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From: "George Lendich" <lendich@aanet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-4036064@logan.com>
Subject: Re: [FlyRotary] Re: Mereidth effect: [FlyRotary] Re: Air Flow Question
Date: Thu, 24 Dec 2009 07:20:53 +1000
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I don't know where that 1.8cu" for each hp rule of thumb came from, but =
I do know that the 3 - 3.5 cu"per hp came from and for 200 hp that's 600 =
cu" - so 612cu" is good.
I thought that the inlet area was a minimum of 30% of the core surface =
area and the outlet was 1.5 - 1.7 of the inlet. Therefore opening would =
be 91sq" and exit 136.5 sq"- 154.7 sq".
Your oil inlet at 28% appears close enough.
George ( down under)
Yes;
Thanks Ed. I went out to the garage and looked at my chin scoop =
radiator.=20
It fails to conform to the shape reccomended in the article. :(
But it does cool well in ground testing so far. I leaned heavily =
toward pressure recovery from the supposed bow wake effect, and can't =
verify if I get any diffuser effect because of the slope of the cooler =
core. I know this is not optimal, but I wanted greater core area and =
less core depth so air would pass thru the core with a lower =
differential pressure.
Here is a link to my EAA Capter's site, direct to my pictures: =
http://gallery.eaa326.org/members/semery/
Constructive comments are always welcome.
I did try to keep external drag to a minimum, and have an Inlet area =
of about 52 In Sq, over a Core face area of 306 In Sq.
for a intlet / core ratio 17 % which seems small for the core.=20
The Horse Power target is 200, so the 1.8 cubic inch core volume to HP =
=3D 360 cubic inches. My core is 2" thick for 612 cubic inches. So I =
theoretically only require 59% of my existing core volume. 180 square =
inches of 2 inch thick core.
My inlet opening =3D 29% of that, so I'm close to optimum on inlet =
opening area. As I continue to test, and eventually fly, I could change =
to a smaller cooler, which could set it more 'normal' to the air flow, =
while also moving it aft allowing a longer diffuser.
The side mounted oil cooler was not a matter of choices. The Mazda =
cooler comes in one size, so does the cowl cheek opening. I just =
measured my diffuser inlet, 24.8 In Sq. The cooler face: 87.75 In Sq. =
Ratio =3D 28%. I think that's pretty good considering the airflow must =
turn 90 degrees to pass thru the core, then get sucked out thru surface =
louvers on the cowl side.
Here's hoping for the best, and trying again if it doesn't work.
-----Original Message-----
From: Thomas Mann <tmann@n200lz.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Mon, Dec 21, 2009 6:01 pm
Subject: [FlyRotary] Re: Mereidth effect: [FlyRotary] Re: Air Flow =
Question
Thanks for the links Ed.
It looks like I have some reading to do!
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] =
On Behalf Of Ed Anderson
Sent: Monday, December 21, 2009 7:19 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Mereidth effect: [FlyRotary] Re: Air Flow =
Question
Thomas, Here is probably the best, most understandable (without a lot =
of math) on the cooling challenge that I have come across. You might =
want to check it out. Here is one of the statements you will find in =
this short article
It has been shown that the diffuser efficiency is key in the reduction =
of the overall radiator drag. It is the most critical part, and =
unfortunately the most frequently botched by homebuilders.
http://contrails.free.fr/engine_aerodyn_radia_en.php
Also note his comment about how to control airflow once your intake is =
30-50% of your core area =E2=80=93 may surprise you.
http://contrails.free.fr/tunnel_en.php
Here is a summary by Meredith on the effect. There is still some =
debate about whether the P-51 cooling system actually resulted in a net =
thrust =E2=80=93 but, most agree whether it did produce significant =
thrust or not the cooling drag was probably close to an optimum minimum. =
=20
http://contrails.free.fr/refroid_meredith_en.php
You are right, there is always trade offs. You can certainly put an =
oil cooler in front of your radiator =E2=80=93 in effect you are just =
making a thick radiator as far as airflow is concerned. Obviously you =
will have hotter air flow through the part of your radiator behind the =
oil cooler so its cooling effectiveness will be reduced. Also, you may =
find that a lot of the air in their common duct may want to go through =
the other part of the radiator core =E2=80=93 due to its less air =
resistance.
