> On the airplane, most of that fan-generated breeze is going around the
> outside of the engine cowling. The air inlets for engine cooling are
> actually quite small, and they are adjacent to the prop hub where
> relatively little thrust is generated. So that low-pressure generation
> on the backside of the engine compartment is very important.
Airplane related (but on a smaller scale)... I know from my days of
building/flying R/C planes that when enclosing the engine with a cowl, the
rule of thumb was to provide a 2:1 outlet/inlet area ratio for engine
cooling ventilation.
Kurtis Jones
Russellville, Arkansas
1963 TR4 - CT19389L
1959 AH Bugeye - AN5L23250
www.geocities.com/tr4_1963
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