FPV drones · 31 mm tinywhoop
tinywhoop drone propeller 31 mm, 3 blades
Model designed and computed with the Heliciel software. Design point: 38,320 rpm in hover (0802 19,000 KV motor on 1S).
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. It also contains the same propeller turning the other way (STL and STEP).
Characteristics computed by Heliciel
| Diameter | 31 mm |
|---|---|
| Number of blades | 3 |
| Hub diameter | 4 mm |
| Pitch at 0.7 R | 15 mm (0.6 in) |
| Design speed | 38320 rpm |
| Fluid speed at design point | 0 m/s |
| Thrust | 0.04 N |
| Torque | 0.000 N·m |
| Shaft power | 0.49 W |
| Blade shape | classic |
| Angles of attack | smoothed (5° along the whole blade) |
| Bore | 1 mm |
| Hub length | 3 mm |
| Blade thickness | 0.4 mm at the root, 0.4 mm at mid-radius (r = 7.4 mm), 0.1 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 | B-031-3p |
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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tinywhoop drone propeller 31 mm, 4 blades (20° skew)
Model designed and computed with the Heliciel software. Design point: 38,320 rpm in hover (0802 19,000 KV motor on 1S). 20° skew: shape sought for noise (not measured).
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