Return-Path: Received: from seraph2.grc.nasa.gov ([128.156.10.11] verified) by logan.com (CommuniGate Pro SMTP 4.2b8) with ESMTP id 322065 for flyrotary@lancaironline.net; Thu, 15 Jul 2004 05:58:44 -0400 Received-SPF: pass receiver=logan.com; client-ip=128.156.10.11; envelope-from=Joseph.M.Berki@grc.nasa.gov Received: from lombok-fi.grc.nasa.gov (lombok-fi.grc.nasa.gov [139.88.112.33]) by seraph2.grc.nasa.gov (Postfix) with ESMTP id 56FB668997 for ; Thu, 15 Jul 2004 05:58:13 -0400 (EDT) Received: from manihi.grc.nasa.gov (manihi.grc.nasa.gov [139.88.112.36]) by lombok-fi.grc.nasa.gov (NASA GRC TCPD 8.12.10/8.12.10) with ESMTP id i6F9wCIM013723 for ; Thu, 15 Jul 2004 05:58:12 -0400 (EDT) Received: from GR7700013583.lerc.nasa.gov (gr7700013583.grc.nasa.gov [139.88.139.62]) by manihi.grc.nasa.gov (NASA GRC TCPD 8.12.10/8.12.10) with ESMTP id i6F9wC8W025736 for ; Thu, 15 Jul 2004 05:58:12 -0400 (EDT) X-Info: ODIN / NASA Glenn Research Center Message-Id: <5.1.1.5.2.20040715055352.017684b0@popserve.lerc.nasa.gov> X-Sender: scberki@popserve.lerc.nasa.gov X-Mailer: QUALCOMM Windows Eudora Version 5.1.1 Date: Thu, 15 Jul 2004 05:58:07 -0400 To: "Rotary motors in aircraft" From: Joseph M Berki Subject: Re: [FlyRotary] Re: New Scoop In-Reply-To: Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="=====================_61921671==.ALT" --=====================_61921671==.ALT Content-Type: text/plain; charset="us-ascii"; format=flowed Al, Thank you for posting the pics of the wing with oil cooler and rad. I am running out of space to place an oil cooler without making a draggy installation. Did you do any type of flow testing maybe on another Velocity to determine where to put the inlet in the wing? Did you do the installation during the build of the wing or was it done after the wing was completed? Thanks for any help. Joe Berki Limo EZ strakes At 10:49 PM 7/14/2004 -0700, you (Al Gietzen) wrote: >Subject: [FlyRotary] Re: New Scoop > > > >Al, > Do you have any photos of your oil cooler install showing the > airflow path? > >Joe Berki >Limo EZ > >My oil cooler is in the wing root. The intake is on the bottom just >behind the spar, and the exit is out the top further back. It matches a >coolant rad in the other wing. > >The first pic show the oil cooler. The second is the inlet scoop - not >really a scoop, just an airfoil lip that extends down into the air flow >about 1/2 . The third pic shows the rough ducting (early version of exit >fairing) for the coolant rad; the oil cooler is similar, and the fourth >pic shows the exit fairing. The flow through this cooler (and the wing >root rad) is enhanced by the normal pressure difference between the bottom >and top of the wing. At this position of the wing the difference should >be higher at higher angle of attack. > > > >Al > > > > > >> Homepage: http://www.flyrotary.com/ > >> Archive: http://lancaironline.net/lists/flyrotary/List.html --=====================_61921671==.ALT Content-Type: text/html; charset="us-ascii" Al,
Thank you for posting the pics of the wing with oil cooler and rad. I am running out of space to place an oil cooler without making a draggy installation. Did you do any type of flow testing maybe on another Velocity to determine where to put the inlet in the wing? Did you do the installation during the build of the wing or was it done after the wing was completed? Thanks for any help.

Joe Berki
Limo EZ
strakes

At 10:49 PM 7/14/2004 -0700, you (Al Gietzen) wrote:

Subject: [FlyRotary] Re: New Scoop

Al,
Do you have any photos of your oil cooler install showing the airflow path?

Joe Berki
Limo EZ

My oil cooler is in the wing root. The intake is on the bottom just behind the spar, and the exit is out the top further back. It matches a coolant rad in the other wing.

The first pic show the oil cooler. The second is the inlet scoop - not really a scoop, just an airfoil lip that extends down into the air flow about 1/2 . The third pic shows the rough ducting (early version of exit fairing) for the coolant rad; the oil cooler is similar, and the fourth pic shows the exit fairing. The flow through this cooler (and the wing root rad) is enhanced by the normal pressure difference between the bottom and top of the wing. At this position of the wing the difference should be higher at higher angle of attack.

Al

>> Homepage: http://www.flyrotary.com/
>> Archive: http://lancaironline.net/lists/flyrotary/List.html

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