Do you have a copy of Hoerners Fluid Dynamic Drag Bill?
Lots of good
stuff in there on radiator ducting

Paul, I will work with you on this. I do not YET have Horners book, 
but I am going to go by San Jose State Aero Division and see if the 
store has a copy. I think the drawer slide scale approach will work 
fine for initial tests. The only thing i wonder about is if we make 
a cowl hugging exit duct, it wouldn't fit on the van. Not that I 
wouldn't like to try!
Bill Jepson

A P51 type duct on top of a flat piece of plywood was what I had in mind.

We can get at least the bottom half of an upside down cowl and aft tail
cone on a  4 by 8 foot plywood. Think of it as a wind tunnel floor.


Paul Lamar
 
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