Why do fighter planes have to wear face shields?

The chronic damage of sunlight to the body is frightening, but the acute damage is also very disturbing.

When flying, the speed is too fast, and it is easy to breathe, so it is necessary to wear a mask.

Because oxygen in the air is relatively thin, I am afraid of special situations.

Oxygen in the air is relatively thin and too fast, making it difficult to breathe.

Fighter aircraft crews are definitely needed.

Flying is when the speed is too fast and it is easy to breathe.

If the speed is too fast, it will be easy to breathe.

This is the thinning of oxygen in the air at high altitude.

Friends who often watch Air Force movies will see such a picture, that is, when fighter pilots fly fighters at high altitudes, they always wear a mask, and this mask is to provide oxygen for the pilot, but this makes many people not understand,

To be precise, it should be called an oxygen mask, which will be used when flying high, and the pilot will wear an oxygen mask if he needs to inhale oxygen according to his personal physical condition, and in general, in order to avoid the pilot wearing an oxygen mask in the air to affect flight safety, he will wear an oxygen mask on the ground, and there is also a special high-altitude fully enclosed helmet.

All you see is the face mask of the Air Force pilot, in fact it is not just the mask, but the flight suit is a complete set of clothing. Then the question becomes why do pilots wear flight suits?

As a simple analogy, why do you wear a helmet when riding a motorcycle? The speed of the motorcycle is 60 kilometers per hour, and in that case, you can't stand the wind without a helmet.

Do you know that the American F35 fighter jet has been grounded indefinitely due to lack of oxygen? Where does this lack of oxygen come from? It's the helmet that everyone sees.

This helmet is not a simple windproof and anti-collision function for motorcycle drivers, but an intelligent system that plays a variety of functions such as oxygen supply, assisted driving, and intelligent display.

Flying a modern fighter at high altitude is definitely not as fun as drag racing, but a physical and psychological extreme challenge, without the assistance of external equipment, it is impossible for normal people to withstand the impact of high lack of oxygen, cold and more than 2 times the speed of sound.

A set of spacesuit costs 30 million yuan, why is it so expensive, it is because the spacesuit is not as simple as a mask, but has various functions such as helping the human body adjust to external pressure, maintain temperature, and supply oxygen. It is no exaggeration to say that the spacesuit is a collection of various high-tech.

Although the pilot's flight suit is not as complex as the spacesuit, the performance of modern fighters is getting better and better, and the requirements of the flight suit are becoming more and more stringent. Without the mask that everyone is questioning, it would be absolutely impossible for a pilot to fly a modern fighter. In fact, even the oldest gliders of the First World War era, pilots had responsive guards, but they were not as sophisticated as modern ones.

Therefore, the problem itself is not a problem, and it can be understood as what the pilot mask does.

The masks worn by modern fighter pilots are designed to provide oxygen to the pilot, because oxygen is thin at high altitudes and requires a mask to supply oxygen.

This mask is to provide oxygen to the driver, because the air pressure will be lower in the air, the oxygen content in the atmosphere will also be reduced, people will have difficulty breathing, with this mask the driver can breathe smoothly.

Face shields can help protect them from wind and sand, keep them in good visibility, make sharp judgments, and also have a protective effect on their heads.

Friends who often watch Air Force movies will see such a picture, that is, when fighter pilots fly fighters at high altitudes, they always wear a mask, and this mask is to provide oxygen for the pilot, but this makes many people not understand,

Generally speaking, only fighter jets need to wear masks, which are oxygen masks, because pilots will overload when they control the fighter to do high maneuvering actions, and overload will cause the pilot's brain to be ischemia, resulting in a decrease in oxygen content, pilots fainting and other adverse reactions, so pilots need to prepare oxygen masks.

The maneuvering overload of the aircraft refers to the maximum acceleration that the body structure of the aircraft can withstand when flying at high speed, especially when doing various high-speed and violent maneuvers, and its unit is generally expressed by gravitational acceleration g.

Modern fighters can generally withstand an overload of up to 9 g, but the pilot cannot, the overload that the pilot can bear has a physiological upper limit, if there is no equipment to assist, do not use special action skills to fight; Their base load resistance to positive overload is less than half that of 9g, and the average lasts about 10 seconds). When the overload reaches 9g, the pilot has to bear 9 times the weight of himself (including clothing, helmets and other items). During this process, the blood in the pilot's body will move to the abdomen, legs and feet under gravity, and once the eyes and brain do not have enough blood, then the lack of oxygen will soon cause vision loss, and then loss of consciousness.

