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Engine · Air

XA103

Pratt & Whitney adaptive-cycle engine prototype for the Air Force's Next Generation Adaptive Propulsion program.

by Pratt & Whitney

DevelopmentEngineAirMilestoneMay 2026

Platform-agnostic adaptive engine Pratt & Whitney is developing under the U.S. Air Force NGAP program; hardware is being procured for assembly and ground test, which the company expects in the late 2020s.

Timeline1

  1. MilestoneConfirmed

    Assembly readiness review completed

    Pratt & Whitney completed a fully digital assembly readiness review for the XA103, moving from digital design to procuring and building test hardware.

    SourcesRTX

Solid entries are confirmed, outlined reported, dashed estimated or still to come; dotted italic entries are speculative. Dates show only the precision the sources give.

Sources1

  1. 1.
    CompanyRTX's Pratt & Whitney completes fully digital assembly readiness review for NGAP engine

    RTX · May 8, 2026 · Supports: System, System milestone

    “Pratt & Whitney's NGAP team is working with its supply base to procure the components needed to assemble the XA103 for test, which is expected in the late 2020s.”

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