Effects of Cyclic Pitch on Time Delayed Dynamics in Coaxial Rotor Systems

View Video Presentation: https://doi.org/10.2514/6.2021-1990.vid Finite-state inflow methods are used to study the effect of the time-delay and adjoint dynamics of a coaxial rotor system in the presence of cyclic pitch. Finite-state inflow methods for coaxial rotors involve the use of co-states and time-delayed variables that are subject to change based on rotor spacing. Moreover, aggregate and individual blade dynamics are driven by these effects –– as well as by the cyclic pitch used in distributing loads across the rotor disk. The work presented here focuses on how variations in cyclic pitch impact the on-disk velocity and blade flapping dynamics in a coaxial rotor system at different rotor spacings.