When it comes to the use of aero engines, here is a little popular science. Generally speaking, an aero engine can be overhauled three times, and the new aircraft needs to be returned to the aero engine factory for overhaul after it has been installed on the aircraft for a specified period of time, or after reaching the specified number of years.

This is the first overhaul, after the completion of the overhaul, after the factory inspection and commissioning, in line with the requirements, the engine test qualified, the engine can be installed on the engine again, and reach the specified time, or after reaching the specified years, return to the aero engine manufacturing plant for two overhauls.

After the second overhaul, there is a third overhaul, generally speaking, an aero engine can be overhauled three times, of course, there may be uninterrupted life troubleshooting in the middle, which has no impact on the service life of the engine, not to mention these.

Take the turboshaft C engine of factory E as an example, the service life of the first overhaul period is now tentatively 500 hours, that is to say, the new turboshaft C engine leaves the factory and is installed on the aircraft for a total of 500 hours before returning to factory E for the first overhaul.

500 hours is relatively short, and Li Tianfeng estimates in his heart that his vortex C is definitely more than 500 hours.

In the final assembly workshop.

This engine is being assembled, these assembly workers are skilled, and the assembly and disassembly of this engine have been carried out many times before, everyone is very familiar with this engine, and the assembly progress is relatively fast.

Li Tianfeng was watching the assembly of the workers on the side, Qiu Wenan was also beside him, and Zhou Wensheng, director of the assembly workshop, was also beside him.

Seeing that several of his assembly workers were skilled, Zhou Wensheng felt that his face was very face-saving, and his heart was not bad, so he took the initiative to ask: "Boss, this engine is used for life test, what is the life of our engine for the first overhaul?" ”

How much is the lifespan. Li Tianfeng had just agreed with Qiu Wen'an, and it had not yet been announced to the public, but everyone must know about this matter, so Li Tianfeng had no intention of hiding it. Li Tianfeng said: "Our turboshaft D engine, the first overhaul period of the life is tentatively set at 2000 hours. ”

The first overhaul period life is also called the first overhaul life, for a new engine, as far as the domestic situation is concerned, it is generally set at 300 hours or 500 hours, rarely 1000 hours, and the first overturn life of the vortex D is 2000 hours.

Hearing this, Zhou Wensheng was slightly surprised, you know. Before joining Tianfeng Technology Company, Zhou Wensheng had one to twenty years of work experience in a large domestic aviation company.

Zhou Wensheng said: "Boss, the first turnover life, the first time set 2000 hours, but also almost set a new record in China, as far as I know, the first turnover life of the turboshaft C engine of factory E is only 500 hours. ”

Li Tianfeng hadn't spoken yet. Qiu Wen'an, who has always disliked words, said with rare pride: "Director Zhou, the first issue of 2000 hours." This is still a conservative estimate of the boss, according to my opinion, there is no problem with the first turn of our engine of 3000 hours. ”

What the! 3000 hours!

Hearing this, Zhou Wensheng looked at Li Tianfeng with a little shock, with an expression of disbelief on his face, and thought in his heart. Oh my God, 3,000 hours, this is definitely a precedent in China, setting a new record.

Li Tianfeng nodded, "After the final assembly of this engine is completed." Entering the 2000-hour life test, if the engine is normal after the completion of the 2000-hour life test, you can add another 1000 hours, so that it is a 3000-hour life test. ”

It turned out that it was really possible to be 3,000 hours, and the 2,000 hours just now were only temporary, Zhou Wensheng thought happily in his heart.

Zhou Wensheng, who knew the importance of the service life of aero engines, was slightly excited in his heart, looking at the engine being assembled, his eyes almost lit up, as if he had seen a peerless treasure.

The first turn period is 2000 hours, and later, it may still be 3000 hours, such an engine, according to the first turn of 2000 hours, the total life of an engine is 8000 hours, and one can top several other engines.

Zhou Wensheng said: "Boss, in this way, we can top several others like this, and the price of this engine is not ......."

In Zhou Wensheng's mind, an astronomical number emerged, and there was a burst of excitement in his heart.

Li Tianfeng nodded and said, "Such an engine will cost at least twenty or thirty million." ”

20 or 30 million!!

Zhou Wensheng glanced at Li Tianfeng excitedly, and thought to himself, the boss is really good, one is 20 or 30 million, how many are the ten engines, and what about 100 engines?

