3 ms·
Straightforward physics suggests the lift is a function of how fast you spin them. I'm sure with a fast enough spin you could get enough lift. Maybe rocket engi
by tim333 1y ago
Straightforward physics suggests the lift is a function of how fast you spin them. I'm sure with a fast enough spin you could get enough lift. Maybe rocket engines on the tips?
- chopin 1y agoThe tips need to stay subsonic. A bigger rotor must turn slower. AFAIK the tips of current wind turbines are already close to this limit.
- tim333 1y agoStill subsonic speeds can produce a lot of lift. I mean jet aircraft weighing 200 tons lift off at about 160 mph. But googling wing tip thrust, jet engines are probably more practical than rockets.