Among the countless flowers, Qin Xiaowei is the most dazzling one.

Although Shrike stayed at Baiyun Factory for less than 8 months, Qin Xiaowei benefited a lot. Not only did he fully inherit the unique firearm structural style of Shrike's ball locking mechanism, but he also actively explored the best automatic matching method for firearms.

The general machine gun in front of him is the culmination of his accumulated experience over the past few years.

"Success?"

Watching Zhu Yingqi firing sometimes in bursts and sometimes in bursts, he finally asked the key question.

"Yes!" Qin Xiaowei was as concise as ever.

"Gas or barrel recoil?"

"Semi-free bolt action!" Qin Xiaowei was still plain and concise, but Bai Yi was slightly moved. In terms of the automatic principle of firearms, gas-operated and barrel-recoiled are the two most common automatic methods used in automatic firearms.

Of course, they are also the two easiest ways to get started.

Because of this, Bai Yi feels that Qin Xiaowei's universal machine gun may be some kind of deformation of these two automatic methods, because in his opinion, as a newcomer with almost zero gun-making experience, Qin Xiaowei's most reliable breakthrough is to mature.

Technically, use and improve it.

Just like Tang Jichen's automatic grenade launcher, it follows this path. Whether it succeeds or not depends on whether it succeeds or not. The key is not to make too many mistakes.

But Qin Xiaowei obviously went against ordinary people and directly adopted the semi-free bolt automatic principle.

This kind of automatic method was nothing unusual a few decades later, but it was unprecedented in the early 1950s.

Therefore, in the mainstream firearms design world at this time, this automatic method has always been regarded as a heresy, especially in the field of automatic and semi-automatic firearms. The semi-free bolt automatic principle is a taboo for designers.

Because in the eyes of mainstream firearms designers, the hypothetical automatic method born out of the principle of full-free bolt-action automatic can only be impressive on pistols at best, and effective on submachine guns at most.

As for more powerful semi-automatic and fully automatic firearms, this automatic method is simply not capable of withstanding the continuous impact of high-power ammunition.

Because of this, in the eyes of firearms designers from various countries, this automatic principle is no different from a tasteless thing that is a pity to throw away. It is often shelved after a few glances, and is never really applied in practice.

However, others don't know it, but Bai Yi knows that the principle of semi-free bolt-action automatic is not useless, but a shining technology tree with great potential.

What Bai Yi didn't expect was that Qin Xiaowei in front of him seemed to have lit up a branch of this technology tree earlier than the Europeans.

"How?"

Whether he is stunned or surprised, Bai Yi is really happy for Qin Xiaowei, and at the same time he is also curious about how this guy who is usually a dull man does it. However, Bai Yi's curiosity is doomed in the face of Qin Xiaowei's concise and concise words.

He was going to hit his head and bleed, because Qin Xiaowei's answer was very concise: "Forget it!"

"I asked you how you calculated it!"

"Pen, paper and calculator!" This time he said a lot and was very detailed, but Bai Yi was really going crazy. He was asking about the steps and methods of calculation, but Qin Xiaowei was talking about tools for calculation.

However, looking at Qin Xiaowei's flushed face and the knowing look in his eyes, Bai Yi could only sigh helplessly. He was fine as a student, but he was too boring, too shy, and too shy, otherwise he would not have placed Qin Xiaowei in

A simple attack on a branch of the factory, with a person like this, Bai Yi wouldn't trust him anywhere.

So Bai Yi simply stopped talking nonsense to Qin Xiaowei and shouted directly to Tang Jichen: "Bring the things here!"

Tang Jichen couldn't wait for a long time. As soon as he called her, he immediately ran over with a smile, handed the stack of calculation scripts in his hand to Bai Yi, and asked knowingly: "How did you know I took something?"

"If he doesn't have you with him, he can hit a telephone pole when he goes out. How can he come to me? Okay... I'll help you look at the design draft later!"

Seeing that her little trick was seen through, Tang Jichen couldn't help but stick out her tongue. She was scolded by Bo Yi. How could she be willing to accept it? Naturally, she wanted to ask Bo Yi what went wrong with her automatic grenade launcher.

.

But if she came to the door rashly, a scolding would be inevitable, so she pulled Qin Xiaowei because Tang Jichen knew very well that Qin Xiaowei was highly regarded by Bai Yi. In addition, he had been specializing in general machine guns for these years, so he pulled Qin Xiaowei.

Definitely insurance.

In fact, it was indeed the case. Qin Xiaowei's performance was as amazing as ever, and Tang Jichen also found an opportunity. However, Bai Yi had no intention of smiling like a little fox. After getting the calculation script, Tang Jichen just weighed it lightly.

, you will know that there is definitely a lot of content inside.

Looking through it, it turns out that before Qin Xiaowei determined the automatic principle of semi-free bolt action, he had tried other automatic methods. But after a series of unsatisfactory attempts, he rejected those automatic methods one by one, and finally only had semi-automatic.

The automatic mode of the bolt is consistent with the precise, smooth and efficient characteristics of the ball locking mechanism.

If an ordinary person reads this calculation manuscript, he will definitely have a terrible headache, because it is almost full of dense numbers and calculation formulas. But who is Bai Yi? His own mathematical attainments are not bad, not to mention that Qin Xiaowei uses

The finite element given to him by Bai Yi.

Therefore, although Bai Yi's reading is not as enjoyable as the novel, it is not that he cannot understand anything. Those mathematical languages ​​​​that demonstrate the principle of gas-guided and recoil-type automatics are the second most, and the ones that attract Bai Yi's attention the most are half of them.

Demonstration of the principle of free bolt automatic.

Qin Xiaowei's method is actually very simple, which is to divide the bolt machine into two parts: the machine head and the fuselage. The two parts are organically integrated with the firing pin. The upper part of the machine head is made of an inclined L-shaped wedge iron, which is connected with the recoil spring above.

When the bullet is fired, the powerful impact of the gunpowder pushes the nose of the machine backward, together with the fuselage behind it. At this time, the backward movement speed of the nose and the fuselage is 1:5. Therefore, when the roller moves backward and forward,

During the movement, the rear seat stroke of the body is 5 times that of the nose.

Since the machine body recoils quickly, the machine head is released from the buckle. When the recoil stroke of the machine head is slightly greater than 2mm, the roller completely leaves the locking groove of the barrel sleeve. After that, under the action of the aftereffect period pressure,

The entire gun is recoiled together, only the nose and machine

There is a relative displacement of about 7.5 mm between the bodies. During the recoil process, the body overturns the hammer and compresses the recoil spring. At the same time, the cartridge case hits the ejection arm and is thrown out from the right side of the gun. When the rear end of the body

When hitting the buffer, the bolt recoil stops.

Then, under the combined action of the buffer spring and the recoil spring, the bolt retracts, and the machine head takes out a round from the magazine and pushes the bullet into the chamber. The extractor hook snaps into the bottom groove of the bullet, and the machine head stops retracting.

.And the machine body continues to move forward, closing the 6mm gap between the machine head and the machine body.

Under the action of the locking wedge, the roller is squeezed into the locking groove of the barrel sleeve again. At this time, the machine head buckle engages with the convex shoulder on the machine head, and the gun is ready to fire again.

Due to the unique stable characteristics of the ball locking mechanism, coupled with the recoil release of the bolt itself, and the layer-by-layer offset of the recoil spring, the combined force of the three controls the recoil of Qin Xiaowei's general-purpose machine gun within a very reasonable range

, coupled with the moderate power of the 7.62mm bullet, the accuracy of the entire gun is extremely excellent!
Chapter completed!