[elmar]

The current specifications are 15 min max theoretical flight time with one passenger, that never as been proved on real life scenario. Considering that rotorcopter regulation requires 20 min reserve time unless there is an exception the vehicle can even takeoff battery technology will have to double for a 10 min flight time with 20 min reserve one passenger.

Volocopter is a great project and on electrical VTOL is the current "state of the art" but it's very dependent on a massive battery weight to power improvement.

How I know all this, I run a startup targeting the some problem but with a very different approach.

[FabHK]

Fully agreed.

Two huge bottlenecks for PEVA (personal electric VTOL aircraft) remain, in my view:

* specific energy of the battery. I hope progress is being made there.

* regulation, as you allude to. A VTOL aircraft in VFR with fairly short total flight time could probably reasonably be allowed to fly with lower reserves. Airmen licensing is another huge area - it would be absurd to require a helicopter CPL or even ATPL for shuttling a pax around in this.