When is it necessary to use an oxygen mask during a flight?
2024-11-22
During the flight, pilots and passengers need to use oxygen masks in the following situations:
When flying at high altitude: When the flight altitude exceeds 4,000 meters, the oxygen content in the air will decrease, which may cause hypoxia. In order to ensure the breathing safety of pilots and passengers, oxygen masks must be used.
When the aircraft encounters an emergency: If the cabin of the aircraft is depressurized, the air pressure in the cabin drops sharply, and the oxygen content decreases sharply. At this time, oxygen masks must be used to avoid hypoxia symptoms such as dizziness and confusion.
When there is a problem with the sealing of the aircraft cabin: Although the cockpit of modern aircraft is usually sealed, during combat or training, the cockpit may rupture and lose pressure due to enemy attacks. At this time, oxygen masks must be used to ensure oxygen supply.
How to use and precautions for oxygen masks
How to use: Take the oxygen mask off your head, put on the oxygen bottle, and then insert the oxygen tube into the oxygen inhalation port of the mask. The check valve body above the oxygen tube opens to supply oxygen.
Precautions:
Before wearing an oxygen mask, you need to check whether the equipment is normal. If there is any abnormality, you need to report it immediately.
When wearing an oxygen mask, you should stay calm and follow the instructions.
In an emergency, humans can only maintain a clear consciousness for 15-30 seconds in an oxygen-deficient environment, so it is very important to ensure your own safety first.
Historical background and technological development of oxygen masks
Modern fighter pilots no longer breathe pure oxygen completely during flight, but can choose pure oxygen or mixed oxygen close to the natural state during combat. This is due to the oxygen generator installed on the aircraft, which can make its own oxygen during flight and supply air to the crew almost unlimitedly.
