How does an aeroplane fly and the mechanism involved?

Question

What is the mechanism involved for the aeroplane to move up?
You can take into granted that I know the basic terms........................gravity, air resistance etc..

I want to know exactly what is making the airplane to move up after attaining considerable speed on the ground.

Answer 1

Most people who are somewhat familiar with the subject, will give you some kind of arcane, esoteric response about the special "airfoil" shape of the wings, Bernoulli's Principle, and air moving faster over the top of the wings than the bottom causing reduced pressure. Indeed, this is the answer you'll find in most books.

It's also hogwash.

Airplanes fly because of the simple fact that their wings *deflect air downwards*;(due to their "positive angle of attack.")

This is in accordance with Newton's third law: "for every action there is an equal but opposite re-action." Thus, for the wings to generate upwards lift, they must force a corresponding amount of air downwards. If a wing does not cause a net downwards motion of air, then,(according to the principle of conservation of momentum,) it will not produce lift: *no matter what it shape.*

Then, what does the "airfoil" shape have to do with it?

The modern airfoil is the result of a long process of tinkering, experiment, and trial and error, beginning even before the Wright brothers. Aircraft designers may not always get the physics right, but they know when something works and when it doesn't. It turns out, that the airfoil shape produces the least drag, the least turbulence, works well at the most angles of attack, and is least likely to stall. For level flight, though, a curved "comma" shape which you'll find in birds, insects, and hang gliders, may be able to produce more lift.

Hope that makes sense,
~W.O.M.B.A.T.

Answer 2

I think the most important thing is the power of the engine, not all that crap about the wings, how will the plane take off in the first place if there is no pulling power? Now that we have that part understood, then we go to the wings, they are placed and designed in a way that the air flowing throught the airplane, that is above and below. There is more wind-air below the plane that will cause the plane to gain altitude. At some point when the desire altitude is gained the pilot will adjust the wings so that plane stabilizes and keep the same altitude. Or just go to a pool and put your fingers together and make your hand flat, then drive your hand under water and move it in different directions, you will see how it your hand changes directions, thats exactly the same thing with the airplane wings.

Answer 3

Aeroplane Mechanism

Answer 4

Lift, the air that passes over the wing moves faster than the air under the wing due to the shape of wing, a space of lower pressure is created above the wing and a force is applied in the upward direction, the leading edge of the wing is then tilted up by moving the elevator of the plane up, this gives an angle of attack and the plane leaves the ground.

Answer 5

Bernoulli's principle keeps airplanes (aka aeroplanes) in the sky. Here's how.

A/C wings are cambered (which means they curve upward) so that the distance over the top is greater than the distance underneath. This camber results in a clump of air splitting as the wing leading edge knifes through it; so half of that clump travels over the wing and half of it passes under. Because that clump has to arrive at the trailing edge of the wing at the same time to stay intact as a clump, no matter which direction it goes past the wing, the half above the wing travels faster than the half below the wing because the half above the wing has farther to go. And that's where Sr. Bernoulli comes into play. [See source.]

Seems like when air travels faster, it loses static pressure over the surface of the thing the air is traveling over (like the top of a wing). Thus, the static pressure above a wing is less than the static pressure below a wing because of the wing's camber. And PA = F; where P is the static pressure under a wing, A is the wing area, and F is the force underneath the wing. Similarly, pA = f; where p is the static pressure above a wing and f is the force on the top of the wing.

So, the two forces (f and F) are acting in opposite directions: f is pushing down and F is pushing up. But f < F, due to Bernoulli, and F - f > 0 and there is a resulting net upward force we call lift (L). And that lift is what keeps A/C in the sky.

Answer 6

The wing is curved on top, flat on the bottom.
As it moves through the air, air on the top of the wing takes the curved path and air on th bottom takes the straight path. If two air particles are next to each other at the front of the wing and each splits off, one taking the top curved path and one taking the bottom straight path they will meet each other at the end. The top guy went a farther distance (took the curved path) than the bottom guy (who took the straight path), in the same time. Hence the top guy went faster.

Since VELOCITY IS INVERSE TO PRESSURE, the pressure at the top of the wing is lower than the slower moving air at the bottom of the wing.

There you have it. The pressure at the top of the wing is lower than the pressure at the bottom of the wing and lift is generated.

Answer 7

ok, so you know how the air plane wings are curved?

so there is a flat bottom, and a bump at the front of the wing, kinda like a half raindrop shape. The air going over the wing becomes high pressure, while the air under the wing is lower pressure. The air on top of the wing gets to the back and drops down top even the pressure out, blowing down and creating lift.

there you go.

Answer 8

It's known as "The Coanda Effect", the principle that shows the tendency of a stream of fluid to stay attached to a convex surface, rather than follow a straight line in its original direction. The principle was named after Romanian discoverer Henri Coandă, who was the first to understand the practical importance of the phenomenon for aircraft development.
Check the source. You'll see some nice animations related to this effect, which will help you understand it quite clearly.

Answer 9

it is all to do with the shape of the wing. it has to with the air travelling faster (therefore less pressure) over the top of the wing therefore creating less resistance compared to the air travelling slower under the wing (more presurse pushing the wings up) .this creates lift.

Answer 10

im not sure i understand your question perfectly, but......

the way an airplanes wings are designed is the top is slightly rounded while the bottom is flat so it takes the air longer to travel across one wing (the top i believe) than the bottom

this creates lift