- Why do planes fly at 35000 feet?
- Can a human survive at 37000 feet?
- At what speed do planes take off?
- What is the temperature at 40000 feet?
- Why is flying over Antarctica illegal?
- At what height can you not breathe?
- What happens if a jet flies too high?
- Do Flights take off in thunderstorms?
- How do pilots deal with turbulence?
- Can planes fly at 50000 feet?
- Why do pilots prefer to fly at 36000 feet?
- How cold is it at 35000 feet in the air?
- Do planes eject toilet waste?
- Why do airlines fly so high?
- Can you breathe at 35000 feet?
Why do planes fly at 35000 feet?
The “sweet spot” of flying is regarded as between 35,000 and 42,000 feet – too high and the oxygen becomes too sparse to fuel the engines, too low and the air resistance is greater.
This optimum height is linked to the usual weight of a commercial jet – that is, heavier planes fly lower, and lighter higher..
Can a human survive at 37000 feet?
Between 62,000 and 63,500 feet (18,900 and 19,350 meters) blood begins to boil at body temperature. This altitude, referred to as the Armstrong limit, is generally considered to be the absolute limit compatible with life. At this point, humans cannot survive without pressurization measures.
At what speed do planes take off?
The speeds needed for takeoff are relative to the motion of the air (indicated airspeed). A headwind will reduce the ground speed needed for takeoff, as there is a greater flow of air over the wings. Typical takeoff air speeds for jetliners are in the range of 240–285 km/h (130–154 kn; 149–177 mph).
What is the temperature at 40000 feet?
Between 30,000 and 40,000 feet (9,000 and 12,000 m), the cruising altitude of most jet aircraft, air temperature ranges from -40° F to -70° F (-40° C to -57° C). Modern aircraft have sealed cabins and heaters to protect pilots and passengers from wind blast and cold air.
Why is flying over Antarctica illegal?
Why don’t planes fly over Antarctica? The White Continent does not have much in the way of infrastructure and herein lies why planes do not fly over it. Something called ETOPS (Extended Operations) governs how far from an emergency diversion airport certain aircraft are allowed to fly, according to its model.
At what height can you not breathe?
8,000 mIt refers to altitudes above a certain point where the amount of oxygen is insufficient to sustain human life for an extended time span. This point is generally tagged as 8,000 m (26,000 ft, less than 356 millibars of atmospheric pressure).
What happens if a jet flies too high?
When the plane gets too high, there is insufficient oxygen to fuel the engines. “The air is less dense at altitude, so the engine can suck in less and less air per second as it goes higher and at some point the engine can no longer develop sufficient power to climb.” …
Do Flights take off in thunderstorms?
Jet aircraft can safely fly over thunderstorms only if their flight altitude is well above the turbulent cloud tops. The most intense and turbulent storms are often the tallest storms, so enroute flights always seek to go around them. … Flights avoiding New York area weather-impacted airspace on September 11, 2013.
How do pilots deal with turbulence?
Pilots will use the radar to avoid large clouds, and will slow down if it gets bumpy, to ensure a smoother ride. And even though it sometimes feels as though you’ve fallen 50 yards, the plane will rise or fall only by a couple of feet during all but the very worst turbulence.
Can planes fly at 50000 feet?
Currently, no passenger airplanes are “able” to fly at 50,000 feet or above. Because, at these altitudes, air density is very low, which wouldn’t sustain the heavy weight of the passenger aircrafts. Commercial airplanes have an Absolute Ceiling of 43000 feet.
Why do pilots prefer to fly at 36000 feet?
The first is the thinner air. Since 36,000 feet is a further 7000 feet higher than the peak of Mount Everest, the air up there is pretty thin. That allows the aircraft to travel faster while using less fuel. Flying at this height also lessens the chance of a plane coming into contact with something else.
How cold is it at 35000 feet in the air?
At 35,000 ft. (11,000 m), the typical altitude of a commercial jet, the air pressure drops to less than a quarter of its value at sea level, and the outside temperature drops below negative 60 degrees Fahrenheit (negative 51 degrees Celsius), according to The Engineering Toolbox.
Do planes eject toilet waste?
Some lavatory excrement had leaked out.” Do airplanes ever dump their waste while in flight? Not intentionally. … (The noise may make it seem like the toilet is flushing your waste out into the atmosphere, but it’s not.) Under normal circumstances, the ground crew disposes of the sewage after the plane lands.
Why do airlines fly so high?
How high do planes actually fly? One reason that planes cruise above the clouds is so they can fly fast. The higher airplanes climb, the thinner the air gets, and the more efficiently they can fly because of less resistance in the atmosphere, according to Ryan Jorgenson, an aviation data analyst.
Can you breathe at 35000 feet?
At 10,000 feet above sea level, the normal saturation for a human breathing regular air is 87 percent. … That point is around 28,000 to 30,000 feet. Above that, there isn’t enough oxygen pressure even when breathing pure oxygen to shove the O2 molecules across the membranes and into the hemoglobin.