A lot of the newer F3J models on the marked today have this airfoil thrown all over their wings. It was designed in 1991 by Martin Hepperle, but not for thermal gliders. It was made for pylon racing! For this purpose it needed to be fast but also had to work at high angles of attack when banked and yanked around the corners in F5D electric pylon racing. Since MH 32 is fast, it has low drag when flying fast – gliders like this when penetrating to reach the next thermal or just penetrating to get home to Papa. When a glider is launched the angle of attack is high and the airfoil really has to work. So what is really the difference between pylon racing and thermal flight? It appears to be almost none when speaking of airfoils. Thinned versions of this airfoil have also been used on a new SAL HLG glider from FVK – www.fvk.de. If you want to know more about Martin Hepperles airfoils and thoughts check out his homepage: http://beadec1.ea.bs.dlr.de/Airfoils/index.htm