Thrust-loading coefficient τ_c for propeller back cavitation assessment per Burrill 1943 chart - screens whether back cavitation area is acceptable.
Formula
$$ \tau_c = \frac{T}{\tfrac{1}{2}\rho V_t^2 A_P} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $T$ | Propeller thrust | N | powering study |
| $V_t$ | Tip speed | m/s | πDn |
| $A_P$ | Projected blade area | m² | propeller drawing |
Sources
- Burrill L.C. - RINA 1943.