X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao104.cox.net ([68.230.241.42] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3876390 for flyrotary@lancaironline.net; Tue, 06 Oct 2009 11:24:38 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.42; envelope-from=alventures@cox.net Received: from fed1rmimpo02.cox.net ([70.169.32.72]) by fed1rmmtao104.cox.net (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20091006152402.MWXF14181.fed1rmmtao104.cox.net@fed1rmimpo02.cox.net> for ; Tue, 6 Oct 2009 11:24:02 -0400 Received: from BigAl ([72.192.133.78]) by fed1rmimpo02.cox.net with bizsmtp id pTQ11c00H1hf1Cg04TQ1vw; Tue, 06 Oct 2009 11:24:01 -0400 X-VR-Score: 0.00 X-Authority-Analysis: v=1.0 c=1 a=Ia-xEzejAAAA:8 a=xihYr-D7np3dEYngLDwA:9 a=dPh5k5aSv35j_iNmo4AA:7 a=OQrqc9yJaBRMMUoBZ91bpHpH9qkA:4 a=EzXvWhQp4_cA:10 a=BK6ca6GI-YcTlJ-o:21 a=qKIkibU-z0ngE8Rh:21 a=oU6dCq2sE3oM2vlFKTwA:9 a=rG72f49CqFY3XtwihKAA:7 a=rJiV_kuUvK3dIzdP8rrNiIzAd5IA:4 a=AlUu5CJ7B0_j4ELl:21 a=UAuDI0kX_BNMedzy:21 X-CM-Score: 0.00 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Fuel System Date: Tue, 6 Oct 2009 08:24:17 -0800 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0035_01CA465E.654D10E0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6838 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Thread-Index: AcpGFK2kqAxqAQJERR6yUOnZxMt4/AAimnwg Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_0035_01CA465E.654D10E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Steve; =20 Basically looks OK to me with the following comments: Although not shown, I assume you have a vent system for the main tanks = and sump. I=92d hesitate to have anything but a relatively course screen filter = anywhere ahead of pumps. Restriction on the suction side of a pump is a vapor = lock issue. I assume you have sump drains on main tanks and sump tank. Take the exit from the sump tank from somewhere above the bottom. Leave = a quart or so of volume at the bottom to collect any water or debris which will then drain out the sump drain. You can then eliminate the filters ahead of the high pressure pumps. What is the purpose of the return line from sump to main tank? With an 8 = ga sump tank there should be no real concern about recirc to the sump. Locate the HP pumps below the level of the sump exit so there is gravity feed to the pumps.=20 =20 My return from the fuel rail goes to a sump tank of about 2 =BE ga = (cabin side of firewall, behind a =91vanity=92 bulkhead). During flight test phase = I would occasionally check the temp of the sump. Never noted anything more than slightly warm to the touch.=20 =20 Al G (Velocity 20B, 155 hours) =20 =20 -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of stevei@carey.asn.au Sent: Monday, October 05, 2009 3:35 PM To: Rotary motors in aircraft Subject: [FlyRotary] Fuel System =20 Hi All We are trying to make a decision re: fuel system. I=92ve attached a PDF with design and questions etc. Could you please pull it to pieces, make recommendations? Steve Thomas can you comment also from the GSIIRG perspective? Thanks=20 Steve Izett Perth Western Australia Building Glasair SIIRG Renesis 4 Port RD1C EC2 EM3=20 _____ =20 The contents of this email are confidential and intended only for the = named recipients of this e-mail. If you have received this e-mail in error, = you are hereby notified that any use, reproduction, disclosure or = distribution or the information contained in this e-mail is prohibited. Please notify = the sender immediately and then delete/destroy the e-mail and any printed copies. All liability for viruses is excluded to the fullest extent of = the law. ------=_NextPart_000_0035_01CA465E.654D10E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Fuel System

Steve;

 

Basically looks OK to me with the following comments:

Although not shown, I assume you = have a vent system for the main tanks and sump.

I’d hesitate to have = anything but a relatively course screen filter anywhere ahead of pumps.=A0 = Restriction on the suction side of a pump is a vapor lock issue.

I assume you have sump drains on = main tanks and sump tank.

Take the exit from the sump tank = from somewhere above the bottom. =A0Leave a quart or so of volume at the = bottom to collect any water or debris which will then drain out the sump drain.=A0 You can = then eliminate the filters ahead of the high pressure = pumps.

What is the purpose of the return = line from sump to main tank? With an 8 ga sump tank there should be no real = concern about recirc to the sump.

Locate the HP pumps below the = level of the sump exit so there is gravity feed to the pumps.

 

My return from the fuel rail goes = to a sump tank of about 2 =BE ga (cabin side of firewall, behind a = ‘vanity’ bulkhead).=A0 During flight test phase I would occasionally check the = temp of the sump. =A0Never noted anything more than slightly warm to the touch. =

 

Al G (Velocity 20B, 155 = hours)

 

 

-----Original = Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of stevei@carey.asn.au
Sent: Monday, October 05, 2009 3:35 = PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Fuel = System

 

Hi All

We are trying to make a decision re: fuel system.
I’ve attached a PDF with design and questions etc.
Could you please pull it to pieces, make recommendations?
Steve Thomas can you comment also from the GSIIRG perspective?

Thanks

Steve Izett
Perth Western Australia
Building Glasair SIIRG Renesis 4 Port RD1C EC2 EM3

The contents of = this email are confidential and intended only for the named recipients of this = e-mail. If you have received this e-mail in error, you are hereby notified that any = use, reproduction, disclosure or distribution or the information contained in = this e-mail is prohibited. Please notify the sender immediately and then delete/destroy the e-mail and any printed copies. All liability for = viruses is excluded to the fullest extent of the law.

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