GLIDER WING LOADING SPECTRUM IN WINCH LAUNCHING, GROUND RUN AT AEROTOWING AND IN LANDING

Abstract

The spectrum of the wing loading in winch-launching and ground run at take off and landing, which when compared with the other operation situations, differs due to the basic load factors being a function of time. This fact does not permit presenting the spectrum, as usually, in the form of cummulative line of load factor versus frequency.  The  spectrum data are understood as a part of the wide flight testing program aimed at producing practical material for designing the fatigue test program. The next step, planned to be completed in the next year, is to record the load spectrum in aerotowing, circling in thermals, interthermal flights and final glides, as well as wave flying. All these operational situations should be measured in the weak, moderate and especially in the strong turbulence.