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References: <list-5432101@logan.com>
Date: Wed, 7 Mar 2012 10:44:07 -0800
Message-ID: <CAN=mtad_F76=iXfQLWrgw73ijQo0=62+wMWP=tVLFV+3Z-rfKg@mail.gmail.com>
Subject: Re: [FlyRotary] Radiators
From: William Jepson <wrjjrs@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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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=92m thinking about radiators for my 13B Defiant.  I=92ve noted some
> automotive radiators integrate oil and transmission fluid cooling with th=
e
> 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 typica=
l
> GMC 4.3 L  Jimmy?****
>
> ** **
>
> Gordon C. Alling, Jr., PE****
>
> President****
>
> *acumen* *Engineering/Analysis, Inc.*****
>
> ** **
>
> 540-786-2200****
>
> www.acumen-ea.com****
>
> ** **
>

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<p>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 =
&quot;rules of thumb&quot; on cooling. Typically about 3 ci of heat exchang=
er per hp. That would be divided 2/3 water and 1/3 oil cooling. Ducting cha=
nges things dramatically but that is a start.<br>

Bill Jepson </p>
<div class=3D"gmail_quote">On Mar 7, 2012 7:20 AM, &quot;Gordon Alling&quot=
; &lt;<a href=3D"mailto:gordon@acumen-ea.com">gordon@acumen-ea.com</a>&gt; =
wrote:<br type=3D"attribution"><blockquote class=3D"gmail_quote" style=3D"m=
argin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple"><div><p class=3D"MsoNorm=
al"><font face=3D"Calibri"><span style=3D"font-size:11.0pt">I=92m thinking =
about radiators for my 13B Defiant.<span>=A0 </span>I=92ve noted some autom=
otive radiators integrate oil and transmission fluid cooling with the engin=
e coolant heat exchanger.<span>=A0 </span>Has anyone looked at these as a m=
eans of integrating the oil and water cooler for an aircraft application?<s=
pan>=A0 </span>Does anyone have an estimate of the oil and transmission hea=
t load in a typical GMC 4.3 L <span>=A0</span>Jimmy?<u></u><u></u></span></=
font></p>
<p class=3D"MsoNormal"><font face=3D"Calibri"><span style=3D"font-size:11.0=
pt"><u></u>=A0<u></u></span></font></p><p class=3D"MsoNormal"><font face=3D=
"Calibri"><span style=3D"font-size:11.0pt">Gordon C. Alling, Jr., PE<u></u>=
<u></u></span></font></p>
<p class=3D"MsoNormal"><font face=3D"Calibri"><span style=3D"font-size:11.0=
pt">President<u></u><u></u></span></font></p><p class=3D"MsoNormal"><b><fon=
t size=3D"5" color=3D"#0070c0" face=3D"Garamond"><span style=3D"font-size:1=
8.0pt;font-family:&quot;Garamond&quot;,&quot;serif&quot;;color:#0070c0;font=
-weight:bold">acumen</span></font></b><span> </span><b><i><font face=3D"Gar=
amond"><span style=3D"font-family:&quot;Garamond&quot;,&quot;serif&quot;;fo=
nt-weight:bold;font-style:italic">Engineering/Analysis, Inc.</span></font><=
/i></b><span><u></u><u></u></span></p>
<p class=3D"MsoNormal"><font face=3D"Calibri"><span style=3D"font-size:11.0=
pt"><u></u>=A0<u></u></span></font></p><p class=3D"MsoNormal"><font face=3D=
"Calibri"><span style=3D"font-size:11.0pt"><a href=3D"tel:540-786-2200" val=
ue=3D"+15407862200" target=3D"_blank">540-786-2200</a><u></u><u></u></span>=
</font></p>
<p class=3D"MsoNormal"><font color=3D"#00b0f0" face=3D"Calibri"><span style=
=3D"font-size:11.0pt;color:#00b0f0"><a href=3D"http://www.acumen-ea.com" ta=
rget=3D"_blank">www.acumen-ea.com</a><u></u><u></u></span></font></p><p cla=
ss=3D"MsoNormal">
<font face=3D"Calibri"><span style=3D"font-size:11.0pt"><u></u>=A0<u></u></=
span></font></p></div></div></blockquote></div>

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