Originally Posted by
Mechta
Imposing a requirement (autorotation) from one type of aircraft (helicopter) onto another type (multirotor) seems a negative step. What is required is the same or better level of reliability and survivability. If a multirotor can achieve this with two or more distinctly separate power and control systems, why should it be saddled with the weight, complexity and additional possible failure modes of an autorotation system?
Because people fly aircraft to the point of energy exhaustion and errors/mistakes are made in the energy loading/consumption process. Should we have passenger fixed wing aircraft that can't glide? Call me old fashioned, but running out of stored electrical or chemical energy in the air shouldn't result in everyone plummeting to their deaths. A survivable controlled emergency landing from a stored energy starved flight state isn't a bad requirement.