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Aerodynamically there is no benefit.All what this type of configuration does is warm up the little birds, as my thermodynamics professor used to say. Lots of air flowing against lots of surface, very inefficient.This subject of ducted fans was discussed not long ago: http://www.secretprojects.co.uk/forum/index.php/topic,4015.0.html--LucPS: The Cobalt is different, it is a classic canard pusher.
Aerodynamically there is no benefit.
All what this type of configuration does is warm up the little birds, as my thermodynamics professor used to say. Lots of air flowing against lots of surface, very inefficient.
This subject of ducted fans was discussed not long ago: http://www.secretprojects.co.uk/forum/index.php/topic,4015.0.html
--Luc
PS: The Cobalt is different, it is a classic canard pusher.
