Can you limit the max speed by prop pitch and still retain phenoninal climb characteristics with lots of hp?
> 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 > > > _______________________________________ > 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 >
