Yang Limin is right, the firing situation of high-power ammunition is indeed not the same as ordinary firearms, mainly the charge of ammunition is increased, the caliber is increased, in order to maintain the power but also to ensure a certain muzzle velocity and range, so the overall mechanism can not copy the structural principles of different firearms, otherwise it will be fried, boring, and casualties.

Therefore, when Yang Limin finished speaking, Lu Jiadong couldn't help but nodded: "Lao Yang is right, but we are not without a way, we can start from the air conduction mode, automatic machine operation mode and recoil."

As he spoke, Lu Jiadong introduced the specific technical details involved in the light automatic grenade launcher to Yang Limin and Chen Zhen, and when he talked about the key parts, he dipped his fingers in the cooled tea and drew a few simple graphics on the table, and Chen Zhen, who was sitting opposite, nodded and listened carefully.

And Yang Limin, who was next to him, took out the notebook he carried with him, wrote down the technical details that Lu Jiadong said one by one, and when he didn't understand, he also held a small notebook and pointed to the sentence just recorded with a pen, and only gave up until he understood the problem Lu Jiadong said, which was not at all like an old man over half a hundred years old, but like a primary school student who had just entered school.

However, Yang Limin is not blindly recorded, and sometimes he will talk about his thoughts and opinions, in addition to his own solid technical skills, after the development of Type 78 firearms, especially after presiding over the Type 78 class machine gun, let him pick up all the knowledge he has learned before.

Because of this, Yang Limin put forward very constructive opinions on the mechanics of the launcher, such as the setting of the air guide chamber between the receiver and the bolt, the analysis of the overall force of the grenade launcher, and the optimization of the force of the bolt assembly.

Some even Lu Jiadong, a time-traveler in later generations, felt sorry for himself, which also made Lu Jiadong admire Yang Limin very much, you must know that Lu Jiadong has the aura of a time-traveler, and Yang Limin is a solid real talent.

"We can put the gas conduction condition device here, the height of the handle should not be too high, and the automaton will be optimized" Lu Jiadong took Yang Limin's notebook in his hand, and drew a simple sketch of a light automatic grenade launcher on it with a pen, drawing and explaining at the same time.

Without waiting for Lu Jiadong to finish, Yang Limin, who had already moved the chair to Lu Jiadong's side, also took a pen and circled it and drew a few times:

"Well, also adjust the air guide hole a little smaller, so that the force will not be so large, and enhance the operability."

Yang Limin didn't write twice with the pen, and there was nowhere to put down the paper that was already full of his eyes, so Yang Limin turned a page, and before he could put down the pen, he found that a small notebook had been used up in the unwitting discussion, and at this moment, Chen Zhen handed the freshly poured tea to Lu Jiadong and Yang Limin.

When Lu Jiadong and Yang Limin were discussing, he just listened quietly on the side, some advanced computing and physical knowledge may not be well understood, but he understands things related to production technology, and as an old military industry, he knows very well that in addition to the advanced theoretical basis, a piece of equipment must be combined with supporting production technology to turn the drawings into reality, otherwise everything is in a flash.

The light grenade launcher proposed by Lu Jiadong still adopts the existing mature process of Wanshan Factory in terms of production process and raw materials, except for a few bolt parts may be difficult to process, but it is not unattainable, because of this, Chen Zhen handed the tea to the two of them, and said with a smile:

"After you say this, I think this light automatic grenade launch is indeed feasible! Lao Yang, Xiao Lu, in this way, the two of you go back and make a feasibility report, submit it to the factory party committee, and strive to confirm it at the recent factory meeting!"

As soon as Chen Zhen's voice fell, before Lu Jiadong and Yang Limin could answer, the door in the house was opened with a "creak", Yang Xin took the Chen family brothers and sisters back to the house, and Yang Limin in the house seemed to understand something, and quickly turned his head to look at the clock on the cabinet:

"Oops! It's so late!" As soon as Yang Limin finished speaking, the clockwork on the pendulum clock began to "squeak", followed by "ooh~~ooh~~" and rang 9 times.

The people in the house, whether it was Lu Jiadong or Chen Zhen and Yang Limin, didn't feel that time passed so quickly, and before they knew it, it was 9 o'clock in the evening, in this era when entertainment was not developed, 9 o'clock was already very late, after all, most families had fallen asleep at this time, because of this, Lu Jiadong and Yang Limin hurriedly got up and said goodbye

Yang Limin pushed the bicycle and walked side by side with Lu Jiadong, because the place where the two lived was not far away, so when they came out of Chen Zhen's house, the two walked together, Yang Limin wanted to use a bicycle to take Lu Jiadong for a ride, but Lu Jiadong resolutely disagreed, because Yang Limin was old, and Lu Jiadong really didn't want him to be affected.

