For a decade, the US Defense Advanced Research Projects Agency has lavished the Boeing A160 Hummingbird unmanned helicopter with unusual patience. Even when the US Army backed out of a commitment to ...

Engineers at Stanford University in California found that Anna's Hummingbird (pictured) is more efficient than the best micro helicopter Think the ratio of the bird's wings make it so efficient - and ...

June 19, 2007 The A160T Hummingbird unmanned rotorcraft successfully completed its first flight last Friday. The turbine-powered version of Boeing’s piston-powered A160 helicopter offers some unique ...

The U.S. Army is using a hybrid-type acquisition approach to develop a helicopter-like, Vertical-Take-Off-and-Landing Unmanned Aerial System with a so-called ARGUS wide-area surveillance sensor suite ...