Boats · Water-ski boat propellers (B-series, 12 to 15 in)
Water-ski boat propeller 14 × 15 in, 4 blades (B4-70 series)
Model designed and computed with the Heliciel software. Design point: 2992 rpm at 16.11 m/s (58 km/h), J = 0.908, sea water. Exact geometry of the Wageningen B4-70 B-series at catalogue size: 14 × 15 in (356 × 381 mm), P/D 1.07, 4 blades. The pack holds both hands of rotation (right-hand and left-hand STL). Strength not guaranteed: at the design point the blade root does not hold in NAB bronze; thickness and material are to be sized for a real propeller.
The pack contains the complete propeller as a full-definition STL with root fillet, STEP surfaces (complete propeller and one blade), the Heliciel .hlc project and the computation records.
Characteristics computed by Heliciel
| Diameter | 355.6 mm |
|---|---|
| Number of blades | 4 |
| Catalogue size (diameter × pitch) | 14 × 15 in |
| Series | Wageningen B4-70 (B-screw series) |
| Expanded area ratio Ae/A0 | 0.70 |
| Pitch ratio P/D | 1.07 |
| Blade shape | B-series segmental sections, constant pitch |
| Hub diameter | 71.2 mm |
| Pitch at 0.7 R | 380 mm (15.0 in) |
| Design speed | 2992 rpm |
| Fluid speed at design point | 16.11 m/s |
| Thrust | 6207 N |
| Torque | 436.0 N·m |
| Shaft power | 136595 W |
| Propulsive efficiency | 0.73 |
| Material used in the computation | nickel-aluminium bronze (NAB) |
| Strength at design point | not guaranteed: blade root to be sized (does not hold in NAB at the design point) |
| K_T and 10·K_Q computed by Heliciel | 0.152 and 0.300 |
| J at maximum efficiency (Wageningen polynomials) | 0.908 |
| Open-water efficiency of the series at this J (polynomials) | 0.71 |
| K_T and 10·K_Q of the series at this J (polynomials) | 0.112 and 0.229 |
| Direction of rotation | right-hand |
| Files included | STL, STEP, HLC |
| Reference | N-356-4p-P381 |
Need a propeller for your own parameters?
This model was designed and computed with the Heliciel software. For a custom propeller there are two ways: the Heliciel software (Windows: computation, 3D view, STL and STEP exports), and the Heliciel MCP connector, which lets your AI assistant — ChatGPT, Claude, Le Chat and any MCP client — compute a real propeller, with a free 1-day discovery pass.
Similar models
Water-ski boat propeller 14 × 9 in, 3 blades (B3-65 series)
Model designed and computed with the Heliciel software. Design point: 5387 rpm at 16.11 m/s (58 km/h), J = 0.505, sea water. Exact geometry of the Wageningen B3-65 B-series at catalogue size: 14 × 9 in (356 × 229 mm), P/D 0.64, 3 blades. The pack holds both hands of rotation (right-hand and left-hand STL). Strength not guaranteed: at the design point the blade root does not hold in NAB bronze; thickness and material are to be sized for a real propeller.
- Diameter
- 355.6 mm
- Number of blades
- 3
- Catalogue size (diameter × pitch)
- 14 × 9 in
Water-ski boat propeller 14 × 13 in, 3 blades (B3-65 series)
Model designed and computed with the Heliciel software. Design point: 3511 rpm at 16.11 m/s (58 km/h), J = 0.774, sea water. Exact geometry of the Wageningen B3-65 B-series at catalogue size: 14 × 13 in (356 × 330 mm), P/D 0.93, 3 blades. The pack holds both hands of rotation (right-hand and left-hand STL). Strength not guaranteed: at the design point the blade root does not hold in NAB bronze; thickness and material are to be sized for a real propeller.
- Diameter
- 355.6 mm
- Number of blades
- 3
- Catalogue size (diameter × pitch)
- 14 × 13 in
Water-ski boat propeller 14 × 11 in, 4 blades (B4-70 series)
Model designed and computed with the Heliciel software. Design point: 4220 rpm at 16.11 m/s (58 km/h), J = 0.644, sea water. Exact geometry of the Wageningen B4-70 B-series at catalogue size: 14 × 11 in (356 × 279 mm), P/D 0.79, 4 blades. The pack holds both hands of rotation (right-hand and left-hand STL). Strength not guaranteed: at the design point the blade root does not hold in NAB bronze; thickness and material are to be sized for a real propeller.
- Diameter
- 355.6 mm
- Number of blades
- 4
- Catalogue size (diameter × pitch)
- 14 × 11 in
Water-ski boat propeller 14 × 13 in, 4 blades (B4-70 series)
Model designed and computed with the Heliciel software. Design point: 3504 rpm at 16.11 m/s (58 km/h), J = 0.776, sea water. Exact geometry of the Wageningen B4-70 B-series at catalogue size: 14 × 13 in (356 × 330 mm), P/D 0.93, 4 blades. The pack holds both hands of rotation (right-hand and left-hand STL). Strength not guaranteed: at the design point the blade root does not hold in NAB bronze; thickness and material are to be sized for a real propeller.
- Diameter
- 355.6 mm
- Number of blades
- 4
- Catalogue size (diameter × pitch)
- 14 × 13 in
Water-ski boat propeller 14 × 17 in, 4 blades (B4-70 series)
Model designed and computed with the Heliciel software. Design point: 2610 rpm at 16.11 m/s (58 km/h), J = 1.042, sea water. Exact geometry of the Wageningen B4-70 B-series at catalogue size: 14 × 17 in (356 × 432 mm), P/D 1.21, 4 blades. The pack holds both hands of rotation (right-hand and left-hand STL). Strength not guaranteed: at the design point the blade root does not hold in NAB bronze; thickness and material are to be sized for a real propeller.
- Diameter
- 355.6 mm
- Number of blades
- 4
- Catalogue size (diameter × pitch)
- 14 × 17 in
Water-ski boat propeller 14 × 19 in, 4 blades (B4-70 series)
Model designed and computed with the Heliciel software. Design point: 2292 rpm at 16.11 m/s (58 km/h), J = 1.186, sea water. Exact geometry of the Wageningen B4-70 B-series at catalogue size: 14 × 19 in (356 × 483 mm), P/D 1.36, 4 blades. The pack holds both hands of rotation (right-hand and left-hand STL). Strength not guaranteed: at the design point the blade root does not hold in NAB bronze; thickness and material are to be sized for a real propeller.
- Diameter
- 355.6 mm
- Number of blades
- 4
- Catalogue size (diameter × pitch)
- 14 × 19 in
Other categories : FPV drones · Aircraft, paramotors · Wind turbines · Tidal turbines · Kaplan turbines · Fans · Water pumps