Comparison of the Aerodynamic Blowdown Coefficients With Their Flight Estimates in the Longitudinal Motion of the AIrcraft

The problem of comparing estimates of aerodynamic coefficients calculated from flight data with similar coefficients from the aerodynamic characteristics bank is investigated. A method for calculating optimal estimates of coefficients closest to the purge data is proposed, and its properties are established. The method has been tested on short-range aircraft flight data in longitudinal motion. A good mutual correspondence of flight and purge coefficients is shown.