The aero engine industry has the characteristics of high technology, high investment, high risk and high barriers. The investment in the research and development of a single engine is 10-3 billion US dollars, and the time period is 10-15 years.

Global aero engine manufacturing is mainly concentrated in companies in developed countries in Europe and the United States, with GM and Pratt & Whitney in the United States, Snæmack in France and Rolls-Royce in the United Kingdom being the world's four largest aero engine giants.

Li Tianfeng was in his office, watching the introduction of these companies on the computer, and by the way, he also had an in-depth understanding of the current pattern of the world's aviation industry, especially the world pattern of aero engines.

GE is the world's largest comprehensive power and equipment manufacturer, such as the world's most powerful single-engine thrust civil engine GE90, the most superior civil engine CF6-80C/E, the most powerful turboshaft engine CT7-8 series are all GE's masterpieces, and the widely used Boeing 737 CFM56 engine is also led by GE.

Rolls-Royce, also known as Rolls-Royce, abbreviated as RR, is a brand second only to GE in the field of turbofan engines, and an international enterprise led by the United Kingdom. Its engine market share is comparable to GE, the most famous is the RB-211 engine, the rest include the low-noise engine "Trent 1000 series" used by Boeing 787, the Trent 900 engine used by Airbus A380, the world's least noisy passenger aircraft A330/340 series used "Trent 500/700 series" are RR masterpieces, known as the world's most advanced medium helicopter AW101 RTM332 is also RR products; It has an advantage over GE.

Pratt & Whitney, referred to as Pratt & Whitney, abbreviated as PW, is a world-renowned manufacturer of military turboprop/turbofan engines, helicopter turboshaft engines and civil aviation manufacturers, and its engines are mainly military, such as F-15, F-16 One of the standard power F100 is PW, while the standard power of F-22 F119 is also PW. At present, the engine used in the world's leading 6-ton medium helicopter AW139 and the PT6C-67C currently used by China's Wuzhi-10 are both PW products, and the engine of China's most advanced regional airliner MA600 is also Pratt & Whitney technology.

Snæremark ...... in France

Li Tianfeng looked at it for a long time, and after reading these materials, Li Tianfeng thought in his heart, if you want to fight your way out, Tianfeng Technology has a place in the world aero engine market, which is very arduous, perhaps, it will take a long time.

At present, perhaps the best development strategy is based on China, and after becoming the top domestic aero engine supplier, we will further enter the international market step by step.

Just as he was sitting in his boss's chair, thinking about these things in his mind, Qiu Wenan's phone called, "Boss, it's ready." ”

"Okay, I'll come over here."

The "TFWZ001" turboshaft engine has begun the design of the core part of the engine, and the design and review of the centrifugal impeller was completed last time.

The design of the combustion chamber of the engine is extremely demanding and critical, which is related to the effective utilization of fuel, the temperature before the turbine, the output power of the engine, and even the overall performance of the aero engine.

When Li Tianfeng walked into the small conference room of the Aero Engine Design Institute, everyone was already sitting, Qiu Wen'an, Sun Xiaoping, Wu Yuhua, as well as several professor-level senior engineers, as well as relevant designers, there were many people, and everyone was patiently waiting for Li Tianfeng's arrival.

Walking into the conference room, Li Tianfeng sat down in his place, and saw that the preparations were ready, and the projector had projected the key parts of the combustion chamber - the design of the flame cylinder on the snow-white screen, Li Tianfeng waved his hand and said: "You can start, Mr. Qiu, you first talk about the design of the flame tube." ”

Qiu Wen'an was prepared and introduced: "The design of the combustion chamber of our 'TFWZ001' turboshaft engine, according to Mr. Li's design ideas, we designed a high heat load combustion chamber, and the flame cylinder adopts a multi-oblique hole divergent cooling structure design......

Whether it is the design of the combustion chamber with high heat load, or the design of the multi-oblique hole divergent cooling structure of the flame cylinder, this is a relatively cutting-edge design technology, the domestic active turboshaft engine has not yet used such technology, that is, the turboshaft C engine being produced by the E factory is the first time to use this technology, but it does not seem to be mature, the use of such a new technology, in China, Tianfeng technology is at the forefront.

The so-called multi-oblique hole divergent cooling flame cylinder structure design is to design a lot of small inclined holes on the flame cylinder, these small holes can form a cold air air mold on the surface of the flame cylinder to protect the flame cylinder, so that the flame cylinder can withstand higher temperatures, and correspondingly, the flame cylinder can also be designed to be lighter and thinner.

