论文信息 - Estimation of the longitudinal aerodynamic parameters from flight data for the NASA F/A-18 HARV

Estimation of the longitudinal aerodynamic parameters from flight data for the NASA F/A-18 HARV

This paper presents the results of an investigation focused on parameter identification for the NASA F/A-18 HARV. This aircraft was used in the high alpha research program at NASA/Dryden. In this study the longitudinal stability derivatives are estimated from flight data using the maximum likelihood method coupled with a Newton-Raphson minimization technique. The objective is to estimate an aerodynamic model describing the aircraft dynamics over a range of angle of attack from 5 to 60 deg. The mathematical model is built using the traditional static and dynamic derivative buildup. Flight data used in this analysis were from a variety of maneuvers, including large amplitude multiple doublets, optimal inputs, frequency sweeps, and pilot pitch stick inputs. The parameter estimation code pEst, developed at NASA/Dryden, was used in this investigation. Results of the estimation process from alpha = 5 to 60 deg are presented and discussed. (Author)

Brad Seanor | Alfonso C. Paris | Albion H. Bowers | Marcello R. Napolitano

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