And when Yang Limin proposed that Lu Jiadong ride a bicycle, and he sat in the back, Lu Jiadong disagreed even more, as for the reason, it is even simpler, Lu Jiadong does not know how to ride a bicycle at all, when he said this reason, even Yang Limin couldn't believe it, but this is the case.

In later generations, Lu Jiadong could drive a car, a speedboat, and a plane when necessary, but he really never moved this bicycle, let alone riding a bicycle with people. Because of this, Yang Limin could only push the cart and walk with Lu Jiadong.

Along the way, the two of them were chatting all over the world, but as they spoke, Yang Limin's face suddenly became serious: "Xiao Lu, I really want to thank you!"

Listening to Yang Limin's words, Lu Jiadong couldn't help but be stunned: "Old Yang, you are"

"Since you came to our Wanshan factory, I have learned a lot of things!" Before Lu Jiadong finished speaking, Yang Limin preemptively said: "The finite element, the structure of the new gun, and the current light automatic grenade launcher have all taught me a lot of knowledge from it!"

As he spoke, Yang Limin's face was filled with rare warmth and joy, but then he smiled self-deprecatingly: "Maybe you may laugh at me when you hear this, I have to thank you for your recommendation, what are you doing with all this technical knowledge!"

"For our military workers, position and status are just an identity, and knowledge and technology are our core!"

Listening to Lu Jiadong's words, Yang Limin couldn't help but stop, looking at Lu Jiadong, Lu Jiadong's figure was reflected in the pupils behind the black-framed glasses, and unconsciously this figure shook slightly in his eyes a few times, Yang Limin quickly blinked his eyes, then took off his glasses and wiped the tears from the corners of his eyes with his sleeve.

"Old Yang, how are you?"

"It's okay!" After Yang Limin finished wiping, he put on his glasses again: "Just looking at you, I remembered when I was young!"

When Yang Limin said "when he was young", Lu Jiadong's long-term curiosity about Yang Limin was activated, except for Yang Limin in the Wanshan Factory, no one made Lu Jiadong so curious, he is proficient in English, he is very good at mechanics, first-class drawing, solid mathematical skills, just now discussed automatic grenade launchers will always put forward thought-provoking opinions.

And these can't be done by an ordinary draftsman, because of this, when Yang Limin finished saying this, Lu Jiadong could no longer suppress his strong curiosity, and couldn't help asking:

"And what did you do when you were younger?"

"Like you, you're also a tech!" Yang Limin, who had returned to normal, put on his eyes again and replied vaguely.

"Which aspect?" Lu Jiadong did not give up.

"It's very biased, it's very sideways, it's not worth mentioning at all!" Yang Limin's tone of speech seemed very frustrated, Lu Jiadong listened to Yang Limin's words, and knew that he was deliberately concealing it, but he didn't know why, but no matter what, Lu Jiadong knew in his heart that he couldn't ask today no matter what.

Yang Limin didn't give Lu Jiadong a chance to continue to ask questions, but stared at Lu Jiadong and said with feeling: "When I was young, I wanted to use my own hands and skills to make this country strong, so that others would not dare to bully us, but I didn't catch up with the good times."

After so many years, although I know in my heart that we are lagging behind, but I still have certain illusions, since you said finite elements, I have found that our scientific and technological level is not a little bit backward compared with the West, if we do not catch up now, we will inevitably be beaten in the future, and the burden on our shoulders is still very heavy!"

Yang Limin paused as he spoke, and a relieved smile appeared on his face: "Fortunately, there are still young people like Xiao Lu, and you have already embarked on the road of catching up, at least for now, we still have hope!"

"That's right!" Lu Jiadong nodded, with a confident smile on his face: "As the country improves day by day, I believe that we will not be worse than others in the future!"

"I hope so!" Yang Limin's face was not as happy as Lu Jiadong, but very calm, and he couldn't tell whether he was happy or sad, but then Yang Limin's eyes suddenly lit up:

"I almost forgot something!" he said, he took out a few chapters of scratch paper from his pocket and handed them to Lu Jiadong: "Two days ago, I looked at the 40mm grenade we produced, and I felt that the shape of the ammunition was not suitable, so I tried to improve it, this is the drawing, you go back and see if it can be used!"

"Okay, I'll study it carefully!" Lu Jiadong said, and took the draft paper of these chapters, so the two walked for a while, and it didn't take long for them to come to the door of the dormitory, Yang Limin said goodbye to Lu Jiadong, and disappeared into the night on his bicycle.

And Lu Jiadong remembered that Yang Limin had given him a few pieces of scratch paper, so he took them out of his pocket, and then glanced at the light at the door of the dormitory, and Lu Jiadong was surprised!

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