GE Aerospace, Kratos win JASSM engine development deal
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The U.S. Air Force has designated a new turbofan engine built by GE Aerospace and Kratos Defense & Security Solutions as the F143-ZZ-100 and awarded the companies a contract to develop it as a second engine option for the Joint Air-to-Surface Standoff Missile, the companies announced. The engine, previously known as the GEK800, generates about 800 pounds (3.6 kilonewtons) of thrust. Under the new Engineering, Manufacturing and Development contract, GE Aerospace and Kratos will advance the F143 as a second-source propulsion system for JASSM, the Air Force's primary long-range cruise missile. JASSM and its extended-range and anti-ship variants currently rely on the Williams International F107-WR-105 turbofan as their sole engine supplier. The Pentagon awarded Williams a $253.7 million contract in December 2024 to expand production of that engine to support higher output across the JASSM, LRASM and Tomahawk missile programs. GE Aerospace and Kratos began developing the GEK800 in 2023, combining internal investment with funding from the Air Force Research Laboratory. The companies said the joint team has logged more than 50 engine starts in ground testing at Kratos and GE Aerospace facilities. In 2025, the engine completed altitude testing at Purdue University's Maurice J. Zucrow Laboratories. "The F143 designation and EMD award are a testament to the strong performance and...
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