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US Air Force Completes B-52J Engine Replacement Design Review

The US Air Force finalizes the B-52J engine replacement design, enabling Boeing to begin modifications with Rolls-Royce F130 engines.

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This article is based on an official press release from the Air Force Life Cycle Management Center.

The U.S. Air Force has officially completed the Critical Design Review (CDR) for the B-52J Commercial Engine Replacement Program (CERP), marking a major milestone in the effort to modernize the Cold War-era bomber fleet. According to an official press release from the Air Force Life Cycle Management Center (AFLCMC), this review clears the path for the physical modification of the first two B-52 aircraft.

The comprehensive technical assessment brought together independent experts from the Air Force, Boeing, and Rolls-Royce to scrutinize the system design. By finalizing the design phase, the military ensures that the new engine integration meets all technical and warfighter requirements before major structural work begins.

This massive modernization effort is designed to replace the bomber’s original 1960s-era TF33 engines, ensuring the B-52 Stratofortress remains a formidable asset in the nation’s long-range strike arsenal through 2050 and beyond.

Moving from Design to Physical Modification

The Role of Boeing and Rolls-Royce

With the design now finalized, the program is rapidly transitioning toward aircraft modification. Boeing, serving as the prime contractor for integration, is currently procuring and manufacturing the necessary parts. The aerospace company will begin modifying the first two B-52H aircraft into the new B-52J configuration at its facility in San Antonio, Texas.

The modernization centers on replacing the legacy powerplants with fuel-efficient F130 engines manufactured by Rolls-Royce. In the AFLCMC press release, officials noted that the first bomber is scheduled to arrive for modification later this year.

“This CERP critical design review is the culmination of an enormous amount of engineering and integration work from Boeing, Rolls Royce, and the Air Force that will enable the B-52J to remain in the fight for future generations,” said Lt. Col. Tim Cleaver, Bombers Directorate CERP Program Manager.

Cleaver further emphasized the importance of the milestone, noting that it represents the transition from a conceptual design to a physical product that will be tested and fielded for Air Force Global Strike Command.

Testing and Future Fleet Upgrades

Edwards Air Force Base Trials

Beyond the engines themselves, the B-52J upgrade includes critical new subsystems. According to the Air Force, each new engine will feature a modern generator, significantly increasing the aircraft’s electrical power capacity to support future capabilities and advanced avionics.

Following the initial modification work in Texas, the two B-52J test aircraft will be transferred to Edwards Air Force Base in California. There, they will undergo extensive flight and ground testing to validate the new systems and ensure operational safety.

The successful conclusion of the CDR follows years of detailed design work and collaborative “dry runs” between the Air Force and its industry partners. Once the testing phase at Edwards AFB is complete, the program will proceed with modifying the remainder of the B-52H fleet.

AirPro News analysis

The successful Critical Design Review for the B-52J Commercial Engine Replacement Program highlights the U.S. Air Force‘s commitment to extending the lifespan of its most proven heavy bomber. By replacing the aging TF33 engines with modern Rolls-Royce F130s, the military is not only addressing long-standing maintenance and fuel efficiency challenges but also future-proofing the airframe. The addition of modern generators is particularly noteworthy, as increased electrical capacity is a prerequisite for integrating next-generation sensors, electronic warfare suites, and advanced weapon systems. We view this milestone as a critical step in maintaining a credible long-range strike deterrent through the middle of the 21st century.

Frequently Asked Questions (FAQ)

What is the B-52J Commercial Engine Replacement Program (CERP)?
It is a U.S. Air Force modernization initiative to replace the 1960s-era TF33 engines on the B-52 bomber fleet with modern, fuel-efficient Rolls-Royce F130 engines.

Who are the primary contractors for the B-52 engine replacement?
Boeing is the prime contractor responsible for integration and aircraft modification, while Rolls-Royce is manufacturing the new F130 engines.

Where will the B-52 modifications take place?
The initial modifications of the first two aircraft will occur at Boeing’s facility in San Antonio, Texas.

When will the first B-52 arrive for modification?
According to the Air Force Life Cycle Management Center, the first bomber is scheduled to arrive for modification later this year.

How long is the B-52 expected to remain in service?
With these upgrades, the Air Force expects the B-52 Stratofortress to remain operational through 2050 and beyond.

Sources

Photo Credit: Air Force Life Cycle Management Center

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Defense & Military

Pratt Whitney F119 Engine Surpasses One Million Flight Hours

Pratt & Whitney’s F119 engine fleet hits 1 million flight hours, backed by a $1.5B USAF sustainment contract for the F-22 Raptor.

