Mailing List flyrotary@lancaironline.net Message #30743
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Re: [FlyRotary] Re: finding a radiator
Date: Wed, 15 Mar 2006 20:35:16 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Hi Chris,

If you have that much length available for a duct, then I agree.  The streamline duct is the way to go (in my opinion).  I have a max of 6" duct length (outside) and a minimum of 3" (on the inside), so for those short distances the Exponential horn may be more suitable.

Ed
----- Original Message ----- From: "the mallorys" <candtmallory@cox.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, March 15, 2006 5:50 PM
Subject: [FlyRotary] Re: finding a radiator


Ed,

I did some plotting, and here is what I came up with:
The red line is a straight sided square duct,
Light blue is the exponential Horn duct square,
Brown is the streamline duct square.

I don't know if the exponential horn differs enough from a straight line to
make a difference.

Chris



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