Chapter 966 Extreme Weight Loss (Two First Chapters)
This idea is a very counterintuitive idea in this era. In Professor Liu's opinion, it is well known that the bounce when shooting a gun is random and has no rules.
Gao Zhendong laughed: "In fact, as long as the design is properly, the bounce of the machine gun can be controlled mainly in a certain direction. You should notice that there are two ways to tripods of heavy machine guns. One is to face the front and the other is to face the back. The tripods with the two feet facing the back can offset each other left and right to a certain extent, inhibiting the bounce of the gun from left to right, and focusing the movement mainly in the vertical direction."
Professor Liu drew a few times on the notebook: "Well, your idea makes sense, but the gun frame made in this way really guarantees accuracy? Judging from the indicators you proposed at the meeting, this gun is already top-heavy and jumps very hard."
Whether it is the PK/PKM of the Russians or our 12.7 heavy machine, the gun body is heavier than the gun frame. You can tell at first that this thing must be jumping seriously, because the center of the jump is on the gun body, and the heavy gun body is easy to jump with the light gun frame.
Gao Zhendong said: "Is the jumping very powerful? Let's throw it aside first. Let's continue to talk about this gun frame. On this gun frame, we cancel all unnecessary parts and rely solely on the elastic deformation of the gun frame to offset the back seat of the gun body applied to the gun frame."
The recoil is not only on the gun frame, but part of it is on the gun body, so Gao Zhendong only discusses the part on the gun frame.
As a senior light weapons expert, Professor Liu quickly understood Gao Zhendong's words and even found faults.
"Then what do you mean is three bare rods? You don't even need the buffer spring?" In terms of big steps, you have to be Professor Gao.
The tripods of general heavy machine guns have cushioning springs to cushion recoil and reduce bounce.
Gao Zhendong focused on it: "Yes! The role of the buffer spring is actually replaced by the elastic deformation of this gun frame. To a certain extent, this gun frame needs to be bounced, just don't jump."
In fact, the most core part of the elastic gun frame is to use this "elastic deformation" and "firing timing" to achieve the same effect of the original rigid gun frame making a miracle, or the light gun frame + buffer spring.
Our lightest heavy machine gun stand is extremely simple, and it has even reached the point where it looks unsolid.
In fact, that thing is very solid, but the structure is more counterintuitive.
"Hiss~~~~~~ Can you withstand the back seat like this? It would be better if you lie down. If you lie a little higher, it would be easier to turn over." Looking at Gao Zhendong drawing three bare poles on the picture, Professor Liu took a breath. This thing is light, but it doesn't look strong.
"We should pay attention to one thing. The main task of this machine gun is to lay it flat and hit the ground. Raise it high and hit the sky is not its essential work. If it is that way, either pile some sandbags to assist, or the soldiers are tighter, or put on the vehicle platform, which does not affect its anti-fire function." Gao Zhendong said with a smile.
Hey, I forgot about this. This thing was originally used in the main situation of using it, and the method of shooting was not the main consideration of it. Moreover, the methods mentioned by General Manager Gao just now can indeed have corresponding effects.
"Well, you're right," Professor Liu patted his head, he was still too deeply influenced by tradition: "But is this thing strong enough?"
Gao Zhendong smiled without saying a word, and also drew the section of the tripod on the picture: "What do you think of this structure? Are you strong enough?
"But it's still a little weak." Professor Liu roughly estimated in his head that this section can indeed increase the intensity, but it's still almost interesting.
"What if you use this kind of plate?" Gao Zhendong wrote down a string of mechanical performance data of rolled thin steel plates on paper.
Well, I forgot about this. Professor Gao, his major is actually made of materials. You are amazing. You are noble and you can have any materials you want.
Professor Liu quickly estimated in his heart: "Well, this seems to be similar, but this still cannot solve the impact of bounce on gun bullets. I always feel that the idea you said just now is a bit too advanced." Professor Liu was not very good at saying directly that it was "You are talking nonsense", and Gao Zhendong never aimlessly, so he spoke more tactfully.
Gao Zhendong laughed: "Don't go ahead or go ahead. In fact, this elastic gun frame combines the firing timing of the weapon with the movement of the gun, and makes the shooting accuracy reach the desired level. It is not my first idea."
What? There are other experts?
"Who is it?"
"Old Russians, this time we are planning to imitate the improved PK machine gun of the old Russian. Its tripod is this kind of gun frame. The gun body is much heavier than the gun frame, which is to use this idea to solve the problem. When we are working, we can go to the Defense Work Committee to ask for some PK sample gun, which is also conducive to our 12.7 design work."
