X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf22aec.mail.bellsouth.net ([205.152.59.70] verified) by logan.com (CommuniGate Pro SMTP 5.0.4) with ESMTP id 887603 for flyrotary@lancaironline.net; Sun, 18 Dec 2005 19:17:41 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.70; envelope-from=sladerj@bellsouth.net Received: from ibm65aec.bellsouth.net ([65.9.204.217]) by imf22aec.mail.bellsouth.net with ESMTP id <20051219001654.GAGV26439.imf22aec.mail.bellsouth.net@ibm65aec.bellsouth.net> for ; Sun, 18 Dec 2005 19:16:54 -0500 Received: from JSLADE ([65.9.204.217]) by ibm65aec.bellsouth.net with ESMTP id <20051219001656.CLPG18352.ibm65aec.bellsouth.net@JSLADE> for ; Sun, 18 Dec 2005 19:16:56 -0500 From: "John Slade" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: Heat Exchangers Date: Sun, 18 Dec 2005 19:16:55 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_024D_01C60407.9C171B40" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 This is a multi-part message in MIME format. ------=_NextPart_000_024D_01C60407.9C171B40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit However, my calculations also indicate you may have to hit as much as 150-160 MPH before your cooling is able to keep up with the heat rejection. Interesting point, Ed. Perhaps the ideal cooling system design looses ground during the initial take-off and climb phase. You'd take off on full power with temps low and back off on the throttle if you get to the max temp limit before reaching enough speed to cool the full load. Once you're up to speed, then you can cruise with minimum drag. By the way, Monty, what are you building??? Regards, John ------=_NextPart_000_024D_01C60407.9C171B40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

However, my calculations also indicate you may = have to hit=20 as much as 150-160 MPH before your cooling is able to keep up with the = heat=20 rejection.

Interesting point,=20 Ed. Perhaps the ideal cooling system design looses ground during the = initial=20 take-off and climb phase. You'd take off on full power with temps = low and=20 back off on the throttle if you get to the max temp limit before = reaching enough=20 speed to cool the full load. Once you're up to speed, then you can = cruise with=20 minimum drag.

By the = way, Monty,=20 what are you building???

Regards,

John

------=_NextPart_000_024D_01C60407.9C171B40--