Subject: Scoop
From: ACRE
Date: 7/14/2003, 7:28 AM


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

Joseph Berki wrote:

When [canard] builders convert from the NACA inlet to a top - down cooling
arrangement they usually have too much cooling.  The next step would be to
reduce the size of the inlet.
Joe Berki
Limo EZ

There are a couple of reasons for that. The main reason is the cooling air is not
being heated by the exhaust system first.

Paul Lamar

 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2003 All world wide rights reserved.