[gordner]

losing a flight control on any aircraft is not good news so if a prop falls off I doubt it is great, but I have seen some pretty cool videos of how adaptive a quadcopter can be to a blade loss, I would bet this thing could suffer a blade loss or two and compensate. However, no way does it do more than a minute or two of flight with a payload, it cannot possibly have enough energy storage for extended flight.

To clarify, it cannot auto rotate as the props are fixed. A real helicopter adds or removes lift by changing the rotor pitch (angle of attack to the relative wind). This one use RPM to govern lift generated with fixed pitch propellors. Auto rotation works by manipulating pitch to maintain unpowered rotor RPM in descent and then taking advantage of that stored rotor energy to produce a momentary burst of lift when the pitch is increased.