Mobilization meeting in the morning.

Face the brightly colored national flag.

The blood and fighting spirit of tens of thousands of employees of COMAC have all been stimulated.

Everyone breathed a sigh of relief in their hearts and vowed to mass-produce a large domestic passenger aircraft!

However, after the surging blood cooled down, the reality in front of him was still cruel.

The so-called collective oath and shouting a few slogans are only for the purpose of stabilizing the morale of the military and unifying thinking.

But there are always more solutions than difficulties.

In the process of calling the No. 2 elderly, He Jinlong, the boss of COMAC, came up with his alternative solution.

"Purchase of PS90 engines manufactured by the Russian Aircraft Parts Manufacturing Group."

"This engine of the Russians is still good, with low fuel consumption, reaching the level of CFM56-5C, a service life of more than 10,000 hours, a long overhaul interval, and a one-third cheaper purchase price."

"The long-range wide-body passenger aircraft C929, which we jointly developed with the Russian UAC company, is expected to use the PS90 series engine."

However, although the PS90 series of Russians is good, the price is much cheaper.

However, fuel consumption is still 16% higher than that of the LeapX engine.

The service life is about half less.

As for the failure rate, the Russians' engines always give the impression that they are not particularly reliable.

The purchase of the PS90 engine from the Russians is the only way to alleviate the problem until the successful development of a domestic replacement engine...... However, it will still significantly reduce the market competitiveness of C919.

It can be seen that the field of civil aero engines is somewhat similar to the chip industry, that is, the winner takes all.

It's hard for the loser to even grab the soup.

He Jinlong still tried his best to assure: "We will seize the time and continue to optimize our aircraft!" Although the fuel consumption of the engine is a little larger, our C919 airliner body is generally about 15% lighter than the same type of aircraft of Boeing and Airbus, and if you cut off some excess weight, it can be 18% lighter than them. ”

"The plane is lighter, the speed is faster, and the fuel consumption is lower."

"Coupled with our manufacturing cost of about 20% cheaper and quite affordable selling price, we still have a certain market competitiveness after being introduced to the market."

The reason why C919 is lighter in weight and cheaper in construction is because the people of Z have mastered a technology of cattle forks.

3D printing technology for large structural parts.

This technology has not yet made a major breakthrough abroad, and it cannot print large structural parts with a diameter of several meters or more than ten meters.

But the 3D printer in country Z can.

Using this technology, key components such as aircraft wing beams, fuselage skeletons, etc., can be printed and molded by 3D printers at one time, with qualified strength and material utilization rate of more than 90%.

The wing beams and other components used in Boeing aircraft and Airbus aircraft are still processed by traditional industrial machine tools, with high scrap rate, low material utilization, production cost and production efficiency, which are at a great disadvantage.

And it is precisely because of the blessing of 3D printing technology that COMAC's C919 has a great competitive advantage in the market, and it can even be said that it has become the king of cost performance in the 200-seater, 5,000-kilometer passenger aircraft market.

will sweep the civil airliner market.

Boeing, which is extremely afraid of this, and even Airbus in Europe, have the motivation to obstruct it...... Before mastering 3D printing technology, they don't want C919 to be a competitor in the market.

After the C919 uses the Russian-made PS90 engine, the advantages brought by 3D printing technology are immediately offset and immediately becomes a mediocre cost-effective aircraft.

And with Maozi's character, even if the performance of their products is not very good, the price will not be soft, and it is cheap to buy their engines now, and it may not be necessary after a while.

"We still have to have our own advanced engine, we have to fight for this breath!"

On the phone, the second elder sighed and said.

He Jinlong fell silent.

……

Then.

The secretary walked into the office: "Mr. He, Chen Gang, the deputy chief designer of the landing gear project team, said that he wanted to see you and said that he had an important matter to report to you. ”

Chen Gang?

At the mobilization meeting in the morning, Chen Gang was nowhere to be seen.

When someone typed this little report in his ear, a trace of unhappiness flashed on He Jinlong's face.

But he still didn't take it to heart, who made him give birth to an amazing son?

But at such a serious event as the mobilization meeting, at a critical moment when it requires a unified mind and fighting spirit, he is not there? What does this mean exactly?

