What are the holes in the glass windows of an airplane used for?

This small hole is called a vent and its main function is to protect the safety of passengers. The vents are generally designed at the bottom of the window.

When the pressure inside the aircraft is too high, the internal air pressure can be discharged to the outside of the window through the air vent to ensure that the window will not crack due to the air pressure. With the protection of the air vents, the air pressure inside the passengers and the aircraft will be relatively stable, and the safety of the entire cabin can also be ensured when the aircraft enters the high-altitude flight. Therefore, the air vents on the aircraft have a very important role in the aircraft.

Personally, I think the design of the vent is a very good invention. Because the air vents can help improve the safety of passengers, and can also help the aircraft adjust when the air pressure is too high, ensuring the safety of the whole flight. In the early development of the world's aviation industry, due to the instability of air pressure, many air accidents occurred, so in order to reduce the occurrence of air accidents, people made a lot of changes to the aircraft, that is, in the process of continuous change and improvement, the appearance of air vents improved the survival rate of aircraft.

The following is a brief introduction to the measures to avoid danger when flying on an airplane.

First: Fasten your seatbelts.

If you are flying by yourself, you must fasten your seat belt in case of danger to prevent yourself from being injured due to turbulence during the flight. Many passengers just don't wear seat belts, resulting in many dangerous situations in air crashes again and again.

Second: prepare your parachute.

In fact, preparing a parachute is also a means of avoiding danger, which often happens to fighter pilots, because preparing a parachute can save themselves by ejecting the seat. Such a situation is not common on private airliners, but it is also a means of hedging, and in some special cases, it can save one's own life.

Third: Obey the command.

Once the plane encounters an emergency, it is important not to have panicked thoughts and emotions. Because this will make you useless, and even increase your chances of danger. Be sure to follow the arrangements of the maintenance staff, so as to ensure your chances of survival.

Fourth: Call for emergency help**.

I think the most important thing is to call emergency help**. Because after a dangerous accident, dialing emergency rescue** can send a distress signal to the outside world, and when the outside world receives a distress signal, it will make the first response. In a short period of time, you can get help and buy a little life for your life.

To sum up, it is very convenient to fly now, but it is also necessary to ensure safety while flying by yourself. Because only safety is the premise of everything, many people still have careless thinking, which is unacceptable. Safety is the most important thing in everything you do.

The glass holes on the aircraft windows are actually small air holes, and there are two main uses:One is to balance the air pressure, and the other is to prevent the glass from fogging.

Frequent flyers will probably notice this small blowhole, which is usually located at the lower edge of the glass window, in an inconspicuous position. This principle is actually quite simple, everyone can figure it out with a little physics-related knowledge, and this small pora is still very necessary.

1. Balance air pressure

When the aircraft is raised to flight altitude, this small hole can reduce the air pressure difference between the inside and outside of the cabin to a certain extent.

During the flight of the aircraft, as the altitude continues to rise, the air pressure in the external environment will become higher and higher. In order to protect the lives of passengers, the cabin of the aircraft must be pressurized.

When the aircraft is at an altitude of 10,000 meters, the outside air pressure is only a standard air pressure. In order to achieve a standard air pressure that is suitable for the human body at such an altitude, it is necessary to subjecte the body to a higher pressure. However, if the internal and external materials of the aircraft are simply used to withstand such air pressure differences, then the manufacturing cost of the aircraft will be greatly increased.

Experimental studies have found that the air pressure does not have a significant effect on the body after reaching a standard air pressure, and the aircraft has a very complex pressure control system inside, and the exhaust hole at the lower edge of the aircraft window is part of the pressure relief system.

2. Prevent the window glass from atomizing

Not only is the air pressure difference between the inside and outside of the cabin very large, but the temperature difference is also very large. When the plane reaches an altitude of 5,000 meters, the surrounding atmospheric temperature drops to about minus 15 degrees, and when the plane reaches an altitude of 10,000 meters, the atmospheric temperature is around minus 40 degrees.

The temperature difference between the inside and outside of the cabin is enough to make the window panes completely frost and nothing can be seen.

When the temperature difference between indoor and outdoor is large in winter, it is very easy for indoor glass to form ice window flowers, which is the same principle as aircraft atomization. It is easy to solve this problem by opening a small hole under the aircraft window glass to allow the internal and external airflow to communicate, and the air communicating with each other can effectively avoid the atomization of water vapor due to excessive temperature difference.

Of course, the reasons for this are ancillary reasons, but the most important point is the first point, which is to balance the internal and external air pressure.

