Piecewise Polynomial Model of the Aerodynamic Coefficients of the Generic Transport Model and its Equations of Motion

The purpose of this document is to illustrate the piecewise polynomial model which has been derived from wind-tunnel measurement data of the Generic Transport Model (GTM) using the pwpfit toolbox. For implementation details and use in MATLAB, please refer to the source code at https://github.com/pwpfit/GTMpw. Comment on Version 2: An appendix has been added to detail a polynomial spline model of the aircraft longitudinal motion. Comment on Version 3: The polynomials for low and high angles of attack and with respect to side-slip and surface deflections have been corrected.