Return-Path: <13brv3@bellsouth.net> Received: from imf19aec.mail.bellsouth.net ([205.152.59.67] verified) by logan.com (CommuniGate Pro SMTP 4.1.6) with ESMTP id 2716306 for flyrotary@lancaironline.net; Sun, 09 Nov 2003 12:32:54 -0500 Received: from rad ([68.212.11.237]) by imf19aec.mail.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with ESMTP id <20031109173222.TABT1849.imf19aec.mail.bellsouth.net@rad> for ; Sun, 9 Nov 2003 12:32:22 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Temperature Trends Date: Sun, 9 Nov 2003 11:32:25 -0600 Message-ID: <007e01c3a6e7$70e79ff0$6001a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_007F_01C3A6B5.264D2FF0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_007F_01C3A6B5.264D2FF0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Due to an oil press concern (more on that in another e-mail), I never = flew it today.=20 =20 Bad sensor I hope. =20 The 2 rad temps are somewhat interesting. First it is obvious from = the graph that the pump controller cycles to maintain temperatures, and easy = to see where I switched over to bypass the controller and run at full 12V.=20 =20 I was surprised to see the fluctuation in the temp. I was thinking the controller would work towards finding a speed that kept the temp at a = steady set point. This almost looks like it just cycles between a max, and min flow rate, rather than having a continuously variable speed. =20 =20 Also evident is how the oil cooler airflow temp is directly = affected by the rad airflow temp (they have separate ducts). =20 =20 Cool. So when you force more heat to be removed by the radiators, = there's less heat being transferred to the oil inside the engine. How much = lower was your coolant temp when the EWP's were running at max? =20 =20 I hate to ask for more, but it sure would be sweet if the EM2 has a serial data output to input into this (or any other) trendreader = program. =20 =20 I could swear that Tracy said it did have a serial output of some type. = =20 Cheers, Rusty (EM-2 payment standing by)=20 ------=_NextPart_000_007F_01C3A6B5.264D2FF0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
=20 Due to an oil press concern (more on that in another e-mail), I never = flew it=20 today. 
 
Bad sensor=20 I hope.
 
    The 2 rad temps are somewhat = interesting. First it=20 is obvious from the graph that the pump controller cycles to maintain=20 temperatures, and easy to see where I switched over to bypass the = controller and=20 run at full 12V. 
 
I was = surprised to see=20 the fluctuation in the temp.  I was thinking the = controller would=20 work towards finding a speed that kept the temp at a steady set = point. =20 This almost looks like it just cycles between a max, and min flow = rate,=20 rather than having a continuously variable speed. =20     
 
     Also evident is how the = oil cooler=20 airflow temp is directly affected by the rad airflow temp (they = have=20 separate ducts).  
 
Cool.  = So when you=20 force more heat to be removed by the radiators, there's less heat being=20 transferred to the oil inside the engine.  How much lower was your = coolant=20 temp when the EWP's were running at max? =20
 
     I hate to ask for more, = but it sure=20 would be sweet if the EM2 has a serial data output to input into this = (or any=20 other) trendreader program.  
 
I could = swear that=20 Tracy said it did have a serial output of some=20 type.  
 
Cheers,
Rusty (EM-2 = payment standing=20 by) 
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