Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Wed, 22 Dec 2004 12:30:34 -0500 Message-ID: X-Original-Return-Path: Received: from lora.pns.networktel.net ([216.83.236.238] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP-TLS id 576728 for lml@lancaironline.net; Wed, 22 Dec 2004 10:40:09 -0500 Received-SPF: none receiver=logan.com; client-ip=216.83.236.238; envelope-from=walter@advancedpilot.com Received: from [10.0.1.3] (216-107-97-170.wan.networktel.net [216.107.97.170]) by lora.pns.networktel.net (8.12.11/8.12.11) with ESMTP id iBMFfaIk006830; Wed, 22 Dec 2004 15:41:36 GMT (envelope-from walter@advancedpilot.com) In-Reply-To: References: Mime-Version: 1.0 (Apple Message framework v619) Content-Type: text/plain; charset=US-ASCII; format=flowed X-Original-Message-Id: Content-Transfer-Encoding: 7bit From: Walter Atkinson Subject: Re: [LML] Re: airspeed vs. power X-Original-Date: Wed, 22 Dec 2004 09:39:35 -0600 X-Original-To: "Lancair Mailing List" X-Mailer: Apple Mail (2.619) X-AntiVirus: checked by Vexira Milter 1.0.6; VAE 6.29.0.5; VDF 6.29.0.28 Gary: ** Since the engine is "efficient" and the BSFC is relatively flat when running LOP there have been people that say just to multiply fuel flow times a constant to get horsepower. That is probably accurate enough for our purposes. Maybe someone has some accurate friction horsepower numbers for these engines.** Using FF LOP works accurately because it uses the BSFC for the engine as a starting point in the calculations. The BSFC takes frictional loses into account. Walter