Placing them side by side (or top bottom) is another approach. =
However, it is my opinion that unless your oil cooler and radiator core =
have similar air flow characteristics or great care is taken in =
designing your ducts to each, that air will take the route of least =
resistance. So one core could end up =
=E2=80=9Cbleeding=E2=80=99=E2=80=9D cooling air from the other. =
Similarly, the exit pressure of one (generally the one with the least =
air resistance) will be higher than the one with less resistance. So =
this can cause airflow problems under the cowl as well.
Its my opinion that keeping your oil and coolant cores separate (if =
possible and there are always space constraints in our vehicles) and =
also keeping their air flow separate is generally the best course of =
action to get the best cooling. But, compromises are frequently =
necessary, in which case you simply have to try and figure out the =
possible interaction and effects.
Ed
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
http://www.andersonee.com
http://www.dmack.net/mazda/index.html
http://www.flyrotary.com/
http://members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.rotaryaviation.com/Rotorhead%20Truth.htm
-------------------------------------------------------------------------=
-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] =
On Behalf Of Thomas Mann
Sent: Monday, December 21, 2009 6:17 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Air Flow Question
=E2=80=9CStick with this group, we=E2=80=99ve all been there and have =
conquered the cooling beast =E2=80=93 well, at least tamed it a bit.
Ed=E2=80=9D
That is the plan Ed.=20
I=E2=80=99m trying to figure out how much radiator I can fit into my =
configuration. I=E2=80=99m running the numbers and drafting it out in =
AutoCAD.
I=E2=80=99m hoping that I can cash in on the Meredith Effect in my =
design. I=E2=80=99m planning on an adjustable exhaust opening much like =
the P-51s had. I=E2=80=99m not sure if I need it or not but it=E2=80=99s =
easier to not use it vs. add it later.
Question: If I use a separate oil cooler, can I place it in front of =
the radiator?=20
I=E2=80=99ve seen some installations like this but it seems to me that =
there is a cost involved.
T Mann
__________ Information from ESET NOD32 Antivirus, version of virus =
signature database 3267 (20080714) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
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<DIV><FONT face=3DArial size=3D2> I don't know where that 1.8cu" =
for each hp=20
rule of thumb came from, but I do know that the 3 - 3.5 cu"per hp came =
from and=20
for 200 hp that's 600 cu" - so 612cu" is good.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I thought that the inlet area was a =
minimum of 30%=20
of the core surface area and the outlet was 1.5 - 1.7 of the inlet. =
Therefore=20
opening would be 91sq" and exit 136.5 sq"- 154.7 sq".</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Your oil inlet at 28% appears close=20
enough.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>George ( down under)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3Darial color=3Dblack size=3D2><FONT face=3Darial =
color=3Dblack=20
size=3D2>Yes;</DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
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<DIV id=3DAOLMsgPart_2_33289b15-f084-4f25-b6a9-bffa369afd23>
<DIV>Thanks Ed. I went out to the garage and looked at my chin scoop =
radiator.=20
</DIV>
<DIV>It fails to conform to the shape reccomended in the article. =
:(</DIV>
<DIV>But it does cool well in ground testing so far. I leaned heavily =
toward=20
pressure recovery from the supposed bow wake effect, and can't verify =
if I get=20
any diffuser effect because of the slope of the cooler core. I know =
this is=20
not optimal, but I wanted greater core area and less core depth so air =
would=20
pass thru the core with a lower differential pressure.</DIV>
<DIV>Here is a link to my EAA Capter's site, direct to my =
pictures: <A=20
=
href=3D"http://gallery.eaa326.org/members/semery/">http://gallery.eaa326.=
org/members/semery/</A></DIV>
<DIV>Constructive comments are always welcome.</DIV>
