Fans · PC fans
PC fan impeller 140 mm, 7 blades
Model designed and computed with the Heliciel software. Design point: 140.2 m³/h at 1,500 rpm, free air (140 mm fan). 7 sickle-shaped blades in a 140 mm frame: the standard PC fan format.
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 | 140 mm |
|---|---|
| Number of blades | 7 |
| Hub diameter | 44.8 mm |
| Pitch at 0.7 R | 152 mm (6.0 in) |
| Design speed | 1500 rpm |
| Fluid speed at design point | 2.82 m/s |
| Torque | 0.003 N·m |
| Shaft power | 0.42 W |
| Flow at design point | 140.2 m³/h |
| Pressure rise | 7 Pa |
| Installation | inside a ring (frame or nozzle) |
| Blade shape | skew 30° |
| Angles of attack | smoothed (5° along the whole blade) |
| Bore | 9 mm |
| Hub length | 21 mm |
| Blade thickness | 1.8 mm at the root, 2.2 mm at mid-radius (r = 31.9 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 | VT-140-7p-PC |
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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