Parameter estimation for the NASA F/A-18 HARV at high angles of attack

The subject of this paper is the determination of the aerodynamic stability and control derivatives from flight data using the Maximum Likelihood method for the NASA FIA-18 HARV at high angles of attack. The parameter identification (PID) code pEst, developed at NASA Dryden, was provided by NASA and modified for an alternative modeling approach for high angle of attack conditions. Estimates were obtained for longitudinal dynamics parameters.