Kaplan turbines · 28 m head · 7 blades
Kaplan turbine runner 500 mm, 7 blades (28 m head)
Model designed and computed with the Heliciel software. Design point: 28 m net head, 1.958 m³/s flow, 1219.7 rpm (hydraulic power 538 kW). Specific speed from the turbine selection chart (Ns 465 at 28 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 | 500 mm |
|---|---|
| Number of blades | 7 |
| Hub diameter | 292.4 mm |
| Net head | 28 m |
| Flow | 1.958 m³/s |
| Specific speed Ns (turbine selection chart) | 465 |
| Head taken by the runner | 25.44 m |
| Losses in wicket gate, bend and draft tube | 2.55 m |
| Wicket gate | 10 guide vanes, b0 350 mm |
| Design speed | 1220 rpm |
| Fluid speed at design point | 15.16 m/s |
| Axial load | 26360.64 N |
| Torque | 3727.788 N·m |
| Shaft power | 476255 W |
| Power coefficient Cp | 0.82 |
| Blade shape | classic |
| Angles of attack | smoothed (6° along the whole blade) |
| Blade root | junction shank 95.0 × 48.4 mm |
| Bore | 58 mm |
| Hub length | 164 mm |
| Blade thickness | 8.6 mm at the root, 8.6 mm at mid-radius (r = 146.2 mm), 14.8 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-500-7p-H28 |
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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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