Test results of the different boat propeller designs. (Credit: rctestflight) Interestingly, the 2-blade FDM-printed propeller ended up performing the best, while the bi-blade design (with two sets ...

Fan blades and propellers are used to convey power from a source (such as a jet engine) for propulsion or the movement of air. Propellers are an array of fan blades that transmit power by converting ...

an old propeller blade, once attached to a military plane that crashed during World War II. The blade was buried in the ...