Yang Limin's words are like a basin of cold water poured on everyone's heads, he is right, although it is just a recoil problem, but it involves almost all the parts inside the firearm, it seems to be just a small change, in fact, it is no different from the development of a new gun, the people present are just because of Lu Jiadong's sentence to improve on the basis of 56 punches, thinking that there is not much difficulty in the development of the new gun, did not think about Yang Limin's words, and pulled everyone back to reality from the fantasy of excitement.

Lu Jiadong is not overly optimistic like others, because he knows that the development of a qualified firearm has to consider all aspects, and the process is even more difficult, because of this, when Yang Limin raised this question, Lu Jiadong was even more impressed with him, this old man who usually doesn't talk much and is often forgotten in the corner, but he always has a clear mind, which makes Lu Jiadong feel that this Yang Limin is very unusual:

"There are many solutions!" Lu Jiadong smiled at Yang Limin: "We can work the bolt structure, receiver ratio and gas conduction method!"

"Although the three ways you mentioned can be solved, no matter which solution requires thousands of calculations and experiments, this amount of work"

Yang Limin's words were not finished, even so, it made the people present gasp, these people can be called old military workers, and they know that the calculations and tests in the development of military products are massive work, so Yang Limin's words are not alarmist, because of this, Zheng Yongbo, the director of the factory, said without worry:

"Lao Yang is reasonable, not to mention the calculation of consumption time, that is, the material cost consumption of the physical test is an amazing number, our factory simply can't afford such a huge cost consumption, Xiao Lu, see if there is any other way!"

When Zheng Yongbo finished speaking, Lu Jiadong couldn't help frowning, he actively advocated the development of new guns, but he did not consider it completely in some aspects, such as the test and cost issues that Yang Limin and Zheng Yongbo said, he didn't even think about it before, and now the two of them put this question forward, Lu Jiadong didn't know how to answer for a while.

Seeing that Lu Jiadong didn't speak, Chen Zihao was a little anxious, he was the youngest person in the development team except for Lu Jiadong, because of this, he had already been gearing up to make some achievements, and now because of the test and cost problems, the development of a new gun may have to be put on hold, how could this not make him anxious, so he hurriedly stepped forward and patted Lu Jiadong:

"Jiadong, the factory director asks you. You're going to say something!"

"You can use finite elements!"

Lu Jiadong's unintentional words made Yang Limin's eyes suddenly light up, but Chen Zihao, who was standing next to him, didn't understand, and muttered quietly:

"What has stuffing and no stuffing, this is not making dumplings, Jiadong, you sigh! Uncle Yang, why are you pushing me, alas" Chen Zihao was talking here, and Yang Limin over there suddenly took a step forward, pushed him aside, and pushed Chen Zihao to a stumbling side, almost not falling.

But Yang Limin didn't care about this, but stared at Lu Jiadong with round eyes, and the wrinkles on his pale face trembled: "What did you just say?"

"I said we can solve it with finite element analysis!"

"Finite Element! You actually know Finite Element?" Yang Limin looked very excited.

"I came into contact with it a few years ago when I was in contact with the expert assistance group in country B" Seeing Yang Limin ask, Lu Jiadong moved out the matter of assisting the expert group in country B, which has been recognized by most people in Wanshan Factory, so when someone questioned the source of his technology, Lu Jiadong told the story of self-teaching abroad again.

"I see, no wonder you know so much"

"What? Old Yang, do you know?" Hearing Yang Limin's emotion, Chen Zhen asked with a smile, but he didn't expect Yang Limin to listen to Chen Zhen's question as if he had been shocked, jumped up suddenly, and hurriedly shook his hand and said: "No, absolutely not, how can I know! I have only seen the introduction of finite element analysis in the foreign-related materials of the technical department!"

"I also remembered, there is such a thing!" Qiao Junfeng also stood up and added: "It's just that the information is too simple, Xiao Lu, do you know this aspect?"

As an expert in the field of military industry, Lu Jiadong is of course aware of this kind of mechanical calculation method that is widely used in the field of military production, so when Qiao Junfeng's voice just fell, he took chalk and brushed a little bit on the blackboard, drawing several geometric figures and mathematical models:

"As long as you set a few values and bring them to this matrix, you can calculate a different value, and then use this mathematical model to see whether the set values are reasonable, with this method, you can greatly reduce the amount of physical experiments, and minimize the cost and risk!"

Lu Jiadong said while looking at Yang Limin, he had already held the notebook in his hand, his eyes were staring at the mathematical model on Lu Jiadong's blackboard, and the pen in his hand was flying up and down on the notebook, for fear of remembering a number wrong, although Yang Limin at this time was no different from others.

