RE: NACA ducts - how do they work?

> From: Steve Wiseman
> 
> >Anyone know how a NACA duct works and what it is supposed to
> do?
> 
> Where they're particularly useful is in a flat sheet with a laminar
> (smooth) flow over the surface.

Thanks Steve. I think the important point is just this. I doubt that
there are any/many areas on a Se7en where flow is laminar. Also, if the
point of the NACA is to gain inlet air at little/no loss to aerodynamic
flow then it's all pointless on a Se7en which hardly has decent
aerodynamics to start with. Perhaps then I ought to be looking at an
ungainly forking scoop.

Oh, the point of all this is to gain cold air to my inlet. I've seen
what is described as "blisters" for the Caterham nosecone. Had thought
it might be better to use a NACA duct instead but I think the blister
will ultimately feed a higher quantity of air.
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