Mr. Zhao Manhong is a soldier. is a soldier, and what he likes is a responsible man. Some men, don't look at him tall and big, but when things happen, people like to shrink back, and it's best that others can't see him, so they won't catch him out to take on this matter. Such a man, Old Man Zhao looks down on. Men, if they don't have some shoulders, are they still called men?

Therefore, one of Mr. Zhao's favorite poems is written like this: The life and death of the country have been realized, and it is not avoided because of misfortune and fortune.

When you encounter difficulties, don't think about what the consequences are for yourself, the man who can stand up to the critical moment is a real man in the eyes of Old Man Zhao.

Fortunately, most of our troops are such real men. Even if because in the long road of development, there will be people who have taken advantage of loopholes to drill into this iron army for one reason or another, driven by the general environment, it is impossible to hide that this iron army still maintains combat effectiveness. And such a true man's spirit is also what Mr. Zhao Manhong, who is one of them, has always been proud of.

Now, in front of the old man, there is a man who dares to take responsibility. And this man is not currently part of the army. On this young face, what Old Man Zhao saw was bravery, wisdom, and a sense of mission. No matter what the reason for this kid to stand up is for him, just because he can stand up and ask himself questions at this time, Old Man Zhao thinks that he has not seen the wrong person before.

As a good teacher with a sense of responsibility who had already valued Liu Yihao before and wanted to be a disciple in his pocket, of course Old Man Zhao would not let go of such an opportunity to educate at this time. So after Liu Yihao gave the number, the old man followed Liu Yihao's words.

"Good. You can figure out that the total power of your bunch of control components is only 400W. So what is the concept of 400W? Old Man Zhao asked everyone.

Of course, the old man's original intention at this time was not to get everyone's answer. It's just a habit of his lectures. When Mr. Zhao used to write articles, he liked to use self-questioning and self-answering. So at this time, he is still asking himself questions.

After asking that question, Mr. Zhao just stopped for a while, and then replied to himself: "The power of the electric sheet metal pan we usually cook at home is generally about 700W. So if there is 700W, you can cook a pot of sheet metal. So does having 400W now mean that you can at least half-cook a pot of sheet metal? ”

Shen Yiyi heard this, and subconsciously shook his head. This action of hers was seen by Old Man Zhao. The old man grasped this action very shrewdly and said to Shen Yiyi, "That's right. Shen Yiyi has already seen it. Although we have a total power of 400W, this 400W is significantly different from the 700W of the rice cooker. Because this 400W is not all used for heating. The 700W of the electric pan is all used for heating. That's the big difference. ”

Mr. Zhao's derivation process gave great inspiration to those top students of Tsinghua University. At this time, they have also learned to use Old Man Zhao's perspective to think along that path.

The meaning of Old Man Zhao's words was very clear. As the electronic control module used in this machine gun modification project, the main function is to perform calculation and control. This purpose is significantly different from the rice cooker used to heat rice. In this case, the electrical components used earlier are completely different. In other words, because the main function of the electronic control module is not to convert electricity into heat, the 400W is not all converted into heat energy. In this case, the actual amount of heat generated is definitely much less than that figure.

Electrical engineers generally don't like the thermal effects of electric current. Because ideally, the energy of the current should be completely converted into the function that needs to be realized. This will be the most efficient. If possible, manufacturers of computers don't like having to have a fan on their back in the back of their case. And those smartphone manufacturers in later generations may rarely like their users to be forced to leave the game temporarily by hot mobile phones when they are playing games. That's right, the heat of appliances has always been a rather annoying side effect for electrical engineers.

Of course, there are times when the thermal effect of electric current is useful. For example, under the abnormal weather that swept the land of China in later generations, a large amount of ice froze in the China Southern Power Grid, causing a wide range of power grid short-circuit tripping. The solution to this special climate is to use the thermal effect of the current to increase the transmission current to achieve the effect of heating and melting ice on the line.

Any physical phenomenon has both positive and negative effects. All human beings can do is to pursue advantages and avoid disadvantages, and make rational use of such phenomena.

The efficiency of general circuits, or electrical appliances, is roughly between 75% and 90%. This means that about 20% of the electricity is wasted. A significant part of the 20% of the wasted electricity is also lost due to the thermal effect of the electric current. Therefore, Mr. Zhao Manhong roughly converted 400W into 20% as the heat that may be generated by the electronic control module added to the machine gun: "We estimate it, according to our understanding, the heat generated by the electronic control module may be about 80W at most." Do you know what 80W is? The power of the TV that everyone usually watches at home is greater than this number. Have you ever seen a TV hot enough to bake eggs? ”

Old man Zhao Manhong tried his best to use simple metaphors, trying to let these students understand what they wanted to express. During this period of communication, he learned that everyone is engaged in electronic learning and research. So, of course, I am not very familiar with the knowledge content that will be taught in the mechanical department. At this time, the education for everyone is not a physics teaching, but a form of popular science lectures. Therefore, although Mr. Zhao's expression is not very accurate, it also achieves the meaning of what he wants to express for students who have not systematically studied mechanics.