He Jinlong was still a little nervous in his heart.

I didn't want to see this person at once.

But I heard the secretary say again: "Mr. He, Designer Chen also brought his son over, it is Chen Jin, the founder of Xinghai Technology." ”

"Meet, let them all come to my office."

……

Entered the office.

"Mr. Chen, welcome, welcome, young and promising, really young and promising."

He Jinlong stretched out his hand with great enthusiasm.

"Lao Chen, you gave birth to an amazing son." He shook Chen Gang's hand again and patted him on the shoulder.

However, He Jinlong felt strange why the father and son wanted to see him, and why they came to him.

Could it be that seeing that there is no hope for mass production of domestic large passenger aircraft, he is disheartened and hopes to retire early and hope that he will approve it?

He Jinlong sneered in his heart, beckoned them to sit down, and asked the secretary to pour two cups of tea.

After chatting for a while, he asked, "I don't know what the two of you are here for?" ”

"Of course, for the sake of the engine, we have ......," Chen Gang said impatiently.

"Uh-huh~"

Chen Jinzhong coughed twice: "I mainly want to talk to Mr. He about the development of domestic engines, this topic is more confidential and high-end, this secretary comrade, I don't know if I can go out and close the door?" ”

He looked at the male secretary.

"Xiaolin, you go out for a while and close the door." He Jinlong immediately understood and let the secretary walk out of the office.

There were only three people left in the room.

"Mr. He, my son's company, there is a way to solve the problem of insufficient performance of domestic engines!" Chen Gang couldn't wait to speak again.

"Dad, what are you anxious about?"

Chen Jin glanced at him helplessly, and his eyes signaled: "You sit aside and don't talk, let me talk to Mr. He first." ”

He Jinlong glanced at him in surprise, his face full of suspicion.

Chen Gang shut his mouth in disdain.

"Mr. He, I'll delay you a little bit to talk about the development status of domestic engines, I don't know if you would like to talk to me?"

"Yes, of course."

He Jinlong nodded.

The two struck up an exchange.

Generally, Chen Jin asked, and He Jinlong replied.

"Mr. He, tell you the truth, how many years do you think our country's engine is different from the most advanced engine abroad?"

"Well, at least thirty years, to be honest, maybe even fifty years."

"Why is it so bad?"

"The engine is the product that best reflects a country's industrial base, our foundation is still too poor, the West has been industrialized for more than 300 years, we have less than 60 years, many basic areas are too bad, the simplest example, the people of country M landed on the moon 52 years ago, and we can't do it."

"But I have seen in many articles that most of the material technologies that make up advanced engines have been overcome, and the material problem is no longer a problem, the main problem is the engine design, we are not as good as others...... Is that the reason? ”

"Yes, you're right!"

He Jinlong nodded: "We have made up for the shortcomings of materials, mainly in terms of design, and our country has not yet given birth to top engine designers." ”

Of course, the engine is not powerful, and it is not all the pot of the designers, and the lack of investment from the state also accounts for a large part of the reason.

Because a good engine is not only designed, but also burned money!

Professional wind tunnels, test benches and other equipment are not to be mentioned.

Every time an engine test is conducted, the consumption of aviation fuel is several tons or dozens of tons...... And it should be burned every day, every year.

For example, if the engine enters the foreign body test, and a fist-sized stone is thrown in, the engine worth tens of millions of dollars will be completely scrapped.

This kind of money-burning behavior, not to mention the difficult economic conditions of country Z, is now rich and strong country Z, and it is still not enough to invest tens of billions of dollars every year.

To put it simply, advanced aero engines must be "krypton gold" day after day, year after year, before it is possible to win.

Once you dismount halfway, your efforts will be wasted immediately.

Only a krypton master can become an engine manufacturing powerhouse.

But......

Chen Jin has a plug-in in his hand, which can not only save a lot of krypton gold costs, but also greatly shorten the development cycle of the engine.

When Chen Jin was in front of He Jinlong, he depicted this plug-in that "saves thousands of tons of fuel every day", "arranges hundreds of engines to test at the same time each time", and "shortens the R&D cycle by 90%".

He Jinlong immediately bounced up from his chair and shouted in shock: "How is this possible? ”