Hearing this, Li Tianfeng's heart was very happy, if he really came to order an engine, Li Tianfeng completely raised his hands to welcome it, and warmly welcomed it.

Previously, Embraer ordered 100 turbofan 16 engines and 200 turbofan 17 engines from Tianfeng Technology, with a total contract value of nearly $1.5 billion!

Now, with the mass production of turbofan 16 engines and turbofan 17 engines, most of the deliveries of these two engines have been completed, especially the turbofan 16 engine, which will soon reach 100 units.

Li Tianfeng said: "Mr. Xu, I estimate that the purpose of Marcel Duo coming to our company is to order engines, keep in touch with the other party, and deploy the reception work." ”

Xu Lilong said: "Boss, don't worry, I will handle these things properly." ”

"Hmm." Li Tianfeng nodded, "Mr. Xu, my recent energy is mainly on the development of the turbofan 20 engine, and the company's daily affairs, you have to worry a little more." ”

Xu Lilong said: "Boss, don't worry, the company's daily affairs will be handed over to me, the development of the turbofan 20 engine, but our top priority at present." ”

As the vice president of Tianfeng Technology Company, Xu Lilong naturally knows that the development of the turbofan 20 engine is very important, which is the development task issued by the military, and there can be no sloppiness and mistakes.

Li Tianfeng nodded.

After the report, Xu Lilong got up and said goodbye and left Li Tianfeng's office, while Li Tianfeng continued to write the design and technical outline of the turbofan 20 engine.

Turbofan 20 engine, twin-rotor small bypass ratio afterburner turbofan engine, digital electronic system control, using turbofan 16 engine core engine technology. The maximum thrust of the engine is 15000 kg, the engine weight is less than 1350 kg, and the thrust-to-weight ratio is 11......

Li Tianfeng wrote down the performance and parameters of the engine he envisioned one by one, and then carefully scrutinized it, and then confirmed the structure of the engine, as well as the areas that need to be improved on the basis of the core engine technology of the turbofan 16 engine.

The fan definitely needs to be improved. The previous one-stage fan was changed to a three-stage fan, the fan casing was increased with guide vanes, the compressor was changed to six stages, the high-pressure turbine was changed to one stage, the low-pressure turbine was two-stage, the channel ratio was 0.30, and the total pressure ratio was 35

The core engine technology adopts the turbofan 16 engine core machine, but because it is a military small-channel ratio turbofan engine, it is completely different from the civilian large-channel ratio engine. Li Tianfeng knows that there are many things that need to be changed and improved.

The fan has been changed from one to three stages, the size of the fan has been greatly reduced, and the length of the fan blades has also been greatly reduced, but it must still be a wide-chord fan blade, and the advanced technology of the original turbofan 16 engine can be retained as much as possible, such as wide-chord fan blades. Ultra-cold single crystal turbine blades, ceramic matrix composite combustion chamber. Titanium matrix composite integral leaf ring and other technologies.

The thrust-to-weight ratio given by the military is 10, and Li Tianfeng is ready to increase it slightly to increase the thrust-to-weight ratio of the engine to 11, in addition, the number of parts of the engine is reduced as much as possible, and the manufacturing process must be further enhanced.

Because it is the power of the fighter. It is necessary to consider the craftsmanship, and in the event of war, it can be quickly mass-produced and supplied to the troops, even if it is a time of peace, but such a design concept must not be abandoned.

Half a month. Li Tianfeng rarely goes to the production site, and spends more time in his office to personally get the design and technical outline of the turbofan 20 engine.

………

Canada, Bombardier Inc.

This is a professional test site belonging to Bombardier, and at the airport, a regional airliner is parked on the runway, apparently ready to take off.

It is not very far from the runway, and there are a lot of foreigners standing, looking at the appearance of these foreigners, there should be a few of them are middle and senior managers of Bombardier, and not far from these foreigners, there are several people wearing Tianfeng Technology Co., Ltd. work clothes.

One of them is named Peng Jiangtao, who used to be an engineer at a state-owned machinery factory in CS City and one of the first technicians to join Tianfeng Technology.

Now Peng Jiangtao is one of the technical leaders of Tianfeng Technology's Canadian office, and Peng Jiangtao is communicating with several of his subordinates.

