Rolf Pfeiffer wrote:
 > > >
 > > > Hello Paul,
 > > > and to all the flyers in the group.
 > > >
 > > > Regarding aerodynamics, there is a new development under way in
creating
 > > > updraft by means of a rotating "fan". The site is
 > > > http://www.fanwing.com/
 > > >
 > > > It is probably good for low speeds only. However, it seems to promise
 > > > much higher lift at slow speeds and short take-off. I wonder if
someone
 > > > has any comments if this system may actually be more efficient?
 > > >
 > > > Regards
 > > > Rolf Pfeiffer

Years ago you could buy a kite that looked like an airplane with the wings
made of flat sheets bent into an "S" shape and rotated about their spars as
seen on this web site. There was no structure below the wing at all and it
flew in even the slightest wind. Very interesting. Lynn E. Hanover

 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2002 All world wide rights reserved.