Coquettish Rebirth

"For a fan, it is actually two things with a propeller. Although it looks similar in appearance, it is actually different. Like a propeller for a helicopter, its main cross-sectional structure is the same as the wing of an airplane. , that is, the one on the upper side is relatively round, and the one on the lower side is relatively flat. In this way, the air flow velocity on the upper and lower surfaces is different. According to Bernoulli's law, the pressure is lower when the flow velocity is fast, and the pressure is high when the flow velocity is slow. Because it protrudes, the air is compressed, the flow speed is fast, and the flow speed below is slow, so a force of support from bottom to top is generated, that is, lift. If you put this propeller on the nose of the aircraft, you can pull it The plane is running forward, and the shape of the propeller of the plane is also to increase the pulling force as much as possible, not to increase the wind as much as possible. However, most electric fans do not have that kind of wing surface structure. The sheet or plastic sheet is made into a bird-wing-shaped structure in order to squeeze the gas flow. Therefore, the function of the electric fan is to squeeze more gas out, not to generate tension or force, otherwise the household Turn on the electric fan for a while, why don't the fan run away by itself..." Old Man Liang said with a smile.

When Jia Hongjian heard this, he froze for a moment, huh?So did you find the wrong person?If that's the case, isn't he completely wrong to find old man Liang?Because the cross-sections and shapes are different, the fan is not their specialty at all!Because even if someone is an expert in the field of marine engineering, the propeller of this ship is supposed to have more power, not just to consume energy to drain water, isn't it?

Here, Jia Hongjian was taken aback, and then he heard the old man say with a smile, "However, although this fan is not my specialty, there are not many deviations in the principle, so it should be no problem to ask for help." Yes, for According to old man Liang, isn't it easy to design a silent fan?When he was studying the boat oars.That is to consider both power and resistance, as well as placing the propeller at the back of the submarine, resulting in different speeds of water entering the propeller, resulting in different pulling forces on the blades that enter the water at different speeds at the same time. It is necessary to consider the cavitation caused by too fast speed, and even at the same time, whether the silence and wake will make it easy to be hit by torpedoes, etc., and finally there are even corrosion protection issues in seawater, etc.

So for the old man, when studying a fan, don't consider the cross-sectional shape.When you don't need to consider the above series of questions, it's really simple!Although the various parameters and experience in the past may not be used anymore, although they used to study how to fully improve the propeller force efficiency, rather than how to increase the "displacement", but to some extent , as long as the previous design direction is completely reversed.It has done everything that could not be done before. Isn't this just reducing the force and increasing the "displacement"?At most, it is enough to modify the shape slightly according to individual situations!

"Really? Oh, thank you so much, Grandpa Liang... How about this, I will contact your office later, and I will entrust your office and get a contract. Do you like it? It means that we entrust your 712 office to help In terms of research and price...can you help me estimate?" Jia Hongjian immediately hit the snake with the stick. [

"Ah? Contract..." The old man was stunned for a moment. He really didn't expect Jia Hongjian to sign a contract!He had already received the director's request.I came here to chat with this young man, the director didn't say anything else, he just told him to be more polite to this young man, saying that he had a better background, and the other old men didn't know anything.So when Jia Hongjian talked about the contract, how could he not be stunned?After all, he originally thought that this matter was just a simple "chat", and at most it was just helping the leader's related households to do private work!This private work, of course, is to help out after work.There is no need to charge any money-at most it is a cost of production.Please have a meal or something.Who would have thought that such a matter of helping with private work would eventually reach the point where a contract needs to be signed.Signing the contract must mean giving money, right?If you want to give money, is this still private goods?

"That's right, the contract. I can't let you and the office help with this matter, right? So let's sign a contract and we will give some money. You can also generate income for the office, sir, and you can improve your life a little bit. How wonderful." Jia Hongjian said with a smile, as if it should be taken for granted.

The scene at this time is simply to reverse the scene 2 minutes ago!At that time, Jia Hongjian was surprised and the old man laughed, but now the old man was surprised and Jia Hongjian laughed.

