Safe, Blade-free Drone Propelled with Ultrasonic Vibrations

NTT DOCOMO, INC. announced that it has developed a blimp-style drone that is propelled safely through the air with ultrasonic vibrations, offering promising applications in homes, concert halls and other indoor spaces.
Unlike conventional drones that require propellers and sometimes wings, DOCOMO’s propellerless and wingless drone blimp simply requires helium to remain airborne. Moreover, it can travel forward, backward or up/down propelled via ultrasonic vibrations generated by several sm