It's really light to pick up, and it's just not proportional to its thickness and size! Since this is a small one, the weight is two and a half pounds at most! It is about the same weight as the GK80 helmet made of rare earth steel in China, but the protective area is larger, and because it is a non-metallic material, it is particularly comfortable to touch.

In fact, non-metallic helmets have been made in China, such as pilots' helmets, which are made of fiberglass, which is not only heavy, but also very weak...

"The design of our helmet is very advanced, for example, this sling, we use a three-point sling, which is more securely fixed, pay attention to the big guy, this strap is not hung under the neck, but on the chin, just like this."

Qin Feng made a demonstration while introducing.

The helmet in Pan Daqing's hand was buckled on Qin Feng's head, and then began to tie it, and when the strap hung on his chin, he felt a little uncomfortable: "Why don't you hang it around your neck?" ”

"Because it's safer, everyone should know the reason why artillery helmets are never strapped, right?"

In order to avoid the helmet from falling, there is a strap underneath, which is generally fixed around the neck, but the artillerymen do not dare, in case of a bang, the hat is lifted off by the air waves, and the strap around the neck will directly strangle the throat, and there are really unlucky people who sacrifice like this.

So, the helmets of the new generation all put the lace-up on the chin, which is the stiffest here.

Li Runzhu and Qin Leader followed Qin Feng's example, tied the sling, and felt uncomfortable at first, but after walking back and forth a few steps, they felt that it was quite stable.

"For helmets, there are multiple technical indicators, such as protection area, weight, comfort, etc., but the most important thing is still the protective force, and our helmet has reached the five-level protection level."

"What does level five mean?" Pan Daqing became a model, and was introduced by Qin Feng, he was unhappy in his heart, but he didn't show it on his face, he was just listening carefully, looking for loopholes in Qin Feng's words.

What is Level 5?

Of course, it is a bulletproof standard released in 2010! The first-level anti-64 and 77-type pistols, the second-level anti-54 pistol, the third-level anti-79 submachine gun pistol cartridge, the fourth-level anti-79 submachine gun steel core bullet, and the fifth-level anti-56 submachine gun, however, this level is not yet available in China!

"This is a foreign standard, so let's use the standard, the V50 value is 700 meters per second."

The V50 value is the international standard for bulletproof capabilities, specifically, it is to use a hypotenuse cylinder with a mass of 1.1 grams as a projectile, adjust different charges to achieve different launch speeds to test the bulletproof equipment, of which 50% of the projectile penetrates the bulletproof equipment, this speed is the V50 value, it is the most authoritative data.

The V50 value of the GK80 steel helmet is 366 meters per second, so it can only protect against shrapnel, at most against direct pistol bullets, the weight of this helmet in front of you is about the same as the GK80 helmet, but the protection has doubled!

"In other words, it can protect against a direct 56-punch shot?"

"56 straight shots within fifty meters can be completely blocked." After Qin Feng finished speaking, he glanced at the helmet on Pan Daqing's head again: "Pan Gong, we talked about it just now, you have to do me a favor, right?" ”

"That's nature." Pan Daqing nodded.

"Now, we've built three prototypes, and it's time for a bulletproof test." Qin Feng continued: "Look, that is, you are the most suitable here, wait a minute, I'll find a 56 Chong, shoot you in the head, and show our leaders the protective power of the helmet." ”

Shoot yourself in the head and test your protection? Pan Daqing's face changed: "Qin Feng, what are you talking nonsense, what if you break through?" Even if I don't penetrate it, what should I do if the impact of the 56-punch bullet is so strong that it breaks my cervical spine? ”

"I can guarantee that our helmet can not only prevent the middle power bullet, but also have enough cushioning to protect the neck from breaking, but there is no basis for words! We still have to use real people for experiments. After Qin Feng finished speaking, he glanced at Pan Daqing: "Pan Gong, you shouldn't be scared, right?" Still a gentleman? ”

Li Runzhu watched with interest from the side, of course he knew that Qin Feng was teasing Pan Daqing, Pan Daqing must have come over to Qin Feng in private to ask for skills, and now, Qin Feng was taking advantage of the good time when the big guys were present to make it difficult for this Pan Daqing.

"yes, if the helmet protects against the bullet, but the impact breaks the neck, it won't work." Leader Qin nodded: "Xiao Feng, how can you be sure to protect your neck?" ”

"Take the M43 intermediate power rifle bullet used in the AK rifle as an example, the kinetic energy of the bullet flying out of the muzzle is about 2,000 joules, if these kinetic energy are directly hit on the head, the neck is estimated to be unsaved, but our helmet is not directly in contact with the head, and there is a layer of sponge in the middle."

Qin Feng introduced to everyone: "In this way, the kinetic energy of the 2,000 joule bullet pushes the helmet first, and the helmet moves back to drive the sponge interior cushion inside, and the cushion slowly releases the force to the head, and the force will be greatly reduced at this time. ”

The helmet bulletproof has no meaning, even if it is prevented, it will be taken to break the neck, these are the old yellow calendars, in the battlefield of later generations, the Yankees have the most right to speak, often hit on the helmet by the bullet from the opposite side, and then cover their heads and scream, lie back to see the injury, and find that in addition to a hole in the helmet, debris hangs everywhere, there are no injuries, at most some dizziness, just a few minutes.

Needless to say, the intermediate power bullets, some were even hit by snipers and machine gunners, and they were still prevented!

Wait, the protection is not so strong, how can you still prevent it? Because of ricochet, of course! The bullet hit, slipped away with a snap, and the energy of the bullet did not act entirely on the helmet.

Yankees like to buy protective equipment imported from the East, which is cheap and has strong protection, which is definitely the first choice!

Now that Qin Feng took out this helmet, it has reached the level of the QGF11 bulletproof helmet of the later generations, and there is no problem with the intermediate power bullet at close range.

But Pan Daqing doesn't know.

After Qin Feng finished introducing these theories, he looked at Pan Daqing.

"Pan Gong, do you understand?"

"Of course I do!" Pan Daqing was annoyed in his heart, the college students of Capital University are amazing? Who doesn't know this knowledge!

"Now that you understand, you should have faith." Qin Feng said: "You stand up, don't worry, I guarantee you're okay, who is that, did 56 Chong bring it?" ”

Leader Qin frowned on the side, it is against the regulations to do this, during the weapon experiment, it is necessary to ensure the safety of personnel, and shooting at the human body is absolutely not allowed!

However, why didn't Lao Li stop it?

"Qin Feng, if you want to try it yourself, I won't fall for you! I have no grievances with you, don't I just want you to contribute your technology to our military system? You're trying to hurt me! ”