Chapter 1428

It's no wonder that the aviation industry group has such an idea. Although the upper level has not allocated any extra money to China's take-off, let alone any extra financial support, the return of the full, sufficient or even excessive conversion of US dollars into RMB is more effective than the effect of fund allocation.

What's more, the annual profit of China's take-off is between us $20 billion and US $30 billion. The profit turned in only accounts for about 60% of China's take-off's foreign exchange earning profit. China's take-off retains about US $10 billion of foreign exchange profit. The money is freely controlled by China's take-off. At the end of the year, it only needs to submit the capital flow to the superior foreign exchange management department.

In other words, China's take-off can purchase all kinds of advanced equipment in developed countries in Europe and the United States without restriction. Compared with that, aviation industry group is much more distressed. Due to its limited foreign exchange profits, it needs to apply for a foreign exchange quota to purchase foreign equipment. If the approval and decision-making time is included, the whole process is cumbersome and can be split directly.

From this, we can see that the upper level still attaches great importance to China's take-off. Based on this, even if the aviation industry group wants to make China's take-off a direct competitor, it can only narrow its edge because of the maintenance of the upper level, and let China's take-off aero-engine high altitude test stand be successfully launched.

However, although the aviation industry group is biased towards China's take-off of all kinds of lemonade, it also feels that China's take-off is bound to become the life and death enemy of the whole aviation industry group. Fortunately, the aviation industry group has won the decisive victory in the big thrust heavy-duty aero-engine game.

Based on this, we can directly lay the basic pattern of the domestic military combat aircraft field in the next 20 to 30 years. China's take-off still can only do supporting, and the aviation industry group is still leading as it is now.

The reason why the leadership of aviation industry group made such judgment is based on the basic judgment that China's take-off stepped into the pit of aeroengine high altitude test bed and the ultra long development cycle of high thrust aeroengine.

You should know that the aero-engine high altitude test bed of the aviation industry group was planned in the late 1950s and started to be built in the 1960s. It took 30 years to complete the super large project in the 1990s. The first aero-engine high altitude test bed in China was completed after two generations of hard work.

In particular, we can see the complexity and difficulty of this thing.

Even if China has sufficient funds, it is almost impossible to complete it in a short time. Even if it works overtime, the whole construction cycle will take 8 to 10 years to achieve results.

The problem is that the al-31 heavy-duty aero-engine imitation project of aviation industry group has already come to fruition. Even if China's take-off is fierce, it will take five to eight years to complete the 20-year development cycle of high thrust aero-engine.

In this way, before and after, without a generation's time, China's take-off will not be able to make any achievements in the high thrust aero-engine.

It is because of this that the aviation industry group has taken off China's aero-engine high altitude test bed and carried the "Lancang River" model. It's very delicious, but it doesn't pay much attention to it, because the basic law of aero-engine is there. Unless it's an alien appendage, even the Americans can't get rid of the influence of this powerful law.

However, at this moment, Tang Lili's "Lancang River" high thrust aero-engine on the screen shows that it is not a conceptual design, but a mature product that should be tested for a long time, because what is displayed on the screen is not a conceptual design drawing, but a perspective detail drawing created with real pictures.

You know, it's only two years since China took off's aero-engine high altitude test bed was completed, and China took off has launched the Lancang River project?

How could that be!

However, the surprise, amazement, bewilderment, doubt and disbelief in the meeting did not affect Tang Lili's calm tone on the stage. Instead, she adjusted the remote control. The aero-engine on the screen rotated and quickly decomposed, leaving behind a core machine composed of combustion chamber, primary turbine and secondary turbine. Then she put a laser pen on it: "maybe someone will ask, How can our Lancang River project progress so fast and whether its maturity will not be high? Here I'll make sure that the maturity of our wd-72e Lancang River high thrust aero engine is very high, because the technologies used in it are all mature technologies that China has taken off and polished for many years.... "

With that, Tang Lili drew a circle on the core machine and said: "for example, our hx-30-27 core machine belongs to the typical third generation core machine. Compared with previous generations of single rotor core machine, the third generation core machine adopts a dual rotor structure and adds a second-stage turbine at the back, so as to improve the overall power of the core machine.

At the same time, through the application of advanced heat-resistant materials and other related technologies, we have increased the turbine front temperature of the third generation core aircraft. At present, the turbine front temperature of hx-30-27-c core aircraft equipped with wd-72e "Lancang River" high thrust aero engine is 1873.15 Kelvin, that is 1600 degrees Celsius, so that our third generation core aircraft has 27 megawatts of cycle power... "

Before the voice fell, Tang Lili pressed the remote control again, and the core machine on the screen was disassembled again. Then Tang Lili lit several parts with a laser pen and continued to introduce: "the excellent performance of hx-30-27 core machine is not built up by any new technology. On the contrary, many of the materials and technologies are mature products of China's take-off and polishing for more than ten years.

For example, the h-zb-618 high-performance ceramic matrix composite used in the combustion chamber is based on the zbf-600 experimental ceramic material developed ten years ago. At that time, the experimental material can withstand the high temperature of 1450 ℃, and was tested on our 2.5 generation core machine. Later, with the further improvement of our technology in the preparation of ceramic matrix and metal support body, the h-zb-618 high-performance ceramic matrix composite can withstand the high temperature of 1450 ℃, The material has been put into production, and has been widely used since it was named h-zb-600 series.

The wd-66 series aeroengines used in fbc-7a and j-8e use h-zb-600 series ceramic matrix composites in different degrees. On this basis, we summarize the experience and data of h-zb-600 series, and develop h-zb-618 high performance ceramic matrix composites with better performance, As the main material of the combustion chamber of hx-30-27 core engine, the combustion chamber has the ability of continuous high temperature resistance at 1800 ℃ and the ultimate high temperature resistance can reach 2200 ℃

"Comrade Tang Lili, the continuous high temperature resistance of the combustion chamber of hx-30-27 core engine is 1800 degrees centigrade. At present, the temperature in front of the turbine is only 1600 degrees centigrade. In other words, there is still room for improvement of hx-30-27 core engine?"

Before Tang Lili finished speaking, a Navy leader could not help but ask. Tang Lili nodded with a smile: "of course, otherwise the next generation of combat aircraft will have heart disease again?"