<DIV>I did try to keep external drag to a minimum, and have an Inlet =
area of=20
about 52 In Sq, over a Core face area of 306 In Sq.</DIV>
<DIV>for a intlet / core ratio 17 % which seems small =
for the=20
core. </DIV>
<DIV>The Horse Power target is 200, so the 1.8 cubic inch core volume =
to HP =3D=20
360 cubic inches. My core is 2" thick for 612 cubic inches. So I =
theoretically=20
only require 59% of my existing core volume. 180 square inches of 2 =
inch thick=20
core.</DIV>
<DIV>My inlet opening =3D 29% of that, so I'm close to optimum on =
inlet opening=20
area. As I continue to test, and eventually fly, I could change to a =
smaller=20
cooler, which could set it more 'normal' to the air flow, while also =
moving it=20
aft allowing a longer diffuser.</DIV>
<DIV>The side mounted oil cooler was not a matter of choices. The =
Mazda cooler=20
comes in one size, so does the cowl cheek opening. I just measured my =
diffuser=20
inlet, 24.8 In Sq. The cooler face: 87.75 In Sq. Ratio =3D 28%. I =
think that's=20
pretty good considering the airflow must turn 90 degrees to pass thru =
the=20
core, then get sucked out thru surface louvers on the cowl =
side.<BR>Here's=20
hoping for the best, and trying again if it doesn't work.</DIV>
<DIV style=3D"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: =
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<BLOCKQUOTE style=3D"PADDING-LEFT: 3px; BORDER-LEFT: blue 2px =
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style=3D"FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: =
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<DIV=20
style=3D"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: =
helvetica,arial">-----Original=20
Message-----<BR>From: Thomas Mann <tmann@n200lz.com><BR>To: =
Rotary=20
motors in aircraft <flyrotary@lancaironline.net><BR>Sent: Mon, =
Dec 21,=20
2009 6:01 pm<BR>Subject: [FlyRotary] Re: Mereidth effect: [FlyRotary] =
Re: Air=20
Flow Question<BR><BR>
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<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: =
'Calibri','sans-serif'">Thanks=20
for the links Ed.</SPAN></DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: =
'Calibri','sans-serif'">It=20
looks like I have some reading to do!</SPAN></DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: =
'Calibri','sans-serif'"></SPAN> </DIV>
<DIV class=3DMsoNormal><A name=3D_MailEndCompose><SPAN=20
style=3D"FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: =
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<DIV>
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<DIV class=3DMsoNormal><B><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
'Tahoma','sans-serif'">From:</SPAN></B><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'"> Rotary =
motors in=20
aircraft [<A=20
=
href=3D"mailto:flyrotary@lancaironline.net?">mailto:flyrotary@lancaironli=
ne.net</A>]=20
<B>On Behalf Of </B>Ed Anderson<BR><B>Sent:</B> Monday, December 21, =
2009 7:19=20
PM<BR><B>To:</B> Rotary motors in aircraft<BR><B>Subject:</B> =
[FlyRotary]=20
Mereidth effect: [FlyRotary] Re: Air Flow =
Question</SPAN></DIV></DIV></DIV>
<DIV class=3DMsoNormal> </DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN> </DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'">Thomas,=20
Here is probably the best, most understandable (without a lot of math) =
on the=20
cooling challenge that I have come across. You might want =
to check=20
it out. Here is one of the statements you will find in =
this short=20
article</SPAN></DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN> </DIV>
<DIV class=3DMsoNormal><I>It has been shown that the diffuser =
efficiency is key=20
in the reduction of the overall radiator drag. It is the most critical =
part,=20
and unfortunately the most frequently botched by =
homebuilders.</I><I><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN></I></DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN> </DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"><A=20
href=3D"http://contrails.free.fr/engine_aerodyn_radia_en.php"=20
=
target=3D_blank>http://contrails.free.fr/engine_aerodyn_radia_en.php</A><=
/SPAN></DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN> </DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'">Also=20
