HAM-STD HS1-620 Airfoil Micro Drone Propeller (31.01g thrust @3V)

thingiverse

I'm experimenting with a new propulsion system at 1.5V and it's barely generating any thrust. I've left it running for a while, thinking something must be wrong, but it just hangs around 0.72-0.75 grams... Very strange. The propeller was designed using the HAM-STD HS1-620 airfoil. All testing was done on the Micro Drone Propeller Thrust Tester (test results are below). I printed the part at a slow speed with a 0.2 extruder nozzle at 0.04mm layer height. The print was then cleaned up with a Precision Knife. Next, I finished the part with a 400 grit sandpaper. Here are the measurements for a few voltage presets (you can also check these out in the images): - 1.5V => 0.72 grams - 2V => 8.11 grams - 2.5V => 21.55 grams - 3V => 31.01 grams The included files contain all the pictures taken during the test, with 6 text files that have all the airfoil coordinates used in the build, the printable STL files and the SLDPRT files. If you'd like to use the propeller, make sure you get a 8520 coreless motor. You should use the SLDPRT files if you want to make your own changes to the drone propeller. Notice: Airfoil plotted using matplotlib library in python.