Speaking of the mission of using aircraft engines, here is a small popular science. Generally speaking, aircraft engines can have three overhauls. After the new aircraft is installed on the aircraft and used for a specified time, or after the specified period is reached, it needs to return to the aircraft engine manufacturer for overhaul.

This is the first overhaul. After the overhaul is completed, it will be inspected and tested by the factory and meet the requirements and the engine will be qualified. This engine can be installed on the engine again after the specified time, or after the specified period, it will return to the aircraft engine manufacturer for the second major repair.

After the second overhaul, there will be a third overhaul. Generally speaking, an aircraft engine can be overhauled three times. Of course, there may be uninterrupted service failures in the middle, which has no impact on the engine service life, so I won’t mention these.

Take the turboshaft engine of factory e for example. The service life of the first overhaul period is now tentatively set to be 500 hours. In other words, if a new turboshaft engine is left factory and has a cumulative use of the aircraft for 500 hours, it will have to return to factory e for the first overhaul.

500 hours is relatively short. Li Tianfeng estimated that his turbo shaft would definitely be more than 500 hours.

In the assembly workshop.

This engine is being assembled in a total of the time. These assembly workers are skilled in the process of assembling and disassembling this engine many times before. Everyone is very familiar with this engine and the assembly progresses relatively quickly.

Li Tianfeng was watching the workers' assembly, Qiu Wen'an was also there, and Zhou Wensheng, director of the assembly workshop, was also there.

Seeing that several of his assembly workers were skilled, Zhou Wensheng felt very proud of his face and was also good in his heart. He asked actively: "Boss. This engine is used for life test drive. How long does this engine have to be for the first overhaul of our engine?"

Li Tianfeng has just agreed with Qiu Wen'an and has not announced it to the public yet. However, everyone must know this matter, so Li Tianfeng has no intention of hiding it. Li Tianfeng said: "Our turboshaft D engine has a tentative lifespan of 2,000 hours for the first overhaul."

The life span of the first overhaul is also called the first-turn life span. For a new engine, in China, it is generally set to be 300 hours or 500 hours, and there are few 1,000 hours, while the first-turn life span of the turbo shaft d is 2,000 hours.

Upon hearing this, Zhou Wensheng was slightly surprised. You should know that Zhou Wensheng is an insider in the industry. Before joining Tianfeng Technology Company, Zhou Wensheng had 10 or 20 years of work experience in a large domestic aviation company.

Zhou Wensheng said: "Boss, the first life span is set at 2,000 hours for the first time, which is almost a new record in China. As far as I know, the first life span of the turboshaft engine of the e factory is only 500 hours."

Before Li Tianfeng could speak, Qiu Wenan, who had always disliked words, said proudly: "Director Zhou, the 2,000-hour first-round period. This is the boss's conservative estimate. According to my opinion, there is no problem with our engine's 3,000-hour first-round period."

What! 3000 hours!

Upon hearing this, Zhou Wensheng looked at Li Tianfeng with a little shocked look, his face full of incredible expressions, and he thought to himself. Oh my God, 3,000 hours. This is definitely a precedent in China and set a new record.

Li Tianfeng nodded. "After the final assembly of this engine is completed, it will enter a 2,000-hour life test drive. If the 2,000-hour life test drive is completed, the engine will be normal, and it can be added to another 1,000 hours. In this way, it will be a 3,000-hour life test drive."

It turned out that it was really possible that it was 3,000 hours. The 2,000 hours just now were only temporary, Zhou Wensheng thought happily.

Zhou Wensheng, who knew the importance of the service life of an aircraft engine, was slightly excited. Looking at the engine being assembled, his eyes almost shining, as if he had seen a peerless treasure.

The first turnover period is 2,000 hours, and in the future, it may still be 3,000 hours. For such an engine, it is calculated based on the first turnover period of 2,000 hours. The total life of an engine is 8,000 hours, and one engine can support several other engines.

Zhou Wensheng said: "Boss, in this way, we can match several others with one unit. The price of this engine is...

In Zhou Wensheng's mind, an astronomical number appeared, and he felt a burst of excitement in his heart.

Li Tianfeng nodded and said, "For such an engine, it costs at least 2, 30 million yuan."

Two, 30 million!!!

Zhou Wensheng looked at Li Tianfeng excitedly and thought to himself, the boss is so awesome, one is two or three million, how many ten engines are there, and what about one hundred?

Zhou Wensheng found that his head had a short circuit at this moment, and some of it was unreasonable.

When Li Tianfeng saw Zhou Wensheng's expression, he couldn't help but smile. Li Tianfeng was still relatively conservative at this price. Li Tianfeng had already inquired about it. The price of e-plane turboshaft engine is more than 10 million yuan. This engine is more than a little bit better than the e-plane turboshaft. The price of two or three million yuan is really not expensive.

