Russell Kent wrote:

Paul Lamar wrote:

BTW Here is a picture of some of the air outlets on that
Turbo Lance I mentioned. There is another set of louvers on
the other side in the same place as well as two bottom outlets
with cowl flaps.

Apparently this curve on the cowl is a low pressure area
as the air will tend to speed up and move laterally here
because of the high pressure build up in front of the
windshield.

Paul,
I'm not certain that you can safely conclude that the top louvers imply a low
pressure area.  It occurs to me that the top louvers might be there to help
the turbo (et al.) shed heat after shutdown (and not bake the components under
the cowl).

Russell Kent

Trust me Russell. After measuring a bunch of vehicles with windshield
and hoods I can safely say there is a high pressure area at the base of
the wind screen. That is why all heater air intakes are located there.
The air has no place else to go but sideways. When air flows over a
curved surface the pressure on that surface is reduced. That's how 
wings work.

Paul Lamar
 
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