Al Gietzen wrote:

Brilliant! brilliant! Brilliant!

IMHO this will become the cooling system of choice.

Hey; calm down already!  Aside from being ugly, high drag, and very
vulnerable to a stray rock kicked up by the prop nose wheel . . .;

well,

it is cheap and simple.

Al

Who says it is high drag?  I suspect it is no more drag than a P51 scoop
duct and exit slot. In fact I will wager you won't be able to measure
the difference.

Paul Lamar

I, for one, say it is high drag.  Visualize the air behind this setup.
Massive amount of turbulence.  The idea of the P-51 style scoop is to
maintain attached flow on the external surfaces.  If you can do that
(and the p-51 did that quite well) you have very little turbulence aft
of the scoop.  Turbulence = drag.

I'd suggest a very open matrix core would be most effective in this
configuration.  With no slowing of the air coming in before entering the
core, there is no place for static pressure recovery.  Expect a fair
amount to want to spill around the sides.

I'm not surprised that it caused rumbling under the floorboards on the
Zenith Zodiac 601.

But it is a safe wager; the odds of there ever being a 1 - 1 comparison
is about the same as winning the lottery.

Al

 
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