What are the characteristics of QJG02 single-tube anti-aircraft machine gun?

The maneuverability of weapons generally includes two aspects: weapon maneuverability and fire maneuverability. The weapon maneuverability of 14.5mm single-barrel antiaircraft machine gun is mainly reflected in its simple mechanism, small number of parts to be disassembled and carried, and light weight. The maximum carrying weight of a single piece is only 16kg. In terms of fire maneuver, its altitude and direction machine is flexible to operate, and can quickly capture the target while fixing the altitude and direction. Equipped with foot brake mechanism, it is beneficial to the tactical performance.

But at present, the large-caliber machine guns of military powers are mainly used in vehicles. QJG02 14.5 mm single-barrel anti-aircraft gun is mainly used for carrying, which not only affects the maneuverability of weapons, but also affects the quantity, fire density and sustainability of ammunition carried. How to overcome these shortcomings and foster strengths and avoid weaknesses will be an important topic for weapon use researchers.

(2) There are many kinds of ammunition with great power.

14.5 mm single-barrel antiaircraft gun can use all kinds of 56-type 14.5 mm machine bullets, and two new types of bullets, namely shelling and deflagration armor-piercing, have been specially developed, which greatly improve the combat effectiveness of weapons.

(3) Good shooting accuracy.

Generally speaking, the size, weight and structure of the machine gun frame directly affect the firing accuracy of the machine gun. On the premise of maintaining good shooting accuracy, many technical problems need to be solved in order to greatly reduce the weight of weapons. Large caliber machine guns have made a successful way to lose weight in China. 12.7mm machine gun has been reduced from more than 80kg of type 54/kloc-0 to 93kg of type 541,56kg of type 77, 40kg of type 85 and 26kg of type 89, but the firing accuracy has remained basically unchanged.

14.5mm single-barrel antiaircraft machine gun also adopts dynamic characteristic matching technology to reasonably match the weapon's radio frequency, natural frequency and other characteristics, so that each projectile basically flies away from the muzzle under the same muzzle vibration (position, speed and acceleration), thus ensuring better continuous shooting accuracy.

(4) Long barrel life.

The criteria for scrapping the barrel are mainly that the initial velocity drop rate and the projectile dispersion density are not greater than the specified value. Due to the ablation of gun barrel by high temperature and high pressure propellant gas during shooting, the inner bore of gun barrel will be seriously worn and deformed. Generally speaking, the highest bore pressure area of the barrel is the most severely ablated, and the ablated barrel can not be sealed well, and some gunpowder gas overflows between the projectile and the barrel, which leads to the decrease of the muzzle velocity of the projectile. The ablation of the front end of the barrel has the greatest influence on the attitude of the projectile when it exits the muzzle, which is the key factor leading to the large dispersion of the projectile.

The muzzle velocity of 14.5 mm machine gun is as high as 980 ~ 995 m/s, and the barrel is seriously ablated. Its service life is always a technical problem that puzzles the light weapons industry. Whether it is Type 56 14.5 mm anti-aircraft machine gun or Type 58 14.5 mm anti-aircraft machine gun, its barrel life has not reached the index requirements. According to the specified number of life bombs, its initial velocity often drops by more than 22%.

Therefore, 14.5mm single-tube anti-aircraft machine gun adopts cold precision forging barrel and new laser strengthening technology to treat the front and rear sections of barrel, which improves the adhesion quality of chrome plating layer of barrel, solves the ablation problem of barrel well, and greatly prolongs the life of barrel, reaching 3000 rounds. At the end of life, the drop rate of the initial velocity of the projectile is less than 15%.

(5) Work reliably in various environments.

Although the caliber of the14.5mm machine gun is only larger than that of the12.7mm machine gun10.8mm, the muzzle kinetic energy of the former is almost twice as much as that of the latter, and the resulting recoil energy is much larger than that of the12.7mm machine gun. Traditionally, in order to absorb recoil energy, 14.5 mm machine guns generally adopt the principle of automatic tube withdrawal. The designer of 14.5mm single-tube antiaircraft machine gun boldly applied the principle of air guide automation, and ensured the reliability of the weapon in various environments by adjusting the size of air guide holes.