Experimental 3-inch bidirectional propeller for drone
Experimental 3-inch propeller developed as part of an academic project on a drone capable of rolling inside a cage. It uses toroidal-shaped blades and a symmetrical profile to study thrust in both directions. The source includes comparisons and test graphs, but those results do not certify a copy manufactured with another printer, material, or process. Preparation, compatibility, and printing The author describes 0.12 mm layers, supports, and an adhesion edge when printing several units. It expressly warns of the risk of breakage at high revolutions; its published limit should not be interpreted as a guaranteed safe speed. It is not a commercial replacement of universal application. Before attempting any test, consult the documentation and original graphs and use an appropriate protected test bench.
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