Aerodynamics of carrying water

Reynolds number is not an aerodynamic phenomenon. It's a=20
dimensionless
quantity which is useful in characterising certain aerodynamic=3D20
phenomena, principally those which involve a laminar - turbulent=3D20
transition.

Perhaps I should have said "Reynolds number which characterises
certain
aerodynamic phenomena" and it is a fact that the slope of the lift
coefficient increases with increasing Reynolds number.

What do you mean by "slope of the lift coefficient"? With respect to=20
what?

Ian

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the standard curve: plot lift coefficient against alpha (angle of
attack), for the same alpha flying at a higher speed increases the
Reynolds number, at this higher speed the slope is increased slightly
over what it was at the lower speed. It's a well known effect.


Rgds,

Derrick Steed