Since the end of last year, the turbofan 20 engine has begun to be tested, and a series of factory test projects have been completed one after another, such as slow train test, cruise test, maximum power test, etc.

Then, a 30-hour long test run was completed. Now, another 150-hour test run was entered. The engine was on the ground interview stand, and the test run was conducted every day. Li Tianfeng went to the test workshop every day to check the test run situation and the various test run data.

Hu Xiao is still very efficient. In less than half a month, he sorted out a thick list and placed it on Li Tianfeng's desk.

This list covers many fields such as domestic aero engine design, materials, electronics, mechanical processing technology, etc., including many fields related to aero engines.

Scholars, experts, and even several academicians in these fields are very detailed, and the names, work units, titles, ages, expertise, research results, etc. of these people are also clear.

Li Tianfeng sat on his office chair, carefully looking at the list, and reading it very seriously. After reading this thick list, Li Tianfeng thought to himself that most of these people, even if the military comes forward, probably cannot be transferred to Tianfeng Technology Company. However, even if there are only a small part of them, Li Tianfeng is very content.

Although Li Tianfeng knew that it was impossible to be transferred to Tianfeng Technology Company, he crossed it out directly. After sorting it out, this list lost a lot, but there were still hundreds of people.

Li Tianfeng was very satisfied with the remaining hundreds of people, as long as one or two hundred people were transferred to Tianfeng Technology Company. After all, these were all elites and veritable elite talents in various fields.

After deleting and deleting, it involved more than a dozen areas related to aircraft engines, including about five or six hundred people. Li Tianfeng sent this streamlined list to Zhang Haiping.

After receiving this list from Li Tianfeng. Soon, Zhang Haiping called, and Zhang Haiping smiled and said, "I have read the list, Mr. Li. Your appetite is really big, which gives us a big problem."

Li Tianfeng said: "Minister Zhang, it's all for our 771 project."

Zhang Haiping naturally knew Li Tianfeng's little abacus, but it did not point it out. Zhang Haiping just said: "Mr. Li, we do our best, but one thing must be told to you. We must also ask the other party's intentions and adopt the principle of voluntaryism. If others are willing to come, there is naturally no problem. If others are unwilling, then we have no choice."

Li Tianfeng said: "Minister Zhang, of course, I can't engage in compulsory kidnapping, I understand this."

Zhang Haiping said: "Mr. Li, then wait for my news. This cannot be done in a few days."

………

Tianfeng Technology Company, the turbofan 20 engine is being tested on the test bench, the trial production of rq2000 engine parts is being fully launched, and the comprehensive design work of the second-generation core engine is also being fully launched.

The second-generation core machine of Tianfeng Technology Company is very advanced and involves many new design theories and concepts. Even with Li Tianfeng's design sketches, design technical outlines, and even a series of design technical parameters, problems still encountered during the design process.

Aero Engine R&D Center.

Several design backbones of the turbine part are discussing the difficult problems encountered in the design process. In front of everyone, there is a design sketch, which is a design sketch of the turbine part drawn by Li Tianfeng himself.

The second-generation core engine turbine part is a very advanced high-load and high-efficiency turbine. Such a turbine is definitely at the forefront of today's world.

As a key component of aviation gas turbine engines, turbines play an important role in their development system. Their key technologies mainly involve blade design and optimization, blade cooling and heat transfer, matching of turbines and engine compression systems, and improving turbine efficiency.

A designer wearing glasses, who looks at least forty or fifty years old, is an extremely rich designer and the chief designer of Tianfeng Technology's aero engine research and development center.

The designers of aircraft engines are trainee designers, assistant designers, designers, supervisor designers, chief designers, design experts, etc. The chief designers are second only to design experts. It is amazing. The number of chief designers in the entire Tianfeng Technology Company does not exceed three digits.

These people are all chief designers of the turbine part. Everyone must have encountered design problems. This chief designer wearing glasses is called Zheng Gong.

Zheng Gong said: "Looking at the design parameters, the requirements are extremely high, which puts high requirements on the design and optimization of turbine blades."

Another chief designer next to him said: "Yes, Zheng Gong's analysis was completely correct. Such turbine blades have different aerodynamic performance and blade shapes than our previous turbine blades."

Zheng Gong said: "You see, the materials of high-pressure turbine guide blades clearly propose to use ceramic matrix composite materials instead of our third-generation single crystal guide blades. This is a brand new blade. I have designed it for a long time, but now it is stuck."

"Yes." The people next to him frowned and nodded.

Just when everyone was feeling very difficult and didn't know how to start, the door of this small conference room was pushed open, and Li Tianfeng, accompanied by Sun Xiaoping and Qiu Wen'an, walked in together.

