Electric Ducted Fan
Which is a more efficient and economical form of propulsion? A ducted fan or fixed-pitch propeller?
When using the same electric motor-- same applied voltage, same power source, etc.... Which one is a better means of propulsion?
Since we don't see any ducted fan driven airplanes, then I would assume that fixed-pitch propeller is way better.
A look at what is currently available on eBay
 Freewing 70MM Ducted FAN For- Electric RC AEREI JET EDF US $17.58 
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 Astral 2.17" 6 Blades Electric Ducted Fan EDF w/o Motor US $9.00
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 E-flite Delta-V 15 69mm Electric Ducted Fan US $29.99
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February 15th, 2008 in
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