Why do airplanes have to fly at an altitude of 10,000 meters when flying? What s the point?

Since the birth of mankind, a very mature civilization has been formed, and all this is constantly evolving. Despite the arduous development process, humanity persevered and eventually became the master of the earth. As the most special advanced life form on the earth, any problem can be solved one by one through the wisdom of the brain.

Since the level of science and technology has been improved, human beings enjoy more and more convenience, all walks of life have made leapfrog progress, people's lives are more and more convenient, the reason why it has become like this, stems from the continuous emergence of high-tech products, the emergence of these products, so that human life has become more convenient, and even the efficiency of work has been greatly improved. With the advent of the Internet, people really feel the convenience of technology, and not only that, but the appearance of cars, airplanes and other means of transportation can be quickly reached no matter how far away. Why do airplanes have to fly at an altitude of 10,000 meters when flying?

It's all a painful lesson!

Speaking of airplanes, it is the greatest invention in human history, and it also plays a huge role in human life, it was first invented by the Wright brothers, who relied on their own power machinery and control principles to develop the Flyer 1, when human beings dreamed of going to space, but unfortunately the technology was limited. Since entering the modern society, airplanes have become the most common means of transportation, perfect for human beings to realize this dream. It has to be said that the aircraft developed by the Wright brothers laid a good foundation for today's astronautics.

Today's aircraft are not only high-end and atmospheric, but also fly much faster than previous aircraft. I don't know if you have noticed that most planes can fly stably at an altitude of more than 10,000 meters, why is this? After understanding, I know that all this is for safety, if the plane flies too low, all kinds of birds flying in the sky collide with the aircraft, which may cause the problem of aircraft destruction and death at any time, and then regret it is beyond reach, unfavorable and navigational, extremely dangerous, and easily affected by the wind on the road, only to fly to a height of more than 10,000 meters, to ensure safety.

In addition, there is a stratosphere at an altitude of 10,000 meters, which is extremely stable and can also increase the stability of aircraft flight. After all, there are fewer impurities and suspended particles inside, which is easy for pilots to maneuver, and the force is also low, and birds often do not have the ability to fly to such a high altitude, so the aircraft is safer in the stratosphere.

This depends on the distance of the aircraft, if it is a long route, it will generally fly to an altitude of more than 10,000 meters into the stratosphere, where it is relatively stable, the plane is less hindered by flying there, and for the aircraft, there is a fixed route, can not be changed at will.

The main reason why the plane flies at an altitude of 10,000 meters is to avoid clouds and lightning strikes. In order to ensure the safe flight of the aircraft.

Because there are no birds and creatures at an altitude of 10,000 meters, it is relatively safe, and an altitude of 10,000 meters belongs to the stratosphere, and the air pressure is relatively stable, which can also speed up the flight speed of the aircraft.

Why does an airplane have to fly to an altitude of more than 10,000 meters? Actually, the reason is very simple.

The plane wants to fly more than 10,000 meters, the most important reason is the engine and atmospheric pressure, in the altitude of more than 10,000 meters, the air will become very thin, the flight resistance of the aircraft becomes smaller and larger, and the external atmospheric pressure will also decrease, the body inside in order to maintain the necessary living space of the human body will be pressurized, so that there is a pressure difference between the inside and outside of the body, and the aircraft can fly smoothly.

Moreover, when flying at high altitude, the plane is in the stratosphere, the airflow is relatively gentle, there is no strong convective weather and storm effect, and its visibility is very high, the air noise is small, and a large part of the aircraft accident is due to the collision with the flying birds in the sky.

Most of this occurs when flying at low altitudes, and at altitudes above 10,000 meters, there are few birds, which increases the safety of flight, so the altitude above 10,000 meters is the most suitable altitude for aircraft flight, and it is also the safest flight altitude.

There are several reasons why airplanes have to fly that high. First of all, it is not safe to fly a little low, because the environment is unstable; secondly, the plane flies a little higher to avoid the flight effects brought by the birds; In addition, it is more fuel-efficient and labor-saving for the aircraft to fly a little higher; Finally, because if there is a breakdown in flying a little higher, the pilot has enough time to do so.