As a result, the ability to control the aircraft is lost, which can lead to serious consequences. In the last two decades of the last century, 12 F-16 fighter planes of the US Air Force crashed, and nine pilots were killed, all of which were caused by the rapid rise of the overload and the temporary loss of vision of the pilots.

Only after a series of technical measures such as anti-overload cockpit, new anti-load suit, compensatory vest, anti-load pressurized breathing, and new anti-load action are put into use, can pilots withstand long-term high-overload flight. As you mentioned in your question, the mask is one of the measures, and its principle is to force a large flow of oxygen into the lungs through the breathing mask, so that the pilot's blood oxygen content is greatly increased, which can provide even higher anti-overload effect.

That's why fighter pilots need to wear face masks.

When fighter pilots conduct high-altitude operations, they need to fly at high altitudes and low pressure. Because under the conditions of high altitude and low pressure, the oxygen content will gradually decrease, which will cause harm to the human body. Therefore, in order to ensure the health and safety of pilots when fighting at high altitudes, they need to wear oxygen masks and continuously inhale oxygen during the flight.

Fighter pilots wear oxygen masks with a small bottled oxygen** device inside to provide a steady flow of oxygen. Through the use of oxygen masks, the pilot's body's normal oxygen needs can be maintained. Moreover, because fighter jets move very fast in the air and have difficulty breathing, fighter pilots need to be equipped with nasal clips on their masks to inhale oxygen more effectively.

In addition, pilots may need to move quickly in the event of an emergency and do not have time to take off the mask. Keeping the mask on ensures that adequate oxygen is maintained in the event of an accident** to protect the pilot's life. Therefore, fighter pilot Wu Chang needs to wear an oxygen mask throughout the flight.

The mask that the fighter pilot wears is an oxygen mask, which provides a way to transfer the oxygen needed for breathing from the tank to the lungs.

Modern fighters have automatic pressurized seats, so that the internal and external pressure of the fighter is the same when flying at high altitudes, and at the same time, when the aircraft flies above 6,000 meters, because the outside air begins to thin out, the pilot must wear an oxygen mask. Breathe oxygen. These oxygen are oxygen cylinders stored in the body, and before the aircraft takes off, the ground crew will not only refuel the aircraft and hang the bombs, but also inject mixed oxygen into the oxygen cylinders.

The seat compartment is sealed, otherwise when flying at high altitude and high speed, a slight change in the seat compartment pressure will endanger the pilot, and at the same time, the fighter aircraft is flying at high speed (especially in combat), the pressure and G force under the pilot are huge, at this time, in addition to the pressure flight suit automatic pressurization to protect the pilot, the oxygen pump will also automatically pressurize and increase oxygen**, because at this time the pilot's lungs are compressed, breathing will be more difficult, this automatic system can ensure that the pilot will not be hypoxic coma. Because the cabin automatically adjusts the pressure according to the flight altitude, the pilot can choose to turn on the air exchanger to let the outside air into the cabin when the fighter jet flies to a low altitude, or continue to use the oxygen mask.

Modern fighters have auto-pressurized slots. When making a fighter fly at high altitude. The pressure inside and outside the compartment is the same.

At the same time, when the aircraft flies above 6,000 meters, the air outside begins to thin out. Pilots are required to wear oxygen masks. Breathe oxygen.

The sin is sealed, otherwise. When flying at high altitudes and high speeds, there is a slight change in seat pressure. will endanger the pilot.

At the same time, when the fighter is flying at high speed (especially during combat), the pressure and g-force of the pilot are very huge, at this time, in addition to the automatic pressurization of the pressure flight suit to protect the pilot, the oxygen supply pump will also automatically pressurize and increase oxygen**. Because the pilot's lungs are compressed at this time, it will be more difficult to breathe. This automatic system ensures that the pilot does not fall unconscious due to lack of oxygen.

Since the seat compartment automatically adjusts the pressure according to the flight altitude. So when the fighter flies to a low altitude. Pilots can then choose to turn on the air exchanger to allow outside air into the cabin, or continue to use the oxygen mask.

Therefore, pilots of modern supersonic fighters, oxygen masks and pressure flight suits are indispensable.

When a fighter plane takes off, the pilots first use oxygen masks. Ventilator outside air will not be selected. Because when the fighter plane waits on the runway for takeoff, it will spew out a large amount of toxic exhaust gas.

In order to prevent the exhaust fumes from entering the cabin and causing poisoning, the pilots will turn on the air exchange device and use oxygen masks to breathe.

It is an oxygen mask to protect the life safety of pilots in high-level space with thin oxygen.

