I am using a GWA-1 airfoil. It's trailing edge is blunt, 1/2 inch thick.
Supposedly as the wing reaches it's stalling angle, a rotating horizontal
vortex develops along this trailing edge. The higher pressure on the
underside and lower pressure on the top forces the vortex to rotate such
that it tend to force the upper air to stay attached to the top surface of
the wing much longer than would occur on a sharp trailing edge. Thus the
wing will be an aggressive climber at slow speed. The proof is going to
occur if I can finally finish mine and get it into the air. I have so many
other interests that the KR is in conflict at the moment. I will report the
results eventually.
Regards
Haarold Woods
Orillia,ON.Canada
haroldwo...@rogers.com
