My son-in-law is engaged in military industry, all dogs in the village are equipped with guns

Chapter 61: Muffled Silence Doing Big Things!.

Chapter 61 Muffled and do big things!

Under the gaze of the bigwigs, Zhang Jianguo stood up.

He is a technician, and Li Fu and Qian Gouyu are both mechanics, and this kind of comparative theory is something he knows better.

Although he was also a little dizzy in the face of so many bigwigs, he forced himself to calm down when he thought that this gun might be the only hope to save Qi Wei.

“Chiefs, and leaders.”

He glanced at the military bigwigs, as well as Academician Duo, the heads of the four major factories, and said self-deprecatingly: “Since the designer of this gun is not there, I can only introduce the basic parameters of this gun to everyone as much as possible.” ”

“First of all, the gun has a length of 935 mm in its full-length state, an empty gun with a full weight of 2.7 kg, a caliber of 5.8 mm, and a firing of 5.8×42 mm rounds.”

Everyone looked at Zhang Jianguo in surprise, the length of this gun is not much to say, 935 mm can only be said to be decent in a supported rifle.

But weight 2.7 kg?

This indicator is a bit amazing.

You know, an ordinary police pistol weighs almost a kilogram. And the famous box cannon, that is, the thing that often appears in the anti-Japanese war TV series, weighs nearly two kilograms.

You can imagine what an amazing concept a 2.7 kg rifle is.

For comparison, the weight of the 81 bar is 3.9 kg.

Firearms are light in weight and obviously have great advantages in carrying and using. The speed of the first shot will be greatly increased, the muzzle pointing will be more flexible, and the soldier will be less likely to get tired.

After all, it is normal for soldiers to hold the gun position for four or five hours on the battlefield, and those who have really experienced this experience will understand how painful it is to carry a few kilograms of weight on their hands at all times.

In addition, the rifle weight is reduced, which means that soldiers can carry more on other necessary supplies. For example, three days’ rations, like two magazines.

In general, helping soldiers lose weight with the necessary equipment is an eternal subject. From firearms to rations to all kinds of materials for survival in the field and in the field, they are trying to lose weight.

“Why is it so light?”

The director of the factory opened by Xu Hai, and the Handong Ordnance Industry he represented made a rifle with a support, the length was basically the same as that of the seventh workshop, but the weight was 3.5 kg, which was almost a grade with the 81 bar.

“Because this gun uses a lot of aluminum alloy materials, as well as engineering plastics, the director of the factory.”

Zhang Jianguo was slightly embarrassed.

Seriously speaking, Xu Hai is his boss, because the seventh workshop itself is under the jurisdiction of Handong Ordnance Industry.

“Don’t worry, the structural strength is no problem.”

He saw the hesitation on the faces of many people present, and directly dispelled everyone’s doubts,

“The engineering plastics were provided by the SWAT team, and as for the aluminum alloy plate, it was obtained by Qi Wei. He said it was a so-called space-grade aluminum alloy. We have tested that the hardness even exceeds that of steel plate. ”

Aerospace-grade aluminum alloy is actually just Qi Wei’s joking statement, because in the later life, what things want to blow themselves high, will hang a space-grade name, what aerospace-grade aluminum alloy doors and windows and the like.

But at this time, Zhang Jianguo said it so cautiously, which made everyone’s eyebrows jump.

Aerospace grade aluminum alloy?

It sounds extremely tall, this year, the first remote sensing satellite of the Dragon Kingdom has not yet been launched, and I heard that the materials are still being tackled, because it is impossible for every satellite to be made of gold like the satellite that can sing to the world.

There’s no way around it. Aluminum metal is a magical metal, and it was not until the era of electrification that aluminum metal was smelted on a large scale, because aluminum smelting must be done by electrolysis. Therefore, the development of aluminum metal-related processing and materials is quite lagging behind other metals, especially Longguo.

