Bob Salvo wrote:

Reflexed airfoils can operate quite well on tailed gliders and
this configuration offers many pratical benifits.


Unfortunately, though, reflexed airfoils, that I have seen, are all very
sensitive to rain, bugs, and turbulence. Can't rely on their published L/D in
the real world.
Bob

But reflexed airfoils are used by modern flapped "racing gliders"
without these problems (ASW 27, Ventus 2, etc) in cruise. The problem
for the Standard Class is to get good climb out of the reflexed airfoil
without diminishing the high speed ability too much.

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Eric Greenwell
Washington State
USA