Geared turbine engine with relatively lightweight propulsor module

This is a jet engine design where a large fan, which pushes air, is driven by a separate turbine through a gearbox. The design focuses on making the fan and its driving turbine relatively light compared to the whole engine, with the fan specifically having no more than 20 blades and the gearbox slowing it down significantly.

Why it matters: Additive manufacturing for complex, lightweight components has advanced significantly since 2021, potentially enabling more optimized designs for the propulsor and gear train to meet the specified weight targets.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedPrecision machining, high-temperature alloys, complex aerodynamics

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