Li Tianfeng is a decisive person. When he encounters problems, he doesn't like to drag it out. So, after coming out of the electronic laboratory and returning to his office, Li Tianfeng turned on the design drawings of the electronic components in his computer and looked at them seriously.

All of these electronic components were designed by Li Tianfeng himself. Now, one of them has problems and it is really difficult for others to get involved, so Li Tianfeng can only find the reason for himself.

Li Tianfeng is naturally most familiar with the principles and design structures of these electronic components and can prescribe the right medicine.

After looking at the design drawings for a long time and looking at the series of test data in the electronics laboratory just now, Li Tianfeng was able to roughly judge that there should be an error in a certain connection point of the electronic component during manufacturing.

But whether this is the case is really the case, you must contact Gu Qingguo for confirmation. So Li Tianfeng called Gu Qingguo.

Li Tianfeng said: "Hello, Mr. Gu."

Gu Qing Guodao: "Mr. Li, we have received the batch of samples, how about it?"

Gu Qingguo and others naturally conducted relevant inspections on this batch of samples, but they certainly only tested some main performance and parameters, which could not be as strict as Tianfeng Technology Company.

According to Gu Qingguo and his colleagues' testing, this batch of samples was undoubtedly qualified, so Gu Qingguo started asking so easily.

Li Tianfeng said: "Mr. Gu, you are really strong. The first batch of samples are basically qualified. There is a little problem with the two samples of only one model."

"Oh." Gu Qingguo was slightly surprised, "Mr. Li, one of the models is unqualified. What happened?"

Li Tianfeng said the situation in detail. Then he said: "Mr. Gu, I guess there was a little error in this piece during the manufacturing process. An error occurred at a certain connection point. I guess it should be the connection point No. 1257. Mr. Gu, please check if it is the same as what I estimate."

Gu Qingguo first sighed that Tianfeng Technology Company's inspection was so comprehensive and strict, and then Gu Qingguo immediately said: "Mr. Li, I will arrange for an inspection immediately. Once it is found, I will call you as soon as possible."

Li Tianfeng said: "Mr. Gu, then I'll wait for your call."

This is the electronic component used in the electronic digital control system of the turbofan 20 engine. It is not a joke, but it is naturally very rigorous.

Just now, in the electronics laboratory, there are only preliminary tests, and in the future, there will be a deeper step, stricter and more comprehensive tests.

For example, there is an electronic component that requires a million on-power tests, and there are several more. It also needs to undergo high-temperature and low-temperature tests, and there is also a kind of performance testing in a high-humidity environment, etc.

Bai Lijie and others will do these tests and tests one by one. It is estimated that this will take a relatively long process. Before these series of performance tests and performance tests are completed, the engine verification test cannot be installed.

Gu Qingguo's efficiency was really high. In the afternoon, the phone called again. Gu Qingguo said apologetically on the phone: "Mr. Li, as you estimate, there was an error on No. 1257. This is not a main functional node, and we did not detect it at the beginning."

As expected, Li Tianfeng was very happy to find the root cause of the problem and immediately said: "Mr. Gu, it's good that the problem is found. In this way, you can produce a few more samples for us immediately, and we need it urgently."

Gu Qing Guodao: "Mr. Li, you don't need to say that, we will produce a few samples as soon as possible and send them to you as soon as possible."

Li Tianfeng said: "Mr. Gu, then I'll trouble you."

………

During this period, Tianfeng Technology Company's scientific research and production have been steadily progressing, and the design of the turbofan 20 engine has entered the final finishing work. The design of the turbofan 16b engine has also progressed very quickly. Li Tianfeng personally inspected the design situation.

Li Tianfeng did not intervene in the specific design of the turbofan 16b, but during the design process, Li Tianfeng will definitely take a look. If a problem is found, it will definitely correct it.

However, the design team led by Sun Xiaoping performed well, even Li Tianfeng was quite satisfied with the design of the turbofan 16b.

After the design of the turbofan 16b engine is completed, Li Tianfeng will definitely take a look at it again and do the final check. If there is no problem, it will be a trial production of relevant parts, then the installation and the engine verification and test drive.

The design of the turbofan 16b engine has made good progress. The development of the turbofan 20 engine has completed the trial production and test of the first batch of parts.

The first thing to complete the trial production and test was the high-pressure turbine blades of the turbofan 20. The finished products of several blades had been sent to Li Tianfeng's desk, and there was also a test report on the blades.

The high-pressure turbine blades of the turbofan 20 engine are highly similar in shape to the high-pressure turbine blades of the turbofan 16 engine, but the size is a little smaller.

