Others may not feel that much in this regard, but Djokovic and other executives and experts in the Russian aviation industry do.

In particular, Djokovic, deputy chief designer from the Tupolev Design Bureau, was responsible for the development of the Tu-204 airliner before the collapse of the Soviet Union.

The original plan was to apply a new generation of turbofan engines produced in the Soviet Union with a large bypass ratio on the Tu-204.

Don't have modern 3D industrial design software?

At that time, Djokovic didn't pay attention to it at all, what was wrong, he couldn't live without it? When the Germans were forced under the city of Moscow, the factories couldn't even light kerosene lamps, didn't they still build weapons with their hands, and finally drowned the Germans in their nests along with their evil ideas against humanity.

Because of this, Djokovic, the head of the iron, did not believe in evil at all, and there were so many well-educated engineers and draftsmen in the Soviet Union who could draw one stroke at a time even without those imperialist software.

So this painting ...... It was painted until the collapse of the Soviet Union.

Djokovic only woke up from a dream at this time, and it turned out that once there was a generation gap, there were things that could really not be filled by manpower.

In fact, it is true that drawing design, and even the original computer graphic design, are two-dimensional design, and general things can be handled, and slightly more complex mechanical analysis, structural settlement, and finite element analysis cannot be displayed.

If you can't see it, don't mention how to solve it.

It is precisely because of this problem that the United States took the lead in developing three-dimensional industrial design software, which was initially applied in the field of nuclear weapons research and aerospace, and achieved good results, and then was adopted by major industrial giants, and soon developed the second and third generation of three-dimensional design software on this basis.

Among them, the third-generation 3D industrial design software developed by Loma Company is the application of VR holographic projection technology, combined with higher-level algorithms and large-scale computers, so that complex surfaces and difficult sections that cannot be displayed in the past can be fully displayed.

These things are obviously not attainable by the calculations of a large number of engineers and the drawing of drawings by draftsmen.

Even if you can barely get the style of the theoretical design, the fan blades of the turbofan engine can be made?

It is obviously naïve to have such an idea, in addition to the shape, the material, the structure, the level of force and so on the threshold waiting in front of it.

If this were not the case, the fan blade technology of the turbofan engine would not have become one of the core technologies of the turbofan engine with a large bypass ratio and high thrust.

Regardless of other things, it is not enough for ordinary materials and structures to withstand the impact of birds.

The impact of a 0.8-kilogram bird at extremely high relative velocity is equivalent to the full force of an ordinary family car at high speed.

Under such conditions, the fan blades of a turbofan engine less than 1.5 cm thick must be structurally intact.

This is equivalent to saying that a Passat hit a small board less than 1.5 centimeters thick at high speed, and as a result, the Passat's A-pillar and B-pillar were all destroyed, and the car was completely scrapped, and the thin board was not troubled.

Thinking of this extent, not to mention the general aluminum alloy and steel, even the ordinary titanium alloy can't do it, that's all, the key is that the quality of this kind of fan parts must also be strictly controlled, after all, it is something on an aero engine, and it will affect the performance if it is too heavy.

Light weight, high structural strength, durability front, corrosion resistance, easy maintenance......

and so on, and so on, and the rhythm of driving aeronautical engineers crazy.

Others don't know, but Djokovic, who wants to make the Tu-204 equipped with a large turbofan engine made in the Soviet Union, is really going crazy.

Djokovic, who couldn't get it out behind closed doors and was ruthlessly slapped in the face, finally used the traditional art of the Soviet era, brought other people's products to see if he could copy them, and spent a lot of money to get three or four different types of large-bypass turbofan engines from Europe and the United States.

There's no way, it's really the complex structure in European and American blades, they really can't do it.

Because it is a new type of hollow support structure that is significantly different from the third-generation honeycomb blade structure, the force is more uniform, the structure is reasonable, and the most important thing is that the fan blades with this structure are lighter.

It's just how this thing is made, and the Russians haven't analyzed it for a long time, but they just know that the material of the blade itself is high-strength titanium alloy, and then ...... There is no then.

The shape can't be done, the manufacturer also has no clue, if it is placed in the Soviet era, there is still a little hope for the slow toss in a ruthless breath, but the Soviet Union is broken into a slag, without strong support, Tu-204 with a large bypass than turbofan engine produced by Russia can only be a bubble of dreams, it looks very no, and it will break when you touch it.

A few years ago, Djokovic, who was in charge of the Tu-204 project, did not give up, and campaigned in Moscow to call for more investment in the Tu-204 project, and in less than 10 years, he would definitely create a classic passenger aircraft no less than the Airbus A320 and Boeing 737.

However, the poor people in the newborn Russia are almost unable to open the pot, and the salaries of all classes are almost unable to be paid, so what kind of passenger plane project should I invest in? I will invest in it for 10 years? Are you Djokovic having a broken head, hurry up and stay where you cool?

This is not bad, but some unscrupulous Russian oligarchs regard the Tu-204 as a business to collect money, ostensibly with good intentions to introduce engine giants such as Rolls-Royce and Pratt & Whitney to Djokovic, so as to replace Russian products with European and American power.

In fact, it is nothing more than a soft knife killing, using this so-called cooperative method to stifle Russia's aero-engine manufacturing capacity and even the research and development capacity of large passenger aircraft.

Djokovic knew the consequences of doing so, and he rejected the oligarchs' so-called goodwill without even thinking about it.

If you don't eat soft and hard, there is no way, Tu-204 can only be resigned to fate whether it is dead or alive.

Djokovic was also forced to have no choice, and when he heard that there was an opportunity on the Chinese side, he came over to see if he could exchange Tupolev's old background for some money in order to maintain the Tu-204 project that he had been fighting for for almost 15 years.

As a result, before the cooperation began, he saw in the Ascendas Group a wide-chord titanium alloy fan blade with a forward and backward profile like the Damascus scimitar of the fan blades of Rolls-Royce's new "Trent series" turbofan engine.

This gave Djokovic a sense of déjà vu that the heat was in the dim light.

The excitement is as congested as when the melon was broken more than forty years ago.

However, even with such excitement, Djokovic still steadied himself, because he didn't know what the structure of the wide-string titanium alloy fan blades of Tengfei Group was, so he suppressed the madness of his heart and asked Liu Cong with a trill: "......What is the structure inside your blade?"

"That's it!" Before Djokovic finished speaking, Liu Cong dismantled the model in his hand, revealing the "Z" shaped structural support inside...... Right...... That's it...... That's it......"