Return-Path: Received: from fed1mtao05.cox.net ([68.6.19.126] verified) by logan.com (CommuniGate Pro SMTP 4.1) with ESMTP id 2510245 for flyrotary@lancaironline.net; Sun, 03 Aug 2003 11:45:02 -0400 Received: from BigAl ([68.107.116.221]) by fed1mtao05.cox.net (InterMail vM.5.01.04.05 201-253-122-122-105-20011231) with ESMTP id <20030803154500.USET23215.fed1mtao05.cox.net@BigAl> for ; Sun, 3 Aug 2003 11:45:00 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Cooling? Date: Sun, 3 Aug 2003 08:45:07 -0700 Message-ID: <000a01c359d6$373c7bd0$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000B_01C3599B.8ADDA3D0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4024 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_000B_01C3599B.8ADDA3D0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Ed and all, What is the ratio of air-outlet area to air-inlet area on your plane? I have read/heard it should be ~1.3x inlet area for ground and high power output situations. TJ<>< The ratio should be more like 1.6 to 1.8. Do the math - air expands directly proportional to temp - so in at about 80 F and out at about, say, 130 to 140; gives a ratio of 1.7. Al ------=_NextPart_000_000B_01C3599B.8ADDA3D0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Ed and all,

What is the ratio of air-outlet area to air-inlet area on your plane? = I

have read/heard it should be ~1.3x inlet area for ground and high = power

output situations.

TJ<><

The ratio should be more like 1.6 to 1.8. Do = the math – air expands directly proportional to temp – so in at about 80 F = and out at about, say, 130 to 140; gives a ratio of 1.7.

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