Start with the aviation industry

Chapter 339 Advanced Wide Chord Fan Blades

To be honest, Lin Feng was really a little nervous.

In everyone's eyes, they walked in anxiously like this. Yang Ling and Zhao Huanzhi were obviously worried and nervous, and they were about to follow in, but they were stopped by the doctor.

"Others wait outside first, just go in one."

"Oh!"

The door of the delivery room was closed, and no one knew what was going on inside. Zhao Huanzhi almost burst into tears, "God bless, please don't let anything happen. I will keep their mother and child safe."

Lin Lan, Lin Qiong, and Lin Chao were all nearby, and Lin Lan comforted, "Auntie, don't worry too much. The hospital has arranged for the best doctor. My sister-in-law will be fine."

After all, he is a college student. At this time, his mind is clear and he has not messed up the slightest sense of propriety.

Lin Qiong has also seen the big world. He manages [-] to [-] employees, and he also comforted, "Yes, there must be nothing wrong. Let's wait patiently."

Being so comforted, Zhao Huanzhi felt better. She wiped her tears with a handkerchief and sat on a chair outside the delivery room to wait.

People like Lin Guobin and Hu Xinmin lowered their heads. After a bit of hardship, they went to the smoking spot outside and smoked silently. It could be seen that the two of them were also nervous, worried that something might happen to Hu Xiaoxiao.

Let's talk about Lin Feng.

After entering the delivery room, seeing Hu Xiaoxiao on the delivery bed, I suddenly felt an inexplicable heartache, gently held her hand, and said softly, "Don't be afraid, my wife, I'm by your side."

The director of the obstetrics department said, "President Lin, the mother has no problems, but she is a little nervous, and her first child was born naturally, so she hasn't given birth yet."

Hearing this, Lin Feng felt relieved.

It's fine if there is no problem, the most fearful thing is that there is something wrong.

"Xiaoxiao, listen to the doctor, husband, I'm by your side, don't be afraid."

Maybe it was because Lin Feng had enough sense of security after being by his side, Hu Xiaoxiao was not so nervous, and followed the doctor's instructions to use force, while Lin Feng wiped her sweat from time to time with a towel, after more than an hour.

Following Hu Xiaoxiao's painful cry, the baby's cries sounded, and the obstetrician was also overjoyed, saying happily, "It's out, it's out!"

"Mr. Lin, congratulations, you are a very healthy son."

Lin Feng glanced at his son, and then said to Hu Xiaoxiao, "My wife, thank you, thank you for giving birth to a fat boy."

Hu Xiaoxiao felt relieved, and felt much more relaxed.

The doctors and nurses were busy, while Lin Feng gently held Hu Xiaoxiao's hand the whole time. He found that his wife's hand was a little cold, and felt distressed for a while. Giving birth to this son seemed to be like walking through the gate of hell. He made up his mind, In the future, I will treat my wife better, cherish her more, and love her more.

outside the plant.

Lin Lan said suddenly, "It seems to have been born. I heard the baby crying just now."

"Really!"

"I don't know if it's a boy or a girl."

When everyone was looking outside the delivery room, after a while, the door of the delivery room opened, a doctor and a nurse came out, and the nurse held a baby in her hands.

The doctor said, "He has been born, 7 catties and 6 taels, a boy, very healthy."

"I'll take a look!"

"so cute!"

Lin Lan, Lin Qiong, etc., including Hu Tingting, went to see the newborn baby immediately, while Zhao Huanzhi asked, "Doctor, how is my daughter?"

The doctor said, "Don't worry, everyone, there is nothing wrong with the pregnant woman, she can come out later."

After briefly talking about the situation and letting everyone take a look at the baby, the nurse took it away and will send it back to the ward later.

About two or three ten minutes later, Hu Xiaoxiao was also pushed out from the delivery room. Zhao Huanzhi was the first to go over and hold Hu Xiaoxiao's hand, "Xiaoxiao, are you okay?"

