Good questions, even better question would be how did we figure out quantum theory etc but couldn't figure that twice the vertical lift from 2 rotors is more than lift single rotor? How's this something credited to Uber? Dunno.
Tandem rotors have been around for almost a century.
What they're doing here is stacking rotors on top of each other, not for lift, but apparently because it's quieter and allows for 'better performance' .. whatever that means.
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Good questions, even better question would be how did we figure out quantum theory etc but couldn't figure that twice the vertical lift from 2 rotors is more than lift single rotor? How's this something credited to Uber? Dunno.
Tandem rotors have been around for almost a century.
What they're doing here is stacking rotors on top of each other, not for lift, but apparently because it's quieter and allows for 'better performance' .. whatever that means.