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A wing creates lift by imparting a downward momentum to the air flowing above and below it. The rate of change of momentum is equal to Force (Newton's 2nd law), and therefore a reaction force pushes the wing up, producing lift (Newton's 3rd law).
The imparting of this downward momentum ("downwash") to the air results from an air pressure differential above/below the wing. If you know the pressure above the wing and the pressure below the wing, and the wing area, you can calculate the lift force on the wing since Force = Pressure x Area. If you don't know the pressures, you can get a rough estimate if you know what the average air velocities are above and below the wing. A wing creating lift will have higher speed air flowing over the top of it than flowing below it. By employing Bernoulli's Principle, you can calculate a pressure difference corresponding to the difference in velocity.
An airfoil shape is effective in generating lift since it helps to keep the air flowing smoothly around the wing, making the wing more effective in diverting the air downwards. Air tends to flow more smoothly around curved shapes rather than abrupt sharp edges which is why the top of an aircraft wing always is curved. Even a perfectly flat wing can create lift (such as in a toy balsa wood glider). However a flat wing isn't practical for a full sized airplane since it's not quite as effective in producing lift. The air doesn't flow smoothly past the sharp leading edge, resulting in a lot of drag and an abrupt stall.
Note that there is no requirement that the air molecules separating at the leading edge and flowing below the wing meet up with the same molecules that flow over the top. This is called the "equal transit time theory" and is a popular science myth that unfortunately has found it's way into flight manuals and even some undergraduate texts. However, aerodynamics engineers have known ever since they started doing wind tunnel testing that the air flowing over a lifting wing reaches the trailing edge sooner than the air below it. This is true even for a perfectly flat wing. This can be explained in terms of the circulation theory, which is an advanced concept.
What else can I help you with?
How does a rocket fly how does an aeroplane fly?
A rocket flies by expelling gases at high speeds through its rocket engine, creating thrust that propels it forward. An airplane flies using lift generated by its wings as it moves through the air. The shape of the wings and the speed at which the airplane travels help create the necessary lift for flight.
What is the most important part of the plane?
The most important part of the plane is the wings, as they provide lift and stability during flight. Without wings, the plane would not be able to generate the necessary lift to stay airborne.
How do airplanes fly when they are heavier than air?
Airplanes generate lift using their wings, which creates a pressure difference that causes the plane to rise. This lift force is greater than the force of gravity acting on the plane, allowing it to stay airborne. The engines provide thrust to propel the plane forward, overcoming drag and allowing it to maintain flight.
When you are in an aeroplane does lift act in the opposite direction to friction?
Lift does not act opposite to friction. Lift opposes weight and friction(air resistance) opposes thrust from the engine. This is all equally true whether or not you happen to be aboard the aircraft.
How do plains fly?
Planes fly by generating lift from the wings as they move through the air. This lift is created by the shape of the wings and the speed at which the plane is moving. Engines provide the necessary thrust to propel the plane forward.
Why aeroplane designed with wings?
An airplane has wings to generate the lift required for flight.
Are birds wings flat for increasing lift?
If they were flat they would generate no lift and birds could not fly. Aeroplane wings are very similar in shape to bird wings - they are nearly flat underneath and convex on top.
What function do the wing play when an aeroplane is landing?
The wings give the aircraft 'lift' especially when it is at a slower speed such as landing
What is the purpose of wings on aeroplanes?
To provide lift.
Why the wings of the airplane is design that way?
Because the whole point is for the wings to provide lift. Many designers spent hours watching how bird wings were shaped and how they moved to provide lift or propulsion.
How does a aeroplane fly?
to have a aeroplane fly you have to use its fans in its wings
How is the way an aeroplane flies different from the way abird flies?
Birds flap their wings while aeroplane do not flap their wings. aeroplane uses engines
What forces act on aeroplane when taking off?
The weight of the aeroplane and its cargo, friction where the plane's wheels meet the runway, the lift provided by the motion of the air around the aerofoil shape of the wings, aerodynamic drag,
What is aeroplane means?
Aeroplane means a vehicle with wings which flies through the air.
How do you fly a aeroplane?
With the help of its wings & the pilot.:):)
Where are the fuel tanks stored in an aeroplane?
in the wings
What metals are used in airplane wings?
The skin covering the wings is aluminium, as is the framework of the wings and the aeroplane's fuselage.