In contrast, copper smelting and alloy technology has existed in the spring and autumn, iron appeared in the Qin Dynasty, and steel first appeared in the Han Dynasty, that is, the legendary hemp steel, a modern thing for making guns and cannons.

I heard that the gang of the Dragon Academy are already bald for this, so if we use this thing to make guns, will it be too wasteful?

However, the baldness on the side of the Dragon Academy is their problem, anyway, the specific group of soldiers does not understand. Commander Chen spoke excitedly: “What about accuracy and range?” ”

All commanders stared at Zhang Jianguo without turning their eyes, accuracy and range were very important parameters, and if this gun was reduced in weight, it would inevitably decrease in accuracy.

“Effective range, 400 meters. Maximum direct shooting distance, 400 meters. As for the dispersal of bullets…”

Zhang Jianguo looked at Qiang Guanjie, the bullet walk is a very professional data, the test conditions are also relatively strict, the seventh workshop does not have such capabilities, so this part is completed by the SWAT team.

“Bullet dispersion, R50 is 3.37 cm.”

Qiang Guanjie reported a data, to be honest, the reason why he came to the venue, this number gave him at least half of his confidence.

And the next second, an exclamation sounded: “How much? 3.37 cm? ”

The exclamation was made by the director of Plant 216, Wang Zhiqiang. His eyes were wide open, and through his glasses he looked so huge that he almost suspected that he would pop out in the next second.

“Are you sure?”

He stared at Qiang Guanjie deadly, his face full of doubt.

It was not only him who was suspicious, but also the heads of other factories, and even several military bigwigs, who were full of inquiry at this time.

They did not suspect that Qiang Guanjie was lying, but they thought that there might be some mistake in the testing process.

The reason is simple, the problem of the dispersal of bullets is a huge headache for everyone.

In general, the bullet dispersion of the test firearm is to fix the gun to the gun frame and shoot a 100-meter target with a single point fire. Shooting 3 to 5 rounds and then measuring the angle at which the bullet deviates from the bullseye is known as MOA.

MOA is an angle, and distance obviously does not have much effect on the angle. This is how the beautiful country uses to measure ballistic dispersion offset.

Another way is to shoot 20 shots at three 100-meter targets, and then calculate the average value, which is called R100.

R100 is usually larger because of factors such as the processing of the bullet, the spread of the firearm at high temperatures, or the so-called outlier bullet on the barrel copper.

R50 draws a circle outside the dense impact point to ensure that the number of bullet holes in the circle is as large as outside the circle, and the circumference is the same distance from the nearest two bullet holes inside and outside the circle, and the radius of this circle is R50.

R50 is generally one-third of R100, so knowing R50 can basically understand the law of bullet dispersion of a gun.

It should be noted that although the MOA and R50 data can be converted, they are not comparable. Because the beautiful country only fires 3 to 5 rounds, while the dragon country fires 20 or even 60 rounds, fools know that the spread of cold guns is much smaller than that of hot guns.

The 81 bar was developed by Wang Zhiqiang’s 216 factory, and the R50 of the 81 bar is 4.9 cm.

In addition, Plant 216 is developing a large sniper, that is, the later 88 sniper, the R50 of this big sniper, is 2.9 cm.

The accuracy of the 88 sniper is notoriously garbage, once creating a tragedy in which a single shot killed a hostage. Although the tragedy was more due to the deflection of the bullet caused by shooting through the window glass, the accuracy of the 88 sniper itself was obviously responsible. There are even many people jokingly calling it 88 spray.

However, the 88 sniper is, after all, a sniper rifle, and it is also a bolt-action sniper rifle!

Although the accuracy is poor, it can still ensure that an egg is hit at a distance of 100 meters, which is still under the premise of not using special sniper shells, because the Dragon Kingdom basically does not make special sniper bullets.

And the gun made in the seventh workshop can actually reach an accuracy of 3.37 cm, which has reached the level of a semi-automatic sniper rifle, or a precision shooter rifle!

Dumped 81 bars on a street!

And 81 bar, one of its own technical characteristics, is high precision!

