Yang Jie knows that the F110-GE-129 is a low-risk derivative technology adopted by GEGE, inheriting the high reliability of the F100, using 81% of the components in the F100, with the movement of the throttle stick in the flight envelope without any constraints and without stalling, and has an extremely high cycle life, and the fighter using it has the best safety record and high attendance rate among single-engine fighters.

It can be said that the Japanese chose the core engine of this engine as the basis for research and development, but if the Japanese want to make changes on this basis, it is another matter, unless the Japanese imitate this engine as it is to achieve the performance of this engine more than 20 years ago.

But according to the personality of the Japanese, they obviously don't do that.

In fact, before this, Japan's Ishikawashima Harima Heavy Industries began research and development two years ago, and the official launch of the XF program this time is also based on the company's research and development.

According to the information obtained, the XF5-1 compressor will change the 9-stage compressor of the F110 to the 6-stage compressor, and desperately raise the temperature of the hot end parts of the flame barrel to the same level as the 1690 degrees Celsius of the American F119, which is also the best trick in Japan.

The Japanese are indeed very good at monocrystalline high-temperature materials, and they use a large amount of rhenium metal in the hot-end components in order to achieve higher engine efficiency by increasing the temperature of the hot-end components.

But the aero engine is not only to increase the temperature of the hot end, in order to achieve the best performance of the aero engine, how to control the intake flow and improve the compressor boost ratio of the two factors are also indispensable, these three aspects are equivalent to the three woodblocks on the bucket, which board is longer, correspondingly it seems that the other boards are shorter, and the result finally determines how much water the bucket holds, the shortest board.

Japan's desperate efforts to raise the temperature, although it is conducive to increasing the thrust, but it has brought great pressure to the development of heat-resistant materials for engines and the design of cooling systems.

The higher the temperature, the more difficult and complex the engine cooling system design, and the more complex the system, the more likely it is to fail, which poses a great challenge to the reliability of the engine.

The development of aero engines is a matter that involves the whole body, and the R&D team can only become mature through the research and development of at least two engines, and the time span will take at least ten years, and the Japanese are now just starting out.

The Japanese are still very strong in combustion chamber research and have participated in the design of complex combustion chambers at GE, but they have no experience in designing combustion chambers independently.

Moreover, the Japanese have to look at the eyes of the Americans, it can be said that they have no experience in independent research and development of aero engines before, and there are no great talents in the aerodynamic design of aero engines, so they cannot design a wide-chord blade technology with higher efficiency to design a fan to increase the flow rate, because increasing the fan diameter to increase the intake air flow will increase the resistance and reduce the high-speed performance of the engine.

At the same time, the R&D team changed the compressor to six levels, which proved that the Japanese were very lacking in the technology of designing compressors, and did not dare to rashly increase the pressure ratio to the level of GE, because the higher the pressure ratio, the greater the working pressure of the compressor manufacturing, and the compressor would have surge, so the Japanese had to reduce the pressure ratio.

The reason why Yonghan Airlines was able to design a high-performance aero engine was that he found a group of experts with rich experience.

Wang Yonglin himself has worked in Rolls-Royce for more than 20 years, participated in the design and development of almost seven or eight engines, and is very clear about Rolls-Royce's production standards.

Konstantin has strong theoretical and design experience in combustion chamber research, and is a major participant in the fourth generation of core aircraft, from which the core aircraft structure of Yonghan Aviation Technology Co., Ltd. is derived.

Liu Fuping is a genius in material design, and has worked in Honeywell for more than 20 years, and has extremely solid theoretical and design experience.

At the same time, the company has also recruited a group of experts with rich experience in aerodynamic design from China to form a very strong technical team.

At the same time, the Machine Tool Research Institute also provides precision processing equipment and technical support and personnel support for Yonghan Airlines, and at the same time, with a set of scientific and rigorous production standards, it is not easy to design and manufacture the engine.

Up to now, Yang Jie has invested nearly 40 billion yuan in the research and development of aero engines, and it is only this year that he has achieved break-even and will be profitable next year.

Although there is no need to invest as much money in the construction of hardware and software as before, Yang Jie still plans to invest no less than 3 billion yuan in technology research and development every year, so as not to crowd out the capital chain needed for the company's own operation.

Because the cost of domestic research and development is at least several times lower than that of foreign countries, it takes at least one billion dollars to develop an engine abroad, and China can basically complete it with two billion Chinese dollars.

Comparatively speaking, Japan's research and development of an engine from the design to the prototype after the ground bench test, high-altitude platform test, long-lasting test test, cycle test, engine test platform test, target prototype installation test and a series of tests, at least ten years, a variety of test platform plus the development of the engine itself can not bear tens of billions of dollars.

All this has to be a very smooth situation, the current Japan lacks experience in the development, testing and use of aero engines, will encounter more problems and obstacles than the United States, Russia and other old aviation development powers, whether it can be successfully developed and put into service as scheduled, it is still an unknown now.

In the memory of the previous life, the XF5-1 engine took almost eight or nine years to build, the thrust is very small, only five tons of thrust, with a bunch of high-tech to create a low-performance engine, and frequent failures, derived from this core engine a large bypass than turbofan engine XF7-10 thrust is only more than five tons, and during the test flight, there was a bizarre failure that all 4 engines stopped working, which shows how poor Japan's design ability in aero engines is。

Moreover, after the engine is built, it needs the support of the flight platform, and the Japanese military has purchased a very small number of engines, reaching five or six hundred units, while the civilian ones will have to wait until Japan's domestically produced passenger planes come out, and it will be a problem whether to sell them or not.

The reason why the weapons and equipment installed in Japan's self-defense fleet is also because of this reason, and the production is too small to dilute the cost.

The 90-seat Mitsubishi regional jet, the first domestic jetliner developed by Japan, has been delayed five times for more than ten years, and each is as high as 200 million US dollars.

So when he heard about these plans of Japan, Yang Jie did not have the slightest wave in his heart, but the world is unpredictable, who knows if the Japanese will do their best to speed up these processes if they are forced to be in a hurry, this possibility is also there, he can only order the intelligence department of the secretariat to keep an eye on these things.

What Huaxing Group has to do is to do its own products and services well, which is the most important thing.

At present, the aircraft delivered by Huaxia Fokker Company is priced at 22 million US dollars after being discounted by airlines, which is five or six million US dollars cheaper than similar models after a 7% discount, so it not only sells very well in China, but also gets a lot of orders abroad.

Now the reserve order has increased to more than 700 aircraft, and most of the new orders come from overseas airlines, many of which are old customers of Fokker.

This time, Yang Jie went to Paris, France to participate in the Paris Air Show, and Fokker wanted to take this opportunity to announce to the world that Fokker had returned to the aviation industry, and a few months ago he also got the opportunity to perform the Fokker F100 flight show from the exhibition organizer, and also to get more orders.

Meixihu University has begun to take vacation, and this time Yang Jie also took Bai Bing and his parents and father-in-law to Paris to participate in the exhibition, and also to play in Europe.