Hi all!
Volf propeller he
http://www.rexresearch.com/volfprop/volfprop.htm


I have been thinking alot about how this propeller would do, I wish I had a workshop, CNC, and tools to build one.. this amazing prop is claimed to be super quiet and efficient.. so any more info from the article on it or any word of experience in propellers are very appreciated





what about this propeller
( hit CTRl-F and type "An Air Screw That Ridicules Propeller" )
http://www.rexresearch.com/aero/1aero.htm

regards
kalle