En hoe dacht je dat aan te pakken? Dit is geen antwoordmachine.
Het lijkt me verder meer een vliegtuigbouwkunde vraag - niet het doel van dit forum.

Uit:https://en.wikipedia.org/wiki/Reynolds_number : (met V = 0,85 x v_geluid)

Reynolds numbers are used in airfoil design to (among other things) manage "scale effect" when computing/comparing characteristics (a tiny wing, scaled to be huge, will perform differently). Fluid dynamicists define the chord Reynolds number R like this: R = Vc/ν, where V is the flight speed, c is the chord length, and ν is the kinematic viscosity of the fluid in which the airfoil operates, which is 1.460×10⁻⁵ m²/s for the atmosphere at sea level. In some special studies a characteristic length other than chord may be used; rare is the "span Reynolds number", which is not to be confused with spanwise stations on a wing, where chord is still used.