Seeing that everyone laughed kindly, Shen Wensheng realized his gaffe and said embarrassedly: "Mr. Li, I'm sorry, I was in a hurry just now." ”

Li Tianfeng gave a "I understand" look, and then smiled slightly: "Mr. Shen, the introduction just now is really not exaggerated. ”

After a long time, Shen Wensheng nodded, "Mr. Li, can you let me take a look at your wide-string titanium alloy hollow blades and third-generation single crystal turbine blades?" ”

Li Tianfeng said: "Of course you can." ”

Liu Wei immediately left the conference room and arranged for someone to bring these two parts over quickly.

Liu Qingshan explained: "Mr. Li, this old classmate of mine used to be a technical background, and he has been a chief engineer for several years, and he is very technical. ”

Li Tianfeng said: "It is good to have a technical background, so that there is no obstacle to our communication, especially some technical problems, it will be more convenient." ”

At the same time, Li Tianfeng also knew that Shen Wensheng wanted to take a look at the titanium alloy wide-chord fan blades and his third-generation single crystal turbine blades, just to rely on his own technical level to see the extraordinaryness of these two parts.

With this, Shen Wensheng can basically determine whether this turbofan engine of Tianfeng Technology Company is a real fourth-generation turbofan engine, which shows that Shen Wensheng is also a very cautious person.

Things were quickly taken, the fan blades were relatively large, hundreds of millimeters in length, almost the width of a palm, and the monocrystalline turbine blades were much smaller.

These two things, as soon as they were placed on the table, Shen Wensheng immediately picked up the fan blades and looked at them, the fan blades looked very large, but the weight was very light, Shen Wensheng checked them. Nodding secretly, this is definitely a titanium alloy wide-chord hollow blade.

Yang Xianfeng and Liu Qingshan, who were next to them, took this small single crystal turbine blade and looked at it, and for a while, the entire conference room was very quiet.

Shen Wensheng is worthy of being a technical background, he looks very carefully, and knows the key points. After looking at it, Shen Wensheng put down the blade in his hand.

Shen Wensheng said: "Mr. Li, I visited Rolls-Royce in the UK two years ago, and I also saw their titanium alloy wide-chord hollow fan blades, and the quality of this blade is not worse than theirs. ”

Li Tianfeng nodded and said: "Our fan blades are superplastic molding and joining process, the two halves of titanium alloy blades are sandwiched with metal honeycomb welded together, and superplastic molding extrudes a complex blade shape, and finally." It also grinds blade shapes with high precision and high speed. ”

Superplastic Molding & Joining Processes!

High-precision and high-speed grinding of blades!

Suddenly, Shen Wensheng realized the extraordinaryness of this fan blade, especially the process of high-precision and high-speed grinding of the blade, as far as Shen Wensheng knew, it was definitely a domestic original, no, it may be the only one in the world. There are no other branches.

Shen Wensheng's expression was slightly excited, and he couldn't calm down in his heart.

Li Tianfeng said: "Mr. Shen." Take another look at our monocrystalline turbine blades, a true third-generation monocrystalline blade with advanced directional solidification casting technology. ”

Hearing this, Shen Wensheng picked up this small fan blade and looked at it, looking at it very attentively, while watching. While constantly exclaiming, it was obvious that Shen Wensheng saw the extraordinaryness of this small blade.

And Yang Xianfeng and Liu Qingshan picked up this fan blade and looked at it with great interest. It can be seen from the facial expressions of the two that the two are also very shocked in their hearts.

In the end, it is technology, and when you look at this blade, you can see the extraordinary features of this blade, as well as the places that are not simple.

After looking at it for a long time, everyone put down the leaves in their hands.

Shen Wensheng said: "Mr. Li, you are really not simple, it can be seen through these two blades, your turbine engine is a genuine fourth-generation aircraft, and its technical content can catch up with the American F119 engine." ”

Li Tianfeng nodded, in terms of technical content, his engine will definitely not be worse than the American F119 engine.

Yang Xianfeng also gave a thumbs up, and said with admiration: "Tianfeng, you guys are really amazing, you have developed such an advanced engine without making a sound, looking at it like this, it should have entered the stage of comprehensive trial production." ”

Li Tianfeng did not hide it, and said proudly: "It has begun to enter the stage of comprehensive trial production, and various process verifications are carried out on each part, and if the speed is fast, the first engine can be installed in the first half of next year." ”

Yang Xianfeng sighed: "This speed is really impressive!" ”

Li Tianfeng said: "Our engine is very good, the comprehensive performance is outstanding, I haven't introduced it just now, in fact, in addition to the use of wide-chord fans to improve thrust and enhance the tolerance of anti-foreign object damage; Our compressor blades are designed with three-dimensional pneumatics to improve efficiency, achieve gas-free work, reduce fuel consumption and improve exhaust temperature margin; Durable, low-emission combustion chamber that meets or exceeds the most stringent emission standards......"

