---------------------------------------------------------- Glasair-List Digest Archive --- Total Messages Posted Thu 10/26/17: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:51 AM - Re: Glasair-List Digest: 1 Msgs - 10/25/17 (Charles Raymond) ________________________________ Message 1 _____________________________________ Time: 09:51:34 AM PST US From: Charles Raymond Subject: Glasair-List: Re: Glasair-List Digest: 1 Msgs - 10/25/17 Some builders believe planes fly because of air going over the top of a win g. Research has discovered the vacuum caused by air passing over the top c reates less than 5% of the lift. The only reason for having a smooth top su rfaces is to prevent bubbling turbulence from getting under the wing. You should also have tight clearances between the ailerons, flaps, elevator and rudder. And I have caulk in most of the seams. I also tape the bottom cont rol surface gaps to have smoother air. The actual reason planes fly is air deflecting off the bottom at a near right angle to the bottom of a wing. P lanes actually hydroplane through the air displacing the aircrafts' weight in air molecules. Formula One's find dull leading edge racers to be faster than shiny..go figure When a Glasair is at cruise speed only the first thir d of the bottom of a wing is deflecting air. With that in mind one should b e careful about changing engineered wing incidence. I added a half degree to my stabilizer to avoid having drag creating down trim. When at cruise I can look aft and see that my elevator is lined up. The more down trim the more drag. If you fly a fixed trike, draw a center line on the hanger floo r and use it to align the wheel pants. Wheel pants off centered by only a d egree or so can slow you way down. My biggest increase in performance was g etting rid of a lot of weight that cause the nose to lift turning the front of the lower cowling into a battering ram and by converting to a symmetric al prop followed by scraping the factory power robbing exhaust to a NASCAR mechanic designed one that he now sells. While in the subject of exhausts, ..don't install a straight out version on a Two because the swirling exhaus t gases will deform the bottom wing panel cover. Just talked to a builder that drilled three holes in carbon with out using a dust mask and has had a cough for two years!! Charles Raymond craymondw@aol.com -----Original Message----- From: Glasair-List Digest Server Sent: Thu, Oct 26, 2017 7:26 am Subject: Glasair-List Digest: 1 Msgs - 10/25/17 * ======================== Online Versions of Today's List Digest Archive ======================== Today's complete Glasair-List Digest can also be found in either of the two Web Links listed below. The .html file includes the Digest formatted in HTML for viewing with a web browser and features Hyperlinked Indexes and Message Navigation. The .txt file includes the plain ASCII version of the Glasair-List Digest and can be viewed with a generic text editor such as Notepad or with a web browser. HTML Version: http://www.matronics.com/digest/digestview.php?Style=82701&View=htm l&Chapter 17-10-25&Archive=Glasair Text Version: http://www.matronics.com/digest/digestview.php?Style=82701&View=txt &Chapter 17-10-25&Archive=Glasair ======================== ======================= EMail Version of Today's List Digest Archive ======================== ======================= ---------------------------------------------------------- Glasair-List Digest Archive --- Total Messages Posted Wed 10/25/17: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:30 PM - On lowering wing angle of incidence (mppalmer@aol.com) ________________________________ Message 1 ______________________________ _______ Time: 07:30:09 PM PST US From: mppalmer@aol.com Subject: Glasair-List: On lowering wing angle of incidence Before we mounted our wing, I wrote to the factory asking if it would be ok ay (safe) to lower the angle of incidence. (Because we had wing extensions, and it seemed to me that, with more wing area, the wing wouldn't need to operate a t the designed AOA.) Factory said "No!" Leave it. Rats. I bet this is one change that LaVelle made to his Glasair. While it's an "easy" mod in theory (might only need to redrill holes for wi ng attach fittings), don't have the equipment anymore to hoist everything in the air to do the job. Mike Palmer <>< ======================= I vaguely recall reading a while ago about a Glasair III builder changing t he angle of incidence of the wing for better performance. A lower angle of incidence might result in less trim drag at higher speeds. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message glasair-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Glasair-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/glasair-list Browse Digests http://www.matronics.com/digest/glasair-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.