At least three different winglet designs have been produced for the ASW-20, including a NASA winglet fitted to the Centrair gliders (FP), a design by Peter Masak, and a second generation winglet designed by Prof. Mark D. Maughmer of Penn State University (USA).
August Schleicher | Schleicher's fable | Schleicher Ka 6 | Schleicher ASW 24 | Schleicher ASK 21 | Schleicher K 8 | Régis Schleicher | Alexander Schleicher |