I'm looking for any (racing-related) performance data as to whether it makes
a difference if you have a straight leading edge and all the washout in the
trailing edge versus blending the washout through the wing planform... i.e.,
if your total washout was 2°, the leading edge would be down 1° and trailing
edge up 1°. A website would be great. THX!
The most efficient and fastest wing will have a slight lifting section at the
root and a purely symetrical airfoil at the tip, which produces a washout
Unfortunately, one needs an engineering wind tunnel to test and determine the
very best at a specific wing loading and airspeed.
The lift gathered at the planned indicated airspeed will zero the symetrical
outer section to reduce drag and yet that wing area will be helpful in the
turns or higher "G" factors.
To obtain washout effect for a racing machine, I suggest a significant amount
of differential for the ailerons. For example the P-51 was set for about 15*
down and some 31* up aileron to prevent tip stall during high G maneuvers
(combat), (Figures are close but I forget the exact numbers.)
The problem is that racers seldom fly the ideal profile at a planned airspeed
and whatever you use is mostly a WAG (wild a$$ guess).
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