Chapter 911

Seeing baozixuan sitting next to him, old William immediately had an idea. If we can put more things on this boy, McDonnell Douglas won't suffer even if the two don't cooperate in the future.

Baozixuan has such a clear understanding of the fourth generation fighter. If heiyun has not carried out relevant research and development, it will certainly not be convincing. McDonnell Douglas is still at the theoretical stage for the fourth generation fighter, and some ideas and suggestions on black cloud will certainly take the lead in the future R & D process.

At least it won't be a loss to communicate with such people, and old William didn't continue to drink. First, I'm old. Second, I know how much I drink. Although I don't have much contact with Bao Zixuan, I also know that the boy's drinking capacity is amazing.

William Wales Douglas smiled and said, "how about we design a fourth generation machine here as an entertainment."

What does old William mean? Do you drink too much, but it doesn't look like it!

In fact, old William didn't drink much at this time, and he was still very sober. At such an age, drinking won't delay things. That's what young people do.

Just heard baozixuan's definition of the fourth generation fighter, the previous little wine was gone. This is a good opportunity. Old William is very cunning. He can't just hear the definition. He must see the shape of the fourth generation fighter of black cloud.

Unlike civil aircraft, McDonnell Douglas cannot cooperate with black cloud. First of all, the Ministry of defense will not agree. It must be developed independently, and the core technology cannot be mastered by companies outside the United States. So the problem is, what if there is no relevant technical reserve? Should we start from scratch.

That will not only waste a lot of time, but also have no way to start. There was no concept before, everything needs to be tested constantly.

If we can dig out more things from heiyun group and baozixuan, we will be able to design the fourth generation fighter in the future. Although the motivation is not pure, as long as we can get the results, who cares about others!

Bao Zixuan: "since senior William is so interested, it will be regarded as an entertainment."

"It's up to you to decide whether to use computer or hand-painted."

Hearing Bao Zixuan talking about using computers, William Wales Douglas felt very strange. Can we still use computers to design aircraft sketches? Today it's just time to verify them.

Old William: "I can draw by hand, but I still want to try new things; Can the computer meet the requirements? "

The elderly who have been engaged in aircraft R & D since World War II still believe in tradition.

Bao Zixuan smiled and said, "as long as it is what William senior wants to express, the computer can do it. Of course, it is only limited to the design drawings, and other aspects may not work. "

Hearing that computers can do so much work, old William was immediately interested. So he smiled and said, "then try it with the computer to see if it's as magical as you said."

Steamed stuffed bun Xuan made a gesture, and the bodyguard immediately took out the laptop.

Debbie Dickinson took action before the staff started. Clean up the table so that baozixuan can put his laptop on.

Both men looked at the woman who was just serving nearby and didn't say a word. Steamed stuffed bun Xuan didn't expect a model to do so. It seems that he really underestimated the beauty in front of him.

After turning on the computer, Bao Shoufu casually ordered a few times. A fighter model is presented. Although it is only a sketch, the outline is already very clear.

This makes Debbie Dickinson feel very magical, not only beautiful models, but also old William as a professional. It turned out that the computer designed the plane so fast that he needed to draw the sketch for half an hour. It seems that many ideas need to change, otherwise they will never keep up with the development of black cloud.

At that time, let alone surpass the black cloud. It's difficult not to be separated.

Bao Zixuan said with a smile, "this is a software developed by heiyun. Most aircraft in the world have technical parameters and shapes. As long as we want it, we can easily tune it out from the database. However, this computer is not linked to the central computer cluster and can only be used as a stand-alone computer at present. Therefore, the ability is limited, but it can also meet the requirements of senior students. "

I heard that the black cloud database already has the data of most models in the world, and engineers can call it out at any time. Old William was shocked again. He had led McDonnell Douglas and even American aircraft manufacturing companies in terms of work efficiency alone.

