The lift-to-drag ratio (L/D ratio) is a measure of the efficiency of an aircraft or any aerodynamic object. It’s calculated by dividing the lift force generated by the object by the drag force acting upon it.Â
Where:
- Lift is the force perpendicular to the direction of motion, typically generated by the wings of an aircraft.
- Drag is the force parallel to the direction of motion, opposing the motion of the object.