The total drag coefficient for a small angle of attack () refers to the drag coefficient of an airfoil or aircraft when it is operating at a small angle of attack () with respect to the oncoming airflow. In this context, “small angle of attack” typically means that is sufficiently small so that the effects of lift generation are relatively minor, and the primary sources of drag are parasitic drag components such as form drag and skin friction.
- Total drag coefficient (cd)
- Angle of attack (𝛼) in rad
- Zero lift drag coefficient (cd,0)