As boring as propeller ... and the toroidal design too, which would explain some of the performance loss. Going back between the CAD model and the design in the patent by Sharrow Marine didn ...

particularly in the marine space, that they could mark a profound leap forward. MIT's super-quiet, 3D-printed toroidal propellers fitted to a commercial drone for testing One key issue with ...

Also, in this paper, an experimental validation study for the above-mentioned propellers is performed using a 3D-printed toroidal Propeller and a market ... Later, building on this concept many ...

MIT recently announced its research on toroidal propellers to create quieter drones ... but there were no available 3D models. [Major] did a design and 3D printed the blades.

New Atlas' Loz Blain did an excellent job diving into the newly energized world of looped air and sea propellers in a primer just over a year ago. In looking at Sharrow Marine's design ...

Their patent claims the invention is more efficient than traditional propellers and is less noisy. Coincidentally, already in 2012, US engineering company Sharrow Marine also developed a toroidal ...