Lift-to-Drag Ratio From Glide Angle Calculator

The lift-to-drag ratio (L/D) is a measure in aerodynamics that represents the efficiency of an aircraft or an airfoil. It is the ratio of the lift force generated by the wings to the drag force experienced by the aircraft in motion through a fluid, such as air. A higher lift-to-drag ratio indicates more efficient aerodynamic performance, allowing for improved gliding capability and fuel efficiency in aircraft. 

where:

• $L/D$ is the lift-to-drag ratio,
• $\theta$ is the glide angle in radian.