"I agree that the batteries has to improve, and i am sure they going to, in the future.
About the MTBF of fuel sell, hope someone from energyor will answer it.
I will email them."
https://youtu.be/7rpxcCoycvAThis is an electric Quadcopter powered buy fuel cell technology innovated by The Canadian "Energyor".It got an amazing power density, pay attention to the water dropping from the Quadcopter, this is it by product and…
"Hi Peter.
The counter clockwise props has to tilt to the clockwise direction (radius of the yaw axis of the your VTOL), and the clockwise props to the ccw direction
Hope that it helps, if not let me know"
"Hi Peter
Nice VTOL, Hard to see how it works though. it doesnt look like a tail seater
Its look like the you doing motor tilt, dont you?
Btw look at this