how does a plane takes off?

Answer 1

The engine exerts force on the airplane and moves the air plane forward.
when moving the wings go cutting through the air.
The Air plain 's wings are made in a special shape. It's top surface is curved and the lower surface is flat. This curved shape of the upper surface causes air to travel faster on the top of the wing than the air traveling over the flat bottom surface.

when considering fluids like air the pressure increases when speed decreases according to Bernoulli's Equation***.
(P α 1/V)

so the pressure at the bottom of the wing is higher than the pressure at the top. Thus there is a unbalanced pressure being exerted on the wing 's square area
This causes a force to generated upwards on the wing.

This force makes the Plane to take off & to keep flying.

So it's clear that you need an atmosphere to ride a plane.

*** Bernoulli's Equation
If there is a steady flow a nonviscous, incompressible fluid
which has a density of ρ, a speed of v and a elevation of h and a pressure of P

P + ½ρv² + ρgh = k (k is a constant)
which means the value of P + ½ρv² + ρgh doesn't change
no matter the point considered in the flow.

Answer 2

The wing transform forward motion into lift by taking advantage of the Bernoulli's equation. If you take a careful look at an aircraft wing, you will see that the bottom surface is straight, yielding the shortest distance between front and rear edges. The top surface is curved.

Now the Bernoulli's equation states that at equal temperature and height, the air pressure diminishes with air speed. If you consider two molecules of air called B and T in relation to the wing. Initially B and T are standing one next to the other, until the wing, slashing through the air, separates them. B sticks to the bottom surface, and T sticks to the top surface of the wing. Laminar flow (a requisite for planes to fly) says that B and T will reconnect at the rear edge. But to do so, they go through different path and T's path is longer than B's path, therefore T will experience higher velocity with respect to the wing, which translate into lower pressure than B during the passage of the wing. This pressure differential: higher below, lower above, is called lift.

Answer 3

The engine accelerates it down the runway until the airflow over the wings creates enough lift to overcome the weight of the plane. Then the pilot changes the angle of the elevator (the horizontal flap usually located at the back of the airplane), causing it to point into the sky. The lift from the wings lifts the plane off the runway, and off they go.

Answer 4

A plane has a take off speed and a stalling speed.
To take off you barrel down the runway till you reach the recommended take off speed for that plane,say 80 knots,you apply back pressure to the yoke,after the wheels come off release the pressure a bit to gain flying and climb speed say 95 knots and 500 ft per min climb,and you are on your merry way.
There, of course, is more to it than that.
When you get up there,you have to come back down,and if you don't know what you are doing you will be lucky to walk away from it.
It is simple when you know it but deadly if you don't.
There are technical details that I didn't go into you need professional instructions..
Don't try it at home!

Answer 5

The engines provide forward thrust so the plane moves forwards. Then the shape of the wings converts some of this thrust into lift. The wings are at an angle and have a special shape that generates lift from the motion of air.

Answer 6

So, how does a wing generate lift? To begin to understand lift we must return to high school physics and review Newton’s first and third laws. (We will introduce Newton’s second law a little later.) Newton’s first law states a body at rest will remain at rest, or a body in motion will continue in straight-line motion unless subjected to an external applied force. That means, if one sees a bend in the flow of air, or if air originally at rest is accelerated into motion, there is a force acting on it. Newton’s third law states that for every action there is an equal and opposite reaction. As an example, an object sitting on a table exerts a force on the table (its weight) and the table puts an equal and opposite force on the object to hold it up. In order to generate lift a wing must do something to the air. What the wing does to the air is the action while lift is the reaction.

the air comes straight at the wing, bends around it, and then leaves straight behind the wing. We have all seen similar pictures, even in flight manuals. But, the air leaves the wing exactly as it appeared ahead of the wing. There is no net action on the air so there can be no lift! . The air passes over the wing and is bent down. The bending of the air is the action. The reaction is the lift on the wing.