Why do passengers in high altitude

See also: The truth about oxygen masks on planes. The higher you get, the colder it gets, up until 40, feet. If the temperature at ground level was 20C, at 40, feet it would be C. At 35, feet the air temperature is about C. Has anyone seen comedian Eddie Izzard's Glorious , where he does a sketch about taking a flight in a very small aircraft with only a handful of passengers?

He jokes that the pilot's announcement is thus: "Welcome to Flight One from here to there. We'll be flying at a height of ten feet, going up to 12 and a half feet if we see anything big. Aircraft must not fly less than feet above the "highest fixed object" beneath them and pilots must make sure that they are high enough to clear the congested area below in the event of engine failure.

Obviously, these don't apply to take-off and landing when aircraft are in controlled flight paths. See also: The world's 10 scariest airports to fly into. There is no maximum altitude for flying, however, engines will struggle as the oxygen levels fall, and communication with the ground will become a greater challenge. The record altitude for a jet plane is , feet, set by Alexandr Fedotov in flying a military Soviet MiGM. Incidentally, the record for a paper plane is 89, feet, which did not fly to that height but was released by a helium balloon.

See also: The reason you always board a plane from the left side. See also: The real reason cabin lights are dimmed for take-off and landing. According to the Cleveland Clinic , age, sex, and general health do not seem to make a difference in risk for altitude sickness. However, while general health may not be a risk factor for altitude sickness, high elevations could exacerbate heart or lung conditions.

You may also benefit from taking an over-the-counter pain medication for your headache. Mild altitude sickness symptoms usually start to dissipate once the altitude level has been adjusted. If you get mild altitude sickness on an airplane, your chances for full recovery are excellent provided you treat the condition quickly.

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Learn why this happens and how to…. According to The Points Guy , when planes run into air pockets and fierce winds, air traffic controllers can sometimes suggest different altitudes to avoid it. According to USA Today , flying higher can actually minimize turbulence. According to Traveller , should something happen that would warrant an emergency landing, the high altitude gives pilots much longer to fix the situation or find a safe place to land than if they were on a light aircraft cruising at 10, feet.

Not all planes are made to cruise at the same altitude. A flights direction as mentioned above , the amount of turbulence based on reports by other pilots in the air , and flight duration are also factors.

By Andrea Romano September 08, Save Pin FB More. At the optimum altitude, operating costs will be minimum when operating in the most economical ECON mode; it is also the cruise altitude for minimum fuel burn when in the Long Range Cruise LRC mode. In both cases, optimum altitude increases with reducing aircraft weight. If the aircraft is at its maximum certified level or the altitude is operationally capped, speed reduction as weight decreases will help to maintain a minimum fuel burn profile.

Maximum operating altitude is determined by reference to three basic characteristics which are unique to each aircraft type. It is the lowest of:. For conventional airplanes, a C of G towards the aft limit of the mass and balance envelope means less longitudinal stability whereas an aircraft with a C of G near the forward limit means greater longitudinal stability.

Since an airplane is dependent on the elevator to provide pitch control, the forward C of G limit occurs at a point where the increase in stability will not exceed the ability of the elevator to provide this control.

If the C of G moves forward, additional force is required on the elevator to raise the nose up causing the stall speed to increase. The relative longitudinal instability which comes when the C of G is near the aft limit means that the inherent susceptibility to loss of control is greater. Less effort is required by the tailplane to counteract the nose down pitch moment of the wing and this results in less induced drag on the entire aircraft and thus maximises efficient flight.

The wing can be stalled at any airspeed, true or indicated, and at any altitude, and aircraft attitude has no absolute relationship to the onset of an aerodynamic stall.

If the wing angle of attack exceeds the stalling angle of attack, the wing will stall.