FPV drones · 3-inch cinewhoop
cinewhoop drone propeller 3 in, 5 blades (rounded tips and 20° skew)
Model designed and computed with the Heliciel software. Design point: 19,767 rpm in hover, 50 % throttle on a 1404 3800 KV motor on 4S. Rounded tips and 20° skew.
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 | 76 mm |
|---|---|
| Number of blades | 5 |
| Hub diameter | 8 mm |
| Pitch at 0.7 R | 54 mm (2.1 in) |
| Design speed | 19767 rpm |
| Fluid speed at design point | 0 m/s |
| Thrust | 1.13 N |
| Torque | 0.007 N·m |
| Shaft power | 15 W |
| Blade shape | rounded tips, skew 20° |
| Angles of attack | smoothed (5° along the whole blade) |
| Blade root | junction shank 6.0 × 3.2 mm |
| Bore | 1.5 mm |
| Hub length | 8 mm |
| 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-076-5p-RS |
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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