Return-Path: Received: from [67.20.112.52] (account marv@lancaironline.net) by logan.com (CommuniGate Pro WebUser 4.2b3) with HTTP id 90061 for lml@lancaironline.net; Tue, 25 May 2004 22:09:02 -0400 From: "Marvin Kaye" Subject: Re: [LML] Ram Air And Injector Consequences To: lml X-Mailer: CommuniGate Pro WebUser Interface v.4.2b3 Date: Tue, 25 May 2004 22:09:02 -0400 Message-ID: In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format="flowed" Content-Transfer-Encoding: 8bit Posted for "George Braly" : Scott, How do you solve all of the issues you raise ??? Get a turbo-normalizer with an intercooler. Take the nozzle air pressure from the high side of the intercooler induction air inlet. Then WOT operations always give just about the proper pressure across the nozzles. For added bonus points - - it gives you HOT air across the nozzles at the proper air pressure differential - - which makes for even better fuel vaporization and atomization. Those are only two of the several reasons why the TN - IO - 550 Bonanzas run so magnificently well - smooth and efficient. The folks who engineered it understood all of those somewhat subtle issues and got it right. The "right" way to do aircraft engines is with a turbo-supercharger and a well designed intercooler. That combination fixes a lot of altitude problems and it provides continuously variable compressor speeds to properly match the mass airflow required (without choking the compressor) - - all at absolutely minimal extraction Hp load on the engine itself. Regards, George PS : 17 hours of turbo-normalized operations in the last three days - - altitudes from 3000 MSL to 18,000 and everywhere in between - - ADH to ORL to PNE to ADH (55Kt headwind) ... headwinds on two of three legs - - average power ? 92.5% of rated 300Hp continuous in cruise. Average torque? ~ 102% of rated torque - - hottest CHT = ~ 378; TIT =~ 1505 to 1525F; and normal BSFC = ~ 0.385 lbs/hp/hr.