Chapter 890

If Djokovic's wide chord titanium alloy fan blades with forward and Backward Swept profiles, like those of the Trent series turbofan engines, make him as excited as a houseboy.

Djokovic, who saw the "Z" shaped structure inside, was just riding on the ocean horse to get excited by the explosion.

I almost turned my eyes and went to see those Soviet sages.

After a long delay, he finally came back to the world. Then he could not take a breath. After a while, he pointed to the "Z" structure in the model and asked, "how do you make this structure?"

As soon as these words were uttered, the Russian aviation industry executives and experts who were worried about Djokovic's weaknesses turned their eyes on Liu Cong.

That's right. How does the Z-shaped structure in the internal cavity of Tengfei group come out?

We should know that the Soviet Union and later Russia have studied this aspect for seven or eight years, but no progress has been made at all. Looking around the world, only the United Kingdom and the United States can really make this kind of structure.

There's no way. In fact, the titanium alloy "Z" structure as a support inside is not a traditional honeycomb structure, but a hollow truss structure, which is similar to the beams in traditional houses. There are a lot of hollows in the middle of the frame.

In popular words, it is to use a titanium alloy hollow beam as thin as hair to edge the two outer blades of the same titanium alloy.

The principle is similar to the honeycomb sandwich structure of the next generation, but the processing and manufacturing are quite different.

After all, the honeycomb structure is a whole, according to the requirements of the corresponding overall plasticity on the line, as for the connection method, with high-level vacuum brazing or electron beam welding can be completed.

Overall, it's not complicated.

However, this method will not work when it is placed in the "Z" shape structure. Firstly, this structure is not a whole. Secondly, the titanium alloy wire used to support the blade is extremely fine, which can not withstand the high temperature caused by any welding method.

If not, with the Soviet Union's profound knowledge in welding technology at that time, the "Z" structure would have been easily solved. Why wait until it disintegrated to figure out what happened?

So the problem is not only that Djokovic is eager to know, but also that of other Russian executives and experts.

Although Liu Cong is not the electrician in the 23rd branch of the factory, he is still the honest man who personally went fishing and invited Zhuang Jianye to his home.

Seeing Djokovic excited, he almost went crazy Bah ~ ~ he almost went to see the sages. Liu Cong was a little impatient, so he weighed it up a little and said, "er The Z-shaped structure in our fan blade is made by a method called super forming diffusion bonding process. "

"Superforming diffusion bonding process?" Djokovic heard the words and his eyes narrowed unconsciously.

Liu Cong nodded without hesitation: "that's right, it's ultra new forming diffusion bonding process..."

With that, Liu Cong introduced the advanced manufacturing technology of Tengfei group.

It turns out that Tengfei group had mastered this technology as early as three years ago, but it was not applied to the manufacture of fan blades of turbofan engine at that time, but applied it to an anti-ship missile.

Because the wd-16p small turbojet engine produced by Tengfei group was used to replace the original rocket engine, the overall aerodynamic layout of the missile had to be changed. However, in order to save money, the Navy required the new anti-ship missile to use the old launch device and storage device.

This requires that the overall size of the new anti-ship missile should not exceed that of the old model too much, especially the diameter of the missile must be determined according to the upper limit of the Navy's existing launching device and storage device.

It's hard to break the chief designer in charge of the new anti-ship missile, because the anti-ship missile with vortex jet power is different from the old model of rocket thrust before, and it needs ambient air to support combustion, so the air inlet for air injection must be left on the missile body.

According to the traditional design idea, a rectangular protrusion is set under the missile as the inlet for the turbojet engine to work normally.

The problem is that in this way, the diameter of the missile will greatly exceed the upper limit of the Navy's existing launching and storage devices, which does not meet the requirements of the Navy.

It's technically feasible to change to a retractable inlet, but the cost soars rapidly, far beyond the budget standard set by the Navy.

However, the chief engineer of the new anti-ship missile simply copied the "harpoon" anti-ship missile inlet layout of the United States and designed a titanium alloy inlet with bilateral inner pipes.

In this way, the intake port is almost equal to the missile body, but the opening edge is slightly higher than the missile body. In this way, under the condition of meeting the requirements of the Navy, the efficiency of the turbojet engine can be maximized, and the maximum range of the new anti-ship missile can reach 150 km.

However, the design is very perfect, but in practice, the development team has to collect all kinds of hair.This kind of titanium alloy inlet with double side inner pipes is good, but the key is that it is very difficult to make it. First of all, the weight should be controlled, not too heavy, otherwise the center of gravity of the whole missile will move backward, and the missile will become a giant diamond monkey.

Secondly, the structural strength must be good enough to withstand at least large overload impact.

Finally, it has strong corrosion resistance. After all, it's naval equipment. It can't be too delicate in the sea environment with high salt and humidity.

In this way, the design team referred to the American harpoon and proposed an integrated molding scheme.

But the problem is that throughout the world, the only country that can make the "harpoon" that integrates the inlet and the missile body is the United States. The rest, including France, include one anti-ship missile equipped with turbojet engine, and none of the inlet does not protrude outside the missile body.

There is only one reason, that is, other countries do not have the cutting-edge manufacturing technology of the United States. Even if they can design it, they can not make it.

In the face of this situation, the research and development team of the new anti-ship missile said at that time that they were not desperate. It was a fake. They just ran around the domestic manufacturers as a living horse doctor to see if they could find out the so-called miracle.

As a result, the search really came from the engine supplier of anti-ship missile, Tengfei group.

At that time, among the supporting projects of No. 10 project participated by Tengfei group, the supporting products of tail beam and No. 3, No. 12, No. 27 and No. 28 reinforcing ribs were just returned by the chief engineer of No. 10 project.

There is only one reason: the technology is too advanced to meet the requirements of domestic large-scale production.

At that time, let alone the MMP's rampant mentality in Zhuang Jianye's mind. You know, for the sake of these components, Tengfei group almost put all the advanced technologies such as carbon fiber and aramid fiber on the bottom of the box. As a result, it won't be easy for anyone to get such a comment.

, but the problem is that it is not easy and can not be done. Military equipment, especially the main air force and equipment of the future air force, always need a balance between advanced nature and large-scale production. Otherwise, once the war is opened, large-scale production is needed.

So the chief engineer's request is reasonable, so Zhuang Jianye gritted his teeth and put up with it.

However, before Zhuang Jianye's adjustment, the new technical indicators of the No. 10 chief engineer once again made Zhuang Jianye run wild. Even if he wanted to meet the requirements of large-scale production, he had to keep more than 85% of the combined performance indicators of carbon fiber and aramid fiber in the new product standard.

With the materials that can be mass produced, it can reach the level of 85% of the top high-end aviation materials, and it is more than 100%!

Is this a man-made plane? It's forcing people to hit the wall with their heads!

So after receiving the new technical standard, Zhuang Jianye carried a bottle of Erguotou to the roof of Tengfei group building, poured half a bottle of Erguotou, and scolded the direction of East Sichuan plain for more than two hours. Then he went downstairs happily.

And then Then the super forming diffusion bonding process was forced out under the heavy pressure of No.10 chief engineer.