PALMDALE, California / Falls Church, Virginia — February 24, 2026 : Northrop Grumman and the United States Air Force have accelerated production capacity of the B-21 Raider strategic bomber following continued progress in ground and flight testing. The aircraft remains on schedule for its first operational delivery to Ellsworth Air Force Base in 2027.
Final assembly of the B-21 is underway at Northrop Grumman’s manufacturing facility in Palmdale, California. The production effort is supported by a nationwide industrial network that includes more than 400 suppliers across 40 U.S. states. The program involves over 8,000 industry and Air Force personnel engaged in design, manufacturing, testing and sustainment preparation.
Production Expansion Backed by $5 Billion Investment
To support the higher production rate, Northrop Grumman has invested more than $5 billion in digital engineering systems and manufacturing infrastructure dedicated to the B-21 program. The investment includes advanced software development tools, digital modeling systems and factory modernization initiatives aimed at increasing throughput and reducing long-term sustainment costs.
The company’s digital ecosystem integrates engineering, manufacturing and testing environments. Augmented reality tools are used on the production floor to allow technicians to visualize assembly tasks, identify potential fitment or integration issues before physical installation, and coordinate directly with design engineers in real time.
According to company officials, the digital framework has reduced software certification timelines by approximately 50 percent, enabling faster validation of upgrades and future technology insertions. The shared digital architecture also supports real-time validation of aircraft performance during testing phases.
Testing Progress and Operational Efficiency
Multiple B-21 aircraft are currently undergoing flight testing. Program officials report that aircraft performance in both ground and flight tests is exceeding earlier digital modeling expectations, reinforcing confidence in the platform’s design and manufacturing quality.
The Combined Test Force — a joint team composed of Northrop Grumman and Air Force personnel — has increased testing cadence as additional aircraft joined the test fleet in 2025. Maintainers are now able to service a test aircraft and prepare it for a subsequent flight within 24 hours. Concurrent ground testing is being conducted to evaluate the aircraft’s performance under extreme mission conditions and validate operational resilience.
The program’s digital environment enables coordinated flight test planning and immediate analysis of collected data, allowing faster identification of issues and implementation of design refinements.
Strategic Role and Technical Architecture
The B-21 Raider is designed as a dual-capable strategic deterrent aircraft, able to deliver both conventional and nuclear payloads. It is intended to provide the United States with long-range strike capability capable of holding targets at risk globally.
The aircraft incorporates sixth-generation stealth technologies informed by decades of operational experience with low-observable platforms. Modernized stealth manufacturing processes are designed to improve maintainability and reduce lifecycle costs compared to earlier stealth systems.
Built on an open architecture framework, the B-21 is engineered to support seamless hardware and software upgrades. This approach allows mission systems, sensors and weapons integration to evolve in response to emerging threats without requiring extensive structural redesign.
Beyond its role as a bomber, the B-21 is designed to function as a node within a broader “family of systems.” The aircraft will integrate data, sensors and weapons networks to provide enhanced situational awareness and precision strike coordination across joint and allied forces.
In an industry-first data-sharing arrangement, Northrop Grumman and the Air Force share access to the B-21’s digital twin — a comprehensive digital representation of the aircraft. The agreement is intended to improve upgrade agility, cost control and sustainment efficiency over the life of the fleet.
Sustainment and Readiness Preparation
Parallel to production and testing, Northrop Grumman is developing training, sustainment and fleet management systems to ensure operational readiness upon initial deployment. These tools are being informed by current flight test data and supported by decades of sustainment experience across other defense platforms.
The objective is to ensure that the B-21 enters service with established maintenance processes, digital support systems and scalable sustainment infrastructure capable of supporting fleet expansion.
Industrial Base and Workforce
The B-21 program represents a large-scale national industrial effort. The workforce includes engineers, technicians, maintainers and Air Force operators collaborating across multiple facilities in the United States. The distributed supply chain is designed to ensure production scalability while maintaining quality and schedule discipline.
Investments in manufacturing capacity across multiple facilities are intended to support long-term production ramp-up as the Air Force expands the B-21 fleet.
Historical Namesake
The “Raider” designation honors the Doolittle Raid of World War II. On April 18, 1942, 80 airmen led by Lt. Col. James “Jimmy” Doolittle launched 16 B-25 Mitchell medium bombers in a strike mission that influenced the trajectory of the Pacific theater. Program officials state that the historical reference reflects the legacy of long-range strike innovation that the B-21 program seeks to continue.
Program Status
The B-21 Raider remains in production with final assembly ongoing in California. Flight and ground testing are continuing as production capacity increases. The first operational aircraft remains on track for delivery to Ellsworth Air Force Base in 2027, marking the beginning of the platform’s integration into the Air Force’s long-range strike fleet.
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