Protective. It is composed of various sponges, leather, support strips and other components, and the protection is proper, but it is a bit heavy, and the cervical spine can't stand it if you wear it for a long time.

2.Light-proof eyepieces. This performance is not easy to say, at least it is not worse than ordinary sunglasses, which can cover half of the face. When the eyepiece is retracted, it needs to be manually lifted up, and when it is put down, there is a toggle switch on the side of the helmet, and it will be automatically lowered when it is flicked.

3.Communication features. Inside the helmet are communication devices in the ear area, somewhat similar to a walkie-talkie.

4.Oxygen mask. This should be understood, a bit like a gas mask, the other end is connected to the oxygen interface of the aircraft to supply oxygen, the smell of oxygen supply is not as fresh as in the hospital, there is a strange smell, similar to the mixed smell of rubber and engine oil.

Why do fighter pilots have to wear helmets, but commercial airliners don't?

The helmet is a high-tech technology that can greatly reduce the work pressure of pilots, so that pilots can fight with peace of mind! Inside the helmet are sights, communication equipment, and a display of aircraft flight data. In addition, in the event of an accident with the aircraft, the helmet can also protect the pilot when parachuting!

It can provide oxygen, measure the pilot's physical indicators, protect the pilot's head when ejecting through the cover, shade the sun, eliminate engine noise, communicate with the wingman or the tower, and know the situation of the aircraft, and the video is transmitted in real time.

There are many functions on the helmet.

1.Provides oxygen, high vacant oxygen.

2.Helmet sights, which can be looked at, and the missile is pointed at 3A communications system to communicate with towers, friendly aircraft, or troops.

4.The voice recognition control system is to speak and give certain simple commands to the aircraft, without having to operate it by hand.

I believe that many friends have seen this phenomenon in various film and television works, fighter pilots will wear oxygen masks and helmets when flying, giving people a cool feeling, but pilots who drive transport planes, bombers and even civil aircraft basically do not wear oxygen masks, which can't help but make us wonder, are all pilots, why do fighter pilots wear oxygen masks, but transport planes and bomber pilots don't use it? Here comes the answer, let's find out together.

First of all, we have to know the difference between fighters and transport aircraft, bombers, and civil aircraft, the fighter is the smallest, but the flight speed is the fastest and most flexible, and the firepower carried is also very powerful, while the transport aircraft, bomber, and civil airliner are about the same size, and the flight speed is not as fast as the fighter and not so flexible, usually they are flying smoothly in the air at cruising speed, and the pilot does not need to pull the aircraft up or fly upside down to the limit, so the flight attitude of the transport aircraft and bomber is more stable. This is one of the main reasons why fighter pilots need to wear oxygen masks and other aircraft don't, let's talk about it in more detail below.

The reason why fighter pilots need to wear oxygen masks is because pilots will carry out a variety of flight actions when piloting fighter jets, which will produce overload, and overload will lead to insufficient blood supply and oxygen supply to the pilot's brain, which can easily lead to fainting and temporary blindness of the pilot, so wearing an oxygen mask is to ensure that the pilot can supply oxygen in time. Modern fighter jets can generally withstand 9G overload, but ordinary people can only bear about 4G overload at most, once the human body is beyond the tolerance limit, then people will gradually lose consciousness, the aircraft will become uncontrollable, the final result is often unimaginable, so with an oxygen mask can allow the pilot to forcibly supply oxygen to the lungs when flying with a large overload, so as to maximize the safety of the pilot. In addition, there are anti-load suits, anti-overload cockpits, compensatory vests and other equipment that can be used to improve the pilot's anti-overload ability.

In contrast, transport aircraft, bombers, and civil aircraft do not need to wear oxygen masks, because these three types of aircraft do not need to overload flights, so the pilot will not appear unconscious, in addition, modern large aircraft are generally equipped with pressurized cockpits, which can ensure that the aircraft has enough oxygen in the cabin when flying at an altitude of 10,000 meters**, so whether it is a pilot or a passenger, you can breathe calmly in the cabin, and passengers will not have altitude sickness, but careful friends will find, Why is there a cover above the seats on the airliner with oxygen masks inside? In fact, the answer is very simple, once the aircraft structure is damaged or malfunctions, the supply inside the aircraft will be insufficient, and it is necessary to wear oxygen masks to ensure oxygen supply.

Finally, the principal believes that because the fighter jet flies differently from other aircraft, it often needs to fly with large overloads, so the pilot needs sufficient oxygen**, which is the main reason why fighter pilots need to wear oxygen masks. What do you think about this?