Songzhou City, a teahouse.

Li Tianfeng and Yang Xianfeng are chatting while drinking tea, because today is the weekend, and they don't have to be busy at work, both of them have time to drink tea here and chat.

Yang Xianfeng said: "Mr. Li, I asked you out this time, and I didn't delay your rest, right?" ”

Li Tianfeng smiled and said: "No, drinking tea and chatting is also a kind of rest." ”

In the private room, there are only two people, and there is no third person, plus the relationship between the two is good, the chat is also very relaxed and happy, southeast and northwest, everything is discussed, of course, it also talks about the current situation of today's aviation industry, the development trend, especially the domestic aviation industry A lot of topics.

After chatting for a long time, Li Tianfeng said: "Mr. Yang, I heard that there was a little accident in the personnel change of your factory? ”

Yang Xianfeng took a sip of tea and said: "I will be the general manager of Plant E, Comrade Liu Qingshan will take my place and become the chief engineer of Plant E, and as for the chairman, he will be parachuted from above and will take office tomorrow." ”

Tomorrow is Monday, and the new leader of Plant E has arrived. In a large state-owned factory, the chairman is the first leader, the general manager is the second in command, Yang Xianfeng is not the first leader, and he is the general manager, judging from Yang Xianfeng's expression, he seems to be relatively satisfied.

Li Tianfeng said: "Mr. Yang, congratulations, the position of general manager is a big step forward compared to before. ”

Yang Xianfeng said: "The position of the manager is a position for me to do a better job, and I am personally quite satisfied." ”

Li Tianfeng said: "Mr. Yang, it seems that you are ready to do a great job, and you have the determination to make Factory E look new and go to a big level." ”

Yang Xianfeng smiled.

It's just that Yang Xianfeng is far from thinking that the airborne chairman is not a good stubble, a typical layman guiding an insider. made Yang Xian plump is a nest fire, giving birth to a lot of waves, naturally, this is a later story.

After the two chatted for a long time, Yang Xianfeng said: "Mr. Li, I heard that you are going to outsource some non-core processing business for processing?" ”

Li Tianfeng nodded and said, "With the start of mass production of the turbofan 16." The turbofan 17 engine is also designed and finalized, and in the future, before our Qingshi manufacturing base is officially put into use, Tianfeng Technology Company will be very busy in production. ”

Li Tianfeng means that some general parts, which have a slightly lower technical content and do not involve core secrets and technical parts, will be tendered and entrusted to some powerful machinery manufacturing enterprises outside for processing. This can reduce the production and manufacturing pressure of Tianfeng Technology Company.

The international industry and trade branch of Tianfeng Technology Co., Ltd. has also pulled a large number of parts processing business from the outside, but such parts processing technology content is high and the profit is high, and now the parts to be commissioned for processing are the general parts on the turboshaft D and turboshaft E engines, and the structure is relatively simple. Parts that are relatively easy to machine.

The list of parts has been drawn up by Li Tianfeng. Relevant processing technology agreements, confidentiality agreements, quality agreements, etc., Tianfeng Technology Co., Ltd. is in the process of drafting.

Yang Xianfeng said: "Mr. Li, it's really thirty years in Hedong and thirty years in Hexi." A few years ago, at the beginning of the establishment of Tianfeng Technology Company, you were looking for processing business everywhere, and a few years later, today Feng Tianfeng Technology Company has a lot of parts processing business to be processed outside. ”

Li Tianfeng also sighed slightly. Recalling the original situation, it is not very embarrassing, at the beginning of the establishment of Tianfeng Technology Company, because the turboshaft D engine had only begun to be developed, far from manufacturing, Li Tianfeng was trying his best to find a large number of processing business from the outside.

…………

Tianfeng Technology Co., Ltd., Commissioning Engineering Center.

Just now, Li Tianfeng watched the 300-hour long-lasting verification test of the turbofan 17 engine with satisfaction, and the test run is nearing the end.

The turbofan 17 engine has completed a series of factory validation tests, including a 150-hour long-term verification test, and is now undergoing a 300-hour long-term verification test before obtaining the design certificate.

Together with Li Tianfeng, Sun Xiaoping, the general model designer of the turbofan 17 engine, came to the second workshop of the test engineering center to see the engine test situation. At this moment, the two were chatting while walking out of the second test workshop.

Sun Xiaoping said: "Boss, it seems that the test will be very smooth." ”

Li Tianfeng nodded and said, "After the 300-hour long-lasting test run, we will assemble two more turbofan 17 engines for the flight test of the ARJ21 aircraft." ”

The ARJ21 regional airliner will be powered by two turbofan 17 engines, which will be installed on the ARJ21 regional airliner for a series of tests and validations.

Sun Xiaoping said: "Boss, if the construction of our high-altitude platform is completed, there is no need to be so troublesome, many test flight verifications can be carried out on the high-altitude platform, and it is not necessary to load the aircraft for test flight." ”

Li Tianfeng nodded, and looked at a huge construction site in the distance, which was the construction site of the high-altitude test bench, and the construction was already underway.

