After a night of tossing and turning, it's completely unclear who was devastated by who and who was ravaged by who.

Although Yun Fei is very tangled about this matter and regrets that his only day's rest time is far away from him, he is not uncomfortable. Once this kind of thing is put down, it feels very normal. And Wang Zixin, as if nothing had happened.

At least, she didn't have to hold Yunfei's arm as soon as she went out because of what happened last night. She wanted everyone to know what happened between her and Yunfei.

Yun Fei was surprised by the woman's performance. All the way to the 708 Institute, he was wondering whether to find a psychologist or neurologist to show her and see if the woman had schizophrenia.

"Mr. Yun, this is the general aerodynamic layout of the Yun 11 regional plane we are working on. Have a look?" All the way to the Institute, it was almost noon. Ma Fengshan and others were not surprised that Yun Fei was late.

Anyway, Yunfei's coming to the research institute is just a formality.

"Isn't this just like the Yun 11 parked outside? The only difference seems to be a little fat? Two engines? " If you want to say the layout drawing of a system or the assembly drawing of a component, the cloud does not look difficult, but he can still see the pneumatic layout drawing.

If he couldn't understand the outline drawings, he would have been fooling around in vain.

"Strictly speaking, this is the upgraded version of Yunshi. However, due to many system changes, the original slender body is shortened and looks a little fat... As for the engine, it is necessary. Using four or six engines is a bit too wasteful. After all, this is a regional airliner... "Cheng explained to Yun Fei from time to time.

What they fear most is that if Yunfei, the big boss of investment, is whimsical, they have to add a few more engines to say that it will fly faster and have a greater load capacity. They have met such wonderful leaders before.

Aircraft is nothing else. In theory, the more engines, the faster the aircraft will fly and the greater the takeoff weight. But this is just theory.

Not to mention anything else, just because there are too many anti motors, the huge thrust generated and the strength of the connection between the wings and the fuselage are unbearable.

The reason why fighters do not use transport aircraft to hang their engines on the wings of aircraft is that they are faster in the air. The torque and forces generated by various actions in high-speed flight can easily break the wings and tail wings of aircraft. It was a tragedy at that time.

After all, the tail and wing are connected with the whole aircraft by riveting.

At the beginning, Yun Fei was very lucky. When he went to North Korea for the first time, the pilots of the former Soviet Union flew the transport plane as a fighter, but there was no problem. Otherwise, Yun Fei would have to cross again.

Therefore, after knowing the situation, the pilot who used the transport plane as a fighter was fired.

In the thousands of meters of sky, that's no joke.

Many studies in China are guided by people who don't understand, because they have a complete collection of life and death of the project in their hands.

From time to time, of course, several people in Cheng are most afraid that Yun Fei pretends to understand and learns what the leaders have to advise them. At that time, things will be in trouble. Although Yun Fei emphasized last night, he will not interfere in this project.

But they know from Mafeng mountain pass that the design requirements of ARJ21 civil airliner, the first regional aircraft model they have made, are basically put forward by Yun Fei. Because this is the regional aircraft that Yunfei needs most at present.

Where do they know that these things put forward by Yun Fei are all technical parameters of China's large aircraft.

Thanks to Yunfei's ability to remember these things.

ARJ21 is the English abbreviation of the new generation of regional airliner in the 21st century. It takes a foreigner's name to obtain airworthiness certification and face the international market. This is a 70 ~ 90 seat medium and short range turbofan engine new regional airliner, with four different capacity models: basic, extended, cargo and business aircraft.

The engine is cf34-10a engine produced by general motors of the United States. The cruise Mach number is 0.78 ~ 0.80. It has two configurations: standard range (STD) and extended range (ER).

As a passer-by, Yunfei is best at taking other people's way and leaving others with no way to go.

It's no wonder that his own country has no plans in this regard up to now. Due to the rise of e-commerce and logistics industry, Ding Junsheng took the procurement team to Europe and the United States to purchase aircraft, which was despised. He couldn't swallow it. Therefore, when he learned that Qin Fei wanted to get on the big plane project by himself, he stepped in.

He wants to make his own plane.

Different from ARJ21, Yunfei requires 90-120 seats for this aircraft.

