The next morning, Guo Wenchang and the military leaders went to the air force base to test-fly the Mirage 2,000 fighter jet, while Li Shuguang and Chief Engineer Gu came to the headquarters of Dassault Company to negotiate with its senior officials.

Today, Dassault Company carefully arranged a design application demonstration of Dassault CATIA software for the Chinese delegation.

It seems that Dassault still wants to complete this business. The most important thing is to promote CATIA to China and East Asia through this purchase of Shenyang Aircraft Co., Ltd. and open up the market. This will be beneficial to them without any harm, otherwise How could Dassault Systèmes become independent?

For this reason, the old Dassault also came to the scene today to witness the demonstration.

After Chief Engineer Gu and Li Shuguang arrived at Dassault Systems, they were arranged into a small conference room. In this conference room, there were several computers. Of course, these computers were not supercomputers, but very small computers. Close to PC.

The old Dassault said happily: "Dear guests, today we will demonstrate to you how our computer-aided design and manufacturing system works efficiently. Next, let one of the developers of the software, Dassault Systèmes, Deputy General Manager Mr. Albert, please give you a detailed introduction!"

A handsome young man in his thirties walked to the stage, opened the PPT, and said confidently: "Everyone, let me personally demonstrate and introduce our CATIA software. I want to see my Chinese colleagues. , you have already learned about our system, and you also know that our Mirage 2,000 fighter jets used this system in the design and manufacturing process. Here I will show you some data. This is after using CATIA software. , some of the effects achieved."

A data sheet is displayed on the projection. You can see the Dassault Mirage 2,000 fighter jets. After using CATIA software for design and manufacturing, its design cycle has been shortened by 50% compared to manual design. Most importantly, the error rate has been reduced. It has been greatly reduced. It can be said that even if something goes wrong, it is very fast to modify the drawings, including some calculation data.

In addition, when manufacturing parts, it is possible to achieve a lower error rate.

This also makes General Master Gu very excited. If this system is in place, then the design and development cycle of the J-8 II fighter jet will definitely be shortened significantly. This is the right time. If I hadn’t come, I really don’t know how many people in the world would be there. Such a good aircraft design software.

You must know that although domestic aircraft design institutes have developed some small design assistance software, they are only small-scale and play a very small role. They are usually developed by each design office or even the team themselves and are not systematic. , and cannot be promoted.

However, Dassault's design and manufacturing system is relatively complete. It can be said that Chief Engineer Gu is very excited. Of course, he also knows that the price offered by the French may not be too cheap, and I am afraid it will cost a lot of money. It takes effort to introduce it smoothly.

Now, whether it is Chief Engineer Gu or the leaders of the Ministry of Aviation Industry, they have very intuitively seen the gap in the design field between China's aviation industry and the European aviation powers.

Next, the young French designer began to demonstrate the functions of the software to everyone, especially when it came to the parametric surface modeling function, which was particularly surprising.

Although CAD drawing technology has been around as early as the 1960s, in the past ten years, CAD has only simple functions and can only draw two-dimensional plane drawings, so this technology has not been promoted on a large scale. Of course, there are

On the one hand, the reason is that computer applications have not yet been widely promoted.

In the 1960s, a French engineer proposed the Bezier curve, which is the basic tool for computer graphics image modeling. Graphics can be created and edited by controlling four points on the curve. With this curve and algorithm,

On this basis, Dassault Company developed the function of surface modeling. Of course, Dassault CATIA is still in its early development stage, so there are actually some functions that are not very perfect. Take this surface modeling as an example, it is relatively

Elementary.

So when this young engineer introduced surface modeling, he said very arrogantly: "There is no better surface modeling technology in the world than our Dassault CATIA. If there is, I think I don't have to do it."

Yes! I wonder if Chinese colleagues know better surface modeling technology or theory?"

This is really right. Li Shuguang couldn't help but think of some technologies and theories he knew in his previous life, and couldn't help but said: "Not necessarily, I do know a more advanced curve algorithm theory that can partially realize three-dimensional freedom.

Surface modeling."

Li Shuguang's speech immediately attracted the attention of everyone. Even the old Dassault was very surprised.

The young man on the stage said in disbelief: "Oh, please tell me about it!"

Li Shuguang smiled slightly and said: "I'm just talking theoretically!"

Next, Li Shuguang really gave an overview of this curve algorithm theory. If we have this set of curves, we can better model and complete the complex surface design of aircraft, ships, and automobiles.

For example, the wing-body fusion part of the third-generation aircraft has very complicated curves, and designs such as supercritical wings and DSI air inlets can all be used.

Now it seems that Chinese designers don’t know everything, and they even understand some advanced theories. This makes the people at Dassault can’t help but put away their contempt.

Chief Engineer Gu is very happy. This is obviously beneficial. It will play a very good role in the subsequent negotiations and will not allow Dassault to fool around and lead the way.

After the demonstration, the leaders of the aviation industry were very happy and said: "Today we would like to thank our colleagues from Dassault Company for demonstrating such an advanced computer-aided design system to us. It can be said that we have gained a lot from this visit. We

We very much hope that this system can be introduced into our country and play an important role not only in the aviation industry."

Dassault smiled and said: "Yes, your choice is very wise. With the help of our company, Dassault, your aviation industry will undergo major changes and make rapid progress. I will never lie."

There are a lot of details in the next negotiation, but overall it goes smoothly. Both parties have this willingness, so the price and conditions can be easily negotiated.

Of course, this cannot be settled in one day. Later in the afternoon, Li Shuguang and the others arrived at the air force base again, and the second test flight of the Mirage 2,000 fighter jet was about to begin.

This morning Guo Wenchang studied and flew a Mirage 2,000 fighter jet on the simulator. Unexpectedly, his learning speed also surprised the French test pilot. In just half a day, he became very proficient in flying on the simulator.<
Chapter completed!