Start with the aviation industry

Chapter 266 Re-rising Hope

Of course, Sun Jiangbo knew that Leihuo Technology Industry Group was going to develop turbofan engines. After all, both units were in Fenghuang City, and the relationship was considered close.

But he didn't know the details, nor was he optimistic.

Turbofan engine too!

It is much more difficult than a turboshaft engine, and there is a big difference between the two. Being able to produce a world-class turboshaft engine does not mean that a world-class turbofan engine can be produced.

Because of this idea, Sun Jiangbo didn't go to understand it in detail, because he felt that it was too difficult and almost impossible.

So, he shook his head and smiled, "Old Zhu, you actually came here for the turbofan engine of Leihuo Technology Industrial Group!"

"That's right, I came here just to launch this engine, otherwise, what would I have come all the way here for?"

"I heard that this is a world-class turbofan engine, but I'm not familiar with the people in Leihuo Technology Industrial Group. It would be best if you could connect me."

Sun Jiangbo reminded, "It's no problem for me to help you connect, but I advise you not to have too much hope, this is a turbofan engine."

"You should be more aware of the technical difficulty than I am. Even if they are the Leihuo Technology Industrial Group, I'm not optimistic. Even if they can barely make it, it is estimated that it will be eight or ten years later."

After listening to Sun Jiangbo's words, Zhu Zhiwen realized that the hope in his heart was shattered, so he shook his head and gave a bitter smile.

"It seems that I was impulsive. I only wanted to have a domestically produced turbofan engine, but I completely ignored the current level of the domestic aviation industry, especially the research and development strength in the field of turbofan engines."

Sun Jiangbo comforted, "Old Zhu, since we are here, we will leave in two days. I think at least we are not in a desperate situation. At least Lao Maozi is still willing to sell us the engine, although the quantity is a little smaller."

After the hopes in his heart were shattered, Zhu Zhiwen seemed to be in a much lower mood, and his voice became softer, "I'm leaving early tomorrow morning, and there are too many facts at hand."

Sun Jiangbo said, "Let's go the day after tomorrow. We haven't seen each other for more than two years. In addition, I will take you to visit our factory, focusing on our turbofan engine."

This is a turbofan engine that was surveyed and imitated by Lao Maozi. The thrust is relatively small and the thrust-to-weight ratio is not high, but it is also one of the most advanced turbofan engines in China.

That's right, although such a turbofan engine is considered second-rate at most in the world, and may even be reluctant to be second-rate, it is indeed one of the most advanced in China.

It can be seen that the gap between the domestic turbofan engine field and developed countries at this time is at least 30 years behind.

With such a big gap in backwardness, it is no wonder that even Sun Jiangbo is not optimistic about Leihuo Technology Industrial Group's design and development of turbofan engines.

In the afternoon, Sun Jiangbo personally accompanied Zhu Zhiwen to visit the Phoenix factory, went to the main manufacturing workshop, and even went to the final assembly workshop and the test workshop.

In addition to looking at the turboprop, piston, and turboshaft engines, the focus was on the turbofan engine in the trial production stage.

It started trial production two years ago, and it is still in trial production. There are many problems, but Sun Jiangbo still feels very proud and has a lot of face.

Because this is one of the most advanced turbofan engines in China, it will be the motivation for a domestic advanced trainer in the future.

After a visit, Sun Jiangbo asked, "Old Zhu, I think our turbofan engine is good. If you change the design, change that fighter plane to twin engines, and use two turbofan engines like this, then As soon as the engine problem was solved."

Zhu Zhiwen shook his head.

This is definitely not a good suggestion, he is not interested, and he will basically not adopt it!

The thrust of this turbofan engine is too small, and its reliability and service life have not met his requirements. When the two engines are put together, they may be able to reach a maximum thrust of about 100KN, which barely meets the thrust requirement, but it also brings series of questions.

Seeing that Zhu Zhiwen didn't speak, but just shook his head, Sun Jiangbo didn't give up easily, and continued to lobby, "Old Zhu, you should carefully consider my suggestion. This is a good choice."

