the transmitting device comprises two transmitting cylinder positioning grooves and two special fuel gas discharge holes, and the central connecting line of the two transmitting cylinder positioning grooves can indicate the datum line of the transmitting device. The bottom end of the special gas discharge hole is the same as the bottom end of the launching tube positioning groove, and the width of the launched ammunition directional support lug is equal to the width of the launching tube positioning groove.

When the ammunition is assembled, the orientation lugs of the ammunition to be launched are arranged in the positioning grooves of the launching tube, and then the ammunition to be launched is consistent with the launching device.

When the propellant charge has been ignited, the pusher plate 10 pushes the charge being launched upwards under the action of the rifling pressure established in the combustion chamber 11, and the charge is less disturbed axially during the initial phase of firing due to the guiding action of the cartridge. When the ammunition is not completely separated from the cartridge, the ammunition is restrained by the cartridge, the push plate passes through the fuel gas discharge groove and the discharge hole, high-pressure gas in the combustion chamber is rapidly released through the fuel gas discharge groove and the discharge hole, the pressure of the gas in the combustion chamber is rapidly reduced, the thrust of the push plate on the ammunition is rapidly reduced, the power of the disturbance of the ammunition shaft is rapidly reduced or eliminated, the ammunition is not separated from the restraint of the cartridge yet and is launched by virtue of launching inertia, and therefore the disturbance of the ammunition shaft is greatly promoted.

Therefore, through the ammunition directional support lugs, the gas discharge groove of the cartridge and the gas discharge hole, the problems of ammunition reference direction fixing and indication are solved, and the stability of the ammunition shaft is improved.

Claims (1)

1. A design method of a short gun barrel for fixing the ammunition direction and improving the stability of the firing posture is characterized by comprising the following steps:

Step 1: the gas release groove and the gas release hole are arranged on the launching tube, so that the rifling pressure of the thrust chamber is reduced before the launched ammunition leaves the launching tube, and when the guiding constraint of the ammunition is not released yet in the launching tube, the disturbance of uneven thrust of the push plate to the bullet shaft of the ammunition is eliminated, and the bullet shaft of the ammunition is consistent with the launching direction;

step 2: adding a reference lug design to the ammunition to be launched; when the ammunition is installed, the datum lugs are placed in the fuel gas release grooves, so that a fixed angle is formed between the projectile datum line and the datum line of the launching tube, and the requirement of consistency between the datum and the datum of other system directions on the ground when the launched ammunition is launched is met; when the ammunition to be launched is pushed, the fuel gas release groove is emptied, and conditions are created for the pushing plate to reach the fuel gas release groove to release fuel gas.