Structural and dynamic analysis of the prototype main rotor blade section Available to Purchase

This paper presents the strength analysis of a blade zone model of a main rotor dedicated to the integration of an SMA actuator, which is loaded with equivalent forces from the assumed operating conditions. The blade is dedicated to an unmanned rotorcraft with maximum take-off mass 150 kg. The analysed object is a section of an active blade equipped with a system modifying the geometrical features, i.e. the geometrical twist. Therefore, analyses are required to confirm the safety and load capacity reserves of the structure loaded with inertial, aerodynamic as well as reaction forces coming from the actuation systems. This paper presents the results of strength analyses of the structure, identification and evaluation of the results depending on the applied analysis method.