The multi-oblique hole divergent cooling method has been extensively studied abroad, and it is a relatively mature cooling method, which is widely used in all or part of the flame cylinder of the combustion chamber of advanced engines. This method has been used in large combustion chambers such as the Spey, RB162 and Olympus 593 in the early days, as well as in the Arriel, the third generation of TM's small engine. In addition, the flame barrel of the GE90 engine also applies the divergent cooling technology of inclined small holes, and the engine obtained the airworthiness certificate in 1996. The combustion chamber of the F414 engine adopts multi-inclined orifice cooling technology converted by IHPTET technology, which extends the life of its flame barrel by 3 times.

Since this technology has been widely used in foreign advanced aero engines, Li Tianfeng has also adopted this technology in the 'TFWZ001' turboshaft engine, what Li Tianfeng has to do is to design better, more scientific and reasonable, better cooling effect, and longer service life of the flame cylinder.

After Qiu Wenan finished speaking, Li Tianfeng said: "Let's talk about it and see if there is still room for improvement and improvement." ”

Everyone also expressed their enthusiasm, several people expressed their opinions, and two of them said well, Li Tianfeng nodded, this group of people from the aero engine design institute, the overall level is still good.

After everyone finished speaking, Li Tianfeng said: "Mr. Qiu, I think this multi-oblique hole cooling design needs to be improved like this......"

Li Tianfeng said in great detail, and after listening to it, everyone gradually understood that Li Tianfeng's design ideas completely opened a new window for everyone, as if entering a new world.

Li Tianfeng is confident that the multi-oblique hole cooling design he is talking about now is definitely very advanced, top in China, and world-class.

Although the multi-oblique hole cooling design technology has appeared for many years and is widely used in various advanced aero engines, it has been improving, has been optimizing and improving.

Several people present glanced at Li Tianfeng with admiration, but they didn't think that our Li always had such a high level of design technical attainment.

Li Tian's level is of course very high, the "TFWZ001" turboshaft engine positioning is the top in China, the world's first-class turboshaft engine, Li Tianfeng does not need to personally design, but in line with the purpose of exercising everyone and improving everyone's design level, Li Tianfeng generally only personally draws sketches, gives the basic parameters, and the specific design work is completed by Qiu Wen'an's design team.

Li Tianfeng can completely do it himself, and design these core key parts one by one, but there is no need to do this, it is enough to give a sketch, with the design sketch, plus Li Tianfeng's final checkpoint guidance, Qiu Wenan and they can't design it, so they have to find a piece of tofu to kill it.

If it is necessary to design the world's top aero engine, Li Tianfeng can do it himself, design some core key parts one by one, and even design the important parts of the entire core engine one by one, and Qiu Wenan and others will design the entire engine based on the core engine designed by Li Tianfeng.

Now, it is only the top and world-class turboshaft engine in China, and some key and important parts Li Tianfeng gave a design sketch is enough.

For example, the design of this flame tube, Li Tianfeng gave a sketch, as well as some basic parameters, the specific design was completed by Qiu Wen'an's design team, and everyone participated in the design.

Wu Yuhua is the oldest, and he is also a person who has been engaged in design work all his life, and after listening to Li Tianfeng's speech, he said with admiration: "Mr. Li, when you say this, I can understand how clumsy our design is just now." ”

Sun Xiaoping also said: "Yes, according to Mr. Li's design, the life of this flame cylinder will be increased by more than 50 at least on the original basis, the weight can be reduced by more than 20, and the thermal efficiency will also be improved a lot. ”

Everyone nodded, and Qiu Wen'an's face was also full of joy, recording the key points that Li Tianfeng just said one by one.

Qiu Wen'an: "Mr. Li, we will improve according to your ideas, after the new design drawings come out, we will review, and when the time comes, please ask Mr. Li to correct again." ”

Li Tianfeng nodded, "As far as the flame cylinder design is concerned, in addition to the multi-inclined air cooling technology, there is also a more advanced laminate cooling structure flame cylinder design, however, we will not use this technology for the time being, and when we develop more advanced aero engines, we will discuss this technology together." ”

In the future, more advanced aero engines will be developed, and when they heard this, everyone looked at each other and saw the excitement in each other's eyes.

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Today's Dragon Boat Festival, congratulations to everyone on a happy holiday!!

Today's update, Shell also wants to celebrate the festival, take a break, accompany my wife and children, and update normally tomorrow. R1152