During take off, the thrust overcomes the drag and the lift overcomes the weight and the airplane becomes airborne. In the air, the airplane is pushed forward by a jet engine or propellers. This forward force, which generates the wind against the wings, is known as thrust. As air pushes against the plane, it causes drag that slows the plane, thereby reducing the wind speed and the lift. In order for the plane to fly smoothly, all the forces should be equal.
Most airplanes also have flaps attached to the wings.
When a pilot tilts the flap, the shape of the wing changes. This gives the pilot more control over the lift and drag and is especially useful for takeoff and landing when the plane flies slowly. All Rights Reserved. Please read our Privacy Statement and the Terms and Conditions under which this service is provided to you.