Yang Limin's words were like a basin of cold water pouring on everyone's heads. He was right. Although it was just a matter of recoil, it involved almost all the components inside the gun. It seemed to be just a small change, but it was no different from the development of a new gun. The people present only improved it based on the 56-storage sentence. They thought that there was no difficulty in developing a new gun. Unexpectedly, Yang Limin's words brought everyone from their excited fantasy back to reality.

Lu Jiadong did not seem too optimistic like others because he knew that all aspects of developing a qualified gun were considered, and the process was even more difficult. Because of this, when Yang Limin raised this question, Lu Jiadong looked at him with admiration. This old man who didn't talk much and was often forgotten in the corner always had a clear mind, which made Lu Jiadong feel that Yang Limin was very unusual:

"There are many solutions!" Lu Jiadong smiled at Yang Limin: "We can work hard on the structure of the bolt, the proportion of the receiver and the air conduction method!"

"Although these three methods you mentioned can be solved, no matter which solution, it requires thousands of calculations and experiments, and the workload..."

Yang Limin did not finish his words. Even so, it made the people present take a breath. These people can be called old military industry and know that the calculation and testing of military product development are massive work. Therefore, Yang Limin's words are not alarmist. Because of this, the factory director Zheng Yongbo said with concern:

"Old Yang makes sense. Not to mention the calculation time, the cost of material testing is an astonishing number. Our factory can't afford such a huge cost. Xiao Lu, do you see if there is any other way!"

When Zheng Yongbo finished speaking, Lu Jiadong couldn't help but frown. He actively advocated the development of new guns, but did not fully consider some aspects, such as the test and cost issues mentioned by Yang Limin and Zheng Yongbo. He didn't even think about it before. Now the two raised this question, and Lu Jiadong didn't know how to answer it for a while.

Seeing that Lu Jiadong didn't say anything, Chen Zihao was a little anxious. He was the youngest person in the development team except Lu Jiadong. Because of this, he had long been ready to achieve something. Now, due to the experiment and cost issues, the development of a new gun may have to be stranded. How could he not be anxious? So he quickly stepped forward and photographed Lu Jiadong:

"Jiadong, the factory manager asked you something. You said something!"

"You can use finite element!"

Lu Jiadong's inadvertent words made Yang Limin's eyes suddenly lit up, but Chen Zihao, who was standing next to him, didn't understand and muttered without a good voice:

"What's the stuffing but not the stuffing? This is not a dumpling, Jiadong, you...ah! Uncle Yang, why are you pushing me...ah..." Chen Zihao was talking, and Yang Limin on the other side suddenly took a step forward, pushed him aside, and pushed Chen Zihao aside, almost falling down.

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

"I said we can use finite element analysis to solve it!"

"Finite element! Do you actually know about finite element?" Yang Limin seemed very excited.

"I came into contact with the expert aid team in B countries a few years ago..." Seeing Yang Limin ask, Lu Jiadong brought up the matter of assisting the expert aid team in B countries. This statement has been recognized by most people in Wanshan Factory. Therefore, when someone questioned his technical source, Lu Jiadong told the story of self-taught abroad again.

"So that's the case, no wonder you know so much..."

"What? Old Yang, do you know too?" Chen Zhen asked with a smile when he heard Yang Limin's feelings. Unexpectedly, Yang Limin jumped up as if he was shocked by an electric shock when he heard Chen Zhen's question, and hurriedly shook his hand and said, "No, absolutely not, how could I know! I just saw an introduction to finite element analysis in the foreign-related information of the Technical Department!"

"I remembered it too, that's the case!" Qiao Junfeng also stood up and added: "It's just that the information is too simple. Xiao Lu, do you know this?"

As an expert in the military industry, Lu Jiadong knew of this mechanical calculation method that was widely used in the military production field. So as soon as Qiao Junfeng finished speaking, he took chalk and brushed dots on the blackboard to draw several geometric figures and mathematical models:

"Just set a few values ​​and bring them to this matrix, you can calculate a different value, and then use this mathematical model to see if the set value is reasonable. With this method, you can greatly reduce the amount of physical experiments and minimize the cost and risks!"