"Maybe everyone still has no idea how much heat this 80W is. In this way, I will probably say that this 80W is just the heat that heats up less than 20 grams of water by 1 degree. Do you know how much 20 grams of water is? In fact, it doesn't matter if we don't know, that is, as long as we have a water pipe poured against the barrel of the gun, we don't have to think about any problems such as forced heat dissipation. In the end, Mr. Zhao gave his own conclusion by giving a lecture to middle school students.

But Old Man Zhao's analogy made Shen Yiyi have new questions. After she heard Old Man Zhao's statement about the water pipe, she couldn't help but ask Old Man Zhao Manhong worriedly: "Old Zhao, do you mean that we still have to consider water cooling of the barrel?" But we don't have any pipes on the outside of the barrel of our guns? So are we going to redesign the barrel again? It's a time-consuming and laborious task, and it's quite difficult. ”

After Old Man Zhao Manhong heard Shen Yiyi's words, a wry smile appeared on his face. He knew that he was not suitable for popular science in front of everyone. Look at it, I tried my best and talked so much, but Shen Yiyi, a little girl, was discounted when she heard it in her ears. She couldn't even understand the parable.

So Old Man Zhao said to Shen Yiyi angrily: "I just said so much, do you only remember one of them?" As I said a long time ago, our machine guns were designed with a lot of consideration for heat dissipation. Especially since the machine gun is fired continuously, the continuity of heat dissipation of the machine gun has been carefully considered at the beginning. If you think about it now, with the heat taken away by 20 grams of water, the space left by our machine gun designers is not enough to accommodate it? ”

As soon as Old Man Zhao said this, whether it was Shen Yiyi, Liu Yihao, and of course, other young people who participated in this project, they breathed a sigh of relief at this moment. They are all studying science and engineering, although Shen Yiyi said that when he was planning this project, he did beat everyone's interest a little, and also made everyone feel a little disappointed that the project was going to fail, but they also believed that if this problem did exist, they could not ignore it. Because the most important thing for those who study engineering is to seek truth from facts, and not to pretend to be wrong.

If Old Man Zhao hadn't explained his reasoning clearly before, and finally persuaded these students, they would still not be willing to accept Old Man Zhao's request to relax their minds. Only after Old Man Zhao has laid out all his truths on the table like this, will these people be truly convinced, so as to let go of the heart that has been hanging in the air since the moment Shen Yiyi expressed his doubts.

A relaxed smile appeared on everyone's faces. Because if, as Mr. Zhao said, if the test is successful at that time, the current machine gun and the separated electronic control components will be directly integrated, and there is no need to consider any additional heat dissipation redesign, which means that the success of the test is the success of the subject. Such an equipment that everyone has spent a lot of effort and is also of epoch-making significance will officially enter the field of vision of military leaders. Being able to get the attention of the leaders means that this weapon will soon enter the sequence of PLA equipment. It's an honor for everyone. What college student who has not yet graduated can get such an opportunity before graduation to design a weapon that has never been seen before for our people's army?

Those boys were secretly excited about such an honor that they might never have imagined. If it weren't for the scruples that if she was too happy now, would it make Shen Yiyi mistakenly think that everyone had the intention of laughing at her for being a little worried before, and everyone would have behaved a little happier in the future.

If Shen Yiyi could experience the depression that these boys wanted to cheer but couldn't, she would definitely smile and say to everyone that such worries were completely unnecessary. She has never been a girl who is cautious and petty in big things. She thinks she's a big girl. This big does not refer to what part of the body is big, but it means that she Shen Yiyi is a girl with a big heart.

It's a pity that Shen Yiyi didn't have any thoughts about the expressions of his classmates at this moment, so he missed such a great opportunity to flaunt his mind to everyone.

At this moment, Shen Yiyi's heart is actually the same as his other classmates. She was also glad that the project was finally not overworked by a small negligence of her own. Being able to discover the omissions in their research before those students is, of course, as Zhao Manhong said, a magical thing in itself, and it is worthy of praise. But Shen Yiyi himself has never regarded himself as just a little girl under the age of twenty. In her heart, she still sees herself as a female engineer with more than ten years of work experience. So for her own mistakes, she definitely didn't treat her mistakes as leniently as Old Man Zhao requested.

So during this period of time, as long as he thought of this matter, Shen Yiyi would inevitably blame himself. According to Shen Yiyi's temper, such self-blame, if she didn't really solve the day when the basket she poked was really resolved, she would not forgive herself.

And now, Old Man Zhao told Shen Yiyi with his own analysis that it doesn't matter, that problem can't cause any big waves. This kind of news, the real most comforting thing is the heart of Shen Yiyi, the initiator.

The problem of heat dissipation, which has been lying on the subject of the project and in Shen Yiyi's heart, has finally been solved. Or it's not called a solution, but it's not a problem. The big stone in Shen Yiyi's heart could finally be moved. At this moment, Shen Yiyi can finally enjoy the joy of completing the key nodes of the project before like his friends who are in the same project like himself, and at the same time, he can finally have high expectations for the upcoming target test like everyone else.

Yes. In the past two days, as long as they have passed the target shooting test, the first-generation combat robot, which had opened some small brains at that time, but at the same time has revolutionary significance for our army's equipment, will officially enter our army's arsenal. And this will certainly change the defense situation of our country.

Shen Yiyi was convinced of this. (To be continued.) )