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Date: Thu, 03 Feb 2005 14:46:44 -0600
From: Charlie England <ceengland@bellsouth.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Moroso Oil Pans for 13B
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Russell Duffy wrote:

> Or, you could spend the same amount of money and order a 
> custom aluminum finned oil pan from Perry Mick (yes, it is finned both 
> inside and outside). 
> See pics.  Paul Conner
>  
> The finned pan is another one of those ideas that absolutely must 
> work, but leaves a big question of just how much good it does.   I 
> have to admit that I've been trying to figure a way to put an 
> oil/water cooler in the new pan, or maybe some fins...
>  
> Rusty (still would like to use the small oil cooler) 

I wouldn't pretend to have the answers, but questions for me would be:

Would the improvement from pan fins offset the loss of delta-t advantage 
in the cooler?

How much drag will be added to get useful airflow to the pan?

Could I improve airflow through the cooler & gain more benefit than 
putting fins on the pan?

Most aerodynamicists say that how you leave the air is more important 
than how you meet it. How about adding an exit duct to the small cooler 
& use an exit designed to create a low pressure zone at the exit?

Charlie