{"id":157791,"date":"2026-09-16T23:34:00","date_gmt":"2026-09-16T18:04:00","guid":{"rendered":"https:\/\/aviationa2z.com\/?p=157791"},"modified":"2026-09-16T22:49:46","modified_gmt":"2026-09-16T17:19:46","slug":"b-52-upgrade-program-advances-with-new-engines","status":"publish","type":"post","link":"https:\/\/aviationa2z.com\/index.php\/2026\/09\/16\/b-52-upgrade-program-advances-with-new-engines\/","title":{"rendered":"Largest Air Force in the World Pushes Historic Bomber Toward B-52J Era"},"content":{"rendered":"\n

NATIONAL HARBOR, MD\u2014<\/strong> The US Air Force<\/a> has advanced two major B-52 Stratofortress <\/a>modernization programs, moving its engine replacement effort into development while authorizing initial production of a new radar system.<\/p>\n\n\n\n

The upgrades are designed to extend the bomber\u2019s operational life into the 2050s and support its planned transition from the B-52H to the B-52J.<\/p>\n\n\n\n

The Commercial Engine Replacement Program (CERP) entered the Engineering and Manufacturing Development phase after receiving Milestone B approval on June 1, 2026.<\/p>\n\n\n\n

The modernization work will involve Boeing at San Antonio International Airport (SAT) in Texas, where two test aircraft are scheduled to receive the new engines and radar systems.<\/p>\n\n\n\n

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Photo: US Air Force<\/figcaption><\/figure>\n\n\n\n

B-52 Engine Upgrade Program Advances<\/h2>\n\n\n\n

The engine program will replace the B-52\u2019s aging Pratt & Whitney<\/a> TF33 engines with Rolls-Royce F130 engines. The commercial-derived powerplants are expected to improve reliability while making spare parts and maintenance support easier to manage.<\/p>\n\n\n\n

The Air Force established CERP\u2019s total acquisition cost at $20.2 billion, covering research, development, testing, procurement and military construction. Of that amount, $2.6 billion had already been spent since 2018, according to the service.<\/p>\n\n\n\n

Engine integration has also passed an important design hurdle. Earlier wind-tunnel testing identified airflow distortion around the engine inlet, prompting engineers to redesign the nacelle and inlet before validating the changes through additional testing.<\/p>\n\n\n\n

Boeing and Rolls-Royce completed the program\u2019s Critical Design Review in May 2026, allowing the project to move toward physical aircraft modifications.<\/p>\n\n\n\n

The Air Force has also assessed the B-52\u2019s structure and determined that the airframe can support the new engines, additional electrical generation, and continued operations for decades.<\/p>\n\n\n\n

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Photo: USAF<\/figcaption><\/figure>\n\n\n\n

B-52 Radar Production Program Advances<\/h2>\n\n\n\n

The B-52 Radar Modernization Program reached its own major milestone in August when the Air Force approved Milestone C and authorized Low-Rate Initial Production. The program will replace the older APQ-166 analog radar with the APQ-188 Active Electronically Scanned Array radar.<\/p>\n\n\n\n

Raytheon Technologies received a contract worth up to $603 million for the new radar systems, while Boeing received a $163 million contract for aircraft integration kits. The production plan covers five lots and is expected to provide 74 kits for the fleet, ASF Magazines<\/a> reported.<\/p>\n\n\n\n

The new AESA radar is intended to improve navigation, targeting, reliability and all-weather operations. Ground testing and a Production Readiness Review completed earlier in 2026 helped demonstrate that the system was ready to enter initial production.<\/p>\n\n\n\n

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Photo: By Airman 1st Class Victor J. Caputo – US Air Force, Public Domain<\/figcaption><\/figure>\n\n\n\n

B-52J Testing Plans Move Forward<\/h2>\n\n\n\n

Two B-52 aircraft have been selected for combined engine and radar testing after recently completing depot maintenance.<\/p>\n\n\n\n

Although the aircraft are currently supporting operational missions, the Air Force plans to send them to Boeing\u2019s San Antonio facility for modernization in the coming months.<\/p>\n\n\n\n

The modified aircraft will later undergo extensive testing to validate the new systems before wider fleet upgrades begin. <\/p>\n\n\n\n

The modernization effort also includes improved communications, electrical systems, weapons integration and other technologies intended to keep the B-52 operational well beyond its original service era.<\/p>\n\n\n\n

With the engine and radar programs reaching major acquisition milestones in 2026, the Air Force is moving the long-serving bomber closer to its B-52J configuration while balancing modernization work with the fleet\u2019s continuing operational demands.<\/p>\n\n\n\n

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Largest Air Force in the World To Invest $1.7 Billion To Extend B-1B And B-2 Bombers<\/a><\/blockquote>