Thin Airfoil and Climb Performance
P.S. Note that in the paper that they talk about little improvement
in basic airfoils or passive boundary layer control. They leave the
door open to performance improvements via active boundary layer
control methods (turbulators, Sinha's "de-turbulator" tape, etc). The
trick to active boundary layer control is in making it both reliable
and efficient over the wide speed band and aerodynamic conditions that
sailplanes fly.
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