Return-Path: <13brv3@bellsouth.net> Received: from imf22aec.mail.bellsouth.net ([205.152.59.70] verified) by logan.com (CommuniGate Pro SMTP 4.1.5) with ESMTP id 2638182 for flyrotary@lancaironline.net; Wed, 15 Oct 2003 15:39:52 -0400 Received: from rad ([68.212.14.231]) by imf22aec.mail.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with ESMTP id <20031015193947.OVZP1828.imf22aec.mail.bellsouth.net@rad> for ; Wed, 15 Oct 2003 15:39:47 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: EWP - series pumps and wacky ideas Date: Wed, 15 Oct 2003 14:39:47 -0500 Message-ID: <000001c39354$1780aa70$6001a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C3932A.2EAAA270" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C3932A.2EAAA270 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit But external events (surging alternator maybe?) could have some impact too, and having the second pump shut off could conceivably help isolate it from faults. Taking the surging alternator case, hypothetically, and assuming a crobwar OV module wasn't installed or is malfunctioning, one could still disable the alternator and then turn on the second pump even if the first was damaged. I prefer the isolation this provides, at the expense of additional pilot workload during an emergency. Regards, Chad That's certainly a valid point, but the fact is that there's no perfect system. At some point, you just have to decide what you're comfortable with. Cheers, Rusty (now if I only had a second engine...) ------=_NextPart_000_0001_01C3932A.2EAAA270 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

But external events (surging alternator maybe?) could = have some=20 impact too, and having the second pump shut off could conceivably help = isolate=20 it from faults. Taking the surging alternator case, hypothetically, and = assuming=20 a crobwar OV module wasn't installed or is malfunctioning, one could = still=20 disable the alternator and then turn on the second pump even if the = first was=20 damaged. I prefer the isolation this provides, at the expense of = additional=20 pilot workload during an emergency.

Regards,
Chad

That's = certainly=20 a valid point, but the fact is that there's no perfect=20 system.  At some point, you just have to decide what you're=20 comfortable with.
 
Cheers,
Rusty = (now if I only had=20 a second engine...)

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