Chapter 912

McDonnell Douglas had been acquired by Boeing, at least the signs were very obvious. The loss of military orders has little impact on Boeing. The Lockheed Martin company will have to go bankrupt if it can lose the order of the fourth generation of us fighters. In order to maintain the strategic balance, YF-22 finally won the bidding.

However, in the eyes of most people, yf-23 is a rare classic. Since we have a chance, we must produce him. This fighter is more like a product eliminated to maintain a certain balance, which has nothing to do with its own technical strength and combat performance.

In just one hour, the basic framework of a fourth generation machine was developed. What is the speed? It will take McDonnell Douglas at least more than a month to reach this level before R & D. It also needs to cooperate well in various departments and the designer's inspiration is bursting.

Computer design of aircraft is bound to be the development trend in the future. Black cloud has obviously come to the front, and can take advantage of other aircraft manufacturing enterprises in the United States.

Bao Zixuan smiled and said, "senior William, do you want to conduct wind tunnel test on the aircraft and then conduct flight test."

Can we simulate wind test and flight control test in the computer. What kind of operation is this? It's unimaginable and unprecedented.

William Welsh Douglas said in surprise: "wind tunnel tests can be done in computers and simulate takeoff. The computer has developed to such a point that it seems that it was really watching the sky before. McDonnell Douglas, including the American automobile industry, has lagged behind the United States. "

Bao Zixuan: "this laptop in my hand is a special customized version, which can be said to be the best laptop in the world at present. The cost alone has exceeded $1 million. If you can't even do simple simulation wind tunnel test and take-off test, it's too bad. "

Hearing that a small laptop cost $1 million, the three people on the scene felt that they had heard wrong. Is this computer made of gold, but it doesn't look like it!

At this time, Debbie Dickinson finally understood what her sister said that the money they made was nothing in the eyes of the super tycoon. One year's money is only enough to sell a laptop, and it's still when two people don't eat or drink. This is the gap, a gap that cannot be crossed at all.

Bao Shoufu's laptop is specially customized by heiyun laboratory; Chip, screen and software optimization have been strengthened. Of course, there are some exaggerations, even if the computer performance is advanced. But after all, it's just a small notebook, which can do some simple tests at most. If you want to complete the comprehensive test, you must also link to the central computer cluster to mobilize computing power.

But even so, it's a little scary.

Steamed stuffed bun Xuan began to operate on the computer, and old William stared at the screen. The aircraft soon appeared in the wind tunnel, and the simulated wind tunnel was almost the same as the real wind tunnel.

When the wind tunnel test began, the Dickinson sisters only felt very funny. Old William is an expert. He can see at a glance that although there are some gaps with the real wind tunnel test, it will not affect the overall situation. It's like watching the video of wind tunnel test. The computer is so magical.

The first test was completed quickly, and the computer immediately gave those unreasonable designs, which were listed very clearly.

Bao Zixuan smiled and said, "some aspects of wind tunnel test are not very reasonable. Should we improve it?"

Old William also felt that although the plane was very good, it was not perfect. Could computer simulation really detect it. So he immediately replied, "my younger brother, this computer is so magical. Let me broaden my horizons."

Although the Dickinson sisters watched the excitement, they were shocked enough today. There are so many unknown things in the world. At this time, looking at baozixuan is full of small stars. It may have been because of each other's wealth before, but now it is completely because of talent.

This is a real man. Even if he can't get the favor of baozixuan, he has to find a talented Polytechnic man to marry. At this time, Debbie Dickinson actually had this idea, which shows the invisible change brought by Bao Shoufu.

According to the opinions given by the computer, baozixuan began to modify the aircraft shape design; After a while, it was revised.

Seeing the revised design drawing, old William was very satisfied; At least more aerodynamic than before.

After that, the second wind tunnel test was carried out, and the computer soon gave modification suggestions. In this way, over and over again, soon a fighter plane that old William was very satisfied with appeared in front of him.

Many simulated wind tunnel tests are closely related to computer performance. The computing speed of notebook computer is limited, so it is difficult to complete such a huge amount of computing at one time.

