Why CFM's open-fan engine must solve the acoustic problem that killed GE's 1980s open-rotor program

What was the issue and what impact did it have?
Aviation Week Network

Durability and Efficiency. How Open Fan Could Improve Both

The Open Fan engine, the distinctive architecture that could power the next generation of single-aisle aircraft, targets a ...
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Safran’s new open-fan aircraft engine moves closer to real flight testing by 2029

Franco-American aerospace company CFM—a joint venture between Safran Aircraft Engines and GE Aerospace—has moved to the next phase of development for its open-fan engine technology. The venture ...
autoevolution

Future Aircraft Will Have Jet Engine Fan Blades Outside the Nacelles, Airbus to Try It First

The Revolutionary Innovation for Sustainable Engines (RISE) program aims to come up with an open fan design for future ...