As the father of Huaxia Airlines, Qian Lao has been paying attention to the development of aviation technology in various countries in the world since returning to China from the United States.

However, in the past ten years, the almost completely closed China has made it difficult for Qian Lao to understand the aerospace technology of developed countries in Europe and the United States, and it can be said that there has been a fault.

Now I can hear Yang Weiping's introduction and comparison of the various comprehensive performance of the third-generation fighter engine, which makes Qian Lao feel extremely cool after a long drought and nectar.

"Wei Ping, according to what you just said, what kind of development path do you think China's fighter engines should take?" Qian Lao looked at Yang Weiping with a kind smile with a kind smile.

With the accumulation and precipitation of Qian Lao's knowledge in aviation power and materials, with just a little allocation, he has laid out a clear blueprint for China's future aerospace industry in his heart. He now wanted to know whether the talented young nephew in front of him had seriously thought about the overall situation.

Speaking of his strongest field, Yang Weiping naturally did not give birth to the mentality of the class to get the axe, completely with a mentality of equal communication, looked at Qian Lao, and said calmly: "If China wants to catch up with and surpass the developed countries in Europe and the United States in a short period of time, the first thing is to make the whole country play a game of chess, and comprehensively promote the development of the country's industrialization process, so that China can have a relatively complete basic industrial system in the four lines of low, medium, high and cutting-edge."

As far as the cutting-edge industry of national defense aviation is concerned, China's fighter engines must first work hard in terms of materials. Reducing density, increasing strength, and reducing the mass of engine components are very heavy for increasing the thrust-to-weight ratio of fighter engines. The most direct and effective way is to use lighter materials. Therefore, the materials used in fighter engines must be developed in the direction of low density and high strength.

At present, developed military powers in Europe and the United States have gradually replaced steel, titanium alloys and nickel-based alloys with resin matrix composites, metal matrix composites, and titanium-aluminum intermetallic compounds. It is used in the manufacture of cryogenic components such as turbofan encapsulation casings, turbofan rotor stator blades, engine nacelles and thrust reversers.

Resin matrix composites, metal (titanium, nickel) matrix composites, and titanium-aluminum-nickel-aluminum intermetallic compounds will replace titanium alloys and nickel-based superalloys for medium-temperature components such as compressor rotor blades, compressor integral leaf rings, engine low-pressure shafts, compressor stator blades, casings, exhaust nozzle actuators, and connecting rods of adjusting plates.

The next generation of high-temperature alloys, nickel-aluminum-metal intermediates, advanced thermal barrier coatings, and ceramic matrix composites will replace nickel-based superalloys for high-temperature components such as combustion chambers, turbines, afterburners, and nozzles.

The replacement of these types of advanced materials will significantly increase the thrust-to-weight ratio of fighter engines. According to the internal information of General Motors of the United States, which I know, the TF39 engine uses 386 resin matrix composite parts, with a total mass of 84.4kg, accounting for 3% of the total mass of the engine. By replacing G's metal parts, the weight of the parts is reduced by 35% and the cost of parts is reduced by 30%.

CF66 and CF650 engines. 285 resin matrix composite parts with a total mass of G, accounting for 4% of the total mass of the engine, were used to replace the metal parts of G. 35% reduction in part quality and 30% reduction in part cost.

General Motors is now developing military engines such as F404, F414, F110GE132, F136, as well as civilian engines such as GE90115B and Genx; Pratt & Whitney is developing military engines such as F119 and F135 and civil engines such as PW4084, PW4168 and PW8000; Rolls-Royce Trent700, Trent800, Trent900, Civilian engines such as the Trent 1000 are planning to use more resin matrix composite parts.

The United States' "Comprehensive High-Performance Turbine Engine Technology Plan" is in the IHPTET research plan announced by the outside world. Stationary components such as the outer culvert casing of the IHPTET research plan made of AFR700B matrix composites were verified and prepared for use in the F119 engine. …,