Quote:
Originally Posted by freebeard
My impression has been that a serrated edge affect mostly the acoustics.
Did you test varying scales of serration? |
Did I test at varying scales ? No. The CFD software is very unreliable.
But it was repeatable, which i found intetesting.
What got me curious, is that birds have semi serrated edges to the shape of their wings. ( Not the end feathers, which, as you know, actually do reduce drag by acting like winglets on aircraft )
Since this is common on birds such as hawks, I thought that this might be a feature to aid in stealth.
However, you also see it on vultures as well, which would have no need for stealth.
I'd show an example image here, but I'm posting using my Android phone.
Links don't seem to work.
I see that some wings use serrations for 'vortex shedding'.
Wind turbines use them for noise, but I haven't seen anything on making them more efficient because of it.
I would imagine a serrated edge on a Kammback would be useless, or perhaps worse.
A bit like putting vortex generators on the very back edge of a semi trailer.