After being stunned for a moment, the old man Liang also understood that Jia Hongjian's side was obviously not for private work, but for serious money projects! "This... this... I guess... I can't say that well, it depends on the opinions of the inside." Old man Liang suddenly realized that he stopped talking and quickly changed his words!Yes, he suddenly realized that he can't come up with a price for this kind of thing!Later, he asked for a price, but Jia Hongjian insisted on asking the price. What if the firm wanted to ask for a higher price?Then if you can't get it later, it's all his fault?

Seeing that the old man didn't get on, Jia Hongjian had no expression on his face, and was a little disappointed in his heart.He didn't think about how to frame the old man because he was not a man on both sides. In fact, he just wanted to set the scene and try to find out a price, so that he could bargain for the price of 712's income in the future?But it's okay if you can't. Next, under the leadership of the old man, Jia Hongjian returned to No. 712, and then entered the director's office.

An hour later, Jia Hongjian walked out with a stack of contracts.The matter is settled, and this is the contract in hand!Wait, didn't you say that the country has banned the military from doing business since 98?yes!The army is not allowed to do business, but the research institute is not the army!There are military representatives in this research institute, but researchers and the like are not necessarily soldiers!Generally speaking, the research institute is affiliated to different industrial departments of the country, and it is two systems with the army-the army also needs to use military funds to purchase the products of the research institute!Moreover, this research institute not only has military research products, but also civilian equipment that earns extra money. For example, the 712 Institute, in addition to various submarine and ship power supply equipment, actually researches and manufactures diesel generators. , industrial electric drives, and even the all-electric integrated platform for civilian ships... So, by the way, research a fan, it couldn't be simpler!

And for such a project, the price is also very gratifying.Unlike all-electric transmission projects that can easily reach tens of millions, this kind of small fan research, the 712 very conscientious ones don’t need money!In the end, it was Jia Hongjian who took the initiative to give someone 10 yuan, and he also said that half of the 10 yuan was used for material expenses, and the other half was simply used to improve the lives of relevant researchers. .To put it bluntly, in fact, he was doing Ye Jing's father and Jia Hongjian face, otherwise he would not hesitate to accept such a small order!

That's right, if this matter is placed on Huaxia Hi-Tech, it is equivalent to someone approaching Ni Guangnan through Jia Hongjian's relationship and asking Ni Guangnan to help study the telephone extension structure of a small business or something.Will the old man accept this kind of thing?It's easy to understand why Ye Jing's father would face this matter, but why did he say it was Jia Hongjian's face?Well, I'll have to go back an hour to find out——

At that time, Jia Hongjian had just entered the director's office, but when the director heard that Jia Hongjian was coming, he came up to shake hands with Jia Hongjian with great interest, as if he had seen a giant panda become a spirit!This really confused Jia Hongjian, he couldn't understand it at all!Mr. Liang, who was accompanying him at the time, couldn't understand it either, and then he heard Director Fan say, "Comrade Xiao Jia, I have heard about the fact that you were called out for criticism and investigation by the central government! Although this matter is a bit out of bounds, I personally appreciate what you have done! For the country and the nation, yes, yes! Lao Liang, do you know? A person from the south called Chuanglu Group is not based on Did you buy the Varyag from Ukraine for commercial reasons? In fact, the Chuanglu Group is an empty shell, and the money used to buy the aircraft carrier was provided by Comrade Xiao Jia! Our country can have an aircraft carrier, so we would rather spend tens of millions of dollars in foreign exchange. As a result, the national heart has stepped on the red line, and the higher-ups had to report criticism, and then checked him once, and finally found nothing unusual..."

Whoa!When Lao Liang heard this, he immediately turned his head and gave Jia Hongjian the most noble and approving eyes!It's like looking at the battle heroes on the front line!Lao Liang had heard about a company in the south saying they wanted to buy an aircraft carrier, but he never thought that there would be such twists and turns!After all, he usually followed the confidentiality rules for such things, and didn't ask what he shouldn't ask, and didn't know what he shouldn't know!So I never knew there were so many legendary stories in it!

Because of this, when Jia Hongjian proposed to study fans, Director Fan immediately agreed with his chest, and of course he said that he would not pay a penny!But people don't want a penny, Jia Hongjian can't be stingy and don't give a penny!So he directly offered a price of 10! (To be continued. If you like this work, you are welcome to come to (qn) to vote, monthly pass, your support is my biggest motivation. Mobile phone users please go to mqn to read.)