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At the altitudes where commercial airliners fly, the atmospheric pressure is too low and people can't stand it (the gases inside humans would expand), so you need pressurization.
Also (us humans) require oxygen to breath and generally carry on living. Although the percentage of oxygen at 20,000feet is exactly the same at sea level.. approx 20%.. the pressure is reduced and so there is not enough pressure to force the oxygen across the lung alveoli barrier into the bloodstream. So we become unconsious and eventually die.
What else can I help you with?
What is the air pressure in an airplane at 35000 ft?
It depends on the pressurization schedule of the Aircraft but in case of an airliner it will be around 6500 feet.
Is the air pressure of a aircraft the same as the air pressure outside above and below?
No, the air pressure inside an aircraft is regulated to be at a comfortable level for passengers, which is usually lower than the air pressure at high altitudes. The difference in pressure is controlled by the aircraft's pressurization system to maintain a safe and habitable environment inside the cabin.
What altitude do you need pressurization in cabin?
Hi, what is the cabin Alt warning Alarm in Fokker 100.?
Who takes load when aircraft flies wing or structure?
structure, ultimately all types of load go to structure like lift load, cabin pressurization load, aircraft maneuvering load etc.
Is aircraft carying cargoes pressurized?
Generally yes. Few large commercial airplanes travel under 10,000 feet where you need oxygen or pressurization.
What are the sources of pressurization and its components?
what are the sources of pressurization and its components
What is the air pressure in an aircraft?
While the pressure outside the aircraft is very low, cabin pressurization allows pilots to pressurize the aircraft cabin to about 11.5 psi. They try to keep the cabin pressurized to make it seem like the air at around 7,000 feet. That's why your ears pop.
When using nitrogen to pressurize a system you should?
Ensure that the system is rated for the pressure of the nitrogen being used, use the appropriate regulator to control the pressure, and always follow proper safety procedures to prevent over pressurization.
Why Sharp pain in forehead during flight?
Before going into the description of "Sharp Pain" it must be clear that a flight consists of three major phases i.e, takeoff/climb, cruise and descent/landing. All the three phases require differernt PRESSURIZATION SEQUENCES to be maintained inside the cabin to maintain the atmospheric pressure conditions that are almost indentical to that of the sea level, normally 14.7 Psi (however the pressure inside the cabin is slightly lower thatn this value). This "Sharp Pain" in the forehead is associated with these pressurization sequences. The pressurization sequence starts as soon as the aircraft starts running on the runway and the cabin pressure is actually increased (as if the aircraft is diving down below the sea level !!!!). This increase in cabin pressure is necessary to counter the effect of reduced atmospheric pressure at higher altitudes. As a result of this PRE-PRESSURIZATION, a sort of pain is felt in the forehead while the aircraft is still on the ground during takeoff phase !!!! Similar sort of experince is witnessed during the descent phase when the ears start aching because of the increase in cabin pressure as the altitude decreases. In this answer I have assumed that the reader is aware of the concept of CABIN PRESSURIZATION of an aircraft. If this concept isn't clear I would be more than happy to explain it in order to better understand why PRESSURIZATION is necessary which ultimately has to do a lot with the Sharp Pain phenomenon !!!!!!
Why do most small aircraft not have retractable landing gear?
because light aircraft use the basic hydraulic system for its operation so its not necassary to be there
What gas is used in airplane?
Airplanes typically use jet fuel, which is a type of kerosene, as their main source of energy. The combustion of jet fuel generates the thrust needed to power the aircraft engines and propel the plane forward. Additionally, compressed air is used in some aircraft systems for pressurization and other functions.
When pneumatic system are use?
There are two types of pneumatic systems currently used in naval aircraft
