---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Mon 08/21/23: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:37 AM - Re: Cabin fresh air exhaust (Area-51) ________________________________ Message 1 _____________________________________ Time: 07:37:07 AM PST US Subject: Europa-List: Re: Cabin fresh air exhaust From: "Area-51" Its a good question and something that has had a bit of a study in various scenarios, yet not anything that in depth. The attached image provides some indication however the free stream through the cabin is fairly slow, and its folding over and back upon itself constantly. There is no discernible difference in actual ambient pressure to that which is external being detected. Most of the ingress comes from the side vents and center control cutouts. In standard trim, on the Classic, the air then finds its way down through the fuel tap well, under the tank and then rearward out through the Hstab slots and rudder cable tubes. If the original Classic rail wheel port is still available the air exits through there as well. At this stage its unclear whether or not the flap bar slots are acting as ingress or egress. I am suspecting the former due to the positioning of the engine tail pipe on 181 and the noticeable headaches developing after longer back to back flights over more than two days. So my CO detector needs to be switched on now that the door seals are working affectively. Based upon the trajectory and velocity of external free stream air I would expect absent door seals to allow air to flow out more rather than in, and I could be totally wrong also. A reverse naca vent would assist interior flow velocity somewhat as would some way for cabin air to traverse the D panel; this would probably have the most affect on uniform airflow through the cabin in flight. Its a subject that requires more time. That's all I can offer right now, bit busy with other stuff for a bit. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=511309#511309 Attachments: http://forums.matronics.com//files/81558c87_e40c_498a_a3da_b72e26dcb05b_933.jpeg ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/europa-list Browse Digests http://www.matronics.com/digest/europa-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.