Propeller - Advance Coefficient J
Propeller advance coefficient J = V_A / (n·D) - the dimensionless speed on open-water characteristics.
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Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| Advance velocity | m/s | |
| Propeller revolutions | rev/s | |
| Propeller diameter | m |
Source: Rawson & Tupper Vol 2
In short
Propeller advance coefficient J = V_A / (n\u00b7D) - the dimensionless speed on open-water characteristics.