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Chapter 890 Super Molding¡ªDiffusion Connection Process

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    If we say that seeing the machete-like wide-chord titanium alloy fan blades with forward and backward sweep sections like Rolls-Royce's "Trent" series turbofan engines, Djokovic is as excited as a nerd.  There are so many words to add.

    When I saw Djokovic with the "z" structure inside, he was so excited that he was so excited that he was riding a big horse.

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

    After waiting for a long time, I finally returned to the human world. Then, without taking a breath to stabilize myself for a while, I pointed at the "z"-shaped structure in the model and asked urgently: "How did you make this structure?"  ?¡±

    As soon as these words came out, the executives and experts in the Russian aviation industry who were originally worried about Djokovic's shortcomings turned their hopeful eyes towards Liu Cong.

    That¡¯s right, how did Ascendas Group create the ¡°z¡±-shaped structure arranged in the internal cavity?

    You must know that the Soviet Union and later Russia have been studying this for seven or eight years but have made no progress at all. Looking at the world, only the United Kingdom and the United States can really create such a structure.  semicolon.

    No way, the titanium alloy "z" structure used as a support inside is not a traditional honeycomb structure, but a hollow truss-like structure, similar to the beams in traditional houses, with a large number of hollows in the middle of the frames.

    ??In layman¡¯s terms, two outer blades of titanium alloy are supported by hair-thin titanium alloy hollow beams.

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

    After all, the honeycomb structure is a whole, and it only needs to be plasticized accordingly according to the requirements. As for the connection method, it can be completed with high-grade vacuum brazing or electron beam welding.

    Overall it¡¯s not complicated.

    However, this method will not work in a "z"-shaped structure. Firstly, this structure is not a whole. Secondly, the titanium alloy wire used to support the blades is extremely fine and cannot withstand any welding method.  The high temperature comes and burns.

    If this were not the case, with the Soviet Union¡¯s advanced knowledge in welding technology at that time, the ¡°z¡±-shaped structure would have been easily solved long ago. Why wait until it disintegrated to understand what was going on?

    So this is a difficult problem that not only Djokovic wants to know, but also other Russian executives and experts.

    Although Liu Cong is no longer the half-assed electrician he was at the 23rd Factory, he is still essentially the honest man who personally went fishing in the river and invited Zhuang Jianye to his home.

    Seeing that Djokovic was so excited that he almost went crazy Bah~~ He almost went to see the sage. Liu Cong couldn't bear it, so he weighed it a little and said: "Well our fan  The z-shaped structure inside the blade is made using a method called super-forming-diffusion joining process."

    "Super molding-diffusion connection process?" Djokovic narrowed his eyes unconsciously when he heard this.

    Liu Cong nodded without hesitation: "That's right, it's the super molding-diffusion connection process"

    With that said, Liu Cong introduced the high-precision manufacturing technology of Tengfei Group.

    It turns out that Ascendas Group had mastered this technology three years ago, but it did not apply it to the manufacture of fan blades for turbofan engines at that time. Instead, it applied it to an anti-ship missile.

    Because the missile uses the wd-16p small turbojet engine produced by Ascendas Group to replace the original rocket engine, the overall aerodynamic layout of the missile has to be changed. However, in order to save money, the Navy requires the new anti-ship missile to use the old model.  launcher and storage device.

    This requires that the overall size of the new anti-ship missile cannot exceed the old model by much. In particular, the diameter of the missile body must be determined according to the upper limit of the navy's existing launch devices and storage devices.

    This is hard to blame for the chief designer in charge of the new anti-ship missile, because the anti-ship missile equipped with turbojet power is different from the old model with rocket thrust. It requires surrounding air to support combustion, so there must be air injection on the missile body.  of the air intake.

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

    The problem is that as a result, the diameter of the missile will greatly exceed the upper limit of the Navy's existing launch devices and storage devices, and will not meet the Navy's requirements.

    Changing to a retractable air inlet is technically feasible, but the cost has skyrocketed, far exceeding the budget standards set by the Navy.

    In desperation, the commander-in-chief of the new anti-ship missile simply copied the American "Harpoon""For the anti-ship missile inlet layout, a titanium alloy inlet with double-sided inner ducts was designed.

    In this way, the air inlet is almost at the same level as the missile body, with only the edge of the opening slightly higher than the missile body. In this way, while meeting the requirements of the Navy, the efficiency of the turbojet engine can be maximized, so that the maximum range of the new anti-ship missile can reach 150 meters  kilometer.

    However, the design is very perfect, but when implemented in practice, the development team has a lot of troubles.

    This kind of titanium alloy air inlet with double-sided inner pipes is good, but the key is that it is not easy to make. First, the weight must be controlled. It cannot be too heavy, otherwise it will cause the center of gravity of the entire missile to move backward, causing the missile to be ejected.  If you go, you will become a large diamond monkey.

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

    Finally, it has extremely strong corrosion resistance. After all, it is naval equipment and cannot be too delicate in the high-salt and high-humidity maritime environment.

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

    But the problem is that throughout the world, the only country that can make a "Harpoon" that integrates the inlet and the missile body is the United States. The rest, including France, have anti-ship missiles equipped with turbojet engines.  Counting one by one, there is no air intake that does not protrude outside the missile body.

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

    Faced with this situation, the new anti-ship missile development team at that time said that it was not desperate, but it was false. They were just treating a dead horse as a living horse doctor and running around various domestic manufacturers to see if they could find a so-called miracle.

    It turns out that this search really came from the Ascendas Group, the engine supplier of anti-ship missiles.

    Among the supporting projects of Project 10 that Ascendas Group participated in at that time, the supporting products of the vertical tail spar and reinforced ribs No. 3, 12, 27 and 28 had just been produced by the chief engineer of Project 10.  return.

    There is only one reason: the technology is too advanced and does not meet domestic mass production requirements.

    At that time, Zhuang Jianye¡¯s MMP mentality was not to be mentioned. For these parts, Ascendas Group almost completely suppressed advanced technologies such as carbon fiber and aramid fiber at the bottom of the box. However, it got such a comment. Who should blame it?  It won't feel good either.

    But the problem is that there is nothing we can do about it. Military equipment, especially the future main battle military equipment of the Air Force, must always have a balance between advancement and mass production. Otherwise, once the war begins, mass production will be required, and it turns out that those  If high-end materials are not available, why should we be dumbfounded?

    Therefore, the chief engineer¡¯s request was reasonable, so Zhuang Jianye gritted his teeth and endured it.

    However, before Zhuang Jianye could make adjustments, the new technical indicators from the No. 10 Chief Engineer once again made Zhuang Jianye go berserk. Even if they were required to comply with mass production, the new product standards actually required the performance indicators of the combination of carbon fiber and aramid fiber.  More than 85%.

    Using materials that can be mass-produced, it reaches 85% of the level of top-end high-end aviation materials, and more!

    Is this a man-made aircraft?  It is simply forcing people to bang their heads against the wall!

    So after receiving the new technology standard, Zhuang Jianye carried a bottle of Erguotou to the roof of the Ascendas Group building, drank half the bottle, and cursed in the direction of the eastern Sichuan plain for more than two hours.  Go downstairs feeling comfortable.

    ¡°Then¡­then the super-forming-diffusion joining process was forced out under the heavy pressure of the No. 10 Chief Engineer.

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