Optimal pitch-diameter ratio maximising open-water efficiency for a given advance coefficient - the basic diameter / pitch trade-off.
Formula
$$ (P/D)_{opt} \approx f(J) $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $J$ | Advance coefficient | - | V_A / (nD) |
| $P/D$ | Pitch-diameter ratio | - | propeller geometry |
Sources
- Oosterveld & van Oossanen - SNAME 1975.