Today on YouTube I was looking through video from RCModelReviews and found one titled “ How ducting a propeller increases efficiency and thrust ". What really caught my attention is when the discussion of what I am calling a "coanda ducted fan”. This starts around 11:15 into the video. It seems to m…

Ducted Propellers - Today’s Rabbit Hole

jwalser (Jacob) December 11, 2017, 4:11pm 9

Here’s a post with some stl files. Are these the ones you are using @pakoregon?

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