X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qmta04.westchester.pa.mail.comcast.net ([76.96.62.40] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTP id 6092380 for flyrotary@lancaironline.net; Sat, 02 Mar 2013 14:42:02 -0500 Received-SPF: none receiver=logan.com; client-ip=76.96.62.40; envelope-from=gordon@acumen-ea.com Received: from omta12.westchester.pa.mail.comcast.net ([76.96.62.44]) by qmta04.westchester.pa.mail.comcast.net with comcast id 6iH71l0020xGWP854jhTDw; Sat, 02 Mar 2013 19:41:27 +0000 Received: from HPElitebook ([76.123.51.236]) by omta12.westchester.pa.mail.comcast.net with comcast id 6jhS1l00t55mGuc3YjhT6g; Sat, 02 Mar 2013 19:41:27 +0000 From: "Gordon Alling" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: P-51 type belly scoops Date: Sat, 2 Mar 2013 14:41:21 -0500 Message-ID: <007e01ce177d$eae5c280$c0b14780$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_007F_01CE1754.020FBA80" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Ac4Xc72akb5yKr4LTx+gaL3e//qwCQACguhw Content-Language: en-us DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=q20121106; t=1362253287; bh=jzTlqMavEhgW9f9bMADl2coOPhWaQ02sZgyHLgAA4s8=; h=Received:Received:From:To:Subject:Date:Message-ID:MIME-Version: Content-Type; b=A8hR+i2vCvSE+34cV7D26LK7PpcFAdbv9i3g2QKoPkmaX1efqOMH7YW7f8hC4AESW H5QGLU5Ryh8CAqm3a1KhflKrdJX4SnLqI79r+6LxOmIDoqjnTDHqaKL7vGPio39/pG i7fo0f16Rgd75Q8wLclKvDTsvgYIasyj2CNMj5yt1USZcM5snLVd5N7ZKmwUxIdED0 nAvh5tULclMva2jXBqNYKeeXJ+4X5WZzitTWZpw0KRTq/BaJkZUAMyQ0oQuWnNZMcL IsPcarFO7ONyDJwIEbxGpfkUx/H+rm5LKqtWfKODpTCc8zReP0KHgMsRuSVQckKJZt abQChLztk1Qbw== This is a multi-part message in MIME format. ------=_NextPart_000_007F_01CE1754.020FBA80 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Where can we get a copy of the original P-51 plans? Gordon C. Alling, Jr., PE President acumen Engineering/Analysis, Inc. 540-786-2200 www.acumen-ea.com From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Thomas Mann Sent: Saturday, March 02, 2013 1:29 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: P-51 type belly scoops The P-51 Scoop is how I plan on cooling my 20B (Long-EZ) I scaled down the drawings of the original P-51 plans in Auto CAD and fit it into my plan drawing and it looks as though it will make for a nice compact design. The original P-51 design splits the airfow sending a portion to the oil cooler and the rest to the radiator. Both have a controlable exhaust door to meter the airflow leaving the unit. The original P-51 has no thermostat. Temperature is regulated by the position of the exhaust door. On takeoff and landing the doors are wide open. The rest of the time they are automatically controlled to regulate the temperatures. I'm just about to the point where I will be flipping my bird on it's back in order to install the cooling system. The P-51 design (if done correctly) can create enough thrust to cancel out 90% of the drag caused by the scoop. ------=_NextPart_000_007F_01CE1754.020FBA80 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Where can we get a copy of the original P-51 = plans?

Gordon C. Alling, Jr., PE

President

a= cumen E= ngineering/Analysis, Inc.

540-786-2200

www.acumen-ea.com

From:= = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On = Behalf Of Thomas Mann
Sent: Saturday, March 02, 2013 1:29 = PM
To: Rotary motors in aircraft
Subject: = [FlyRotary] Re: P-51 type belly scoops

The = P-51 Scoop is how I plan on cooling my 20B (Long-EZ) =

I = scaled down the drawings of the original P-51 plans in Auto CAD and fit = it into my plan drawing and it looks as though it will make for a nice = compact design.

The original P-51 design splits the airfow sending a = portion to the oil cooler and the rest to the radiator. Both have a = controlable exhaust door to meter the airflow leaving the unit. =

The original P-51 has no thermostat. Temperature is = regulated by the position of the exhaust door. On takeoff and landing = the doors are wide open. The rest of the time they are automatically = controlled to regulate the temperatures.

I'm just about to the point where I will be flipping = my bird on it's back in order to install the cooling = system.

The P-51 design (if done correctly) can create enough = thrust to cancel out 90% of the drag caused by the = scoop.

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