Why causes a plane to fly (the scientific explanation)?

Answer 1

Wikipedia "Bernoulli effect' for a start. It explains how pressure decreases with velocity. Also check Boyle's Law. Pv=nrT

But the quick and dirty is:

As velocity of air increases, the static pressure drops.
The shape of an airfoil, as you might have noticed , is cambered. The distance over the top of the airfoil is greater than the distance along the bottom therfore,as an airfoil is pushed through the air, the air must flow faster over the top than along the bottom.
This difference in velocities between the flow along the top and the flow along the bottom of an airfoil causes a differrential in pressure and this is what provides the lift.
Other factors such as the shape of the airfoil, density of the air etc also have a factor.
Often overlooked and not to be forgotten is something called Newtonian Lift.
Simply put. the angle at which an airfoil hits the air causes a downward reaction of the air. Since every action results in an opposite and equal reaction..the result is Lift. An example of this would be a piece of plywood on the roof of a car. If the wind gets under it..up it goes. Even if it is a lousy airfoil....it will still generate lift.
Combine both newtonian lift and bernoulli effect and you have the two factors that account for lift in a modern airfoil (wing)
Hope this answers your question

Answer 2

The air above the wing must move faster than the air below the wing. If it does that then according to Bernoulli's principle the air on the bottom would have more pressure than the air on the top creating lift. Also the wing's angle of attack has a lot of effect on lift. Air coming over the wing must be going sightly downward (relative to the flow of the air) but if the wing's angle of attack is too aggressive a lot of drag will be created and not enough lift so the plane will start to lose altitude.

Answer 3

The shape of an airfoil causes the air to be displaced upward. In trying to keep up with the rest of the air column undisturbed below the air is accelerated. This acceleration (and increase in velocity causes a low pressure on the top of the surface. The low pressure basically “sucks” a plane up into the air.

The rest of flying is the forward vector required to keep the air flowing over the wing and speed to actually get you somewhere.

Answer 4

Lift is needed to get a plane to fly, The wings of a airplane is designed in such a way that air passes over the wing at a faster speed than it does under the wing. This uneven passage of air over and under the wings creates lift.

Answer 5

Simple way to realize what cause it to fly.

Sit in the passenger seat of a car doing at least 40mph. Stick your arm out and hold your hand flat like a wing.

Tilt your hand up and it goes up, tilt it down and it goes down.

But if you are sitting still there is no wind to hold your arm out.

All this is exactly how a plane works. It gets up speed down the runway to get enough wind going by and that cause the lift on the wings cause they have the rudders turned to climb and up it goes.

To come down is the same thing but you slow down some so you come down more and more.

Answer 6

Lift.
Air passes over and under the surface of the wing... low pressure above the wing and higher pressure below. The difference in the pressures creates lift and the plane rises.

Answer 7

Simply put, There has to be an aerodynamic design that will force air faster over a surface and will cause air to move slower under that surface. That will create a lower pressure over the airfoil and cause lift. Of course there must be a source of thrust that will be enough to overcome drag (the opposition to thrust). The thrust must be powerful enough to cause enough airflow to create lift that will overcome gravity (weight).

Answer 8

the top and bottom parts of the wings are different lengths. which means the air going above the wing and below the wing are at different speed which causes the plane to be sucked up into the air basicly.

Answer 9

lift-air psi must greater below wing than above

Answer 10

difference of air pressures