Zhu Zhiwen didn't get entangled in this issue. If the truth is told, it might be a little hurtful to say that he doesn't like this turbofan engine. After all, they have had a personal relationship for 20 to [-] years.

He changed the subject, "Old Sun, I've already read what I need to read. I'll go back tomorrow morning. There are too many things at hand."

Sun Jiangbo continued to ask to stay, "We have a turbofan engine test run the day after tomorrow, why don't you stay and take a look?"

After hesitating for a while, Zhu Zhiwen still declined politely, "No, next time, I will definitely come and take a look when I have time."

Hearing this, Sun Jiangbo was slightly disappointed.

He really wanted to sell this turbofan engine to Zhu Zhiwen. It would be perfect if the domestic fighter currently being designed and developed could use their turbofan engine.

It's a pity that Zhu Zhiwen doesn't seem to be very interested.

…………

Leihuo Aviation Engine Design Institute.

The design and development of this turbofan engine is in full swing, and many design drawings have begun to be designed. Lin Feng basically goes to Leihuo Aero Engine Design Institute every day.

In addition to teaching everyone, he also guides everyone in various designs.

In the training classroom, there were more than [-] people sitting, many of them were young faces, and they were listening to Lin Feng's lecture seriously.

What we are talking about is the design of the tail spray part. Lin Feng personally drew the general design drawing of the tail spray part.

This is the vector nozzle!

This engine uses a vector nozzle design. Of course, it can also be used without a vector nozzle. If this turbofan engine is only used as the motive force of a third-generation fighter, it can only use linear injection.

Therefore, this engine can have two tail injection methods, one is one-dimensional, that is, a straight nozzle, and the other is a vector nozzle, which can be used in different ways in practice.

Lin Feng spoke in great detail. He gave a total of two lectures, each one and a half hours, with only a 10-minute break in between.

Originally, only No. 80 and No. [-] people from the fourth design room were required to attend the class, but dozens of people from other design rooms came, and the number of people attending the class directly exceeded [-].

"Everyone, that's all for the design of the tail spray. If you have any technical difficulties in the follow-up design process, you can ask me, or the chief teacher Zhang Wei."

Zhang Wei stood up and said, "Thank you Mr. Lin for explaining the design of the tail spray for us. After listening to this class, everyone. How did you gain?"

Immediately, an answer sounded!

"Excellent speech!"

"Mr. Lin, give us another class if you have time, and it's still about the design of the tail spray!"

"It's only now that I know that the design of the tail jet also has such a lot of knowledge!"

"..."

Hearing everyone's words, Lin Feng smiled happily. It is a good thing that everyone has gained something. As for telling everyone about the design of the tail spray, that is also possible.

With the progress and development of the design work, in another month or two months, let's talk about the design of the tail spray, and the effect will be different.

Since the start of the design work, Lin Feng has successively told everyone about the design of the fan, compressor, turbine, and combustion chamber.

The design of this engine has been fully rolled out, and various parts have begun to be drawn. The progress is gratifying.

Whether it is Fang Anping or Zhang Wei, the senior executives of Leihuo Aviation Engine Design Institute believe that it is very possible to complete the overall design in about one and a half years.

.........

Phoenix Factory Guest House.

Zhu Zhiwen was waiting for breakfast and was going to fly back this morning. To be honest, he was a little disappointed.

I didn't expect that even Sun Jiangbo was not optimistic about Leihuo Technology and Industry Group after making a trip for nothing, so there was no need to go to Leihuo Technology and Industry Group. Even if it passed, there would be no surprises.

"Mr. Zhu, Phoenix Factory has arranged a car, come here later and take us to the airport."

Zhu Zhiwen nodded and looked at the time, it was [-]:[-] in the morning.

After breakfast, everyone waited for the car from Phoenix Factory to come, but before the car came, Zhu Zhiwen's phone rang.

Xie Kangquan called, "Old Zhu, I heard that you went to Fenghuang City, have you arrived at Fenghuang Factory now?"

