Intelligent Industrial Empire

"Yun Fei, do you really want to invest in the Yanhuang Engine of the 810 Research Institute?" The next day, Yun Fei woke up in the afternoon. After lunch, Cheng Wei and Ma Fengshan both had serious faces. The ground is waiting for Yunfei in Yunfei's room.

In the morning, they had already seen the test data of the Yanhuang engine, and this result was far from what they had imagined.

Even if China is about to succeed in this regard, it has not been completely successful.

The ground test results are stable, but it does not mean that high-altitude platform tests and flight tests can achieve stable results.Especially the original experimental data here makes Ma Fengshan feel very heavy.The high-altitude bench test is not a flight test. During the two months of Yanhuang engine testing here, three samples were scrapped, and failures such as sudden flameout often occurred.

After the two told Yun Fei of these circumstances, they waited quietly for Yun Fei's decision.

"In this way, it is difficult for Yanhuang Engine to achieve success at all within a year?" Yun Fei's face also became very ugly.

“It’s not that it’s not impossible to succeed, but it’s very difficult. After the high-altitude platform test, you have to go through a longer flight experiment. During the flight, the working environment of the engine is far more complicated than that of the fixed-altitude platform. There will be more..." Cheng whispered through gritted teeth from time to time.

The ARJ-21 aircraft, they planned to be like the Yunshi aircraft, they just built a prototype for static pressure test, and the second prototype for flight test. After all, the calculation method of aircraft structure summarized by Ma Fengshan is definitely in this world The best calculation method is to reduce the sample cost to a minimum.

Several hundred million dollars can be saved here.

But it doesn't work anymore. The technical performance of the engine is not good, and the 10,000-hour long test is only a cumulative time, not an engine that has been tested for such a long time.

"Has the high-altitude platform test been completed in one thousand hours?" Yun Fei asked through gritted teeth.

"No, there are three in a row. The longest test time is the current one. It has been tested for 754 hours so far..." Cheng said, shaking his head from time to time.If they can complete the 1,000-hour high-altitude bench test, the performance of the engine will not change much, and they will not be so worried now.

"What are the reasons for the first three stations to be scrapped?" If things are really impossible, Yunfei must have a backup plan-to cooperate with the Ukrainians.

"The main reason is that the blades are broken. Some of the technology and process materials of the turbofan eight used by the Yanhuang engine have also been improved. However, practice has shown that the improved design of these engines has not been successful. Maybe they are engaged in mainline passenger aircraft engines. It's easier to build this kind of brand new small thrust engine, after all, there is the foundation of the turbofan eight..." Ma Fengshan sighed.

This is a flaw in the whole of China.

"Isn't their impeller production process adopting overall high temperature sintering and then performing overall forging?" Guocheng Blade Factory is a factory specializing in the production of this stuff.Yun Fei naturally knows these things.

"This kind of technology is used. According to the analysis, the main reason is that the pressure of the forging equipment is not enough, and the accuracy of the mechanical processing is also the problem. There are still some subtle differences in the fifth axis of the …" Hou Mingrui, who had just entered the door, said with an ugly face.

Yunfei was speechless.

The biggest problem is not the material, but the accuracy of the machining.

Things return to the five-axis machining center again, how can Yunfei not be depressed?

"How was the turbofan eight processed in the first place?" When I thought that the turbofan eight had already gone through 150 hours of airworthy flight, why did the turbofan eight not encounter these problems in the first place, but now Yanhuang has encountered it?

"The impellers of the turbofan eight were all processed by the former Soviet Union, instead of mechanical processing and subsequent surface treatment in our own country. After all, these were produced in the former Soviet Union using special machines. Now Lao Maozi produces engines and exports them to We in China are all these equipment left by the former Soviet Union. Our plan at the time was that if the turbofan eight succeeded, we could not get a high-performance machining center and put on a set of equipment dedicated to the production of turbofan engines..." Hou Mingrui Explaining to everyone.

The production of these precision equipment in the Soviet Union often adopted such special plane production methods.

Because such a production line is specially designed and developed for the production of a product with very high precision requirements, it is not only expensive, but also not flexible. After product adjustment, most of the entire production line is scrapped.

