Three Dimensional Flight Control Design for an Aero-Elastic Flapping Vehicle

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Babaoghli, Fatemeh | 2018

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 50939 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Pourtakdoust, Hossein
Abstract:
This thesis is focused on development, modeling and simulation of a complete 6DOF elastic flapping air vehicle (FAV). In this respect the aerodynamic modeling is performed using a recent experimentally validated generalized modified strip theory (GMST) that considers the unsteady effect of wake and leading edge vortices via the Theodorsen function and Polhamus analogy respectively. The FAV wing structure is modeled using an elastic plate whose dynamic behavior is determined via a modal approach that is also verified with experimentation. The resulting novel integrated aerodynamic and structure (IAS) equations of motion are simulated for case study of FAV flight. Subsequently, since the IAS equations turn out in a nonstandard complex nonlinear form, an innovative neural network is designed to produce their equivalent instantaneous linear state space models for utility of modern control methodologies
Keywords:
Unsteady Aerodynamic ; Modal Analysis ; Linearization ; Complex System ; Flight Control ; Bird Type Flapping Vehicle ; Six Degree of Freedom Modeling ; Modern Control

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