Toroidal propellers: A noise-killing game changer in air and water newatlas.com Submitted by Ok_Champion6840 t3_10mvasn on January 27, 2023 at 8:34 PM in UpliftingNews 24 comments 145
LiverOfStyx t1_j685snk wrote on January 28, 2023 at 12:32 PM If it worked they would've given us one second of sound from that propeller.. But, i can't find any examples of the sound. Which to me, makes this a scam. Permalink −1−
Viewing a single comment thread. View all comments