why aeroplanes don't just fall out of the sky??????

Answer 1

lift effect of the wings ( combined with power in most cases )

the air moves at a faster rate over parts of the wing due to shape - this causes a low pressure area on top of the wing - the air under the wing pushes the wing towards the low pressure area ( up ) this is what provides the lift

fold a paper airplane and see it yourself !

Answer 2

Because thrust and lift exceed drag and gravity.

The thrust of the engines forces the aircraft forward (against air resistance or drag) thereby forcing air over the wings. The wings are so shaped that the air passing over the wing has to travel a longer distance than the air passing under the wing. This means that the air under the wing is at a higher pressure relative to the air above the wing, producing lift. As long as the lift generated is greater than the force of gravity pulling the aircraft down then the aircraft will stay in the air.

Answer 3

Air flow over an aerofoil creates areas of different pressure low on top and high below the aerofoil this has the effect of the high pressure wanting to get to move to the area of lower pressure lifting the aerofoil with it this we call lift. when lift is equal to the mass of the aircraft and drag the aircraft is in level flight if we increase lift by increasing the angle of attack ( the angle the air meets the leading edge of the aerofoil) the we produce more lift and so ascend. We can increase lift at lower speeds by using leading and trailing edge devices known as flaps and slats these increase the camber of the aerofoil thus producing more lift at lower speeds at higher speeds they produce more drag then lift and so undo the extra lift they provide. Of course it helps to have a power-plant to provide the forward movement to make the air flow over the aerofoil. In the case of gliders they also use the aerofoil but this is longer and thinner then that on a powered aircraft and they also use up-currents of air called thermals to lift the wing and aircraft higher then forward motion from gravity to keep air flowing over the aerofoil and so have a steady descent til the next thermal catches them.

Answer 4

Their wings are curved on the upper side and flat underneath. This causes low pressure above the wings that holds the airplane up, as predicted by Bernoulli's Principle that states that fast moving air has lower pressure than slow moving air. The power from the engine keeps the plane moving fast enough to maintain the lift. If the engine fails, the plane needs to keep up its airspeed by gliding down; in this case gravity supplies the energy, but of course that doesn't work for very long!

Answer 5

I think you heard of the Third Law of Motion. When the so big fans you see move, it pushes the air down. But do you think the air will keep silent, or does it need justice? The second choice, it pushes the wings with the same force to up (the opposite direction). Easy, huh?

Answer 6

the wings of a plane are shaped so that as they pass through the air, lift is created under them because of differences in pressure between above the wing and under the wing. As a result, the plane is given lift providing there is ample wing span and air speed.

Hope to have been of help.

Answer 7

have u seen the power that comes out from the engines of an airplane?? this power is guided from the control pit, this power steer the airplane making it fly and land by moving a piece of the wings with the manipulation of the power engine

Answer 8

Because the wings are so shaped that as air rushes under and over them it imparts lift , as long as the engines drive it forward it stays in the air

Answer 9

because they are made no to fall out of the sky, and also because of their wind designs, the engines and some times there are plane without engines, they only rely on air.

Answer 10

Well they weigh about 75.000 kilos and travel at about 250 miles an hour on 2 rolle royce merlin engines