X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 938034 for flyrotary@lancaironline.net; Mon, 09 May 2005 18:17:28 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=echristley@nc.rr.com Received: from [192.168.0.10] (cpe-065-187-243-074.nc.res.rr.com [65.187.243.74]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with ESMTP id j49MGeL4021543 for ; Mon, 9 May 2005 18:16:41 -0400 (EDT) Message-ID: <427FE148.8090507@nc.rr.com> Date: Mon, 09 May 2005 18:16:40 -0400 From: Ernest Christley User-Agent: Mozilla Thunderbird 1.0.2-1.3.2 (X11/20050324) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: center rotor OFF References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Symantec AntiVirus Scan Engine Russell Duffy wrote: > > OK, make me look it up :-) Apparently, they stop the valves from > opening, rather than leaving them open. I couldn't find anything that > gave details of exactly what point in the sequence they stop the > valves, so the cylinder could either be full of air (silly and > wasteful of power), empty of air (would cause vacuum that would be as > bad as the compression force), or perhaps somewhere in between. Other than friction losses, you'll get back everything you put into compressing the gas in the cylinder, Rusty. The process will be totally elastic. -- This is by far the hardest lesson about freedom. It goes against instinct, and morality, to just sit back and watch people make mistakes. We want to help them, which means control them and their decisions, but in doing so we actually hurt them (and ourselves)."