note his comment about how to control airflow once your intake is =
30-50% of=20
your core area =E2=80=93 may surprise you.</SPAN></DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN> </DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN> </DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"><A=20
href=3D"http://contrails.free.fr/tunnel_en.php"=20
=
target=3D_blank>http://contrails.free.fr/tunnel_en.php</A></SPAN></DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN> </DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN> </DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'">Here=20
is a summary by Meredith on the effect. There is still some =
debate about=20
whether the P-51 cooling system actually resulted in a net thrust =
=E2=80=93 but, most=20
agree whether it did produce significant thrust or not the cooling =
drag was=20
probably close to an optimum minimum. </SPAN></DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN> </DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"><A=20
href=3D"http://contrails.free.fr/refroid_meredith_en.php"=20
=
target=3D_blank>http://contrails.free.fr/refroid_meredith_en.php</A></SPA=
N></DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN> </DIV>
<DIV>
<DIV><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'">You=20
are right, there is always trade offs. You can certainly put an =
oil=20
cooler in front of your radiator =E2=80=93 in effect you are just =
making a thick=20
radiator as far as airflow is concerned. Obviously you will have =
hotter=20
air flow through the part of your radiator behind the oil cooler so =
its=20
cooling effectiveness will be reduced. Also, you may find that a =
lot of=20
the air in their common duct may want to go through the other part of =
the=20
radiator core =E2=80=93 due to its less air resistance.</SPAN></DIV>
<DIV><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'">Placing=20
them side by side (or top bottom) is another approach. However, =
it is my=20
opinion that unless your oil cooler and radiator core have similar air =
flow=20
characteristics or great care is taken in designing your ducts to =
each, that=20
air will take the route of least resistance. So one core =
could end=20
up =E2=80=9Cbleeding=E2=80=99=E2=80=9D cooling air from the =
other. Similarly, the exit pressure=20
of one (generally the one with the least air resistance) will be =
higher than=20
the one with less resistance. So this can cause airflow problems under =
the=20
cowl as well.</SPAN></DIV>
<DIV><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'">Its my=20
opinion that keeping your oil and coolant cores separate (if =
possible=20
and there are always space constraints in our vehicles) and also =
keeping their=20
air flow separate is generally the best course of action to get the =
best=20
cooling. But, compromises are frequently necessary, in which =
case you=20
simply have to try and figure out the possible interaction and=20
effects.</SPAN></DIV>
<DIV><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN> </DIV>
<DIV><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'">Ed</SPAN></DIV>
<DIV><SPAN lang=3DEN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN> </DIV>
<DIV><SPAN lang=3DEN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'">Ed=20
Anderson</SPAN></DIV>
<DIV><SPAN lang=3DEN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'">Rv-6A=20
N494BW Rotary Powered</SPAN></DIV>
<DIV><SPAN lang=3DEN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'">Matthews,=20
NC</SPAN></DIV>
<DIV><SPAN lang=3DEN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"><A=20
=
href=3D"mailto:eanderson@carolina.rr.com">eanderson@carolina.rr.com</A></=
SPAN></DIV>
<DIV><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"><A=20
href=3D"http://www.andersonee.com/" target=3D_blank><SPAN=20
lang=3DEN>http://www.andersonee.com</SPAN></A></SPAN></DIV>
<DIV><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"><A=20
href=3D"http://www.dmack.net/mazda/index.html" target=3D_blank><SPAN=20
=
lang=3DEN>http://www.dmack.net/mazda/index.html</SPAN></A></SPAN></DIV>
