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 5.2.2) with ESMTP id 2880826 for flyrotary@lancaironline.net; Thu, 01 May 2008 19:38:55 -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-omta05.mail.rr.com with SMTP id <20080501233818.JNOX720.cdptpa-omta05.mail.rr.com@edward2> for ; Thu, 1 May 2008 23:38:18 +0000 Message-ID: <003801c8abe4$748e11a0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: radiator orientation? Date: Thu, 1 May 2008 19:38:27 -0400 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="Windows-1252"; reply-type=original Content-Transfer-Encoding: 7bit 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 Michael, My view is that slanting a radiator does nothing better for you than one perpendicular to the air flow - except perhaps making it easier to fit a space constraint, it which case then go with a slanted radiator. A slanted radiator (that has the same air flow and same frontal area) as a perpendicular radiator is actually added going to have a bit more drag. The air flow must now make at least one (and possibly two turns) going into and out of the core channels creating turbulence and drag at those points. NOT that it is going to make a real significant difference at the airspeeds we fly. So for that reason, a slanted radiator is certainly acceptable especially to meet installation constraints. My 0.02 Ed ----- Original Message ----- From: "Michael Silvius" To: "Rotary motors in aircraft" Sent: Thursday, May 01, 2008 8:10 PM Subject: [FlyRotary] Re: radiator orientation? > Geroge: > > In the end I will likely angle them a bit but my primary concern is if it > is > ok to install these radiators in the vertical orientation. I have the > space > up and down to use them this way. The nose bowl I have seems to work well > with things set up that way. > > Michael > > > > > ----- Original Message ----- > From: "George Lendich" > To: "Rotary motors in aircraft" > Sent: Thursday, May 01, 2008 5:50 PM > Subject: [FlyRotary] Re: radiator orientation? > > >> >> > Anyonene see any issues of concern with instaling the radiators in the >> > vertical orientation as oposed to their normal orientation with the > inlets >> > and outlet on the top. These are evaporator cores from a JMC Jimmy- > Chevy >> > Blazer >> > >> > Michael in Maine >> >> Michael, >> The front adds significantly to the flat plate drag and anything you can > do >> to reduce that affects the total drag. Are you happy with the front >> width, >> could it be reduced with some angle on the rads? >> George ( down under) >> >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html >> >> > > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html >