The Air Force announced this morning that it had successfully tested weapons deployment from the B-21 Raider—the final hurdle for the sixth-generation aircraft before its entry into service.

A B-21 Raider test aircraft operating at Edwards Air Force Base, California, has successfully released a conventional weapon—clearing the last hurdle before it could become an operational part of the US Air Force’s bomber arsenal.

According to an Air Force media statement, the test highlighted the Raider’s strike capability, along with its ability to “rapidly onboard new weapons and solidified its role as the future backbone of the US bomber fleet.”

“The B-21 is designed to deliver improved combat capability to the warfighter, combining reliability and maintainability to quickly integrate new weapons,” said Secretary of the Air Force Troy Meink. “This successful test demonstrates our ability to adapt rapidly and hold any target at risk if deterrence fails.”

With the latest test complete, the Air Force now has four combat-capable long-range strategic bombers: the B-1B Lancer supersonic bomber, the B-2 Spirit flying wing stealth bomber, the venerable B-52 Stratofortress conventional heavy bomber, and now the B-21.

The future backbone of the US Air Force’s bomber fleet, the Northrop Grumman-developed aircraft is now in low-rate initial production (LRIP). The first B-21 Raiders are expected to arrive at Ellsworth Air Force Base (AFB), South Dakota, next year. Current plans call for the Air Force to receive at least 100 B-21 Raiders by the end of the 2030s, when the bombers will fully replace the fleet of aging B-1B Lancer and B-2 Spirit aircraft.

The B-21 Raider will operate alongside the B-52 Stratofortress, which the Air Force is now modernizing to ensure that the aging warbirds will remain part of the bomber force through 2050. However, the B-21 Raider will increasingly serve as the Air Force’s new workhorse bomber.

About the B-21 Raider

• Year Introduced: 2023 (first flight; not yet in operational service as of 2026)
• Number Built: ~6 (test and initial production aircraft, as of 2026)
• Length: ~69 ft (21 m)
• Wingspan: ~140 ft (43 m)
• Weight:
  • Empty: Classified (estimated ~60,000–70,000 lbs)
  • Standard conditions: Classified
  • Maximum takeoff weight: Estimated ~140,000 lbs (official figure not released)
• Engines: Two Pratt & Whitney turbofan engines (exact model classified; believed to be derivatives of the F135 or a new variant)
• Top Speed: High subsonic (exact figure classified)
• Range: ~6,000 mi (9,600 km) unrefueled (officially “intercontinental”)
• Service Ceiling: Classified (estimated ~50,000 ft)
• Loadout: Internal bays only (stealth optimized); conventional or nuclear ordnance, precision-guided munitions (JDAM, JASSM, etc.), potential future hypersonic/stand-off weapons
• Aircrew: 2 (pilot + weapons systems officer; capable of uncrewed/remote operations in the future)

The United States Air Force has described the B-21 Raiders as being “the world’s first and only sixth-generation aircraft,” noting that it is able to take part in long-range, penetrating strikes against adversaries in the most challenging and contested environments.

The recent weapons release test comes just four years after the B-21 Raider was officially unveiled on December 2, 2022, during a public ceremony at the Northrop Grumman facility in Palmdale, California. A year later, on November 10, 2023, the B-21 Raider took its maiden flight at Edwards AFB. 

The B-21 Weapons Test Put Thousands of Hours of Simulation into Reality

Although designed to deliver a weapon on target, this month’s test was no small feat. It was actually long in the making, with the US Air Force acknowledging that the “test was built on thousands of hours of virtual modeling within B-21’s digital twin environment.”

Northrop Grumman, the Raider’s prime contractor, created the digital twin as a high-fidelity, cloud-based software simulation and virtual model that allowed for refinement of its physical, electronic, and operational systems. Instead of relying solely on physical prototypes that could be used in wind-tunnel mock-ups and sequential trial-and-error manufacturing—which has been the standard method in aircraft development—the aerospace firm, working with the United States Air Force, tested the B-21 inside the virtual ecosystem. It served as a mathematical and physical replica mirroring the aircraft’s behavior, structural loads, stealth characteristics, and aerodynamic performance in a synthetic environment. It offered shortcuts, yet thousands of hours were still spent predicting weapon trajectories, validating open-architecture software, and then testing system updates digitally before physical execution on the runway.

Moreover, the virtual twin allowed the development team to avoid design clashes, ensure component fits, and certify code virtually. That cut software certification times significantly, but also allowed the program to avoid costly physical re-engineering and shrink the ground-support footprint needed at Ellsworth and other future hosts.

“This weapons test proves the B-21 program is excelling,” said Air Force Chief of Staff Gen. Ken Wilsbach. “We are building an impressive fleet that will give our joint force credible, penetrating strike options for decades to come.”

About the Author: Peter Suciu

Peter Suciu regularly writes about military hardware, firearms history, cybersecurity, politics, and international affairs. He has contributed to dozens of newspapers, magazines, and websites over a 30-year career in journalism, including Forbes and Clearance Jobs. He is based in Michigan. You can follow him on Twitter: @PeterSuciu. You can email the author at Editor@nationalinterest.org.

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