From: "Steven W. Boese SBoese@uwyo.edu" <flyrotary@lancaironline.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Using Fluidyne oil coolers as Primary Radiator
Thread-Topic: [FlyRotary] Re: Using Fluidyne oil coolers as Primary Radiator
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Date: Wed, 1 Aug 2018 15:27:20 +0000
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Jeff,

Climb can be maintained at 23" MAP, 13 gal/hr fuel flow.  This power settin=
g has been limited by the 7300 ft field elevation.  The inlet TAS is about =
20 Kt greater than the airframe TAS with this difference decreasing to abou=
t 10 Kt at 140 Kt airframe TAS.

Steve Boese

________________________________
From: Rotary motors in aircraft <flyrotary@lancaironline.net> on behalf of =
Jeff Whaley jwhaley@datacast.com <flyrotary@lancaironline.net>
Sent: Wednesday, August 1, 2018 6:03:38 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Using Fluidyne oil coolers as Primary Radiator

Steve, the 60 kt sustained climb sounds encouraging.  What is your power se=
tting for a 60 kt (69 mph) sustained climb?
Jeff


Jeff,

The air enters the wide end of the Vee.  The location of the inlet is far e=
nough from the center of the prop that the velocity of the air entering the=
 duct is always greater than the airframe TAS.  Slow flight and climbs at ~=
60 Kt can be maintained indefinitely although I don't like to do this becau=
se of the high deck angle.

Steve

-----Original Message-----
From: Jeff Whaley
Sent: July-31-18 2:58 PM
To: 'Rotary motors in aircraft'
Subject: RE: Using Fluidyne oil coolers as Primary Radiator

Charlie: Yeah my drawing isn't too good -- done free-hand with a mouse in "=
paint" ...
Kelly: That is a great looking rad and hose options kit from Rywire ...
Steve: I remember your write-up on the Vee belly radiator and scoop but not=
 sure if your air is entering at the wide end of Vee (I think yes because o=
f hose connectors visible) ... I'm thinking of similar except under the cow=
ling.  I don't have a metal under-belly for attachment nor the airspeed of =
your RV, so with the same setup your machine would have 1.5 - 1.7 times the=
 cooling capacity.  Like WWII fighters with V12 liquid-cooled engines, it a=
ppears that efficient cooling relies on airspeed as much as anything else.
Jeff


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<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
>
<style type=3D"text/css" style=3D"display:none;"><!-- P {margin-top:0;margi=
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<body dir=3D"ltr">
<div id=3D"divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font=
-family:Calibri,Helvetica,sans-serif;" dir=3D"ltr">
<p style=3D"margin-top:0;margin-bottom:0">Jeff,</p>
<p style=3D"margin-top:0;margin-bottom:0">Climb can be maintained at 23&quo=
t; MAP, 13 gal/hr fuel flow.&nbsp; This power setting has been limited by t=
he 7300 ft field elevation.&nbsp; The inlet TAS is about 20 Kt greater than=
 the airframe TAS with this difference decreasing
 to about 10 Kt at 140 Kt airframe TAS.</p>
<p style=3D"margin-top:0;margin-bottom:0">Steve Boese</p>
</div>
<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st=
yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Rotary motors in airc=
raft &lt;flyrotary@lancaironline.net&gt; on behalf of Jeff Whaley jwhaley@d=
atacast.com &lt;flyrotary@lancaironline.net&gt;<br>
<b>Sent:</b> Wednesday, August 1, 2018 6:03:38 AM<br>
<b>To:</b> Rotary motors in aircraft<br>
<b>Subject:</b> [FlyRotary] Re: Using Fluidyne oil coolers as Primary Radia=
tor</font>
<div>&nbsp;</div>
</div>
<div class=3D"BodyFragment"><font size=3D"2"><span style=3D"font-size:11pt;=
">
<div class=3D"PlainText">Steve, the 60 kt sustained climb sounds encouragin=
g.&nbsp; What is your power setting for a 60 kt (69 mph) sustained climb?<b=
r>
Jeff<br>
<br>
<br>
<br>
Jeff,<br>
<br>
The air enters the wide end of the Vee.&nbsp; The location of the inlet is =
far enough from the center of the prop that the velocity of the air enterin=
g the duct is always greater than the airframe TAS.&nbsp; Slow flight and c=
limbs at ~60 Kt can be maintained indefinitely
 although I don't like to do this because of the high deck angle.<br>
<br>
Steve<br>
<br>
-----Original Message-----<br>
From: Jeff Whaley <br>
Sent: July-31-18 2:58 PM<br>
To: 'Rotary motors in aircraft'<br>
Subject: RE: Using Fluidyne oil coolers as Primary Radiator<br>
<br>
Charlie: Yeah my drawing isn't too good -- done free-hand with a mouse in &=
quot;paint&quot; ...<br>
Kelly: That is a great looking rad and hose options kit from Rywire ...<br>
Steve: I remember your write-up on the Vee belly radiator and scoop but not=
 sure if your air is entering at the wide end of Vee (I think yes because o=
f hose connectors visible) ... I'm thinking of similar except under the cow=
ling.&nbsp; I don't have a metal under-belly
 for attachment nor the airspeed of your RV, so with the same setup your ma=
chine would have 1.5 - 1.7 times the cooling capacity.&nbsp; Like WWII figh=
ters with V12 liquid-cooled engines, it appears that efficient cooling reli=
es on airspeed as much as anything else.<br>
Jeff<br>
<br>
<br>
<br>
<br>
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