Water droplets moving on the canopy of WWII planes as you rev the engine stationary.

[Lieuie]

It seems that currently the water droplet effect on the canopy doesn't take into account the propeller at all but is only affected by the wind and the plane's speed. This is also the case with helicopters. Now I do realize that it's not that important as there are more important issues to take care of first and that most people fly jets which are not affected by it but I thought I should mention it.