Seeing that Zhao, the elder of the dynamic balancing class, said this, Lao Yan gradually turned on a positive face, and did not leave, and personally watched the dynamic balance test of the fan rotor on the side.

As soon as the machine is ready, including the alignment of the fan rotor, the dynamic balancing machine starts to start, the fan rotor begins to rotate gradually, and the speed gradually increases, it can be seen from the LCD screen of the dynamic balancing machine that the speed of the fan rotor has been increasing, until it reaches the set speed of 200 rpm.

"Wow, it's so windy!"

One of the relatively young dynamic balancers shouted in surprise, in the work of the engine, the fan rotor will rotate at high speed, the speed reaches tens of thousands of revolutions, generating a huge thrust, and now it is only 200 rpm, it has already produced a large air flow, almost blowing up.

A relatively older dynamic balancer next to him smiled, "This is a fan rotor, and it uses titanium alloy wide-chord fan blades, I heard that the aerodynamic performance is excellent, and it can naturally produce strong winds." ”

At this moment, with the smooth rotation of the fan rotor, the dynamic unbalance has come out, and the number jù is displayed as 0.56g/cm, and the qualified requirement must be less than 0.50g/cm.

Squad leader Zhao was also paying attention to the dynamic balance, and when he saw this number, he immediately said: "Lao Yan, the dynamic balance is unqualified, and it is a little out of tolerance." ”

Squad Leader Yan took a look and found that he was really unqualified, so he couldn't help but shake his head gently, it seems that the hope of passing at one time is in vain.

Squad leader Yan said: "Lao Zhao, mark the unbalanced position for me, let's reassemble it again, and then come to the dynamic balance test." ”

Squad Leader Zhao nodded, and the balancing machine stopped. The fan rotor stopped rotating, and squad leader Zhao took a blue marker pen to mark the unbalanced position.

The fan rotor is being pushed from the dynamic balance area to the fan rotor assembly area, Yan squad leader frowned and looked at the fan rotor for a long time, and was about to call the technician to come down to deal with it, Li Tianfeng and Zeng Qinghai happened to come to the fan rotor assembly area.

Seeing the mark drawn by the blue marker pen on the fan rotor, Li Tianfeng asked, "Master Yan." Unqualified dynamic balancing? ”

Squad leader Yan said: "Mr. Li, the dynamic balance is a little out of balance. ”

Li Tianfeng looked at the fan rotor seriously, and then said: "The No. 12 blade is a little heavier, choose a blade that weighs about two grams and replace it, there should be no problem." ”

Squad leader Yan was overjoyed in his heart, knowing that Li Tianfeng had a deep technical attainment, since he said so, it must be right, so. Squad leader Yan personally replaced the No. 12 blade and chose a blade with a light weight of about two grams and replaced it.

Moving the balance again, and sure enough, it was within the qualified range, and Squad Leader Yan said happily: "Mr. Li, you are really amazing." ”

Li Tianfeng said with a smile: "It's not that I'm good, but the processing quality of our parts is good, otherwise, the dynamic unbalance is definitely more than a slight superdifference like this." If it's too far off, replacing a blade may not be enough. ”

That's true. If it is too far away, the entire fan blade has to be reweighted and pushed over, and the workload will be very large.

With just one blade replaced, the dynamic balance is fully qualified, which means that the fan rotor fully meets the quality requirements. Final assembly is possible. Squad leader Yan waited for a while.

Of course, just now a blade was replaced, the relevant procedures must be handled, and the relevant records must also be indicated, aero engine research and development. There are almost strict requirements to the extreme, no relevant procedures are not handled, blade replacement is absolutely not allowed, and these related procedures and records (such as temporary process regulations, unqualified records, assembly records, etc.) must be entered into the engine resume.

The first engine of the "TFWS001" turbofan engine has fully entered the final assembly, and Li Tianfeng is naturally very concerned about it, and he also pays attention to it.

The assembly of various components, such as fan rotors, compressor rotors, combustion chambers, turbine parts, etc., took about two to three days.

It took such a long time, on the one hand, because this is a new engine, many people are in contact with it for the first time, and in addition, everyone feels that it is the first engine, and it is absolutely impossible to travel cuò, adhering to the principle of slow work and meticulous work, excellence, and strict requirements for quality.

After looking at it for two or three days, Li Tianfeng knew it in his heart and was very satisfied, and the assembly quality of each component was very good in Li Tianfeng's opinion. Especially in the combustion chamber assembly area, Li Tianfeng was very pleased to see the professionalism of several assembly workers.

It all started the day before yesterday.

After Li Tianfeng watched the assembly of the fan, the assembly of the compressor, and the assembly of the turbine, he and Zeng Qinghai walked to the assembly area of the combustion chamber and saw several workers assembling the first combustion chamber.

