how aeroplane can fly?

Answer 1

Two basic principles contribute to how an aircraft can fly. Bournoulli's Principle (as the speed of a fluid increases, its pressure decreases) and Newton's Third Law (every action has an equal and opposite reaction, unless it is a spinning body, then the reaction is 90 degrees ahead in the in direction of rotation). An airfoil is shaped such that the top of the wing has a LONGER ARC than the lower portion. Let's look at bournoulli...Since two molecules of air that start out at the leading edge of the airfoil will reach the trailing edge of the airfoil, then the molecule that goes over the LONGER ARC with have to be moving FASTER. As the speed of this fluid air is increased/more it will have a LOWER pressure than the air under the wing. Pressure moves from High pressure to Low...just like the wind. Wind moves from High pressure to Low and so does the pressure under a wing. Since the pressure is LOWER on the top of the airfoil, the airfoil gets pushed up. Now Newton... every action has a equal and opposite reaction. SO, if you strike the BOTTOM of the wing, it gets pushed up. Newton does not contribute as much as Bournoulli but it is a factor.

Answer 2

Airplanes can fly because of what's known as the Bernoulli Principle. The wings are curved on top, and flat on the bottom, and as air rushes over the wing, it has a lower pressure as it flows over. The high pressure then pushes the wing up, producing a force known as lift. If the airplane is not moving forward at a speed where air no longer flows over the wing, lift is no longer produced and that makes a condition known as a "stall."

Answer 3

A plane flys because of lift. Lift is produced by the planes wings and all it is is when a moving flow of gas is turned by a solid object. The flow is turned in one direction, and the lift is generated in the opposite direction, according to Newton's Third Law of action and reaction. Because air is a gas and the molecules are free to move about, any solid surface can deflect a flow. For an aircraft wing, both the upper and lower surfaces contribute to the flow turning.

Answer 4

What makes airplanes fly are the four forces of flight, thrust, provided by the engines, propelling the airplane forward, lift pulling the airplane up, drag pulling the airplane back, and weight, or gravity pulling the airplane down. How much an airplane weighs, depends on the plane. Small 4 seater training planes, such as Cessna 172s weigh about 2000 pounds. Commercial planes, such as 747s, weigh about 430 tons.

Answer 5

The shape of the wings creates Low pressure over the top and high pressure underneath which then lifts them and the plane.



http://en.wikipedia.org/wiki/Airplanes

Answer 6

Go to the following blog:
'Ask Dr. Dingo' at http://geotoons.com/blog/

Answer 7

Magic. Smoke and mirrors.

Answer 8

look it up