The third generation single crystal blades, directional solidification molding technology, hollow blades, and black-brown coatings, which are thermal barrier coatings.

The leaves are not big, but they are very delicate. You can tell at a glance that this is a fine product. Li Tianfeng took out a 5x magnifying glass from his desk drawer with his white gloves, looked carefully and carefully.

Under the magnifying glass, it became clearer that Li Tianfeng first looked at the hundreds of tiny cooling vents on the leaves.

Many pores are only the size of hair and are neat and neat. The largest cooling pores have a hole diameter of not more than one millimeter. Although these cooling pores are very small, they are powerful and cannot make any mistakes.

The turbofan 20 engine has a temperature of 2100k in front of the turbine. At such a high temperature, ordinary steel has melted, while the turbine disc and turbine blades have to work in such a high-temperature environment, output powerful power and withstand huge stress.

We know that when the temperature rises, the metal will soften. Once it softens, the strength of its metal will be greatly reduced, which is absolutely not allowed to appear on aircraft engines.

The parts cannot be softened. What should I do in such a high-temperature environment? Therefore, many methods have been taken in the design. Thermal barrier coating is one method, and another important method is the design of hollow blades.

The blades are hollow and a large number of cooling pores are added. The cooling airflow will form a protective gas film on the surface of the blades, isolating the hot gas from the blades, so that the turbine blades can work safely in this high-temperature environment.

However, the cooling air holes are very small. If the design is improper or there is a problem with the manufacturing, these tiny air holes are prone to carbon accumulation and blockage. Once it is blocked, the cooling air film will weaken or fail, which is very dangerous.

All, the design of hollow turbine blades is a technical job, and processing and manufacturing are also very important. Li Tianfeng knows that there will definitely be no problems in the design of high-pressure turbine blades of the turbofan 20 engine. This has been verified by the turbofan 16 engine. What we need to look at now is the processing quality of these cooling pores.

Li Tianfeng held a magnifying glass and looked at the pores carefully. Li Tianfeng found that these pores were processed very beautifully, with no burrs in each hole, and the apertures were also round, without any irregularities.

"It's well processed." After reading it, Li Tianfeng picked up the inspection and test report of the high-pressure turbine blades, and looked carefully.

All the measurement data of the blades are qualified, but many are still moderately poor, stress tests, fatigue tests, high temperature tests, low cycle tests, and a series of tests are also qualified.

After reading these, Li Tianfeng thought to himself that this is a good start and finally completed the trial production of the first batch of parts beautifully and smoothly.

It happened that Liu Wei sent a few documents to Li Tianfeng to sign. When Liu Wei saw the leaves on Li Tianfeng's desk, Liu Wei couldn't help but say, "Boss, these leaves are so beautiful and exquisite. Which of our engines is the turbine blade."

Liu Wei can still distinguish whether it is a turbine blade. After all, there is a big difference between a turbine blade and a compressor blade, but Liu Wei really doesn't know which level of turbine blade it is and which engine it belongs to.

Li Tianfeng smiled and said happily: "Mr. Liu, this is the high-pressure turbine blade of our turbofan 20 engine."

Liu Wei said in surprise: "Boss, has the high-pressure turbine blades of the turbofan 20 engine been successfully tested?"

Li Tianfeng said: "The trial production of the first batch of blades has been completed. In a few days, it is estimated that the remaining turbine blades, even our turbine discs at various levels, will complete the first batch of trial production one after another."

Liu Wei said: "Boss, the development of our turbofan 20 engine is progressing so quickly."

Li Tianfeng nodded and said, "Mr. Liu, this time our turbofan 20 engine is progressing so smoothly, and everyone has made great contributions. In this way, your administrative department will take the lead and come up with a reward plan. For those who have performed well in the development of this engine, I will give a heavy reward!"

Rewards!

Liu Wei looked happy and said, "Boss, what is the approximate reward amount?"

Li Tianfeng thought for a moment and said, "After selecting 10 meritorious figures, each person will be rewarded with 500,000 yuan in cash; 20 outstanding figures, each person will be rewarded with 300,000 yuan in cash; 50 outstanding figures, each person will be rewarded with 100,000 yuan in cash."

Ah! This is a big prize!

...

The third update is today, and the second update is given.

On the first day of work, there were so many things. Two meetings were held in the morning. I could only do whatever I wanted to do and seize every opportunity. As soon as the meeting ended, the first thing was to do was to quickly write, race against time, because today I would like to update three times.

(To be continued)
Chapter completed!