Kaplan turbines · 4 m head · 3 blades
Kaplan turbine runner 750 mm, 3 blades (4 m head)
Model designed and computed with the Heliciel software. Design point: 4 m net head, 2.938 m³/s flow, 495.2 rpm (hydraulic power 115 kW). Specific speed from the turbine selection chart (Ns 995 at 4 m head), diameter and hub from the Kaplan statistics; runner balanced on the head by Heliciel's hydro turbine study.
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 | 750 mm |
|---|---|
| Number of blades | 3 |
| Hub diameter | 285 mm |
| Net head | 4 m |
| Flow | 2.938 m³/s |
| Specific speed Ns (turbine selection chart) | 995 |
| Head taken by the runner | 2.96 m |
| Losses in wicket gate, bend and draft tube | 1.04 m |
| Wicket gate | 10 guide vanes, b0 525 mm |
| Design speed | 495 rpm |
| Fluid speed at design point | 7.77 m/s |
| Axial load | 10407.91 N |
| Torque | 1611.781 N·m |
| Shaft power | 83549 W |
| Power coefficient Cp | 0.92 |
| Blade shape | classic |
| Angles of attack | smoothed (6° along the whole blade) |
| Bore | 57 mm |
| Hub length | 251 mm |
| Blade thickness | 7.0 mm at the root, 9.2 mm at mid-radius (r = 189 mm), 18.3 mm at the tip |
| Strength at design point | blade root fillet to be sized for strength |
| Direction of rotation | right-hand |
| Files included | STL, STEP, HLC |
| Reference | K-750-3p-H4 |
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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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