Since the end of last year, the turbofan 20 engine has been tested, and a series of factory test projects have been completed, such as slow state test, cruise state test, maximum power state test and so on.

Then, after completing the 30-hour long-term test, now, it has entered the 150-hour test, the engine is on the ground test platform, and the test is carried out every day, Li Tianfeng goes to the test workshop every day to take a look at the test situation, and take a look at the test data.

Hu Xiao's efficiency is still very high, and it didn't take half a month to sort out a thick list and put it on Li Tianfeng's desk.

This list includes many fields such as domestic aero engine design, materials, electronics, machining technology, etc., and many fields related to aero engines.

The list of scholars, experts, and even several academicians in these fields is also very detailed, and the names, workplaces, titles, ages, specialties, and research achievements of these people are also clear.

Li Tianfeng sat on his office chair, looked at the list carefully, and looked very seriously, after reading this thick list, Li Tianfeng thought in his heart, even if the military came forward, it is estimated that most of these people cannot be transferred to Tianfeng Technology Company. However, even if there is a small half, Li Tianfeng is very content.

Knowing that it was impossible to be transferred to the experts and scholars of Tianfeng Technology Company, Li Tianfeng directly crossed it out, and after sorting it out, this list has lost a lot of weight, but there are still hundreds of people.

The remaining hundreds of people, as long as one or two hundred people can be transferred to Tianfeng Technology Company, Li Tianfeng is very satisfied, after all, these are all elites in various fields, veritable elite talents.

Deletion, deletion, and consolidation. Involving more than a dozen fields related to aero engines, about five or six hundred people, this condensed version of the list, Li Tianfeng sent to Zhang Haiping.

After receiving Li Tianfeng's list, Zhang Haiping's phone call came soon. Zhang Haiping said with a smile: "I've already read the list, Mr. Li, your appetite is really not small, this can give us a big problem." ”

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

Li Tianfeng's little abacus, Zhang Haiping naturally knew it, but he didn't break it, Zhang Haiping just said: "Mr. Li." We do our best, but one thing must be told to you, these people, we also have to ask for each other's wishes, adopt the principle of voluntariness, people are willing to come, naturally there is no problem, if people are not willing. Then we can't help it. ”

Li Tianfeng said: "Minister Zhang, this is natural. I can't do a forced kidnapping, I understand that. ”

Zhang Haiping said: "Mr. Li, then wait for my news, this is not something that can be done in a few days." ”

………

Tianfeng Technology Co., Ltd., the turbofan 20 engine was tested on the test bench, and the trial production of RQ2000 engine parts was in full swing. The comprehensive design of the second-generation core aircraft is also in full swing.

The second-generation core machine of Tianfeng Technology Company is very advanced, involving a lot of new design theories and concepts, even if there are Li Tianfeng's design sketches. As well as the design technical outline, and even a series of design technical parameters, but there are still problems encountered in the design process.

Aero Engine R&D Center.

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

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

As a key component of aviation gas turbine engine, turbine plays a pivotal role in its development system, and its key technologies mainly involve blade design and optimization, blade cooling and heat transfer, turbine and engine compression system matching, turbine efficiency improvement, etc.

A designer with glasses, who looks to be at least forty or fifty years old, is a very rich designer, and is also the chief designer of the aero engine R&D center of Tianfeng Technology Company.

Aero engine designers, respectively, trainee designers, assistant designers, designers, chief designers, design experts, etc., chief designers, second only to design experts, is very remarkable, the entire Tianfeng Technology Company, the number of chief designers does not exceed three digits.

These people are all the chief designers of the turbine part, and everyone must have encountered a design problem, this chief designer with glasses, everyone calls Zheng Gong.

Zheng Gong said: "Let's take a look at the design parameters, the requirements are extremely high, which puts forward high requirements for the design and optimization of turbine blades. ”

Another chief designer next to him said: "Yes, Zheng Gong's analysis is completely correct, such turbine blades, aerodynamic performance and blade shape are different from our previous turbine blades." ”

Zheng Gongdao: "You see, the material of the high-pressure turbine guide vane clearly proposes to use ceramic matrix composite materials, instead of our previous third-generation single crystal guide vane, which is a completely new blade, I have designed it for a long time, and now it is stuck." ”

"Hmm." A few people next to him frowned and nodded.