<DIV><SPAN lang=3DEN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"><A=20
href=3D"http://www.flyrotary.com/"=20
target=3D_blank>http://www.flyrotary.com/</A></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN></DIV>
<DIV><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"><A=20
href=3D"http://members.cox.net/rogersda/rotary/configs.htm" =
target=3D_blank><SPAN=20
=
lang=3DEN>http://members.cox.net/rogersda/rotary/configs.htm#N494BW</SPAN=
></A></SPAN></DIV>
<DIV><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"><A=20
href=3D"http://www.rotaryaviation.com/Rotorhead%20Truth.htm"=20
=
target=3D_blank>http://www.rotaryaviation.com/Rotorhead%20Truth.htm</A></=
SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN></DIV></DIV>
<DIV>
<DIV class=3DMsoNormal style=3D"TEXT-ALIGN: center" align=3Dcenter>
<HR align=3Dcenter width=3D"100%" SIZE=3D2>
</DIV>
<DIV class=3DMsoNormal><B><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
'Tahoma','sans-serif'">From:</SPAN></B><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'"> Rotary =
motors in=20
aircraft [<A=20
=
href=3D"mailto:flyrotary@lancaironline.net?">mailto:flyrotary@lancaironli=
ne.net</A>]=20
<B>On Behalf Of </B>Thomas Mann<BR><B>Sent:</B> Monday, December 21, =
2009 6:17=20
PM<BR><B>To:</B> Rotary motors in aircraft<BR><B>Subject:</B> =
[FlyRotary] Re:=20
Air Flow Question</SPAN></DIV></DIV>
<DIV class=3DMsoNormal> </DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #1f497d; FONT-FAMILY: =
'Arial','sans-serif'">=E2=80=9C</SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'">Stick=20
with this group, we=E2=80=99ve all been there and have conquered the =
cooling beast =E2=80=93=20
well, at least tamed it a bit.</SPAN></DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN> </DIV>
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'">Ed</SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #1f497d; FONT-FAMILY: =
'Arial','sans-serif'">=E2=80=9D</SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
'Arial','sans-serif'"></SPAN></DIV>
<DIV=20
style=3D"BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: =
medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 1pt; BORDER-LEFT: medium =
none; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1.5pt solid">
<DIV class=3DMsoNormal><SPAN=20
style=3D"FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: =
'Calibri','sans-serif'"></SPAN> </DIV></DIV>
<DIV class=3DMsoNormal><SPAN style=3D"COLOR: =
#1f497d"></SPAN> </DIV>
<DIV class=3DMsoNormal><SPAN style=3D"COLOR: #1f497d">That is the plan =
Ed.=20
</SPAN></DIV>
<DIV class=3DMsoNormal><SPAN style=3D"COLOR: #1f497d">I=E2=80=99m =
trying to figure out how=20
much radiator I can fit into my configuration. I=E2=80=99m running the =
numbers and=20
drafting it out in AutoCAD.</SPAN></DIV>
<DIV class=3DMsoNormal><SPAN style=3D"COLOR: =
#1f497d"></SPAN> </DIV>
<DIV class=3DMsoNormal><SPAN style=3D"COLOR: #1f497d">I=E2=80=99m =
hoping that I can cash=20
in on the Meredith Effect in my design. I=E2=80=99m planning on an =
adjustable exhaust=20
opening much like the P-51s had. I=E2=80=99m not sure if I need it or =
not but it=E2=80=99s=20
easier to not use it vs. add it later.</SPAN></DIV>
<DIV class=3DMsoNormal><SPAN style=3D"COLOR: =
#1f497d"></SPAN> </DIV>
<DIV class=3DMsoNormal><SPAN style=3D"COLOR: #1f497d">Question: If I =
use a=20
separate oil cooler, can I place it in front of the radiator? =
</SPAN></DIV>
<DIV class=3DMsoNormal><SPAN style=3D"COLOR: #1f497d">I=E2=80=99ve =
seen some installations=20
like this but it seems to me that there is a cost =
involved.</SPAN></DIV>
<DIV class=3DMsoNormal><SPAN style=3D"COLOR: =
#1f497d"></SPAN> </DIV>
<DIV class=3DMsoNormal><SPAN style=3D"COLOR: #1f497d">T =
Mann</SPAN><SPAN=20
style=3D"FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: =
'Calibri','sans-serif'"></SPAN></DIV>
<DIV class=3DMsoNormal><BR><BR>__________ Information from ESET NOD32 =
Antivirus,=20
version of virus signature database 3267 (20080714) =
__________<BR><BR>The=20
message was checked by ESET NOD32 Antivirus.<BR><BR><A=20
href=3D"http://www.eset.com/"=20
target=3D_blank>http://www.eset.com</A></DIV></DIV></DIV><!-- end of =
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