The AEG helicopter was an unusual German aircraft project intended to create a portable observation post in the form of a tethered helicopter. It achieved lift by use of two contra-rotating rotors powered by an electric motor that was supplied with power from the ground. The device could be folded for transportation on the back of a truck. An observer's cabin was suspended underneath the rotor assembly and could be blown clear by an explosive charge in case of emergency.
Made by AEG.