Return-Path: Received: from [208.145.81.85] (HELO mail.link77.net) by logan.com (CommuniGate Pro SMTP 4.2b6) with ESMTP-TLS id 232594 for flyrotary@lancaironline.net; Wed, 30 Jun 2004 21:46:43 -0400 Received: from [200.66.166.194] (account ralph_reed@mail.jaars.org HELO e4g1o9) by mail.link77.net (CommuniGate Pro SMTP 4.1.8) with ESMTP-TLS id 43440203 for flyrotary@lancaironline.net; Wed, 30 Jun 2004 21:45:59 -0400 Message-ID: <007e01c45f1e$2d827b00$c2a642c8@e4g1o9> From: "Ralph Reed" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Boundary Layer Date: Wed, 30 Jun 2004 20:47:43 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_007B_01C45EE3.7DDDEDE0" 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_007B_01C45EE3.7DDDEDE0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Look below to what my server added to your message!!!!!! Ralph ----- Original Message -----=20 From: Al Gietzen=20 To: Rotary motors in aircraft=20 Sent: Tuesday, June 29, 2004 6:14 PM Subject: [FlyRotary] Boundary Layer Subject: [FlyRotary] Re: Temps finally down Sounds like you are closing on the solution, Steve, = congratulations. Its always nice when you get to the point where you can fly = without one eye on the temps. The boundary layer (particularly with coolers to the rear of = an airframe) appears to play a big role. The layer increases in depth as = you go rearward and it creates havoc with the operation of cooling ducts and = diffusers. Great, Steve. Glad to hear you have that issue resolved. For anyone interested, attached is a little DOS program that = computes boundary layer thickness. Input fuselage length, distance from = nose to scoop entrance, and aircraft speed. Of course since it is an = executable program, virus filter may take out the attachment. If so, = you can send me your data, and I'll do the calc for you. I'll Zip it, = and it may should go through. Al ----WARNING----WARNING----WARNING---- Zip Files can contain harmful viruses Do NOT open the attached zip file unless you know the sender AND are expecting a zip file! Contact jarmail_admin@sil.org if you have any questions -------------------------------------- ---------------------------------------------------------------------- >> Homepage: http://www.flyrotary.com/ >> Archive: = http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_007B_01C45EE3.7DDDEDE0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Look below to what my server added to your=20 message!!!!!! Ralph
----- Original Message ----- =
From:=20 Al=20 Gietzen
To: Rotary motors in=20 aircraft
Sent: Tuesday, June 29, = 2004 6:14=20 PM
Subject: [FlyRotary] = Boundary=20 Layer

 

 

 

Subject: [FlyRotary] Re: Temps = finally=20 down

 

Sounds like you are closing on the = solution,=20 Steve, congratulations.  Its

always nice when you get to the = point where=20 you can fly without one eye on

the temps.

 

 The boundary layer = (particularly with=20 coolers to the rear of an airframe)

appears to play a big role.  = The layer=20 increases in depth as you go rearward

and it creates havoc with the = operation of=20 cooling ducts and diffusers.

 

 Great,=20 Steve. Glad to hear you have that issue = resolved.

 

 For=20 anyone interested, attached is a little DOS program that = computes=20 boundary layer thickness.  Input fuselage length, = distance from=20 nose to scoop entrance, and aircraft speed.  Of course = since it=20 is an executable program, virus filter may take out the=20 attachment.  If so, you can send me your data, and I'll = do the=20 calc for you.  I=92ll Zip it, and it may should go=20 through.

 

 

Al


----WARNING----WARNING----WARNING-= ---
Zip=20 Files can contain harmful viruses
Do NOT open the attached = zip=20 file
unless you know the sender AND are expecting a zip=20 file!
Contact jarmail_admin@sil.org if
you have any=20 questions
--------------------------------------

>>  Homepage: =20 http://www.flyrotary.com/
>>  = Archive:  =20 = http://lancaironline.net/lists/flyrotary/List.html

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