Robin wrote: > One thing, everyone has used the AS 5046 at the root & the AS 5045 at the tip. > > There has been no mention of the AS 5048, Why not & what characteristics would the AS 5048 give? & what is the shape of the tip rib when using the AS5048 at the Root.
I think the stuff at http://krnet.org/as504x/ should answer these questions, including the links at the bottom such as the download, which specifies which templates you'd use under which conditions (http://krnet.org/as504x/templates.html). But the AS5048 root with AS5045 tip wing has been flown (if I remember correctly), I just forget who. As far as I'm concerned, that is the way to do it if your are building a new airplane. Most of us flying the AS5046 are only using it because our spars were already built when the new airfoil became available. The documentation above mentions that the AS5048 is not recommended from root to tip because of some uncertainly regarding stall characteritics, not to mention that efficiency would probably suffer with such a thick airfoil at the tip. Otherwise, very similar characteristics. Mark Langford, Huntsville, Alabama see KR2S project N56ML at http://home.hiwaay.net/~langford email to N56ML "at" hiwaay.net
