Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Tue, 08 Apr 2003 18:47:53 -0400 Message-ID: X-Original-Return-Path: Received: from rwcrmhc51.attbi.com ([204.127.198.38] verified) by logan.com (CommuniGate Pro SMTP 4.1b2) with ESMTP id 2105433 for flyrotary@lancaironline.net; Mon, 07 Apr 2003 00:32:37 -0400 Received: from rv8 (12-231-190-29.client.attbi.com[12.231.190.29]) by rwcrmhc51.attbi.com (rwcrmhc51) with SMTP id <20030407043235051005tr3ne>; Mon, 7 Apr 2003 04:32:36 +0000 X-Original-Message-ID: <12b801c2fcbe$b4090130$1dbee70c@rv8> From: "kevin lane" X-Original-To: "flyrotary" Subject: radiant cooling X-Original-Date: Sun, 6 Apr 2003 21:32:30 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_12B5_01C2FC84.06EDDE10" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_12B5_01C2FC84.06EDDE10 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I intend to put a belly scoop on my rv-8. after checking out some = snowmobiles I have been playing with the idea of mimicking their radiant = cooling. I was thinking about plumbing the belly scoop by running say = 6-8 parallel 3/8" tubes along the belly the 7' back to the scoop and = then another set for the return. obviously there would be some drag = from this configuration, but it enables me to make the scoop smaller. = how much is a good question. I don't know the math to figure this out, = yet. for looks I'd like to keep the belly radiator down to 8" x 25" x = 4", which seems to be minimal.(3 rotor, 300hp, turbo'd) since other planes don't do this, there may be a reason against = this. I would guess that wwII planes wouldn't consider it since it = makes them very vulnerable to bullets. perhaps the drag is too great, I = don't know. I remember seeing a plane with it's wing stiffeners on the = exterior, which seems crazy to me, but obviously it can work. many = planes have corrugated elevators, which seems draggy. the air on the = belly must be pretty turbulent, at least against the skin. van = certainly doesn't worry about the rudder cables and horns being exposed. what is the consensus of the group about my wacky idea? can someone = take a stab at how much heat this might radiate? another thought about = the exposed plumbing was that it would be MUCH easier to work on versus = running it under the floorboards and thru the spar and gear leg towers. = I also recognize that this plane will be a platform for many future = changes and ideas, so I prefer not to make anything too permanent at = first. C&R is quoting me $700 for a custom radiator, so I'd prefer to = buy just one! kevin Portland or ------=_NextPart_000_12B5_01C2FC84.06EDDE10 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I intend to put a belly scoop = on my=20 rv-8. after checking out some snowmobiles I have been playing with = the=20 idea of mimicking their radiant cooling. I was thinking about = plumbing the=20 belly scoop by running say 6-8 parallel 3/8" tubes along the belly the = 7' back=20 to the scoop and then another set for the return. obviously there = would be=20 some drag from this configuration, but it enables me to make the scoop=20 smaller. how much is a good question. I don't know the math = to=20 figure this out, yet. for looks I'd like to keep the belly = radiator down=20 to 8" x 25" x 4", which seems to be minimal.(3 rotor, 300hp,=20 turbo'd)

since = other planes=20 don't do this, there may be a reason against this. I would guess = that wwII=20 planes wouldn't consider it since it makes them very vulnerable to=20 bullets. perhaps the drag is too great, I don't know. I = remember=20 seeing a plane with it's wing stiffeners on the exterior, which seems = crazy to=20 me, but obviously it can work. many planes have corrugated = elevators,=20 which seems draggy. the air on the belly must be pretty turbulent, = at=20 least against the skin. van certainly doesn't worry about the = rudder=20 cables and horns being exposed.

what is = the consensus=20 of the group about my wacky idea? can someone take a stab at how = much heat=20 this might radiate? another thought about the exposed plumbing was = that it=20 would be MUCH easier to work on versus running it under the floorboards = and thru=20 the spar and gear leg towers. I also recognize that this = plane will=20 be a platform for many future changes and ideas, so I prefer not to make = anything too permanent at first. C&R is quoting me $700 for a = custom=20 radiator, so I'd prefer to buy just one! kevin = Portland=20 or

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