"Fan blades made of carbon fiber composite materials?"

Djokovic looked at Liu Cong suspiciously, and almost wrote the words "I don't believe" on his forehead. Not only Djokovic, but also other executives and experts in the Russian aviation industry have a big deal. Deeply doubted what Liu Cong said.

It's no wonder that these old men would react in this way. It is important to know that only the United States can apply carbon fiber composite materials to turbofan engine fan blades in the world today.

That is the GM GE-90 large bypass ratio high-thrust turbofan engine, which can be called the king of power, with a single thrust of 56.9 tons, which sounded the death knell for four-engine large passenger aircraft, because Boeing equipped with two GE-90s The 777 can easily carry out tens of thousands of kilometers of intercontinental flight, and the fuel economy and maintainability have been greatly improved. Compared with this four-engine airliner such as the Boeing 747, it is a bit tasteless.

Of course, this is only one aspect of GE-90's civil aviation revolution. The reason why it can reach such a degree is naturally inseparable from the various black technologies that GM has poured on it. One of them is the use of carbon fiber to make the first-level fan. Blades, the reason why GE-90 was able to crush Rolls-Royce and Pratt & Whitney and other competitors and ascend to the throne of aero-engines is largely due to this epoch-making carbon fiber fan blade.

Regardless of the fact that carbon fiber composite materials have been widely used in aviation and aerospace, some important components cannot be replaced with carbon fiber composite materials, including the fan blades of turbofan engines.

Because most carbon fiber composite materials are strong enough, but the toughness is very different from that of metal materials such as titanium alloys, which results in carbon fiber composite materials that are always unable to pass the key indicator of bird strike, often because of the impact of birds, carbon fiber composite fan blades Completely shattered, causing the engine to stop.

Therefore, most of the aviation companies gave up after a few rounds of tests. Only GM persisted and finally obtained a carbon fiber composite material with high strength and ultra-high toughness. This was the basis to completely overcome the impact of carbon fiber on birds. The disadvantage of the weak structural strength of the time has since opened a new era of aviation development.

What does this scorpion baba alone mean?

Two words, monopoly.

Not to mention anything else, it can be seen by looking at the US Boeing 777's air delivery order without hesitating to GM.

As for the two competitors, Rolls-Royce and Pratt & Whitney, facing the crushing advantages of GE-90, they naturally know that they cannot make a breakthrough in materials in a short time.

Seeing that the new-generation twin-engine wide-body airliner represented by the Boeing 777 had to be taken away by General Motors, Pratt & Whitney simply used its mechanical advantages in the first-level fan and engine air compressor. A complex planetary gear set is designed to reduce the speed of the first-stage fan, thereby controlling the efficiency of the fan blade tip to enter the supersonic speed. Using this almost self-damaging method of reducing the efficiency, the first stage is increased. The fan diameter is possible.

Luo Luo is not as ruthless as Pratt & Whitney. Instead, he sent out his own traditional arts, three-rotor technology. Thinking that Luo Luo stepped into this deep pit back then, he almost got in with his life. There is no way to re-enter the pit this time. If you don't make an engine of the same level, you will have to be run to death by GM; you may be pitted to death if you step in, and it is better to fight for it.

Pratt & Whitney, Rolls-Royce, and other powerful aviation giants have nothing to do with the small fan blades on GE-90, let alone other companies or countries.

This includes Russia, which has fallen to the bottom but still has ambitions.

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

After listening to the generous statements of Djokovic and others, the Moscow authorities were also very excited. With a stroke of a large pen, they approved 20,000 rubles as funding.

Yes, it is only 20,000 rubles, not 20,000 US dollars. The Russian economy has been photographed on the floor and subjected to various frictions and blood draws from the West. The depreciation of the ruble is almost a waste of paper. Don't talk about 20,000 rubles. The cutting-edge carbon fiber composite fan blades are too hard to wipe the bottom with toilet paper.

What's more, even if it is not rubles but US dollars, 20,000 is not enough.

Because of this, Djokovic was very helpless at the time, but there was no sorrow that the country would lose the country. After all, only the United States in the entire world has such capabilities, and the only superpower with the only technology is considered a good match.

Russia is not impossible, but the reforms at this stage have not been completed.

Just like the serf reforms in the 18th century and the industrialization in the 1930s, Russia has experienced long-term pains, but once the pains pass, the fighting nations are like polar bears, slapped down all obstacles.

As a result, even the two major aviation development giants and the old superpowers who are not bad at the former superpower can't handle things. China's take-off set shows that they actually did it.

Hearing this, Djokovic had a kind of university professor who listened to kindergarten children to calculate Gothbach’s conjecture in one fell swoop. The strong sense of absurdity gave him a kind of personal experience of what magic realism is.

It’s pretty good that you can make the fourth-generation fan blades in China, and you have also made carbon fiber composite blades. Don’t insult the term carbon fiber composite material, okay? You have to know that this thing is divided into different categories like other things. That kind of carbon fiber with high toughness and strength is now only available in the United States. How can a developing country in China that is still struggling to catch up with modernization have this ability?

Of course, daydreaming is possible.

In the early years, Liu Cong followed Master Ju to learn the manufacturing technology of engine fan blades. Later, he was sent by Zhuang Jianye to Beihang University for further study. After that, he returned to Ascendas Group to study management with Liu Chun. It was not until Liu Chun retired that Liu Cong walked from behind the scenes to the stage. .

To put it bluntly, Liu Cong was blackened from the inside out by the two most slippery old guys in the 23rd branch at the time. In addition, Zhuang Jianye’s shameless "example" was placed there. Liu Cong pays homage to him every day, and Liu Cong, who is silly on the surface, is actually very dark inside.

Because of this, UU Reading www.uukanshu. Com Djokovic pouted his ass, Liu Cong knew how many sheep dung eggs the old Maozi could pull.

Seeing the unpredictable face of an old Maozi at this moment, if he doesn't know what these people are thinking, then he will not have to say that he is the three big black-bellied giants in the 23rd branch.

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

After speaking, he raised his leg and walked towards the test field. No matter what Djokovic thought, the host moved, and 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. It happened that a WD-60ML turbofan engine was being hoisted on the facility equipment. Liu Cong was no nonsense, pointing to the engine fan that had stopped running. Blade: "Here~~ That is the carbon fiber composite blade produced by our self-produced T-ZB800 grade carbon fiber!"

Djokovic and others followed their reputations, and only glanced at them, and a group of people immediately stared their eyes round and couldn't say a word when they were surprised.

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