The high-altitude platform is the abbreviation of the high-altitude simulation test bench of the aero engine, which is a system equipment that simulates the flight conditions and environment of the aircraft engine in the air on the ground, and conducts high-altitude simulation tests on the whole engine and components, and is also an indispensable means for the development of advanced aero engines and their improved modifications.

At present, there are only five countries in the world that have high-altitude platforms, namely the United States, Britain, Russia, France, and China, and China is the fifth country with advanced aero engine research and development equipment systems and technical means after the United States, Britain, Russia, and France.

Tianfeng Technology Company is also preparing to build a high-altitude platform, and is already designing it.

In terms of design, Li Tianfeng gave overall guidance and control, and Sun Xiaoping led the technical team to implement it. The construction of the high-altitude platform is naturally much longer than the ground test platform cycle of the turbofan engine, no, it is still under construction, and Li Tianfeng often comes to see the construction of the high-altitude platform.

Li Tianfeng said: "The construction of our high-altitude platform can be regarded as a stumble, but there is finally good progress." ”

Sun Xiaoping said: "Mr. Li, if you hadn't solved a lot of key technical problems, the construction of our high-altitude platform might not have been so smooth." ”

Li Tianfeng said: "Mr. Sun, it is estimated that in another one or two years, the construction of our high-altitude platform should also have certain results." ”

Sun Xiaoping rubbed his hands slightly excitedly, and said excitedly: "Boss, if our high-altitude platform is successfully built, what a great thing it will be!" ”

Li Tianfeng nodded and said: "Then for sure, such a high-altitude platform with such a technical content has been successfully built in our Tianfeng Technology Company, and we feel that our waist is much straighter when we go out, and our face is also more face-saving, and the key is to enhance the core competitiveness of our company." ”

In Li Tianfeng's plan, after a few years, Tianfeng Technology Company will definitely go abroad and enter the international market, and will compete with the world's aero engine manufacturing giants on the same stage to carry out fierce business competition.

Li Tianfeng has high hopes for the construction of the high-altitude platform, and not only personally formulated the technical plan, but also personally solved a large number of key technical problems.

The aero engine high-altitude simulation test bench should not only simulate the environmental conditions of the altitude and speed of the aircraft flying at high altitude on the ground, but also simulate the stable state of the aircraft and the various distortion flow states of the engine inlet formed in the air combat maneuver flight.

The airflow of different flow rates and temperatures forms relative motion with stationary engines, or rushes to the war zone at high altitude and high speed; or low-altitude high-speed flight through the enemy's air defense positions; Or wait for the Mach number to climb and occupy the commanding heights of aerial dogfighting......

Different "pressure distortion" air intake devices and pass guò system equipment artificially establish various working environments in the air of the engine in the full flight envelope, and evaluate and identify the design indicators and combat performance of the engine.

In the research and development of advanced aero engines, a large number of tests must be carried out on the high-altitude simulation test bench of aero engines to analyze, study, verify and evaluate the performance, function, acceleration and deceleration characteristics, working stability, air start special afterburner connection characteristics and the working performance of lubricating oil and other systems of aero engines and their components.

The high-altitude simulation test can effectively verify the technical scheme and provide technical support for the development of efficient power system. High-altitude simulation test is the most effective way for aero engine design, improvement and modification, technical research, fault reproduction and elimination.

The high-altitude platform is very important, Li Tianfeng also attaches great importance to it, and Li Tianfeng also spends a lot of energy, and often comes to take a look.

Now, the construction of the high-altitude platform is far from complete, and it may still face a series of key technical problems, without Li Tianfeng's guidance, Sun Xiaoping would never have this self-confidence.

In addition, because there is no high-altitude platform, Tianfeng Technology Company's engines, such as turbofan 16 engine, turbofan 17 engine, must be installed on the aircraft, in the field for flight test and verification, only after a series of flight test qualified, the engine can be officially mass-produced.

Turbofan 16 engine, mainly installed in the Yun-8K, C919 two aircraft for flight test verification, after several months of test flights, especially the Yun-8K aircraft, a series of test flights were basically completed, the results are very good.

After completing 300 hours of sustained testing of the turbofan 17 engine in the factory, two more prototypes will be assembled for the test flight of the ARJ21 regional airliner.

For the turbofan 16 engine, because it has entered mass production, Li Tianfeng is more assured, and although the turbofan 17 engine has obtained the design certificate and basically completed a series of factory verification tests, the field flight test verification has not yet been carried out.

Li Tianfeng confidently promised Mr. Lin of AVIC Group at the beginning to ensure that the batch delivery of turbofan 17 engines would be realized by the end of the year, and naturally he could not break his promise.

………

Today's three watches, the first one is sent! (To be continued......)