"As both a brother unit who studies large aircraft, your words are so hurtful." Sun Daogan was extremely dissatisfied with Zheng Yucheng's words.

Even if you know, don't say it out.

"We can rent a factory from you." Xie Kai proposed the solution, "the facilities and other facilities used are invested and built by you."

Qin Fei wants funds, and a small amount of funds will make the cooperation between the two sides more pleasant, so there is no need to be too stingy.

A special production workshop is built, which does not require land costs in 404, and the transportation costs of various materials are even higher.

There is no matching package around.

Qinfei is a factory that can provide supporting facilities for all parts of the aircraft.

Yunshi is different, and does not have its own special production factory. The entire aircraft project is a system integration of more than 30 research institutes in aviation systems, more than 20 aviation engine-related units, and more than 200 aviation enterprises.

Yun Ten is far more complex than Yun Eight and has a higher technical content.

"We need to discuss this matter and report it to our superiors for approval." Sun Daogan was in an official voice.

Zheng Yucheng was extremely dissatisfied with his official accent, "This matter does not require approval from the superiors at all. You can decide what you want to cooperate. If you want to cooperate, you can give me a happy word."

This matter does not require approval from the superior.

The military is short of funds, and the limited funds are focused on the most core technical projects first, and the autonomous rights of the following units are delegated a lot.

Many units are exploring the path to making money.

For a moment, Sun Daogan was a little embarrassed and didn't know how to answer.

"Director Zheng, such cooperation is a big deal. After all, we are a military-industrial unit..." Su Xingguo quickly rescued the siege.

"It seems that we are not military-industrial units. They are all military-affiliated units. I don't believe that the superior chief will stop the cooperation of brother units!" Zheng Yucheng was aggressive.

Yun Shi must find a place to stay.

McDonald is about to enter the market, and the Yun-10 production line must find a place to make room for McDonald.

What's more, there are many key experiments that have not been done in Yun Ten.

Qin Fei has complete supporting facilities and is able to provide conditions for doing the ten key experiments of the luck.

This is the result of Ma Fengshan and Cheng from time to time inspection.

"Old Zheng, let's discuss this matter again." Sun Daogan, like Zheng Yucheng, was worried. Yunshi borrowed their factory buildings, R&D teams, etc., and did not occupy the magpie's nest at that time, which would affect the development of Yunshi.

"..." Zheng Yucheng was about to say something, but Xie Kai stopped him.

"Let's consider it first when they want to think about it." Xie Kai said.

Zheng Yucheng, Ma Fengshan and others didn't understand his thoughts.

After returning to Qin Fei's guesthouse, the group sat in the conference room of the guesthouse to discuss cooperation with Qin Fei.

"Mr. Ma, does Qin Fei know the specific work of our Yun-10 team after entering their place?" Xie Kai knew that everyone was confused and did not explain directly.

They are worried that cooperation will affect Yun 10, while Qin Fei's people are worried that cooperation will affect Yun 8.

The output of Yunba has always been an unsolvable problem.

"We only said it was a design modification work, and we did not say that our further work was to replace the materials comprehensively, redesign the entire aircraft, and fill in a large number of unfinished experiments..." Ma Fengshan felt a little embarrassed when he said this.

Only the project team and a few people know about the problem of Yun-10.

In recent days, the frequent take-off and drop of Yunshi has made them increasingly worried.

The main structural parts of foreign civil aviation aircraft are mainly forged and pressed and formed by special aluminum alloy 7075. There is no aluminum alloy with equivalent performance in China, so it can only be used on the LC4 of military aircraft.

This aluminum alloy is prone to cracking, and has fast crack propagation, poor corrosion resistance, and is not resistant to fatigue.

This problem is frequently exposed during production trial production and test flight.

Not to mention the problem of using small skins to splice the overall large skins, and welding the overall forgings with small pieces of forgings.

The most critical test of the overall structure fatigue intensity of the Yunshen flying in the sky was not done.

Although the whole team is flying everywhere around the country, the hearts of the entire team are becoming more and more nervous as the flight time accumulates rapidly.

Yun-10, this large aircraft project that should have been dismounted, has not conducted fatigue life experiments, and while ensuring safety, it is conservatively estimated that the flight life is only 200 hours!

Yes, only two hundred hours.

Before 404 took over, it had already flew 177 hours. After taking over several large-range flights, the flight time reached 201.5 hours after this flight last night.

If you continue to fly, no one dares to let it fly without perfect preparations.

The Yunshi design team knows this, and the core management of 404 is also clear about this.

Qin Fei didn't know that they thought that after the Yunshen team came in, they would carry out small batch production.

"They tested it many times and asked about our production quantity." Cheng said with a wry smile.

"How many aircraft with a service life of 200 hours can we produce?" Zheng Yucheng's mouth twitched.

Today, the flight time of Yunshi's 10 is more than two hundred hours, and his heart is hanging.

It was not until the plane landed that I let go of my hanging heart.

