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Chapter 466 Technological Leap

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    Following the direction of Qian Qiang's finger, everyone saw a gas turbine power unit about three meters long and less than one meter high placed on the thick test bench below. The pipelines on the surface were scattered in an orderly manner, and the fuselage exuded a dark golden luster.  It is running vigorously on the test bench.

    Seeing that the others were fine, Li Fang looked at Qian Qiang with a serious face and asked in a serious tone: "Qiangong, are you sure that the maximum power of your D-50 has reached the three thousand kilowatt level?"

    Not only Li Fang, but Song Changzheng also cast inquiring glances.

    It¡¯s no wonder that the two of them were so skeptical, except that the Tengfei Factory¡¯s sudden increase from the 1,000-kilowatt D-40 to the 3,000-kilowatt D-50 surprised them both.

    The most important thing is that as the navy's armament technology experts, the two of them have seen the same level of aviation engines, which is the turboprop-6 on the Y-8 maritime patrol aircraft that was just equipped with the navy a few years ago.

    But precisely because of this, the more the two of them looked at the D-50 on the test bench, the more they frowned. The reason is very simple. Compared with the turboprop-6 of the same level, except for the length of the D-50, which is almost the same as the turboprop-6, it has other features.  The side view is one or two times smaller than the Turboprop-6.

    This is like two boxing hunks. They are the same height, but their weight is one or two levels different. However, the thin guy who should fight in the lightweight category says that he has the strength to fight for the heavyweight belt. He insists on competing with the heavyweight guy.  The fat man tries to weigh a lot, but people think that the thin man is a bit overestimating his abilities.

    At this moment, when Li Fang and Song Changzheng looked at the D-50, they had the mentality of looking at a lightweight boxing macho. They must know that the power of an aeroengine is closely related to the air intake, so appropriately increasing the diameter of the engine will help improve the efficiency of the aircraft.  Increase in gas volume.

    The D-50, which can take off aviation power, seems to have not changed in this regard. Apart from being lengthened and slightly thickened due to the complexity of the external pipelines, the overall engine has the same inner diameter as the D-40 gas turbine power unit parked next to it.  essential difference.

    It can be said that it is an extended version of the D-40 gas turbine power unit, but how can such a gas turbine power unit have a power of three thousand kilowatts?  You must know that the turboprop-6 equipped with the Yun-8 is copied from a similar engine in the Soviet Union. It is the optimal result determined by the Soviet aviation technology department after rigorous calculations. Therefore, the two of them feel that what Qian Qiang just said is a bit exaggerated.

    Qian Qiang did not answer, but asked the operator on the side: "Xiao Chen, what is the power now?"

    "Two thousand two."

    "Add it to three thousand."

    "OK."

    Before he finished speaking, Xiao Chen slowly pushed up the control valve next to him. The power on the constantly beating display screen began to jump up. Soon the number reached 3046 kilowatts. Only then did Xiao Chen stop pushing up.  , and then check the various data on the screen to see if anything happens after the power is increased.

    In fact, you don¡¯t even need to look at the numbers on the screen. You can tell from the increasing roar on the test bench that the power of the D-50 is increasing little by little.

    Until the harsh buzzing sound filled the entire operating table, fortunately the operating table was soundproofed, otherwise the huge noise emitted by the gas turbine power unit would be enough to cause hearing loss to the people inside.

    However, Li Fang and Song Changzheng no longer cared about this. They just looked at each other in disbelief, not knowing what to say.

    A lightweight boxer really has the strength to challenge a heavyweight heavyweight.

    This is already a miracle in the boxing ring, but if it is placed on a gas turbine power device, it is a miracle among miracles. You must know that the ultimate pursuit of all aviation equipment is to be as lightweight as possible, so as to obtain better adaptability.  .

    The same is true for gas turbine power devices. Whether used as power for aircraft or as power generation devices on the ground, lightweight gas turbine power devices can become more flexible and more convenient to use.

    "The mass of your D-50 should be about a ton, right?" After Li Fang and Song Changzheng exchanged a few words with their heads lowered, Song Changzheng finally asked. Li Fang also looked at Qian Qiang and waited for the answer.  .

    "One ton? When did the gas turbine power unit be calculated in tons? Our take-off aviation power is measured in kilograms, but if the army calculates it this way, the total mass of our D-50 is 0.857 tons."

    After listening to Qian Qiang's words, Li Fang and Song Changzheng blushed, but before they could find a crack in the ground to get in, they heard the figure 0.857 tons. Both of them were stunned for a moment and did not react for a moment.  Coming over, Li Fang frowned and muttered: "Less than a ton?"

    "857 kilograms, which is still far away from one ton!" Director Zhao, who had been silent for a long time, finally couldn't stand it anymore. Qian Qiang just wanted to talk about the navy, so he just muddle along, but when Lao Qian came up, he moved out the troops.  Map??It also blew up Director Zhao.

    In addition, Li Fang and Song Changzheng didn't understand what 0.857 tons meant. Director Zhao finally couldn't help it and reminded him in a bad voice.

    However, Li Fang and Song Changzheng ignored Director Zhao's tone of hating that iron cannot become steel, because they were both shocked by the value of 857 kilograms. You must know that the turboprop-6 weighs 1,200 kilograms and 1.2 tons, so  Only the Song Dynasty would use the ton unit.

    According to their estimation, being able to save 200 kilograms compared to the turboprop-6 is considered a considerable technological leap. As a result, the weight of the Tengfei Aerodynamic D-50 not only dropped below 1,000 kilograms, but also reached the order of 857 kilograms.  Incredible numbers.

    This made the two of them not only surprised, but completely shocked. You must know that weight reduction of aviation equipment is a global problem. In all aspects of design, sometimes in order to achieve weight reduction requirements for a structural part, the technical team really  The weight is decreasing day and night, gram by gram.

    Reaching the kilogram-level weight reduction requirement can be said to have made considerable technological progress. Technical leaps in the 100-kilogram level are generally a luxury, but the D-50 of Tengfei Aviation Power is more than 300 times lighter than the turboprop-6 of the same level.  Kilogram, then it is not a technological leap, but a technological leap.

    The weight is light and the power is sufficient. Putting it on an airplane means it has a simple structure and increases the load. It also has great potential in other fields, so Li Fang and Song Changzheng showed a strong desire for knowledge for the first time, especially when Li Fang changed  With his cold temperament before, he asked Qian Qiang sincerely: "Qian Qiang, how did you do it?"

    "Ah~~ It's simple. We increased the compressors from the previous six to fourteen to increase the air compression ratio; the turbines were expanded from the original two to four to improve the operating efficiency and match the hx-4-1 core machine  , without increasing the diameter, the power is increased three times compared to the D-40, which is considered to have reached the expansion limit of the hx-4-1 core machine"

    Qian Qiang was talking about lifting the weight with ease. He was about to talk more professionally about the airflow velocity and power conversion between the compressor and the turbine, but was interrupted by Li Fang reaching out: "Mr. Qian, what I'm asking about is not the principle of an aeroengine.  But how do you get the total weight of the machine to 857 kilograms? You must know that the turboprop-6 of the same level is 1.2 tons, oh, no, it is 1,200 kilograms. Your D-50 is 343 kilograms lower than the turboprop-6.  "

    "Oh~~ So it's this." Qian Qiang nodded suddenly: "Of course it's made of new materials."

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