In addition, the plane still has a lot of room to modify, but the laptop can't calculate it. You need to go back to the black cloud headquarters with the help of the computing power of the central computer cluster.

But even so, old William was very surprised. What is this operation? Computers can actually complete human work for months or even longer.

This is just a laptop, if you use an industrial computer. It's hard to imagine what the plane would be like.

The biggest headache of aircraft development is wind tunnel testing, and modeling often takes several months. After that, it needs continuous improvement, which wastes a lot of human, material and financial resources. Now baozixuan can do it with a computer. The development of the times is really too fast.

The Dickinson sisters also felt that the plane was really beautiful, more beautiful than any plane they had ever seen.

In fact, there is a common saying in the aviation industry that the more beautiful the aircraft is, the more scientific the aerodynamic layout is; This is also the main reason why the appearance of aircraft is more and more in line with people's aesthetics.

Looking at the computer screen, old William said excitedly, "this is the plane in my mind, this is the plane in my mind."

The plane designed by two people together conforms to the principle of aerodynamics from the appearance. If advanced auxiliary equipment is added, it will certainly become a star fighter.

The Dickinson sisters did not understand why the old man was so excited at once. Isn't it a beautiful plane sketch, as for this!

It seems that he still doesn't understand the industry. Old William is not an easily excited person. If you want to be with men of science and technology, you really need to know them from all aspects.

Bao Zixuan: "wind tunnel test is basically in contact. If you want to make detailed modifications. You need to go back to the black cloud headquarters and transfer the computing power of the central computer. Although it's not perfect, it's good that it's basically enough. "

"Next, let the plane test fly and see how the performance is."

Although old William was a little distracted, he still reacted quickly; Quickly nodded.

Bao Zixuan smiled and said, "then next, we will install two f404-ge-400 engines produced by general motors to see how the effect is."

Hearing this, old William was a little embarrassed. He was familiar with f404-ge-400 engine.

F404-ge-400 low bypass ratio turbofan engine has a single afterburner thrust of 7200kg, an engine weight of 983kg and a thrust weight ratio of 7.4. The air inlet adopts a fixed inclined plate design and is located on both sides of the fuselage under the wing root.

The aircraft can carry 4990 kg of fuel inside, and can also hang three auxiliary fuel tanks. The total fuel capacity of the aircraft can reach 7979 kg. A stowable aerial refueling pipe is also installed above the right side of the head. F404 is a low bypass ratio turbofan with a bypass ratio of 0.34. The engine has a three-stage titanium alloy fan, a row of fixed inlet guide vanes and a row of variable guide vanes, a seven stage compressor, the first three stages are variable blade stators, and finally a single-stage high and low pressure turbine. F404 engine has simple structure and relatively few moving parts. The engine has good compressor stall characteristics at high angle of attack. Even if it stalls occasionally, it can recover quickly by re ignition of the engine and afterburner. The engine responds quickly and takes only 4 seconds from idle to full afterburner.

Old William can clearly recite the data about f404-ge-400 engine. Because it was specially designed by general motors for McDonnell Douglas's flagship product F-18 bumblebee.

Baozixuan computer has the data of the engine. Is it that there is a commercial spy inside McDonnell Douglas? This possibility cannot be ruled out.

Bao Shoufu didn't know his joke, which made the whole McDonnell Douglas company jump. Partners are right, but you can't steal the company's confidential information. This is a matter of principle. McDonnell Douglas is not so easy to bully.

But at this time, old William would not show anything. He could only say with a bitter smile, "okay! Look at the performance of the aircraft with the engine. "

Baozixuan began to implant parameters into the aircraft engine. In fact, these were not leaked by McDonnell Douglas or general motors. As an engine engineer in a previous life, I still knew the basic data of competitors' products very well.

Seeing the boy's clear input data in front of him, old William doubted that there must be a serious problem in McDonnell Douglas or GM. Otherwise, baozixuan could not be so skilled and accurately input this confidential value.

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