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Pratt & Whitney announced on June 30, 2026, that its F119 engine fleet has surpassed one million cumulative flight hours, marking a major operational milestone for the propulsion system that powers the United States Air Force Lockheed Martin F-22 Raptor.

The milestone, announced from the manufacturers East Hartford, Connecticut headquarters, underscores the long-term viability of the world’s first fifth-generation fighter engine. With the final production F119 delivered in 2013, the focus has shifted entirely to sustainment and modernization to keep the F-22 fleet combat-ready.

Sustainment and fleet readiness

The achievement follows a major sustainment agreement secured on February 20, 2025, when Pratt & Whitney, an RTX business, was awarded a three-year contract valued at up to $1.5 billion to support the F119 fleet. The contract covers maintenance and modernization for more than 400 engines currently in service.

To maintain the engines decades after production ceased, Pratt & Whitney utilizes Model-Based Systems Engineering and a Usage-Based Lifing program. These initiatives are designed to lower lifecycle costs, improve readiness rates, and implement engine control schedule updates, ensuring the F-22 remains operationally viable for the United States Air-Forces (USAF).

Technological legacy and operational history

The F-22 Raptor entered operational service with the USAF on May 12, 2005. Each aircraft is powered by two F119 engines, which feature a unique thrust-vectoring nozzle. This design enables supercruise, allowing the aircraft to sustain supersonic speeds without engaging afterburners.

The technological foundation established by the F119 directly informed the development of the Pratt & Whitney F135 engine, which currently powers the Lockheed Martin F-35 Lightning II.

“Having powered the F-22 Raptor since it launched over 20 years ago, the engine continues to provide unmatched capability, safety and readiness rates,” said Jill Albertelli, President of Military Engines for Pratt & Whitney. “This milestone demonstrates Pratt & Whitney’s commitment to delivering for our customers.”

AirPro News analysis

Reaching one million flight hours on a closed-production engine line highlights the critical role of predictive maintenance and usage-based lifing in modern military aviation. Because the USAF cannot simply procure new F119 engines to replace aging units, the $1.5 billion sustainment contract awarded in 2025 is essential for maintaining the air superiority mission of the F-22.

We view the continued investment in F119 modernization as a clear indicator that the F-22 will remain a cornerstone of USAF operations well into the next decade, even as next-generation air dominance platforms are developed and fielded.

Sources: RTX (Pratt & Whitney)

Photo Credit: RTX

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Defense & Military

Vertex Aerospace Wins $500M USAF C-12 Logistics Contract

Vertex Aerospace secures a $500M IDIQ contract for global C-12 fleet logistics support across 23 locations through 2031.

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Vertex Aerospace LLC has secured a firm-fixed-price, indefinite-delivery/indefinite-quantity contract with a ceiling of $500,000,000 to provide global contractor logistic support for the United States Air Force C-12 aircraft fleet.

Awarded on June 26, 2026, by the Air Force Life Cycle Management Center at Tinker Air Force Base (TIK), the agreement ensures operational readiness for the military variant of the Beechcraft King Air. According to the Department of Defense contract announcement, the C-12 fleet provides time-sensitive movement of personnel, cargo, and medical evacuation services.

Mission and command support

The logistics support contract covers a broad operational mandate. Beyond standard transport and medical evacuation, Vertex Aerospace will provide test support for several key defense entities. These include the Air Force Materiel Command (AFMC), the Defense Intelligence Agency (DIA), the Defense Security Cooperation Agency (DSCA), and Pacific Air Forces (PACAF).

The acquisition was conducted as a competitive process, with the Air Force receiving three offers. The contracts also involves Foreign Military Sales, reflecting the international footprint of C-12 operations and allied support requirements.

Global footprint and funding

Work under the contract will be distributed across 23 locations worldwide, supporting the highly dispersed nature of the C-12 fleet. Domestic work sites include Joint Base Elmendorf-Richardson in Alaska, Edwards Air Force Base in California, Joint Base Andrews in Maryland, Holloman Air Force Base in New Mexico, and Vertex Aerospace facilities in Madison, Mississippi.

International support locations span South America, Africa, Europe, and Asia-Pacific. Designated sites include Buenos Aires, Argentina; Gaborone, Botswana; Brasilia, Brazil; Bogota, Colombia; Cairo, Egypt; Accra, Ghana; Tegucigalpa, Honduras; Budapest, Hungary; Yokota Air Base, Japan; Nairobi, Kenya; Rabat, Morocco; Manila, Philippines; Riyadh, Saudi Arabia; Bangkok, Thailand; Ankara, Turkey; and Oslo, Norway.