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

But in Lu Jiadong's eyes, the gray-haired old man seemed to be deliberately hiding something. This can be seen from the reflection after hearing the finite element analysis just now. Even though Lu Jiadong had questions in his mind, he did not ask Yang Limin in front of so many people. He just felt that the old man should not be simple, and he did not think much about the others and continued:

"It's just that the calculation volume of this model is quite large, but unfortunately we don't have a computer, otherwise..."

"There is no need for a computer!" Before Lu Jiadong finished speaking, Yang Limin combined the recorded notebook: "The 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 perform calculations!"

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

Yang Limin nodded: "Your method is very unique. I have never seen it before. I just took advantage of this calculation to study hard!"

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

"Okay, thank you Master Yang. When the new gun is successfully developed, Master Yang will be a great hero!"

"You are the hero. Without Xiao Lu, you, we don't know how many detours we have to take. I don't know the calculation method elsewhere. It is definitely the leader in our Guixi Province. It is simply a multiplier for the development of a new gun!" Yang Limin admired Lu Jiadong from the bottom of his heart, so he praised Lu Jiadong so much, so he was so proud of his words.

As Yang Limin led, others also gave Lu Jiadong a thumbs up, which made Lu Jiadong very flattered. In his opinion, both gun theory and finite element analysis are very familiar things, 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 no big deal, it's just a few outdated theoretical and applied mathematics problems..."

But before Lu Jiadong finished speaking, the few people present felt like they were about to faint. Lu Jiadong felt nothing, but the others thought that this was all treasures, so several people surrounded Lu Jiadong and strongly asked him to change his bad habit of being too humble.

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

Yang Limin took the sketch to calculate, and Lu Jiadong was not idle either. The 56 rush was shocked, the recoil was amazing, and the muzzle jumped violently when firing. It was not easy to solve these shortcomings on the new gun. Fortunately, Lu Jiadong was a military expert who traveled through time in later generations, and had the advantage of foresight that people at this time were incomparable.

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. The method used by this gun to solve the three major problems of 56 rush was brought over by Lu Jiadong without hesitation. For example, in order to solve the problem of muzzle jumping during firing, Lu Jiadong shortened the distance between the air conduit pipe of the new gun and the barrel.

In order to solve the problems of vibration and recoil, Lu Jiadong abandoned the long-stroke air piston that 56 rushed on the new gun, but used a short-stroke air piston. As for the spring that drives the shooting operation on the rear side of the receiver, it uses the inertia of the air piston to drive it.

In addition, the receiver of the new gun is also longer than the receiver of the 56-rush, mainly to increase the shooting motion distance, offset and release part of the recoil, and at the same time add pads and booster springs inside the stock to further reduce the impact of recoil on the shooter.

Although Lu Jiadong knew the principles and structures, he did not know the specific values ​​and bite ratios of each component. This was mainly because Lu Jiadong's military-industry projects in later generations were either aircraft carriers or anti-ship ballistic missiles. Light weapons such as firearms could not be seen at all. He only occasionally learned about the structure of the firearms through information, but he could not remember the specific values ​​of the components.

Therefore, when Lu Jiadong designed each detail in detail, he would list several sets of similar data according to his memory and then send it to Yang Liming for calculation. In this way, Yang Liming's progress was dragged back by Lu Jiadong, but he had no complaints. After receiving the data, he grabbed the abacus and picked up the draft paper and counted it.

Before he knew it, a month passed. After a series of comprehensive methods, the recoil of the new gun was greatly improved than that of 56. However, before Lu Jiadong was happy for too long, Liu Wei from the military workshop hurried over to find him. Before he could finish his words, Lu Jiadong quickly put down his things on his hands and ran towards the military workshop!
Chapter completed!