The ASH 31 is the second addition to my growing catalogue of scale sailplane designs. It is primarily of surface geometry and is intended as a baseline for developing your own molds and components as you see fit. It takes out some of the hard work of developing an airframe from scratch by yourself. Features include an HQ 2.5 - 12 airfoil with a 3 degree positive incidence at the wing root gradually reducing to 0 degrees at the tip. Wingspan is 4m.