Panchal, Jeet. Free play study using peters unsteady aerodynamics with applications to probabilistic modeling. Retrieved from https://doi.org/doi:10.7282/t3-6s6f-mc84
DescriptionIn the last two decades, there has been an increasing interest in the field of nonlinear aeroelasticity. With substantial improvements in computing capabilities, the control surface free play problem is now being reinvestigated by many researchers with the goal of developing more advanced and accurate analytical models. Despite this field of research being well defined, numerous modeling approaches exist, yielding unique numerical predictions of the aeroelastic dynamical behavior and its associated properties. The literature shows many variabilities in the parameters that define free play, with the majority of the existing models being developed deterministically. In this thesis, different nonlinear aeroelastic systems with finite-state unsteady aerodynamics are investigated in the time domain. The results are then used to create a novel probabilistic framework to predict the likelihood of encountering aeroelastic instabilities.