MEASUREMENT OF AERODYNAMIC COEFFICIENTS BY SYSTEM-IDENTIFICATION METHODS

When measurement of unsteady aerodynamic forces at high reduced wind speed is required, it is important to judge whether it is coupled or not, because aditional method of the measurement has to be applied due to its coupling. Applying different numerical models on one series of time history of a response this problem may be easily solved. In this paper feasibility and problems of identification of coupled aerodynamic coefficients by Extended Kalman filter is discussed using wind tunnel test results.