Originally Posted by
doxilia
Mark,
what are the root and tip chords as well as the LE taper and span on your AutoCAD wing panel?
As far as I know the airfoil on the MB and GP plans for the T720 is unknown (or, rather, non standard). This was quite common in the day as every pilot was "tweaking" airfoils to their own taste.
David
David,
Root is 13.1", tip is 8.3", span is 65" with a 1.25" thick tip block (ie - each core is 31.25" span and has a root chord of 13.1" and a tip chord of 8.3") and TE forward sweep is 1.375" as per the notes on the plans. The airfoil is an odd one, it is almost like a sharp nosed NACA 00XX series or a combination of a NACA 630XXA and the 00XX series. Very thick, too, at close to 17%. The stab airfoil looks a lot more typical, being quite close to a NACA 63012A.
Mark