Tidal/river turbine rotor 300 mm, 9 blades (slow, high torque)
Model designed and computed with the Heliciel software. Design point: 2 m/s current, 255 rpm (tip speed ratio 2). Nine blades: high torque at low speed.
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 | 300 mm |
|---|---|
| Number of blades | 9 |
| Hub diameter | 51 mm |
| Design speed | 255 rpm |
| Fluid speed at design point | 2 m/s |
| Axial load | 123.13 N |
| Torque | 4.394 N·m |
| Shaft power | 117 W |
| Power coefficient Cp | 0.42 |
| Tip speed ratio (TSR) | 2.0 |
| Blade shape | classic |
| Angles of attack | smoothed (13° along the whole blade) |
| Bore | 8 mm |
| Hub length | 55 mm |
| Blade thickness | 8.4 mm at the root, 5.6 mm at mid-radius (r = 75.3 mm), 1.7 mm at the tip |
| Material used in the computation | 3D-printing PETG |
| Strength at design point | yes |
| Direction of rotation | right-hand |
| Files included | STL, STEP, HLC |
| Reference | T-300-9p |
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.
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