DARPA Nano Air Vehicle (NAV) program

In 2005, DARPA announced the Nano Air Vehicle (NAV) program and its goal
to develop agile and flyers system that could fit in one hand. This
video chronicles the development of a "hummingbird" flyer by
Aerovironment from concept to prototype demonstration and introduction
to the public. A number of difficult design and engineering challenges
were overcome in the course of the program, particularly in the wing
structure, propulsion and control actuators. Numerous complete
prototypes were built and tested to assess and improve the performance
of the systems shown in the video. The final prototype achieves the
noteworthy milestone of 2-wing flapping hovering and fast forward flight
with all power sources on the aircraft and all controls implemented
through modulation of the wing strokes in a shape that resembles a real
hummingbird and carries and on-board camera that relays video to the
pilot in real time. For more information, please visit www.darpa.mil/Our_Work/DSO/Programs/Nano_Air_Vehicle_%28NAV%