Management of promising developments USA (DARPA) Graduated test autonomous aerial refueling drone Northrop Grumman RQ-4 Global Hawk. About this report Flightglobal.
According to the publication, in a series of nine tests used two UAVs. With all of this apparatus are connected together to pump fuel — they dock successfully tested on the ground. Yet, experts at DARPA estimate that the filling would have passed successfully in 3 of 5 attempts. Such an error in the DARPA explain the low maneuverability UAVs at an altitude of 13.4 kilometers.
As the Flightglobal, to refuel unmanned aircraft in the air used standard sleeve. But unlike manned aircraft, unmanned tanker is filled to lower UAV. Use aerial refueling UAVs in practice it is not planned.
In step preparation for the tests UAV spetsy DARPA worked on fighter aerial refueling F/A-18 Hornet. In the upcoming scheduled refueling test on the experimental X-47 bespilotnike company Northrop Grumman.
Previously, it was also reported plans to test a new aerial refueling drone on Phantom Eye hydrogen-fuel production Boeing.