How do planes fly?

Answer 1

It is (in theory) a combination of Bernoulli and newtons third law

Hey John, if your theoy is correct how do planes fly inverted?

Answer 2

Lots of people here are right, but not so clear.

Bernoulli's principle sez that air moving across a surface pushes against that surface less than air standing still, or moving slower. Hold a piece of paper with just your finger tips at 2 adjacent corners stretching it tight, and letting it hang down. Now blow softly across the top of the paper. Did it rise a bit? That's because the moving air (your breath) didn't push as hard as the air underneath the sheet. Now blow harder - did it rise more? Bet it did.

On a wing, the chord line is the line from the spot on the front edge furthest forward, to the spot on the edge furthest back. The top edge of the wing if further away from the chord line than the bottom edge - it's more curved, in other words. When the wing slices through the air, the air that goes above the wing has to travel farther and faster than the air that goes under it. So Bernoulli's principle (remember that piece of paper) sez that there is less pressure above the wing than below, and the wing moves up. The ailerons, rudder, elevator, etc, all serve as a way to bend the airstream going by the plane in order to make it turn, roll, climb, descend, etc.

Answer 3

Bernouli's Principle. The speed and pressure of a liquid or gas change inversly to each other. As the speed increases, the pressure decreases, such as in a venturi (a carburetor uses a venturi). An airfoil such as wing, is simply half a venturi, which creates a low pressure above the wing, and a higher pressure area below the wing. Air always moves from high pressure to low pressure, and the quickest way to get there when a wing is in the way is to lift the wing up. The faster the plane moves, more low pressure is created, allowing a plane to carry more people higher, if the plane goes faster.

Answer 4

there are 4 forces working on all moving airplanes : Thrust , Drag , Lift ,and Gravity.
We can further divide those forces into 2 sets of opposing forces;
Lift/ Gravity and Thrust /Drag
An airplane wing is curved on top- this results in a longer distance for the air traveling across it. When we add Thrust to the formula we discover that there is higher pressure below the wing than above it and as a result Lift is created. When add enough Thrust we overcome the forces of Gravity and we fly. But what of Drag ? Thrust wants us to go forward drag wants to pull us back . We make the airplane as smooth as possible , and retract any thing sticking out- like wheels.

Answer 5

let me explain, cuz what raven says is just nonsense.

the airplane of a wing along with its engine is what makes an airplane fly. The one that creates the lift (the force that makes the airplane go up) is the wing, and the wing can do this because as you may have noticed on the wing of an airplane, the upper surface's curvature is mor pronounced than the lower surfce's curvature, and this difference in curvature makes a pressure differential between the lower and upper surfaces of the wing as the airplane gains speed, which is produced by the engine.
This pressure differential is further explained by bernoulli's principle. in the ad below you can read about his principle.

good luck.

http://home.earthlink.net/~mmc1919/venturi.html

Answer 6

Planes are PFM, Pure Fricken Magic. :)

Nah, the whole areodynamics thread says it all. Create a low pressure on the top of the wind and a high pressure on the bottom and poof you have lift.

Answer 7

Aerodynamics

Answer 8

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Answer 9

simple. the wings create more lift that the airplanes gross weight.

Answer 10

anti-gravity