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Oh! God!, I did write convex when I
meant to say concave! Mea culpa, mea culpa, mea maxima culpa! And yes. if the
surface preceding is 10cm thick, you would add 1.5cm to each side of the control
LE, then follow that 13cm-thick rounded shape with a CONCAVITY down to the
surface on each side. I should also have included the third thing this
control treatment does; it reduces or eliminates dead-band! How's that for a for
a reasonably simple mod, especially during manufacture! Drag reduction, flutter
reduction, dead-band reduction. That's right up there with Rogaine and Viagra!
And don't ask me why no kit or plane maker does that. Look at conventional prop
planforms, then look at the planforms of the high-efficiency props I
designed that give the Reno biplanes so much more speed. Why aren't the prop
makers jumping all over that? Why aren't all of the other racers jumping on
that? Fortunately, some are! At least two in F1 and at least one CS in Sport,
and possibly a second!
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