Wait aren’t all airplane wings bid inspired?
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How many blades do you have to add to a turboprop before it’s promoted to an open turbofan and touted as a major new innovation?
Mentour Pilot did a video about the CFM RISE open fan engines a few months ago, they’re somewhere between a turboprop and a geared turbofan. Able to cruise at turbofan speeds, but much higher bypass ratios like turboprops. They’re not technically new, but they’re possible now due to material advances. Pretty cool concept.




