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I assume we are talking about AREA? Cowl would explode if only 80% of intake air made it out : ) This is a highly conditional subject. If you look at some of the fastest RV's (Dave Anders, Tracy Sailor, Rich Jankowski, etc, the outlet area is LESS than the inlets. All depends on what you are optimizing, how good are your ducts & diffusers, etc.
Tracy (crook, not sailor)
On Mon, Jun 15, 2009 at 2:53 AM, Al Gietzen <ALVentures@cox.net> wrote:
Don said:
The conventional wisdom is that the discharge air from the
cowl needs to be about 80% of the incoming air.
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This is only "conventional wisdom" of those that believe air contracts when
it is heated. For the rest it is about 130%.
Al
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