Ohain took the lead and came to Xiao Weiguo. With an excited expression on his face, he saw his idol, how could this young college student not be excited, he was about to get his Ph.D., but his jet engine design had not made much progress. So he especially wanted to get some guidance from Xiao Weiguo.

Xiao Weiguo didn't know O'Hain, although he also knew this name in his previous life, but what the 23-year-old O'Hain looked like, how could he know? Seeing this young man standing in front of him excitedly, Xiao Weiguo couldn't help but wonder, this young man was neither a reporter nor a representative of an aircraft manufacturing company, how could he stop himself?

Just when Xiao Weiguo was wondering, Ohain spoke: "Mr. Xiao Weiguo, hello! I am a PhD student in physics at the University of Göttingen, Germany, and Professor Bohr is my supervisor, can I take a few minutes of your time? ”

"O'Hain?" Xiao Weiguo said suspiciously, could it be that the person in front of him, who is as young as himself, is the German who invented the practical turbojet engine in history? But now his appearance seems to have stolen the limelight from this young man, and it is possible to drown him in history from now on. Xiao Weiguo faced the real turbojet engine inventor, and felt a trace of guilt in his heart, he just copied the jet engine technology invented by Ohain, although the wind and thunder jet engine is based on China's turbojet 5 and turbojet 6 engines, but whether it is turbojet 5 or turbojet 6, it is a technology learned from the Soviet Union, without Ohain's invention, the Soviet Union could not have made such a rapid breakthrough in jet engine technology, and there would also be no original version of turbojet 5 - Soviet BK-1φ engine. Because the Soviet jet engine was the first to copy the German BMW003 and Jumo004 engines.

"Yes, Mr. Xiao Weiguo, you don't know my name. This is normal. But I know Mr. Xiao Weiguo's name and have great respect for your achievements. My mentor, Professor Bohr, once said that if there is a real genius in this world, it must be Mr. Xiao Weiguo! The mentor said that Mr. Xiao Weiguo is a real weapons expert, a real entrepreneur, especially in the field of aviation industry. has made a great contribution to our world. Your invention of the jet engine will lead to a revolution in the world's aviation industry. Ohain did not hide his admiration for Xiao Weiguo.

Xiao Weiguo laughed and said, "Mr. O'Hain, you are really good at complimenting!" Is there something you're looking for me? ”

O'Hain nodded and said, "We all saw just now, Mr. Xiao Weiguo, your Dragon Soul Ordnance Consortium sent jets to participate in this competition, so you see that everyone is very interested, of course I am even more interested." Because I'm designing my own jet engine, but you know, I'm just stuck on paper and have a lot of problems to solve. Because I want to get some pointers from you. Do you think it's okay? ”

Xiao Weiguo looked at Ohain with a smile and said, "Really? Mr. O'Hain, why are you so interested in jet engines? ”

Ohain exclaimed: "My interest in aircraft propulsion technology began in the autumn of 1933, when I was still a student, Georg in Göttingen? Auguste studied physics with Professor Bohr and at the same time studied with Ludwig? Professor Plante minored in Applied Mechanics. I was 21 years old and started writing my doctoral thesis in physics, which had nothing to do with jet propulsion. ”

"But the strong vibrations and noise of the propeller piston engines piqued my interest in aircraft propulsion technology. I felt that the natural, smooth and beautiful flight was completely ruined by the reciprocating piston engine that pushed the propellers. I think there needs to be a steady thermodynamic flow process. This process will not cause vibrations. At the same time, compared to propeller piston engines. Engines based on this process may be lighter and more powerful, as the stable flow conditions will allow for a larger mass flow of working fluid over the unit cross-section. I think. In order to achieve higher flight speeds, these characteristics seem to be more important. I made performance estimates for several stable flow field engines and finally chose a special gas turbine configuration, which I thought would be relatively low-risk to develop as a lightweight simple propulsion system. The centrifugal compressor with straight blade radial air outlet and the centrifugal turbine with straight blade radial air intake form the rotor back-to-back. The diameter of the compressor and the turbine rotor are almost equal. This way they are better matched to each other. Do you think this design makes sense? ”

Xiao Weiguo nodded and said: "There is no problem with your design ideas, but considering the reality, then your centrifugal compressor may have a lot of problems." As an aero engine designer, you have to consider not only engine performance and cost, but also the technology at the time. Whether you can realize your design. and whether your design is reliable. I recommend that you do not use a centrifugal compressor, but an axial flow one. It is important to know that air flows mainly in the axial direction in an axial flow compressor. It consists of two parts, a rotor and a stator. It consists of a row of rotor blades and a row of stator blades, and the single-stage pressurization ratio is very small, and in order to obtain a higher pressurization ratio, a multi-stage structure is generally adopted. The axial flow compressor has a small area, high boost ratio and high efficiency. In contrast, the single-stage booster ratio of centrifugal compressor is high, the volume is small, and it is not easy to surge but it is not easy to be affected by multi-stage series connection to reduce the total pressurization ratio of the system, and the efficiency is also low. ”

Xiao Weiguo also has a heart of love, otherwise he wouldn't have said so much to O'Haiin. Xiao Weiguo also knows that attaching importance to talent is the key to the success of an entrepreneur. Take Germany's Heinkel, for example, who worked with two engine experts throughout his life to achieve groundbreaking results. In 1935, he cooperated with the rocket expert Braun to develop a rocket plane, in 1937, the He-112 was developed and successfully tested with a rocket engine alone, and in 1939, the He-176 rocket plane was developed with a speed of 880 kilometers per hour; Cooperated with O'Hain to develop the world's first He-178 with a turbojet engine.

Indeed, Xiao Weiguo began to wonder whether he should invite the original jet engine inventor to work in his company. This will also allow it to give full play to its professional advantages and continue to expand the leading position of the Dragon Soul Ordnance Complex in the field of jet engines. After all, he copied his predecessors, and Ohain relied on his own efforts, so he believed that if Ohain arrived at Dragon Soul Aircraft Manufacturing Co., Ltd., he would definitely be able to make great achievements, and maybe it would be even higher than the achievements made in the original history! (To be continued.) )