The coefficient of drag (Cd) is a dimensionless parameter that quantifies the resistance an object experiences as it moves through a fluid, such as air. It is a crucial factor in understanding the aerodynamic performance of various objects, including aircraft, rockets, cars, and other vehicles.
Where:
- Cd is the drag coefficient,
- D is the drag force acting on the airfoil (resistance to motion),
- ρ (rho) is the density of the fluid (air in this case),
- V is the velocity of the air relative to the airfoil,
- b is the span of the airfoil (distance from wingtip to wingtip).
