Hey ATS, I came about this article which I found interesting and astonishing to say the least.
DARPA announced the award of a $33 million contract to Northrop Grumman to demonstrate aerial refueling of a NASA Global Hawk unmanned aerial vehicle
(UAV) by a sister ship. The program will be designated KQ-X. Northrop Grumman will retrofit two of the high altitude long endurance (HALE) UAVs, one
aircraft pumping fuel into the other in flight through a hose-and-drogue refueling system . The aerial refueling engagement will be completely
autonomous. "Demonstrating the refueling of one UAV by another is a historic milestone," said Carl Johnson, vice president, Advanced Concepts for
Northrop Grumman Aerospace Systems.
Link
That is a huge leap forward and will greatly enhance UAV capabilities, significantly increase their combat radius and mission times.
"It adds aerial refueling to the list of capabilities that can be accomplished autonomously by Global Hawks; it opens the door to greatly expanded
operational utility for UAVs; and, as a side benefit, it promises to increase the safety and reliability of aerial refueling between manned aircraft
by reducing pilot workload." There are several revolutionary aspects to the KQ-X program. Not only will the aerial refueling be autonomous, but
since Global Hawks are HALE UAVs, it will also take place at a much higher altitude than has been previously demonstrated with manned aircraft. It
will also be the first time that HALE UAVs have flown in formation.
Most aircraft refueling takes place around the 20,000-30,000ft range, depending on the platform. The Global Hawk can reach altitudes up to 65.000ft
(20,000m).
Yours thoughts on this technology?