Lift is more complicated than the other forces of weight, thrust and drag. It’s created by the wings of an airplane, and the shape of the wing is critical; that shape is known as an airfoil .

Aeroplanes rely on four different scientific forces to fly - thrust, drag, weight and lift - all of which act against each other. When they are all balanced, a plane will fly in a nice ...

For your ring glider or an aircraft to take off, the thrust must be greater than the drag and the lift greater than gravity. In order for it to fly straight, the thrust must be the same as the drag ...