This is why the former Soviet Union was able to be dragged down because of a US space program.All the energy of the whole country has been devoted to these high-precision and cutting-edge heavy industrial production. There has never been enough energy and material investment related to the people's livelihood light industry. As a result, they can build the International Space Station and even prepare for the moon. The people in their country are living in a difficult situation.

After the father came to power, the relationship with the world became better, and the entire country was already poor, and the international situation was not as complicated as in the 1970s. Therefore, such a cost-intensive and inefficient production method naturally cannot continue.

Since then, China has been vigorously introducing CNC machine tools and CNC technology with lower production costs and higher production efficiency, instead of developing the special machine production model that has brought down the huge former Soviet Union.

"Then how did European and American countries do it before the emergence of the five-axis machining center?" Yun Fei was poisoned by the idea that materials are king.

"CNC machine tools were born because of the aviation industry. Moreover, after European and American countries had high-precision high-end CNC machine tools, the development of jet fighters and passenger aircraft began to accelerate. Materials and manufacturing complement each other..." Huang Qiaosong has a special say in this.

Although the materials in China are much worse than those in foreign countries, there is still no problem in manufacturing the most basic aero engines.

"In this case, pay 150 million to the 810 Institute. Director Hou, there is no problem with the money to produce a batch of test samples?" The five-axis machining center of Jiuyi Heavy Industry will soon be marketed. If there are still problems at that time, then Yunfei will give up this project without hesitation.

The loss is only 150 million yuan.

And if it succeeds, the benefits will naturally increase.

It is necessary to know that the price of an engine from Pratt & Whitney has exceeded 13 million yuan equivalent to RMB, and the sample production of Yanhuang engine is only 10 million yuan. The production cost of mass production of these engines will be reduced even more. low.

"No problem, absolutely no problem." Hou Mingrui didn't expect that Yun Fei, who was so stingy in Huang Qiaosong's mouth, would actually be 150 million in one mouth.You know, he thought Yun Fei would only give them tens of millions of funds at the beginning...

"Boy Yun, how about the processing of these turbines, turbofan disks and blades in the experimental workshop of your Jiuyi Research Institute? After all, your equipment is the best in the country, and the skills of the workers are basically the most advanced... Huang Qiaosong is accustomed to Yunfei’s advantages. When he hears that he wants to re-produce engine samples, if these businesses are given to Yunfei, whether it is the test workshop of the September 1st Research Institute or Xin Kaixing, it can save thousands of dollars. Ten thousand processing costs.

Especially Guocheng Yunfei's blade factory, which has general equity, is specialized in producing this stuff.

"No problem, but let's say it first. One yard goes to one yard. No research funding is allowed. Now that we have funding, we have to follow the market rules. Whether it is the production and processing in the test workshop of the September 1st Research Institute or Xinkaixing The impeller factory, I will directly deduct the processing fee from these research funds..." Yun Fei's words immediately made Huang Qiaosong seem to have been eating flies, and the smile on his face suddenly froze.

Yun Fei didn't care about his reaction, and he couldn't always be a good person, right?

I can’t owe my own account, right?The money was given anyway. If the 810 Institute is still engaged in the same way as the 132 Factory and the 611 Institute, it will be yourself that will ultimately suffer.

"Lao Ma, this thing is set. Anyway, our ARJ-21 final assembly will take about eight months. The first prototype used for static pressure experiments will be available first. Then if the domestic progress No, let's think of a way. We have it in our country. No matter how bad we are, we will not lose our dignity." After Huang Qiaosong and Hou Mingrui left, Ma Fengshan, who had always been gloomy, was about to say something, Yun Fei said directly. Blocked his words.

He really didn't want to be blackmailed by those foreigners anymore.

"In the United States, you have all seen how those grandchildren treat us. All this is because we don’t have any in our country. If we don’t lose the ten and the turbofan eight continues to invest in research, will we be discriminated against like that? Treat us like that? In front of foreigners, do we have the slightest dignity to talk about?" Yun Fei sighed, he just wanted to give a sigh of relief.

"Dignity is earned by yourself, not by spending money!" Ma Fengshan and Cheng Butime both agreed with Yun Fei's statement.

Especially Ma Fengshan, his time in the United States is not short.

Even though many Americans admire him very much, they disrespect him, because even if he has the highest talent in the entire world, in the eyes of those Americans, this talent is useless.