A big country of aerospace with black technology

The drawings of the new liquid oxygen kerosene engine are still being drawn in an orderly manner.

After Zhang Xingyang disassembled all the drawings, he handed over the drawings of each component to those who still chose to stay in the research institute.

I can finally have time to solve some problems in the actual manufacture of the engine, such as one of the most critical problems.

Engine material problem!

As the skeleton of the engine, the material almost determines how strong an engine can be.

Especially for the materials used in engine combustion chambers and exhaust nozzles, the requirements are so high that it is difficult to increase.

Without extremely high temperature resistance and impact resistance, the ultra-high temperature and super-speed torrent generated by the engine during operation will instantly destroy the combustion chamber wall and exhaust pipe of the engine.

Generally speaking, at this point in time, the superalloys used in aerospace engines are generally titanium alloys or nickel-based superalloys.

Carbon-carbon-based composite materials, or high-temperature-resistant ceramic-based composite materials, these materials were widely used later, and in the 1990s, they were considered relatively high-end materials.

The price of large-scale preparation is high, and the general performance is not very good.

Taking two-dimensional carbon-carbon composite materials as an example, theoretically this material has excellent properties such as good high temperature resistance, ablation resistance and high temperature strength. Moreover, its density is very low, and its designability and machinability are far superior to the superalloys commonly used today.

However, the current performance of this material is not satisfactory, mainly due to the problem of the surface treatment process. When the temperature is above 3000 degrees, the carbon film on the surface will be oxidized and passivated, thereby reducing the performance of high temperature resistance.

In later generations, coatings are generally used to isolate the material from direct contact with oxygen, so as to achieve the purpose of anti-oxidation.

In the 1990s, the research on various high-performance anti-oxidation coatings was not very developed.

Especially in the 22nd century where Zhang Xingyang lives, the exploration of such basic materials has been completely handed over to the powerful central processing unit around the stars, and thus completely transformed into the output of time and energy.

That terrifying gigantic structure with a mass of two earth masses requires the use of scientific notation to fully express the amount of new materials produced each year.

Therefore, the brain protein chips in Zhang Xingyang's brain are all the best among them, and every performance in this era is Zenith Star technology that is more than a hundred years ahead of the world.

Of course, limited by the hardware equipment of this era, it is difficult to achieve the original material performance when the formula of these materials remains unchanged.

It is as if a person traveled to World War II with a complete monocrystalline silicon preparation process, and he could not achieve the original performance level. Being able to prepare a small amount in the laboratory can already be regarded as a genius.

But fortunately, the research institute has preparation equipment that will look very crude in the future, but is relatively advanced now.

Generally speaking, the preparation of two-dimensional carbon-carbon composite materials needs to make the bottom carbon embryo first, and then undergo chemical vapor deposition or infiltration of pyrolytic carbon.

During this process, carbon source gases (such as CH4, C2H4, C3H6, C3H8, etc.) will be pyrolyzed and carbon will be deposited on the base carbon fiber cloth to fill the voids in the porous preform on the carbon fiber.

This step is mainly to densify the material, so that the material can obtain better densification.

The most critical part of this step is the CVI furnace, and it happens that there is such a device in the research institute, which was imported from abroad in order to explore high-performance carbon brazing materials.

According to his own memory, Zhang Xingyang placed the carbon fiber prefabricated body in the CVI furnace, then set the temperature in the furnace at 2100 degrees, and passed natural gas and carrier gas into the gas generator.

After waiting for a short while, Zhang Xingyang passed the mixed gas into the CVI furnace. Now is the critical time to decide on carbon-carbon composite materials. It is at this time whether composite materials that meet Zhang Xingyang's requirements can be prepared.

Zhang Xingyang glanced at the barometer on the mixed gas generator, and there was no difference between the inflow speed of the mixed gas and Zhang Xingyang's memory.

Next, the carbon fiber substrate needs to stay in the CVI furnace for 13 hours.

Zhang Xingyang called Su Xiao, a young researcher who used to work in this composite material laboratory, a little girl who had just come to the institute from the University of Aeronautics and Astronautics for an internship, a school girl who was a year younger than Zhang Xingyang.

"Xiao Su, please take a look at the CVI furnace. It is expected to take another 13 hours. If there is any problem, please come to my office to find me. When it is about to end, call me half an hour in advance."

Zhang Xingyang glanced at the watch in his hand, yawned and said.

As the person in charge of the new engine, Zhang Xingyang rarely rested every day during this period, and only kept four hours of sleep a day at most.

Every time at this time, Zhang Xingyang misses his genetically enhanced body in the 22nd century, which allows him to maintain a vigorous body without rest for 48 hours.

Zhang Xingyang yawned and left the laboratory after instructing Su Xiao on how to force the device to shut down after an emergency.

Zhang Xingyang walked to the door of the office a little drowsily, and found that Liang Yi was sitting in the office waiting for him.

Rubbing his cheeks that were stiff because he hadn't rested for a long time, Zhang Xingyang felt a little more refreshed, and asked:

"Uncle Liang, what happened?"

Liang Yi looked at the sloppy Zhang Xingyang who hadn't showered for several days, frowned and said:

"Xing Yang, don't worry too much about the institute's affairs, and we uncles are staring at you, you should also pay attention to your body!"

"Haha, it's okay, I'm still young, I can hold on!" Zhang Xingyang waved his hands while pouring water from the thermos on the table:

"Is this why Uncle Liang came back here?"

Zhang Xingyang handed Liang Yi a cup filled with warm water, sat down on the chair and stretched his waist that seemed to be rusting comfortably.

When Liang Yi heard the question, his brows relaxed, and the corners of his mouth slightly raised:

"There is good news. According to the investigation by the international insurance company, this accident has reached their damage standard."

Hearing such news, Zhang Xingyang, who was already tired and expressionless, became a little excited.

"That means the compensation will arrive soon?"

At this time, Liang Yi showed embarrassment, sighed and said:

"The insurance compensation process is not that simple. If you can get the money within this year, the insurance company will do it quickly."

Zhang Xingyang was puzzled and said, "Uncle Liang, our insurance amount this time is only 62 million U.S. dollars, which is only a small amount of money for the insured joint insurance company. Their annual profit exceeds two billion U.S. dollars. How could it take so long?"

Liang Yi looked at Zhang Xingyang, who really knew little about this, and said helplessly:

"Their argument is that there have been too many accidents in aerospace insurance recently, and the manpower is a bit tight, and we need to queue up."

"I'll go to his uncle, isn't this bullying us?!" Zhang Xingyang couldn't help cursing.

The other party's excuse is too bad. As a super large group whose business scope is globalized, how can it not even have this kind of manpower?

It is nothing more than bullying that your own family does not have aerospace insurance, so you can only listen to him. As long as it can delay you for one more day, the money will generate a lot of money in the bank.

"Uncle Liang, we must have our own aerospace insurance in the future." Zhang Xingyang said viciously.