Under normal circumstances, the plane flies at an altitude of about 8,000 to 12,000 meters, which is between the troposphere and stratosphere, and if it is lower, the plane will be in the troposphere. The reason why the plane flies a little higher is actually exquisite.

First of all, it is not safe to fly a little low, because the environment is unstable; If the plane is a little lower, it is in the troposphere, and the troposphere is the atmosphere closest to the ground, where 90% of the atmospheric water vapor mass is concentrated, and it is particularly vulnerable to various terrain such as forests, oceans, mountains, etc., and is prone to hurricanes. We know that airplanes are dangerous in hurricanes, and even if they can withstand the impact, they will be in a state of turbulence, which will not only panic passengers, but also cause all kinds of physical discomfort for passengers.

If you encounter a thunderstorm, you may also be struck by lightning in this troposphere, and the consequences are unimaginable. Therefore, the plane has to fly above the troposphere.

Secondly, the plane flies a little higher to avoid the birds. Although the birds are small, the planes are large, and it seems that they will not pose any threat or impact to the aircraft. In fact, when the aircraft is flying at high speed, if it hits a bird, it will produce an impact force that will damage the aircraft.

If a bird is accidentally sucked into an aero engine, it may even cause engine damage, the engine is equivalent to the wings of an airplane, and if the engine fails, the consequences are terrible, and the worst consequence is to cause a plane crash.

In addition, airplanes tend to be more fuel-efficient when flying a little higher. The higher the altitude of the aircraft, the thinner the air, so the less resistance brought by the air, coupled with the stability of this high airflow, so the aircraft flies easily, and compared with low-altitude flight, flying is more labor-saving and fuel-efficient.

In addition to this, if the aircraft fails, a high enough altitude can give the pilot time to save himself. If the plane is flying at an altitude of only 2 kilometers, it may have fallen in a matter of seconds. If the flight altitude exceeds 10,000 meters, it will take a while for the plane to fall, and it will be able to save itself within this time.

Therefore, this is also the reason why the plane flies a little higher.

The above points are the importance of the aircraft in terms of flight altitude.

If the plane is low. The momentum generated is too small. will cause the plane to fall. Flying high allows the airflow to support the plane. It won't fall, making the plane smoother.

Because if the aircraft is low, it will not be in the stratosphere, which will bring great safety risks to the flight. It is relatively stable in the stratosphere and is not prone to emergencies, which ensures the safety of passengers to a certain extent.

Mainly because the air at high altitude is thin and the drag is relatively small, flying at this altitude the aircraft can fly faster.

First of all, it has to do with the vertical stratification of the atmosphere. The atmosphere of 2000-3000 km thick can be roughly divided into troposphere, stratosphere and upper atmosphere from bottom to top.

The atmosphere is vertically stratified.

The tropospheric air moves significantly to the vibratosphere flow, which is not suitable for aircraft to fly for a long time (there will be strong turbulence) The troposphere thickness decreases from the equator to the poles, and the thickness is about 12 km in the middle latitudes. In order to avoid the strong convective movement of the air, the aircraft had to fly at an altitude of more than 10,000 meters, because this altitude was already the tropopause or stratosphere bottom, and the air convective movement was no longer obvious.

It has to do with the density of the atmosphere. The density of the atmosphere near the ground is high and the air resistance is high. As the altitude increases, the density of the atmosphere decreases rapidly, at an altitude of 2000-3000 km, close to a vacuum.

The aircraft flies at an altitude of more than 10,000 meters, with low atmospheric density and low drag, which can save fuel.

It has to do with atmospheric visibility. Clouds, rain, smoke and dust in the atmosphere are mainly distributed in the troposphere. These can affect the visibility of the atmosphere. At an altitude of more than 10,000 meters, there are almost no clouds, rain, haze, sand and dust, and the atmospheric visibility is excellent.

It has to do with geospatial security. There are more birds flying at low altitudes, which will seriously affect the flight safety of the aircraft. Moreover, our production and life are basically carried out in the bottom troposphere, such as military exercises, balloon flying, kite flying, etc., which may also bring hidden dangers to aircraft flight.

