X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.121] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTP id 2784198 for flyrotary@lancaironline.net; Sun, 09 Mar 2008 12:52:30 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.121; envelope-from=eanderson@carolina.rr.com Received: from edward2 ([75.191.186.236]) by cdptpa-omta01.mail.rr.com with SMTP id <20080309165150.SOIL10595.cdptpa-omta01.mail.rr.com@edward2> for ; Sun, 9 Mar 2008 16:51:50 +0000 Message-ID: <002c01c88205$e8f46fc0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Versys was Re: [FlyRotary] Re: Incline Radiators Date: Sun, 9 Mar 2008 12:52:06 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0029_01C881E4.6191C990" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_0029_01C881E4.6191C990 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hey, Tracy, resist the urge, we want to see you at Sun & Fun with the = 20B RV-8 {:>) Ed ----- Original Message -----=20 From: Tracy Crook=20 To: Rotary motors in aircraft=20 Sent: Sunday, March 09, 2008 11:56 AM Subject: [FlyRotary] Re: Incline Radiators I'm betting that this is probably true (angle not a big factor) since = my RV-8 installation has a duct angle to rad of about 90 degrees. It = cools on the ground at power levels high enough for level flight so I'm = hopeful. As usual, the duct is everything. The duct MUST be tailored = to the angle and that tailoring gets more difficult with increasing = angles. =20 Tracy (resisting the urge to buy a Versys) On Sun, Mar 9, 2008 at 11:44 AM, Bobby J. Hughes = wrote: <> Te <> sting at NAWTF (North Austin Wind Tunnel = Facility):) last year determined the radiator angle made almost no difference = with this duct. Dennis H. and I measured the airspeed on the backside of = the core at several angles. Do not have the data handy but we observer = about a 1 mph difference across all the angles we tested. What was interesting was the airspeed deceleration in this crude NACA duct. = From entrance to the non-existent lip the airspeed dropped by 1/3. Bobby (pics for your amusement) -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_0029_01C881E4.6191C990 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hey, Tracy,  resist the urge, we want to = see you at=20 Sun & Fun with the 20B RV-8 {:>)
 
Ed
----- Original Message -----
From:=20 Tracy=20 Crook
Sent: Sunday, March 09, 2008 = 11:56=20 AM
Subject: [FlyRotary] Re: = Incline=20 Radiators

I'm betting that this is probably true (angle not a big factor) = since my=20 RV-8 installation has a duct angle to rad of about 90 degrees. It = cools=20 on the ground at power levels high enough for level flight so I'm=20 hopeful.  As usual, the duct is everything.  The duct MUST = be=20 tailored to the angle and that tailoring gets more difficult with = increasing=20 angles.  
 
Tracy (resisting the urge to buy a Versys)

On Sun, Mar 9, 2008 at 11:44 AM, Bobby J. = Hughes <bhughes@qnsi.net> wrote:
 <<DSCF0462.JPG>>

Te=20 <<DSCF0460.JPG>> sting at NAWTF (North Austin Wind = Tunnel=20 Facility):)
last year determined the radiator angle made almost = no=20 difference with
this duct. Dennis H. and I measured the airspeed = on the=20 backside of the
core at several angles. Do not have the data = handy but we=20 observer about
a 1 mph difference across all the angles we = tested.=20  What was
interesting was the airspeed deceleration in this = crude=20 NACA duct. From
entrance to the non-existent lip the airspeed = dropped by=20 1/3.

Bobby
(pics for your = amusement)


--
Homepage:=20  http://www.flyrotary.com/
Archive and UnSub: =   http://mail.lancaironline.net:81/lists/flyrotary/List.htm= l


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