Chapter 45 Atomic Engine (4)

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"Really, since both of you are full of one bottle and half a swallow, then let me teach you two a lesson!"

Zhao Zhongyao knew a long time ago that Chen Yuan and Cheng Fei would deliberately make things difficult for him on their first day at work, so he had already read some information about aerodynamics last night.

Now Chen Yuan and Cheng Fei are really mocking him! Zhao Zhongyao also responded to them bluntly.

Anyway, Zhao Zhongyao was also a top scientist in the 21st world before his death. Even though I haven't studied the theory of airplanes, I still know some knowledge about it.

Because the planes of the era before his death were already very advanced, much more advanced than the planes in this parallel space where he was reborn.

Aircraft in this era are only equivalent to the level of the 1970s and 1980s on the earth when he was alive.

"Okay! Mr. Zhao, hurry up and talk! We both are willing to listen!" Chen Yuan and Cheng Fei glanced at each other, and they were both secretly laughing!

"Well! Then listen carefully, my theory will definitely scare you a lot." Zhao Zhongyao got up from his desk, walked to Chen Yuan and Cheng Fei, and then glanced at them with historical eyes They glance.

Both of them were a little timid in their hearts. After all, they were just Zhao Zhongyao's assistants. If they didn't give themselves leadership face, it wouldn't do him any good.

The two of them didn't dare to say anything now, they just pretended to listen carefully.

"The so-called aerodynamics is the study of the problem of the air viscosity of the aircraft in the air, in other words, how the aircraft overcomes the air resistance and then flies in the air.

To learn aerodynamics well, you must first understand some basic knowledge.

These basic knowledge, the most important point, is to know what air is.

All life on our earth lives in the air, and air is the first condition for our survival.

The main components of air are nitrogen and oxygen. Nitrogen makes up about 78% of the atmosphere. Oxygen accounts for about 21% of the composition of the atmosphere, and some hydrogen, helium, ------ about 1%.

In this way, the most important gas in the air is nitrogen. But what humans depend on for survival is not nitrogen, but oxygen.

Not only do we humans need to breathe oxygen to survive, but even cars running on the surface of the earth and airplanes flying in the sky need to breathe oxygen. Without oxygen, these iron guys wouldn't move at all.

However, oxygen decreases as the altitude increases, and the oxygen content on the plateau is much less than that on the plain.

In the atmosphere, only the troposphere contains a large amount of oxygen, and in the stratosphere, the oxygen content is already very scarce.

Ordinary airplanes can only fly in the troposphere, and only airplanes made with jet-powered engines can fly above the stratosphere.

Due to the abnormal air flow in the troposphere, there is no fixed route, and there are often severe weather such as storms and lightning. Therefore, ordinary aircraft can only fly when the weather is good, and they will be banned when encountering bad weather.

Above the stratosphere is the ionosphere. The temperature in this layer is very high, with an average temperature above 400 degrees Celsius. It can reach a maximum of one thousand degrees. The air here is all ionized.

It is impossible for ordinary aircraft to fly to this height. Only special space shuttles, spaceships, and space probes can fly over this space.

Above the ionosphere is the exosphere.

This is the outermost space of the atmosphere, and the air density is extremely small. The temperature is also very low, and it is impossible for any aircraft to fly to this space, only spaceships can fly to the interplanetary space from here.

Knowing the composition and composition of the air, we will know that the most suitable altitude for an airplane to fly is above 10 kilometers. Here is the stratosphere, the atmosphere is very stable.

But the air here is thin and the temperature is very low, generally around -56 degrees Celsius. A normal engine simply won't work here. It is only possible to work here with advanced gas turbines.

Therefore, we want to study more advanced aircraft, mainly to study a more advanced engine.

For any vehicle on earth, the engine is the most important component. The engine is their heart. Without an engine, any vehicle is a pile of scrap metal.

Of course, for aircraft, the shape design is also very important. As I said before, because in the troposphere, the air density is different, so the air layer is formed. When an airplane flies between air layers, it will be affected by the viscosity of the air.

If an airplane wants to fly fast and stably in the air, it needs to design a shape that reduces the viscosity of the air. For example, we designed the shape of the wing of the aircraft into the shape of a bird's wing, which is exactly the principle that the air viscosity can be reduced when the bird is flying.

But in any case, if the plane wants to fly from the ground, it is impossible to do it without an engine. When flying in the air, the engine is always required to work normally. If the engine fails, the plane will fall from the sky like a pile of scrap iron.

Therefore, when we study aircraft, we mainly study engines. Only by improving the engine can the aircraft be truly improved. If you don't improve the engine, just improve the shape, it won't do much at all.

Take for instance the need to overcome air viscosity! Improved shape is to help reduce air resistance. But this is not the fundamental solution, if

It can improve the power and performance of the engine, and increase the driving force of the engine, so what is the viscosity of the air!

Well, that's all I have to say! I don't know if the two of you have gained anything after listening to it! "

Zhao Zhongyao explained in detail the composition of the air and how the aircraft flies in the air, and pointed out that the development of new engines is the key factor to improve the aircraft.

After hearing this, Chen Yuan and Cheng Fei were a little stunned. Originally, they thought that Zhao Zhongyao knew aerodynamics at all.

Unexpectedly, these two experts have never heard of these explanations. They have never heard of new terms like spaceships and space shuttles. I don't understand at all how Zhao Zhongyao knew.

"Oh! Mr. Zhao, what you said is really good. We didn't expect that Mr. Zhao is an all-rounder! Not only does he know the knowledge of atomic bombs, but he also knows so much about aircraft manufacturing and aerodynamics!"

From the bottom of his heart, Chen Yuan respected the young man in front of him.

"Yes! Mr. Zhao, now I finally understand that sentence that the ancients said! 'Listening to the king's words is better than reading ten years of books'!" Cheng Fei also admired Zhao Zhongyao very much, and felt that Zhao Zhongyao really It's a well-deserved reputation!

"Mr. Zhao, since you know so much about the power of airplanes, I have a proposal. I don't know whether Mr. Zhao is willing to listen to it!" Chen Yuan looked at Zhao Zhongyao, with an imperceptible and weird smile on the corner of his mouth.

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