Contraction of air stream from propellers; (a) free fan (b) ducted fan | Download Scientific Diagram
Electric Ducted Fan Theory Page 1 of 17 Electric Ducted Fan Theory This paper describes a simple theory of a ducted fan. It is a
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Double-Ducted Fan as an Effective Lip Separation Control Concept for Vertical-Takeoff-and-Landing Vehicles | Journal of Aircraft
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