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PRNewswire/ — For the first time in history, the U.S. Navy and Boeing [NYSE: BA] have demonstrated air-to-air refueling using an unmanned aircraft – the Boeing-owned MQ-25™ T1 test asset – to refuel another aircraft.

During a test flight on June 4, MQ-25 T1 successfully extended the hose and drogue from its U.S. Navy-issued aerial refueling store (ARS) and safely transferred jet fuel to a U.S. Navy F/A-18 Super Hornet, demonstrating the MQ-25 Stingray’s ability to carry out its primary aerial refueling mission.

During the initial part of the flight, the F/A-18 test pilot flew in close formation behind MQ-25 to ensure performance and stability prior to refueling – a maneuver that required as little as 20 feet of separation between the MQ-25 T1 air vehicle and the F/A-18 refueling probe. Both aircraft were flying at operationally relevant speeds and altitudes. With the evaluation safely completed, the MQ-25 drogue was extended, and the F/A-18 pilot moved in to “plug” with the unmanned aircraft and receive the scheduled fuel offload.

The milestone comes after 25 T1 flights, testing both aircraft and ARS aerodynamics across the flight envelope, as well as extensive simulations of aerial refueling using MQ-25 digital models. MQ-25 T1 will continue flight testing prior to being shipped to Norfolk, Virginia, for deck handling trials aboard a U.S. Navy carrier later this year.

The Boeing-owned T1 test asset is a predecessor to the seven test aircraft Boeing is manufacturing under a 2018 contract award. The MQ-25 will assume the tanking role currently performed by F/A-18s, allowing for better use of the combat strike fighters and helping extend the range of the carrier air wing.

The new capability for Airbus’ C295 to serve as an aerial tanker brings additional flexibility for this tactical airlifter, further increasing its already-proven versatility and opening additional mission opportunities.

Airbus Defence and Space developed a removable air-to-air refuelling (AAR) kit for the twin-engine aircraft that utilises a 100-ft.-long deployable hose with a “basket” at the end – enabling the transfer of fuel to receiver aircraft equipped with a probe. A remote vision system allows crewmembers aboard the C295 tanker to monitor refuelling operations from the cargo cabin.

Recent flights to test the kit involved an Airbus-owned C295 that refuelled a C295 from the Spanish Air Force, as well as proximity tests with the C295 and a fast fighter aircraft – a Spanish Air Force F-18.

“Customers are increasingly interested in purchasing not just an aircraft, but a versatile platform that can be used for different missions,” explained Martín Espinosa, the Airbus Defence and Space engineering technical manager responsible for the C295’s aerial refuelling test campaign. “The development of the air-to-air refuelling capabilities of the C295 forms part of this strategic vision.”

The C295’s aerial refuelling capability would be a highly valuable mission-extender for customers using C295s. These customers include the armed forces of current and future C295 operators responsible for civil and military search and rescue missions.

Additionally, it could serve as a cost-effective platform to train fighter pilots in the skills needed for air-to-air refuelling. “The C295 tanker kit could facilitate training of fighter pilots for missions involving refuelling, or even for AAR services on a lease-by-the-hour basis at a fraction of the cost of heavier aircraft,” explained Luis Díaz-Miguel, the Tactical Airlifters Marketing Manager.

Captain Gabiña, a Spanish Air Force pilot involved in the aerial refuelling tests, gave high marks to the C295 in its new role as tanker. “The degree of difficulty in flight test is always high since it involves performing manoeuvers that no one has done before. It should be noted that due to the positive behaviour of the aircraft, the operation has been good and straightforward,” he said.

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Navy and Boeing Complete First Unmanned Aircraft to Aircraft Refueling

Air-to-Air Refueling Broadens C295 Tactical Airlifter’s Operational Versatility

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