DARPA Hummingbird pushes forward speed to 112 knots
The Defense Advanced Research Projects Agency's (DARPA) A160 Hummingbird unmanned aerial vehicle (UAV) reached 112 knots forward airspeed in a June 25 flight in Victorville, Calif. The 94-minute flight was the 11th for the UAV since it adopted a four-blade rotor system to increase lift over the...
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