Abstract
The estimation-before-modeling (EBM) system identification method has been applied to actual highalpha/beta flight data of the T-2C jet trainer aircraft. Eighteen maneuvers (600 s at 20 Hz) were processed by the two steps of the EBM technique. The estimated biases and scale factors of the measurements are presented. Comparisons between the wind-tunnel and the identified state and control derivatives are given. Comparisons between the predicted and the identified dynamic derivatives are presented. There is good agreement between the identified nonlinear model and the wind-tunnel model. Many (although not all) identified dynamic derivatives are in agreement with the prediction models except near stall or at high alpha.
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