flyrotary@lancaironline.net Mailing List Archive

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.

540-786-2200

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