Pre-Swirl Stator - Energy Saving
Fuel-saving estimate from a pre-swirl stator (asymmetric guide vanes ahead of propeller) - 3–6 % typical on full-form hulls.
Annual fuel saving
324.8t/yr
USD saving
201,376USD
Formula, assumptions, and limits
Pre-swirl stator works by swirling flow opposite to propeller rotation - recovering rotational energy loss. Works best at design draft / service speed.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Saving fraction | - | model test |