After tossing all night, it is completely unclear who was destroyed by whom and who was ravaged by whom.

Although Yun Fei was very entangled in this matter, and sighed that his only day of rest was far away from him, there was nothing awkward. This kind of thing, once you let it go, feels very normal. And Wang Zixin, as if nothing had happened.

At least, she didn't have to hold Yun Fei's arm as soon as she went out because of what happened last night, wishing that everyone would know what happened between her and Yun Fei.

Yun Fei was very surprised by this woman's appearance, and along the way to the 708 Research Institute, she was wondering if she should find a psychiatrist or neurologist to see if this woman had schizophrenia.

"Mr. Yun, this is the general map of the aerodynamic layout of the Yun 11 branch aircraft we are working on, can you take a look?" All the way to the research institute, it was almost noon, and Ma Fengshan and the others were not surprised that Yun Fei was late or something.

Anyway, Yun Fei came to the research institute, and it was just a formality.

"Isn't this thing the same as the Yun Ten that's parked outside? The only difference seems to be that you're a little fatter? Two engines? "If you want to talk about the layout of a certain system, or the assembly drawing of a certain part, Yun Fei will look difficult, but he can still understand this pneumatic layout drawing.

If he couldn't understand the outline drawings, he would really be in vain.

"Strictly speaking, this is an upgraded version of Yun 10. However, because of a lot of system changes, the original slender body has been shortened, and it looks a little fat...... As for the engine, it's a must, it's a bit too wasteful to use four or six engines, after all, this is a regional airliner......" Cheng explained to Yun Fei from time to time.

What they are most afraid of is that in case Yun Fei, the big boss of the investment, whimsically, he has to add a few more engines, saying that it will fly faster. The load of the plane is even greater or something, they have encountered such a strange leader before.

Airplanes are nothing else, and theoretically, the more engines there are, the faster the plane will fly and the more weight it will take-off. But this is just theory.

Not to mention anything else, it's just that there are too many countermotors, and the huge thrust generated, and the strength of the connection between the wings and the fuselage are unbearable.

The reason why fighter jets do not use transport planes to hang their engines on the wings of the aircraft is because they are faster in the air. The torque and force generated by various movements in high-speed flight can easily break the wings and tail of the aircraft, and it is a tragedy at that time.

After all, the tail and wings are connected to the entire aircraft by riveting.

At the beginning, it was also Yun Fei's fate, the first time he went to North Korea, the pilots of the former Soviet Union flew the transport plane as a fighter jet, and there was no problem, otherwise, Yun Fei would have to cross again.

So. After learning about the situation, the pilot who used the transport plane as a fighter was fired.

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

And a lot of research in China is understood by people who don't understand, because they have the whole story of life and death in their hands.

Cheng from time to time, of course, a few people are most afraid that Yun Fei doesn't know how to pretend to understand, and those leaders have to build something for them. That's when things get into trouble. Although Yun Fei emphasized last night that he would not interfere in any way with this project.

However, they knew from Ma Fengshan Pass that the design requirements of the ARJ21 civil airliner, the first regional aircraft model they made, were basically put forward by Yun Fei. Because this is the most needed regional jet for Yunfei at present.

Where do they know. These things proposed by Yun Fei are all various technical parameters of China's big aircraft.

This is also thanks to Yun Fei's ability to remember these things.

ARJ21 is the English abbreviation of the new generation of regional airliners in the 21st century. It is to obtain airworthiness certification and to reach the international market. This is a new regional airliner with a short and medium range turbofan engine of 70~90 seats, with four different capacities: basic, extended, freighter and business jet.

The engine is a CF34-10A engine produced by General Motors of the United States. The cruising Mach number is 0.78~0.80. It is available in two configurations: Standard Range (STD) and Extended Range (ER).

As a traverser, Yun Fei is best at taking other people's paths, leaving others with no way out.

This is no wonder of himself, the country has no plans in this regard so far, his own Jiuyi Airlines because of the rise of e-commerce and the logistics industry, Ding Junsheng led the purchasing group to Europe and the United States to purchase aircraft and was despised, this breath Yun Yun couldn't swallow, so when he learned that Qin Fei was going to embark on the big plane project by himself, he intervened.

