VARI-SPEED II, funded by the Austrian national aviation research program Take OFF, is the follow up project of VARI-SPEED (FFG.Nr.:850442), a project that proved the possibility of rotor speed variations performed by a transmission system. VARI-SPEED II focusses on the interaction of single components in the drive train. The controllability and handling qualities of a rotorcraft with rotor speed variations and the realizability of the transmission ration variable module, are further research questions. The interactions and behavior of the drivetrain components in different flight conditions are investigated in a simulation model of the dynamic system.
ADTs role in the project is the concept and design of the drivetrain demonstrator. Furthermore ADT is responsible for the testing schedule including the downscaling of all tested components.