At present, major aircraft manufacturing enterprises in the United States still use manual drawing. Xiangjiang company in the industrial desert actually uses computer graphics. You know, the computer was invented by Americans, but now it is carried forward in the hands of Xiangjiang people. This is simply an irony. Major American universities, scientific research structures and high-tech companies should really reflect on it.

Old William: "as you said, the nose should adopt diamond structure. The circular radar reflector is too large, which is not conducive to stealth. "

After saying that, I saw baozixuan operating on the computer. The three were stunned; At this time, not only Debbie Dickinson and old William, but also Janice Dickinson joined the small circle after taking good care of little MacDonald.

Baozixuan's hand speed is so fast that several people can't see clearly.

In less than a minute, the diamond nose has been designed.

See so quickly, and there is no trace of the previous image. Old William felt incredible that McDonnell Douglas must get this software and pay a price.

But now is not the time. First, we need to make a comprehensive understanding of the specific performance of the software and make a decision.

Old William: "the fuselage should adopt flat integration, while the wing adopts diamond structure; And use a tilted tail. "

At the request of old William, baozixuan manipulated the computer again.

After a while, according to the requirements of old William, the basic model of the aircraft has been designed.

After that, they began to build the aircraft around the details and began to continuously improve the structure and function of the whole aircraft.

Seeing a plane designed like this, the Dickinson sisters began to see little stars in their eyes. It turned out that Polytechnic men were so charming that they were really ignorant before.

When the basic details of the aircraft have been built, the aircraft is displayed on the computer screen.

After seeing the plane, baozixuan remembered a classic model that had not been in service in his previous life - yf23; Black widow.

Yf-23 fighter, nicknamed black widow, is a test fighter model jointly designed by Northrop and McDonnell Douglas in the 1990s to bid for the Advanced Tactical Fighter (ATF) contract. Later, because the US Air Force announced that the YF-22 was the winner. Yf-23 fighter has produced only two prototypes, and they are no longer flying.

The first prototype of the previous yf-23 left the factory on June 23, 1990 and conducted its first test flight on August 27. The first YF-22 will not leave the factory until August 29; The first test flight was conducted on September 29. On the 5th test flight on September 18, yf-23 achieved a supersonic cruise record of Mach 1.43 without afterburner, while YF-22 reached Mach 1.58 on November 3. The second prototype of yf-23 was delivered on September 29; The two prototypes use different engines: the first prototype uses Pratt & Whitney yf119, and the second prototype is Ge yf120, which is just upside down with YF-22.

The design concept of yf-23 prototype is very different from that of YF-22. In addition to using many existing components, the flight test plan of yf-23 does not include the test firing of air-to-air missile and the verification of high angle of attack flight capability. Most of the data are collected and verified by wind tunnel test. According to the test results, yf-23 has no angle of attack limit, and the aircraft can easily resume stable flight from any spiral. It will be difficult only when the missile cabin door is open.

Yf-23 conducted a total of 50 flight tests for 65 hours. The maximum flight speed reached Mach 1.5, the maximum load reached 7g and the maximum angle of attack reached 25 degrees.

Compared with YF-22, yf-23 has a longer fuselage. It adopts a single wing. The front and rear edges of the wing sweep back and forward 40 degrees respectively, similar to a diamond. There is no horizontal control plane behind the fuselage, and two vertical control planes inclined outward by 50 degrees are used to replace them.

The air inlet is located below the fuselage near the leading edge of the wing. Both the air inlet and the air inlet adopt fixed structure and have no movable part, which can not only reduce the weight, but also avoid increasing the front radar reflection cross-sectional area. The air inlet bends upward inside the fuselage and is connected with the engine on the back of the aircraft. The nozzle is located in the middle of the outward inclined vertical control surface. The nozzle can not be seen directly from the rear and lower, which reduces the intensity of the infrared signal and limits the feasibility of installing the vector nozzle.

It seems that old William must have participated in the design of yf-23 in his previous life, otherwise it would be impossible to design the aircraft like this. Only because the performance is too advanced, or to balance the needs, it finally lost the election. It may be a pity, which is why the old man is not widely known.