Experimental-based unified unsteady nonlinear aerodynamic modeling for two-dimensional airfoils

Mohamed Y. Zakaria, Haithem E. Taha, Muhammad R. Hajj, Ahmed A. Hussein

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Scopus citations

Abstract

Unsteady force measurements of a plunging airfoil at different frequencies and mean angles of attack are used to construct frequency response models. The obtained frequency response models are then used to determine the linearized flow dynamics around each mean angle of attack, where an optimization-based linear system identification is performed to minimize the error between the predicted and measured frequency responses. Converting these models to state space form and writing the entries of the matrices as polynomials in the mean angle of attack, a global, unified unsteady model is developed. The developed reduced order model, represented in a state space form, is suitable for characterizing the nonlinear dynamical characteristics of the flow and the associated dynamics and control of a flying object.

Original languageEnglish
Title of host publication33rd AIAA Applied Aerodynamics Conference
DOIs
StatePublished - 2015
Event33rd AIAA Applied Aerodynamics Conference, 2015 - Dallas, United States
Duration: 22 Jun 201526 Jun 2015

Publication series

Name33rd AIAA Applied Aerodynamics Conference
Volume0

Conference

Conference33rd AIAA Applied Aerodynamics Conference, 2015
Country/TerritoryUnited States
CityDallas
Period22/06/1526/06/15

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