12" multirotor propeller tests
Recently, I tested some 12" propellers as I want to make a 12" hexrotor (nothing special, existing 3rd party frame). There are some different opinions about these propellers, but I was missing a direct comparison. I tested 3S (12 Volts) and 4S (16 Volts) and measured the thrust and the current on a test stand, simulating hovering flight. I used a RCtimer HP2814(3536)-710KV motor and an AfroESC 20A slim speed controller. Here are the props I tested: The propellers under test: APC Multi Rotor 12x4.4" ; Xoar Electric precision 12x4" ; Maxxprod EPP 12x4.5" ; Aeronaut CAM Carbon light 12x5" ; Graupner E PROP 12x6" The results clearly show that the popular Graupner E PROP isn't really the first choice for hovering. It requires about 13% more power than the Aeronaut prop for the same amount of thrust during hovering flight. I think the chord length is too small close to the tip (I know that high aspect ratio wings have less induced drag, but her