v2 Chapter 457： Aero engine set sail

June 10, morning.

Mu Yang intends to speed up the research and development of aero-engines, and find suitable aero-engine technologies directly from Reading System's common shelf stores.

★Manufacturing method of the sixth generation new civil aeroengine★

[Technical introduction: The combustion chamber, air inlet, and nozzle of the turbofan engine are manufactured by metal 3D additive technology, which realizes an integrated structure, improves the molecular activity, and is more conducive to improving combustion efficiency; the turbine blade with cooling holes, Instead of using laser welding technology, it also uses metal 3D additive technology; it uses new high-temperature resistant coatings and composite materials to improve stability and durability.....

It has the following advantages: Compared with conventional aero engines, it has higher combustion efficiency, high thrust-to-weight ratio, and more fuel-efficient...]

[ANO6: The world's top level, about 5-10 years ahead of the most advanced technology in the current laboratory, required achievement points: 250]

The sixth generation?

When Mu Yang saw this word, he felt very awesome.

It was not until the beginning of the 21st century that the fifth-generation turbojet aeroengine appeared, represented by the Ugly F135 engine and the F136 engine jointly developed by Eagle and Ugly, with a thrust-to-weight ratio of 12 to 13. The F135 engine is equipped on the F-35 fighter .

After 2010, relying on its strong technical research and development capabilities, the Ugly Country has launched the research and development of the sixth-generation turbojet aeroengine, and it is expected that the thrust-to-weight ratio will reach more than 20.

If the fighter's thrust-to-weight ratio exceeds 16, it can already achieve vertical take-off and landing.

The development of civil aviation engines is slower than that of military engines. They use turbofan engines, and their thrust is as high as fighter jets without turbojet engines.

At present, no matter whether the civil aviation engine is developed or used by the government, there is no sixth-generation aero engine in service. It is only said that it is in the process of research and development, and it is still a long way to go to mass production and service.

AN06 requires multi-disciplinary complex and comprehensive system engineering such as aerodynamics, engineering thermophysics, heat and mass transfer, transmission, machinery, strength, sealing, automatic control, etc. Among them, aerodynamics and engineering thermophysics require level 7 skills.

Most of Mu Yang's skills meet the requirements. After upgrading the skills that do not meet the requirements, click to buy this technology and absorb it.

After about a few minutes, the absorption is complete.

He has a better understanding of intake, fan, low-pressure and high-pressure compressor, combustion chamber, high-pressure and low-pressure turbine, tail injection, and multiple systems such as engine control, indication, fuel, ignition, steering, exhaust, lubricating oil, and start-up .

To produce the sixth generation, the cost is much higher, and, judging from the current situation, the fifth generation already meets the requirements, and it is much more advanced than the C919 civil aviation engine.

This is applied to large civil aviation aircraft. If the cost of engines is too high, the manufacturing cost of large civil aviation aircraft will also rise accordingly.

Not to mention the fifth-generation aero-engine, there is no fourth-generation in China yet.

Before a type of aero-engine is officially finalized, it has to go through a variety of tests, large and small, from the ground to the air. The cumulative test time exceeds 10,000 hours, and the test cycle lasts for several years or even ten years.

According to this situation, Mu Yang definitely couldn't wait that long.

Fortunately, the technology he bought from the system has actually been verified and can greatly shorten the cycle.

Xinghai Group's aero-engine project has been established since last year, with more than 200 people working on the project, and the laboratory is located at the No. 2 base of the headquarters base.

Two civil aviation aero engines were purchased through channels, one of which was installed in the wind tunnel.

that afternoon,

Mu Yang came to the wind tunnel laboratory. His arrival caused many researchers to be surprised. The chairman had never been to the aviation laboratory.

Is the sun coming out from the west today?

There are tens of thousands of employees in Xinghai Group, and most of them don't see the chairman several times in a year.

"Hello Chairman!"

"Well, where is your manager Han?" Mu Yang went directly to the project manager.

"It was still here just now, probably in the laboratory next door

, or I'll make a call. "An employee replied respectfully.

