Originally Posted by olandese_volante
(SLF again, slightly drunk at this time of day)
I don't know about the NASA prototype, but I have the nagging feeling this is a solved problem.
An Echo-class aircraft probably can carry the mass of the Tesla power train. I have no exact numbers, but I guess 400kg just batteries and associated electronics. An echo-class GA aircraft usually has an engine in the 150-200 hp range, quite a bit less than the Tesla. I've been told the Tesla can cruise at high power (German Autobahn) for nearly an hour. *thinks* latest battery version @100kWh should deliver nearly 75% power to an Echo-Class aircraft for an hour...
Now, imagine an aircraft as efficient as the SEA Risen (ok, as LSA, it won't nearly carry that battery pack)... maybe the Pipistrel Panthera... (
Pipistrel Panthera - Plane & Pilot Magazine)... it should work.
I don't claim we have electric flight yet, but we're friggin' close...