If he had a choice, he really didn't want to take a special plane like Yunshen.

He even hated Ma Fengshan for why he was so cruel. He told him that the service life of Yunshi is conservatively estimated to be only 200 hours.

Ma Fengshan and Cheng looked embarrassed from time to time. They wanted to say that 200 hours were just a conservative estimate, but in the end they didn't say anything.

"In the past few days, a comprehensive inspection of Y10 will be carried out, and the parts that should be replaced will be replaced. The crew members and the technical support team must ensure safety." Xie Kai did not say whether to ensure the safety of the aircraft or the safety of personnel.

"As long as there are any hidden dangers, we will not let it take off." Cheng nodded from time to time and said.

They know the catastrophic consequences that will be caused by the plane crash in the sky.

Where can the military, which is so poor that it can afford a plane with a flight life of two hundred hours?

Even the military will not want an early warning aircraft.

"We just need to know this. Foreign countries do not restrict domestic procurement of civilian 7075 aviation aluminum. All the next batch of manufacturing uses imported 7075 aviation aluminum." Xie Kai said to Ma Fengshan and others. "The money you should pay must not be reduced!"

"Where is the overall structural part?" Cheng asked from time to time.

Many key equipment are not available in China.

For example, a large press of more than 50,000 tons.

"The largest die forging machine in China is the 30,000-ton die forging machine that was put into production in the Southwest Aluminum Factory in 1973. Our main structural parts require at least 50,000 tons of die forging machine. If we want to continue to develop, we must have a larger tonnage die forging machine, which costs at least 65,000 tons..." Ma Fengshan looked at Zheng Yucheng and said, "If the funds are sufficient, perhaps we can purchase a large die forging machine of 65,000 tons from the Soviet Union."

"Since this thing is so critical, let's buy one." Zheng Yucheng said casually.

Xie Kai immediately jumped up, "Don't even think about it!"

The old guy really dares to say it.

A 65,000-ton die forging machine, the price of each is hundreds of millions of dollars!

The entire 404 base sold all the assets, but I couldn't buy one.

"Isn't it just a machine? Why are you doing such a big reaction?" Zheng Yucheng couldn't understand why Xie Kai reacted so fiercely.

Ma Fengshan had no hope at all and had been paying attention to Xie Kai's reaction.

"In order to provide Airbus with qualified key structural parts, French aircraft accessories manufacturer Ad ordered a 65,000-ton multi-directional die forging hydraulic press from the Soviet New Cramato Heavy Machinery Factory in 1976. I don't know what the additional conditions are, but the price exceeds 200 million US dollars..." Xie Kai knew that Zheng Yucheng was not sure about the price of this thing.

"What? A machine is worth 200 million US dollars? Or is it in 1976?" Zheng Yucheng stood up in fear.

In his perception, a machine can only cost millions of dollars.

Xie Kai does not despise Zheng Yucheng.

The 404 base has not had any aerospace-related projects before. Even if there are one, Zheng Yucheng didn't need to solve it. It is understandable that the most critical equipment in the aerospace industry is the large compressor.

"What do you think?" Xie Kai looked at Zheng Yucheng, "Even if we sold our 404, we can't afford it. The whole world, it is estimated that there will be no more than 40 units..."

Zheng Yucheng was a little embarrassed.

Even if the Soviet Union was willing to sell, they really couldn't afford it.

"In fact, our Yun-Ten aircraft, a large 45,000-ton press can meet the requirements." Cheng took a step back and said.

They hope that 404 can get a set of such a large press back.

"Don't think about it, we don't have the funds to build these equipment for the time being. Even if it's 45,000 tons, it will have to be hundreds of millions of dollars. It depends on whether they are willing to sell it." Xie Kai shook his head and dispelled their thoughts.

If sufficient funds are available, you can consider introducing a large press.

Don't think about it now.

Xie Kai was extremely unlucky in his era. China had three die forging machines of more than 80,000 tons and two free forging presses in the world, one of which was a private unit...

Huaqing University even has a complete set of drawings for 160,000 tons of die forging machines, and construction can be started as long as needed.

"Now our relationship with Europe and the United States is not very good now? The relationship with the Soviet Union has also improved greatly. Please contact relevant departments to contact countries with these forging machines to see if they are willing to help us make these things!" In order to change the problem of Yunshi's safe service life of only 200 hours, large structural parts must be solved.

It cannot be provided by domestic companies, so they can only use their relationship with foreign countries to find ways to help them create.

"When we have money, we will find a way to get one out." Zheng Yucheng comforted Ma Fengshan and others.

Now he can't afford it and is short of money.

If you have money in the future, if you don’t sell it abroad, you will find someone to design it yourself.

Zheng Yucheng remembered that there was such a thing in this world for the first time.

"First carry out the modification design, this work cannot be stopped. If Qin Fei does not cooperate, we will look for Cheng Fei. Although they are not a large-scale aircraft, they are better than rebuilding us." Xie Kai said gritting his teeth.
Chapter completed!