Even if there were no trunk planes, he could walk around the country with these small planes. Anyway, what he values most is the freight market, not the civil market. Due to the rise of the domestic air cargo market, Yunfei even changed several IL 76 aircraft in his hands, which cost a lot of money to be transformed into manned aircraft, and completely abandoned the air passenger transport market.

These aircraft did not obtain the airworthiness certification of the United States, otherwise it would not have been possible for ye Fei and others to get so many shares that year.

At present, air passenger transport is still at a loss in China. Instead of directly engaging in air cargo, cloud has also made a lot of money for 91 airlines.

This kind of plane is just an addition.

Anyway, the price of this kind of aircraft is not high. Yunfei's 91 Airlines needs one or two hundred.

"It doesn't matter. I just need to see the prototype as soon as possible." Clouds don't naturally know what they're worried about.

"But we have designed it. What if GM doesn't sell us engines? At that time, it would be troublesome if there was no engine... "Zheng Zuodi was most worried about these problems.

What is purchased at home is not a problem. The key problem is to purchase abroad.

The biggest problem for the cloud is the division of equity rather than whether to start these projects. As long as the equity division is completed, there is only one voice, and there is no problem talking about anything.

"Does GM dare not sell it? This engine is not produced by them alone. Antonov from Ukraine is now taking the initiative to talk to us! " Yun Fei said with a smile.

"The performance of Russian aircraft engines is good, but it is not easy to obtain the airworthiness license of the United States when buying their engines..." Lu Kairen said with a frown.

They don't have to worry about the license for this regional airliner project, because 91 airlines will be their first customer, and the intended order is at least 100.

GM can't give up such a big order.

They will help China's commercial aircraft companies tackle key problems with the government, which is the real reason why China's aircraft project adopts GM's series engines. Moreover, this regional aircraft is not the mainstream aircraft that Yunfei wants to make.

After all, the market price of this thing is only $30 million, equivalent to more than 200 million soft girls' dollars.

The price will be cheaper if Yunfei's 91 Airlines buy it.

The huge order of $3 billion is an irresistible for any company.

"These problems do not need to be considered now, but aircraft engines can be considered in several countries. If Americans ask too much, we will ignore them directly. Even if ARJ21 is not exported, our domestic market is enough. Our big plane is the big head! " Yun Fei said with a smile.

"Mr. Yun, would you like to read the test project books or let's report to you?" Although the inspection work is a formality, it is still good to do all this. After all, this project, that is, the cloud, is not invested by one person.

No matter whether the equity division can be implemented or not, ARJ21 aircraft will undergo intensive prototype manufacturing after the overall aerodynamic layout is completed. Then there are various experiments.

Other shareholders who have not joined the project are eager because of such things. Once the ARJ21 project prototype with orders is produced, it will be more unfavorable to them.

"As for you. I don't understand planes. I just want to see planes and see planes that can fly! " Yun Fei emphasized seriously.

Even so, Yun Fei was led by Ma Fengshan to walk around the design rooms until the evening. The revolving restaurant at the top of the Oriental Pearl Tower was directly wrapped up by them to reward these sunset design teams with an average age of over fifty.

These people are those who have participated in the Yunshi project. Otherwise, it is impossible to start the production of prototype so soon.

Regional airliners and trunk airliners are carried out at the same time.

In particular, the trunk airliner model named y9101 is the plane with the general pneumatic layout that Ma Fengshan showed Yun Fei at the beginning. It is a large plane with 178-220 seats. After demonstration, Ma Fengshan can fully realize the first flight in 2005, obtain the qualification certificates of the United States and Europe and put it on the market in 2007.

This is a lot shorter than the ten-year cycle of large aircraft projects in ordinary countries. This is because the cloud does not use the C919 scheme.

I don't know if the country wants to carry out this project and after hard demonstration, I find that Yunfei's aircraft has appeared in the market. I don't know if they will cry.

Anyway, this has nothing to do with Yunfei.

All he has to do is follow others' path and let others have no way to go, unless he says that the big boss gives them a way to go. At least, he has left many companies with no way to go.

The most injured are VCD manufacturers such as Bubugao and enterprises such as Huashu