The results of estimations of aerodynamic characteristics of the research aircraft Advanced Technologies Testing Aircraft System (ATTAS) from flight test data are reported. The emphasis was on validating and updating the aerodynamic data base predicted by wind tunnel and analytical methods. The estimation of aerodynamic derivatives, carried out by applying a nonlinear maximum likelihood parameter estimation method, is based on the six degree of freedom equations of aircraft motion and a one point aerodynamic model in terms of nondimensional derivatives. From the flight estimated aerodynamic derivatives, an aerodynamic data base is computed in a table look up form suitable for integration in the ground based simulator. The aerodynamic characteristics estimated from flight data are compared with those predicted by wind tunnel and analytical methods.
Determination of Aerodynamic Characteristics from ATTAS Flight Data Gathering for Ground-Based Simulator
1991
58 pages
Report
No indication
English
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