Return-Path: <13brv3@bellsouth.net> Received: from imf16aec.mail.bellsouth.net ([205.152.59.64] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2918289 for flyrotary@lancaironline.net; Mon, 05 Jan 2004 15:46:41 -0500 Received: from rad ([68.155.99.73]) by imf16aec.mail.bellsouth.net (InterMail vM.5.01.06.05 201-253-122-130-105-20030824) with ESMTP id <20040105204640.BWNE1884.imf16aec.mail.bellsouth.net@rad> for ; Mon, 5 Jan 2004 15:46:40 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: exhaust heat shield Date: Mon, 5 Jan 2004 14:46:38 -0600 Message-ID: <002f01c3d3cd$065adb80$6001a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0030_01C3D39A.BBC06B80" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0030_01C3D39A.BBC06B80 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Best bet might be a layer of thin SS; backed up with a insulating = material such as Koolmat, or a couple layers of Al foil on the cool side. For = really close to the hottest part of the exhaust; Koolmat makes a multifoil = inconel mat that should be good to close to 2000F. Of course it is expensive. Al=20 =20 Thanks for the Koolmat pointer. The inconel stuff you mentioned is good = for 2500 degrees, and (only ) costs $1.00 per square inch. Even at that price, it might be just the ticket for one engine mount tube, and a = small area of cowl next to the exhaust pipes. =20 Thanks, Rusty=20 ------=_NextPart_000_0030_01C3D39A.BBC06B80 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

Best bet might be a layer of thin SS; backed up with a = insulating material such as Koolmat, or a couple layers of Al foil on = the cool=20 side.  For really close to the hottest part of the exhaust; Koolmat = makes a=20 multifoil inconel mat that should be good to close to 2000F.  Of = course it=20 is expensive.

Al

 

Thanks for the Koolmat = pointer.  The=20 inconel stuff you mentioned is good for 2500 degrees, and (only = <g>) costs=20 $1.00 per square inch.  Even at that price, it might be just the = ticket for=20 one engine mount tube, and a small area of cowl next to the = exhaust=20 pipes. 

Thanks,
Rusty 
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