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Chapter 889 This is it

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

    Especially Djokovic, the deputy chief designer from the Tupolev Design Bureau, who was responsible for the development of the Tu-204 passenger aircraft before the collapse of the Soviet Union.

    The original plan was to use the new generation of large bypass ratio turbofan engines produced by the Soviet Union on the Tu-204.

    No modern three-dimensional industrial design software?

    At that time, Djokovic didn¡¯t take it to heart at all. What would happen if he didn¡¯t have it? He couldn¡¯t live without it?  I remember that when the Germans were forced to enter the city of Moscow, the factory couldn't even light the kerosene lamps, so they relied on their hands to make weapons, and finally drowned the Germans in the nest together with their evil thoughts against humanity.

    Because of this, the stubborn Djokovic does not believe in evil at all. There are so many well-educated engineers and draftsmen in the Soviet Union. Even without those softwares from imperialism, they can still draw one stroke after another.  .

    So this painting depicts the disintegration of the Soviet Union.

    Djokovic just woke up from a dream at this time. It turns out that once there is a generation gap in something, it really cannot be filled in with manpower.

    In fact, this is indeed the case. Drawing design and even the initial computer graphic design are two-dimensional designs. General things can be dealt with, but 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. It was initially used in the fields of nuclear weapons research and aerospace, and achieved good results. It was later adopted by major industrial giants, and the second generation was soon developed on this basis.  The third generation of 3D design software.

    ??Among them, the third-generation three-dimensional industrial design software developed by Lockheed Martin applies VR holographic projection technology, combined with higher-level algorithms and large computers, so that complex curved surfaces and difficult sections that could not be displayed in the past can be fully displayed.

    These things are obviously not achieved by relying solely on the calculations of a large number of engineers and the stroke-by-stroke drawings of draftsmen.

    Even if you can barely come up with the theoretical design, can you make a turbofan engine fan blade?

    It is obviously too naive to have such an idea. In addition to shape, there are also material, structure, stress level and other thresholds waiting in front.

    If this were not the case, turbofan engine fan blade technology would not be able to become one of the core technologies of large bypass ratio and high thrust turbofan engines.

    Regardless of anything else, ordinary materials and structures cannot withstand the impact of flying birds.

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

    Under such conditions, turbofan engine fan blades less than 1.5 cm thick must ensure structural integrity.

    This is equivalent to saying that a Passat hit a small plate less than 1.5 centimeters thick at high speed. As a result, the Passat's A-pillar and B-pillar were completely destroyed, and the car was completely scrapped, but nothing happened to the thin plate.

    Thinking of this level, not to mention ordinary aluminum alloys and steels, even ordinary titanium alloys can't do it, so that's it. The key is that the quality of this type of fan parts must be strictly controlled. After all, it is used in aircraft engines.  Things that are too heavy will affect performance.

    ??Light weight, high structural strength, excellent durability, corrosion resistance, easy maintenance

    The list of other indicators together is completely driving an aerospace engineer crazy.

    Others don¡¯t know, but Djokovic is really going crazy because he wants to equip the Tu-204 with a large bypass ratio turbofan engine produced in the Soviet Union.

    Djokovic, who couldn't get anything done behind closed doors and was mercilessly slapped in the face, finally resorted to the traditional performing arts of the Soviet era and used other people's products to see if he could copy them. As a result, he spent a lot of money to get three or four products from Europe and the United States.  A different type of large bypass ratio turbofan engine. When you take apart their fan blades, almost all Russian supporting manufacturers shake their heads like rattles.

    There is no way, they really can¡¯t make the complex structures inside European and American blades.

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

    "It's just how this thing was made. The Russians couldn't figure out the reason for most of their analysis. They just knew that the blade itself was made of high-strength titanium alloy, and then nothing more.

    The appearance can¡¯t be determined, and the manufacturer also has no clue.But in the Soviet era, there was still some hope in taking a deep breath and slowly tossing it. However, the Soviet Union was reduced to rubbish and without strong support, the Tu-204 was equipped with a Russian-made large bypass ratio turbofan engine.  It can only be a dream. It looks very dull and will break when touched.

    Djokovic, who was in charge of the Tu-204 project in the past few years, has not given up yet. He has been running around Moscow calling for more investment in the Tu-204 project. In less than 10 years, he will definitely build a model that is as good as the Airbus A320.  And the classic airliner Boeing 737 comes out.

    However, the newly born Russia is so poor that it is almost impossible to get rid of the blame, and the salaries of all strata are almost unable to be paid. What kind of passenger aircraft project do you want me to invest in?  Just invest for 10 years?  Is your brain broken, Djokovic? Go somewhere to cool down or stay indoors.

    This is not bad. Some Russian oligarchs with evil intentions regard the Tu-204 as a business to make money. On the surface, they are kind enough to introduce engine giants such as Rolls-Royce and Pratt & Whitney to Djokovic so that they can replace Russian power with European and American power.  The product.

    ¡°In fact, it is nothing more than killing people with a soft knife, using this so-called cooperative method to kill Russia¡¯s aero-engine manufacturing capabilities and even the research and development capabilities of large passenger aircraft.

    No matter how bad Djokovic was, he knew the consequences of doing so and rejected the so-called goodwill of these oligarchs without even thinking about it.

    ????????????????????????? There is no other way. Whether the Tu-204 will live or die, we can only leave it to fate.

    Djokovic was also forced to have no choice. Hearing that there was an opportunity in China, he came over anxiously to see if he could use Tupolev's old skills in exchange for some money to keep him going.  The Tu-204 project has been working hard for almost 15 years.

    As a result, before the cooperation to sell money had even begun, he saw at Ascendas Group a wide-chord blade with forward and backward sweeps like a Damascus scimitar for Rolls-Royce's newly launched "Trent" series of turbofan engine fan blades.  Titanium fan blades.

    This gives Djokovic the feeling that everyone is looking for him, and that the heat is in the dim light.

    I was so excited that I was as congested as when I broke the melon more than forty years ago.

    However, even though he was so excited, Djokovic still held steady, because he didn't know what the structure of the wide-chord titanium alloy fan blade of Ascendas Group was like, so he suppressed the madness of his heart and asked with a trembling voice.  Liu Cong: "The structure inside your blade is"

    "That's it!" Before Djokovic could finish speaking, Liu Cong took apart the model in his hand, revealing the "Z"-shaped structural support inside. Djokovic's eyes suddenly widened when he saw this.  , pointing at the model tremblingly: "Yesyesthat's itthat's it"

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