"Okay, I'm looking for him."

After a while, Han Li, in his forties, came to the wind tunnel laboratory in a hurry. When he saw the chairman, he hurried over to say hello.

"Walk with me, and let me introduce the progress by the way."

"Okay." Han Li panicked slightly, hoping to satisfy the chairman.

"In the past year, we mainly designed tooling fixtures. At present, we have manufactured more than 200 general-purpose tooling fixtures. We have not produced special tooling fixtures. We are afraid that they will not be suitable after they are produced. At the same time, we are familiar with various laboratory equipment and have prepared for the development of new aero-engines. The basics..."Han Li spoke eloquently, and the more he spoke, the smoother he was, while observing the chairman's expression, he only saw that the chairman nodded slightly, but there was no expression on his face.

While observing, Mu Yang pointed out problems directly, such as the wind tunnel. He said: "The safety of the wind tunnel must be paid attention to. Add a safety light barrier. When someone is inside, it cannot start and run. Make the glass of the observation room bigger. ....."

Throughout the afternoon, Mu Yang was inspecting the situation of each laboratory and asked many questions: "I went back and made a list for you. I talked a lot, and you can't remember much. In the next two months, put me Make rectifications. Of course, if you have any objections, you should also raise them.”

"Okay, the chairman's eyes are sharp. Just looking around, he found so many problems, which shows that we haven't done our job well."

Mu Yang concluded: "In general, you have done a good job in the basic work, but we are going to be the first in the world to do things, and the requirements are more demanding. I hope you will have this ideological awareness."

"Yes, the company's metal 3D additive equipment and five-axis linkage CNC machining center have been successfully developed, which has solved many problems."

After three or four hours of communication with the chairman, Han Li felt that he was more familiar with the chairman, and he also asked many technical questions.

"Well, just like turbine blades with cooling holes, we can use metal 3D additive equipment to manufacture them, the cooling effect is better, and we can also spray composite materials on the blade surface and inside the holes, which cannot be done by conventional machining .”

Mu Yang replied, after walking around, he left the laboratory, returned to the 103rd floor of Xinghai Building, and used the human brain converter to summarize the questions. In just half an hour, he listed today's questions, with a total of more than 20,000 words .

The next afternoon, Mu Yang sent the content to Han Li.

After Han Li received the email, he couldn't help admiring: "So fast! It seems that the chairman has to work overtime, and we have to hurry up."

In the next half month, Mu Yang exported the drawings of the aero-engine.

Normally, an aero-engine has a total of 20,000 to 30,000 parts, many of which are duplicates and standard parts. Now many parts are manufactured using metal 3D additive technology, with a more compact structure, a larger thrust-to-weight ratio, and easier assembly. quick.

Originally, the unloaded weight of the C919 was about 40 tons, and the maximum load was more than 20 tons. The maximum take-off thrust of the C919 was required to reach 72.5 tons. Nowadays, many structural parts use metal 3D additive equipment, and the dead weight of the C919 has dropped to 38 tons. tons or so.

The C919 is equipped with two aero-engines, each LEAP-1C weighs 3,935 kg, has a thrust of 13.5 tons, and a thrust-to-weight ratio of about 3.5.

This thrust ratio is too low, and LEAP-1C is more than a ton heavier than conventional aero engines. It can be said that the "monkey version" with reduced performance belongs to the third-generation engine.

Like GM's GE90, the world's highest-thrust civil aviation engine, the test thrust reached a terrifying 56.9 tons. Of course, it is also considered a big guy, weighing 9 tons and having a thrust-to-weight ratio of 6.5.

The thrust-to-weight ratio is an important parameter of an aero-engine. If the engine is made bigger, the thrust will also increase, so you can't just look at the thrust.

Since civil aviation engines use turbofan engines, the thrust-to-weight ratio is certainly not as good as that of turbojet aeroengines, and the thrust-to-weight ratio can easily exceed ten.