In fact, the aircraft glass window is a three-layer mechanism, and the small hole we see is at the lower edge of the middle glass. The innermost layer of glass is not sealed, while the outermost layer of glass is tightly sealed. The main purpose of the small holes in the glass window is to maintain the pressure difference between the outer glass and the inner layer, and if necessary, the pressure can be relieved slowly.

At the same time, it also serves the purpose of avoiding fogging up the entire window, so that passengers can enjoy the beautiful view outside the window at any time.

This is decompression, this is decompression, if this inside and outside suddenly pressure is suddenly high, this glass will break.

One is to balance the air pressure.

When the aircraft is raised to flight altitude.

This small hole is able to reduce a certain air pressure difference between the inside and outside of the cabin;

The second is to prevent the window glass from atomizing.

Under normal circumstances, I think that this small hole in the glass window of an airplane will be used to vent air.

The small holes in the windows of airplanes serve two main purposes. The first is to balance the air pressure. When the aircraft is raised to flight altitude, this small hole reduces the air pressure difference between the inside and outside of the cabin.

The second is to prevent the window panes from fogging. The small hole can avoid fogging up the glass of the aircraft window due to various reasons such as air pressure in the air.

An airplane is a heavier-than-air aircraft that has a power plant with one or more engines that generates forward thrust or pull, and lift is generated by the fixed wings of the fuselage, and flies in the atmosphere.

The airplane is one of the most significant inventions of the early 20th century, recognized as invented by the American Wright brothers. The advent of airplanes changed and affected people's lives, and started the history of people's conquest of the blue sky.

Aircraft can be divided into two categories: military aircraft and civil aircraft according to their use. Civil aircraft generally refers to all aircraft for non-military purposes, such as passenger aircraft, cargo aircraft, agricultural aircraft, sports aircraft, ambulance aircraft, experimental research aircraft, etc. Content.

The small round hole in the airplane window is officially called "breathing hole", and its role in the airplane can balance the pressure of the inner and outer layers of the window, in order to prevent the window from cracking due to drastic changes in temperature and air pressure. The small round hole balances the air pressure in the middle and outer glass and the cabin, preventing the inner glass from bursting and ensuring that the pressure in the cabin is only applied to the outer glass during the voyage.

Another function can prevent condensation of water vapor in the window, and prevent moisture and fogging; Airplanes fly at altitudes above 30,000 feet, and the temperature outside the cabin is often below -50. Without the holes, the moisture exhaled by passengers in the airport will frost on the windows of the belt (like the windows of a car in winter). The internal and external pressure can be adjusted through the breathing hole, which can avoid the generation of water vapor and ensure that the scenery can be clearly presented.

What do small holes in airplane windows do?

The small hole in the aircraft glass is to balance the air pressure, when the aircraft rises to the flight altitude, this small hole can reduce a certain air pressure difference between the inside and outside of the cabin, and the second is to prevent the window glass from fogging.

Description: The small holes in the windows of the aircraft are used to regulate the air pressure. Windows are mainly composed of outer, middle and inner glazing, with small holes called exhaust holes, which can balance the air pressure in the middle glazing, outer glazing and the cabin.

In addition, the small hole also plays an important role in anti-fog and frost, so that passengers in the cabin can enjoy a clear and beautiful scene during the flight.

The function of the vent in the middle window glass is obvious: it is a drain valve that equalizes the air pressure between the cabin and the middle and outer windows. This small hole ensures that the pressure in the cabin is only applied to the outer glazing during the voyage, so the middle window is kept just in case.

One is to balance the air pressure, when the aircraft rises to the flight altitude, this small hole can reduce a certain air pressure difference between the inside and outside of the cabin, and the other is to prevent the window pane from fogging.

Introduction: An aircraft refers to an aircraft with wings, one or more engines that is driven forward by its own power, and can be denser than air in space or the atmosphere. If the density of the aircraft is less than air, then it is a balloon or an airship.

If there is no power unit and can only glide in the air, it is called a glider. If the wing of the aircraft is not fixed, it is a rotorcraft that generates lift by wing rotation.

Features:1It is denser than air, and it is driven forward by power;

2.Airplanes have fixed wings that provide lift to make the plane soar through the sky.

What are small holes in airplane glass used for? The staff explained in person, and the truth was surprising!

Hello, I am an aircraft maintenance pilot, which is commonly known as the aircraft cabin, and there is a small hole about 3mm in diameter in the lower part of the window. Because the cabin glass you see is actually made up of three layers. And that small hole is only found in the middle glazing, which is actually very easy to understand, and the purpose is to evenly press.