Ameet: Thanks for setting me straight on the terminology. What I used for wing area is exactly what you sdescribe as I used 36 inches x 94 inches for the outbboard wings on mine to run through the theoretical stall speed calcs to arrive at max allowable gross for the 51 mph stallof 887# for my bird.
I am depending on engine & Prop choice as well as the drag of the Tri-gear to get the speed under the 138 mph limit. I would of course love the "Pocket Rocket" status afforded by some of the larger engine sizes. Don Ameet Savant wrote: > Eric - The airfoil and hence the curvature neither the > thickness of it has any bearing on the wing area for > aerodynamic calculations. In other words, simply > calculate the area of the polygon traced by the wing > to get the wing area. > > Don - MAC is a weighted average of all cord lengths on > a semi-span. This is useful for simplifing aerodynamic > calculations on a tapered wing. MAC is same as chord > on a rectangular wing. > > Ameet Savant > Omaha, NE > > --- D F Lively <[email protected]> wrote: > > > Eric: > > > > I can be wrong on this but I think that is whaht is > > ment by the MACwhich is the > > lingthof the line 1l2 way between the upper and > > lower surface which would be > > slightly longer. I would not worry about the > > theoretical benifits of that > > though because as a practical mater there are > > probably enough imperfections > > elsewhere to eat up what little is gained by > > cosidering the difference. > > > > Don > > > > > ---------------------------------------------------------------- > > > > Eric Anderson wrote: > > > > > I read somewhere that the square footage of a wing > > is what you would get if > > > if you stripped the upper surface off and laid it > > out flat. So it is always > > > a little more than the chord x span. > > > > > > -Eric in Mpls > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to [email protected] > please see other KRnet info at http://www.krnet.org/info.html
