FPV drones · 15-inch heavy-lift drones
heavy multirotor drone propeller 15 in, 2 blades (serrated trailing edge)
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. Serrated trailing edge: the stated performance is that of the smooth blade (serrations are not computed); pack without STEP file.
The pack contains the complete propeller as a full-definition STL with root fillet, the Heliciel .hlc project and the computation records. It also contains the same propeller turning the other way (STL and STEP). Serrated trailing edge: geometry only, no STEP; the stated performance and strength are computed on the smooth blade.
Characteristics computed by Heliciel
| Diameter | 381 mm |
|---|---|
| Number of blades | 2 |
| Hub diameter | 57.2 mm |
| Pitch at 0.7 R | 175 mm (6.9 in) |
| Design speed | 4500 rpm |
| Fluid speed at design point | 0 m/s |
| Thrust | 15.19 N |
| Torque | 0.298 N·m |
| Shaft power | 141 W |
| Blade shape | serrated trailing edge (2 tip elements, 4 teeth per element, 20 % of chord peak to peak ; geometry only) |
| Angles of attack | smoothed (4° along the whole blade) |
| Bore | 6 mm |
| Hub length | 29 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, HLC |
| Reference | B-381-2p-Z |
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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Model designed and computed with the Heliciel software. Design point: 4,500 rpm in hover, about 50 % throttle on a T-Motor MN4014 400KV motor on 6S.
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