Return-Path: Received: from [161.88.255.139] (account marv@lancaironline.net) by logan.com (CommuniGate Pro WebUser 5.0.1) with HTTP id 826692 for lml@lancaironline.net; Thu, 10 Nov 2005 16:30:58 -0500 From: "Marvin Kaye" Subject: Re: [LML] Re: OAT probe location To: lml X-Mailer: CommuniGate Pro WebUser v5.0.1 Date: Thu, 10 Nov 2005 16:30:58 -0500 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 "Chuck Jensen" : On the RVList it was reported (and confirmed by calculation) that if the probe is put in a ram air location, the heat of compression at 200 mph is something like 2-3 degrees, so it will be warmer than ambient. A venture would affect it the same but in the opposite direction. A low pressure area will have a lower temp than ambient (which is why carburetors ice up at 50F. Wind chill won't come into play. An absolute temperature of 40F is still 40F whether the air is calm or it is 150 mph. Now, if you talking about taking your coat off in a blizzard, then wind chill (the rate at which you cool) will certainly come into play. So wind chill is just a calculation (based on wind speed and humidity) of how fast an object will cool off, but this doesn't apply to the OAT sensor. Chuck Do Not Archive [ your sig is ignored by my list processor, if you would like a message removed from the archive, send me (rob@logan.com) or marv a message directly with your request -Rob ]