We know that flying at high altitudes for a long time is easy to produce adverse conditions such as hypoxia, low pressure and low temperature, so for the safety and comfort of passengers, how do planes ensure that there is enough oxygen in the cabin?
The oxygen supply device usually starts feeding at a height of about 4km.
The oxygen concentration can be increased to compensate for the decrease of oxygen partial pressure.
This measure is generally applicable to low altitude and low speed propeller aircraft.
In addition, the oxygen supply device can also be used as a supplement to the airtight cockpit of jetliners.
The temperature of the atmosphere outside the airtight cabin;
Pressure and other parameters cannot be controlled, that is, the environment outside the cabin cannot be changed or controlled by human beings.
The airtight cockpit is actually a small enclosed environment built in the general environment.
Because the space of this small environment is small, people can easily control the basic parameters of air in this small environment, so as to create a comfortable environment to meet the needs of high-altitude flight.
The cockpit environment control system studies the adjustment and control of this small environment.
The main functions of the air-tight cockpit are as follows: 1. Increase the cabin pressure to ensure that passengers on board have enough partial pressure of oxygen to meet the needs of the human body for oxygen, so that the personnel on board do not have altitude decompression sickness caused by low ambient pressure.
2. Make the cabin easy to warm or cool to ensure the most appropriate temperature.
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