Numerical Analysis of a Cycloidal Rotor Under Diverse Operating Conditions and Altitudes
To be published on September 16, 2019 by SAE International in United States
Event: AeroTech Europe
The current paper deals with the numerical study of the downwash flowfield characteristics in a cycloidal rotor. In an aircraft equipped with this kind of thruster, the downwash flow plays significant role in different flight modes. The interaction of this downwash jet with ground in effective height levels is studied using CFD simulations. Several operating conditions like pitching oscillation angles, rotation speeds and height levels are all considered in this work. The results declare that close-ground operating states augments the efficiency of cyclorotor. The vertical and horizontal forces of a single blade is also analyzed in a complete cycloid in different operating conditions. A lead and lag in maximum and minimum extremes of force curves of a single blade cycloid is obtained while being subjected to different functional conditions. These results strongly assure that an active control of both pitching oscillation and rotation speed is essential in operating at the optimum desired state.