Li Tianfeng knew that after the flame cylinder was installed on the burner casing, there was a runout requirement for the inner circle of the flame cylinder and the combustion chamber casing, and the design requirement was 5 wires.

Li Tianfeng is not only very clear and familiar with these technical requirements, but also has very good eyesight, and it can be seen that the result of these workers hitting the table is beating 4 wires, which logically means that beating 4 wires belongs to the qualified range.

However, to Li Tianfeng's surprise, these assembly workers were not satisfied with the result of 4 wires, but stopped typing, adjusted the assembly, readjusted, and then checked the table, showing that the runout was 1 and a half wires.

Seeing this, Li Tianfeng is very pleased, after so many years of strict technical management, the workers will finally keep in mind the spirit of excellence, strive for perfection, if this spirit then form a corporate culture, deep into the heart of every worker, it will be amazing.

With such a spirit, why worry about not developing the world's top aero engine!

Design is very important, the quality of the engine parts processing, the assembly quality is also very important, the workers have this spirit, don't think about it, the processed parts, the assembled engine, the quality must be first-class.

……

Final assembly area for turbofan engines of the TFWS001 type.

Obviously, because it is the first engine, the assembly workshop has selected elite soldiers, several assembly workers are skilled, with tacit understanding, and there are two technicians next to it to guide.

The combustion chamber casing is first installed with the assembly bench, and after the workers align the central axis datum and the end face datum of the combustion chamber, the compressor is installed on the combustion chamber, and between the two, it is positioned through the guò precision positioning hole.

Install the compressor part, and it is a strict inspection, coaxiality, runout and other technical requirements do not fall, if unqualified, it must be adjusted.

"A little bit here, yes, a little lighter!"

One worker looked at the dial gauge, and the other worker held a rubber hammer to gently knock on the compressor casing, adjust the assembly, and ensure the assembly technical requirements, such as the coaxiality with the combustion casing, the beating of the compressor itself, and so on.

On the first day, the assembly of the combustion chamber, compressor, and fan part is completed, and the three are assembled together, including the fan casing on the outside of the fan rotor.

On the second day, it was flipped 180 degrees to assemble turbines, tail sprays and other components, and on the third day, various accessories were installed, including control parts, various electronic components, various lines and pipelines, etc.

For the first "TFWS001" turbofan engine, it took almost three days to assemble the components, three days to assemble the engine, and almost a week to complete the final assembly.

Such a slow speed, on the one hand, is to ensure high-quality assembly quality, on the other hand, considering that the first engine, some assembly workers are not familiar with it, and specially slow down the assembly progress.

When the engine is assembled, Li Tianfeng is naturally in the assembly area of the assembly workshop.

Seeing that the engine had finally completed the final assembly and the engine was in front of him, Li Tianfeng was very happy, of course, there were still many people around the engine at this time.

The completion of the final assembly of the first engine is definitely a thing worth celebrating for the entire Tianfeng Technology Company, and it is definitely a milestone in the development process of the "TFWS001" turbofan engine.

"Boss, the engine has completed the final assembly smoothly, and I am really happy to look at it!"

"The engine is so beautiful, look at this fan, look at this compressor, the appearance is so beautiful."

“……”

Everyone gathered around this first engine, their faces were full of joy, and they were very happy, Li Tianfeng was also in a good mood, and after looking at this engine, he said: "Organize a pre-test review, and then organize the test run of our first engine." ”

"Boss, I'll be in charge of the pre-test review." Sun Xiaoping took the initiative to ask.

Li Tianfeng nodded in agreement, and then said: "After the first verification test is completed, we will also apply for the design finalization of this engine." ”

Xu Lilong took the initiative to say: "Boss, I am personally responsible for applying for the finalization of the design." ”

Li Tianfeng knew that Xu Lilong had acquaintances in the Bureau of Science, Technology and Industry for National Defense, so he also nodded, "The matter of applying for design finalization will be handed over to Mr. Xu." ”

Liu Wei looked at the engine and was very happy, "Boss, can I take a photo with this engine?" ”

After Li Tianfeng thought about it, he said happily: "Come, everyone comes together, let's take a family photo." ”

So, everyone came over, the engine was in the center, everyone was like the stars and the moon, Li Tianfeng was standing next to the big engine, a group photo was taken, the background of the photo is the modern assembly plant of the assembly workshop.

In the digital camera, Li Tianfeng looked at the photo with satisfaction, and then said to Liu Wei: "Mr. Liu, send one copy of this photo to each person."

This is a photo of the entire R&D and manufacturing team of Tianfeng Technology Company, which not only has senior managers, but also main designers and process personnel, including Liu Wei, and the director and deputy director of the assembly workshop.

…………

Continue the three more today, and the first one will be sent! (To be continued......)