snowflake [none/use name]@hexbear.net to Worldbuilding@hexbear.netEnglish · 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?)www.youtube.comexternal-linkmessage-square11fedilinkarrow-up111arrow-down10
arrow-up111arrow-down1external-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?)www.youtube.comsnowflake [none/use name]@hexbear.net to Worldbuilding@hexbear.netEnglish · 21 days agomessage-square11fedilink
minus-squarebuckykat [none/use name]@hexbear.netlinkfedilinkEnglisharrow-up4·21 days ago Ornithopters Extremely clever active noise cancellation Extremely clever blade/wing design
Ornithopters
Extremely clever active noise cancellation
Extremely clever blade/wing design