Zhu Zhiwen sighed, "Old Xie, we are going to go back this morning, and we will go to the airport later."

"Why are you going back so soon? Didn't you go to Leihuo Technology Industry Group?"

Zhu Zhiwen briefly explained the situation, and then said, "Mr. Sun is right, turbofan engines are so easy."

Xie Kangquan said, "If it is other aviation industry companies, we are really not optimistic, but if it is replaced by Leihuo Technology Industry Group, it will be completely different."

"Old Zhu, I suggest you don't go back in a hurry. You've already arrived in Fenghuang City anyway, so go over and have a look. I can contact Mr. Lin for you."

Zhu Zhiwen was a little moved!
The hope that had been shattered in my heart slowly rose again, and after hesitating for a while, I said, "Okay, please help me get in touch."

Leihuo Technology Industry Group.

Not long after Lin Feng started working, he was sitting in his office, waiting to go to the aero-engine design institute to guide everyone's design work, or draw a few design drawings first.

This turbofan engine has three stages of fan blades. Lin Feng has already drawn the first stage fan blades himself. The receiver needs to be drawn out by itself.

Undoubtedly, the fan casing is a very important and critical part, with complex structure and high precision, involving a large number of complex calculations.

If it is handed over to Zhang Wei's team for design, this is definitely a tough nut to crack, and Lin Feng is going to draw it out.

For Lin Feng, it was one or two days, at most three days, but for Zhang Wei and the others, it probably took several months.

Even more than that, after the drawing is drawn, such an important and critical part needs to be designed and verified, and then modified, perfected, and repeated, it takes a lot of time, manpower and material resources to succeed.

It only takes one or two days for Lin Feng, and the design is completed after the design drawings are drawn. There is no need for design verification, and it can be manufactured directly according to the drawings.

This is also the reason why the Leihuo Technology Industrial Group has designed and developed the LH1500 turboshaft engine for more than one year, and it is completely impossible to replace it with other aviation industry companies within eight or ten years.

"Then draw the design drawings of the fan case."

However, before turning on the computer, the phone on the desk rang.

Xie Kangquan's voice came from the phone, "Mr. Lin, Zhu Zhiwen wants to come to visit you, mainly to learn about this turbofan engine. He entrusted me to lead the line. Do you have time?"

Zhu Zhiwen! ! !
Of course Lin Feng knew!

He is currently the chief designer of a new type of domestic fighter. This fighter is famous in later generations, and it is one of the representatives of the third generation fighter in the whole world.

It is comparable to F16 fighters and Rafale fighters. It has a large production volume in later generations. It is one of the main domestic fighters, and many fighters are exported.

Zhu Zhiwen actually thought that his company knew about this turbofan engine!

Lin Feng immediately became happy, which is a good opportunity for the entire Leihuo Technology Industrial Group.

If your own turbofan engine can be the motivation for this fighter, you would be happy.

Before designing and developing this turbofan engine, Lin Feng's positioning was very accurate, making it an engine for domestic fighters, including the multi-purpose, all-weather light fighter currently under development.

And the future fourth-generation domestic stealth fighter can use this turbofan engine as power.

cool!

Chief designer Zhu actually took the initiative to come to the door!
Lin Feng said without hesitation, "I have time, welcome them to visit Leihuo Technology Industrial Group!"

As for the original plan to draw the design drawings of the fan casing of this turbofan engine today, but this matter can be postponed to tomorrow, or even the day after tomorrow.

Xie Kang said, "Great, then I'll call Lao Zhu right away."

Putting down the phone, Lin Feng cheered up a little, there is such a surprise, great!
Lin Feng knew that the biggest problem with the fighter currently being developed was the engine. It had been using the Russian-made AL-31 turbofan engine, and it was not until more than ten years later that it began to use our domestic engine.

However, domestic engines still have a series of problems, such as a slight lack of thrust, which affects the maneuverability of fighters, such as a relatively short lifespan, and reliability is not as good as Russian-made engines, etc.

