Chapter 1560: Range test

In later generations, you can see that every time the Eagle Nation conducts military operations and external deployments, their soldiers are almost fully armed. The Eagle Nation soldiers in the Humvee have almost become a symbol of war. They all wear this. A vest with bulletproof inserted inside.
And these bullet-proof have also saved many of their soldiers' lives. Of course, many of these were produced in Han, and in later generations, Han was also a big country in this regard.
However, it is rare to see soldiers wearing such bulletproof in Han. Of course, there is a reason. Han is a big country and has the largest number of armies in the world. If all of them are equipped with this thing, it is definitely a high one-time investment. .
Moreover, behind the bulletproof board, there is a large amount of nylon soft protection, that thing has a lifespan, after a few years, the effect is poor, it can't play a protective role, and it has to be replaced.
The threat of a large-scale war erupting on land in Han is already very small. Therefore, there is no need for Han's army to equip it in large quantities. A small number of equipment is sufficient for elite troops.
However, there are so many enterprises in the Han State that produce them and export them all over the world. Therefore, if needed, they can produce large quantities of bulletproof for soldiers at any time.
Among all these plug-ins, the front is ceramic, and ceramics are divided into different types, the common ones are alumina ceramics, silicon carbide ceramics, and boron carbide ceramics.
Among the three types, alumina ceramics have the highest density, but have relatively low hardness, lower processing thresholds, and lower prices.
Therefore, it occupies the low-end market. Although it weighs half a catty, the price is only half of silicon carbide and one-sixth of boron carbide.
And now, Niu Guo started to work on this kind of material. After all, we must first solve the existence and confirm the performance.
The density of silicon carbide is moderate, and the hardness is relatively moderate. It belongs to the middle nature and has a relatively high cost performance. Therefore, silicon carbide ceramics will be used in pursuit of cost performance.
The boron carbide ceramic has the lowest density and the highest strength among these types of ceramics. At the same time, it has high requirements for processing technology and requires high temperature and high pressure sintering. Therefore, its price is also the most expensive of several ceramics and is absolutely exclusive to local tyrants.
(Low density means light weight and high strength, which means strong anti-strike ability.)
Different bulletproof inserts can achieve the same protection, that is, the weight is different, but if you carry one or two catties more, it will be better than a bullet?
Therefore, no matter how uncomfortable it is, such as being so hot in the desert area, if you go out around, you will have hot rashes on your stomach, but those Eagle Nation soldiers still have to cover themselves tightly.
Since we don’t need to worry about large-scale conflicts on the ground for the time being, we don’t need to consider the issue of bulletproof for the time being. They will definitely be produced in the future. However, the selection of bullet calibers has a major bearing on it. Therefore, we must Make it clear.
Of course, there is a grade for the flapper. If you want to block rifle bullets, you need a NIJⅢ grade board, which is more advanced than it, and of course the price is high.
Now, Qin Guan talked about the development of this part, and the conference hall fell into silence.
"Can it really block it?" someone asked.
"Practice is the only criterion for testing truth. If you have such doubts, why not go out and try now?" Qin Guan said.
In a confined space, Qin Guan didn't dare to do this. He was afraid of stray bullets. They were all clever minds and engaged in scientific research. Therefore, Qin Guan must do a good job in safety.
Go out and go to the shooting range.
At Qin Guan's suggestion, the meeting was suspended, and several buses pulled everyone to the shooting range.
Although Qin Guan wanted to personally wear this suit to let people shoot a target, no one dared to do so. Even the Xiucai wearing it himself was denied. Therefore, the final result was that the suit was put on by the target. On the target, and on the inside of the target, there is also a piece of meat, so that once it penetrates, you can see what it is like to enter the meat.
"We don't need pistols or something. Let's use the 5.56mm rifle most commonly used by Eagle Country first. At a distance of 300 meters, we will see the effect." Qin Guan said.
The bulletproof ability of the bulletproof flapper is not only related to bullets, but also related to distance. Three hundred meters is generally the limit shooting distance of small-caliber rifles. At this distance, many soldiers are inaccurate.
However, it is not difficult for the scholar to adjust the M16 rifle to the three-point shooting position.
Although like the AK47, it’s best to pour the bullets in the past, but countless examples have proved that there is no accurate head in burst shooting. After three rounds, the bullets will fly long ago. Therefore, although the early M16 rifles have Continuous shooting, but the current M16A2 only has two methods, either semi-automatic shooting or 3-round burst shooting.
Semi-automatic single-shot shooting, no power, it is better to shoot directly at three points, and shoot three rounds at once.
"Suddenly." Different guns have different shooting sounds. The sound of M16 has a poorer texture. This kind of sound does not sound that scary.
After three sounds, the Xiucai stopped shooting, and then, the reporter directly carried the target and came over.
Everyone needs to see how it turns out.
There have been three holes in the front vest cloth. Inside these three holes, you can see three holes. Those are formed by broken ceramics. If you use your hands to dig out, you can also take out black powder. Come, and when I opened the back, the bullet did not penetrate, and I could see that the piece of meat was intact.
"Impossible, how is this possible? This protection is too bad, right?" Someone asked puzzledly.
"One shot, the ceramic may be broken, how can it block the second and third shots?"
"Because the ceramics are small pieces and stick to them piece by piece, one shot will only break one piece of ceramic." Qin Guan said, "Unless it is a sharpshooter, the second shot hits the bullet hole of the first shot. Otherwise, it can continue to save its life."
They must see them with their own eyes. After all, this bulletproof flap is NIJIII-level.
There are different standards for bulletproof flaps, among which Niu Country’s NIJ standard is popular worldwide. This Class III can withstand bullets with a muzzle velocity of about 847 m/s and a warhead weighing 9.6 grams.
And now?
The speed of the M16 rifle ejected from the muzzle was only 835 meters per second. After flying over 300 meters, the speed has been reduced to 635 meters per second. Even the upper level can be completely blocked.
Not to mention that the bullet head of the M16 rifle is lighter, weighing only 4 grams. When it went up, the ceramic was broken, and the bullet was also broken. There is no lethality at all, and the back is flat, and it is not worn at all. Signs of penetration.
"This doesn't explain much." At this moment, a voice said: "Even if there is no breakdown, this kind of impact can hurt the internal organs. We are on the battlefield, wounding an enemy, more than killing An enemy is more effective."