AeroVironment, the California-based company behind the largest, highest and longest flying unmanned aircraft system, the Global Observer, has now achieved a remarkable technical milestone with a much smaller aircraft. With its “Nano Hummingbird” the company has for the first time achieved controlled precision hovering and fast-forward flight of a two-wing, flapping wing aircraft that carries its own energy source and relies only on its flapping wings for propulsion and control.

The hand-made final concept demonstrator Nano Hummingbird has a wingspan of 16 cm (6.5 in) and weighs just 19 g (2/3 oz), which is less than the weight of a AA battery. Into this tiny and lightweight package the AeroVironment UAS team has managed to cram all the systems required for flight, including batteries, motors, communications systems and even a video camera.

The aircraft can climb and descend vertically, fly sideways left and right, fly forward and backward, as well as rotating clockwise and counter-clockwise – all under remote control and while carrying a video camera payload. It is even capable of doing a 360-degree loop.

The Nano Hummingbird can be fitted with a removable body fairing, which is shaped to have the appearance of a real hummingbird and, although it is larger and heavier than an average hummingbird, the aircraft is actually smaller and lighter than the largest hummingbird found in nature.

Development bucks came from taxpayers via DARPA. Maybe the rest of us will get to play with it after the spooks are through using it as a mini-spyplane.