Initial funding obligated at the time of the award includes $237,125 in fiscal 2026 operation and maintenance funds, $7,250 in research, development, test, and evaluation funds, and $5,659 in Foreign Military Sales funds. The Department of Defense expects all work to be completed by June 30, 2031.

AirPro News analysis

The C-12 Huron serves as a critical utility workhorse for the United States military-aircraft and allied nations. Because these twin-engine turboprops operate in small detachments across a vast geographic area rather than being concentrated at a few major hubs, maintaining fleet readiness requires a highly distributed logistics network. We view this $500,000,000 ceiling contract as a reflection of the logistical complexity involved in supporting a globally dispersed fleet. By consolidating support under a single indefinite-delivery/indefinite-quantity vehicle, the Air Force Life Cycle Management Center ensures consistent maintenance standards and parts availability from domestic test centers to remote international support locations.

Sources: U.S. Department of Defense

Photo Credit: Yokota Air Base – Air Force

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Defense & Military

Airbus and Alta Ares Partner on AI Counter-Drone Integration

Airbus Defence and Space and Alta Ares signed an MOU to integrate AI-guided interceptors into Airbus air defense command systems.

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Airbus Defence and Space and European defense technology company Alta Ares signed a memorandum of understanding on June 11, 2026, to integrate artificial intelligence-guided counter-drone interceptors into Airbus air defense command systems.

Announced during the ILA Berlin Air Show, the partnership aims to create a unified sensor-to-shooter chain capable of neutralizing mass-deployed, one-way attack drones. According to a press release issued by Airbus, the agreement will link Alta Ares interceptor hardware and targeting software directly into existing Airbus battle management networks.

Integration of AI and interceptor hardware

The technical integration focuses on connecting Alta Ares systems with Airbus command software. Alta Ares will integrate its Pixel Lock artificial intelligence platform, along with its Black Bird medium-range and X-Lock short-range interceptors, into the Airbus Fortion Integrated Battle Management Software (IBMS) and the Fortion Surface-to-Air Missile Operation Centre (SAMOC).

Alta Ares Co-Founder and Chief Executive Officer Hadrien Canter stated that modern air defense requires both software and hardware operating simultaneously at scale.

“Integrating Pixel Lock and our interceptors into Fortion IBMS means operators get a single, coherent sensor to shooter chain from detection to neutralisation. That’s what theatre commanders are actually asking for,” Canter said.

François Lombard, Head of Connected Intelligence at Airbus Defence and Space, noted that defending against suicide drones is an urgent priority in current asymmetric conflict environments. He emphasized the need for cost-efficient solutions that fit within the broader air defense ecosystem to protect European airspace and allied forces.

Airbus expands counter-UAV portfolio

The Alta Ares agreement follows a series of rapid expansions in the Airbus counter-Uncrewed Aerial Systems (C-UAS) portfolio through collaborations with specialized defense startups. The prime contractor has utilized the ILA Berlin event to solidify multiple integration partnerships.

On June 10, 2026, Airbus Helicopters signed a cooperation agreement with German drone manufacturer Quantum Systems. That partnership will explore integrating C-UAS interceptors onto military helicopters, beginning with the multi-role H145M platform.

Earlier in the year, on March 30, 2026, Airbus demonstrated its own Bird of Prey interceptor drone. During that test, the autonomous system engaged a target using a Mark I missile developed by Estonian startup Frankenburg Technologies.

Alta Ares scales production

Founded in 2024, Alta Ares specializes in counter-drone systems and on-board artificial intelligence. The company saw its systems first operationally deployed in Ukraine during 2024 and has since expanded to meet military demand for defenses against autonomous drones.

On June 9, 2026, two days prior to the Airbus announcement, Alta Ares secured €50 million in a Series A funding round led by Air Street Capital. The company stated the funding will be used to scale the production of its X-Lock and Black Bird interceptor platforms.

AirPro News analysis

The rapid succession of Airbus partnerships at ILA Berlin highlights a strategic shift for the aerospace manufacturer. Rather than developing bespoke interceptor solutions entirely in-house, Airbus is positioning its Fortion software suite as the central nervous system for European air defense while plugging in specialized hardware from agile startups like Alta Ares, Quantum Systems, and Frankenburg Technologies. We view this modular approach as a direct response to the rapid iteration of drone warfare observed in recent conflicts, where traditional surface-to-air missiles are economically unviable against mass-deployed, low-cost autonomous threats. By securing integration rights with well-funded startups, Airbus ensures its command-and-control architecture remains indispensable to European defense ministries.

Sources: Airbus

Photo Credit: Airbus

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