> Now imagine a plane that instead of wings has long rotating cylinders, wi=
th
> the rotation axis along the length of these cylenders, which is left to
> right with respect to the plane.  Small lateral grooves in the cylinders
> would probably help, just like a baseball pitcher gets different effects
> depending on how he orients the spin axis relative to the laces (laces ar=
e
> roughness and more laces around the equator makes a stronger lift effect)=
..

Or dimples on a golf ball - another example of how a modification to someth=
ing makes it fly further.

IIRC the dimples on a golf ball were another of Barnes-Wallis' ideas (him o=
f the Dam Busters bouncing bomb).
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