Hu Xiaoxiao said weakly, "Mom, I'm fine, don't worry."

The group went back to the ward with the doctor and nurse. Not long after, the nurse brought the child over and taught Lin Feng and Hu Xiaoxiao how to breastfeed the child, and explained some parenting knowledge.

After busying, seeing the child lying quietly in Hu Xiaoxiao's arms sucking milk, Lin Feng's eyes softened for a while, and he was extremely happy. I have a son, and I will be a father from today.

He happily took out his mobile phone and sent text messages to everyone to announce the good news. Several senior executives of the company and some of his friends sent text messages one after another.

After a while, Lin Feng's cell phone started ringing non-stop, full of congratulatory calls, one after another without stopping.

Fortunately, this is a VIP ward, which is divided into two rooms, the inside is the ward, and the outside is a small living room with a sofa, TV, etc. Lin Feng's calls will not affect the adults and children inside.

After listening to at least a dozen phone calls, Lin Feng gently opened the door and looked. His mother-in-law was sitting next to the ward, and said softly, "Xiaoxiao and the child are asleep."

Looking at Hu Xiaoxiao on the bed, and then at his own child, Lin Feng nodded lightly, and closed the door gently.

The whole family also revolved around Hu Xiaoxiao and the children, not only invited the most experienced confinement wife, but also boiled chicken soup, the free-range chicken specially raised by Zhao Huanzhi, the soup was golden in color and fragrant.

For three days in a row, Lin Feng basically stayed in the hospital.

People came to visit every day, not only the middle and high-level executives of Leihuo Technology Industrial Group, but also Wang Tianfang and others from Phoenix Factory, and even people from other aviation industry companies, including some people from the military.

For example, Xie Kangquan came over from the capital, specially came to have a look, and also congratulated Lin Feng.

Then, the two sat on the sofa outside and chatted for a while.

"Boss Lin, congratulations."

"Director Xie, thank you for coming here from the capital."

"It should." Xie Kangquan said, "In addition to taking a look at my siblings, I will also take a look at the design of our large military transport aircraft."

Lin Feng said, "Then let me go to the company with you and introduce the progress of the design to you. How about it?"

Xie Kangquan quickly waved his hands, "That's unnecessary, I can go there by myself."

Lin Feng didn't insist either, he still couldn't get away, so he called Fang Anping and Zhao Mingzhi respectively.

Xie Kangquan sat for about ten minutes and then left. He went to the Leihuo Aviation Engine Design Center. He probably went to the Leihuo Aircraft Design Center in the afternoon. He didn't stay here for too long.

Because of the natural birth and because she was young, Hu Xiaoxiao was able to get out of bed and walk around by herself the next day, and was discharged home after staying in the hospital for five days.

Living in a big villa is certainly much more convenient and comfortable than staying in a hospital. Not only are Yang Ling and Zhao Huanzhi taking care of him, but Lin Feng specially invited the most experienced confinement wife, and even invited two, the purpose is not to tire himself wife.

On the second day after returning from the hospital, under Hu Xiaoxiao's insistence, Lin Feng still went to the company and sat in his big office.

Knowing that the boss had gone to work, the senior executives of the company came over to show their faces, sit down, and chat for a while. After ten o'clock in the morning, everything finally quieted down again.

Sitting in front of his computer, Lin Feng began to draw the design drawings again, and continued to draw the design drawings of some key and important parts by himself.

Such as the fan blade design drawings of this engine.

This fan blade is undoubtedly a pioneering design, and it is also the world's top design. It is the first time to adopt such a brand-new design concept. Not only the blade shape is very beautiful, but also the efficiency is higher and the thrust generated is large.

This is a large hollow wide chord fan blade!
For modern high-bypass ratio engines, the fan is one of the most critical components, which can provide 80% of the thrust. The speed of the fan is required to reach 3000-4000 rpm, and the air flow through the fan can reach 10000 kg/s, so The design of the fan must be very careful, and the fan blade not only requires good aerodynamic performance but also light weight and resistance to foreign object impact.

