how does an aeroplane fly?

Answer 1

An aircraft flies due to aerodynamic reactions that happen when there is relative motion between air and a wing.

If a cross-section of a typical aircraft wing is viewed, the top of the wing can be seen to be curved downwards, while the bottom of the wing is less curved or straight, but angled to the airflow. This shape, called an airfoil or aerofoil, creates lift when it travels through the air. However, this optimisation is not applicable for aerobatic aircraft, which need to fly inverted, or for supersonic aircraft.

Lift is created as an airstream passes by something which deflects it. The force created by this deflection of the air creates an equal and opposite force on the wing according to Newton's third law of motion. The deflection of airflow downward during the creation of lift is known as downwash.

Nearly any shape will produce lift if curved or tilted with respect to the air flow direction. However, most shapes will be very inefficient and create too much drag. One of the primary goals of wing design is to devise a shape that produces the most lift while producing the least lift-induced drag.

Answer 2

An aircraft flies due to aerodynamic reactions that happen when there is relative motion between air and a wing.

If a cross-section of a typical aircraft wing is viewed, the top of the wing can be seen to be curved downwards, while the bottom of the wing is less curved or straight, but angled to the airflow. This shape, called an airfoil or aerofoil, creates lift when it travels through the air. However, this optimisation is not applicable for aerobatic aircraft, which need to fly inverted, or for supersonic aircraft.

Lift is created as an airstream passes by something which deflects it. The force created by this deflection of the air creates an equal and opposite force on the wing according to Newton's third law of motion. The deflection of airflow downward during the creation of lift is known as downwash.

Answer 3

Nice answers. I'd just like to add this simple point:

So far, with current technology as far as I know, there are only 3 ways to "fly"

1. Be lighter than whatever you're in (balloons).

2. Throw gas down really, really fast (it's really really light after all) by burning it (rockets).

and...

3. Deflect air coming toward you downwards (airplanes).

Both 2. and 3. use Newton's law of opposite reacitions. To see this law, stand on a skateboard and throw a chair through a window. You'll be thrown backwards, which is a good thing because there will be some glass coming your way.
(By the way, the window has no effect on this, it's just there for a laugh.)

Answer 4

The shape of the wing is such that it is further across the top of it than the bottom. As a result when an airflow strikes the wing, the air that goes over the top has to travel faster than the air that goes over the bottom (otherwise we would lose some air somewhere). The faster moving air has a lower pressure (Bernoulli's principle - but its quite easy to see why here - the air that split to go over the top has to stretch further, because the top of the wing is longer).

The higher pressure on the bottom of the wing pushes it up.

Answer 5

Bernoulli's principle. As the air passing across an airfoil (airplane wing), the air above the wing is compressed with respect to the air passing below. This creates a difference of pressure that causes lift which allows the airplane to fly.

Answer 6

with the help of 3 main things

1- Air which hold the plane
2- Wings which helps to glide the plane
3- Force to move forward like engin

Answer 7

with an engine and wings

Answer 8

Don't you want to know how to land too... You aren't a stinking terrorist are you.....