Paul wrote:

As Perry says, he has been working on this for 13 years so far.

Well, it's not that bad.  13 years to build the plane, about 5 years
now researching ducted fans, 3+ years now since I started the engine
installation, 1.5 years since the first ducted fan powered tests,
10 months now of flying them.


Perry J. Mick
Mick Duckt N7XR
http://www.ductedfan.com

 
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