Return-Path: Received: from smtp802.mail.sc5.yahoo.com ([66.163.168.181] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with SMTP id 2901775 for flyrotary@lancaironline.net; Mon, 22 Dec 2003 23:37:43 -0500 Received: from unknown (HELO Davidscmptr) (dcarter11@sbcglobal.net@66.138.57.189 with login) by smtp802.mail.sc5.yahoo.com with SMTP; 23 Dec 2003 04:37:42 -0000 Message-ID: <085001c3c90e$797f0b00$6401a8c0@Davidscmptr> Reply-To: "David Carter" From: "David Carter" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: dual EWP plumbing? Date: Mon, 22 Dec 2003 22:37:29 -0600 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Rplying to John Slade's reply: I like your plan. If 1 pump fails after achieving cruise altitude (done with climbing), then you will be well within the "'Nuckols" envelope of "it isn't critical - you can complete your flight" (or do precautionary landing at a convenient place, as we were taught in the AF). I'm seriously considering 1 or 2 esp's, like you. David Carter ----- Original Message ----- From: "John Slade" To: "Rotary motors in aircraft" Sent: Monday, December 22, 2003 9:01 PM Subject: [FlyRotary] Re: dual EWP plumbing? > Message> Since there are two core outlets, two EWP's, and two inlets to the > engine, it's mighty tempting to let each > > EWP handle only one core. > Hmmm. I dunno, Rusty. My intuition (which may or may not be useful) is that > you'd be better designing for normal operation in the event of a pump > failure. Sort of follows the Nuckolls philosophy of no one component getting > in the way of finishing you're flight in comfort. Of course, the > disadvantage, is that if they're plumbed together and you get a leak, you'll > loose all you're coolant. I guess it depends on how "operational" you'd be > on one core and one pump. > > > In my usual masochistic way, I offer this idea for your abuse, or is that > the other list :-) > No that's this list. What a short memory you have! > > John Slade (accumulating turbo plumbing) >