How high can you fly without pressurization?

Without pressurization, sufficient oxygen can be delivered up to an altitude of about 40,000 feet (12,000 m).

What is the pressure inside a commercial airplane?

The Answer Airliners are pressurized to a level that is equivalent to outside air at about 8,000 ft of elevation (roughly 75 kPa). Airplanes travel at elevations between 31,000 and 38,000 ft. The outside air pressure at that height is roughly 25kPa – about a quarter of the pressure at sea level (~101kPa).

Are aircraft holds Pressurised?

You are right in knowing that the entire aircraft is pressurized- both the cabin and the cargo hold. An aircraft cabin is pressurized mainly to create a safe and ambient environment for the passengers and the flight crew just like they would experience on the ground.

Is the Cessna 208 pressurized?

The strutted, high wing 208 typically seats nine passengers in its unpressurized cabin, is powered by a single Pratt & Whitney Canada PT6A tractor turboprop and has a fixed tricycle landing gear, floats or skis.

Do small planes have pressurized cabins?

Some “small planes” do have pressurization systems built in, so their oxygen-related regulations differ from the more typical private plane. So a brief excursion upward to, say, 13,000 feet, with a return to below 12,000 feet within 15 minutes or so, is completely legal and does not require supplemental oxygen.

Can you survive in the cargo hold of a plane?

There are serious risks associated with the extreme conditions people face if they try to travel in the undercarriage of a plane. These include being crushed when landing gear retracts, frostbite, hearing loss, tinnitus and acidosis – the build-up of acid in body fluids which can cause coma or death.

How high is the air pressure inside a plane?

Airliners are pressurized to a level that is equivalent to outside air at about 8,000 ft of elevation (roughly 75 kPa). Airplanes travel at elevations between 31,000 and 38,000 ft. The outside air pressure at that height is roughly 25kPa – about a quarter of the pressure at sea level (~101kPa). This would be very uncomfortable for humans.

How much turbulence can an airplane withstand?

http://ecfr.gpoaccess.gov/cgi/t/… The FAA also requires airliners to be able to withstand forces of at least 2.5 Gs (this limit differs for aircraft under 50,000 lb), which is quite a lot – a 737 hitting the maximum turbulence specified by the FAA at cruise speed at 30,000 feet might see 2.2 Gs.

Why do airplanes need to pressurize the air inside to breathe?

If you tried breathing at that altitude, your useful consciousness would be less than a minute (followed soon after by death). To survive high altitudes, occupants of an aircraft need help breathing. The solution is to pump air into the airplane so the interior pressure is high enough to keep the humans happy. Why bother with pressurization?

Why can’t we build an airplane that can withstand sea-level pressure?

Exceeding the differential pressure limit is what makes a balloon pop when it’s over inflated. The greater the differential pressure, the stronger (and heavier) the airplane must be built. It’s possible to build an aircraft that can withstand sea-level pressure during cruise, but it would require a significant increase in strength and weight.