X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from nk11p08mm-asmtp001.mac.com ([17.158.58.246] verified) by logan.com (CommuniGate Pro SMTP 6.0) with ESMTP id 5967324 for flyrotary@lancaironline.net; Tue, 25 Dec 2012 01:19:42 -0500 Received-SPF: pass receiver=logan.com; client-ip=17.158.58.246; envelope-from=steveizett@me.com MIME-version: 1.0 Content-type: multipart/alternative; boundary="Boundary_(ID_LNoTkzaNv0MXDZPXqm1wNQ)" Received: from [10.1.1.6] (58-7-170-26.dyn.iinet.net.au [58.7.170.26]) by nk11p08mm-asmtp001.mac.com (Oracle Communications Messaging Server 7u4-26.01(7.0.4.26.0) 64bit (built Jul 13 2012)) with ESMTPSA id <0MFK005H6PJOUY10@nk11p08mm-asmtp001.mac.com> for flyrotary@lancaironline.net; Tue, 25 Dec 2012 06:19:07 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.9.8327,1.0.431,0.0.0000 definitions=2012-12-25_03:2012-12-24,2012-12-25,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 suspectscore=2 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=6.0.2-1203120001 definitions=main-1212240404 From: Stephen Izett Subject: Re: [FlyRotary] Re: Cooling Duct design Date: Tue, 25 Dec 2012 14:18:59 +0800 In-reply-to: To: Rotary motors in aircraft References: Message-id: <9C772F94-7888-4314-8FFB-7938E9514584@me.com> X-Mailer: Apple Mail (2.1283) --Boundary_(ID_LNoTkzaNv0MXDZPXqm1wNQ) Content-type: text/plain; charset=windows-1252 Content-transfer-encoding: quoted-printable Hi Neil Yes we have a few Rotaries. Only really aware of the one flying. Ian in his RV7. I'm building a Glasair SuperII RG. Steve On 25/12/2012, at 12:29 PM, Neil Unger wrote: > Steve, > I am in NSW but you have quite a few rotaries flying in WA = especially to the south around bunbury. What plane are you talking? I = have a glastar with an underneath heat exchanger, but depends where you = are up to as to what you have to =93make=94 fit. Neil. > =20 > From: Stephen Izett > Sent: Tuesday, December 25, 2012 12:01 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: Cooling Duct design > =20 > Mark > =20 > What were your final dimensions: > Inlet water and oil > Exits > Exchanger sizes > =20 > Thanks > =20 > Steve Izett > =20 > =20 > On 24/12/2012, at 11:12 PM, Mark Steitle wrote: >=20 >> Hi Steve,=20 >> =20 >> Referring to the top view drawing, my guess is the majority of the = air would favor the top half of the core, starving the other half of = air. I think I would try to duplicate the long curved duct wall on both = sides, forming a trumpet shape nearest the core. On the side-view = drawing, my guess is the majority of the cooling air would pile up on = the back/downwind side. I would squeeze it down to almost nothing at = the backside. Then take some manometer readings and adjust as = appropriate.=20 >> =20 >> Be sure you have free space behind the radiator for the air to exit = the core, and adequate cowl opening(s). I had to add a cowl flap to my = Lancair, but it really helps during hot weather climb-outs. When up = into cooler air I usually close the cowl flap for reduced cooling drag. >> =20 >> Mark S. >> Lancair ES - PP 20B - 258 hrs =20 >>=20 >> On Mon, Dec 24, 2012 at 1:32 AM, Stephen Izett = wrote: >> Hi Guys >>=20 >> I'm about to construct the diffuser for the water exchanger. >> Can some of you guys with operating setups critique the design = please. >> So it consists of a K&Mish diffuser followed by a wedge. >>=20 >>=20 >>=20 >> And a happy Christmas to you all. >>=20 >> Steve Izett >> Perth Western Australia >>=20 >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html >>=20 >> =20 >=20 > =20 --Boundary_(ID_LNoTkzaNv0MXDZPXqm1wNQ) Content-type: text/html; charset=windows-1252 Content-transfer-encoding: quoted-printable Hi = Neil

Yes we have a few Rotaries.
Only = really aware of the one flying. Ian in his = RV7.

I'm building a Glasair SuperII = RG.

Steve

On = 25/12/2012, at 12:29 PM, Neil Unger wrote:

Steve,
            = I am in=20 NSW but you have quite a few rotaries flying in WA especially to the = south=20 around bunbury.  What plane are you talking?  I have a glastar = with an=20 underneath heat exchanger, but depends where you are up to as to what = you have=20 to =93make=94 fit.  Neil.
 
Sent: Tuesday, December 25, 2012 12:01 PM
Subject: [FlyRotary] Re: Cooling Duct = design
 
Mark=20
 
What were your final dimensions:
Inlet water and oil
Exits
Exchanger sizes
 
Thanks
 
Steve Izett
 
 
On 24/12/2012, at 11:12 PM, Mark Steitle wrote:

Hi Steve, =20
 
Referring to the top view drawing, my guess is the majority of = the air=20 would favor the top half of the core, starving the other half of = air.  I=20 think I would try to duplicate the long curved duct wall on both = sides,=20 forming a trumpet shape nearest the core.  On the side-view = drawing, my=20 guess is the majority of the cooling air would pile up on the = back/downwind=20 side.  I would squeeze it down to almost nothing at the = backside. =20 Then take some manometer readings and adjust as appropriate.  =
 
Be sure you have free space behind the radiator for the air to = exit the=20 core, and adequate cowl opening(s).  I had to add a cowl flap to = my=20 Lancair, but it really helps during hot weather climb-outs.  When = up into=20 cooler air I usually close the cowl flap for reduced cooling = drag.
 
Mark S.
Lancair ES - PP 20B - 258 hrs  

On Mon, Dec 24, 2012 at 1:32 AM, Stephen = Izett <steveizett@me.com> wrote:
Hi Guys

I'm about = to construct the diffuser for the=20 water exchanger.
Can some of you guys with operating setups = critique the=20 design please.
So it consists of a K&Mish diffuser followed = by a=20 wedge.



And a happy Christmas to you all.

Steve=20= Izett
Perth Western Australia

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

 
 

= --Boundary_(ID_LNoTkzaNv0MXDZPXqm1wNQ)--