0
Pressurization is achieved by the design of an airtight fuselage engineered to be pressurized, a source of compressed air and an environmental control system (ECS). The most common source of compressed air for pressurization is bleed air extracted from the compressor stage of a gas turbine or turboprop propulsion engine, usually the second or third last compressor ring. By the time the cold outside air has reached this part of the compressor it has been adiabatically heated to around 200 °C (392 °F) and is at a very high pressure. It is then expanded and cooled to a suitable temperature by passing it through a heat exchanger and air cycle machine ('the packs system'). There is no need to further heat or refrigerate the air. Typically, compressed air is bled from at least two propulsion engines each system being fully redundant. Compressed air is also obtained from the Auxiliary Power Unit (APU), if fitted, in the event of an emergency and for cabin air supply on the ground before the main engines are started. Most modern commercial aircraft today have a fully redundant, duplicated electronic controller for maintaining pressurization along with a manual back-up system.
***************************************************************************************
Normal commercial flights have a cabin pressure equal to 7,000 ft ASL. That's just enough to prevent passengers from getting altitude sickness, and the lower the cabin pressure the less stress on airframe. Just trivia for what it's worth.
What else can I help you with?
Why do they pressurize a plane during flight?
A plane is pressurized to ensure that a good supply of oxygen is in the cabin. At 32,000-36,000 feet the oxygen levels are low. It also allows the cabin to stay warm. Without pressure you would pass out from hypoxia.
Why don't the planes used by sky divers depressurize when the door is opened unlike passenger planes where it happens?
Because the planes are not pressurized. No need to pressurize an airplane flying at such a low altitude. Once a plane reaches around 12,000 feet it becomes necessary to pressurize the cabin.
240 people died in the same direction in cabin with windows how did they die?
They were in a plane crash. The cabin is a plane's cabin.
Why are airplane doors and windows completely sealed?
Modern jet airplanes fly at high altitudes, where there is less air and therefore less oxygen. Aircraft cabins are pressurized so that pilots and passengers can have enough oxygen to breathe. There is a high air pressure inside the cabin because outside air (and oxygen) is forced into the cabin by the engines in order to pressurize the inside of the airplane, and this gives people enough oxygen to breathe. This is only possible because the airplane is sealed; if the windows and doors were open, the engines wouldn't be able to pressurize the cabin.
Why cabin altitude is not equal to actual altitude?
Because the cabin inside the plane is pressurized?
Is plane cabin pressure the same as in the cockpit?
Yes, in that sense, cockpit is part of cabin
If Two men were found dead in a cabin on the top of a hill How did they die?
It was a plane crash. The two men were pilots in the cabin of an airplane.
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.
A man is dead in a cabin on the side of a hill how did he die?
It was an airplane cabin that crashed in the woods
What is the description for a airliner plane?
An airliner plane is a passenger plane that can fly in the stratosphere. The cabin needs to be pressurised and heated for the comfort of the passengers.
If a plane is hijack what cabin crew will do?
Have panic attacks and try and do something about it.
What to do in a plane emergency?
Follow the directions of the pilot or his designated cabin staff.
