2006-10-11 00:07:32 · 11 answers · asked by dhanabal_psg 1 in Science & Mathematics ➔ Astronomy & Space
As the plane is propelled forward there is a vacuum created on top of the wing. This is created by the angle of the wing. The force of the air below helps to life the plane. Less force is required on the bottom of the wing due to the vacuum created on top of the wing.
2006-10-11 00:09:13 · answer #1 · answered by Letsee 4 · 0⤊ 0⤋
There is a common misconception that an airplane wing creates all the lift based on it's shape which creates low pressure above the wing. If this were true, no plane could ever fly upside down. This phenomenon creates only a small part of the lift. Most of the lift is caused by the downwash of air off the wing and the angle of attack of the wing against the air it's flying through. If you want a very good explanation, try this site:
http://www.allstar.fiu.edu/aero/airflylvl3.htm
Yes, most high school teachers and texts were completely wrong with the pressure difference explanation.
2006-10-11 05:36:51 · answer #2 · answered by Gene 7 · 0⤊ 0⤋
An aeroplane wing is basically flat on the bottom and curved on top. This means air has further to travel over the top of the wing compared to the bottom when the aeroplane is travelling forward.
This creates negative pressure (or vacuum) in relation to the bottom of the wing and a lift effect, lifting the plane off the ground.
The opposite is true for Formula 1 cars where the curve is under the wing, pulling the car to the ground, allowing it to go faster round corners.
2006-10-11 01:06:41 · answer #3 · answered by gfminis 2 · 0⤊ 0⤋
It is a combination of lift and thrust. The thrust is created by the engines and the lift by the wings. The more efficien the wings are at creating lift the less thrust is needed to keep the plane in the air. Lift is created by the difference in pressure between the upper surface of the wing and the lower surface. This pressure difference is created by the length of time it takes for air to pass over each surface. The air travelling over the upper surface has further to travel due to the shape of the wing, due to the mechanics of having to travel further the same amount of air is distributed over a larger surface area on the upper surface of a wing than the underneath, thus the air on top of the wing is at a lower pressure than the air underneath and lift is created.
If you have a similar question about how F1 cars stay on the road then just reverse the principle.
2006-10-11 01:12:46 · answer #4 · answered by advent m 3 · 0⤊ 0⤋
Air planes get lifted in the air because of its wings. If you see the planes wings, there was a curvature on the upper part and a flat surface in the bottom side. THe air pressure gets by the air in the wings during take off make the air plane lift and fly in the air.
2006-10-11 00:20:35 · answer #5 · answered by ddeshou 1 · 0⤊ 0⤋
To explain we have to consider the airfoil cross section of the wing of airplane. Due to the camber of the airfoil when air stream passes over it there is suction at the top and compression at the bottom. These pressures add up. The pressure differential is not much. For normal transport subsonic airplanes this pressure is of the order of 3to4 Pounds/sq in. Now by making the wing area large we can generate a lift capable of lifting the airplane.This is a simple way to understand the phenomenon of generation of lift which is basically responsible to make flight possible.
2006-10-11 00:16:27 · answer #6 · answered by openpsychy 6 · 0⤊ 0⤋
The wing of a plane is shaped such that the air travelling under the wing has further to travel than the air over the wing (by giving the bottom edge of the wing a greater curvature).
This means that the air above the wing is at a lower pressure than the air under the wing and so the plane is forced upwards to balance the pressure.
2006-10-11 00:12:22 · answer #7 · answered by Stuart T 3 · 0⤊ 0⤋
Planes get lifted into the air by their wings when they go forward fast enough.
If they don't go fast enough, they can't go up.
Birds can fly better than planes in some ways. Hummingbirds can fly up and down and even backwards and don't have to be going forward to fly.
;-D I'd rather be a hummingbird than a jet plane!
2006-10-11 04:27:17 · answer #8 · answered by China Jon 6 · 0⤊ 0⤋
the shape of the wing causes a disparity in air pressure (lowering it) above the wing. as the plane goes faster, the pressure above the wing decreases and lift is created as the pressure below the wing pushes upward.
all you need is a wing with the right shape and a source of propulsion.
Also some control surfaces (elevators.rudder, etc.) for directional control
2006-10-11 01:59:44 · answer #9 · answered by scootda2nd 2 · 0⤊ 0⤋
invisible flying saucers are attached to the top of each plane's wings, and make it fly
w/o this of course planes wouldn't fly
thanks to the aliens for this
2006-10-11 06:17:15 · answer #10 · answered by AntoineBachmann 5 · 0⤊ 0⤋