Bright Sword starts with the grenade flat.

Chapter 140 Fifth Version

Liu Xiu felt pity for this result. After all, it meant that the potential of this wooden fuselage was limited.

Next, if you want to increase the speed, you can only use a metal fuselage. Not to mention the problem that the metal fuselage will increase the weight, the processing of the metal fuselage is also a problem.

After all, there are only a few machine tools available in the arsenal. If they are all used to process metal bodies, then why not produce firearms?

Of course, this is actually enough for the current situation!

Compared to increasing the speed of the aircraft, it is actually more important to equip the aircraft pilot with compressed air and thermal clothing.

Otherwise, being able to fly at low altitudes will always be a huge hidden danger. It may not be a problem to deal with the Japanese planes now, but it will not be able to deal with the American planes in the future.

You must know that all the aircraft of the US Army are equipped with superchargers and can easily fly to an altitude of tens of thousands of meters.

Therefore, if you are unable to fly to a certain height, you will be thrown away by the opponent's enemy aircraft by climbing, and then use the height advantage to conduct high-altitude dive attacks.

After all, the advantage of being at a high altitude is really important to a fighter plane.

Thinking of this, Liu Xiu said to his father Liu Qin:

"This is normal. The higher the plane flies, the thinner the air becomes. The thinner air naturally contains less oxygen, so the cockpit must be sealed and pressurized, and a closed cockpit must be used. Okay! Otherwise, the cold at high altitude will also be a problem!"

Liu Qin responded to Liu Xiu’s question:

The main pipe of the supercharger's air inlet in the picture was opened by Liu Qin, and a pipe was connected from the opening.

"Dad, I think the altitude advantage of this fighter plane is really important, but when this fighter plane flies too high, I feel short of breath and feel out of breath! Dad, what do you think is the reason for this?"

As Liu Qin spoke, he took out his notebook and started writing and drawing. After a while, he drew a simple improvement diagram of a turbocharger.

Then Liu Qin pointed to the pipe and explained to Liu Xiu:

"Originally, this aircraft could not fly high before it was equipped with a turbocharger. However, after installing a turbocharger, the aircraft can fly at an altitude of more than 5,000 meters or even 10,000 meters. However, humans cannot adapt to 5,000 meters. The altitude is above, so you can install a small tube in the air inlet of the supercharger to introduce the turbocharged air into the cockpit of the aircraft. This solves the problem of the driver's difficulty breathing! "

Liu Xiu also pretended to listen carefully to Liu Qin's explanation. After Liu Qin finished speaking, Liu Xiu said with a smile:

"Dad, I really want to see what the scenery is like at an altitude of 10,000 meters! Dad, do you think there are legendary immortals at an altitude of more than 10,000 meters?" However, Liu Qin shook his head and said:

"I don't believe in gods. If there were gods, how could they allow us to be bullied by little devils like this? I think compared to illusory gods, we must have a correct understanding of the world in order to face it reasonably... ····”

What Liu Xiu didn't expect was that just because of Liu Xiu's joke-like words, Liu Qin started to popularize science for him.

First, Liu Qin told Liu Xiu that the main reason why airplanes can fly is the atmosphere, and the atmosphere is divided into three layers.

The first layer is the troposphere. The troposphere is the layer at the bottom of the atmosphere. It is the densest layer in the Blue Star atmosphere. It concentrates about 75% of the air mass in the atmosphere and almost all the water vapor and solid impurities. The temperature of the tropospheric atmosphere is hot near the ground. The higher the air temperature, the lower it gets. The temperature drops by about six degrees for every kilometer of rise, because the ground is the direct source of heat for the tropospheric atmosphere.

Since the troposphere concentrates almost all the water vapor and solid matter in the atmosphere, most of the weather phenomena we see occur in the troposphere, such as precipitation, snowfall, hail, heavy fog, typhoons, etc. In addition to different thicknesses at different latitudes, the thickness of the troposphere also changes seasonally at the same location. Generally speaking, when the temperature is higher in summer, the troposphere is thicker; while in winter when the temperature is lower, the troposphere is thinner. Because the temperature in the troposphere is cold at the top and hot at the bottom, the air movement and convection are violent.

The second layer is the stratosphere. The stratosphere is located above the troposphere, ranging from the top of the troposphere to an altitude of 50 to 55 kilometers. The air temperature in the stratosphere increases as the altitude increases, causing the upper atmosphere of the stratosphere to heat up. When it is cold below, the convective movement of the air is weak, so the movement of this layer of atmosphere is dominated by advection. In addition, because the stratosphere rarely contains water vapor and solid impurities, the weather is sunny with few clouds and rain, which is suitable for aviation. Most of the ozone in the atmosphere is concentrated in the stratosphere. At an altitude of to kilometers, the ozone concentration reaches its highest level, which is called the ozone layer. Ozone can strongly absorb ultraviolet rays from solar radiation and protect life on blue stars.

But when Liu Qin introduced the third layer of the atmosphere to Liu Xiu, he sighed:

"Due to existing technical reasons, observatories made of hydrogen balloons have not been able to fly higher so far, so we still cannot know the edge of the third layer of the atmosphere. I hope there will be a way to detect the edge of the atmosphere in the future!"

Although Liu Xiu knew that with the rapid development of rocket technology in the late World War II, the first man-made satellite would be launched in 14 years, that is, in 1957, but Liu Xiu could not say now. What, so he opened his mouth and said to Liu Qin:

"Dad, aren't you working on that explosive engine of yours? Maybe when your explosive engine is developed, we can use your engine to make an engine that can fly higher, fly further, and even fly to the moon. The plane is gone!”

When Liu Qing heard Liu Xiu's innocent tone, she couldn't help but shook her head and smiled bitterly:

"It's not as easy to invent as you think! But if you lend me your good words, I hope you can develop this kind of engine in my lifetime! Okay, if I don't tell you now, I have to think about this drawing. Think about it and try to build a plane that can fly over 10,000 meters high!"

Just when Liu Qin was renovating the cockpit and engine of the aircraft, Liu Xiu received a piece of bad news, that is, the little devil was actually working on the Taiyuan Airport again, and seemed to be planning to reopen the Taiyuan Airport.

Liu Xiu naturally had nothing to say about the little devil's situation. He really couldn't afford to fly a rotorcraft to steal the camp again or blow up the airport again!

However, on the third day, Liu Qin asked Liu Xiu to try the fifth version of his improved aircraft.

That's right, the first version of the aircraft is naturally the one made using a three-wheeled motorcycle engine, while the second version is an aircraft made using a two-stroke engine.

As for the third version, it created an aircraft with a mortise and tenon fuselage structure, and the fourth version changed the two-stroke engine into a turbocharged two-stroke engine. As for the one in front of me, it is the fifth version.

(End of this chapter)