However, Li Tianfeng had an account in his mind. Even if the price was two or three thousand, each engine had an amazing profit. Although such an engine had excellent performance, it fully considered the processability and cost during design. The manufacturing process of each part was excellent and the cost was not high, and the profit in the middle was more amazing.

Of course, Li Tianfeng would never talk about the profit everywhere. Making money in silence is the king, and this is selling aircraft engines, and every penny earned is open and full of money. Li Tianfeng was not under any pressure.

Let’s talk about the first engine reversal period. The newly developed aircraft engines in China generally do not reach 2,000 hours, but some technologies are mature and have been mass-produced for many years. The first reversal period is mostly 2,000 hours, and there are still 3,000 hours.

For example, the turboprop B engine of the e-plant was developed in the 1970s, and the technology has basically been very mature. For such an engine, the first turnover period is 2,000 hours, and for a turboprop B engine used in civil aviation, the first turnover period is 3,000 hours.

Li Tianfeng believes that according to his opinion, his engine is basically mature in technology and the process is basically mature, 2,000 hours or even 3,000 hours are completely OK. Of course, everything will be clear after the life test drive.

As everyone talked, this engine had completed the assembly of several major components. The assembly bench was flipped 180 degrees, and the engine butt was facing upward, and the assembly of the turbine part began.

Li Tianfeng said with satisfaction: "Director Zhou, you are becoming more and more skilled in assembly, the assembly quality is getting better and better, and the speed is getting faster and faster."

After being praised by Li Tianfeng, Zhou Wensheng was happy, "Boss, according to the current assembly speed, one engine can be completed in two days."

Li Tianfeng looked at it and found that there were ten turboshaft engine assembly benches in the assembly workshop. One bench was equipped with one engine. Ten benches could start assembly of ten engines at the same time, and 5 engines could be installed in a day.

5 units!

There are 5 units a day, more than 100 units a month, and more than 1,000 units a year. It's so awesome, Li Tianfeng thought happily.

It seems that the design and shaping must be completed immediately, the life test run must be completed, the production license must be applied for, and mass production must be entered as soon as possible. Once mass production enters, it will be a lot of money!

It took less than two days for this engine to be fully assembled from the beginning to the completion of the final assembly. On the afternoon of the second day after entering the final assembly, the engine was completed. After passing the inspection, it was sent to the test workshop and started a 2,000-hour life verification test run.

On the day of the test run, Li Tianfeng went to see it in person. Seeing that everything was normal and orderly, Li Tianfeng returned to his office with satisfaction.

Shortly after returning to the office, Xu Lilong came over happily and reported: "Boss, good news, the scientific research funds we applied for have entered the final approval stage. It is estimated that in a few days, the money will be transferred to our company's account."

Upon hearing this, Li Tianfeng was happy, "Oh, I didn't expect that the speed of the relevant departments is quite fast. This is much smoother than the last time we launched the engine project."

Xu Lilong said happily: "Boss, if we do this, we will have a large amount of funds to account, and our company's financial situation will be unprecedentedly good."

It has been a while since he joined Tianfeng Technology Company. Xu Lilong found that Tianfeng Technology Company has a very good financial situation, sufficient funds, and has a considerable profit every month. Now, with a large amount of funds injected, Xu Lilong is not happy.

So far, Li Tianfeng does not know the specific amount of this scientific research fund. Li Tianfeng is also looking forward to it, looking forward to a large amount of capital injection.

"Boss, here are a few documents, please sign them yourself."

Li Tianfeng took the document, looked at it for a moment, and then said, "Mr. Xu, you can sign such a small matter of less than 10 million in the future, so there is no need to look for me again."

Xu Lilong was surprised, but he still said, "Boss, is the 10 million quota a little too big?"

Do not use someone to doubt people, but doubting them is Li Tianfeng's principle of employing people. Moreover, after a period of observation, Li Tianfeng found that Xu Lilong is very upright, very principled, and has strong work ability. He can better exert Xu Lilong's ability by delegating power appropriately.

The turboshaft D engine is about to be designed and finalized, and it has entered a 2,000-hour life test drive. Li Tianfeng's work energy is mainly on the engine and some of the company's daily affairs, and Li Tianfeng handed over all of Xu Lilong to Xu.

Li Tianfeng waved his hand and said, "Mr. Xu, that's it. You can make an idea about such small things in the future."

Xu Lilong was happy and knew that in this way, he would have a broader space to play and better play his abilities.

…………

Two updates today, the second update is here! (To be continued)
Chapter completed!