Drag Coefficient Rechner — Formel
## Aerodynamic Drag Force
Drag opposes the motion of an object through a fluid.
### Formula
**F_d = 0.5 Cd rho A v^2**
- *Cd* = drag coefficient (shape-dependent, dimensionless)
- *rho* = fluid density
- *A* = reference frontal area
- *v* = velocity relative to fluid
Common Cd values: sphere 0.47, streamlined body 0.04, flat plate 1.28, car 0.25-0.45.
Drag opposes the motion of an object through a fluid.
### Formula
**F_d = 0.5 Cd rho A v^2**
- *Cd* = drag coefficient (shape-dependent, dimensionless)
- *rho* = fluid density
- *A* = reference frontal area
- *v* = velocity relative to fluid
Common Cd values: sphere 0.47, streamlined body 0.04, flat plate 1.28, car 0.25-0.45.
Lösungsbeispiel
Sphere (Cd = 0.47) of cross-section 0.01 m2 in air at 20 m/s.
- F_d = 0.5 * 0.47 * 1.225 * 0.01 * 400
- F_d = 0.235 * 1.225 * 4
- F_d = 1.152 N