FPV drones · 15-inch heavy-lift drones
heavy multirotor drone propeller 15 in, 4 blades
Model designed and computed with the Heliciel software. Design point: 4,500 rpm in hover, 50 % throttle on a T-Motor MN4014 400 KV motor on 6S with a 15x5 propeller.
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 | 381 mm |
|---|---|
| Number of blades | 4 |
| Hub diameter | 57.2 mm |
| Pitch at 0.7 R | 222 mm (8.8 in) |
| Design speed | 4500 rpm |
| Fluid speed at design point | 0 m/s |
| Thrust | 29.44 N |
| Torque | 0.777 N·m |
| Shaft power | 366 W |
| Blade shape | classic |
| Angles of attack | smoothed (4° along the whole blade) |
| Bore | 6 mm |
| Hub length | 36 mm |
| Blade thickness | 4.8 mm at the root, 5.2 mm at mid-radius (r = 93.4 mm), 1.2 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-381-4p |
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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