US Navy and Boeing Conduct First MQ-25TM T1 Stingray Refueling Mission with F-35C
US Navy and Boeing Conduct First MQ-25TM T1 Stingray Refueling Mission with F-35C

US Navy and Boeing Conduct First MQ-25TM T1 Stingray Refueling Mission with F-35C

The U.S. Navy and Boeing have used the MQ-25TM T1 test asset to refuel a U.S. Navy F-35C Lightning II fighter jet for the first time, once again demonstrating the aircraft’s ability to achieve its primary aerial refueling mission. This was the third refueling mission for the Boeing-owned test asset in just over three months, advancing the test program for the Navy’s first operational carrier-based unmanned aircraft. T1 refueled an F/A-18 Super Hornet in June and an E-2D Hawkeye in August. During a test flight Sept. 13, an F-35C test pilot from the Navy’s Air Test and Evaluation Squadron Two Three (VX-23) conducted a successful wake survey behind T1 to ensure performance and stability before making contact with T1’s aerial refueling drogue and receiving fuel.

“This flight was yet another physical demonstration of the maturity and stability of the MQ-25 aircraft design. Thanks to this latest mission in our accelerated test program, we are confident the MQ-25 aircraft we are building right now will meet the Navy’s primary requirement – delivering fuel safely to the carrier air wing,” said Dave Bujold, Boeing’s MQ-25 program director.

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“Every test flight with another Type/Model/Series aircraft gets us one step closer to rapidly delivering a fully mission-capable MQ-25 to the fleet. Stingray’s unmatched refueling capability is going to increase the Navy’s power projection and provide operational flexibility to the Carrier Strike Group commanders,” said Capt. Chad Reed, the Navy’s Unmanned Carrier Aviation program manager.

US Navy and Boeing Conduct First MQ-25TM T1 Stingray Refueling Mission with F-35C
Boeing’s MQ-25 T1 test asset transfers fuel to a U.S. Navy F-35C Lightning II fighter jet Sept. 13 during a flight-test mission. The Navy and Boeing have conducted three refueling flights in the past three months, including an F/A-18 Super Hornet and E-2D Hawkeye. (Photo by Kevin Flynn/Boeing)

The T1 flight test program began in September 2019 with the aircraft’s first flight. In the following two years, the test program completed more than 120 flight hours – gathering data on everything from aircraft performance to propulsion dynamics to structural loads and flutter testing for strength and stability. MQ-25 is benefitting from the two years of early flight test data, which has been integrated back into its digital models to strengthen the digital thread connecting aircraft design to production to test to operations and sustainment. Boeing is currently manufacturing the first two MQ-25 test aircraft. T1 will be used to conduct a deck handling demonstration aboard a U.S. Navy carrier in the coming months to help advance the carrier integration progress.

The Boeing MQ-25 Stingray is an aerial refueling drone that resulted from the Carrier-Based Aerial-Refueling System (CBARS) program, which grew out of the earlier Unmanned Carrier-Launched Airborne Surveillance and Strike (UCLASS) program. The MQ-25 first flew on 19 September 2019. Boeing’s MQ-25 design is powered by one Rolls-Royce AE 3007N turbofan engine delivering 10,000 lbf (44 kN) of thrust; this is a variant of the engine used to power the Navy’s MQ-4C Triton. The aircraft is less stealthy than flying wing UAVs. It does feature a stealthy fuselage shaping, flush inlet to shield engine blades from radar and V-tail. As of 2020 the United States Navy plans to establish Unmanned Carrier Launched Multi-Role Squadron 10 (VUQ-10) in October 2021 with “four Engineering and Manufacturing examples of the MQ-25A”.

US Navy and Boeing Conduct First MQ-25TM T1 Stingray Refueling Mission with F-35C
Boeing’s MQ-25 T1 test asset transfers fuel to a U.S. Navy F-35C Lightning II fighter jet Sept. 13 during a flight-test mission. The Navy and Boeing have conducted three refueling flights in the past three months, including an F/A-18 Super Hornet and E-2D Hawkeye. (Photo by Kevin Flynn/Boeing)
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