"Fan blades made of carbon fiber composites?"

Djokovic looked at Liu Cong suspiciously, and almost wrote the words "I don't believe it" on his head, not only Djokovic, but also other executives and experts in the Russian aviation industry all had deep doubts about Liu Cong's words.

It's no wonder that these old hairs will react like this, you must know that in today's world, only the United States can apply carbon fiber composite materials to the fan blades of turbofan engines.

That is the king of power of the general GE-90 large bypass ratio high-thrust turbofan engine, a single thrust of 56.9 tons, thus sounding the death knell of the four large passenger aircraft, because equipped with two GE-90 Boeing 777 can easily carry out tens of thousands of kilometers of intercontinental flight, and fuel economy, maintainability has been greatly improved, compared with this Boeing 747 such four passenger aircraft is a bit chicken.

Of course, this is only one aspect of the GE-90 civil aviation revolution, the reason why it can reach such a degree is naturally inseparable from the various black technologies that GM has poured into it, one of which is the use of carbon fiber on the fan blades, the reason why GE-90 can crush competitors such as Rolls-Royce and Pratt & Whitney, and ascend to the throne of aero engines, largely thanks to this epoch-making carbon fiber fan blade.

Don't look at the fact that carbon fiber composite materials have been widely used in aviation and aerospace, but some important components still cannot be replaced by carbon fiber composite materials, including the fan blades of turbofan engines.

Because the strength of most carbon fiber composite materials is sufficient, but the toughness is very different from that of metal materials such as titanium alloys, which leads to the fact that carbon fiber composite materials have always been unable to pass the key index of hitting birds, often because after the impact of the birds, the fan blades of carbon fiber composite materials are completely broken, which leads to engine stopping.

Therefore, most of the aviation development enterprises gave up after a few rounds of testing, only General Motors persevered, and finally obtained carbon fiber composite materials with high strength and ultra-high toughness, which was used as the basis to completely overcome the disadvantages of weak structural strength of carbon fiber when the bird hit, and opened a new era of aviation development.

What does it mean to be unique to this scorpion poop?

Two words, monopoly.

If nothing else, you can see that the Boeing 777 order of the United States is smashing to GM without hesitation.

As for the two competitors of Rolls-Royce and Pratt & Whitney, in the face of the crushing advantage of GE-90, they naturally know that they will not be able to make a breakthrough in materials in a short period of time.

Seeing that the list of the new generation of twin-engine wide-body passenger aircraft represented by Boeing 777 was about to be taken away by General Motors, Pratt & Whitney simply gave full play to its mechanical advantages and designed a complex planetary gear set between the first-stage fan and the engine compressor, so as to reduce the speed of the first-stage fan, so as to control the efficiency of the fan blade tip into supersonic speed, and use this almost self-harming method to reduce efficiency to obtain the possibility of increasing the diameter of the first-stage fan.

Luo Luo is not so ruthless as Pratt & Whitney, but sent his own traditional arts, three-rotor technology, I think Luo Luo just stepped into this deep pit and almost got into it, this time there is no way to re-enter the pit, if you don't get the same level of engine, you have to be squeezed to death by GM;

Powerful aviation giants such as Pratt & Whitney and Rolls-Royce are helpless in the face of the small fan blades on GM's GE-90, let alone other companies or countries.

This includes Russia, which has hit rock bottom, but is still ambitious.

A group of Russian aviation people with Djokovic as the core really wanted to make a general technical route and replicate the glory of the Soviet era.

After listening to the generous statements of Djokovic and others, the Moscow authorities were also enthusiastic for a while, and with a stroke of the pen, they approved 20,000 rubles as funds.

Yes, it's only 20,000 rubles, not 20,000 dollars, in Russia, the economy has been slapped on the floor by all kinds of friction by the West, all kinds of blood draws, the ruble has depreciated so much that it is almost waste paper, 20,000 rubles, not to mention the most cutting-edge carbon fiber composite fan blades, it is too hard to take it, but the toilet paper is too hard to wipe the buttocks.

What's more, even if it's not rubles but dollars, 20,000 is not enough to go down the drain.

Because of this, Djokovic was very helpless at that time, but there was no sadness that the country would not be a country, after all, the United States was the only one in the world that had such capabilities, and the only superpower with the only technology was also a good match.

It's not that Russia can't do it, but that the reforms at this stage have not been completed.

Just like the serf reform in the 18th century and the industrialization in the 30s, Russia has experienced a long period of pain, but once the pain is over, the fighting nation is like a polar bear, slapping all obstacles down.

As a result, it is such a thing that even the two aviation giants and the former superpower with a good foundation can't handle, and China's take-off set says that they actually made it.

Djokovic, who heard this, was like a university professor listening to a kindergarten child figure out the Gothbach conjecture in one fell swoop, and that strong sense of absurdity gave him a first-hand experience of what magical realism is.

It's good that you China can make the fourth generation of fan blades, and you can also make carbon fiber composite blades, don't insult the term carbon fiber composite materials, you must know that this thing is the same as other things, it is divided into three, six, nine and so on, that kind of high toughness, high strength and carbon fiber is now only available in the United States, how can China, a developing country that is still struggling to catch up with modernization, have this ability?

Of course, daydreaming is possible.

Liu Cong followed Master Ju to learn the manufacturing technology of engine fan blades in his early years, and was later sent by Zhuang Jianye to study at Beihang University, and then returned to Tengfei Group to learn management with Liu Chun, until Liu Chun retired, Liu Cong came to the front of the stage from behind the scenes.

To put it mildly, Liu Cong was blackened by the two most slippery old guys in the original 23rd Branch Factory from the inside out, plus Zhuang Jianye, a shameless "role model", was admired by Liu Cong every day, and Liu Cong, who was simple on the surface, was actually very black on the inside.

Because of this, Djokovic pouted his buttocks, and Liu Cong knew how many sheep dung and eggs these old hairy people could pull.

At this moment, seeing the unpredictable face of the old hairy man, if he didn't know what these heads were thinking in their hearts, then he wouldn't have to say that he was the three belly black giants of the 23rd Factory.

So he didn't answer directly, just waved his hand: "Anyway, it's not far from the engine test site, let's go over and have a look." ”

After saying that, he raised his legs and walked towards the test site, Djokovic didn't care what he thought in his heart, the master started, they couldn't stop, they followed.

Soon the group came to the No. 1 test bench of the test site, and went up the elevator, just a WD-60ML turbofan engine was hoisting on the facilities and equipment, Liu Cong did not talk nonsense, pointing to the engine fan blades that had stopped running: "Oh~~ That is the carbon fiber composite blade we produced with our self-produced T-ZB800 grade carbon fiber!"

Djokovic and the others followed the prestige, only glanced at it, and a group of people immediately stared at each other, and they couldn't say a word when they were shocked.