This is the reason why Wang Zhiqiang was shocked and even doubted.

Accuracy is closely related to the barrel material and processing accuracy.

Although he didn’t know what the seventh workshop looked like, but looking at the reaction of Xu Hai and others before, it was obvious that the level of craftsmanship would not be too high, and it was the same level as the 81 bar.

How can it be so much higher than 81 bars?

As for the effective distance of 400 meters, the horizontal firing distance is also 400 meters, this is not much to say, the advantage of small-caliber bullets is that the trajectory is straight, although this distance is also a bit awesome, but it is still acceptable.

And Zhang Jianguo was full of pride at this time!

He was lucky to be able to participate in the production of this gun!

He even felt that the backward technology of the seventh workshop led to the transformation of the state-run into a private sector, which was a kind of luck!

Because it was the national reform that allowed the seventh workshop to usher in the director who made everyone raise their eyebrows!

“We also did a test in the seventh workshop, which is not very accurate, but the data is similar to that measured by the SWAT team.”

He spoke proudly,

“Because the barrel of this gun uses a cold-forged heavy barrel, in addition, the air-conducting structure used in this gun is air-blowing.”

“Airblowing? Have you conquered the air-blown air conduction structure? ”

The speaker this time was Dolly, as a person who has been immersed in the small arms industry all his life, he is very familiar with this industry, including many cutting-edge Western technologies.

The heavy barrel does increase the rifle’s firing accuracy, including the dispersion after the barrel heats up. Therefore, sniper rifles and machine guns use heavy barrels, and ordinary squad platoons that are not equipped with snipers are actually directly equipped with machine guns and scopes for direct squads, making cameo appearances in precision shooter rifles.

But the lifting of the heavy barrel will not be so great, and the real key is obviously this so-called air-blown air guide structure.

The so-called gas conduction structure is the structure of using the high-temperature gas after the bullet is fired to push the gun back, complete the shell throwing and reloading. This structure has a great impact on accuracy.

Because the air-conducting structure will exert a sudden external force on the barrel when it is in action, causing the barrel to jump.

Shake into a dog.

Maozi’s AK uses long-stroke air conduction, and a complete piston system moves back and forth greatly when fired, so the degree is greatly increased as soon as the shot is fired.

The 81 bar of Longguo uses short-stroke air conduction, and the distance of the piston system is only two or three centimeters, so it is fine, but the short-stroke air conduction is still not as high as the air blowing air conduction. Because the air-blowing air guide cancels the piston part, but directs the hot gas back to the bolt part, and pushes the bolt part back with air pressure.

This will not only increase the accuracy of the gun when firing, but also increase the rate of fire, since there is less a piston back and forth operation.

In addition, the firing range will also be increased than that of the piston type, because the air hole is opened in the barrel, and the air hole of the piston type is much larger than that of the air blowing type, which means that a lot of energy will be lost.

Of course, this method will cause carbon deposits in the chamber part of the gun easily, because the bullet propellant will not burn off completely, and some of the residue will enter the bolt with the air pipe.

Wipe gun pseudo.

But even if you enter the bolt, it doesn’t really matter, the dragon country has always been very attentive to the maintenance of firearms, and one of the daily activities is the real key is that the dragon country scientists do not know the specific structure of the air-blowing air guide. Although I know the general principle, I don’t have time to solve this problem. Because the Type 81 has only come out for a few years, the short-stroke air guide has not been thoroughly eaten so far, and there is still a lot of room for improvement, not to mention the more advanced air blowing type.

Unexpectedly, this problem was actually solved by the seventh workshop!

“Snap…”

A round of applause suddenly sounded, it was Director Zhang.

His face was already full of relief at this time, and his eyes looking at Zhang Jianguo and the others were full of admiration: “An automatic rifle with the accuracy of a sniper rifle, the rate of fire of an automatic rifle, and the range of a squad machine gun!” ”

“You Seventh Workshop, it’s really muffled and silent to do big things!”