Chapter 894

"This This This... "

I don't know how long after that, Djokovic opened his mouth and wanted to say something, but he didn't say why for a long time. However, there's no way. The scene is too shocking.

The black primary fan of wd-60ml turbofan engine is covered with broken meat and feathers, and even a little blood stains. It is obvious that the bird impact test of the engine is being carried out here before, and the weight of the bird used for the impact test is not small.

Because right next to them, the air cannon operators were thawing two frozen dead chickens, each weighing about 2 kg.

This level has exceeded the safety index of most aero engines, at least the civil engines of the former Soviet Union can not reach this standard.

Of course, these alone can't shock Djokovic and others. After all, the fighting nation always adheres to the glorious tradition of sufficiency. As long as the engine can send the iron knot to heaven, safety is not the key.

The reason why these Russians can't even talk is that the number of the first stage fan blades of the wd-60ml turbofan engine is the same as the black blade shape.

22! S-shape rhythm curve!

Together, it is a unique beauty of industry.

However, Djokovic not only has this palpitating beauty, but also sees the excellent performance of wd-60ml turbofan engine with low fuel consumption, high thrust, low noise and high stability.

We should know that the fan blades of the current general aero-engine are more than 36 pieces, and most of them are made of metal. A large number is equal to a large weight, while the wd-60ml turbofan engine of Tengfei group has more than 10 fan blades less than the traditional engine. What does that mean?

The weight of wd-60ml turbofan engine is obviously reduced.

When the weight comes down, the thrust to weight ratio will be higher, and when the thrust to weight ratio is higher, the overall thrust will be increased. Based on this, the performance of wd-60ml turbofan engine will be improved along with other performances.

Of course, this only shows that the wd-60ml turbofan engine is OK, not excellent, but with the S-shaped rhythm curve, it will have a qualitative change, because the blade with this shape is more efficient than the previous blade with curved blade, especially in the face of blade tip supersonic, it can absorb high-speed airflow more effectively, so as to create greater thrust for itself.

In a word, Liu Cong didn't talk big just now, and the wd-60ml turbofan engine of Tengfei group is really excellent, so a group of executives and experts in Russian aviation industry who were clamoring before were dumbfounded, and Djokovic, who didn't know what the old man was, started his own performance again.

He coughed twice to ease the shock. Then he turned to look at Liu Cong with a smile and asked kindly, "how do you make such leaves? Also, what kind of product is the h-zb800 grade carbon fiber you just mentioned? "

Liu Cong smile more honest, but in the heart is a burst of sneer, also set words, not afraid that I said to scare you to death.

How did you make it? What product?

The F-22 made in the United States is such a urine product!

Yes, Liu Cong is right about what he said. In fact, as early as seven or eight years ago, song Yanan, from the Aeronautical Materials Research Institute of Tengfei group, inadvertently discovered in a certain test that through different fiber gaps and arrangement degrees, micro mirror reflection effect can be formed, reducing the return of radar wave, thus playing an important role After a certain stealth effect, Tengfei group has in fact been incorporated into the key supporting units of the next generation combat aircraft.

At that time, it was the end of the 1980s, and the progress of project 10 was still stumbling. However, the higher authorities had already laid out the systematic pre research of the next generation of combat aircraft. Since then, the research and development ideas of developing, pre researching and exploring the next generation have gradually taken shape.

However, at that time, the overall technology was backward and the scientific and technological conditions were effective. Although some units such as Tengfei group had some bright spots, the overall level was still lower than that of the new generation of combat aircraft.

Even the highlight of Tengfei group is only a theoretical breakthrough in the laboratory, which is far from the practical application. Let's not talk about how to arrange the fiber array and textile of this material, even if it meets the demand, it can't be installed on the aircraft.

According to the requirements of the new generation of combat aircraft announced by the United States, there is a supersonic cruise, and the heat generated by the friction between the aircraft body and the air in the process of supersonic is very high, so the ordinary carbon fiber composite material can not withstand the burning of this temperature.

Therefore, in addition to the stealth function of the material itself, there are also practical problems in the application of the aircraft.

Fortunately, the higher authorities attached great importance to this aspect, especially in the face of the progress of the U.S. F-22 fighter, they stepped up the pace of pre research. They not only selected capable teams from the smoothly progressing project 10 to join the pre research team, but also continuously increased the investment in the pre research projects.

In the early 1990s, the state funding for composite materials of Tengfei group reached 80 million yuan, and increased to 150 million yuan in 1993. After a major event in 1996, the R & D funding increased to 300 million yuan.In addition, the R & D funds of aviation and aerospace departments, local and military departments are all followed up, and the annual high R & D investment of Tengfei group makes the annual R & D funds of Materials Research Institute of Tengfei group no less than 500 million.

At the end of last year, song Yanan's team finally produced a new composite material 3900-2t800 prepreg with high strength and toughness, mirror emission and microwave absorption characteristics, which can be put into practical application.

3900-2 is the label of epoxy resin in prepreg. Only one of these composite materials has ultra-high toughness, and the application of epoxy resin is indispensable. Moreover, according to the different proportion of epoxy resin, it also has different properties of radar wave absorption.

After the test, the 3900-2 epoxy resin can absorb millimeter wave, centimeter wave and other mainstream air defense radar very strongly after high temperature reinforcement. With the unique fiber layout, it can achieve excellent stealth effect.

As for T800, as the name suggests, it is T800 grade high strength medium modulus carbon fiber. Its function is to cooperate with 3900-2 epoxy resin to form the main structure of the whole composite.

With such a powerful thing, the leader of Tengfei group, the understanding king of aerospace industry, the son of heaven's choice in the installation industry, and the naming master, Zhuang Qianjin Jianye, certainly missed this once-in-a-lifetime opportunity, so he hid in the office for three days, and finally came up with a famous name for this new material: h-zb800