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Chapter 476 Central Wing Box

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    Zhuang Jianye suddenly felt that there was something wrong with the painting style. Wasn't it talking about advanced light transport aircraft?  Why did you pull it back and forth and get involved in the engine and materials?

    No, the rhythm has to be restored. Otherwise, what will happen to the birth certificate for the new model?

    However, before Zhuang Jianye could say anything, Song Changzheng walked up to Director Zhao with a smile and asked what special snacks there were in Mianmian City. Li Fang also added a few words, saying that he had long been interested in the yellow braised rice here.  I have been admiring the mutton, spicy chicken and smoked rabbit for a long time.

    Director Zhao was not a local, so he didn¡¯t know so much, so he naturally pulled Zhuang Jianye over and asked him to give him a good introduction.

    Zhuang Jianye looked at it this way. This was the rhythm of the three of them who were satisfied with the inspection and were ready to end it happily. If they were talking about advanced light transport aircraft on the pole, maybe the three of them would listen patiently, but the effect would not be very good. After all,  The caliber and attitude of the three people who reported the matter are very important.

    The Y-7 and Advanced Light Transport Aircraft are almost the same as the Y-7 and Advanced Light Transport Aircraft. A single difference can determine the fate of a model. It¡¯s not like Zhuang Jianye messed up the matter because he was eager for success. Anyway, the new model  The development cycle is not short, and there are plenty of opportunities, not least this time.

    So Huzhuang Jianye decisively transformed from a professional aviation blogger to an excellent food blogger. If he wanted to eat the characteristics of Mian Mian City, no problem, the arrangement would be done.

    A table of authentic cotton specialties was enjoyed by everyone. After sending Director Zhao and the others away with satisfaction, Zhuang Jianye burped and prepared to leave in the car, but before he could get in the car, he remained silent during the meal.  Qian Qiang suddenly gritted his teeth and asked, "Mr. Zhuang, did I mess up something this time?"

    Director Zhao, Song Changzheng, and Li Fang suddenly changed their focus, and then ended the inspection without any delay, which not only surprised Zhuang Jianye, but also caught Qian Qiang off guard.

    The low fuel consumption rate of the D-series turboprops mentioned before is mainly to prove that advanced light transport aircraft can fly to a range of 5,000 kilometers.

    It turns out that Li Fang and Song Changzheng were indeed surprised by the low fuel consumption of the D-series turboprops, but that was all, and then nothing more.

    You must know that Qian Qiang had many introductions to advanced light transport aircraft, but he was so confused by the three people that he didn't say a word.

    During the meal, Qian Qiang had the intention to speak, but after Song Changzheng drank three large glasses of liquor, Qian Qiang¡¯s eyes were filled with little stars. It would be great if he could stay awake, and he was talking about advanced light transport aircraft?

    It wasn't until everyone was done drinking and eating that Qian Qiang felt that his head belonged to him again, but it was too late, so he regretted it. If only he had talked about advanced light transport aircraft first, why did he talk about the engine first?  Woolen cloth?

    Zhuang Jianye drank some wine and his head was not clear. He was stunned for a moment, frowned and thought for a while before he understood the meaning of Qian Qiang's words. Then he chuckled and said, "The three chiefs probably thought we were bragging."

    "But we are not bragging. Our engines installed on traditional aircraft models such as the Y-7 and An-26 will certainly not be able to achieve disruptive ranges because the fuel capacity of these two models is limited. However, Lin Gong and the others have already  The research on center wing box technology, like our D-40 and D-50, has been going on for three years, and a lot of results have been achieved. At least doubling the fuel capacity is not a problem."

    If Qian Qiang¡¯s words are heard by the three people who have left, they will definitely be shocked. The D-40 and D-50 were actually launched three years ago. What is the situation with the core machine?

    In fact, it is not difficult to understand that at the original Tengfei Factory, after the preliminary results of d-20 and d-30 were achieved, the pre-research of d-40 and d-50 began immediately.

    It¡¯s just that at that time, the indicators of the two models did not reach such an abnormal level due to materials and accumulation. As the Ascendas Factory was later upgraded step by step, it became the Ascendas Aviation Manufacturing Corporation, and the original Jet Power Office became the Ascendas Aviation Power Plant.

    In order to master the core technology, reduce R&D costs and expand application models, Tengfei Aviation Power Plant, with the support and promotion of Zhuang Jianye, began to shift from specific models to research on core aircraft.

    ¡°However, this is not something that can be said lightly. Without several years of model development and experience accumulation, it would be impossible to build a core machine.

    The reason why the hx-4-1 core machine can advance relatively smoothly is that it is based on the two mature models of d-20 and d-30, as well as the two pre-research models of d-40 and d-50.  above.

    Using a method similar to mathematical common denominators, the common technology and mature experience of the four models were selected, combined with the new aviation materials continuously developed by Ascendas Aviation Corporation. This allowed the hx-4-1 core aircraft to go through two iterations.  , with what it looks like today.

    Of course, when we were rushing to develop the hx-4-1 core machine, we were pre-researchingThe two models of ??d-40 and d-50 have not stopped. They continue to absorb the research results of the hx-4-1 core machine and conduct a series of test experiments. There are frustrations of failure, and there are also cases where a certain data reaches the target.  joy.

    Until now, some indicators are still unstable, and they are still being tested and improved. This process is very long.

    Compared with Qian Qiang's engine, Lin Guanghua's center wing box was much smoother. Originally, Ascendas Aviation Corporation was not involved in this field, but one day suddenly discovered the graduation project of the trainees at a certain pilot institute in the training center.  The addition of a central wing box for a high-wing monoplane made a welcome change in the parameters of the aircraft, which attracted Lin Guanghua's attention.

    ¡°Then he shamelessly lured the trainee to the then-Tengfei Factory to conduct research on the central wing box with him.

    The initial idea was very simple, just to use it on a drone, because the central wing box can not only strengthen the wings on both sides, but the wing box can also be used as a storage device for the fuel tank, increasing the fuel capacity of the drone, and thus  Increase the range of drones.

    However, when the drone starts to change engines, the fuel economy increases, and the range naturally increases. Although the central wing box increases the fuel capacity, it also increases the total structural weight, which is a bit useless for the drone. This matter is also  Just let it go.

    After that, Ascendas Airlines prepared to enter the manned aircraft market, and prepared to use Yun-5 as a breakthrough point, and then Yun-6, which gave Lin Guanghua more and more room to play, so in a certain Yun-6 plan, he added a  Center wing box goes up.

    But firstly, the manufacturing process of the Yun-6 is to solidify the fuselage with a honeycomb structure. With the capabilities of Ascendas Airlines, it is not possible to leave a ready attachment position for the central wing box. Secondly, the Yun-6 is a small aircraft. On the fuselage,  Adding two support beams can strengthen the wing. It is simple, effective, and cost-effective. It is much more convenient than using a central wing box, so I can only give up again.

    Until the advanced light transport aircraft program was launched within Ascendas Aviation Manufacturing Corporation, and the ultra-long range made it impossible for ordinary structures to meet the target requirements, Lin Guanghua once again sent out the central wing box that he had been studying for many years.

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