There are so many advanced designs!

Shen Wensheng was a little excited: "Mr. Li, it can be seen that your turbofan engine not only has outstanding comprehensive performance, but also has low use and maintenance costs, and its emissions are lower than the most stringent standards in Europe and the United States, which is remarkable." ”

Li Tianfeng said: "How about our turbofan engine, which is installed on your Xiang-Feng regional airliner?" ”

Shen Wensheng said excitedly: "This must be very good, it's just ......"

Shen Wenan hesitated, seeing this, Li Tianfeng smiled happily, of course Li Tianfeng knew the reason for Shen Wensheng's hesitation.

Li Tianfeng said with a smile: "Mr. Shen, you are worried that our engine has too much thrust and large fuel consumption, which is not economical, right?" ”

Shen Wensheng nodded, just now, it was out of this consideration that the engine of Tianfeng Technology Company was good, but the thrust was too strong and the power was too strong.

Just like a car, the fuel consumption of a 1.5 displacement engine is much smaller than that of a 4.0 displacement engine, and an important indicator of economy is fuel consumption for civil regional airliners.

The thrust of this turbine engine of Tianfeng Technology Company reaches 18,000 ~ 23,000kg, that is, more than 50,000 pounds, while the CF34-10A engine currently used in the ARJ21 series regional airliner (Xiang-Feng regional airliner) has a single thrust of 18,000 pounds to 20,000 pounds.

Yang Xianfeng obviously also knew more about the CF34-10A engine, and said with a smile: "Tianfeng, you are too bullish, the thrust of one of your engines is the top of two CF34-10A engines." ”

Liu Qingshan also laughed happily, and in the conference room, everyone from Tianfeng Technology Company also laughed.

Li Tianfeng also smiled proudly, the thrust of his turbofan engine is really strong, and it is worthy of an engine with a thrust-to-weight ratio of 10.

The thrust of more than 50,000 pounds cannot be compared with other people's large turbofan engines for the time being, after all, people are large engines, and the thrust of large turbine engines generally reaches 8, 90,000 pounds, or even more than 100,000 pounds.

For example, Pratt & Whitney's PW4000-112 series (112-inch fan) engine, installed in the Boeing 777, has a thrust of between 84,000 and 98,000 pounds per engine.

However, it is a large turbofan engine, and our medium-sized turbofan engine is not comparable with others, nor can it be compared, but in the medium-sized turbofan engine family, Tianfeng Technology's engine is proud of its 50,000 pounds of thrust.

Li Tianfeng knew that people thought that the thrust of his engine was too big, which was a waste, but Li Tianfeng understood what Shen Wensheng meant, and immediately laughed.

Li Tianfeng said: "Blame me, I didn't make it clear when I introduced it just now, in fact, our turbofan engine uses a full digital fuel regulator, the output power can be adjusted, and the thrust can be adjusted accordingly." ”

Shen Wensheng said happily: "Mr. Li, you are really thoughtful, you can be adjusted, you can be adjusted!" ”

In fact, the output power of almost all aero engines can be adjusted, from a few tenths of a times the rated power to the maximum output power, but the turbofan engine power adjustment method of Tianfeng Technology Company is more advanced.

Li Tianfeng said: "Mr. Shen, if you think that the thrust is still large, we can tailor a turbofan engine for the ARJ21 series regional airliner, and the core part is the same as our 'TFWS001' engine." ”

Shen Wensheng hurriedly shook his head and said: "Mr. Li, in this way, if we re-develop a new engine for our ARJ21 series regional airliner, the cycle will be very long." ”

Li Tianfeng said with a smile: "It's not long, it's not long, because the core machine part has been decided, and if it is developed on this basis, it will be very fast, and basically the first verification machine can be produced in the first half of next year." ”

It's so fast!

Shen Wensheng glanced at Li Tianfeng in surprise, his eyes were full of admiration, such a development speed is definitely the fastest in China.

Since the development cycle is not long, it is tailor-made.

So, Shen Wensheng said happily: "Mr. Li, then please trouble you to tailor a turbofan engine for our ARJ21 series regional airliner." ”

Li Tianfeng readily agreed: "Okay, no problem, we will start the design work tomorrow." ”

Li Tianfeng agreed so refreshed, so relaxed, on the one hand, he is confident in his technical strength, on the other hand, the core machine part has basically been designed and finalized, with the core machine, on this basis, different models of turbofan engines can be derived, and it is not difficult.

…………………

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