GE Aerospace secures USAF contract for GE426 engine preliminary design review for autonomous combat aircraft

GE Aerospace has been awarded a U.S. Air Force contract to complete the preliminary design review (PDR) for its GE426 engine, a next-generation propulsion system for the medium-thrust-class Autonomous Collaborative Platform (ACP) effort, building on the company’s concept design review completed in August 2025.

GE Aerospace (NYSE:GE) has been awarded a contract from the U.S. Air Force to complete the preliminary design review (PDR) for its GE426 engine in support of the Air Force’s medium thrust class Autonomous Collaborative Platform (ACP) effort, according to official disclosures.

The GE426 is a next-generation propulsion system purpose-built for uncrewed, autonomous combat aircraft, delivering performance, affordability, and manufacturability. In August 2025, GE Aerospace successfully completed the concept design review of the GE426, validating the engine’s architecture. Under this contract, GE Aerospace will mature the GE426 prototype engine through PDR, refining system capability, producibility, and cost while aligning with Air Force requirements for the medium-thrust-class ACP fleet.

This development matters because the Air Force Research Laboratory’s ACP initiative focuses on developing advanced autonomous platforms that enable uncrewed systems to operate as coordinated teams alongside crewed aircraft. GE Aerospace has previously demonstrated rapid design, manufacturing, and testing capabilities with the GEK800 and GEK1500 engines developed in partnership with Kratos Defense & Security Solutions. The company is leveraging advanced manufacturing techniques, digital engineering tools, and its propulsion experience to meet the unique performance, affordability, and scalability requirements of autonomous combat platforms. Industries impacted include aerospace propulsion, autonomous defense systems, and additive manufacturing.

Regional stakeholders include U.S. Air Force research laboratories, defense contractors, and suppliers of small turbofan engines.

For investors, the GE426 program adds to GE Aerospace’s growing portfolio of small, affordable engines that can be produced at scale for autonomous combat platforms and collaborative combat aircraft, reinforcing long-term revenue visibility in the defense segment.

GE Aerospace is a U.S.-based aerospace propulsion company headquartered in Cincinnati, Ohio, spun off from General Electric.

The U.S. Air Force Research Laboratory is the scientific research and development arm of the U.S. Air Force, leading the Autonomous Collaborative Platforms initiative.