Hi Mike These guys are doing really well at the Worlds so far, this could be the new glider to beat. According to the PDF document linked in your email they say that .. "The size and geometry of the extractor lower the pressure level inside the cockpit to ambient levels..." I read that as meaning the cockpit pressure is neither higher nor lower than the outside air, so probably no effect therefore on the accuracy of the flight recorder pressure altitude. ROSS _________________________________________________
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mike Borgelt Sent: Saturday, 31 July 2010 9:03 AM To: Discussion of issues relating to Soaring in Australia. Subject: Re: [Aus-soaring] Air vent When we were discussing the DG Mandl extractor air vent some time ago I think I mentioned that the best location would be on top of the fuselage in the low pressure area. It seems either somebody saw that or had the same idea. Blending the vent tangentially to the rear was always a good idea and is commonly used in engine cooling. Nice touch to add the louvre. This looks far better than the relatively crude DG vent. Might want to organise something so rain doesn't get in though. http://www.streckenflug.at/news/js_communication_2010_07.pdf Furthermore: Might be an idea to see how much suction this produces and the effect on your flight recorder pressure altitude record. Mike Borgelt Instruments - manufacturers of quality soaring instruments since 1978 phone Int'l + 61 746 355784 fax Int'l + 61 746 358796 cellphone Int'l + 61 428 355784 email: [email protected] website: www.borgeltinstruments.com _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
