Chapter 1799: Go the opposite way and reduce the air inlet temperature

"It is true that the material problem is not solved now. Powder metallurgy and production processes are facing great challenges. The import temperature is too high. Whether it is titanium-based high-temperature alloy or nickel-based high-temperature alloy, our current formula and production process cannot bear it..."

Sun Hong looked at Xie Kai in surprise.

Everyone knows this principle.

What nerves does Xie Kai have here?

He would never think that people who specialize in this are not as good as him, a young man who doesn't know much about engines.

"Did the problem we are facing now increase the front-end temperature and the propulsion efficiency decrease due to material problems?" Xie Kai knew what Sun Hong's expression meant.

I don't bother with this either.

What is needed now is to create a useful engine.

"Yes. So the inlet temperature dropped by 120c from 1540c." Liao Dongfeng was not satisfied.

Xie Kai looked at the confusion on their faces and was too lazy to enjoy the pleasure brought by showing off. "The Al-31 engine we imported from the Soviet Union and the front temperature of the turbine was only 1392c, right?"

"Xie Kai, just say whatever you have and don't waste time." Long Yaohua couldn't stand Xie Kai's silence, "If you find out, bring it up."

Although I really want to tell Xie Kai that he is not a professional, don’t pretend to be professional, as he will be struck by lightning.

But thinking about 404's history of making a fortune, I stopped saying that.

What if Xie Kai really knows what's going on?

After all, Xie Kai knows a lot about the development of various foreign technologies. Maybe this kid brought them here on purpose, and then pretended to understand it inadvertently. What did he say it?

The 404 in the Soviet Union has contacted many technical personnel in the field.

A group of aircraft engine personnel are coming soon.

"When our materials cannot keep up with each other and the design is not as good as the international experienced team, it is not appropriate to emphasize that it only one-sidedly increases the engine intake temperature. Aero engines are different from other ones. Depending on the design and structure, there is very little air that can be used for cooling during operation, and no other cooling system can be added, so they can only make requirements for the materials, requiring the materials to have stronger heat resistance..."

Xie Kai said what he knew.

These are the most basic theories.

Except for Long Yaohua and others, most of the people present were professionals from Dongfeng Power Plant.

They really don't understand what Xie Kai wants to express.

"In fact, to solve the difficulties we are currently facing, we should not just work hard on the materials, but modify the design, and improve the combustion efficiency and propulsion efficiency after the relatively low intake temperature enters, rather than just emphasizing increasing the engine thermal efficiency..." Xie Kai finally said what he wanted to express.

The people on the scene were all experts, but they didn’t understand what Xie Kai said.

But they don't believe it, and the problem that has always troubled them can be solved so easily.

"Reduce the temperature? This will make the propulsion efficiency worse..."

"If the temperature is too low and the engine thermal efficiency is insufficient, the power provided by the power system will be worse..."

"Others raise the temperature and lower the temperature, and they cannot improve the power system of the fighter jet..."

Most people don’t believe Xie Kai’s statement.

Sun Hong was thinking about the feasibility of Xie Kai's proposal.

After the establishment of Dongfeng Power Plant, the turbofan-6 team, the turbofan-8 team and relevant technical information were all included in the Dongfeng Power Plant. While expanding, the entire power plant continued to improve the design of these two turbofan engines and invested a lot of money to conduct experiments.

For a long time, we have been constantly improving the design and increasing the temperature at the engine's intake end, so as to achieve higher thermal efficiency and increase the engine's power, so that the fighter used can have a better power system.

The temperature reduction mentioned earlier is not to reduce it after modifying the design, but to test the entire engine when the intake end temperature reaches 1540c.

The effect is very poor, and the car is running continuously and uninterrupted. Part of the turbofan in the core of the engine has been melted after only working for more than a hundred hours.

"The Super-7 self-used model does not require high thrust-to-weight ratio of the engine. What we need is an engine that can improve service life and reduce unit cost!" Xie Kai reminded everyone, "Why can't you try it? The temperature does not need to be reduced too much, but it can effectively increase the service life of the core components of the engine..."

Xie Kai is not an expert in this area.

But he thought he could give it a try.

Many domestic technical experts are indeed prone to misunderstandings.

Without experience, most people think that only by increasing the temperature of the intake end and the thermal efficiency can the engine thrust be increased.

"Unless you can make a breakthrough now. Since there is no way, just change your thinking and seek another direction. Originally, it was just a mid-push engine. If you need greater thrust, just wait to use the turbofan-10! Now there is no use!" Speaking of the latter, Xie Kai was a little angry, "The design is ready-made, and the models used for verification in supercomputers are also ready-made. As long as you modify the design and simulate and prove it, there is no need to do it if it is not suitable, and it won't take much time."