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

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

Everyone nodded in unison, and Zheng Gong even said: "Mr. Li, we are really stuck, and we have a lot of questions that we need to ask you." ”

Li Tianfeng smiled slightly, sat down next to everyone, Li Tianfeng said: "Let's talk about it, what thorny problems have you encountered?" ”

Therefore, everyone spoke one by one, and told Li Tianfeng about the incomprehension and some tricky points they encountered in the design process.

After listening, Li Tianfeng said: "This is a new turbine, our core machine, high-pressure turbine stage, low-pressure two-stage, although the turbine working blade is still the third generation of single crystal blades, but the guide turbine blade is made of new materials, that is, the ceramic matrix composite materials successfully developed by our materials engineering center." ”

"The design of this turbine part not only involves new materials, but also completely new design theory, because it is a high-load and high-efficiency turbine. The efficiency of such a turbine is more than 30% higher than that of our turbofan 16 core engine, the load is increased by more than 20%, and the service life is not less than 20%. ”

"In other words, 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 service life is longer. ”

"Our turbine guide vanes, which are made of ceramic matrix composites, are 50 percent lighter and 20 percent less cooling air than typical nickel-based super-heat-resistant turbine guide vanes; Ceramic matrix composites are also used in the low-pressure turbine guide vanes, and a three-dimensional fiber structure is used to improve strength and durability. Its low density and high temperature resistance greatly reduce weight. Reduced cooling airflow ......"

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

Li Tianfeng spoke in great detail, such an A4 blank paper, Li Tianfeng wrote three sheets of paper, and everyone gathered around Li Tianfeng and listened very carefully. There's a bit of a sense of fascination.

After talking for more than an hour, Li Tianfeng said, "Now." Does everyone basically understand? ”

Everyone clicked a little bit, after Li Tianfeng's explanation, and finally pierced the last layer of window paper, everyone finally understood, there was a feeling of sudden enlightenment, it was like pushing aside the dark clouds to see the sun and the moon.

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

Li Tianfeng said: "In the future design process, if you still have questions, you can ask me." We communicate together. ”

Li Tianfeng plans to come to the R&D center often to take a look at the R&D center during the period when the comprehensive design of the second-generation core machine is launched, and to guide you if you have any questions.

Today, accompanied by Sun Xiaoping and Qiu Wenan, I went to the design rooms of the R&D center to take a look at everyone's design, and if we found that we didn't understand, Li Tianfeng would patiently guide and explain.

After guiding Zheng Gong and others in the design of the turbine part, Li Tianfeng returned to his office in the R&D center.

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

Sun Xiaoping said: "Boss, the design of our second-generation core machine, the design of the combustion chamber part has the least number of problems and is the smoothest, and the design of the rest of the parts has encountered a lot of 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, and it is naturally smooth.

At the beginning, when designing the RQ2000 gas turbine engine, Li Tianfeng took precautions and adopted a very advanced combustion chamber design, which laid a good foundation, and 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 design of the combustion chamber must be very smooth, Li Tianfeng said: "Mr. Sun, during this period of time, our work focuses on the design of the second-generation core machine, as long as I am free, I will work in this office, you tell everyone, if you have any design problems, you can come directly to this office to find me." ”

Sun Xiaoping said: "Well, I will tell you right away that the boss is personally in charge of the R&D center, and the design of our second-generation core machine will definitely go very smoothly." ”

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

Sun Xiaoping said with a happy face: "Boss, we have recruited another batch of talents in aero engine design?" ”

Li Tianfeng said: "Our second-generation core aircraft, the military project 771 project, the military support for this project is very strong, ready to draw elite soldiers from the country's major aero engine design institutes to supplement us, you must be prepared." ”

Sun Xiaoping was overjoyed, "Boss, this is great, with this group of elite soldiers, our design strength will definitely go to a new level." ”

…………

Today's three watches, the first one is sent! (To be continued......)