Businessweek: hybrid drones
Michael BelfioreA gasoline engine on board charges the batteries that run the rotors, giving the drones 2 hours or more of flight time versus the 15-30 minutes more typical of electric-only drones
A gasoline engine on board charges the batteries that run the rotors, giving the drones 2 hours or more of flight time versus the 15-30 minutes more typical of electric-only drones
