Kaplan turbines · 25 m head · 6 blades (ESHA statistics)
Kaplan turbine runner 500 mm, 6 blades (25 m head)
Model designed and computed with the Heliciel software. Design point: 25 m net head, 1.836 m³/s flow, 1317.3 rpm (hydraulic power 450 kW). Operating point and hub from the Kaplan statistics of the ESHA guide (specific speed n_QE = 0.480 at 25 m head); runner computed by Heliciel. Runner balanced on the head by Heliciel's turbine study (wicket gate and pre-swirl included); hydraulic geometry: the blade root fillet still has to be sized for strength.
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 | 500 mm |
|---|---|
| Number of blades | 6 |
| Hub diameter | 225 mm |
| Net head | 25 m |
| Flow | 1.836 m³/s |
| Specific speed n_QE (ESHA statistics) | 0.480 |
| Head taken by the runner | 22.64 m |
| Losses in wicket gate, bend and draft tube | 2.34 m |
| Wicket gate | 10 guide vanes, b0 170 mm |
| Design speed | 1317 rpm |
| Fluid speed at design point | 11.72 m/s |
| Axial load | 29539.94 N |
| Torque | 2876.688 N·m |
| Shaft power | 396741 W |
| Power coefficient Cp | 0.84 |
| Blade shape | classic |
| Angles of attack | smoothed (6° along the whole blade) |
| Blade root | junction shank 56.7 × 31.0 mm |
| Bore | 45 mm |
| Hub length | 134 mm |
| Blade thickness | 7.0 mm at the root, 7.0 mm at mid-radius (r = 112.5 mm), 15.7 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-500-6p |
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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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