BoltActionGearbox t1_j69d7kp wrote on January 28, 2023 at 6:10 PM Reply to Toroidal propellers: A noise-killing game changer in air and water by Ok_Champion6840 The return of Da Vinci's air screw Permalink 1
BoltActionGearbox t1_j211ku9 wrote on December 28, 2022 at 9:54 PM Reply to ah yes, (country) my favorite place to visit. by D-raild I know a guy who lives there. John Smith, esteemed doer of (job) at (place). Permalink 2
BoltActionGearbox t1_j69d7kp wrote
Reply to Toroidal propellers: A noise-killing game changer in air and water by Ok_Champion6840
The return of Da Vinci's air screw