Chapter 45 Atomic Engine (4)

"yes, since you both are less than half a swallow in a bottle, then I'll teach you both a lesson!"

Zhao Zhongyao had long known that Chen Yuan and Cheng Fei would deliberately embarrass 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 unceremoniously hit back at them.

No matter what, Zhao Zhongyao was also a top scientist in the 21st world before his death. Even if I haven't studied aircraft theory, I know a little bit about it.

Because the planes of his lifetime were already very advanced, much more advanced than the planes in this parallel space that he was reborn.

The aircraft of this era is only equivalent to the level of the seventies and eighties on the earth before his death.

"Okay! Mr. Zhao, you can say it quickly! The two of us are willing to listen to it!" Chen Yuan and Cheng Fei glanced at each other, both secretly laughing!

"Well, listen up, my theory will scare you. Zhao Zhongyao got up from his desk, walked in front of Chen Yuan and Cheng Fei, and then glanced at them with a glance.

Both of them were a little timid in their hearts, after all, they were just Zhao Zhongyao's assistants, and if they didn't give themselves face as a leader, it wouldn't do him any good.

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

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

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

The most important thing to know about these basics is to know what air is.

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

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

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

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

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

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

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

The troposphere has no fixed route due to abnormal air flow, and severe weather such as storms and thunder and lightning are common. Therefore, ordinary planes can only fly when the weather is good, and in case of bad weather, they will be banned from flying.

Above the stratosphere, is the ionosphere. The temperature in this layer is very high, with an average temperature of more than 400 degrees Celsius. Up to 1,000 degrees. The air here is all ionized.

It is simply impossible for an ordinary plane to fly to this height, only special space shuttles and spacecraft, as well as space probes, can fly through this space.

Above the ionosphere, there is the fugitive layer.

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

Knowing the composition and composition of the air, we will know that the most suitable altitude for aircraft to fly is more than 10 kilometers. This is the stratosphere, and the atmosphere is very stable.

However, the air here is thin and the temperature is very low, generally around -56 degrees Celsius. An ordinary engine simply will not work here. It is only possible to work here with advanced gas-burning 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. Engines are their hearts. Without an engine, any means of transport is a pile of scrap metal.

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

In order for an airplane to fly quickly and steadily in the air, it is necessary to design a shape that reduces air viscosity. For example, we designed the shape of the wings of the airplane to be the shape of a bird's wings, which is based on the principle that birds can reduce air viscosity when flying.

But in any case, it is impossible for an airplane to fly off the ground without an engine. When flying in the air, it is also necessary for the engine to be working normally, if the engine fails, the plane will just fall from the sky like a pile of scrap metal.

Therefore, when we study aircraft, we mainly need to study engines. Only when the engine is improved can the aircraft be truly improved. If you don't improve the engine, but just improve the appearance, it won't do much at all.

Consider overcoming air viscosity, as an example, improving the shape to help reduce air resistance. But this is not the fundamental solution, if you can improve the power and performance of the engine, and increase the propulsion of the engine, then what is the viscosity of the air?

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

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

Chen Yuan and Cheng Fei listened, and the two of them were a little dumbfounded, originally, they thought that Zhao Zhongyao understood aerodynamics at all.

Unexpectedly, even these two experts have not heard these explanations. Like spaceships, space shuttles, these new terms, they have never heard of before. I don't understand at all, how did Zhao Zhongyao know.

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

From the bottom of his heart, Chen Yuan had some respect for the young man in front of him.

"Yes, Mr. Zhao, now I finally understand, the ancients said!'Listening to your words is better than reading a book for ten years'!" Cheng Fei also admired Zhao Zhongyao very much, and felt that Zhao Zhongyao really deserved his reputation!

"Mr. Zhao, since you know so much about the power of the plane, then I have a mention, I don't know if Mr. Zhao is willing to listen!" Chen Yuan looked at Zhao Zhongyao, and a strange smile appeared on the corner of his mouth.