He wants to produce his own planes and build them himself.

Different from the ARJ21, Yunfei's requirements for this aircraft are 90-120 seats.

Even without mainline planes, he was able to use these small planes to get around the country. Anyway, he values the freight market more than the civilian market. Due to the rise of the domestic air cargo market, Yun Fei even changed several Il-76s in his hands that cost a lot of money to transform into manned aircraft, and completely abandoned the air passenger market.

These planes 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 back then.

Air passenger transport is still losing money in China, and Yunfei is not directly engaged in air cargo, but it has also made Jiuyi Airlines make a lot of money.

This kind of aircraft is just an addition.

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

"It doesn't matter, I just need to see the prototype come out as much as I can." Yun Fei naturally knew what they were worried about.

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

Whatever is purchased domestically is not a problem, the key problem is procured abroad.

The biggest problem for them to engage in this project is the division of equity, not whether to start these projects or not. As long as the equity division is completed, there is only one voice to speak, and there is no problem in talking about anything.

"Does GM dare not sell it? This engine is not produced by them, and Antonov on the Ukrainian side is currently 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 buy their engines to obtain an airworthiness license from the United States...... Lu Kairen said with a frown.

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

With such a large order, it is impossible for GM to give up.

They will help China's commercial aircraft companies to tackle the government's problems, which is the real reason why China's airplane programs use GM's series of engines. Moreover, this kind of regional aircraft is not the mainstream aircraft that Yun Fei wants to make.

After all, the market price of this thing is only 30 million US dollars, which is equivalent to more than 200 million soft sister coins.

Yunfei's Jiuyi Airlines purchase, this price will be cheaper.

A huge order of three billion dollars, which is a can't be given up for any company.

"There is no need to consider these issues now, but aircraft engines can be considered in a few more countries, and if the Americans ask for a sky-high price, we will ignore him directly. Even if ARJ21 is not exported, our domestic market is sufficient. Our big plane is the big one! Yun Fei said with a smile.

"Mr. Yun, do you want to take a look at the various test project books or let us report to you?" Although the inspection work is a passing scene, it is still well done. After all, now this project is Yun Fei alone.

Regardless of whether the equity division can be implemented or not, the ARJ21 aircraft will undergo intensive prototype manufacturing after the overall aerodynamic layout is completed. And then there are the various trials.

The reason why other shareholders who did not join the project are anxious is because of such a thing, once the prototype of the ARJ21 project with an order is produced, it will be even more unfavorable for them.

"As for it. I don't know anything about airplanes, I just need to see airplanes and see airplanes that can fly! Yun Fei emphasized seriously.

Even so, Yun Fei was still taken by Ma Fengshan to various design studios for a walk until the evening. The revolving restaurant at the top of the Oriental Pearl Tower was directly chartered by them, just to reward these sunset design teams with an average age of more than 50.

These people are all people who have participated in the Yunshi project, otherwise, it would not be possible to start the production of prototypes so quickly.

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

In particular, the mainline airliner model named Y9101 is the aircraft with the general aerodynamic layout that Ma Fengshan showed Yun Fei at the beginning, which is a large aircraft with 178-220 seats, and this aircraft, Ma Fengshan, after demonstration, can fully achieve the first flight in 2005, and obtain the certification of the United States and Europe in 2007 and put it on the market.

This is a lot shorter than the ten-year cycle of the general country to engage in large aircraft projects, which is because of the C919 scheme used by Yunfei.

I don't know if the country wants to engage in this project, after conducting painstaking arguments to get things out, I found out that Yun Fei's plane has already appeared on the market, I don't know if they will cry.

Anyway, this has nothing to do with Yun Fei.

What he has to do is to go other people's way and make others have no way out, unless he is not a big boss and gives the other party a way to go. At least, he has left many companies with no way out along the way.

The most injured are VCD manufacturers like BBK, as well as companies like Huashu...... (To be continued......)

PS: Thank you for the big monthly pass of the four-eyed baby.