snowflake [none/use name] to Worldbuilding • 21 days agoHow could a noiseless flying machine be built in the far future? (Or one with a pleasing hum instead of sounding like a drone or helicopter?)external-linkmessage-square11 fedilinkarrow-up111
arrow-up111external-linkHow could a noiseless flying machine be built in the far future? (Or one with a pleasing hum instead of sounding like a drone or helicopter?)snowflake [none/use name] to Worldbuilding • 21 days agomessage-square11 Commentsfedilink
minus-squarebuckykat [none/use name]hexbear4·21 days ago Ornithopters Extremely clever active noise cancellation Extremely clever blade/wing design link
Ornithopters
Extremely clever active noise cancellation
Extremely clever blade/wing design