Here's an innovative aircraft you won't mind clogging up the skies
— By Tyler Falk on December 10, 2013, 1:54 PM PST
"but it's propelled by 18 electric rotors, making it emissions free. "
Did you seriously write that: electricity = Emissions free. Where do you think electricity comes from ??
I'm sure they considered having all propeller tips within the outermost support ring, but for no doubt excellent reasons, went with this design. Advances in carbon fiber assembly, being pioneered in the auto industry, may eliminate much of the tedious hand assembly shown.
Finally, did I miss anything important in the video? I don't speak German :-).
@Hal_9001 Try clicking the "English" button that pops up in the top left corner of the video when you first hit play. Hope this helps!
Looks like there was a sale on fans. Considering that each motor represents an efficiency loss of between 10-30% in mechanical energy loss per motor of fossil fuel generation energy (about 85% US and 60% in Europe) used to charge its batteries - it's less than environmentally impressive. These electric motor inefficiencies create even higher indirect emissions from fossil fuel generation than just straight petrol engines - until 100% solar or wind is available. Further efficiency losses come from the lack of thrust rings around the propellers, or any control of propeller tip air slippage. Additionally, since it has no passive lift surfaces as part of the design, and is dependent solely on vertical motorized propeller lift at all time, even in a decent, it is even less energy efficient while flying than it could be as a VTOL winged helicopter. Not really that impressive.
And Germany burns more coal now because their foolish anti-nuke politics has led them to thumb their noses at emissions targets.
Wonder what insurance companies will charge for folks clogging up the cities with these, offering collisons in 3D instead oif just 2D?
This was a dumb idea in the '50s.