Peng Jiangtao said: "Xiao Wang, how is the engine inspection?" ”

Xiao Wang said lightly: "Head, the engine has been checked, everything is normal, and the test flight can be carried out." ”

Peng Jiangtao said to another person next to him: "Xiao Zhao, your duty is to make all the records of the engine test flight." ”

Xiao Zhao next to him nodded, holding a laptop in his hand, and at the same time, looked at the regional airliner that was about to fly in the distance.

This aircraft, equipped with two turbofan 17 engines, is ready for the first test flight, which is also the first cooperation between Bombardier and Tianfeng Technology, if it were not for its competitor Embraer has purchased a lot of engines produced by Tianfeng Technology, Bombardier will not have such cooperation with Tianfeng Technology, and even enter the test flight of the engine.

Among these foreigners who watched the test flight, the most conspicuous was a pot-bellied foreigner in the center, and the others were like stars and moons, and this big-bellied foreigner should be one of the executives of Bombardier.

Next to the fat foreigner, a tall man looked at the plane in the distance and said, "BOSS, whether the engine of Tianfeng Technology Company works or not, I have always been worried." ”

Someone next to him immediately chimed in: "Yes, we still know the strength of China's aviation industry, is this engine of theirs really as good as they advertised?" ”

"Yes, they say that this is the fourth-generation turbofan engine, ultra-low fuel consumption, ultra-low noise, ultra-low emissions, I really have a little doubt."

Beside him, there were a lot of doubts, and the fat foreigner looked at the plane that was about to take a test flight in the distance, and said slowly: "Gentlemen, whether the engine of Tianfeng Technology Company will work or not, wait a minute, we only need to conduct a test flight, and we can basically see the performance of these two engines." ”

For the test flight, the aircraft, which was equipped with two turbofan 17s, was specially equipped with a lot of monitoring systems, such as noise monitoring, vibration monitoring and so on.

A person in charge of the test flight trotted over and reported: "BOSS, everything is ready, you can start the test flight immediately." ”

The fat foreigner nodded, looked at the blue sky, and said, "Start the test flight!" ”

The test flight order was soon issued, and the crew members who had been on standby in the plane for a long time received the order and began to start the engine.

The instrumentation is normal, the parameters are normal, and it can take off. The crew reported everything to the command station.

"You can take off!"

The engine moved slowly, the sound of the engine came, everyone's eyes were attracted by this plane, not only the people of Tianfeng Technology Company looked at the plane that began to taxi slightly nervously, but also the people on the side of Bombardier, everyone also looked at this plane.

Hearing the sound from the engine, one of the foreigners said: "BOSS, the sound of the engine is very small, a little unexpected to me." ”

Another person next to him said: "This is normal, because the plane has just started and the engine is at its minimum power, so the sound is naturally very small." ”

The fat foreigner nodded, and he thought so in his heart, the plane had just started, and it was in a state of minimum power, and the sound was not loud, maybe normal.

After a certain distance, the plane began to accelerate, and the power of the engine gradually increased, climbing from the minimum power state to the maximum power state.

The planes were getting faster and faster, and the engines were getting louder, but to Bombardier's surprise, the engines weren't as loud as they thought, at least quieter than they had been during previous test flights.

The foreigner who said that he didn't make a lot of noise just now obviously noticed this, so he said: "BOSS, listen, the sound of the engine is really not loud, and it is obviously a little quieter than the engine sound of GE and Pratt & Whitney." ”

The fat foreigner nodded, apparently noticing this as well.

The plane is in everyone's eyes, the speed is getting faster and faster, Tianfeng Technology Company everyone, watching the plane smoothly into the acceleration state, the heart is both happy and nervous, happy that the engine performance is good, and they expected exactly the same, nervous is that the plane is about to take off in front of the eyes, the engine reaches the maximum power state, at this time, the most prone to problems.

Peng Jiangtao, as one of the technical leaders of Tianfeng Technology's Canadian office, saw that the speed of the plane had been increasing, and he was slightly nervous in his heart, and even shouted in his heart, take off, take off, take off immediately.

Next to him, everyone on the side of Tianfeng Technology Company was also chasing the plane that was getting faster and faster, and one of them shouted: "Take off, it's about to take off!" ”

It was seen that the plane was about to take off, but at this juncture, the plane actually began to slow down, and then taxied all the way, stopping at the other end of the runway, and some distance further, the plane could rush out of the runway.

How so?

Could it be that something is wrong?

The faces of the people of Tianfeng Technology Company changed greatly, while the people of Bombardier looked at each other, and even many people looked at the people of Tianfeng Technology Company.

…………

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