Return-Path: Received: from [216.8.74.9] (HELO mail.hansoninfosys.com) by logan.com (CommuniGate Pro SMTP 4.2.8) with SMTP id 607115 for flyrotary@lancaironline.net; Fri, 14 Jan 2005 11:09:42 -0500 Received-SPF: none receiver=logan.com; client-ip=216.8.74.9; envelope-from=dvanwinkle@royell.net Received: (qmail 26907 invoked by uid 89); 14 Jan 2005 16:09:10 -0000 Received: from unknown (HELO dv) (216.8.89.122) by 0 with SMTP; 14 Jan 2005 16:09:10 -0000 Message-ID: <001301c4fa54$4a3e24c0$800010ac@royell.net> From: "Dean" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: water cooled matrix in the oil pan Date: Fri, 14 Jan 2005 10:15:39 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0010_01C4FA21.FEE37200" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1437 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 X-Antivirus: avast! (VPS 0502-3, 01/14/2005), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0010_01C4FA21.FEE37200 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageRusty The turboprop engines that I was associated with in the past (mostly = PT-6) had a fuel/oil heat exchanger that was referred to as a fuel = heater. The prime purpose was to preclude any ice particles in the fuel = from reaching the fuel control and shutting the engine down. Dean RV-9A Fus/Finish 13B ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Friday, January 14, 2005 9:15 AM Subject: [FlyRotary] Re: water cooled matrix in the oil pan Tracy once used a copper line running coolant through his oil pan, but = this was on an early version of his 13B adventures. Wasn't he running his fuel return through the pan on the way back to = the wing tanks? =20 I've thought about trying to use the fuel loop for oil/fuel heat = exchange, but I don't think you could do this full time. The problem = would be when you only have a few gallons of fuel in the tanks. I think = the fuel temp could rise faster than the skin of the tanks could cool = it. It would make an interesting experiment.=20 Another application of this fuel/oil cooling that comes to mind is for = aux cooling when needed. Say I install that small Fluidyne oil/air = cooler, and it won't allow me to use full throttle for an unlimited = climb. I could augment that with the fuel/oil exchanger for climb only. = You'd have to monitor the fuel temp and shut it down if they got too = high. Of course it also means extra hoses, and valves of some sort to = divert the return fuel. Probably more trouble than it's worth unless = you could use it full time. =20 Interestingly, a Navy helicopter instructor was telling me that the = turbine engines use an oil/fuel exchanger. I guess turbines need the = fuel to be warm, and also need a way to cool the oil. Apparently, this = does both. =20 Cheers, Rusty (don't get me started on wacky ideas) ------=_NextPart_000_0010_01C4FA21.FEE37200 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Rusty
 
The turboprop engines that I was = associated with in=20 the past (mostly PT-6) had a fuel/oil heat exchanger that was referred = to as a=20 fuel heater.  The prime purpose was to preclude any ice particles = in the=20 fuel from reaching the fuel control and shutting the engine = down.
 
Dean   RV-9A  = Fus/Finish  =20 13B
----- Original Message -----
From:=20 Russell=20 Duffy
Sent: Friday, January 14, 2005 = 9:15=20 AM
Subject: [FlyRotary] Re: water = cooled=20 matrix in the oil pan

Tracy once used a copper line running coolant = through his oil=20 pan, but this was on an early version of his 13B = adventures.

 
Wasn't = he running his=20 fuel return through the pan on the way back to the wing = tanks?  =20
 
I've = thought about=20 trying to use the fuel loop for oil/fuel heat exchange, but I don't = think you=20 could do this full time.  The problem would be when you only have = a few=20 gallons of fuel in the tanks.  I think the fuel temp could rise = faster=20 than the skin of the tanks could cool it.  It would make an = interesting=20 experiment. 
 
Another application of=20 this fuel/oil cooling that comes to mind is for aux cooling when = needed. =20 Say I install that small Fluidyne oil/air cooler, and it won't allow = me to use=20 full throttle for an unlimited climb.  I could augment that with = the=20 fuel/oil exchanger for climb only.  You'd have to monitor the = fuel temp=20 and shut it down if they got too high.  Of course it also = means=20 extra hoses, and valves of some sort to divert the return fuel.  = Probably=20 more trouble than it's worth unless you could use it full time. =20  
 
Interestingly, a Navy=20 helicopter instructor was telling me that the turbine engines use = an=20 oil/fuel exchanger.  I guess turbines need the fuel to be warm, = and also=20 need a way to cool the oil.  Apparently, this does=20 both.   
 
Cheers,
Rusty = (don't get me=20 started on wacky ideas)



------=_NextPart_000_0010_01C4FA21.FEE37200--