The thrust-to-weight ratio of ANO6 can reach more than 10, and the thrust-to-weight ratio of AN05 is about 8. Muyang wants to design an engine with a thrust of at least 15 tons to meet the requirements of C919, according to AN05

Thrust-to-weight ratio, the weight of a single engine is only 1.875 tons.

Originally, the total weight of the two LEAP-1Cs was about 8 tons, but now it is only 3.75 tons, a reduction of 4.25 tons, which is too exaggerated.

If a single AN05 engine weighs 4 tons, the C919 can take off vertically.

Therefore, even if it is AN05, the technical level has reached the world's top level. Once it is born, it will definitely shock the whole world.

On June 20, Muyang held an aero-engine project meeting and officially started the manufacture of aero-engines.

The first aero engine is named "XH-AN05-01", 01 represents the series, and it is the first engine of Xinghai Group. The actual design thrust is 16 tons, and the engine weight is 2 tons.

If applied to C919, the flight speed will be about 30% faster.

Han Li was shocked when he saw the technical parameters of the engine: "Chairman, the thrust-to-weight ratio reaches 8, can we achieve it?

This sentence applies not only to Han Li, but also to other experts. too exaggerated!

Mu Yang explained: "You will know it after it is built. We use a lot of metal 3D additive technology to manufacture the engine. The weight of the engine is much lighter. At the same time, the combustion chamber has been optimized. The thrust-to-weight ratio is 8. It is not an exaggeration. If we use conventional manufacturing, I The thrust-to-weight ratio is estimated to be around 6."

After listening to the words of the chairman, if you analyze it this way, it seems that the thrust-to-weight ratio is 8 is not an exaggeration.

Mu Yang went on to say: "We are trying to produce a prototype early next year. The timeline is a bit tight, but we have been preparing for such a long time, and the factory will give priority to manufacturing this engine."

Today, the metal 3D additive factory has more than 300 equipment, undertakes global business, and is still expanding the number of equipment. It is expected that this year's revenue will reach 3.5 billion US dollars.

"OK!"

Everyone is full of passion and looking forward to XH-AN05-01.

After Mu Yang left, Han Li and the experts were still discussing the engine parameters. "If our aero engine is developed, it will definitely scare our peers." "Whatever GM, Rolls, Pratt, and Snecma will stand aside."

"Everyone is still doing things in a down-to-earth manner. This is just a prediction. We haven't made it yet. How can we have the qualifications to evaluate our opponents. Moreover, this information is all based on the chairman, not us. Don't you feel ashamed?" Han Li said calmly that he was not that optimistic.

"I'm really ashamed, let's work hard together and try to make it as soon as possible."

They were also curious about how the chairman came up with the technical information, but they were curious, and they didn't dare to ask this question, and they didn't dare to discuss it openly, keeping their curiosity in their stomachs.

Unknowingly, the time has come to July 1st.

Mu Yang's two children had just turned one year old, so they didn't have any big birthday celebrations, just simple arrangements at home.

Two days later, July 3rd, on this day, Zhou Chen will report to Mu Yang the situation of the Xinghai Group in the past six months.

Half an hour later, Zhou Chen's report was completed.

In the past six months, excluding Hummer and new energy battery projects, Xinghai Group's revenue was more than 70 billion yuan, a year-on-year increase of about 20%.

The main growth items are metal 3D additive manufacturing and sales of CNC machine tools, especially metal 3D additive manufacturing, which is in high growth.

Starting from this year, Xinghai Group needs to pay a 7.5% corporate income tax. This tax rate will be implemented for three years, and after three years, it will be implemented at a 15% tax rate.

Mu Yang put down the report materials, talked about the company's key research and development work, and pointed out the general direction of the company's development.

"Chairman, we plan to launch a small Hummer in medium and large sizes, what do you think?" Zhou Chen suggested.

Mu Yang thought for a while, and replied: "This is possible. The Hummer EV has been launched for nearly two years. It's time to launch a smaller Hummer EV. For most people, the price of the Hummer EV is too high, and The car is too big.

