AERODYNAMIC DESIGN OF THE STANDARD CLASS SAILPLANE ASW-24

Abstract

The ASW-24 is a new high performance glider for the FAI Standard Class, built by Alexander Schleicher Segelflugzeugbau, Germany. It is the successor of the ASW-19, which was built by Schleicher for more than 10 years. With the exception of some fittings, the ASW-24 is a complete new design of all components. This applies to the aerodynamic shape as well as to the materials used. Wing, fuselage and tailplane are all constructed of carbon, aramid and glassfibers. This paper is focused on the aerodynamic design of the ASW-24 which took place in close cooperation between Alexander Schleicher Segelflugzeugbau and the Delft University of Technology (DUT) Low Speed Laboratory (LSL). At the time of writing this paper, the mouldings of the ASW-24 master model are taken. First flight is expected in summer 1987. It has been shown that this sailplane is a new designof all components. The calculated speed polars indicale that a further improvement of performance in the Standard Class may be expected.