Drone refuel test 'successful'

Two unmanned drones were able to fly close enough together for an automated refuel to take place, in tests carried out by the Defense Advanced Research Projects Agency (Darpa).
The two planes flew closely at an altitude of 48,000ft (14,630m) for “the majority” of a 2.5 hour flight, the US agency said.

The fuel probe could only be 100ft (30m) at most from the fuel receiver.

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Source: BBC News | News Front Page | UK Edition

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