Two assembly workers, install the front and rear journals of the compressor rotor, place the rotor on the inspection platform, and use two V-shaped iron to support the front and rear journals of the rotor.

Li Tianfeng, Sun Xiaoping, Zeng Qinghai and others stood next to them, watching the inspection of these two workers, Sun Xiaoping even said: "The beating of the compressor rotor is extremely strict, and it is very important to the performance of the compressor, and this technical condition must be strictly guaranteed." ”

The two workers, carefully checking the runout of the rotor with a dial gauge, first the first stage impeller disc, then the second stage, then the third stage......

There are six levels in total, the beating of the first stage impeller disc is very good, about five thousandths, that is, half a filament, the second stage is slightly worse, more than a trace, the third stage is even worse, almost a trace and a half, the further back, the worse the runout, to the sixth stage of the impeller disc, the runout is almost four wires.

The design requires that the runout of the impeller disc at all levels shall not be greater than two wires!

The two workers, seeing Li Tianfeng and others on the side, were obviously nervous, because the beating of the compressor rotor was unqualified.

One of the workers, seeing that Xiao Liang, the technician in charge, was not far away, immediately beckoned: "Liang Gong, come here, there is a problem here." ”

Liang Gong, who was in charge of the process, came over immediately, and after greeting Li Tianfeng and the others, Liang Gong asked, "Master Meng, what's the problem?" ”

Master Meng, an assembly worker, explained the situation again, and gave the measurement results just now to Liang Gong, and added: "Liang Gong, one to six impeller discs, we have checked the runout and related technical conditions, and even the assembly dimensions have been carefully checked, all of them are qualified parts, how can the rotor be assembled as a whole, this runout change is so big?" ”

Liang Gong pondered.

Li Tianfeng couldn't help but smile slightly, and nodded lightly with Zeng Qinghai. Of course, the two of them knew that all the parts were qualified, and why this happened when they were assembled.

This is also a problem that Li Tianfeng is more concerned about, Li Tianfeng wants to see how the following process technicians solve this problem.

Zeng Qinghai is the head of the process technology department of Tianfeng Technology Co., Ltd. and the boss of all process technicians. Such as this Liang Gong, he can also be regarded as Zeng Qinghai's subordinate.

Zeng Qinghai said: "Xiaoliang, how is it?" See why? ”

After Liang Gong thought about it, he suddenly said loudly: "Minister Zeng, I know, this is a cumulative error, yes, it is a cumulative error, the beating of each stage of the impeller disc." As you accumulate backwards step by step, the beating gets bigger and bigger. ”

Zeng Qinghai said: "Xiao Liang, now that you know the reason, what to do next, are you clear?" ”

Liang Gong said: "Got it, no problem!" ”

Li Tianfeng said: "Xiaoliang, yes, since you know how to do it." We're not going to teach you anymore, Minister Zeng. Let's go over there and have a look. ”

Zeng Qinghai gently patted Liang Gong's shoulder, and then everyone went to the fan assembly area not far away.

In the assembly workshop, Li Tianfeng carefully watched the assembly of various parts of the turbofan 21 engine, such as the compressor. Fans, combustion chambers, turbines and much more.

Once these components are assembled, the next step is the final assembly of the turbofan 21 engine, and we will see how this progresses. It is estimated that the turbofan 21 engine will be ready for final assembly in two or three days.

It is worth mentioning that Li Tianfeng and others, after watching the assembly of fans, combustion chambers, turbines, accessories, etc., in the assembly workshop, turned back to the compressor assembly area again.

When we came here again, the compressor rotor of the turbofan 21 engine had been reassembled, and the high and low points of the impeller disc beating were staggered with each other, and there was no longer a cumulative error.

Three days later.

The first turbofan 21 engine was assembled in the assembly workshop of Tianfeng Technology Company, and Li Tianfeng, Sun Xiaoping, Zeng Qinghai and others often appeared in the assembly workshop during the final assembly of the engine.

The final assembly was carried out for two days, and the turbofan 21 engine was successfully assembled.

Today, the assembly workshop can be lively and full of festivity!

The first turbofan 21 engine that completed the final assembly was very beautiful and exquisite, and it was draped in red silk, Li Tianfeng was in the center, the senior management of Tianfeng Technology Company, and some of the main design and process personnel, everyone took a group photo next to the engine.

"Click!"

This photo was taken, and it can be seen from the photo that this turbofan 21 engine is in the center, dressed in red silk, surrounded by people from Tianfeng Technology Company!

"Boss, our first prototype has finally completed the final assembly!"

