Quote:
Originally Posted by Cd
Here are the two NACA ducts I have so far.
You can't see how rough they are here in the pictures.
They are purely function over form at this point.
The paint was still wet at this point.
I thought that for sure they would intrude down into my line of sight out the back, but they are placed just far forward enough to not even show up below the extension I have already added.
I really like the fact that to test them, all I have to do is look in my rear view mirror. ( I'm placing some tufts inside the box cavity. )
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By making holes in the panel you're destroying some of the facility for pressure recovery, which is the underlying premise for the box-cavity's performance. It needs to be as air-tight as you can make it.