The parasite drag coefficient at zero lift in flight mechanics represents the aerodynamic drag coefficient of an aircraft when it’s not producing any lift. It characterizes the drag resulting from factors such as air resistance, surface friction, and form drag. A lower parasite drag coefficient at zero lift signifies better aerodynamic efficiency, as it indicates reduced resistance to forward motion for the aircraft. Parasite drag affects an aircraft’s stability, control, and overall flight dynamics. The formula to calculate Parasite drag coefficient at zero lift as follows:Â
Where:
- CD is the Drag Coefficient.
- CDi is the Drag Coefficient due to lift.