Flight simulation from takeoff to yawing of eVTOL airplane with coaxial propellers by fluid-rigid body interaction

Abstract In this study, we adopt a coupled fluid-rigid body simulation using the moving computational domain method and multi-axis sliding mesh for takeoff, hovering, yawing flight of an electric vertical takeoff landing aircraft (eVTOL). The model has four pairs coaxial propellers, is divided into three domains to move eight propeller rotate propellers. As result, clarify behavior aerodynamic force when input values are determined by automatic control. results in flow field also show that downwash spreads crisscross pattern on ground, wind reaches different ranges ground depending altitude, causes asymmetry velocity during yawing. Consequently, conclude effective eVTOL.