Return-Path: Received: from fed1rmmtao10.cox.net ([68.230.241.29] verified) by logan.com (CommuniGate Pro SMTP 4.2b8) with ESMTP id 323444 for flyrotary@lancaironline.net; Fri, 16 Jul 2004 10:21:46 -0400 Received-SPF: error receiver=logan.com; client-ip=68.230.241.29; envelope-from=ALVentures@cox.net Received: from BigAl ([68.107.116.221]) by fed1rmmtao10.cox.net (InterMail vM.6.01.03.02 201-2131-111-104-20040324) with ESMTP id <20040716142115.IQQD21168.fed1rmmtao10.cox.net@BigAl> for ; Fri, 16 Jul 2004 10:21:15 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: New Scoop Date: Fri, 16 Jul 2004 07:21:42 -0700 Message-ID: <000001c46b40$374d7a80$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C46B05.8AEEA280" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C46B05.8AEEA280 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Subject: [FlyRotary] Re: New Scoop=20 =20 Al, Another concern about placing these heat exchangers in the wing = is what happens after shut down and the blue foam in the wing experiences = heat soak as the exchangers cool? Did you isolate the mounting from the composite? High temp resin in the close out? Just a thought. Joe Berki Limo EZ The coolers are supported on pads of "Kool-mat". There is some small = space all around for air flow. The blue foam is covered by a layer of fairly = dry mix of micro-balloon which is a good insulator; and of course the foam = is an excellent insulator, so any heat soak won't go far. Used standard = EZ-poxy. =20 The assumption is that, generally, oil temps will be fairly low in low = power ground operations, and the air temp through the cooler in natural = convection flow will be another 20-30 degrees cooler. The most heating will be = seen by the exit faring which will undoubtedly undergo some 'post-cure' during = the first few operations. There is no stress on this part, so I don't think 180F is an issue; even if there is some softening, I don't expect it to = go anywhere. The stresses are minimal in the wing root area in any case. =20 We'll see. Exciting times ahead. =20 Al =20 =20 ------=_NextPart_000_0001_01C46B05.8AEEA280 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Subject: [FlyRotary] Re: New Scoop

 

Al,
        Another = concern about placing these heat exchangers in the wing is what happens after = shut down and the blue foam in the wing experiences heat soak as the exchangers cool?  Did you isolate the mounting from the composite?  High = temp resin in the close out?  Just a thought.

Joe Berki
Limo EZ

The coolers are supported on pads = of “Kool-mat”.  There is some small space all around for air flow.  The blue foam = is covered by a layer of fairly dry mix of micro-balloon which is a good = insulator; and of course the foam is an excellent insulator, so any heat soak = won’t go far.  Used standard EZ-poxy.

 

The assumption is that, = generally, oil temps will be fairly low in low power ground operations, and the air = temp through the cooler in natural convection flow will be another 20-30 = degrees cooler.  The most heating will be seen by the exit faring which = will undoubtedly undergo some ‘post-cure’ during the first few operations.  There is no stress on this part, so I don’t = think 180F is an issue; even if there is some softening, I don’t expect it to = go anywhere.  The stresses are minimal in the wing root area in any = case.

 

We’ll see.  Exciting = times ahead.

 

Al

 

 

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