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A noise-cancelling game changer

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The toroidal propeller's unique, closed-form design makes it a significantly quieter alternative to common multirotor propellers on commercial uncrewed aerial vehicles.

Turning a ring wing into a propeller reduces noise in the 1-5 kHz range and creates a much less intrusive sound reminiscent of a breeze rather than a high pitch drone propeller. At the same time, propulsion stays at the known levels.

https://www.ll.mit.edu/sites/default/files/other/doc/2022-09/TVO_Technology_Highlight_41_Toroidal_Propeller.pdf



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