But in Lu Jiadong's eyes, the gray-haired old man seemed to be deliberately hiding something, which can be seen from his reaction after hearing the finite element analysis just now, even if Lu Jiadong had doubts in his heart, but he didn't ask Yang Limin in front of so many people, he just felt that this old man should not be simple, and the others didn't think much about it, so he continued:

"It's just that this model is computationally intensive, but unfortunately we don't have a computer, otherwise"

"You don't need a computer!" Before Lu Jiadong finished speaking, Yang Limin closed the notebook he had memorized: "This calculation method proposed by Xiao Lu has greatly reduced the amount of calculations and experiments, these things are nothing, I think I should be able to calculate!"

"Do you want to calculate it manually?" Lu Jiadong was a little surprised.

Yang Limin nodded: "This method of yours is very unique, I have never seen it, just take advantage of this calculation to study hard!"

Chen Zhen knew Yang Limin very well and knew that he was determined to do it, so he came out and said to Lu Jiadong: "Xiao Lu, you just follow Lao Yang, what he wants to do, you can't stop it!"

"Okay, it's hard Master Yang, when the new gun is successfully developed, Master Yang, you will be a great hero!"

"You are the hero, without Xiao Lu's method, we don't know how many detours we have to take, I don't know how many detours this calculation method is in other places, it is definitely the leading in our Guixi Province, and it is simply a multiplier for the development of new guns!" Yang Limin admired Lu Jiadong from the bottom of his heart, so he praised Lu Jiadong so much on weekdays.

Driven by Yang Limin, everyone else also extended a thumbs up to Lu Jiadong, which made Lu Jiadong very flattered, in his opinion, whether it is firearms theory or finite element analysis, it is a very familiar thing, and there is no big deal, so in the face of everyone's praise, Lu Jiadong touched his nose and explained with a smile:

"It's not a big deal, it's just a few outdated theoretical and applied math problems"

But before Lu Jiadong finished speaking, several people present felt like they were about to faint, Lu Jiadong felt nothing, but others felt that it was all treasures, so several people surrounded Lu Jiadong and strongly asked him to get rid of his bad habit of being too modest.

After that, Lu Jiadong drew a few sketches of the firearm, and set a few values to Yang Limin, asking him to go back and calculate the running distance of the bolt, the stroke of the gas piston and the size of the receiver combined with the two, Yang Limin asked Lu Jiadong to give him a week, and then hurried home to calculate.

Yang Limin took the sketch to calculate, Lu Jiadong was not idle, the vibration of the 56 punch was large, the recoil was amazing, and the muzzle of the gun jumped violently when firing, it was not easy for these shortcomings to be solved on the new gun, but fortunately, Lu Jiadong was a military expert who came through in later generations, and he had an incomparable prophetic advantage at this time.

Therefore, in the development of the new gun, Lu Jiadong referred to the 81-1, which was widely praised in the army in later generations, and the methods used by this gun to solve the three major problems of 56 punches were moved by Lu Jiadong without any scruples, for example, in order to solve the problem of muzzle jumping when firing, Lu Jiadong shortened the distance between the air duct and the barrel of the new gun.

In order to solve the problem of vibration and recoil, Lu Jiadong abandoned the long-stroke gas piston on the 56-stroke gun and used a short-stroke gas piston instead.

In addition, the receiver of the new gun is also longer than that of the 56-stroke receiver, mainly to increase the distance of the gun's movement, offset and release part of the recoil, and at the same time add padding and booster springs inside the butt to further reduce the impact of recoil on the shooter.

Although Lu Jiadong knows the principle and structure, he does not know the specific values and bite ratios of each component, mainly because the military projects that Lu Jiadong mainly grasped in later generations are either aircraft carriers or anti-ship ballistic missiles, and light weapons such as guns cannot enter his eyes at all.

Therefore, when Lu Jiadong designs each detail, he will list several sets of similar data according to his memory, and then send them to Yang Limin for calculation, so that Yang Limin's progress was delayed by Lu Jiadong, but he did not have any complaints, and after receiving the data, he didn't say a word, grabbed the abacus, and took the draft paper to count.

Unconsciously, a month has passed, after a series of comprehensive methods, the recoil of the new gun has been greatly improved compared with the 56 rush, but before Lu Jiadong was happy for too long, Liu Wei of the military workshop hurriedly ran over to find him, and before he finished speaking, Lu Jiadong quickly put down the things at hand and rushed towards the military workshop!

ps: Thank you again for the reward of Tianhai Xiangyun, thank you for the reward of Qertdd, and thank you for your support and love. In the end, Yuzu still has to ask all brothers and sisters, more collections and recommendations for Yuzu, Yuzu is grateful, thank you brothers and sisters for your support, Yuzu thank you!

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