Originally, I was going to continue to look at the other booths below, but suddenly five English letters appeared in Yang Hui's eyes: CATIA. What is this? Almost no one who does aerospace does not know this thing.

As one of the industrial applications of computer drawing in the computer age, its software has experienced from the early CAD two-dimensional computer drawing to three-dimensional drawing modeling software. The most famous in later generations are CAD, UG, Pro/E software, these three software with their unique advantages in the ordinary industrial design software famous, but their advantages to aerospace is not very useful.

Due to the needs of aerodynamics, especially in the general trend of wing-body fusion of third-generation aircraft, the products developed by aerospace have more curved surfaces, and most of them are composed of complex curved surfaces. This is where a common weakness of these software comes to the fore: the trouble of surface design anomalies.

As an aerospace manufacturing company, Dassault develops software that is naturally oriented to aerospace manufacturing, so it pays special attention to surface design, which makes other airlines purchase and use.

In the United States, CATIA is even more popular, Boeing 777 paperless design, from the pre-project stage, specific design, analysis, simulation, assembly to maintenance, all the industrial design process, electronic assembly is completed by CATIA assistance, which completely pushes CATIA to another brilliant and **.

Before Yang Huilai's report in 83, due to the further deepening of aerodynamics in automobiles, a large number of streamlined cars appeared, and the square cars in the past gradually decreased. As a result, CATIA has begun to invade the share of industrial design software in the automotive manufacturing field on a large scale. Its broad future is quite promising.

Now Yang Hui is standing in front of the CATIA booth, looking at the CATIA version 1 that is still quite simple, Yang Hui does not dare to underestimate it, in the future, this software will rule the office computers of major aircraft manufacturing enterprises, think about what the scene will be.

It's not that I feel the power of this soft armor, but I am worried about the safety of aviation manufacturing enterprises, after experiencing the 777 remote control incident, Yang Hui's attention to industrial software has almost reached a heart-pounding level.

It may still be barely usable now, but in the new Internet era, information security is particularly important. It's scary to think about the consequences of human control of important industrial manufacturing software. In the Houshi Republic, almost none of the local industrial design and manufacturing software has grown.

Now Yang Hui is vigilant, and he must find a way to design or support his own industrial design software, so that he can design safely, and no matter what, the nerve of security and confidentiality cannot be relaxed.

Although he is very wary of this software, it does not prevent Yang Hui from looking at this excellent software with an appreciative eye, if there is an opportunity, he still has to introduce this software, and this information is safe before the arrival of the new century. Only by understanding the true essence of this software can we prescribe the right medicine and make a domestic software suitable for the aerospace manufacturing industry.

Shaking his head and looking at this version 1 that is still based on the DOS system, Yang Hui himself doesn't quite understand it. When I came into contact with computer industrial design software in later generations, it was already a graphics operating system that began to be popularized on a large scale, and now I can look at it, if you want to use it proficiently, you have to learn the system first.

Looking at the directors again, they have run far away, Yang Hui can only sigh silently, it is not for nothing that the base is lagging behind several mainstream design institutes in China. Now 0611 has begun to use part of the computer-aided design with the help of J-7 (3); The J-7 also learned to use computer-aided design in the cooperation of West German MBB, and in the end, the J-7 won the crown of 'the first model to use computer-aided design to complete the course'.

Now Director Bai still doesn't care about computer-aided design, which is still too out of touch with foreign countries, computer simulation is the biggest breakthrough in mechanical design in the West after World War II, and we have not carried out effective communication, which has led to this situation now.

If you think about it carefully, you can't blame the director, after all, the director is just the director of an ordinary scientific research institute of the Republic, and he has not been to the West before this air show, which is normal.

Isn't it just that now I am broadening my horizons and looking at the world, the director has not paid attention to it, it is good that I have paid attention to it, it is all the same, and I can suggest it to the director when I need it in the future.

Keep up with the director in front, who is now standing in the engine booth in front of Snecma. Tilting his head and looking carefully at the proportional model of the M53, although the M53 has been criticized for its single-rotor problem, it is known as the last artifact of the single-rotor engine as the latest masterpiece of the French aero engine.

Its fuel consumption is high and the thrust is average, but the simple structure, coupled with the solid leather and high reliability, is still very interesting. Even Wu Lao is now taking the public promotional materials of the M53 and studying it carefully.

"Director, have you researched anything, this single-rotor engine still has something to see"

The director, who was still studying this model, heard Yang Hui's words, raised his head and opened his mouth to say something, but stopped to think about it before saying, "Let's go, let's continue to look at the others." ”

In this way, Wu Lao also put away the promotional materials and walked together, the promotional materials in the air show will not be sent out, but they will be sent out, and they can be taken away, and the data in them are some common data that can be collected casually. Otherwise, it will not be called promotional materials, but internal materials.

"Yang Hui, I just took a rough look at the model of the engine, this engine should have no future for development, Snecma has a worrying future, this is a technical fault, their twin-rotor engine technology is not very good."

Hearing this, Yang Hui was the reason why he wanted to stop talking just now, and his feelings were afraid of hitting Snecma's exhibitors. But the director is worried about this again, and the M88 of later generations can be regarded as a twin-rotor turbofan of the past.

"Director, I think too much about this, you think Knesma is a subsidiary of Safran, Safran is now cooperating with GM CFM56 is a twin-rotor engine, excellent performance, the core machine is excellent blood, original imports, that is a good thing from the United States."

Don't say much, they are all smart people, as soon as they heard Yang Hui say it, they knew what Yang Hui meant, and they all smiled slightly, looking like they understood.

Continue to the pavilion of other companies in front, there are European military enterprises along the way, if you want to see other companies, please go to another pavilion. At present, during the Cold War, European arms companies are still alive and well, and some have money to compete for Pavilion 1 of the Paris Air Show, and this must also be fought for.

Walk along the way to Hall 1. As soon as I walked out of the exhibition hall, an unexpected behemoth flew by at low altitude, which can be said to cover the sky, and everyone who was not in the exhibition hall looked up at the sky, what the hell is this.

Surprisingly, this big guy is a Boeing 747 plane flying at a low altitude, and the most surprising thing is that this guy actually tilted the fuselage slightly, so that people can see the real guy flying in this exhibition.

On the back of the 747 is another aircraft, but the huge rocket engine vent and unique aerodynamic shape behind this aircraft are enough to show that this is a new aircraft that has never been unveiled before.

No, it goes beyond the realm of flying machines. Others may not know what this flying machine is, but Yang Hui can see at a glance what this 747 is carrying on its back.

This is a major innovation in US space technology since the "Saturn 5": the Space Shuttle Enterprise.

Now this top-secret plan has finally been made public, due to the special nature of the space shuttle, rocket boost, external storage fuel tanks, etc., the operation is very complicated and costly. The Americans are also in the spirit of how bold people are and how productive the land is, and use the 747 to carry the enterprise into the market.

As for this and discord, it is not safe, the sea trial instructions and safety regulations are all on the sidelines, and the United States, as the boss of the Western world, will bring its new toys to give you a cheer for your French brother.

Prior notice? Regardless of your prior notice. Today, Big Brother is here to show new toys to countries around the world, and I want to inform you of something.

As for the question of whether it is appropriate for the space shuttle to appear at this commercial air show, the Americans, of course, say, "Which of you can afford it?" Besides, I didn't plan to sell it, I just pulled it out and made a bend for fear of rust. ”