The total drag coefficient (cd) is a dimensionless quantity that measures the total drag or resistance of an object in a fluid environment, such as air or water. It is composed of two main components: the drag coefficient at zero lift (cdo) and the induced drag coefficient (cdi). The drag coefficient at zero lift is the drag that occurs when the object has no lift force, and it depends on the shape, size, and surface roughness of the object.
- Total drag coefficient (cd) .
- Angle of attack (𝛼) in rad
- Zero lift drag coefficient (cd,0)