So that the passenger and crew remain alive.
At 40,000 feet a person with an oxygen mask breathing pure oxygen will have cognitive (thinking) problems.
Pressurising the cabin removes the risk, discomfort and other issues with oxygen systems.
The highest altitude is 8,000 ft. But depending on the aircraft, it is usually pressurized to around 6,500 to 7,000 ft.
Modern aircrafts are pressurized so that people can breathe onboard. It would be better for the structure and the aircraft if it was not pressurized, that way there would be no stress on the material. However, the aircraft needs to be pressurized, for people to breath. Normal pressure on earth is around 14,7 PSI (ISA Standard) or 1 Bar (ISA Standard). Aircrafts are pressurized to a height of 8,000 ft. Sensors are installed to determine if the cabin altitude exceeds 10,000 ft. At this point the crew will be warned, and if the altitude should increase to more than 14,000 ft the oxygen masks will automaticly deploy. Humidity in the air is created by recirculation of the air in the cabin.
Aeroplanes (Air-crafts) for commercial and military purpose: Yes Bangladesh has many Aircrafts on both the sectors. All the aeroplanes are imported. Bangladesh on its own can't build or assemble aircrafts. No such facilities.
Any commercialy owned aircraft by a buiseness, or airline, with a livery that is painted on all aircraft in that airlines fleet.
At 35,000 feet, a human would suffer severe oxygen starvation without a pressurized cabin. Also known as "death". A pressurized cabin in a commercial - or military - airliner is essential at high altitude.
At altitudes above 10,000 feet there is not enough air for humans to breathe. Aircraft cabins are pressurized so the pressure is equal to that at about 7,000 feet. Commercial airliners fly at altitudes up to 40,000 feet.
McDonnell Douglas is an American aerospace and defense contractor. They have made a number of the most famous military and commercial aircrafts known to Americans.
The math behind aircrafts is very complex gemoetry and physics.
Except in special aircraft, the hold of an aircraft is usually not pressurized, and the pressure is the same as the atmospheric pressure outside the aircraft The passenger compartment, as I recall, is usually pressurized to about 6 to 8 thousand feet.
Generally yes. Few large commercial airplanes travel under 10,000 feet where you need oxygen or pressurization.
There are about 312000 aircraft's in the world and out of them 17700 are passenger carrier aircrafts
Car 21 is a aircraft regulatory Authority. It regulates the changes and approval of all requirements to aircrafts commercial and business. The application process is the first requirement.