Dimensionless thrust coefficient KT at a given advance coefficient J for a B4-40 Wageningen B-series propeller at P/D = 1.0 - simple regression lookup for preliminary design.
Formula
$$ K_T \approx a_0 + a_1 J + a_2 (P/D) $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $J$ | Advance coefficient | - | J = V_A / (nD) |
| $P/D$ | Pitch-diameter ratio | - | propeller geometry |
Sources
- Oosterveld & van Oossanen - SNAME 1975.