The development of this turbofan engine of Tianfeng Technology Company has been carried out in an orderly manner, and the comprehensive detailed design stage has entered the peak period, and many key and key components have been designed.

This is the first turbofan engine of Tianfeng Technology Company, Li Tianfeng attaches great importance to it, and Li Tianfeng personally checks the design of key and key components.

Technical Center, Aero Engine Design Institute.

As the chief designer of this turbofan engine, Sun Xiaoping is presiding over the meeting, and the designers of the compressor part are all in the conference room, because the discussion is about the important components of the engine, and Li Tianfeng also attended the meeting.

On the projector, the 3D color map of the compressor part is projected on the screen, and everyone here can clearly see that this turbofan engine, although it can only be regarded as a medium-sized turbofan engine, is very advanced in design, and adopts a lot of very advanced design technology, such as the design of the compressor part is an advanced load compression system.

The goal of high-pressure compressor technology development is to have a high single-stage pressure ratio, fewer stages, a high thrust-to-weight ratio, and good flight performance. The compressor part of the turbofan engine of Tianfeng Technology Company adopts a compression system for advanced loads.

Among them, the low aspect ratio design, pneumatic sweep design, integral blisk, integral blade ring, compressor stability and active control are representative new technologies in advanced load compression systems.

The low aspect ratio blade is the wide chord blade, which widens the chord length compared with the narrow chord blade, shortens the length of the compressor, and improves the resistance to foreign object damage, fatigue resistance and stall margin. It can also reduce the number of compressor parts, reducing production and manufacturing costs

The fan blades of this turbofan engine are designed with hollow titanium alloy wide chord blades, and the design has been completed. The fan blades have entered the trial production stage.

The compressor blades are also designed with wide chord blades, integral titanium alloy wide chord blades, which are widely used in turbofan engines with large bypass ratio and small bypass turbofan engines with high thrust-to-weight ratio. GE's TECH56 technology program demonstrator and F119 engine and EJ200 engine all use this wide chord blade.

Such a blade design, looking at the world, is also very advanced, in terms of domestic. It was an absolute first.

Sun Xiaoping said loudly: "Our compressor part has basically completed the preliminary design, now let's get together, brainstorm, and discuss the design of the compressor part, especially the design of some key parts." ”

After Sun Xiaoping finished speaking, the picture on the projector turned, and what appeared in front of everyone was the first-stage compressor blade, which was the largest for the compressor. The longest, and the subsequent steps become smaller and shorter.

The first stage compressor blade is very important, and the design technology content is also very high, Sun Xiaoping combined with the design drawing of this stage of blade, introduced the design of this blade.

"This is our first-stage compressor blade, the overall titanium alloy wide chord blade design, using the most advanced. The most reasonable aerodynamic and structural performance design ......"

Sun Xiaoping's introduction was very detailed, and Li Tianfeng also listened carefully. And I also carefully looked at the design drawings, and even took the draft paper and pen, calculated it, wrote it, drew it, and from time to time. Li Tianfeng still frowned and thought about it.

This kind of blade, only to complete the preliminary design, the problem will definitely be some, Sun Xiaoping after the introduction, many designers present have expressed their opinions. There are even a small number of people who have pointed out some deficiencies and minor problems in the design of the blades.

Sun Xiaoping motioned to the two designers in charge next to him to record all these things one by one, and then combine these problems to improve and improve the design after the meeting.

Everyone's speech is very active, very warm, such a meeting, such a speech, has almost become a tradition of Tianfeng Technology Company, you can speak freely, without any scruples, if you are right, it will be adopted, if you say it wrong, it doesn't matter much.

For the design of the compressor blades, everyone said a lot, and even, there were two designers, because of the design problem zài controversy, in the meeting fierce debate, blushing and thick neck, such a design problem controversy, completely allowed.

After discussing for twenty or thirty minutes, everyone basically said the same, Sun Xiaoping said: "Mr. Li, you can also say a few words to correct our shortcomings in design." ”

Li Tianfeng's design level, Sun Xiaoping is very admired, the designers of the design institute, but also very admired Li Tianfeng's design level, in everyone's mind, Li Tianfeng is everyone's heart high in the heart!

Everyone looked at Li Tianfeng, waiting for Li Tianfeng to speak, Li Tianfeng smiled slightly, and said loudly: "The design of this level of compressor blades is generally good, and it fully grasps the essence of the design of wide-chord blades, but there are still some slight deficiencies, these aspects should be improved, such as the coordinate size of the blade shape should be improved in this way......"

Li Tianfeng pointed out the deficiencies in the design of the blades one by one, Sun Xiaoping hurriedly recorded them one by one, there are some places, Sun Xiaoping himself did not see that there are deficiencies or problems, Li Tianfen came out one by one, Sun Xiaoping admired it in his heart, worthy of Mr. Li, this design level is really a mountain to look up.

