2007-02-01 03:03:13 · 7 answers · asked by sj 1 in Science & Mathematics ➔ Other - Science
Airplanes stay in the air afloat as long as they cruise at a speed above the minimum threshold, which depends upon the altitude, wind conditions, temperature, humidity and the load being carried etc. The air going over the wings causes a vacuum and lifts the plane, similarly the air going below the wings causes a lift. If the plane's speed goes below the threshold, it starts falling, though with a skilled pilot, it may be possible to land without the engine power.
2007-02-01 03:15:43 · answer #1 · answered by Swamy 7 · 2⤊ 0⤋
As a very simple explanation.
The shape of the wing causes the air passing over the wing to travel further (over the curve) than the air under the wing (flatter surface).
To get to the back of the wing at the same time as the lower air, the upper air has to travel faster. This causes a lower air pressure above the wing than under it.
The pressure difference acting on the huge surface area under the wings causes the air to lift the plane. The faster the plane, the greater the pressure difference.
2007-02-01 05:12:25 · answer #2 · answered by Norrie 7 · 2⤊ 0⤋
Bernoulli's principle. When air passes by the wings, more pressure is created on the bottom than on the top. Follow the link for details.
2007-02-01 03:09:54 · answer #3 · answered by tony m 2 · 2⤊ 0⤋
has something to do with the type of metal or material used to make the plane. Everytime I fly I question that. So oneday I searched it out and found the answer, but shows you how well I retained it huh.
2007-02-01 03:13:37 · answer #4 · answered by Libragirl 2 · 0⤊ 1⤋
without any terrosist on board, otherwise they crash
2007-02-01 03:19:59 · answer #5 · answered by sammy 5 · 0⤊ 2⤋
God does it... don't question the word of the lord
2007-02-01 03:06:11 · answer #6 · answered by RJ 3 · 0⤊ 4⤋
this is due to gravity
2007-02-01 03:39:42 · answer #7 · answered by mailsberry 1 · 0⤊ 2⤋