Numerical Analysis of a Cycloidal Rotor Under Diverse Operating Conditions and Altitudes 2019-01-1872
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.