Xueguang Bia - Stanley Security Solutions, Inc., Shenzhen, Guangdong ۵۱۸۱۰۸, China
Yucheng Liu - Department of Mechanical Engineering, University of Louisiana, Lafayette, LA ۷۰۵۰۴, USA

This paper presented methods to determine the aerodynamic forces that acton an aircraft wing during flight. These methods are initially proposed for asimplified two degree-of-freedoms airfoil model and then are extensivelyapplied for a multi-degree-of-freedom airfoil system. Different airspeedconditions are considered in establishing such methods. The accuracy of thepresented methods is verified by comparing the estimated aerodynamic forceswith the actual values. A good agreement is achieved through the comparisonsand it is verified that the present methods can be used to correctly identify theaerodynamic forces acting on the aircraft wing models.