B-21 Raider Successfully Executes Close-Proximity Flight With KC-135 Tanker, US Air Force Reports

Key Takeaways

The U.S. Air Force’s B-21 Raider conducted a close-proximity flight test with a KC-135 Stratotanker to validate its operational capabilities.
The test, lasting around 5.5 hours over the Mojave Desert, is part of the aircraft’s ongoing rigorous testing campaign.
Initial B-21s are expected to arrive at Ellsworth Air Force Base in 2027, with operational capability anticipated in the late 2020s.

B-21 Raider Test Flights Progressing at Edwards Air Force Base

The U.S. Air Force has confirmed the successful completion of a close-proximity flight test involving the B-21 Raider and a KC-135 Stratotanker. This significant event took place over the Mojave Desert near Edwards Air Force Base, California, and lasted approximately 5.5 hours. Aviation photographers captured images of the test, indicating the stealth bomber’s positioning behind the tanker, which hints at potential refueling preparations.

Although the Air Force did not specifically mention aerial refueling or fuel transfer during this flight, the close-proximity event marks an essential milestone for the B-21 as it continues its development as a long-range, penetrating strike bomber. The flight is part of an extensive testing campaign aimed at validating the B-21’s capabilities and ensuring its readiness for operational duties. An Air Force spokesperson emphasized the importance of this test but declined to provide detailed insights into specific test points to maintain enhanced security.

Aerial refueling is vital for the B-21 Raider, as it significantly extends the aircraft’s endurance in contested environments, allowing for operations without reliance on forward bases. The ongoing flight tests at Edwards build on previous milestones, including the delivery of a second B-21 aircraft to the base in September 2025. This addition enables further testing focused on mission systems and weapon integration.

Looking ahead, the Air Force remains committed to the B-21 program, with plans for the first operational units to arrive at Ellsworth Air Force Base in 2027. This timeline is crucial as it supports the U.S. Air Force’s aim to achieve initial operational capability for the aircraft in the late 2020s. The B-21 Raider is designed to deliver a survivable and effective long-range strike capability, further enhancing the nation’s defense strategy.

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