Power Against Quadratic Drag
P = (1/2)·ρ·C_d·A·v^3
What it says
The power needed to overcome quadratic aerodynamic drag, equal to the drag force times speed, scales with the cube of speed.
Symbols
| Symbol | Quantity | Dimension |
|---|---|---|
P | Power (W) | M L^2 T^-3 |
ρ | Fluid density (kg/m^3) | M L^-3 |
C_d | Drag coefficient (dimensionless) | 1 |
A | Frontal area (m^2) | L^2 |
v | Speed (m/s) | L T^-1 |
Work it out
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Connects to
Filed under Fluid dynamics · derive through it in the explorer