Professor Liu is not responsible for imitating PK machine guns, but this matter does not need to be kept secret from him. PK's tripod is not as extreme as PKM, but the clues of elastic gun mounts have been seen for the first time.
Gao Zhendong did not take the honor of proposing the elastic gun frame on himself, and forcibly "heroes have similar views." This thing was indeed the Russians first.
"Ah? It seems that there is a real way." Professor Liu did not blindly believe in the Russians, but both Russians and Professor Gao felt that this method could solve the problem, and it seemed that it could really play a certain role. Then he discovered a big problem: "But it is difficult for us to calculate the law of elastic deformation."
If you don’t master the deformation rules, you cannot adjust the weapon’s fire rate in a targeted manner. In theory, you can try it little by little, but the result is not easy to grasp.
Gao Zhendong pointed to the computer: "You can consider using the finite element method and adding a computer to simulate and analyze it."
"Finite Element Method? What is this method?" Professor Liu didn't understand much about mathematics. This emerging mathematical tool, which was born in 1943 and truly developed in the late 1950s, was not within his understanding.
Gao Zhendong was stunned for a moment. He forgot that this was not decades later. Now, let alone mastering it, there are not even many people who know this. Even he studied it in depth through a specially drawn elastic gun rack design paper.
"It is to split an object into small pieces for mathematical and physical analysis, and also take into account the relationship and influence between these small pieces." This matter cannot be discussed for the time being, so Gao Zhendong gave an example.
Professor Liu was shocked: "In this way, the calculation volume is amazing." He is also a professor, and when he heard "considering each other's relationships and influence", he knew that the calculation volume of this thing was very small.
Gao Zhendong smiled and said, "Don't worry about this. I have estimated that the latest computer is not very fast, but it is definitely not slow. Moreover, the partitioning particle size of the elastic gun frame does not need to be very fine, and it is generally acceptable."
Oh, yes, yes, this is still a top computer and software expert... Professor Liu is a little numb.
Then he became happy again. This is our leader, and that's all right.
"Okay, okay, Professor Gao is easy to deal with with with confidence. If the gun frame takes this path, how do you think about the gun body?"
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Weight loss is not just a gun reduction frame. Although the gun frame is the main way to reduce weight, the gun body is also very important. Professor Liu saw that the indicator Gao Zhendong had not been simple, and he also needs to study it carefully in this regard.
"There are too many details on the gun body, and it is not clear at this stage, but there are some that we can determine first."
"Okay, you say, I'll remember, put it into the overall plan for the project application and start this matter first." Professor Liu happily spread out his notebook.
"The universal ball head is used on the gun frame instead of the high and low machine and direction machine. The overall configuration is a hollow shoulder stock, a small pistol grip trigger, an aluminum alloy receiver, and a short rear seat of the barrel and an air-guided hybrid automatic principle."
Gao Zhendong began to copy hard.
"Well, it's easy to understand that the universal ball head replaces the high and low machine direction machine. It's about reducing weight and reducing complexity. It's easy to say that the stock and the small grip of the pistol are used to further offset the back seat, but what's wrong with the short rear seat and the air guide?"
The short barrel rear seat and the air conductor are two different automatic principles, with completely different structures, so it is not an ordinary trouble to combine them together.
Gao Zhendong patted his head: "I forgot to say that the short rear seat of the barrel here is actually the main purpose of using the rear seat of the barrel to relieve the overall recoil. It has nothing to do with automatic. The real automatic method is actually the air-guiding type."
Our heavy machine gun can make the gun body not heavier than the S2 light machine gun. Our country's scientific researchers have really spent a lot of effort and have worked hard to do it. They have all the means to lower the rear seat without reducing the power, so that the light elastic gun frame can be truly used.
Russian: Actually, it doesn’t have to be that light~~~~~~
"Ah, I understand. The barrel of the gun is short and the rear seat is just to reduce the weight of the rear seat. But the aluminum alloy receiver is equipped with a locking mechanism, which can withstand the impact of the 12.7mm bullet?"
"No, let's do a work, put the locking joint on the barrel, and make the tail of the barrel thicker and stronger, and you can withstand it. The receiver itself does not need to be so strong, and it can save a lot of weight."
Gao Zhendong drew a few strokes on the notebook, and Professor Liu's eyes gradually became clear from confusion.
"Wonderful! Wonderful! This method is amazing!" This method is not suitable for small and medium-sized calibers like 7.62, and it will greatly increase the size of the gun body, but it is suitable for 12.7, which has a much larger size margin.
To be honest, if he lets him do it himself, he would never have thought of such an exquisite solution to Professor Gao.
In order to lose weight, Professor Gao really thought of all the ways he could think of.
(This chapter ends)