S4095 E-flite UMX ASK-21 Airfoil Micro Drone Propeller (41.27g thrust @3V)

thingiverse

I designed this micro drone propeller with the **S4095 E-flite UMX ASK-21** airfoil. Testing was performed on the **[Drone Propeller Thrust Testing Jig](http://www.thingiverse.com/thing:2302071)** (test results below). I printed this part with a slow setting, using a **[0.2mm extruder nozzle](http://amzn.to/2qQdFvg)** at 0.04mm layer height. The final part was thoroughly cleaned and deburred using a **[Precision Knife](http://amzn.to/2pV1sGA)**. Next, I finished the part with a piece of **[500 grit sandpaper](http://amzn.to/2pTNwic)**. Here are the readings for the 4 chosen voltage values (also visible in the pictures taken): - **1.5V** results in **11.51 grams** - **2V** results in **21.87 grams** - **2.5V** results in **31.45 grams** - **3V** results in **41.27 grams** The included files consist of all shots taken during the test, with 6 text files that have all the airfoil coordinates used in the build, the printable STL files and finally the SLDPRT files. If you want to have some fun with the propeller, make sure you get a bunch of **[8520 coreless motors](http://amzn.to/2qPUhi4)**. Use the SLDPRT files, just in case you desire to make your own changes to the drone propeller. **Note:** The airfoil was plotted using the matplotlib library for python.