Joseph Berki wrote:

Hi Paul,
        Attached is the scoop arrangement for cooling the rad

and the oil

cooler.  Will air follow the curve of the fuselage just

before entering or

will I need a snorkel to get to the free air?  Opening is 4.5

X 17 just a

bit under 25% of the cooling area. There is a shot from the

inside to the

opening.   I tried to limit the amount of scoop as it

presents drag.  I am

also going to leave the scoop and part of the lower cowl as

part of the air

frame.  Usually this is a removable cowl.

Joe Berki
Limo EZ

You need a boundary layer air bleed (snorkel) about 2 inches

high just above the scoop.

Size is about right. Here is a nice one made by Gary Spencer.

Making it part of the airframe is a good idea as it will add

strength without

adding any weight.

BTW Speaking of Gary Spencer did anybody go to the Jackpot air

races this past weekend?

I am very curious as Gary is close to beating Klause. He went 242 MPH at
Bonneville awhile back in his direct drive race modified Ford V8.

Paul Lamar

If you extend the scoop forward of the landing gear you will have
room for a nice
smooth lower drag boundry layer bleed curve.

Paul Lamar

Over in the Canard Community Forum there's a guy from Europe complaining
that his Cozy IV oil runs too cool, even in summer. He's planning a
butterfly valve or closable NACA floor  to close off his scoop. Here's a
picture of the scoop.
John SLade

That is not exactly a NACA scoop. NACA scoops are assumed to be on flat surfaces.
It is interesting never the less. Look's highly configuration sensitive. He may 
have stumbled on to something. The hump may help by pass the boundary layer.
On the other hand it is usually as cold as witch's tit over in Europe :)

Paul Lamar
 
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