Mailing List flyrotary@lancaironline.net Message #57554
From: Mark Steitle <msteitle@gmail.com>
Subject: Re: [FlyRotary] Re: Radiators
Date: Wed, 7 Mar 2012 14:13:24 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Bill,

I don't think Gordon is running a rotary, so the 2/3 - 1/3 rule
probably doesn't apply.  I have no idea what the water-oil ratio of is
for a 4.3L Chevy V-6, but I'd bet that info is available somewhere on
the internet.

Mark

On 3/7/12, William Jepson <wrjjrs@gmail.com> wrote:
Gordon, the oil cooling required in a rotary is higher than a standard
I.c.e. The oil cooling is about 1/3 of the total cooling. There are lots of
"rules of thumb" on cooling. Typically about 3 ci of heat exchanger per hp.
That would be divided 2/3 water and 1/3 oil cooling. Ducting changes things
dramatically but that is a start.
Bill Jepson
On Mar 7, 2012 7:20 AM, "Gordon Alling" <gordon@acumen-ea.com> wrote:

I’m thinking about radiators for my 13B Defiant.  I’ve noted some
automotive radiators integrate oil and transmission fluid cooling with the
engine coolant heat exchanger.  Has anyone looked at these as a means of
integrating the oil and water cooler for an aircraft application?  Does
anyone have an estimate of the oil and transmission heat load in a typical
GMC 4.3 L  Jimmy?****

** **

Gordon C. Alling, Jr., PE****

President****

*acumen* *Engineering/Analysis, Inc.*****

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540-786-2200****

www.acumen-ea.com****

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