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Chapter 894: Benchmarking the F-22

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    "Thisthisthis"

    I don¡¯t know how long it took, but Djokovic opened his mouth and wanted to say something, but he couldn¡¯t say anything for a long time. He had no choice but to do it. The scene in front of him was really too shocking.

    I saw that the black first-stage fan of the wd-60ml turbofan engine was covered with minced meat and feathers, and even a little blood stains were attached to it. It was obvious that a bird impact test of the engine was being carried out here, and the engine was used for impact.  The experimental birds were quite heavy.

    Because right next to them, the staff operating the air cannon were thawing two frozen dead chickens. It was visually estimated that each chicken weighed about 2 kilograms.

    This level has exceeded the safety indicators of most aviation engines. At least the civilian engines of the former Soviet Union cannot meet this standard.

    Of course, these alone cannot shock Djokovic and others so much. After all, the fighting nation has always adhered to the glorious tradition of using enough. As long as the engine can send iron lumps to the sky, safety is not the point.

    The reason why these Russians are having trouble even talking is the number of first-stage fan blades of the wd-60ml turbofan engine in front of them, and the pitch-black shape of the blades.

    22 pieces!  S-shaped rhythm curve!

    ??When combined together, it creates a unique industrial beauty.

    However, in addition to this throbbing beauty, Djokovic also saw the excellent performance of the wd-60ml turbofan engine, which is a new generation of high-thrust engines with low fuel consumption, high thrust, low noise, and high stability.  .

    You must know that the current general aviation engines have more than 36 fan blades, and most of them are made of metal. A large number equals a heavy weight, but Ascendas Group's wd-60ml turbofan engine has more than ten fewer fan blades than traditional engines.  A fan blade, what does this mean?

    The wd-60ml turbofan engine has significantly reduced weight.

    When the weight is reduced, the thrust-to-weight ratio will be higher. When the thrust-to-weight ratio is higher, the overall thrust will be increased. Based on this, along with other performance improvements, the performance of the wd-60ml turbofan engine will naturally increase.

    Of course, this only shows that the wd-60ml turbofan engine is okay, not excellent. But with the addition of the S-shaped rhythm curve, it will completely change qualitatively, because the blades of this shape are more aerodynamic than the previous scimitar-shaped blades.  The layout is more efficient, especially when facing supersonic speeds at the blade tip, it can absorb high-speed airflow more effectively, thereby creating greater thrust for itself.

    All in all, all in all, Liu Cong was not bragging just now, and Ascendas Group¡¯s wd-60ml turbofan engine is really excellent, so a group of senior executives and experts in the Russian aviation industry who were clamoring before were silent, but I don¡¯t know why the old face  Djokovic started his performance again.

    He coughed twice to relieve his shock, then turned to look at Liu Cong with a smile, and asked kindly: "How do you make blades like this? Also, what about the h-zb800 grade carbon fiber you just mentioned?  What kind of product is it?¡±

    Liu Cong¡¯s smile became more and more honest, but there was a sneer in his heart, and he kept telling lies, not afraid that I would scare you to death if I said it.

    How is it made? What product is it?

    ? It is a product that is made to compete with the American F-22!

    Yes, what Liu Cong was thinking was absolutely correct. In fact, as early as seven or eight years ago, Song Yanan of the Aeronautical Materials Research Institute, a subsidiary of Ascendas Group, inadvertently prepared a carbon fiber composite during a test.  After discovering that different fiber gaps and arrangement levels in the material can form micro-specular reflection effects, reduce the return of radar waves, and thus achieve a certain stealth effect, Ascendas Group has actually been included in the next-generation combat aircraft by its superiors.  Supporting pre-research key support units.

    It was still the late 1980s, and the progress of the No. 10 Project was still stumbling, but the superiors had already taken a long-term view and laid out the systematic pre-research of the next generation of combat aircraft. From that time on, one generation was developed, one generation was pre-researched, and one generation was explored.  R&D ideas began to take shape.

    It¡¯s just that the overall technology at that time was backward and the scientific and technological conditions were effective. Although some units such as Ascendas Group had some bright spots, the overall level was still not enough to launch a new generation of combat aircraft.

    Even the bright spot of Ascendas Group is only a theoretical breakthrough obtained in the laboratory, which is still far from practical application. Let alone how to carry out the fiber array and weaving of this material, even if it meets the demand, it will not be possible.  Put it on the plane.

    Because according to the requirements for the new generation of combat aircraft announced by the United States, one of the requirements is supersonic cruise. The heat generated by the friction between the aircraft body and the air during the supersonic speed process is very high. Ordinary carbon fiber composite materials simply cannot withstand the burning of this temperature.  .

    Therefore, the difficulties faced by Ascendas Group include not only the stealth function of the material itself, but also theUse real-world problems on an airplane.

    Fortunately, superiors attach great importance to this aspect. Especially in the face of the progress of the American F-22 fighter jet, they have stepped up the pace of pre-research.  Investment intensity in large pre-research projects.

    In the early 1990s, Ascendas Group¡¯s state allocation for composite materials reached RMB 80 million, which increased to RMB 150 million in 1993. After a major event in 1996, R&D funding was increased to RMB 300 million.

    In addition, aviation and aerospace departments, local and military R&D funds have also followed up. Coupled with Ascendas Group¡¯s own high annual R&D investment, Ascendas Group¡¯s Materials Research Institute has an annual R&D expenditure of no less than 5 RMB.  100 million.

    After spending money regardless of the cost for many years, Song Yanan's team finally came up with a new composite material at the end of last year that can be put into practical applications with both high strength and high toughness, as well as specular emission and wave-absorbing properties - 3900.  ¡ª2t800 prepreg.

    Among them, 3900-2 is the number of epoxy resin in prepreg. Only one such composite material has ultra-high toughness, and the use of epoxy resin plays an important role. Not only that, depending on the different proportions of epoxy resin, there will also be  It has different properties of absorption for radar waves.

    After testing, the 3900-2 model epoxy resin, after high-temperature reinforcement, has particularly strong absorption properties for mainstream air defense radars such as millimeter waves and centimeter waves. With the unique fiber arrangement, it can achieve extremely excellent stealth effects.

    As for t800, as the name suggests, it is t800-level high-strength medium-module carbon fiber. Its function is to cooperate with 3900-2 epoxy resin to form the main structure of the entire composite material.

    With such an awesome thing, the head of Ascendas Group, the king of understanding in the aerospace industry, the chosen one in the pretentious world, the master of naming, Zhuang Make Money Jianye, of course did not know how to miss this golden opportunity, so he hid in  After three days of waiting in the office, I finally came up with a resounding name for this new material: h¡ªzb800

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