Brett Adcock

You need as much as the rotor disc area, in terms of surface area, as you possibly can.

That's why the helicopter rotors are so large.

We want that to be really large.

That'll reduce power and get you off the ground.

In electric aircraft, the problem you're starting with is you have 1 30th of the energy as you do in kerosene in a battery pack.

So you're off the bat at 1 30th less range or 1 30th less energy.

And so power becomes the dominating factor of how to basically build electric aircraft.

How do you get power down as much as possible?

You really want a lot of disk area.

A lot of disk area is, well, one, it could be good for power, but it's also bad because you have, like, no redundancy in the system.

You have, like, one rotor blade.

If it doesn't go well, you go down.

With electrification, you can basically build much smaller, like, basically rotors and be able to fully electric.

And the reason you can't do that with, like, traditional kind of, like, turbo fans or engines is it gets too inefficient at these sizes.

You can't build 12 rotors.

like propellers on a helicopter.

The efficiency just drops, like, to nothing.

So with electrification, you can.

You can size down electric motors to small sizes, and they're still 90% efficient.

So, like, small electric motor on the table or a big one the size of your chair, same efficiency.