The wide-chord fan blades designed by the system take these almost to the extreme.

The aerodynamic performance is excellent, the efficiency is high, the reliability is also very high, it is also durable, and the weight is very light.

Rolls-Royce is the aviation industry company that does the best job on fan blades.

It is said that Rolls-Royce's fan blades have high reliability, and neither the ordinary nor the wide-chord fan blades have ever been damaged in use.

For example, the damage-free record of RB211's ordinary fan blades exceeds 4000 million hours, and the RB211 and Taihe V250O engine's wide-chord fan blades exceed 1000 million hours, which is rare in the aero-engine manufacturing industry.

However, after the hollow wide-chord blades designed by the system come out, this record is estimated to be rewritten sooner or later. They are more advanced and better than Rolls-Royce’s hollow wide-chord blades!
Lin Feng personally drew the design drawings of the working blades of the first-stage fan of this engine, while thinking in his heart with satisfaction, as expected of a system, the things designed are really extraordinary.

If you let Rolls-Royce know that Leihuo Technology Industrial Group will surpass them in the field of wide-chord fan blades, I don’t know how it feels.

If the hollow wide-chord blades are also divided into three generations, the first-generation wide-chord fan blades use a titanium alloy honeycomb structure as the core, and the outer surface is covered with a layer of titanium alloy skin.

The second-generation wide-chord fan blade also uses a titanium alloy honeycomb structure as the core, but the skin is no longer a titanium alloy skin, but a composite material, which has a longer service life and higher safety.

The third generation is a systematically designed carbon composite hollow wide-chord blade with lighter weight, longer life, better aerodynamic performance, and higher safety and reliability.

Not only are the materials different, but carbon composite materials with higher strength are completely used, and the blade design is also completely different. The curved and swept fan blade design is adopted, aiming at the maximum relative thickness distribution in the chord direction, blade tip consistency, sweep shape, etc. The aerodynamic design parameters are completely different from the general wide-chord fan blades.

The technical information in his mind seemed to belong to Lin Feng himself, and he was very familiar with and understood them. Lin Feng knew that the extraordinary design of the fan of this engine alone surpassed those so-called world-renowned aero-engine companies by several blocks. The design technology of this part alone is enough for them to study and research for at least 20 to [-] years.

After spending half a day drawing out the fan blades of this level, Lin Feng simply printed out the design drawings, and the more he looked at them, the more satisfied he was.

The world's top fan blades!

After looking at this newly released design drawing, Lin Feng suddenly remembered that he heard that the Phoenix Aero-Engine Design Institute is also working on wide-chord fan blades.

Lin Feng still has a good understanding of the level of the domestic aviation industry. Wide-chord fan blades are cutting-edge technologies in the world, and they are at the initial stage in China.

However, after the release of the third-generation wide-chord fan blades, not only did it narrow the gap all of a sudden, but it also overtook it, from being behind to being in the lead.

For two days, Lin Feng basically stayed in his office and drew several design drawings in one breath, not only the design drawings of the wide-chord fan blades, but also the design drawings of the fan disc and fan case.

In addition, Fang Anping had already drawn and given the general design drawings of the fan part to Fang Anping. In this way, the most critical and important design drawings of the fan engine part of this engine were all drawn.

The design drawings of other components of the fan part can be designed on the basis of these design drawings, and the difficulty is not too great. Lin Feng believes that even if he does not provide technical knowledge during the design process, the fan part of Leihuo Aviation Engine Design Institute The design team can also complete the design work excellently.

Printed out all the drawings and checked them by himself. There was nothing wrong. Lin Feng raised his hand to look at the time and thought in his heart, let's talk about the fan part of this engine with relevant design experts and design backbones this afternoon. design.

I also told them about the design of this engine before, but that was a general description, and the design of each part and each component has not yet been specified.

These days, what are Fang Anping and the others doing, how is the design work going, and whether it is relatively smooth.