These are the pains of this fighter plane. If there is no engine problem, it will develop better. Even the development process will be much shorter, and the number of mass production will be greatly increased.

Lin Feng picked up the phone, "Director Ding, Zhu Zhiwen, the chief designer of a certain domestic fighter, will come to visit. You can pick it up at the guest house where you brought the car to the Phoenix factory. In addition, the guest room will be ready."

…………

After Zhu Zhiwen took Xie Kangquan's call, he was about to go to Leihuo Technology Industrial Group to take a look. He thought in his heart, Mr. Lin, please don't let me down, our fighter plane really needs a qualified domestic engine.

Within a few minutes, the car from Phoenix Factory came over, and even Sun Jiangbo came over in person.

After getting out of the car, Sun Jiangbo said, "Old Zhu, you really have to go back and don't stay for two days."

Zhu Zhiwen said, "Originally I planned to go back this morning, but I have changed my plan now, and I still plan to go to Leihuo Technology Industrial Group to have a look."

what!
Didn't we agree to go back this morning?

Why do you still want to go to Leihuo Technology Industry Group!
"Old Zhu, I'm really planning to go to Leihuo Technology Industrial Group!"

"Yes, just now Xie Kangquan called and suggested that I go to Leihuo Technology Industrial Group. He is very optimistic about this turbofan engine."

Really!
Xie Kangquan was so optimistic about this turbofan engine, which made Sun Jiangbo a little surprised. While he was in a daze, Zhong Zimin came over, and deliberately loudly said from a long distance, "Old Zhu, you will not come to my office even when you arrive at the Phoenix Factory." Sit down, even come over for a cup of tea."

Zhu Zhiwen apologized, "I'm sorry, I was in such a hurry, I was still in a hurry to go back just now."

Zhong Zimin actually didn't take the matter to heart, "Director Xie called me just now, let's go, I will accompany you to Leihuo Technology Industrial Group."

He has a good relationship with Lin Feng, and he really wants to know more about this turbofan engine. Even if Xie Kangquan didn't make this call, he is going to take a trip to Leihuo Technology Industrial Group when he has time.

"Mr. Zhong, you really came with me." Zhu Zhiwen was pleasantly surprised!

I was worried that it was the first time I met Lin Feng, and we were not familiar with each other. Now there is no need to worry, because Zhong Zimin is a frequent visitor of Leihuo Technology Industry Group and is very familiar with the situation there.

"Go, I'll go there with you." Zhong Zimin said loudly.

Sun Jiangbo hesitated for a moment, and then said, "That counts as me, I haven't been to Leihuo Technology Industrial Group for a long time."

Of course, this is just an excuse. Sun Jiangbo's real intention is to learn more about this turbofan engine produced by Leihuo Technology Industry Group.

He has never been optimistic about this turbofan engine, because as far as he knows, it is a world-class turbofan engine.

He didn't believe that Leihuo Technology Industrial Group could design and develop such a turbofan engine. Since Xie Kangquan was so optimistic, he wanted to go and see if he was right or Xie Kangquan was right.

Zhong Zimin said, "Mr. Sun also wants to go there, so let's go there together. I think Mr. Lin is also welcome."

Within a few minutes, Ding Haixia arrived, so the group boarded the car and headed to Leihuo Technology Industrial Group.

In Leihuo Technology Industrial Group, everyone received warm hospitality and was arranged in the best reception room. They didn't have to wait too long at all, and Lin Feng came over soon.

Zhong Zimin said first, "Mr. Lin, let me introduce you. This is Master Zhu Zhiwen."

Lin Feng said, "Master Zhu, I have admired your name for a long time, welcome to Leihuo Technology Industrial Group."

There was a burst of pleasantries and politeness between the two parties, as if they had been friends for many years.

After chatting for a while, Zhu Zhiwen took the initiative to talk about the purpose of his visit, "Mr. Lin, to be honest, I came here for your turbofan engine."

Lin Feng nodded, knowing that the opponent came here for this turbofan engine, because what this fighter plane needs most is an excellent engine.

(End of this chapter)