Chapter 307: The Choice of Jet Engine: Centrifugal vs. Axial Flow (Part II)

Jet engines were divided into two distinct branches in World War II, namely centrifugal jet engines and axial jet engines.

The so-called centrifugal type is the use of a special centrifugal compressor, is the use of a special centrifugal compressor, the air flow into the engine is compressed, and thrown to the combustion chamber distributed around, through ignition heating, the formation of high-temperature gas, so as to form the driving force of work.

In the axial jet engine, the air flow naturally flows into the engine along a fixed axial direction, and then the incoming air is pressurized by a high-speed rotating compressor, injected into the combustion chamber for ignition heating, and finally forms a high-temperature jet heat flow to complete the normal operation of the engine.

If there is a misnomer to describe the two types of jet engines, then the centrifugal engine is like a blower, providing airflow and pressurizing itself; Axial engines, on the other hand, are more like exhaust fans, absorbing a steady stream of airflow and pressurizing and heating along fixed channels......

These two different types of jet engines, if placed in a few decades is estimated that there will not be even the least controversy, because the unique structure of the two has been destined, the axial flow type has greater application potential than the centrifugal type, and it is a new type of turbofan engine with a large thrust-to-weight ratio developed by the major military powers, all of which adopt the axial flow structure.

But the problem is that at this moment is the beginning of 1951, a jet fighter has just started, the two engines are indistinguishable era, the most typical is now on the Korean battlefield, from the peak duel between the MiG-15 equipped with centrifugal engines and the F-86 equipped with axial flow engines, it can be seen that there is no essential difference between the two different styles of jet engines.

Because of this, the debate about centrifugal vs. axial flow has also continued from the Second World War to the present, but the protagonist has changed from the secret competition between Britain and Germany in person to the competition between the Soviet Union and the United States today.

Artem Mikoyan is on this path, having repeatedly hit a wall and been unknown since the Second World War; To this day's fame and becoming the first brother in the field of Soviet fighter aircraft development, Artem Mikoyan not only has a good brother to help him, but also because he has mastered the word "fast".

If he hadn't rushed to work overnight and took the lead in testing the MiG-9 fighter before the Lavochkin Design Bureau, he would not have taken the lead in taking the lead in the Soviet jet fighter; After that, we continued to make persistent efforts and used the same method to preemptively complete the design work of the MiG-15, resulting in the defeat of the new Lavochkin jet fighter with similar performance.

At this point, the sudden emergence of the MiG completely drove Lavochkin out of the field of fighter design and became the new hegemon of the Soviet fighter development, but the hegemony of the MiG is not very stable, there is no way, there are too many Soviet aviation talents, in addition to Lavochkin, there are Yakovlev, Sukhoi, Ilyushin, Tupolev, Myashev......

It can be said that the competition in the entire Soviet aviation field is very fierce, and if you are not careful, you will be like Lavochkin, completely knocked out of the dust, based on this, Artem Mikoyan, in addition to holding his brother, is to use the advantages he currently has to constantly introduce new models.

From the starting MiG-9 to the MiG-15 in the fierce war against North Korea, from the MiG-17 in test flight, to the I-360 program that is now being developed, Artem Mikoyan and his MiG Design Bureau took only eight years, that is, every two years, the MiG Design Bureau launches a new jet fighter.

This kind of speed of innovation is not far behind the super-fast mobile phone industry in later generations, which shows the extent to which the MiG Design Bureau has used the word "fast".

Of course, there are certainly opportunities for the great development and renewal of the aviation field; There is also the element of desperate competition with the hostile Western world; But it is undeniable that Artem Mikoyan must have his own unique method, otherwise he would not have stood out from so many brilliant and meritorious pilots.

And this unique method is not the side, it is the use of a large number of mature technology, especially in the most time-consuming aero engine, from beginning to end the use of the British "Nion" aero engine to improve the centrifugal jet engine, the reason for this, no other, only because the type of engine technical difficulty is low, the structure is simple and easy to understand, the production and manufacturing is convenient and fast, the overall performance is durable, the work stability is stable and efficient, it is simply a tailor-made machine for rapid production.

Because of this, when the MiG began the I-360 program, Artem Mikoyan did not think that the centrifugal jet engine, which could be produced quickly, was set as the power source of the new fighter, and if one thrust was insufficient, then two would be directly put on it, in short, it was necessary to complete the task of the new fighter as quickly as possible.

As a result, when his request was sent to the Klimov Design Bureau, which had been supported by him, he was opposed by Klimov, the chief designer of the aero engine, on the grounds that after his calculations, the axial engine would be more suitable for the new fighter of the future than the centrifugal engine.

For this reason, Klimov can be said to have done his best, talking about the benefits of axial engines in a vacuum, although Artem Mikoyan was not happy in his heart, but because he was not an expert in aero engines, he no longer insisted, but just acquiesced to Klimov's axial engines.

It wasn't until today, at the invitation of his brother to join the expert group for the evaluation of new technologies, that Artem Mikoyan realized that he had been tricked by Klimov, and he immediately became angry and pulled Klimov directly to ask him to explain.

Where would Klimov have thought that a Germany that insisted on axial jet engines would change its grip and turn to centrifugal engines, especially a sentence in the photo, which tickled the itch of most of the Soviet military-industrial experts and high-level officials:

"The centrifugal jet engine is more suitable for large-scale warfare because of its simplicity, and if Germany had realized this idea in 1943, perhaps it would not have focused on the incomparably complex axial engine, and the war would not have been so tragic......

The problem is that the author of this book is Alfred Luke, the actual person in charge of German military production during World War II, and the real leader of the "Doomsday Project".

Klimov was very skeptical about the authenticity of this treatise, but in the face of Artem Mikoyan's aggressive eyes, he still gave up the least conscience and chose to submit to power, so he nodded heavily: "Don't worry, my dear Comrade Mikoyan, when I go back, I will adjust the work of the design bureau and put the improvement of centrifugal jet engines in the first place!" ”

"Well, be quick!"

Artem Mikoyan nodded silently when he heard this, and then got up, ignoring the melancholy Klimov, and walked briskly towards his brother's place......