Originally Posted by senormechanico
Imho, millions of spiky things, even on a tiny scale would give a lot of drag.
Not necessarily, it could enhance laminar flow control.
Apparently in some instances a fluid whether it be air or water
will shear against itself with less drag than shear against a smooth surface.
In other words it could possibly bring out some different hull
shapes eventually, that would have less drag than current
shapes do even if very smooth.
Not saying it would, just saying itís possible.
Look at vortex generators, just as a brief look, you would think they would be draggy as heck, but if they enhance the boundary layer and prevent flow separation, they can reduce drag.
In other words, not saying it would work
, just saying itís possible is all.