Associated with noise pollution. Aircraft are noisy in flight, and flying at high altitudes can minimize noise pollution.

Altitude sickness is mainly a climatic problem, such as changes in air pressure outside the body, changes in temperature.

First of all, there is air conditioning in the cabin to regulate the temperature.

The temperature in the cabin is relatively constant.

The atmospheric pressure in the second cabin remains the same as the atmospheric pressure on the ground.

10,000 meters belongs to the bottom of the stratosphere, where the flight is smooth, the air flow is less, and the fuel consumption is also small, so the cruise of passenger planes basically wants to fly high.

He had a parachute, and Xiao Ming didn't die when he fell off the plane.

There are birds in the lower layers, the air flow is unstable, there are cumulonimbus clouds, there will be flying objects such as ***, the speed will be slow in theory, but it can be ignored, so it is at an altitude of 10,000 meters.

Aircraft wakes can be formed at the top of the troposphere and at the lowest ground, and can be formed by fighters and civil aircraft. Whether the wake can be formed is mainly related to the atmospheric temperature and humidity, the temperature is usually lower than -40 degrees, the greater the humidity, the more conducive to the formation of the wake. In this way, the height of the wake may be different in different seasons and different regions in different weather, and it is difficult to judge the approximate height of the wake if there is no meteorological data.

Older planes were kept warm by flight suits, and some had electrically heated flight suits.

Modern aircraft have air-conditioning systems that control the cabin temperature, and the engines bring in airflow to heat them.

Swans can fly tens of thousands of meters into the air, but they don't always fly that high.

Large migratory birds can fly very high during migratory flights, mainly to avoid the entanglement of natural predators, only migratory birds have the ability to fly for a long time, allowing them to gradually climb to extremely high altitudes. Small birds usually do not fly very high due to physical limitations; Migratory birds that stay in the local area do not need to fly so high.

Wild geese, cranes, and swans fly in groups, which can save physical strength in a certain formation, which is also an advantage for them to fly relatively high.

When at an altitude of 10,000 meters, the air density outside the tire is low, the air pressure is small, and the internal pressure is stronger than the external pressure. However, most aircraft tires use tubeless, double-tread tire structure, which has no inner tube, so it will not **.

Two layers of special cords are added to the inside of the aircraft tire tread rubber, commonly known as "reinforcing cord layer". With the ply layer as the boundary, the tread rubber is divided into the outer layer of tread rubber and the inner layer of tread rubber, and when the tire is worn to expose the second layer of particle, it will be scrapped. The rubber surface of the aircraft tire is made of abrasion-resistant and high-temperature resistant special material glued steel wire, about 20 mm thick, with high strength, and the tire valve is both pointed and short, made of high-temperature fluoroplastic, with smooth air intake and strict leakage.

Aircraft tires do not have inner tubes, mainly because they are convenient for disassembly and maintenance, and they can be directly inflated into the tires when flying. At the same time, airlines around the world use high-strength magnesium-zinc alloy to make the wheel hub and movable wheel rim, and use the sealing ring to seal the joint part of the wheel hub and the movable wheel rim, between the valve and the wheel hub, which can ensure that the gas in the tire up to several atmospheric pressure values does not leak, and its performance is incomparable to that of ordinary tires, and it is quite expensive.

Because if the plane is higher in a higher place, it will be subjected to stronger pressure, so the aircraft needs more power to support the flight, but the volume of the aircraft itself is very large, so it is very easy to break down at high altitude with too high air pressure.

The stratosphere of the earth is located 10,000 meters away from the earth's surface, and the fluctuation of the aircraft flying in the stratosphere is relatively small, but if the plane flies too low, the fluctuation of the air flow at low altitude is very unstable, which will cause the two sides of the aircraft to be subjected to different lift.

And there are many birds that like to fly at an altitude of several thousand meters, so if the flight altitude of the plane is low, it is not only easy to collide with the birds, but also makes the pilot in a very nervous state all the time, which is very unsafe.