No one has ever thought about the problem like this.

Isn't the engine supposed to be like this?

"It is indeed possible. As long as the service conditions are met, the temperature of the intake end will be reduced a little, and the service life can be greatly improved." Sun Hong agreed with Xie Kai's statement.

Since Xie Kai proposed it, he was thinking about it.

Haven't considered it before.

"Mr. Sun, this..." Someone was dissatisfied.

"This is the fact. When we consider the problem, we always hope that the engine has stronger thrust, rather than giving up the highest thrust, first of all, pursuing to meet the service life..." Sun Hong retorted without any politeness, "This is caused by our solidified thinking. The design and model are ready-made. We can quickly prove whether such a solution is suitable."

It was also an accident that Sun Hongneng recognized such disgust.

But he didn't show much, so he looked at Sun Hong like this.

Sun Hong looked embarrassed, "Consultant Xie, this is indeed a problem caused by our thinking. We have not considered it before. We immediately model and simulate it with a supercomputer..."

"How long does it take?" Xie Kai thought it would take a long time.

Modification of engine structure, models and parameters, etc. all require redesign and adjustment, and modeling is not an easy task.

A few months have been a relatively short time.

"We have already had a fixed formula for modifying the model and parameters. As long as we do not modify the general design, we can directly modify some parameters. We only use it to verify and reduce the temperature in advance to determine the engine's working life. If it is really feasible, then modify the design. It only takes three days to prove whether this plan is feasible..." Sun Hong said anxiously.

Since you can know whether the temperature reduction plan is feasible in just three days, Xie Kai doesn't mind waiting for three days.

"You are here to watch. If possible, come back and tell us." Long Yaohua and Li Mingshan did not have as much time as Xie Kai.

Xie Kai didn't know whether the two agreed to the launch of their stealth fighter project, but Xie Kai had no objection to the engine used by the domestic self-used version of the Super-7.

Although the performance of the Super-7 is lagging behind, it uses a simplified version of the telex overcontrol system, has a stronger avionics system, and has better maneuverability than the J-7 and J-8. If it serves the Air Force, its natural effect is better, right?

"Chief, please rest assured. As long as there is a result, I will report to you as soon as possible." Xie Kai promised.

We must report to these two big guys.

Without the support of these two people, some of his plans would not be implemented.

Whether it is the No. 10 project of 611 and 132 Factory, or the stealth fighter that Xie Kai is preparing to build, they all need the support of the big guys.

If these two projects are not supported, some technologies cannot be verified, and stealth drone attack aircraft, etc. will not be able to continue.

Under Xie Kai's arrangement, Long Yaohua and Li Mingshan, the two bigwigs, took the C-910 business plane from Base 404 and returned to the capital. Xie Kai stayed in Rongcheng and waited for the simulation experiment results of Sun Hong and others.

From the future, Xie Kai has an unimaginable paranoia about supercomputers.

In his opinion, computer simulation can effectively reduce experimental funds during scientific research.

Therefore, whether it is the 404 base or some important units under it, the scientific research team has its own supercomputers produced in China, and does not need to pay for simulation operations from the headquarters or domestic supercomputer centers.

"With a supercomputer, a lot of work is much easier. We considered modifying various parameters when modeling. The original plan was that the turbofan-6g was developed to be suitable for use, which is easier for subsequent modifications. I didn't expect it to be used now..." Sun Hong has a lot of work to worry about with a supercomputer.

You know, these supercomputers are counted in billions at every turn.

Originally, they didn't dare to think about it.

In many places, supercomputing centers, it takes several years to queue.

Hongqi Group has money and can produce processors by itself. It is an important scientific research unit under its jurisdiction. It has at least one supercomputer without a home. This is all to save scientific research funds and research time.

"Don't think too much, try it out if it works. If it doesn't work, think of other solutions. As long as the simulation is fine, improve the design." Xie Kai couldn't guarantee whether it was really possible.

He is not an engine expert.

At most, you can make some suggestions.

Sun Hong didn't say nonsense.

Xie Kai is not familiar with the use of supercomputers.

Especially the various models and parameters of different scientific research units are different. There are too many units under the 404 base, and the total number of supercomputers is at least ten, and they are constantly upgrading to improve computing power.

In the past few days, Sun Hong and other technicians have been staying in the supercomputer center. The computing power here is not as good as the 404 base with many supercomputers. However, this supercomputer with a transportation speed of 3 billion times per second has no other tasks and is very fast to calculate.

Xie Kai doesn't understand anything he will not blindly command.

He didn't do anything else, so he stayed in the supercomputer center, waiting for the results of Sun Hong and others.

After three days, Sun Hong and others looked at the technicians but almost never closed their eyes.

Finally, the result came out...
Chapter completed!