The slender core of the projectile flies forward, and the tail is open, maintaining the balance of the projectile body, as if it were an arrow radiating from ancient times.

In previous times, when people were just learning to use bows and arrows, they had already discovered that slender arrows, with a few feathers on their tails, would become more stable, and since then, it has been used for thousands of years.

Later, in the era of guns, the bullet was spherical at first, and after flying out, it floated around, which was very unstable, which troubled a lot of firearms designers.

Since then, the gun has begun to exert great power, the inside of the gun has rifling, and when the bullet flies out, it rotates along the rifling to stabilize its own bullet body, even if it is two kilometers away, it can also have a relatively high accuracy. At the same time, the spherical projectile has gradually evolved into the shape of a pointed cone, which is also the result of aerodynamic research.

From then on, almost any firearm and artillery was rifled, even the guns of huge battleships.

However, after the end of World War II, in the development of tank guns, smoothbore guns began to gradually become the mainstream, after the rifling was canceled, the shells could not be resisted in it, so they flew faster, and the muzzle velocity when the muzzle was out of the muzzle would be higher, which was an important indicator for armor-piercing shells.

In the process of piercing the armor, the slender rod has become the mainstream, and this kind of rod piercing rod must not rotate at high speed, so the way of re-adopting the tail to stabilize it can be described as a special case in the development of weapons.

The slender projectile rod relied on the four tail fins in the tail to maintain the stability of the flight, and the distance of 1,500 meters could not be used for a second, and then, the warhead steadily hit the first piece of homogeneous armor steel 100 mm thick!

The sharp warhead smashed into the armor steel, and the moment the warhead and the armor steel collided, a hard-hitting battle began, and the huge kinetic energy was converted into internal energy, and the temperature rose rapidly in a short period of time! The warhead of the depleted uranium alloy was also in the collision, and the debris flew sideways, and then, the dust, suddenly burned!

The temperature of the collision has long exceeded thousands of degrees, and even the armor steel is melting! And the dust is even more burning.

If you are a layman, when you look at the launch of the shell, you will always sigh for the huge power of the shell, and then leave a huge crater to sigh, but that is the result of a high-explosive grenade, for an ordinary armor-piercing projectile, its armor-piercing process, and it will not appear to have any vigorous process, just like a fork forked into the soil, at most splash some mud, as for the magnificent scene, it is not the power of the armor-piercing projectile itself, but the explosion of ammunition inside the tank.

What now?

Now there is a strange scene, the armor-piercing bullet actually burst into flames in the process of armor-piercing!

The human eye is not a high-speed camera, and you can't see the whole process, at this time, in everyone's field of vision, only the first steel plate was seen, and it trembled violently, and then, a big fireball came out of the middle of the steel plate, and instantly occupied the entire steel plate, as if it was a fire in the mouth of a trick, it seemed that it was full of a strange taste!

The bullet core had easily passed through the first steel plate, and then, in the same situation, it happened on the second steel plate, which also burned in a violent collision!

The third piece, the fourth piece, in fact, the armor-piercing bullet in the process of armor-piercing, the speed is quite fast, although the four flames are rising in turn, in fact, in the eyes of people, it is only a momentary thing, just like a firecracker, after lighting the twist, the firecracker crackled, and now, these steel plates, like firecrackers worn together, were all ignited!

Everyone's eyes widened, no wonder they wanted to place these armor steel plates like this, it turned out to be for everyone to show ah, this scene, it was really spectacular!

Without blinking a single eye, everyone held their breath and watched the armor-piercing process of the armor-piercing bullet.

The fifth steel plate has already burned, and, from the back of the steel plate, there are flying sparks, indicating that the fifth steel plate has been broken through.

This has reached a penetration depth of 500 millimeters, in fact, this way, it is more difficult than directly penetrating the thickness of 500 millimeters, because there is a gap in the middle, even if it is air to fill this gap, it can be said to be a gap armor, and the bulletproof ability will be better.

The warhead will go through a series of processes of sudden impact and sudden relaxation, which is certainly more complicated than passing through it in one go.

The sixth steel plate has also been burned, but its combustion looks much smaller, because by the time of the last piece, the kinetic energy of the core of the armor-piercing bullet is already very small, so the energy of the impact is insufficient, and the effect is a little worse.

"How could it be on fire?"

Now, seeing that the armor-piercing process has ended, after penetrating the thickness of five hundred millimeters, the sixth steel plate has been continuously pierced, and the big guy is already very satisfied with the performance of this armor-piercing projectile, and the scene is so spectacular, this scene lingers in everyone's minds, and I don't know how long to recall.

I was so impressed.

This question has also been raised.

I've never seen burning before, and I may have seen a steel plate melt under the impact, and the contact parts become molten, but it is absolutely impossible to see a fire burning on the steel plate.

What's going on?

"That's No. 4 special alloy dust burning." Qin Zhenhua said: "Now, please send out the fire truck of our base to spray water in that space, by the way, take a bath in our car." ”

At this moment, although Qin Zhenhua said it very casually, this operation is necessary.

Everyone reacted that this is a form of protection after the equipment passes through the problem area, and it will only appear under the conditions of nuclear, biological and chemical warfare.

"This is Pandora's box." On the side, He Lao sighed.

When Qin Zhenhua talked about these operations, He Lao had already thoroughly understood. The use of this material as a ram for armor-piercing projectiles is advantageous, because it can significantly increase the depth of armor piercing, which is a nice thing, but at the same time, it also has disadvantages, because in the process of armor piercing, there is radioactive dust, which after combustion, will drift even farther. After all, depleted uranium is uranium!