RTX said Pratt & Whitney has designed its XA103 next‑generation adaptive fighter engine prototype entirely in a digital environment, using digital engineering, model‑based systems and a collaborative workspace to speed development and improve testing, reporting and supplier manufacturing readiness. The company said the program’s detailed design review was completed in early 2025, and it is now preparing to build a prototype that will be tested and refined ahead of a ground test expected in the late 2020s.

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