Maximum Likelihood Identification of the Longitudinal Aerodynamic Coefficients of The EA-6B Airplane in the Catapult Launch Configuration.

摘要

The aerodynamic coefficients describing the longitudinal equations of motion of the EA-6B airplane with landing gear and flaps down were determined from flight test data through use of a maximum likelihood identification algorithm. These identified coefficients were accurately determined and were utilized to both (1) predict short and long period time history responses and (2) duplicate the results of conventional flight test specification requirement test procedures. The identified results provide an example of the type of information available through the application of parameter estimation technology in the areas of airplane data base generation. These data can be utilized for ACLS and Operational Flight Trainer simulations as well as for parametric studies of aerodynamic characteristics. (Author)