Lin Feng thought so in his heart.

Because he mainly focused on his wife and son for more than a week, and basically didn't come to the company, Lin Feng really didn't understand the specific design work.

Whether it was Fang Anping or Zhao Mingzhi, they were very knowledgeable and did not disturb Lin Feng, nor did they call to report something about the design.

In fact, without Lin Feng's guidance, the design work really encountered great difficulties.

For example, Leihuo Aviation Engine Design Center, several design experts, and then more than a dozen backbones, and several design supervisors, everyone is discussing the design of the fan part again.

This is the third design seminar this week. There are too many problems encountered, and everyone feels that it is too difficult.

For example, a design supervisor said under great pressure, "It's not that we don't work hard, but that the requirements in the design technical outline are too high. With such a service life, such high reliability, and such high efficiency, the fan part must adopt a brand new , a very advanced design."

"Yes, otherwise the design requirements will not be met at all, and the overall performance of this engine will plummet!"

"It would be great if there was President Lin's guidance!"

"."

Fang Anping also attended this meeting. Hearing everyone's words, his expression was more serious. After a long time, he had to say, "Everyone, don't pin your hopes on Mr. Lin. Mr. Lin is not free for a while, everything must rely on ourselves."

One of the design experts at the meeting said, "Mr. Lin has personally written the design technical outline, drawn the general design drawing of the fan part, and gave us a general introduction to the design of the fan part, which has given us a lot of help. .”

Although it is true, it is much better to start from scratch by yourself than to have nothing, at least there is a design technical outline and the general design drawing of the fan part.

Even so, the technical difficulty is still enormous.

One designer said, "We only know that the fan blades are designed with wide-chord blades, but we don't know how to design them and what the blade shape looks like, and we don't have relevant experience in this area."

Although I have experienced the design of the LH165 turbofan engine, which is also a world-class turbofan engine, there is still a big difference between the military small bypass ratio turbofan engine and the current high bypass ratio turbofan engine.

Especially in the fan part, the difference is even bigger.

For example, the fan of this engine has a diameter of 2.8 meters. A total of three-stage fans are used to generate about 80% of the thrust of the entire engine. The design difficulty is really not ordinary.

The meeting lasted for more than an hour, and it is estimated that there will be no substantial effect. Everyone knows that it is basically impossible to design a fan in a short period of time. It requires long-term exploration, repeated design verification, and step by step. It may be successful, and it may take three to five years, or even seven or eight years.

When Fang Anping was at a loss, Fang Anping's cell phone rang. Seeing that it was Lin Feng calling, he felt a little excited in his heart. He quickly motioned for everyone to calm down, and then said very respectfully.

"Boss, hello!"

Lin Feng's loud voice came from the phone clearly, "Mr. Fang, how is the design progress of the fan part?"

Fang Anping looked guilty and said apologetically, "Boss, we have encountered a big problem at the moment, and we are organizing a technical seminar."

He was interrupted before he finished speaking, Lin Feng said, "Don't hold any technical seminars, let's keep it informed, all design experts, design backbones and supervisors of the fan part will come to listen to my lecture at two o'clock in the afternoon. Let’s talk about the specific design of the fan part, of course, ordinary designers can also listen to it if they want to, and it is completely voluntary.”

Anyway, design experts, design backbones and supervisors of the fan part must come to attend the lectures, and others are voluntary.

Suddenly, Fang Anping was inexplicably surprised, even a little excited.

Everyone is at a loss, the boss is going to give a lecture, and it's the specific design of the fan part, it's like a dream!
"Okay, that's great." Fang Anping became excited uncontrollably, even in front of so many people, "I'll notify you right away, and all problems should be solved right away!"

[-] words will be issued first, and there should be [-] words left a little later in the evening. Today, I will strive to update [-] words. The main thing is to keep an eye on the monthly tickets and recommendation tickets in everyone's hands. I hope everyone can help us vote for this book!
(End of this chapter)