If one chooses the unducted-fan (UDF) engine path, as mentioned in “Smoke and Mirrors” (AW&ST July 26, p. 32), a viable UDF will not be available much before 2025. Can an airframer start now to invest ...
Hailed for its fuel-saving potential when it was developed 19 years ago, the concept never quite got off the ground Hailed for its fuel-saving potential when it was developed 19 years ago, the concept ...
General Electric designed this proof-of-concept turboprop “unducted fan” engine as part of NASA’s Advanced Turboprop Project, which was aimed at overcoming the three-fold increase in fuel prices ...
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