However, even if a small Hummer EV is launched, the price cannot be much lower, about a few hundred or two hundred thousand less, otherwise it will destroy the Hummer EV brand. you put the design side

After the case is completed, let me review it. "

The Hummer EV is 5.4 meters long and 2.2 meters wide. The smaller Hummer EV is 5 meters long and 2 meters wide. Muyang planned it long ago.

Domestic Hummer EV, the low and high versions are priced at 930,000 yuan and 1.2 million yuan respectively. According to Muyang’s pricing for the smaller Hummer naked car, it is estimated to be 750,000 yuan and 1 million yuan. The battery rating remains the same and the battery life is longer , the high version can reach 1,000 kilometers.

In this life, Xinghai Group promotes the development of domestic new energy vehicles, and new energy vehicles develop faster. It is estimated that the sales of new energy vehicles will reach 13% of the total number of vehicles this year, and it is expected to reach 20% next year.

Tesla did not develop smoothly in China, mainly because Mu Yang deliberately suppressed it. Zhou Chen asked again: "Seven-seater or five-seater design for the small Hummer EV?"

"Five seats. We already have seven seats, and the car is five meters long. If there are seven seats, the third row cannot accommodate adults, and the second row is not wide enough."

Zhou Chen wrote down the chairman's request and handed it over to the Automobile General Institute.

After the two chatted for a while, Zhou Chen left the chairman's office.

After Zhou Chen left, Mu Yang calculated the funds on hand.

The rocket launch base and large-scale structural factories require an investment of 50 billion yuan. At present, Xinghai Group is expanding the 5,500-acre industrial park, and the construction of employee residences and villas also requires a lot of money.

Mu Yang got 54 billion U.S. dollars for the transfer of Hummer stocks. A lot of this money was used to purchase Ugly equipment and raw materials, and the money that could be transferred to Huaguo was about 40 billion U.S. dollars, equivalent to 300 billion yuan.

Last year, the after-tax profit of Xinghai Group was about 100 billion yuan.

Mu Yang has never touched Xinghai Investment Company's money, and it is not used for dividends every year.

Currently, Muyang and Xinghai Group can provide about 350 billion yuan of funds.

After one or two months of investigation and discussion, the location of the smart city has been decided. The planned total investment is 2 trillion yuan, which will be divided into five phases and eight years of construction. The start-up capital needs 300 to 400 billion yuan.

For the first time since planning the smart city, Mu Yang felt that the funds were stretched. Maybe he could provide the start-up funds, but it would be difficult to come up with the second and third phases of funds.

Fortunately, Xinghai Group did not plan to invest 100% in the smart city, as long as it is built and operated, it can complete the task. Mu Yang never thought about making money from this smart city, and Mu Yang agreed to H City ZF and foreign capital to invest.

After negotiating with the ZF of City H, the ZF of City H will buy shares with land. Out of the 50,000 mu, more than 40,000 mu is undeveloped land, and the ZF of City H can't afford capital investment, so it can only buy shares with these 40,000 mu. 15% of the shares.

The other 10,000 mu of land will be demolished. Xinghai Group needs to pay 300-400 billion yuan for demolition and other expenses. Wherever it is developed, it will be demolished.

Mu Yang intends to take up 50% of the shares. UU Reading means that within eight years, he needs to spend one trillion yuan, and there is still a shortfall of 650 billion yuan. On average, he needs about 80 billion yuan per year.

In other words, most of Xinghai Group's annual profits will be used for smart cities.

It is expected that if the financing fails, Xinghai Group will need to pay the remaining 1.7 trillion yuan.

Moreover, the planned total investment of 2 trillion yuan may exceed that, so he needs to make sufficient preparations.

"Who said I'm not short of money, but now I'm short of money, and it's a lot worse!"

Mu Yang complained to himself that for the next eight years, he will work for this smart city.

"Eh, no!"

Mu Yang ignored a problem. The total investment is 2 trillion yuan, which is divided into 8 years of construction. In fact, some houses and shops can be pre-sold and returned to the outside world. In this way, the investment capital is greatly reduced. The first two installments of investment funds are sufficient.