Low-pressure compressor: 4 levels. High-pressure compressor: 5 levels. The blades of the compressor were discussed one by one, and a lot of problems were collected, and the design will be improved and perfected after the meeting.

Low aspect ratio blades have become a key technology for advanced aero-engine compression systems, and will be the focus of future development when combined with 3D aerogrape, hollow structure, blisk structure and lighter titanium matrix composite technology.

The turbofan engine of Tianfeng Technology Company adopts the overall blisk structure of titanium matrix composite materials, which is very advanced in design.

The above-mentioned wide-chord compressor blades and titanium matrix composite compressor wheels are made by bonding process, and their weight is only 30% of that of conventional metal material disc drum structure.

This design not only meets the requirements of high speed and high temperature, reduces the quality of the disc, but also reduces the manufacturing cost and improves the maintainability.

This kind of design, the technical content is very high, it was Li Tianfeng personally given the design sketch, combined with Li Tianfeng's design sketch, the design team led by Sun Xiaoping carried out the detailed design, and now, after completing the preliminary design, we are ready to discuss and review such a design together.

Sun Xiaoping personally introduced the design of the overall leaf plate, after the introduction, everyone according to the convention, brainstorming, some design zài deficiencies, everyone pointed out one by one, finally, Li Tianfeng also spoke, pointed out some key places.

Combined with these problems, after the design is improved and perfected again, the design will be basically mature, and in the end, Li Tianfeng will definitely check it himself again.

After recording these problems, Sun Xiaoping said a little worriedly: "Boss, will there be a problem with our titanium matrix composites?" ”

Li Tianfeng waved his hand and said: "Don't worry about this, our materials engineering technology center is carrying out research on this new material, and there have been preliminary results, which will not delay the development of our engine." ”

After thinking about it for a while, Li Tianfeng said: "However, because it involves new materials, new designs, and after the design is completed, and the parts are trial-produced, we have to carry out a strict low-cycle fatigue rotation test, and we can only install our engine after sufficient testing and verification." ”

Sun Xiaoping nodded and said: "Boss, we definitely dare not relax in this regard, we must go through a strict low-cycle fatigue rotation test, and after the test is fully qualified, we will officially install the machine." ”

The meeting lasted a whole day, from morning to afternoon, the design of the compressor part of the turbofan engine was fully discussed, Sun Xiaoping collected a lot of problems, and will combine these problems to improve and improve the design of this advanced load compression system.

This turbine engine is very advanced in design, not only the compressor part adopts the design of the advanced load compression system, the combustion chamber part also adopts the design of the high thermal load combustion chamber, and the turbine part adopts the design of the high-load turbine and so on.

For this engine, Li Tianfeng has great hopes.

So many advanced design technologies have been adopted in the design, involving a lot of new materials and new technologies, and a lot of new technology will be used in the future when processing and manufacturing parts.

Tianfeng Technology Co., Ltd. has carried out the design of this engine in an orderly manner, carried out the detailed design in an all-round way, and even some parts have been designed and have begun to enter the trial production stage, such as the fan blades mentioned above.

…………

Linhai Technology Company.

With the strong injection of hundreds of millions of funds from Tianfeng Technology Company, and the "Lee's Process Method" provided by Tianfeng Technology Company, which represents the highest and most advanced level of technology today, the entire Linhai Technology Company is full of vitality.

Zhao Linhai was in his office, looking at a bearing made by the "Lee's process method" with great interest, and even looked very carefully with a magnifying glass.

The chief engineer of Linhai Technology Company next to him said with emotion: "Mr. Zhao, Tianfeng Technology Company is really amazing, the 'Li's process method' provided by it is very advanced, and it only took us more than a month to basically test out those vacant process parameters." ”

Zhao Linhai nodded and said: "This piece of bearing manufactured according to the Li process method, I think it is very good, insiders can find that it is much more delicate than the general bearing, immediately arrange the test and test, the test and test of this bearing into a detailed report, I want to personally send it to Mr. Li. ”

Watching his chief engineer walk out of his office with this bearing, in Zhao Linhai's heart, he was full of gratitude to Li Tianfeng, without Li Tianfeng, where would there be the vigorous vitality of Linhai Technology Company.

Leaning comfortably on his boss's chair, Zhao Linhai thought in his heart, with such advanced bearing processing technology, Linhai Technology Company is going to do a good job.

"Knock, knock, knock!"

Hearing a knock on the door, Zhao Linhai said angrily: "Please come in!" ”

Seeing the person who came in, Zhao Linhai's eyes froze, and he asked in a deep voice, "Is it you?" ”

………

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