"I'm so happy, today is a day to celebrate"

Li Tianfeng saw that everyone was so happy, and he also waved his hand happily and said loudly: "Today's day is destined to be recorded in the development history of our Tianfeng Technology Company, and today will be an important milestone day." ”

The turbofan 21 engine, the first engine completed the final assembly, as the world's best and most advanced civil regional airliner engine, such a day, is of great significance.

After the group photo, when everyone was happy, everyone faintly heard the sound of a salute outside.

At the gate of Tianfeng Technology Company, the salute shook the sky, the colorful flags fluttered, and the festive banner was pulled up, which read, "Warmly celebrate the first prototype of the turbofan 21 engine off the assembly line".

On Songzhou Avenue next to it, there is a lot of traffic, with the development of Tianfeng Technology Company, this area is obviously lively and prosperous, no, the entire Songzhou City is much more prosperous than a few years ago.

The movement of Tianfeng Technology Company quickly attracted a large number of people, and even, the people who drove by specially slowed down their speed and looked at Tianfeng Technology Company.

"The turbofan 21 engine, this engine, I know, is the most advanced civilian regional airliner power in the world."

"So soon, the first prototype of the turbofan 21 engine has been assembled and rolled off the assembly line."

"Great news, this is simply my Great Song Prefecture, no, this is the pride of all the people!"

“……”

The people who saw this scene were all full of joy on their faces, as if they had encountered a big event, and even, Songzhou Avenue gradually became blocked, because everyone was watching Chaotianfeng Technology Company, and the speed was very slow.

The first prototype of the turbofan 21 engine was assembled, which was reported on the official website of Tianfeng Technology Company on the same day.

The color picture of the real engine of the turbofan 21 engine appeared on the official website of Tianfeng Technology Company, which used to be a 3D color picture, and now the real color picture is more beautiful, more exquisite, and more eye-catching.

At the same time, Tianfeng Technology Co., Ltd. held a press conference three days later to officially announce that the first prototype of the turbofan 21 engine was successfully assembled.

With the release of the news on the official website of Tianfeng Technology Company, many people soon knew about this happy event, and there was a heated discussion at home and abroad.

Many domestic websites, especially those aviation websites or military websites, are full of pictures and texts to report the good news with enthusiasm.

"That's awesome! The assembly of the first prototype was completed so quickly! ”

"Since then, we have had the world's most advanced civil regional airliner engine in our country!"

"Whoever says that our domestic aviation industry is worse than that of Western countries, I will be in a hurry with whom!"

“……”

This is the case at home, and internationally, especially those well-known aviation industry magazines, periodicals, websites, etc. have also been reported.

Companies such as Airbus, Boeing, and Bombardier sent congratulatory messages with festive wording, and at the same time, the executives of these companies began to prepare for the departure of Songzhou City to participate in the press conference held by Tianfeng Technology Company for the turbofan 21 engine.

Guo Tongde's mood seems to be happier than anyone else, and he is a little happier than he is the secretary of the listing committee, because Li Tianfeng is interesting enough, and the press conference of the turbofan 21 engine was held at the state-guest hotel.

The State Guest Hotel is dressed in festive costumes.

Ling Yingjun, the general manager of the State Guest Hotel, was even more busy, and the fat figure appeared here in the hotel at once, and there were people who commanded themselves, busy with this and that.

The press conference not only invited hundreds of domestic and international aviation industry people, but also invited a lot of reporters from Chinese and foreign media, including many well-known international media.

Liu Wei and several of her subordinates are also busy at the State Guest Hotel, and some guests and reporters have begun to arrive at the State Guest Hotel.

A luxury bus slowly parked at the gate of the State Guest Hotel, the door opened, and two staff members of Tianfeng Technology Company led a large group of people down, these people, with different skin colors, were the guests and reporters attending the press conference.

There are several such luxury buses, which go to and from Huangping Airport to welcome guests and reporters who come to attend the press conference of the turbofan 21 engine.

Liu Wei is very busy, but she is very happy and happy.

In addition to the luxury bus that picked up people, a truck slowly drove to the entrance of the lobby of the State Guest Hotel, and the security guard of the State Guest Hotel was about to stop the truck and let the truck leave quickly, but when they saw several people wearing Tianfeng Technology Company's work clothes jumping out of the car, these security guards immediately had no intention of stepping forward to stop.

On the truck, a big guy, covered with red silk cloth, can't see what this is for the time being, these staff members of Tianfeng Technology Company, using the truck crane on the truck, carefully hoisted the big guy from the car.

Then, everyone carefully pushed this thing, slowly entered the hall, and then entered the special freight elevator, it turned out that this thing was still on wheels, and it was easy to push away.

The security guards around, as well as the staff of the state-guest hotel, everyone saw this thing, and they all wondered what it was, so mysterious and mysterious, and it was covered with red silk cloth.

…………

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