What kind of ammunition is a countersunk bullet and how did it come from?

What ammunition is a countersunk bullet? How did it come from?

Countersunk projectile is a new concept artillery ammunition that has swept the world in recent years. In fact, in the 1950s, the US Air Force wanted to make the ammunition of air guns and machine guns smaller and lighter, so it first put forward the concept of countersunk bullets.

Countersunk ammunition is also called buried ammunition or sleeve ammunition. From the name, we can know that its ammunition is packed in the propellant of the casing, and its overall appearance is cylindrical. This model can make the launched artillery start faster and better store the kinetic energy of the subsequent reflected armor-piercing projectile.

In addition, the ammunition is placed in the barrel, and the propellant is filled around the ammunition, which not only saves space, but also shortens the length of the body itself, making it more convenient for cars to carry artillery. The key index in armored combat vehicle is the performance of its gun system, which is related to the combat effectiveness of armored vehicles.

More and more advanced composite armor with excellent bulletproof performance was born, and the defense function of armored combat vehicles became stronger and stronger. The front armor mounted on infantry fighting vehicles can defend against 25 mm or 30 mm sub-caliber armor-piercing bullets fired by machine guns.

In order to improve the power of armor-piercing projectiles, the most convenient and direct measure is to expand the caliber of artillery and launch more powerful armor-piercing projectiles.

The larger caliber of artillery means that the overall volume of artillery shells will become larger, so it is necessary to change the storage of ammunition and the size of corresponding artillery, and then the volume of armored combat vehicles will become too large, which will cause many problems and have a certain impact on the combat capability and viability of armored combat vehicles.

Because of this situation, people hope to develop a new type of chariot gun system with enhanced armor-piercing projectile power without excessively increasing weight and volume.

The system should not be too heavy, small in size and strong in battlefield survivability. The most important thing is that it can hit very powerful targets. In this case, it is "light and heavy firepower."

The concept of countersunk projectile was born. In traditional ammunition, the main part of the body is exposed, and only the tail end of the body will be connected with the propellant cartridge. It seems that the head of the projectile is sharp and protruding.

In contrast, the countersunk bullet has no sharp warhead and is smaller, which shortens the overall length of the ammunition and is convenient to place. Because the size of the gun system has become smaller, it can make the car body and turret have more space to store more shells.

The length of the countersunk projectile has become shorter, but its range and power have not weakened, and even increased. The main reason is that although the length of the countersunk projectile is shortened, the diameter of the casing is also increased, and the density of the propellant filled in it is also increased, which will increase the muzzle velocity and range of the projectile and enhance the power of the chariot gun.

The striking power of the 40mm tank gun with countersunk head is 15% higher than that of the ordinary gun, the armor-piercing power is three times that of the traditional 30mm ordinary armor-piercing projectile, and the target-damaging ability is six times that of the traditional 30mm ordinary Grenade.

Although China is a little late in the research and development of countersunk projectile, it is still very powerful. At present, the research and development of China countersunk projectile is world-class.

At the Zhuhai Air Show in 20 16, China Ordnance Industry Group had already demonstrated their CS/AA5 multifunctional 40mm countersunk gun system. This rocket launcher system is configured on an 8×8 wheeled armored chassis.

The gun system of this kind of countersunk projectile is equipped with three kinds of countersunk ammunition, namely, sub-caliber tail stabilized armor-piercing projectile, shaped charge armor-piercing projectile and anti-personnel explosive Grenade. Not only that, but also front ammunition can be installed. On the whole, the performance of this kind of countersunk projectile is excellent.

Only Britain put its own countersunk gun system into active service. In 20 18, Britain took the lead in equipping Ajax reconnaissance vehicle for the 40mm countersunk weapon system developed by Britain and France.