Along-ship thrust of a rigid wing sail given sail area, lift coefficient, relative wind and angle - Oceanbird/WindWings design principle.
Formula
$$ T = \tfrac{1}{2} \rho_a C_L A V^2 \sin \beta $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $A$ | Sail area | m² | sail geometry |
| $C_L$ | Lift coefficient | - | wind-tunnel test |
| $V$ | Apparent wind speed | m/s | anemometer |
Sources
- BAR Technologies - WindWings.