Zhou Wensheng found that his head was a little short-circuited at this moment, and there was a little bit of inadequacy.

Li Tianfeng saw Zhou Wensheng's expression, and couldn't help but smile slightly, such a price, Li Tianfeng is still relatively conservative, Li Tianfeng has already inquired, the price of the turboshaft C engine of factory E is more than 10 million, and his own engine is better than the turboshaft C of factory E, and the price of 20 or 30 million is really not expensive.

However, Li Tianfeng has an account in his heart, even if the price is two or three thousand, each engine also has an amazing profit, such an engine, although the performance is very good, but in the design of the full consideration of manufacturability and cost, the manufacturing process of each part is excellent, the cost is not high, the profit in the middle is more amazing.

Of course, what about profits, Li Tianfeng will never talk about it everywhere, making a fortune in a muffled voice is the king, and this is the sale of aero engines, every penny earned is above board, Li Tianfeng has no pressure in his heart.

Let's talk about the first turning period of the engine, the newly developed aero engine in China generally does not reach 2000 hours, but some mature technologies have been mass-produced for many years of aero engines, and most of the first turning period is 2000 hours, and there are 3000 hours.

For example, the turboprop B engine of the E factory, which began to be developed in the seventies, has basically been very mature in technology until now, and the first turning period of such an engine is 2,000 hours, and the first turning period of the turboprop B engine used in civil aviation is still 3,000 hours.

Li Tianfeng believes that his own engine, according to his own opinion, is basically mature in technology, and the process is basically mature, 2000 hours, or even 3000 hours, it is completely okay.

As we speak, this engine has completed the assembly of several major components. The final assembly bench is turned 180 degrees, the engine butt is facing up, and the assembly of the turbine section begins.

Li Tianfeng said with satisfaction: "Director Zhou, you are now more and more proficient 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, the final assembly of an engine can be completed in two days." ”

Li Tianfeng looked at the assembly workshop of ten turboshaft C engine assembly benches, one bench is equipped with one engine, ten benches can start the final assembly of ten engines at the same time, and five engines can be installed in one day.

5 units!

5 units a day, more than 100 units a month, and more than 1,000 units a year, it is too good, Li Tianfeng thought happily in his heart.

It seems that the design must be finalized immediately, the life test must be completed, the production license must be applied, and the mass production must be entered as soon as possible.

This engine, from the beginning of the final assembly, to the final assembly was completed, it really took less than two days, the next afternoon after entering the final assembly, the engine completed the final assembly, passed the inspection, sent to the test workshop, and began the 2000-hour life verification test.

On the day of the test drive, Li Tianfeng went to see it in person, and saw that it was normal and orderly, and Li Tianfeng returned to his office satisfied.

Soon 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, and it is estimated that in a few days, the money will be remitted to our company's account." ”

Hearing this, Li Tianfeng was overjoyed, "Oh, I didn't think that the speed of the relevant departments is quite fast, this is much smoother than the last time we approved the engine." ”

Xu Lilong said happily: "Boss, in this way, we have a large amount of money in the account, and our company's financial situation will be unprecedentedly good." ”

It has been a while since joining Tianfeng Technology Company, Xu Lilong found that Tianfeng Technology Company is in a very good financial condition, with sufficient funds, and has a lot of profits every month.

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

"Boss, there are a few texts here, you can sign them in person."

Li Tianfeng took the text, looked at it for a while, and then said: "Mr. Xu, this kind of small matter of less than 10 million, you can sign it in the future, there is no need to look for me again." ”

Xu Lilong was pleasantly surprised, but he still said, "Boss, isn't the amount of 10 million a bit big?" ”

Don't use suspicious people, this is Li Tianfeng's principle of employing people, and, after such a period of observation, Li Tianfeng found that Xu Lilong is very decent, very principled, very strong in work, and his own appropriate delegation of power can better play Xu Lilong's ability.

The turboshaft D engine is about to be designed and finalized, and has entered the 2000-hour life test, Li Tianfeng's work energy is mainly on the engine, and some of the company's daily affairs, Li Tianfeng are all handed over to Xu Lilong to deal with.

Li Tianfeng waved his hand and said: "Mr. Xu, it's decided, you can just make up your mind about this kind of trivial matter in the future." ”

Xu Lilong was happy for a while, knowing that in this way, he had a broader space to play and could better play his ability.

…………

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