Seeing everyone's appearance, Li Tianfeng smiled, "How is it? Are you having problems in the design process?"

Everyone nodded together, and Zheng Gong even said: "Mr. Li, we are really stuck. There are many questions we need to ask you."

Li Tianfeng smiled slightly and sat down next to everyone. Li Tianfeng said, "All you guys can tell me, what are the difficult problems you have encountered?"

So, everyone spoke one by one and told Li Tianfeng one by one about the confusions they encountered in the design process and some of the more difficult things they had.

After listening, Li Tianfeng said: "This is a brand new turbine. Our core machine is one-stage high-pressure turbine and two-stage low-pressure turbine. Although the turbine working blades still use the third-generation single crystal blades, the guide turbine blades use new materials, which is the ceramic matrix composite material successfully developed by our Materials Engineering Center."

"The design of this turbine part not only involves new materials, but also designs a brand new design theory, because it is a high-load and high-efficiency turbine. Such a turbine has an efficiency of more than 30% higher than the turbine efficiency of our turbofan 16 core machine, a load of more than 20%, and a service life increase of no less than 20%.

"That is to say, such a turbine outputs the same power. Compared with the turbofan 16, the turbine weight and size are greatly reduced, the gas utilization efficiency is higher and the life span is longer."

"Our turbine guide blades, such blades, use ceramic-based composite materials, which reduces weight by 50% and reduces cooling air by 20% compared with typical nickel-based ultra-heat-resistant turbine guide blades; ceramic-based composite materials are also used on low-pressure turbine guide blades, and use three-dimensional fiber structures to improve strength and durability. Its low density and high temperature resistance greatly reduce weight and reduce cooling airflow..."

After introducing these, Li Tianfeng took a piece of white paper and a pen and began to explain some new theories and concepts that this turbine design will involve.

Li Tianfeng said in detail. Li Tianfeng wrote three pieces of A4 white paper, and everyone surrounded Li Tianfeng and listened very seriously, feeling a little intoxicated.

After talking for more than an hour, Li Tianfeng said: "Now, do you basically understand?"

Everyone clicked a little bit, after Li Tianfeng's explanation, he finally broke the last layer of window paper. Everyone finally understood that he felt a sudden enlightenment, which was like pushing away the dark clouds and seeing the sun and the moon.

"Well, Mr. Li, now we finally understand that there should be no problem."

Li Tianfeng said: "If you have any questions in the future design process, you can ask me and let's communicate together."

Li Tianfeng plans to take a look at the R&D center during the period when the second generation core machine is fully designed, and he will often come to the R&D center to see everyone's designs. If you have any questions, please give me some guidance.

Today, accompanied by Sun Xiaoping and Qiu Wen'an, I went to the design rooms of the R&D center to take a look and check out everyone's design situation. Whenever I find that everyone doesn't understand, Li Tianfeng will patiently guide and explain.

After guiding Zheng Gong and others' turbine design, Li Tianfeng returned to his office in the R&D center. This office is usually rarely visited, but it is neatly tidy and clean.

After sitting down, Li Tianfeng listened to Sun Xiaoping's report.

Sun Xiaoping said: "Boss, the design of our second-generation core machine has the least problems in the combustion chamber part and the most smoothest. The design of the other parts has encountered many problems."

The design of the combustion chamber part basically follows the combustion chamber design of the rq2000 gas turbine engine, and there is basically no big difference, so it is naturally smooth.

When designing the rq2000 gas turbine engine, Li Tianfeng planned ahead and adopted a very advanced combustion chamber design, which laid the foundation. The second-generation core engine design basically directly translated the combustion chamber design of the rq2000 gas turbine engine.

Li Tianfeng nodded, knowing that the combustion chamber design must be very smooth. Li Tianfeng said: "Mr. Sun, during this period, our focus is on the design of the second-generation core machine. Whenever I have time, I will work in this office. Tell everyone, if you have any design problems, you can come to this office to find me directly."

Sun Xiaoping said: "Well, I'll tell you immediately. The boss is in charge of the R&D center himself. The design of our second-generation core machine will definitely be very smooth."

Li Tianfeng said: "Mr. Sun, let me tell you that a group of elite soldiers will soon supplement the R&D center."

Sun Xiaoping said happily: "Boss, we have recruited a group of talents in aviation engine design?"

Li Tianfeng said: "Our second-generation core aircraft, the military has established the 771 project, and the military has strong support for this project. We are preparing to draw elite soldiers and strong generals from major aviation engine design institutes across the country to supplement us. You must be prepared."

Sun Xiaoping was overjoyed, "Boss, this is great. With these elite soldiers and strong generals, our design strength will definitely reach another level."

…………

Today's third update, the first update is here! (To be continued.)
Chapter completed!